Transgender HIV prevention: implementation and evaluation of a workshop. (1/188)

Virtually no HIV prevention education has specifically targeted the transgender community. To fill this void, a transgender HIV prevention workshop was developed, implemented and evaluated. A 4 h workshop, grounded in the Health Belief Model and the Eroticizing Safer Sex approach, combined lectures, videos, a panel, discussion, roleplay and exercises. Evaluation using a pre-, post- and follow-up test design showed an increase in knowledge and an initial increase in positive attitudes that diminished over time. Due to the small sample size (N = 59) and limited frequency of risk behavior, a significant decrease in unsafe sexual or needle practices could not be demonstrated. However, findings suggested an increase in safer sexual behaviors such as (mutual) masturbation. Peer support improved significantly. Future prevention education should make special efforts to target the more difficult-to-reach, high-risk subgroups of the transgender population.  (+info)

Sex steroids, insulin, and arterial stiffness in women and Men. (2/188)

Arterial stiffness may be influenced by sex steroids and insulin; the association with fasting insulin level may be stronger in women than in men. Therefore, we analyzed the effects of sex steroid administration on (1) arterial stiffness and (2) the relationship between fasting insulin level and arterial stiffness. Twelve male-to-female transsexuals were treated with ethinyl estradiol and cyproterone acetate, and 18 female-to-male transsexuals were treated with testosterone esters, with assessments made at baseline and after 4 and 12 months. Changes in distensibility and compliance coefficients (DC and CC, respectively) of the common carotid artery, femoral artery (FA), and brachial artery (BA) were analyzed in relation to changes in fasting plasma levels of glucose, insulin, HDL-cholesterol, and triglycerides. After 4 months of estrogens and antiandrogens in men, significant reductions in the CC and DC of the FA (P=0.006 and P=0.04, respectively) and BA (P=0.04 and P=0.04, respectively) were observed. In women, testosterone, on average, did not affect DC or CC, but the changes in fasting insulin level were strongly negatively associated with changes in the CC and DC, especially in the FA and BA. These associations were significantly less strong in genetic men and were independent of age, mean arterial pressure, and glucose and lipid levels. This experimental study shows (1) that short-term administration of estrogens and antiandrogens increases FA and BA stiffness in men and (2) that the fasting insulin level is a stronger determinant of arterial stiffness in women than in men.  (+info)

Estrogen improves acetylcholine-induced but not metabolic vasodilation in biological males. (3/188)

We have previously shown that chronic estrogen therapy improves endothelium-dependent vasodilation in the resistance vessels of biological males. Whether this is nitric oxide (NO) mediated and whether estrogen improves metabolic vasodilation is unknown. Resting forearm blood flow (FBF), ACh-induced vasodilation, and functional hyperemic blood flow (exercise) were assessed before and after the inhibition of NO with N(G)-monomethyl-L-arginine (L-NMMA) in 15 male-to-female transsexuals prescribed estrogen and in 14 age-matched males. Resting FBF was similar in the two groups and was similarly (P = 0.44) but significantly reduced by 48% after infusion of L-NMMA (P < 0.0001). The ACh dose-response relationship was shifted upward and to the left in the transsexual compared with the male group (P < 0.01). After the inhibition of NO, however, the difference in the ACh dose-response curve between the two groups was abolished (P = 0.15). Peak functional hyperemic blood flow was similar for the two groups (P = 0.94). L-NMMA produced a significant (P < 0.01) but similar (P = 0.64) reduction in peak hyperemia in the two groups. The volume of blood repaid to the forearm 1 and 5 min after exercise was also reduced by L-NMMA (P < 0.0001); however, there were no differences between the two groups. This suggests that ACh-mediated NO-dependent vasodilation may be more sensitive to the effects of chronic estrogen than exercise-induced vasodilation. Long-term estrogen does not appear to improve exercise-induced metabolic vasodilation in biological males, despite the fact that NO contributes to this process.  (+info)

Oral, but not transdermal, administration of estrogens lowers tissue-type plasminogen activator levels in humans without affecting endothelial synthesis. (4/188)

