Euthanasia vs Palliative Sedation Essay Example for Free

Euthanasia vs Palliative Sedation Essay In this paper the author will discuss the difference between euthanasia, physician assisted suicide, and palliative sedation. The author will discuss the legal and ethical side of palliative sedation. Palliative sedation is where they use education to induce or decrease awareness of ones intractable suffering at the end of life (Olsen, Swetz, Mueller, 2010, p. 949). They use this type of sedation when other most common forms of pain control does not relieve the pain the patient is feeling. Not only is it used to treat pain but it is also used to treat delirium, pain, dyspnea, nausea or other physical symptoms (Olsen et al. , 2010, p. 950). In the aftermath of Hurricane Katrina reviewers concluded that physicians choice of benzodiazepines instead of barbiturates indicated a goal of palliative rather than euthanasia, stating that barbiturates were more deadly. Some institutions used ketamine or propoful in patients condition is refractory to opioids and midazolam. Opiates should not be used for primary purpose of sedation, but rather should be continued adjunctively during palliative sedation for analgesic purpose to prevent opiate withdrawal (Olsen et al. , 2010, p. 950). Usually palliative sedation is given in a form of continuous drip but there has been times when palliative sedation has been given intermittently. Palliative sedation should be given in the areas of general care or hospice settings, ICU settings can be too hectic and uncomfortable for families. Cardiac monitoring is no good in achieving the goals of palliative sedation (Olsen et al. , 2010, p. 951). Before palliative care is given written consent should be obtained by the patient or the patients family. In the state f Arizona the Arizona State Board of Nursing has develop an advisory opinion of the scope of practice of what palliative sedation is. it states that it is in the scope of practice for the register nurse to administer medications that provide palliative sedation at the end of life (Brewer Ridenour, 2010, p. 1). Arizona State board of Nursing defined palliative sedation as follows: The monitored use of medications intended to provide relief of refractory symptoms but not to intentionally hasten death (Brewer Ridenour, 2010, p. 1). What is a refractory symptom? It is one that cannot be adequately controlled in a tolerable time frame despite aggressive use of usual therapies and seems unlikely to be adequately controlled by further invasive or noninvasive therapies without excessive or intolerable acute or chronic side effects or complications (Brewer Ridenour, 2010, p. ). In Arizonas advisory opinion they rote general requirements that must be followed and they are listed below: * Written Policy and Procedure is maintained by the employer. * Administration of medications must be on the order of a person licensed in this state to prescribe such medications. * The patent has to have sufficient level of nursing care to maintained sedation. * The agency has identified medications allowed for palliative sedation, preferably y an interdisciplinary committee including nurses. * Pre-sedation symptom assessment is performed by the RN Post-sedation symptom assessment and ongoing assessments performed by the RN (Brewer Ridenour, 2010, p. 1) * Only an RN with all of the following criteria are permitted to administer medications for palliative sedation. * Current certification in basic Life Support ( BLS). * The RN must possess sufficient knowledge about the issues surrounding the use of palliative sedation to inform patients, families, and other health care providers in making decisions about its use. (Brewer Ridenour, 2010, p. 1). Palliative sedation is also referred to as terminal sedation. The role of the oncology nurse is to be able to administer the medications used n palliative sedation, be able to teach the patient and family what palliative sedation is and its purpose(Lawson, 2011). She has to be able to assess the patients signs and symptoms to know if the palliative sedation is working . One must understand the role of palliative sedation and its role in management of the patients symptoms in providing care of patients with advanced cancer at the end of life(Lawson, 2011). Euthanasia is defined as the act of a third party, usually physician, ending a patients life in response to severe pain or suffering. Euthanasia can be voluntary meaning that the physician has obtained the patients informed consent, on it can be involuntary meaning without the knowledge of consent of the patient (Olsen et al. , 2010, p. 953). Voluntary euthanasia is not legal in most parts of the world but the Netherlands and Belgium are currently the only countries who allow the practice (Olsen et al. , 2010, p. 954). Involuntary euthanasia is not legal anywhere. Physician-assisted suicide is the act of the physician writing a prescription for a lethal dose of medication that the patient takes himself to cause death. The main difference here is that the patient has to take the medication himself no other person can give it to him (Olsen et al. , 2010, p. 955). Physician assisted suicide is legal in the states of Oregon and Washington and in a handful of other countries (Olsen et al. , 2010). It can only be done when a patient has a terminal diagnosis and is suffering and wants to control when and how they die. If a physician or family member or a friend would give this legal dose of medicine it would not be considered physician assisted suicide but euthanasia. In considering the legal ramifications of palliative sedation we will discuss beneficence, non malfeasance, doctrine of double effect, and the principle of proportionality. Beneficence refers to the practice of treating individuals in an ethical manor. Not only by respecting their decisions and protecting them from harm, but also by making efforts to secure their wellbeing(Olsen et al. , 2010). The moral obligation of beneficence is paramount to ethics since actions are weighed for their possible good against the cost of possible Harm. Beneficence provides benefits to the patient and balances the benefits against risk and cost(Olsen et al. , 2010). Any treatment embarked upon should be with the intent to benefit and burden or discomfort o the treatment (Lawson, 2011). If the treatment will not benefit the patient it would be sound clinical judgment to withhold the treatment or even withdrawal the treatment after the discussion with the patient, family members and other members of the care team. Such decision-making would be considered both legal and ethically acceptable (Berghs, Dierckx, Gastmans, 2013).

