The relationship between health behavior and pain scale in patients with low back pain in Thailand.

The purpose of the study was to evaluate the relationship between health behavior and pain scale in patients with low back pain. One hundred eighty patients with low back pain attending the Orthopedic Unit at Sapasithiprasong Hospital in Thailand participated in the study. The participants completed a questionnaire related to demographic data and preventive health behavior, illness health behavior and sick role health behavior.

Diversity of HIV-1 subtype E in semen and cervicovaginal secretion.

Objectives: To characterize human immunodeficiency virus type 1 (HIV-1) subtype E variants in blood and genital fluid of infected Thai couples.

Study Design/methods: Blood and genital fluid were collected from 30 asymptomatic healthy HIV-1 subtype E infected couples from Bangkok, Thailand from 1995 to 1998.

Results: All 60 viruses in blood samples were identified as subtype E by heteroduplex mobility assay.

Simultaneous glutamate and gamma-aminobutyric acid release within ventrolateral medulla during skeletal muscle contraction in intact and barodenervated rats.

The purpose of this study was to determine if baroreflex modulates cardiovascular responses and neurotransmitter release within rostral (RVLM) and caudal (CVLM) ventrolateral medulla during static contraction of skeletal muscle using anesthetized rats. We evoked cardiovascular responses by a static muscle contraction and measured simultaneous release of glutamate and gamma-aminobutyric acid (GABA) in both the RVLM and CVLM using microdialysis probes, two inserted bilaterally into the RVLM and two into the CVLM. In intact anesthetized rats, a muscle contraction increased release of glutamate concomitantly in both the RVLM and CVLM along with significant increases in heart rate and arterial blood pressure.

Further evidence that extracellular serotonin in the rostral ventrolateral medulla modulates 5-HT(1A) receptor-mediated attenuation of exercise pressor reflex.

We determined changes in extracellular levels of glutamate, serotonin (5-HT), norepinephrine (NE), and dopamine (DA) within rostral ventrolateral medulla (RVLM) during 5-HT(1A)-receptor stimulation-mediated inhibition of cardiovascular responses to static muscle contraction using anesthetized rats. In ten rats, muscle contraction significantly increased (P<0.01) mean arterial pressure (MAP) by 29+/-4 mm Hg, heart rate (HR) by 25+/-3 bpm, and glutamate levels by 4.

Differences in sexual behaviour between HIV-infected pregnant women and their husbands in Bangkok, Thailand.

In a Bangkok antenatal clinic, we interviewed 102 HIV-infected pregnant women and their husbands, 30% of whom were HIV-negative. We evaluated these data by matched and unmatched analysis, compared men and women in stable couple relationships on a number of sociodemographic and risk factor indicators and investigated further whether there were any differences in sociodemographic or risk factor profiles between HIV-serodiscordant couples and seroconcordant couples. When compared to wives, more of the husbands were working (p = 0.