Oral estrogen administration decreases plasma levels of tissue-type plasminogen activator (tPA), which may be explained by a decrease in endothelial tPA synthesis, an increase in its hepatic clearance, or both. In the present study, we determined (1) differences between oral (ie, via the liver) ethinyl estradiol and transdermal (ie, systemic) 17beta-estradiol administration on plasma antigen levels of tPA and plasminogen activator inhibitor type-1 before and after 4 months of hormone administration and (2) effects on endothelial tPA synthesis, by measuring the local increase in plasma tPA during venous occlusion of the upper extremity. Thirty transsexual males (median age 32 years, range 20 to 44 years ) were randomly assigned to either oral ethinyl estradiol (n=15) or transdermal 17beta-estradiol (n=15); both treatments included the antiandrogen cyproterone acetate (CA). Ten males were treated with CA alone. Seventeen transsexual females (median age 27 years, range 18 to 37 years) were treated with intramuscular testosterone esters. Only oral ethinyl estradiol plus CA but neither transdermal 17beta-estradiol plus CA, nor oral CA, nor parenteral testosterone lowered plasma tPA and plasminogen activator inhibitor-1 (P<0.001 for both). tPA release during venous occlusion was not affected by oral ethinyl estradiol plus CA in males (P=0.52) or by parenteral testosterone in females (P=0.89). These data are consistent with a previous observation, in rodents, that the decrease in tPA after oral estrogen administration can be explained by an increase in hepatic tPA clearance, leaving endothelial tPA synthesis unchanged, and suggest that these mechanisms also explain the decrease in tPA in humans.  (+info)

The prevalence of gender dysphoria in Scotland: a primary care study. (5/188)

A questionnaire was sent to senior partners in all general practices in Scotland designed to elicit experience of patients with gender dysphoria: a subjective experience of incongruity between genital anatomy and gender identity. Responses were received from 73% of practices. The prevalence of gender dysphoria among patients aged over 15 years was calculated as 8.18 per 100,000, with an approximate sex ratio of 4:1 in favour of male-to-female patients. One-third of gender-dysphoric patients known to practices had registered in the preceding 12 months, suggesting that patients with this condition are increasingly likely to present for medical care.  (+info)

Serum and urinary prostate-specific antigen and urinary human glandular kallikrein concentrations are significantly increased after testosterone administration in female-to-male transsexuals. (6/188)

BACKGROUND: The genes that encode prostate-specific antigen (PSA) and human glandular kallikrein (hK2) are up-regulated by androgens and progestins in cultured cells, but no published studies have described the effect of androgen administration in women on serum and urinary PSA or hK2. METHODS: We measured serum and urinary PSA and hK2 before, and 4 and 12 months post testosterone treatment by immunofluorometric methods in 32 female-to-male transsexuals. RESULTS: Mean serum PSA increased from 1.1 ng/L to 11.1 ng/L and then to 22 ng/L by 4 and 12 months post treatment, respectively; the corresponding mean values in urine were 17, 1420, and 18 130 ng/L, respectively. Serum hK2, another kallikrein closely related to PSA, remained undetectable at the three time points. However, urinary hK2 concentration rose from below the detection limit (<6 ng/L) before treatment to 18 and 179 ng/L by the 4th and the 12th month of treatment, respectively. All changes were statistically significant (P <0.001) at 4 months. CONCLUSIONS: Testosterone administration increases serum and urinary PSA and urinary hK2 in women. These measurements may be useful as indicators of androgenic stimulation in women.  (+info)

HIV-related tuberculosis in a transgender network--Baltimore, Maryland, and New York City area, 1998-2000. (7/188)

During June-August 1998, the Tuberculosis (TB) Control Program of the Baltimore City Health Department (BCHD) identified four cases of TB among young black men. Three of these men also had human immunodeficiency virus (HIV) infection. The four reported belonging to a social network of transgender persons (i.e., persons who identify with or express a gender and/or sex different from their biologic sex) (1). By October 1998, test results on Mycobacterium tuberculosis isolates from the four men demonstrated a matching 11-band DNA fingerprint pattern (2), suggesting that these case-patients were epidemiologically linked. This report describes the public health investigation of these TB case-patients to identify contacts in Baltimore and the New York City area (NYC); the findings suggest that an interstate outbreak of TB has occurred within a social network that includes transgender persons.  (+info)

The female-to-male transsexual patient: a source of human ovarian cortical tissue for experimental use. (8/188)

We demonstrated that ovaries removed from female-to-male transsexuals can be used as research material for ovarian cryopreservation, grafting and culture studies. A 21 year old female-to-male transsexual individual, who had been treated with androgens for 12 months, donated her ovaries removed in the sex reversal operation. She had normal numbers of, and proportions of, primordial (98.6%) and primary (1.4%) follicles in her ovarian cortex. After freezing and thawing the ovarian tissue was grafted to immuno-incompetent mice, which were stimulated by human recombinant FSH for 14 days, 10 weeks after transfer. Initiation of growth had occurred in the grafts in which only 79.4% of follicles were primordial, 17.1% primary, and in which there were also secondary and pre-antral follicles. Because long-term androgen treatment does not appear to cause depletion of the primordial follicle pool or affect the developmental capacity of the follicles, ovaries from individuals who undergo sex-reversal operations are an excellent source of tissue for research and maybe even for oocyte donation in the future.  (+info)