The History Of Asian Indian Immigrants History Essay

The History Of Asian Indian Immigrants History Essay As immigration historians have established, the history of Asian Indian immigrants consisted of three major significant waves. The first wave began at about the middle of the nineteenth century when the first Asian Indians arrived in America. In fact, by the end of the nineteenth century, about 7300 Indian immigrants mostly settled in California and the Pacific Northwest of the United States (Leonard, 1992, p. 232). According to Bhatia and Takaki, the first wave immigrants were mostly farmers and laborers. Most of these immigrants were Sikhs from the Punjab region in India. However, after immigrating to the U.S., initially, many of these immigrants were employed as railroad workers on the Western Pacific Railroad and helped to construct the Three-Mile Spring Garden Tunnel. Sometimes they also replaced Italian railroad workers who were on strike in Tacoma, Washington (Bhatia, 2007, p. 82; Takaki, 1989, p. 302). Later these immigrants moved to California to work with the Southern Pacif ic Railroad where they found employment in agriculture. After a while these immigrants settled throughout the Sacramento Valley in northern California and found work on the fruit and rice farms of Marysville, Tudor, Willows, and Chico. These Punjabi immigrants also spread to the San Joaquin Valley, and joined the work in grape and celery fields. Further, Asian Indians moved to the Imperial Valley, where they used to gather cantaloupes and picked cotton (Takaki, 1989, p. 302-303). These Punjabi farm laborers organized themselves into teams of workers ranging from three to fifty people. Each group had a leader who was more highly educated and could communicate in English and keep the group working efficiently. They used to grow crops that were familiar to them in India. Skilled in cultivating and harvesting, most of these Punjabis were exceptional farmers, hard workers who were willing to work in any circumstance (Takaki, 1989, p. 306). Despite working from ten to fourteen hours per day Indian immigrants were paid from twenty-five to fifty cents less per day than Japanese laborers (Takaki, 1989, p. 303). As the main objective of the first wave immigrants was to explore economic opportunity, the main identifying characteristic of these immigrants was their need to survive and have financial stability. Opportunities in the United States provided an economic solution to their problems. For example, salaries in India ranged from 5 to 8 cents per day, and in the United States from 75 cents to 2 dollars per day (Wherry, 1907, p. 918-919). Therefore emigration to the United States offered relief from poverty and hope for financial stability. In the first wave, most of the immigrants were male. These immigrants were not allowed to bring their family with them. Most of them were habituated to live alone and lost most of the contacts with their family and home country. One immigrant named Saint Nihal Singh in his essay, which was published in the magazine Out West, argued that One of the chief points of difference between the immigrant from India and those hailing from Europe lies in the fact that the European brings along with him his family (La Brack, 1982, p. 60). The immigrants economic status, lack of rapid inter-continental communication or travel, as well as restrictive immigration and citizenship laws made it difficult for them to visit India. At the same time, due to another by-product of immigration laws, they were not allowed to bring their family which explains the shortage of Indian immigrant women. Along with the lack of Indian women, their exclusion from social interaction with American dominated society, which was reinforced by anti-miscegenation laws, led this immigrant cohort to marry Mexican American women (Leonard, 1992, p. 131-132; Takaki, 1989, p. 309-310). This fact becomes clear when comparing the percentage of Mexican wives among Indian immigrants in California between 1913 and 1947. In northern California, where there is a relatively small population of Indian immigrants, only 47 percent of wives are Mexican, but in southern California, where the immigrant population is much higher, almost 92 percent of wives came from M exico. As a result, another identifying characteristic of the first wave Indian immigrants was their willingness to mix with other races in the absence of Indian women, further cutting ties with their Indian culture and heritage. This mixing led to a blend of the cultural traditions of Asian Indians and Mexicans and sometimes to a dominant Spanish culture in their home life. For example, their progeny spoke Spanish not Punjabi, celebrated Christian rather than Sikh holidays, they replaced some Indian foods with similar Mexican foods such as tortillas for rotis and Jalapeno peppers for Punjabi chili peppers. Also the Catholic religion was adopted and the first names of children were most often Spanish (Takaki, 1989, p. 311). Over time, the traces of Indian heritage became thinner and thinner which also brought cultural differences and conflicts and led to more divorces among these couples (Takaki, 1989, p. 310). In the 1890s America attracted more Indian immigrants; however, as these immigrants were getting more in number than required, they became labor competitors with white workers and were often victimized by white working-class antagonism and violence. In response to exclusionist pressures, immigration officials targets Asian Indians seeking admission to the United States and denied many Indians between 1908 and 1920, on the grounds that they would likely become public charges (Takaki, 1989, p. 297).The growth of the Punjabi community was cut short by the 1917 Immigration Act, which prohibited further immigrants from India (Leonard, 1992, p. 32; Bankston, 2006, p. 68). However, a few decades later Indian immigrants of this first wave had become a part of the society and some were actively involved in social affairs and gained higher positions. For example, Dalip Saund in 1957 became the first Asian Indian senator from California when he was elected to Congress after it had passed a bill allowing naturalization for Indians in July 1946. Like many early Indian immigrants, Saund had come to the United States from Punjab and had worked initially in the fields and farms of California. Then, he had earned a doctorate at the University of California, Berkeley (Dasgupta, 2006, p. 139). 