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Communication about safer sex and serostatus disclosure in HIV-positive adolescents with haemophilia (1995)

NUSS, RACHELLE ; Smith, Peter S. ; Cotton, David ; [et al.]

Oxford, UK : Blackwell Publishing Ltd

Haemophilia 1 (1995), S. 0

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ISSN: 1365-2516

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Medicine

Notes: Objectives. To assess the attitudes, beliefs and feelings of adolscents and young men with severe haemophilia with respect to discussing safer sex and disclosing their human immunodeficiency virus (HIV) seropositivity to potential sex partners. Methods. Fifty-nine males with haemophilia from throughout the US answered open-ended questions. Results. Talking about avoidance of transmitting AIDS and disclosing one's seropositivity was beneficial, moral and wise. Nevertheless, this was exceedingly, difficult, unpleasant, and fraught with fear of rejection and alienation. Communication was approved by family, friends, and health-care providers. Facilitators of communication were: knowledge and an accepting attitude about persons with HIV, a supportive person to assist with discussion, and environmental cues. Conclusion. This first report of HIV-infected adolescents and young adults reveals that although they endorse discussing safer sex and disclosing their HIV seropositivity, they are painfully aware of the social and interpersonal risks of such extremely difficult communications.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1365-2516.1995.tb00053.x

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Gravity-directed calcium current in germinating spores of Ceratopteris richardii (2000)

Chatterjee, Ani ; Marshall Porterfield, D. ; Smith, Peter S. ; [et al.]

Springer

Planta 210 (2000), S. 607-610

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ISSN: 1432-2048

Keywords: Key words: Calcium –Ceratopteris (Ca, gravity) – Developmental polarity – Gravity – Ion current – Nifedipine

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Abstract. Gravity directs the early polar development in single cells of Ceratopteris richardii Brogn. It acts over a limited period of time during which it irreversibly determines the axis of the spore cell's development. A self-referencing calcium selective electrode was utilized to record the net movement of calcium across the cell membrane at different positions around the periphery of the spore during the period in which gravity orients the polarity of the spore. A movement of calcium into the cell along the bottom and out of the cell along the top was detected. This movement was specific, polarized, and strongest in a direction that opposed the vector of gravity. Treatment with nifedipine, a calcium-channel blocker, diminished the calcium current and caused the cell to lose its responsiveness to the orienting influence of gravity. Results shown suggest that calcium plays a crucial role in the ability of a single cell to respond to gravity and in the subsequent establishment of its polarity.