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The short-term BEP exposure resulted in a decrease in scavenger receptor class-B1 and an increase in luteinizing hormone receptor (LHR). The AC with or without BEP has increased the levels of LHR, 3β-hydroxysteroid dehydrogenase (3β-HSD) and 17β-HSD, but without significant changes in testosterone levels. The three cycles of BEP up-regulated the expression of steroidogenic acute regulatory protein (StAR) and down-regulated that of cholesterol side chain cleavage enzyme (P450scc), cytochrome p450 17A1 (Cyp17A1, recovered by the AC) and 17β-HSD, associated with significant reduction in testosterone levels. The three cycles with the recovery time led to decreases in LHR, StAR, P450scc and Cyp17A1 and increases in 3β-HSD and 17β-HSD. The AC did not enhance the recovery of the enzyme levels. testosterone.

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This study compared the effects of order of muscle groups’ exercised (larger to smaller muscles vs. smaller to larger muscles) on the acute levels of total testosterone, free testosterone and cortisol during resistance training (RT) sessions. Healthy male participants (n=8; age: 28.8 ± 6.4 years; body mass: 87.0 ± 10.6 kg; body height: 181.0 ± 0.7 cm; BMI: 26.5 ± 4.1) were randomly separated into two experimental groups. The first group (LG-SM) performed an RT session (3 sets of 10 repetitions and a 2 min rest period) of the exercises in following order: bench press (BP), lat pulldown (LP), barbell shoulder press (BSP), triceps pushdown (TP) and barbell cut (BC). The second group (SM-LG) performed an RT session in following order: BC, TP, BSP, LA, BP. Blood was collected at the end of the last repetition of each session. Control samples of blood were taken after 30 min of rest. Significant differences were observed in the concentrations of total testosterone (p < 0.05), free testosterone (p < 0.0001) and cortisol (p < 0.0001) after both RT sessions in comparison to rest. However, when comparing LG-SM and SM-LG, no significant differences were found. The results suggest that, while RT sessions induce an acute change in the levels of testosterone and cortisol, this response is independent of the order of exercising muscle groups. testosterone.

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Guidelines for cervical cancer screening have evolved rapidly over the last several years, with a trend toward longer intervals between screenings and an increasing number of screening options, such as Pap/HPV co-testing and HPV testing as a primary screening. However, gynecological recommendations often do not include clinical considerations specific to patients on the female-to-male (FTM) spectrum. Both patients and providers may not accurately assess risk for HPV and other sexually transmitted infections, understand barriers to care, or be aware of recommendations for cervical cancer screening and other appropriate sexual and reproductive health services for this patient population. We review the evidence and provide guidance on minimizing emotional discomfort before, during, and after a pelvic exam, minimizing physical discomfort during the exam, and making adaptations to account for testosterone-induced anatomical changes common among FTM patients. testosterone.

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To assess testicular function after standard dose ifosfamide, we evaluated 6 young adult osteosarcoma survivors (median age at diagnosis, 16.5 y; median follow-up, 4 y) treated with ifosfamide (median dose, 45.5 g/m) as part of a chemotherapy regimen (adriamycin/cisplatin/methotrexate/ifosfamide/± muramyl-tripeptide-phosphatidyl-ethanolamine). Four of 6 survivors (67%) had abnormal semen analysis (2 oligospermic, 2 azoospermic). Of those, 1/4 had reduced testicular volume, and 2/3 elevated FSH levels. All reported adequate sexual function, 6/6 had normal testosterone levels, but 4/6 had elevated LH levels. Ifosfamide exposure in the context of this regimen was associated with a high likelihood of impaired spermatogenesis and Leydig cell insufficiency. testosterone.

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The aim of this study was to investigate whether the androgens testosterone and dihydrotestosterone (DHT) and the antiandrogenic fungicide vinclozolin (Vnz) exert proapoptotic effects on porcine granulosa cells (GCs), and to examine the roles of these compounds in follicular atresia. Granulosa cells isolated from pig follicles were cultured for 24 hours, and then exposed to 0.1 μM testosterone, 0.1 μM DHT, 14 μM Vnz, or the equivalent concentrations of testosterone and Vnz or DHT and Vnz for a further 24 hours. Apoptosis and necrosis of the GCs were determined via Hoechst staining and flow cytometry analyses of annexin V-stained cells. Whole porcine follicles were also exposed to the same compounds and combinations of compounds for 24 hours. The sections were stained with hematoxylin and eosin for morphologic assessments, and a Terminal deoxynucleotidyl Transferase Biotyn-dUTP Nick-End Labeling (TUNEL) assay was performed to determine the number of apoptotic cells. The progesterone and estradiol concentrations secreted into the culture media by isolated GCs and follicles were also measured. Exposure to the androgens resulted in an increased number of apoptotic GCs both in vitro and in the organotypic model. Vinclozolin exposure increased and decreased the number of necrotic and apoptotic GCs, respectively. Furthermore, compared with control follicles, those exposed to testosterone, DHT, or Vnz displayed enhanced atresia, and coadministration of Vnz attenuated the promotive effect of these androgens on atresia. Estradiol secretion was stimulated by the combination of testosterone and Vnz, whereas exposure to Vnz alone reduced it. Progesterone production declined after the combined addition of androgens and the antiandrogen. In summary, Vnz caused massive necrosis of GCs in vitro and induced apoptosis of GCs in whole follicles. The androgens testosterone and DHT enhanced these effects. The results presented here suggest that selective destruction of porcine follicles is a serious consequence of exposure to Vnz, and may lead to premature ovarian failure in affected animals. testosterone.

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In mutant mice, the activity of CYP3A was reduced to 68% of the control in females, but remained unchanged in males. Chronic restraint stress increased CYP3A activity in mutant mice only. testosterone.

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