2.1.2. Second Wave of Indian American Immigrants In 1965, President Lyndon Johnson signed a bill that has dramatically changed the method by which immigrants are admitted to America (Kutler, 2003, p. 230; Bankston, 2006, p. 320). The significance of this bill was that future immigrants were to be welcomed because of their professional skills, but not based on their country of origin. After the passing of this bill, significantly larger numbers of Asian Indian immigrants started migrating to the U.S. leading to the second wave. Between 1965 and 1974, Indian immigrants to the U.S. increased at a rate greater than those from any other country (U.S. Census Bureau, 2000). This was mainly because of their fluency in English, high professional skills and level of education. Bhatia has stated that the second wave of immigrants was very different from the first wave of Indian immigrants in terms of their economic, educational and social status (Bhatia, 2007, p. 14). Takaki also claims that the first and second waves of Indian immigrants were worlds apart. In a published interview by Barkan, Dr. S. Patel who was a second wave immigrant, agreed with Takaki, describing the difference of the first and second waves: It is a class thing. They came from the farming, the lower class. We came from the educated middle class. We spoke English. We went to college. We were already assimilated in India, before we came here (Barkan, 1983, p. 48). The immigrants who emigrated after 1965 were overwhelmingly urban, professional, highly educated and quickly engaged in gainful employment in many U.S. cities. Many had prior exposure to Western society and education which led to a relatively smooth transition to the United States. In between 1966 and 1977, 83 percent of Indians who entered the U.S. under the occupational category of professional and technical workers; the entrants of this time included many scientists, doctors, and engineers (Prashad, 2000, p. 75). In addition, Bhatia states that most of this group of Asian Indians was trained as medical doctors, engineers, scientists, university professors, and doctoral and postdoctoral students in mostly science-related disciplines like chemistry, biochemistry, mathematics, physics and biology (Bhatia, 2007, p. 14). However, both waves of immigrants from India shared a desire for a better life in America with greater opportunities for economic growth and independence (Takaki, 1989, p. 445). The second wave of immigrants enjoyed greater success with the greater economic opportunities in America because of their education. They could possibly make their life in India, but they also saw more opportunity in America. Unlike the first wave of immigrants, the second wave of immigrants defined themselves differently in relation to the U.S. and their home country. They were more educated, professional, and socially stable as they were allowed to bring their families. Though the search for economic opportunities brought both waves to the United States, the second wave of immigrants was able to earn more money and have improved standard of living than first wave immigrants. Also they maintained their ties with their culture and heritage through their families. Unlike the first wave immigrants, who were mainly male, the second wave immigrants were both male and female. Some Indian immigrant women used to work out of their home, contrary to traditional Indian American norms as well as to those in the first wave of Asian Indian immigrants. As a result, they participated in the mainstream of America and adapted to US culture faster and became more bicultural than those Indian immigrant women who adopted more traditional roles (Nandan, 2007, p. 395). Contrary to the first wave of immigrants from India, the second wave had the means to frequently visit their homeland to visit friends, attend important events and care for their parents. The second wave of immigrants had the means to own property such as houses which was not so easy for the first wave immigrants due to their low earnings and restrictions. Due to this reason some Indian immigrants in this wave moved to the suburbs which made them isolated from the many Indian families living in the city. Therefore, they often felt loneliness and did not felt comfortable in developing close bonds with the neighborhood too. This made them to maintain some of the Indian food and religious customs within their homes (Nandan, 2007, p. 396). 2.1.3. Third Wave of Indian American Immigrants The third wave of immigrants was marked by important shifts in the legal and sociopolitical environment, resulting in new patterns and dynamics in Indian American immigration. Due to Family Reunification Act which was passed in 1990, a large proportion of Indian Americans entered in to the US. This led to a third wave (from 1990 to the present time) of new arrivals of Indian American immigrants, which included both highly skilled professionals and a working and lower middle class population (Landale, 1997, p. 283). As a part of the Reunification Act, some of the third wave of Indian immigrants came specifically to join their family. Most of them are either siblings (sometimes they are very poor or uneducated) or aged parents (who are old and/or retired) of the highly skilled professionals unlike the second wave (Ross-Sheriff, 2004, p. 150). Therefore, economic stability or opportunity meant very little to this group in comparison with the previous waves of immigrants and also the highly skilled professionals. However this group of people tried to find work or started small businesses or worked in small businesses such as motels, gift shops, grocery/convenience stores or gas stations. In addition, many of these newcomers could not become financially independent, but rather stayed closely tied to their children or siblings (Bankston, 2006, p. 69; Ross-Sheriff, 2004, p. 150). According to Prashads statistics, 9,910 Indians, 1,694 Pakistanis, and 711 Bangladeshis came to the U.S. as highly skilled laborers in 1996. In comparison to the figures for those who came under the family reunification scheme are far higher, that is 34,291 Indians, 9,122 Pakistanis, and 8,221 Bangladeshis (Prashad, 2000, p. 79). With this shift in mode of entry, the education and socioeconomic profile of Indian Americans has become more diverse, complex and heterogeneous than the previous wave of immigrants. The second wave of immigrants who were already settled, invited their family members when the reunification act passed, allowing them to hold on more tightly to their culture. As a result, the third wave failed to assimilate into their new culture, choosing to live according to their own customs. Because of the arrival of the extended families, their culture and heritage could be maintained through the large number of Asian Indians living together in one area. As a result, small Indian communities were established allowing the third wave of immigrants to avoid the American culture. They could wear their own clothes; they could eat their food; they could speak their own language, and they could practice their own religion (Khandelwal, 2002, p. 164). Following the 2001 terrorist attacks against the U.S. on 9/11, the legal and political context of South Asian immigration once again shifted in some important ways. Thus, South Asian immigrants, especially men from the majority Muslim countries of Bangladesh and Pakistan, have been subject to a variety of surveillance measures instituted by the United States. It is not yet clear how these new measures will affect immigration from South Asia. As a result, there are some signs of decline in the rates of South Asian immigration, especially from Bangladesh and Pakistan. Reports in 2003 suggested those from Bangladesh and Pakistan are moving to more receptive countries like Canada (Sachs, 2003, p. A1). 