C Popp-Snijders

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According to the endocrine model of hereditary dizygotic twinning, high FSH is responsible for multiple ovulation and pregnancy. Our study explored the underlying neuroendocrine causes. In a prospective clinical study, we compared the third day of menses parameters of episodic secretion of LH and FSH, the pituitary response to LHRH, plasma estradiol, and(More)
Two uptake systems that control the extracellular concentrations of released monoamine neurotransmitters such as noradrenaline and adrenaline have been described. Uptake-1 is present at presynaptic nerve endings, whereas uptake-2 is extraneuronal and has been identified in myocardium and vascular and nonvascular smooth muscle cells. The gene encoding the(More)
Imminent ovarian failure (IOF) in women is characterized by regular menstrual cycles and elevated early follicular phase FSH. This study explored underlying neuroendocrine causes of elevated FSH concentrations on day 3 of the menstrual cycle. The characteristics of episodic secretion of FSH and LH, the pituitary response to gonadotrophin-releasing hormone(More)
We determined serotonin concentrations in platelet-poor plasma (PPP) from 11 preeclamptic pregnant women and 11 normal pregnant women by HPLC with electrochemical detection after a concentration step. Serotonin concentrations in PPP are very low in comparison with those in platelets, so it is very important to avoid in vitro release of serotonin from(More)
It has been proposed that increased polyol pathway activity resulting from hyperglycaemia induces neuropathy in diabetic patients. Recently, it has been demonstrated that erythrocyte sorbitol content is a reflection of polyol pathway activity in nerve. In the present study the relationship of erythrocyte sorbitol and glycosylated haemoglobin (HbA1) levels(More)
OBJECTIVE In order to determine if a serious disease like childhood acute lymphoblastic leukaemia (ALL) and the treatment necessary to cure the patients has long term effects on bone mass, we assessed bone mineral density (BMD) and several parameters involved in bone formation in a group of young adult survivors of ALL. DESIGN AND PATIENTS Fourteen male(More)
  • N Feller, K Hoekman, +5 authors H M Pinedo
  • 1997
We describe a patient with a metastasized adrenocortical cancer who exhibited excessive production of both glucocorticoids and mineralocorticoids combined with suppressed androgen production. Unusual steroid metabolites found in the patient's urine have not been described previously in association with this tumor type. Investigation of the multidrug(More)
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