CONTEXT Acute decreases in strength have been associated with risky biomechanical strategies that might predispose one to injury. Whether acute changes in thigh muscle torque occur across the menstrual cycle remains equivocal. OBJECTIVE We compared maximal voluntary isometric contraction (MVIC) torque of the knee flexors and extensors between the early follicular (EF) and either the early lut...

background: premature luteinization during in vitro fertilization was commonly happened before the introduction of gnrh analogues. high level of unwanted progesterone is associated with adverse pregnancy outcome and is thought to be induced by inappropriate lh elevation.objective: to evaluate the progesterone level on the day of human chorionic gonadotropin (hcg) triggering in gnrh agonist and ...

Influences of estrogen and progesterone on the development of hyperinsulinemia and augmented pancreatic islet insulin secretion during pregnancy were assessed in this study. Groups of female rats were injected subcutaneously for 21 days with varying daily dosages of estradiol benzoate or progesterone in oil. On day 21, pancreatic islets were isolated by a collagenase method. Total insulin secre...

Introduction: Following a traumatic brain injury (TBI), the excessive release of proinflammatory cytokines is major cause of cerebral edema that can cause permanent neuronal loss. This study examined the changes in brain concentrations of proinflammatory cytokines IL-1, IL-6, TNF-α and TGF- after different doses of estrogen or progesterone treatment in brain-injured rats at 6 and 24 h post...

Breedtype and season appear to modify the reproductive capacity of cattle. This study was designed to elucidate the effect of these factors on the bovine corpus luteum. Six Brahman (B) and six Hereford • Holstein (H) heifers were bled via coccygeal vessel puncture on d 2, 4, 6, 8, 10, 12 and 13 postestrus within 20 d of both the summer and winter solstices. On d 13 postestrus, the corpus luteum...

the present study was designed to investigate the impact of exogenous administration of gnrh (receptal vet®, intervet pharmaceuticals ltd., india) on serum progesterone profile and conception rates during mid luteal phase of estrous cycle in buffaloes. estrus was induced using cyclix 2 ml. i/m. (intervet india pvt. ltd., india) and animals were bred naturally during observed estrus. the buffalo...

We tested the hypotheses that progesterone enhances the negative feedback actions of testosterone in rams and that this occurs through actions at the hypothalamus. In the first part of this study, blood samples were collected every 10 min for 12 h before and after 7 days of treatment (i.m.) of castrated Romney Marsh rams (n=5 per group) with vehicle, progesterone (4 mg/12 h), testosterone (4 mg...

OBJECTIVE This study was performed to assess the prognostic value of serum hCG, progesterone, and inhibin A levels measured at 11 days post-ET for predicting pregnancy outcome in women participating in IVF. METHODS Between May 2005 and April 2008, sera were obtained from 70 infertile women who underwent IVF-ET at 11 days post-ET and stored. HCG, progesterone, and inhibin A levels were measure...

To evaluate HRT action over hemostasis we treated 45 postmenopausal women, divided in: Group 1 (N= 22, hysterectomized) and Group 2 (N= 23, with uterus), at the average age of 51.6 years and average BMI of 27.1 kg/m(2), with no significant difference in the base-line, with 17beta-oestradiol, 50 mcg/day, transdermic and continuous (group 1) associated to micronized progesterone 200 mg 12 days pe...