2.2. Development of Asian Indian Immigrants This section describes briefly the facts and figures about Indian Americans in terms of population numbers, growth rate, education, language, etc. The growth of the population of Indian Americans has changed dramatically over the past few decades. According to the records the first wave consisted of 2000 immigrants. Between 1948 and 1965, 6,474 Asian Indians entered the United States as immigrants (Bankston, 2006, p. 68). During the 1980s the number of immigrants increased exponentially. According to the 1990 US Census about 570,000 Indians immigrated to America. Table 1 shows that the growth rate of Indian American immigrants from 1980 to 1990 increased significantly by about 35%. This growth rate continued from the 1980s to the 1990s. The growth rate from 1990-2000 is 14.42%. Even though the growth rate is lower compared to the previous growth rate, the population of Indian Americans in 2000 crossed the number of 1.5 million. The US Census 2000 shows that among all Asian ethnic groups the Indian Americans are the third largest ethnic group consisting of about 1,678,765 people (Table 2). Over 50 percent of foreign-born Asian Indians entered the U.S. between 1990 and 2000, compared with a rate of about 18% who entered before 1980. In 2007 over 2 million Indian Americans are listed in the data (U.S. Census Bureau). This is due to the land of opportunities with a good amount of perks and salary. In addition, globalization and multiculturalism is also playing a major role to attract immigrants. Most of the Indian Americans settled in populated states such as New York, California, New Jersey, Maryland, Texas and Illinois as well as large cities such as Los Angeles, San Francisco, and Chicago. This is largely due to the availability of jobs in larger cities as well as the personal preference of being a part of an urban and ethnically diverse environment. Yet, there are sizeable Asian Indian communities in suburban areas also such as Silver Springs in Maryland, San Jose and Fremont in California, Queens in New York and etc. (Bankston, 2006, p. 69-72). Education and career success are more highly valued among Indian immigrants as compared to other Asian groups. The 1990 US census report shows that 52 % of adult Asian Indians were college graduates which is considerably higher than the 35% rate among all adult Asian Americans. Their academic achievements were bolstered by their fluency in English. In addition, in 1990 over 80 percent of Indian male immigrants held a college degree and five percent of all Indian American doctors received their primary education in India. Due to the high educational status of Indian Americans, 65 percent of them worked as managers, or in the professional/technical industry (Helweg, 1990, p. 61). Many graduates from elite engineering institutions like IIT (Indian Institute of Technology) came to America for higher education at various educational institutions. Most of such graduates after finishing their higher studies from US universities used their new degrees to obtain positions with lucrative salaries, which in turn led them to work and settle in the United States. Very few of them returned to India immediately after finishing their higher education. In 2000, about 87% of Asian Indians had at least a High School Diploma and 70% had a Bachelors Degree or higher, and they were proficient in English. Of the general population, 33.6% were in management, professional, and related positions. Among the Asian Indian population, 59.9 % were in those types of position, which was more than any other Asian group. This was mainly because Indian Americans in fact were well-educated, hard-working, and proficient in the English language. Indian Americans had the highest labor force participation rate of about 79% as compared to all Asian Americans, who participated in the labor force at a rate of about 71%. Besides this, male Indian immigrants had median yearly earnings of $51,904, which was also more than any other Asian American group. As a result Asian Indians had a lower poverty rate than that of the total population (9.8% versus 12.4%). Moreover, statistics showed that Indians had a larger percentage (71.4) of the populace between the ages of 16 and 64 than any other Asian group, except immigrants from Thailand (82.2%) (U.S. Census Bureau, 2000). Accordingly, Indian Americans remain one of the most socio-economically successful groups of all immigrants or ethnicities in the U.S. and are often presented as a model from which other ethnic/immigrant groups could learn. As Wadhwa reports on Bloomberg Businessweek in 2006: Not only are they leaving their mark in the field of technology, but also in real estate, journalism, literature, and entertainment. They run some of the most successful small businesses and lead a few of the largest corporations. Valuable lessons can be learned from their various successes (Wadhwa, 2006, Bloomberg Business Week). This article also cites twelve main factors that account for the success of Indian Americans such as education, upbringing, hard work, entrepreneurial spirit, social networks, integration into the U.S. society, etc. These statistics show and prove that Indian immigrants tend to have high levels of education and English proficiency, which gives them an advantage over other Asian communities. However, along with the advantages, there are also issues such as assimilation, religious beliefs, traditions and race which are also challenging. 2.3 Generational Change After many years these immigrants over time settled and became permanent citizens, who are treated as first-generation of Asian Indian Americans. This led to multiple generations of Indian Americans. The children of the first-generation, unlike their parents, grew up with an Indian culture and an American culture. Due to this different background, historians distinguish between first, second, and third-generations of Asian Indian Americans who differ in terms of their values, customs and traditions. First-generation Indian Americans from the Indian subcontinent are more familiar with the culture of India as well as the culture of America. They tend to be more traditional than later generations. Attempting to preserve their religious and cultural heritage, these first-generation Indian Americans built temples and formed local organizations representative of the subcultures (Sindi, Gujarati, Tamil, and Bengali) from which they came. Parents exposed their children to those subcultures through functions hosted by these organizations and within their home (Bankston, 2006, p. 73). In the case of second-generation of the Indian Americans, most of their traditional and cultural values were slowly changed. They grow up in American culture and learn more about American culture and at the same time they used to face Indian traditions in their homes. Following this dual culture lead to understand and search their identity in the society. As cultural historians have suggested, they find themselves at a place in-between the Indian and the American cultures due to the adoption of American culture as well as compromise of some Indian traditions. Third-generation Asian Indian Americans, who strongly adhere to the U.S. cultural values, but do not endorse any traditional Asian Indian values, could be said to be highly acculturated but not enculturated (Tewari, 2009, p. 105). They are naturalized citizens of America and they do not fit India. However, physically they are always tied to India because of their appearance. Those immigrants who succeed in business can shed the label of immigrant, while those who are poor continue to be viewed as immigrants, even though their family has been in the U.S. for three generations.

