Posts Tagged ‘biological’

HIV-positive women break the silence

Monday, May 30th, 2011

HIV-positive women break the silenceWomen living with HIV will for the first time the protagonists of a project to meet their living conditions and health in thirteen Latin American countries. This initiative aims to get to know their personal stories to communicate “what the numbers say no” and demand government policies that meet s specific needs.

An estimated 550 000 adults living with HIV in the region and represent 34% of the 1.6 million people infected on the continent. The project dedicated to this group, which is disclosed under the Global Day of Action for Health of Women, held on 28 May, has the support of UNAIDS, and is carried out by the Latin Movement Caribbean and Positive Women (MLCM +), which since 1999 brings together organizations from 19 countries in the region to improve the quality of life of those living with HIV / AIDS.

“Women are now one of the groups most affected by the epidemic, for reasons both biological and socio-cultural, but are outside of public policy,” said a statement.

Is that the main mode of transmission for women is through heterosexual sex without a condom, which refers to many acquire the virus from their husbands or intimate partners. “However, until now there had studied the risks and vulnerabilities of women to HIV, such as the relationship between the possibility of becoming infected and living conditions such as violence, abuse, sexism, lack of opportunity or education, among other factors, “said MLCM +.

The agency claims to know “this information is key to develop actions in line.” Therefore, it is proposed to generate and organize quantitative and qualitative data on the positive women’s lives, especially their sexual and reproductive rights, and those obstacles, strengths and weaknesses that were found from living with the virus. The research provides for the development of interviews with adults with HIV to disclose their stories.

The project “Research Diagnostic: vulnerability of women living with HIV / AIDS in the region” and is being developed in 13 Latin American countries: Argentina, Brazil, Bolivia, Chile, Colombia, Cuba, El Salvador, Paraguay, Uruguay, Venezuela, Peru, Guatemala and Panama.

“Some respondents reported having experienced abuse and violence by medical and health services, for example, labeling them” irresponsible “if they were pregnant, discourage them from having children, or directly to force them to be sterilized, even though there are treatments for baby born healthy. Their experiences are part of this research with the hope that it will serve to “prevent the recurrence of these situations with other mujeres’y ‘can be embedded in this society as it should, as human beings with rights,’” said the statement MLCM + .

The study also seeks to make visible the HIV vulnerability of women who are not considered within the “risk groups” such as housewives, wives or intimate partners.

Violet Ross, a member of the movement in Bolivia, he said: “If a woman wants to be considered a vulnerable group to be sexual workers, drug users or pregnant women that were not present in public policy.” Marcela Asian, president of MLCM +, said: “Women with HIV are invisible on the agendas of governments and to be invisible there is no plans, no policies, and resources aimed at prevention.”

The positive involvement of activists in each of the stages of work-study from planning to implementation and dissemination is one of the newest components of the project.

“By studying, I myself will I be able to show the reality of my classmates. It is work that we perform for our peers, for our partners, “said one of the women participating in this initiative.

A biological explanation for anorexia?

Sunday, May 29th, 2011

drug amphetamineFor most people find it hard to diet, especially when last several months. But not so with people with anorexia nervosa, to whom the decision to stop eating may cause death. So far, the strong refusal to eat had no clear explanation. A new study at the University of California provides new clues for understanding why people have anxiety disorder after eating, instead of the normal feeling of pleasure or satisfaction.

“This is the first study to show that there is a biological cause for this paradoxical response to food,” says Walter Kaye, a psychiatry professor and director of Research and Treatment of eating disorders at the university. During the last decade, failed to understand in more detail how food triggers rewarding sensations. These brain mechanisms involving dopamine, a chemical that is released in the brain when animals or people eat tasty food.

Kaye and his group of researchers selected women with anorexia nervosa and without eating disorders and they generated ‘stimuli of dopamine “using a dose of the drug amphetamine, which also releases the chemical in the brain. Then, using a technique called positron emission tomography (PET for short in English) obtained images of brain function in response to dopamine.

The results of this work, published in the International Journal of Eating Disorders, suggest that in healthy women, the release of dopamine produced sensations of pleasure in the brain region known as “reward center.” However, in women with anorexia nervosa, released dopamine produced feelings of anxiety. In these cases, the scientists could see that it activated a different brain region, which is related to the “concern about the consequences.”

For Kaye, the study could explain why sufferers of anorexia nervosa have difficulty eating and weight gain. “It is possible that dopamine generated by the food they generate intense feelings of anxiety and unpleasant,” said the expert.

Because the study was conducted in patients who were recovering anorexic from at least one year, the researchers suggest that the anxiety experienced is due to existing features in the patients and extremely low birth weight caused by the disease.

At the moment it is premature to anticipate the impact of these results in therapies for anorexia. There is still no proven treatments to reduce the core symptoms of the disease, such as anxiety induced by food. For experts, it remains critical to ensure that patients eat and gain weight to treat this disease effectively.