Stephanie Kienast

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[1] Accurately estimating the vertical flux of material reaching the seafloor from the overlying surface waters is essential for the paleoceanographic reconstruction of a wide variety of oceanic processes. Two approaches are currently being used. One consists of estimating mass accumulation rates (MAR) between dated horizons as the product of linear(More)
The effects of streptozotocin-induced (STZ) diabetes on the negative feedback regulation of LH and FSH were evaluated in adult female rats. Rats were injected with STZ (50 mg/kg) or vehicle and ovariectomized 10 days later. Estrogen (EB; 100 micrograms/kg) or oil injections were given on alternate days, starting on the day of ovariectomy. Blood samples for(More)
The influence of diabetes on the gonadotropin response to the negative feedback effect of testosterone (T) and hypothalamic neurotransmitter turnover rates in adult male rats was evaluated. Adult male Sprague-Dawley rats were made diabetic by an intraperitoneal injection of streptozotocin (STZ; 5 mg/100 g body weight) in citrate buffer. Vehicle-injected(More)
Streptozotocin-(STZ) treated diabetic male rats have significant reproductive endocrinopathy. To determine the functional responsiveness of luteinizing hormone-releasing hormone (LHRH) neurons in STZ-treated diabetic male rats, stimulated LHRH release was assessed using hypothalami from short-term STZ-treated, STZ-treated insulin-replaced, and control male(More)
The ability of insulin replacement to reverse the adverse effects of streptozocin-induced diabetes (STZ-D) on neuroendocrine and sexual function was tested in adult male rats. Rats were injected with STZ (50 mg/kg) or vehicle and then either started immediately on insulin (continuous) or allowed to remain untreated for 4 wk before insulin replacement was(More)
The effects of streptozotocin-induced (STZ) diabetes on the release of gonadotropins was studied in female rats. In the first experiment, rats were ovariectomized and 2 days later were injected with STZ. Three weeks later rats were treated with estrogen and progesterone and blood samples were taken via intraatrial cannulae for luteinizing hormone (LH)(More)
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