Synesthesia and the Nature of Perception Essay example -- Biology Essa

Synesthesia and the Nature of Perception Although scientists do not fully understand the workings of the brain and perception, the basic concept seems fairly simple on an intuitive level. The brain interprets one set of stimuli in a specific way. Certain people with synesthesia, however, can experience a single stimulus in different ways. Are they naturally predisposed to hear red? Do these people have extra neural connections allowing them to taste green? Some scientists claim that all humans begin their lives as synaesthetes until they learn to differentiate their senses. It brings into question the nature of perception, and how the brain perceives reality. Synaesthetes experience "cross-modal" associations involuntarily, so that the feeling of one sense stimulates the sensations of another (1). Five features for clinical synesthesia exist (1): People with the rare condition of synesthesia experience it passively, but it requires a certain stimulus to elicit a response. The individual projects the sensations into his peri-personal space. The sensations do not change over time, and are generic, unelaborated sensory perceptions. In addition, the experiences are very memorable; one subject said that "he was merely a passive observer as the reminiscence unfolded itself" (1). Experiments with a single synesthetic subject show perfect consistency for colour descriptions of words, compared to a 17% consistency rate of a control subject with similar intelligence and memory levels (3). Not only did the subject seem genuine, based on her high level of consistency, but she gave far more detailed and vivid descriptions of the associated colours than the control subject. In a larger group of nine subjects, the consistency rate fo... ...until the brain learns to separate sensations. The source of the connections, the limbic brain, still serves as an emotional guide to the rational objective world, giving reality different perspective for each individual. Internet Sources 1)http://psyche.cs.monash.edu.au/v2/psyche-2-10-cytowic.html, in Psyche 2)http://www.psychiatry.cam.ac.uk/isa/whatis.html, Overview on the ISA homepage 3)http://www.psychiatry.cam.ac.uk/isa/expinv.html, Experiments on the ISA website 4) http://www.ozemail.com.au/~ddiamond/synth.html,paper on Synesthesia 5)http://psyche.cs.monash.edu.au/v2/psyche-2-27-baron_cohen.html, in Psyche 6)http://www.cnn.com/HEALTH/9511/synesthesia/, article on CNN 7)http://www.ad-i.com/viral/what/synes2.html, paper by Kamel 8)http://www.healthlink.usa/synesthesia.html,health information about synesthesia from Healthlink

The Actions of Cocaine in the Brain Essay -- Drugs Addiction Addicted

The Actions of Cocaine in the Brain Cocaine’s mode of action has been shown to involve the dopamine receptors. This paper will discuss how cocaine affects dopamine receptors, the mode of addiction, how cocaine affects the frontal brain metabolic activities, as well as the role of excitatory amino acids in cocaine’s mechanism. I will also discuss how cocaine affects another system through its mechanism on the brain—the renin angiotensin system. Cocaine influences dopamine, norepinephrine and serotonin neurotransmission by inhibiting their reuptake. Pimozide, alpha-flupenthixol, perphenazine and chlorpromazine, all dopamine antagonists, were used to pre-treat rats in an attempt to demonstrate the reinforcing effects of dopamine. Because rats demonstrated a reduced rate of self-administration during extinction as well as after pre-treatment with antagonists, it is conceivable that dopamine receptors are involved in the reinforcing effects of cocaine (Hubner & Moreton, 1991). Two dopamine receptors, B1 and B2, are believed to be involved in these rewarding effects of cocaine. Rats were trained to self-administer cocaine intravenously on a fixed-ratio (FR) 5 schedule of reinforcement. When these rats were pretreated with SCH23390, a D1 antagonist, and spiperone, a D2 antagonist, their response rates varied. At doses up to l0ug/kg, the rats exhibited an increased response rate; whereas at doses higher than this, the rats showed a decrease in their response rate. A similar decrease in response rate was produced when central dopamine containing neurons were destroyed with the neurotoxin, 6-hydroxy-dopamine (Hubner &Moreton, 1991). The mode of action of the D1 receptor subtype is on adenylate cyclase. Upon activation, it s... ... 1. Dackis, C. A., and Gold, M. S. Neurotransmitter and neuroendocrine abnormalities associated with cocaine use. Psychiatric Medicine, 1987, 3: 469-477. 2. Hubner, C. and Moreton, J. Effects of selective D1 and D2 dopamine antagonists on cocaine self-administration in the rat. Psychopharmacology, 1991, 105: 151-156. 3. Karler, R. et. al. Excitatory amino acids and the actions of cocaine. Brain Research, 1992, 143-146. 4. Nestler E. Molecular Mechanisms of Drug Addiction. The Journal of Neuroscience, July 1992, 12(7): 2439-2450. 5. Rodriguez-Sanchez, M. et. al. Effect of Prenatal and Postnatal Cocaine Exposure on Somatostatin Content and Binding in Frontoparietal Cortex and Hippocampus of Developing Rat Pups. Peptides, 1991, l2: 951-956. 