Search PubMed⌕ Search

Biomedical subjects

J Bowles

Publications and source records attributed to J Bowles.

42 records · Page 3Linked to original sources
PubMed1978

Dopamine receptors in the central nervous system.

Dopamine receptors in the central nervous system can be studied by measuring the specific binding of [3H]dopamine, [3H]haloperidol, d-[3H]LSD, [3H]dihydroergocryptine or [3H]apomorphine. The receptors are stereoselectively blocked by +)-butaclamol, a neuroleptic. All neuroleptics inhibit the specific binding of [3H]haloperidol in relation to their clinical potencies. The radioligand that desorbs most slowly from the receptor is [3H]apomorphine, thus making it a reliable ligand for dopamine receptors. Dopamine agonists that compete for [3H]apomorphine binding do so at concentrations that correlate with their potency in stimulating striatal adenylate cyclase. Structure-activity analysis, using [3H]apomorphine, confirms that the active dopamine-mimetic conformation is the beta rotamer of dopamine. Prolonged exposure in vitro of caudate homogenate to high concentrations of dopamine leads to increased binding of [3H]apomorphine or [3H]haloperidol, suggesting receptor "sensitization." Chronic haloperidol treatment of rats leads to an increased number of dopamine/neuroleptic receptors in the striatum, but a decrease in the pituitary.

Adenylyl Cyclases↗
PubMedDate not supplied

PHS grants for minority group HIV infection education and prevention efforts.

The Office of Minority Health (OMH) was established in December 1985 in response to recommendations developed by the Secretary's Task Force on Black and Minority Health. Originally, OMH's mission emphasized six health problems identified by the Task Force as priority areas: cancer, cardiovascular disease and stroke; chemical dependency; diabetes; homicide, suicide, and unintentional injuries; and infant mortality and low birth weight. OMH added HIV infection to the six health priority areas after epidemiologic data showed that the representation of blacks and Hispanics was disproportionately high among persons reported with AIDS. Strategies to eliminate or reduce high-risk behaviors associated with HIV infection need to mobilize racial and ethnic minority communities and rebuild social networks in order to foster sustained behavioral changes. OMH created the Minority HIV Education/Prevention Grant Program to demonstrate the effectiveness of strategies to expand the activities of minority community-based and national organizations involved in HIV education and prevention, as well as to encourage innovative approaches to address appropriately the diversities within and among minority populations. In 1988, grants totaling $1.4 million were awarded to four national and 23 community-based minority organizations. Project workers conduct information, education, and prevention interventions directed to specific groups within racial and ethnic minority communities. Interventions include education and prevention training, information activities, developing educational materials, and providing technical assistance. Project innovations include conducting HIV education and prevention training for families at home, presenting a play produced and performed by local teenagers, and developing a workshop and a manual to help minority service organizations to recruit and train volunteer staff members. Working with minority community-based and national organizations is an essential component of effective strategies for preventing HIV infection among racial and ethnic minorities. OMH's Minority HIV Education/Prevention Grant Program encourages minority groups to participate as partners in Federal, State, and local HIV prevention efforts.

Acquired Immunodeficiency Syndrome↗