Nutritionally manipulated lean (68 kg) and obese (87 kg) ovariectomized ewes were administered estradiol-17 beta (E2) or sham implants. Ewes individually had ad libitum access to corn silage. Rates of de novo lipogenesis, palmitate esterification, and glycerol and fatty acid release were determined
The interactive effects of sex steroids and obesity on glucose metabolism and pancreatic secretion and organ removal of insulin were determined in multicatheterized lean and obese sheep by multiplying venoarterial concentration differences by plasma flows. Ovariectomized lean and dietary obese ewes
In a study designed to compare plasma androgens in obese, anovulatory women with non-obese, ovulatory women, we found a statistically significant increase in plasma androstenedione and testosterone in obese, anovulatory women. Plasma androstenedione was 252 +/- 18 ng/dl (mean +/- SEM) in the obese
Infertility and hypercytolipidemic utero-ovarian involution are recognized consequences of the diabetes-obesity syndrome (DOS) in C57BL mice with either obese (ob/ob) or diabetes (db/db) single gene mutations. We have evaluated the interdependent deleterious influences of both mutation types and
Effects of degree of obesity on basal concentrations of insulin, glucose, thyroxine (T4), triiodothyronine (T3), estradiol-17 beta (E) and progesterone (P) were measured in serum from 50 estrous and 73 diestrous Holstein heifers and the insulin response to glucose infusion was assessed in diestrous
The Ob gene product, leptin, is secreted by adipocytes and is required for fertility in the mouse. Leptin-deficient mice are obese and infertile, symptoms reminiscent of polycystic ovary syndrome (PCOS). Prior studies have shown that serum leptin levels are elevated in a significant sub-population
Arginine vasopressin responses to osmotic (0.1 ml.kg-1.min-1 NaCl), orthostatic (standing upright and maintenance of orthostatic position for 20 min), and hypoglycemic (0.15 IU/kg insulin) stimuli were evaluated in women with polycystic ovaries and in normal subjects. Blood dehydroepiandrosterone,
Women are more susceptible to the development of Torsades de Pointes ventricular tachycardia and have a longer heart rate-corrected QT interval than men. A causal role for estrogen has been implicated. The purpose of this study was to investigate if hormone replacement therapy (HRT) resulted in any
Cannabinoid type 1 (CB1) receptor antagonists have been developed for the treatment of obesity, but a major disadvantage is that they cause unwanted psychiatric effects. Selective targeting of peripheral CB1 receptors might be an option to circumvent these side effects. Multidrug
Gonadotropin-releasing hormone (GnRH) is a key hypothalamic peptide that controls the secretion of pituitary gonadotropins, particularly luteinizing hormone (LH), and hence gonadal function. Hypothalamic GnRH is released in a pulsatile manner. In the female, the pattern of GnRH pulses, i.e., pulse
The effects of graded differences in body condition score (BCS) on ovarian follicular development, granulosa cell steroidogenic potential, and growth hormone (GH)-insulin-like growth factor-I (IGF-I) relationships were examined during the puerperium in beef cows fed high fat diets. Cows (n = 36)
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