6.Volkow, N. et al. Long-Term Frontal Brain Metabolic Changes in Cocaine Abusers. Synapse,1997, 11:184-190 The Actions of Cocaine in the Brain Essay -- Drugs Addiction Addicted The Actions of Cocaine in the Brain Cocaine’s mode of action has been shown to involve the dopamine receptors. This paper will discuss how cocaine affects dopamine receptors, the mode of addiction, how cocaine affects the frontal brain metabolic activities, as well as the role of excitatory amino acids in cocaine’s mechanism. I will also discuss how cocaine affects another system through its mechanism on the brain—the renin angiotensin system. Cocaine influences dopamine, norepinephrine and serotonin neurotransmission by inhibiting their reuptake. Pimozide, alpha-flupenthixol, perphenazine and chlorpromazine, all dopamine antagonists, were used to pre-treat rats in an attempt to demonstrate the reinforcing effects of dopamine. Because rats demonstrated a reduced rate of self-administration during extinction as well as after pre-treatment with antagonists, it is conceivable that dopamine receptors are involved in the reinforcing effects of cocaine (Hubner & Moreton, 1991). Two dopamine receptors, B1 and B2, are believed to be involved in these rewarding effects of cocaine. Rats were trained to self-administer cocaine intravenously on a fixed-ratio (FR) 5 schedule of reinforcement. When these rats were pretreated with SCH23390, a D1 antagonist, and spiperone, a D2 antagonist, their response rates varied. At doses up to l0ug/kg, the rats exhibited an increased response rate; whereas at doses higher than this, the rats showed a decrease in their response rate. A similar decrease in response rate was produced when central dopamine containing neurons were destroyed with the neurotoxin, 6-hydroxy-dopamine (Hubner &Moreton, 1991). The mode of action of the D1 receptor subtype is on adenylate cyclase. Upon activation, it s... ... 1. Dackis, C. A., and Gold, M. S. Neurotransmitter and neuroendocrine abnormalities associated with cocaine use. Psychiatric Medicine, 1987, 3: 469-477. 2. Hubner, C. and Moreton, J. Effects of selective D1 and D2 dopamine antagonists on cocaine self-administration in the rat. Psychopharmacology, 1991, 105: 151-156. 3. Karler, R. et. al. Excitatory amino acids and the actions of cocaine. Brain Research, 1992, 143-146. 4. Nestler E. Molecular Mechanisms of Drug Addiction. The Journal of Neuroscience, July 1992, 12(7): 2439-2450. 5. Rodriguez-Sanchez, M. et. al. Effect of Prenatal and Postnatal Cocaine Exposure on Somatostatin Content and Binding in Frontoparietal Cortex and Hippocampus of Developing Rat Pups. Peptides, 1991, l2: 951-956. 6.Volkow, N. et al. Long-Term Frontal Brain Metabolic Changes in Cocaine Abusers. Synapse,1997, 11:184-190

Steroids :: essays research papers

  Ã‚  Ã‚  Ã‚  Ã‚  Steroids were first developed in the 1930's. The Germans first experimented on dogs and then on their own soldiers in the World War II, as well as used them on their prisoners to help them stay healthy because they suffered from significant malnutrition. Then in the 1950's many Russian and European athletes began to find that steroids were very beneficial to their goals and soon after began dominating the sport of power lifting, crushing previous world records. In the mid 1950's it was proven that testosterone was the reason behind the improved athletic ability by Dr. Ziegler. Soon after he and his labs were producing Dianabol or Methandrostenolone. A few years later, steroids were available on the market. At that time both athletes and doctors were using them alike on a regular basis. On March 1st 1991, the Federal Anabolic Control Act was in effect. This put anabolic steroids on the schedule III of the Controlled Substance Act, making them an illegal substance without a prescription. Today, there are clinics that will prescribe testosterone and HGH to qualified patients. HGH is also known as Human Growth Hormone. Because of this act, the only other way to get steroids is on the black market.   Ã‚  Ã‚  Ã‚  Ã‚  There are many reasons why people take steroids. Before you look at the side effects of steroids, they seem as a great advancement in medicine. Steroids increase muscle mass, strength, endurance, and recovery rates. They also heighten aggression, improve performance in sports and on the job, increase muscle definition and leanness, and they maintain your appearance while aging. Although steroids help you greatly in muscular development, it has terrible side effects. The major side effects from abusing steroids can include liver tumors and cancer, yellowish pigmentation of skin, tissues, and body fluids, fluid retention, high blood pressure, increases in the bad cholesterol, and decreases in the good cholesterol. Other side effects include kidney tumors, severe acne, and trembling. In addition, there are some gender and age specific side effects.   Ã‚  Ã‚  Ã‚  Ã‚  Men may experience the shrinking of the testicles, reduced sperm count, infertility, baldness, development of breasts, and increased risk for prostate cancer. However woman may experience growth of facial hair, male-pattern baldness, changes in or killing of the menstrual cycle, enlargement of the clitoris, and a deepened voice. Adolescents who use steroids may have their growth halted prematurely through premature skeletal maturation and accelerated puberty changes.   Ã‚  Ã‚  Ã‚  Ã‚  There have been many reports of steroid users demonstrating violent behavior.

