... actions related to energy homeostasis, one must consider the other functions of leptin. Original parabiosis of ob/ob and db/db mutant mice with wild-type mice suggested that there was a factor that ob mice lacked that caused them to gain abnormal weight compared to wild-type mice, and that db mice were resistant to this factor (Coleman et al., 1978). When the ob gene was characterised ... main sites of fat storage, as seen by in situ hybridization; leptin circulates in plasma; plasma leptin levels correlate with adipose tissue mass; and recombinant leptin reduces fat content when admini...

• Word Count: 3450
• Approx Pages: 14
• Grade Level: Undergraduate

... Medical Research Institute (Sanford-Burnham) have discovered that an imbalance between an enzyme called neutrophil elastase and its inhibitor causes inflammation, obesity, insulin resistance, and fatty liver disease. The Sample population in the study was obese humans and mice. The researches hypothesis stated "the imbalance between neutrophil elastase and its inhibitor, α1-antitrypsin, is likely an important contributing factor in the development of obesity, inflammation ... found, some overweight, sedentary people respond to exercise by revving their food-reward systems, not dampen...

• Word Count: 2938
• Approx Pages: 12
• Has Bibliography
• Grade Level: Undergraduate

... from 12-20 week gestations. The transplantation of the stem cells were administered to the MPTP-lesioned mice 7 days after administration of MPTP. The results of this experiment were promising for the future of Parkinson's research. The lesioned mice had a 90% depletion of striatal dopamine and 70% destruction of SNpc neurons, which is similar to that seen in human Parkinson's disease (Liker ... et al. 2003). The results of the study showed that the human fetal stem cells survived at least 90 days in immunocompetent adult MPTP-lesioned mice. Other studies have shown that cell survival i...

• Word Count: 4190
• Approx Pages: 17
• Has Bibliography
• Grade Level: Undergraduate

... two dominant themes that play an important role in the book. The first theme is the structural conditions that impact and marginalize these women and men on a daily basis. The second theme is the search for respect and the reclaiming of dignity by these men and women. Through these themes Bourgois (2002:17) portrays that the people living in El Barrio are known to blame ... poverty. For example, as stated by a philanthropic aid society, "Basic requirements for even minimal living [are] lacking the looting of water pipes, radiators, toilets, and bathtubs- (Bourgois, 66) There are also many...

• Word Count: 3236
• Approx Pages: 13
• Has Bibliography
• Grade Level: Undergraduate

... result has been the creation of an unnecessary class of lawbreakers. Current legal drugs such as alcohol and tobacco have a far worse effect on the body than marijuana. No evidence exists that anyone has ever died of a marijuana overdose. Tests performed on mice have shown that the ratio of cannabinoids (the chemicals in marijuana that make you stoned) necessary ... of a felony conviction even though their sentences have been served (MacCoun, Rueter, 2001). This rate of disenfranchisement is seven times the national average. The racial disparities in drug arrests and convictions have ha...

• Word Count: 2648
• Approx Pages: 11
• Has Bibliography
• Grade Level: Undergraduate

... (Health Central) Although scientists have documented cases of MS in young children and elderly adults, symptoms rarely begin before age 15 or after age 60. Whites are more than twice as likely as other races to develop MS. In general, women are affected at almost twice the rate of men; however, among patients who develop the symptoms of MS at a later ... rest of the population. Furthermore, there is evidence that different combinations of the HLAs may correspond to variations in disease severity and progression. (Kaser) Studies of families with multiple cases of MS and research comparing...

• Word Count: 3706
• Approx Pages: 15
• Has Bibliography
• Grade Level: Undergraduate

... though abundant documentation of natural observations as well as experimental data. However unlike most scientific papers, his target audience is not specific to the men of his field. Instead, he argues against Creationism specifically and with it virtually all of Victorian England. Darwin carefully crafts his opening chapter to immediately grant him credit with the scientific community, but more ... diverge to create multiple species. He observes that some cats prefer to hunt mice, and some cats prefer rats. This behavior has also been observed to be inherited. Similarly, some wolves li...

• Word Count: 3127
• Approx Pages: 13
• Has Bibliography
• Grade Level: Undergraduate

... Health Central) Although scientists have documented cases of MS in young children and elderly adults, symptoms rarely begin before age 15 or after age 60. Whites are more than twice as likely as other races to develop MS. In general, women are affected at almost twice the rate of men; however, among patients who develop the symptoms of MS at a later ... rest of the population. Furthermore, there is evidence that different combinations of the HLAs may correspond to variations in disease severity and progression. ( Kaser) Studies of families with multiple cases of MS and research comparing...

• Word Count: 4268
• Approx Pages: 17
• Has Bibliography
• Grade Level: Undergraduate

... MS in young children and elderly adults, symptoms rarely begin before age 15 or after age 60. Whites are more than twice as likely as other races to develop MS. In general, women are affected at almost twice the rate of men; however, among patients ... who develop the symptoms of MS at a later age, the gender ratio is more balanced. (Waxman) To understand what is happening when a person has MS, it is first necessary to know a little about how the healthy immune system works. The immune system -- a complex network of specialized cells and ... that different combinations of the HLAs may c...

• Word Count: 4423
• Approx Pages: 18
• Has Bibliography
• Grade Level: Undergraduate