Compare Darwin’s Theory of Evolution to Lamarck’s Essay

There have been many theories explaining evolution. Two of the most well known of these are the Lamarckian theory, which was mostly believed before the Darwinian theory, which is the theory which is believed to have the highest probability of it being the case. In Lamarck’s theory of evolution, he stated that an organism was able to pass on required traits to their offspring. This theory is commonly shown through the giraffe’s evolution to having longer legs and a longer neck. According to Lamarck’s theory, during a bad season when all the vegetation in lower areas (easily reachable by the giraffe with the shorter neck and legs) had gone, the giraffes were forced to stretch their necks, to reach for food on a higher level. These giraffes would then have longer necks and would pass this trait of having a longer neck to their offspring. Lamarck’s theory then states that over time, each generation will pass on their traits of having a longer neck than the previous generation, accounting for the evolution of the giraffe from being an animal with a shorter neck and legs, to one seen today with its long neck and legs. Darwin’s theory relied on a process of natural selection. In his theory, at the start there would have been many giraffes of varying heights, which would be so due to the variations in organisms through the process of sexual reproduction. Darwin stated that all life competes in a struggle to exist. Therefore, during a dry season when there is not as much nutrition available on lower levels for the shorter giraffes, the giraffe’s that are more likely to survive are the ones with the longer necks and legs. The giraffes with the shorter necks and legs would die, disabling them to pass on their genes for the shorter legs and necks, resulting in a new generation of longer necked and legged giraffes. These theories can also be shown using other animals such as the horse. The ancestors of horse were once much smaller than the modern day horse. They had four toes on the front legs and three on the back. These toes were padded so they allowed the horse to easily move through wet ground. As the horse moved out of the forest and swamp areas to the plains its head, neck and legs became longer, allowing faster movement and it adjusted to standing  on only one toe. Lamarck would have said that this change was from the horse changing its traits to match its environment. The horse would have had to struggle to run faster to escape from predators when out in the open, and therefore developed a stronger, body to cope with the need for speed. Darwin’s theory would of course differ to this, saying that the horses that survived were the ones, which were able to run faster. These would have been the horses with the longer legs, and so the genes for the horses with the longer legs would be passed on to the next generations. These theories have been widely believed to be the explanation for the varying species of animals on the earth. It is well known now that the Lamarckian theory is not possible, and therefore the Darwinian theory is the explanation that is believed to be the means of evolution. This, however has not yet been proven, however the probability is very great.

Nelson Mandela And His Life And Work History History Essay

Nelson Mandela. The adult male everyone knows about. The adult male who was against the Apartheid. He did n't merely speak about it, but he besides did something about it. He ‘s a great adult male. In this chapter we ‘ll speak about his life, his actions and how these actions have changed the universe. Biography Rolihlahla Mandela, subsequently called Nelson Mandela, was born on July 18, 1918 in Mvezo. A bantam small town in the state of Transkei, South Africa. Mandela ‘s male parent had three married womans. The 3rd one was Mandela ‘s female parent, here name was Nosekeni Fanny. Mandela ‘s male parent was destined to be a main and served as a counselor to tribal heads. But this was non traveling tot happen. Over a difference with the local colonial magistrate, he lost his rubric and luck. Because of this event, they were forced to travel tot Qunu. This was an even smaller small town so Mvezo and lay in North of it. The small town was n't developed by far. There were n't any roads, merely some foot waies. The household lived in huts and could merely afford the local crop to eat. This consisted corn, sorghum, Cucurbita pepo and beans. Water could merely be fetched from springs and watercourses and cookery was done outdoors. Mandela ‘s household had a truly heard clip, but he himself could still be a kid. He played games with the other male childs who lived in the small town. Rolihlahla ‘s male parent ‘s friends suggested that Rolihlahla would travel to the Methodist church and so he became the first in his household to go to school. As was the usage at the clip, Rolihlahla got a new first name. This was likely due to significance of his old name: ‘troublemaker ‘ . His instructor told him his new name would be ‘Nelson ‘ . Since so Mandela was no longer called Rolihlahla, but Nelson Mandela. The name of the adult male we know today as a really great adult male in history. When Nelson Mandela was nine old ages old his male parent died of a lung disease. This changed his life dramatically. He was adopted by Chief Jongintaba Dalindvebo, the moving trustee of the Thembu people. Old ages earlier Nelson ‘s male parent had recommended Jongintaba to be made a head. So this was done as a gesture to him. This acceptance meant that Nelson had to go forth the small town Qunu. He moved to Mqhekezweni, the provincial capital of Thembuland. Here was the head ‘s royal abode where Nelson would be populating in the following few old ages. His new household treated him good. Nelson was given the same position and duties as the trustee ‘s two other kids, his boy Justice and his girl Namafu. Nelson besides got instruction. He studied English, Xhosa, history and geographics at a one-room school next to the castle. During his stay in Mqhekezweni, a few senior trustees came to the Great Palace on official concern. It was caused by them that he got so interested by African history. They told him about South Africa. About the manner how the people lived in peace before the white people had arrived. The people of South Africa lived as brothers until the white work forces ruined that bond. The white work forces took all the land for themselves and left nil for its original dwellers. This cognition has had a great influence on his ulterior life. When the male childs in Africa were 16 old ages old, they would do the passage from boyhood to manhood. So would Mandela. This was a ritual every male child would travel through in his life. When it was Mandela ‘s bend, it was n't an ordinary rite. Most of the clip the rite was something you should be happy about. You were turning into a adult male! But this clip it was n't that cheerful. The chief talker at the ceremonial, Chief Meliggili, spoke unhappily of the immature work forces as a coevals enslaved in their ain state. Their land was under the control of the white work forces, so they would ne'er hold the power to regulate themselves, he said. Because of this it was non the ceremonial the immature male childs had expected. But at least, Nelson had eventually turned into a adult male! In 1939, the twelvemonth when Nelson turned 18, he went to the University College of Fort Hare. This was the lone residential Centre of higher acquisition for inkinesss in South Africa. You can compare Fort Hare with Oxford or Harvard. Mandela took all the needed classs, but focused on Roman Dutch jurisprudence. This was to fix for a calling in civil service as an translator or clerk. This was the best profession you could obtain as a black adult male. A few hebdomads after Nelson got home from the University College of Fort Hare, the trustee Jongintaba announced he had arranged a matrimony for him. Mandela was shocked and felt trapped. He ran off to Johannesburg, where he had a assortment of occupations. While he was working he besides was finishing his unmarried man ‘s degree via correspondence classs. After this he went to the University of Witwatersrand where he studied jurisprudence. During his survey he became actively involved in the anti-apartheid motion and joined the African National Congress ( ANC ) in 1942. Within the ANC, a little group of immature Africans ( Nelson Mandela included ) bonded together, naming themselves the African National Congress Youth League. They wanted to alter the old tactics of polite petitioning. They wanted to make something that was effectual. In 1949 the ANC officially adopted the methods of the Youth League. From now on they used methods like work stoppages, civil noncompliance and non-cooperation with the white work forces. Their end was to acquire redistribution of land, merchandise brotherhood rights and free and mandatory instruction for all the black kids. For 20 old ages Nelson directed a run of peaceable, non-violent rebelliousness against the South African authorities and its racialist policies. These runs included the Defiance Campaign in 1952 and the Congress of the Peoples in 1955. But non everything was condoned. In 1956 Mandela and 150 others were arrested, but besides instantly acquitted. During this period, a new organisation was formed, the Africanists. Another group of black militants, but who disagreed with the methods of the ANC. They thought it was uneffective. By 1959 the ANC lost much of its support, because of the Pan-Africanist Congress. The new name of the Africanists, who had grown in figure of back uping people. Mandela, who was ever committed tot non-violent protest, began to believe otherwise by 1961. He believed the lone manner to accomplish alteration was armed battle. Because of this new idea he co-founded Umkhonto we Sizwe, besides known as MK. This was an armed outgrowth of the ANC. It was formed to stop apartheid utilizing guerrilla war tactics and sabotage. He organized a three-day national workers work stoppage in 1961, which led to his apprehension in 1962. He was sentenced to five old ages in prison for the work stoppage. But this was n't the concluding determination. He was brought to test once more in 1963, where he and ten other ANC leaders were sentenced to life imprisonment for political offenses, including sabotage. Mandela was imprisoned on Robben Island. Here he received the lowest degree of intervention because of the fact that he was a black political captive. However, Mandela spent a portion of his imprisonment rather good. He earned a Bachelor of Law degree through a University of London correspondence plan. About everyone in the universe knew Mandela by so. He was a symbol of black opposition. Mandela got much international support, but this was n't that helpful for him. The South African authorities kept him locked up on Robben Island. Mandela did n't remain on Robben Island. In 1982 he and the other ANC leaders were moved to Pollsmoor Prison. This was to enable contact between the captives and the authorities of South Africa. Many offers were made to Mandela. So offered president P.W. Botha in 1985 Mandela ‘s release in exchange for abdicating armed battle, but this offer was rejected. The force per unit area continued to lift. Not merely local, but besides international. In 1989 Botha suffered a shot. Because of this he was replaces by Frederik Willem de Klerk. This alteration of president led to the release of Mandela in 1990. Not merely this had changed. The ANC were unbanned, the limitations on political groups were removed and executings were suspended. Mandela did n't desire foreign powers to interfere. He stated a committedness to work toward peace. But he did n't stop the armed battle of the ANC. This would go on until the black bulk received the right to vote. In 1991 Mandela was elected president of the ANC. He kept negociating with president De Klerk. He still wanted multi-racial elections. The white people were willing to portion the power, so that was n't the job. The job was that many black Africans wanted a complete transportation of power. The dialogues were frequently really labored and there were a batch of violent eruptions trough the whole state. Besides Mandela played a function in the agitation of the land. He made certain the presentations and armed opposition went on, to put an even heavier force per unit area on the South African authorities. Mandela ‘s tactics led to success. On April 27, 1994, the first democratic elections were held in South Africa. A few months subsequently, on May 10, 1994, Mandela ( who was 77 old ages old ) was chosen to be the state ‘s first black president. De Klerk was became his first deputy. Nelson and de Klerk won the Nobel Prize for Pease in 1993, for leveling apartheid. Mandela published his autobiography ‘Long Walk to Freedom ‘ in 1994. Much of this book had he, in secret, written while he was in prison. Mandela worked while he was president on the relationship between the black and the white people. He used the state ‘s enthusiasm for athleticss for this. He encouraged the black work forces to back up the white work forces with their athleticss, in peculiar Rugby. And so he encouraged the white work forces to back up the black work forces with their athleticss. This led to Mandela ‘s end, a better relationship between those to groups. Not merely did he work on this, he besides worked on the state ‘s economic system. He protected it from prostration. Mandela had formed a Reconstruction and Development Plan, which led to the creative activity of new occupations, lodging and basic wellness attention. In 1996 he signed into the jurisprudence of South Africa that everyone was equal to each other and that everyone had the right to vote. In 1999 Mandela retired from active political relations. He still maintained a busy agenda. He had founded his ain organisation: the Mandela Foundation. This foundation built schools and clinics in South Africa. He besides published a figure of books. Those were about his life and battle. Mandela was diagnosed and treated for prostate malignant neoplastic disease. Three old ages subsequently, in June 2004, he announced his formal retirement from public life. He returned to his native small town of Qunu. This was at the age of 85 old ages. In July 2007, Mandela convened a group of universe leaders in Asia, the Middle East and Africa. Among them Graca Machel, Desmond Tutu, Kofi Annan, Ela Bhatt, Gro Harlem Brundtland, Jimmy Carter, Li Zhaoxing, Mary Robinson and Muhammad Yunus. They named themselves ‘The Elders ‘ . This group wanted to happen solutions to jobs around the universe. The fought for peace, adult females ‘s equality, an terminal to atrociousnesss and democracy. Mandela besides fought against AIDS. This disease killed his boy, Makgatho Mandela in 2005. Mandela was married three times. To Evelyn Ntoko Mase from 1944 boulder clay 1957, they had four kids. From 1958 boulder clay 1996 he was married with Winnie Madikizela-Mandela with whom he had two girls. He ‘s now married to Gra & A ; ccedil ; a Machel since 1998. A closer expression to his actions