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The purpose of this study was to learn to what extent carotid collateral circulation is efficient in maintaining cephalic blood flow in the sheep fetus. Under halothane anaesthesia six fetal sheep at 124–135 days of gestation were instrumented with inflatable occluders around both common carotid arteries, an inductive flow probe around one external carotid artery, and arterial catheters to measure...
The influence of oxytocin (OXY), sulproston (SUL) and acetylsalicylic acid (ASA) on L-alanine- (ALA), D-glucose- (GLU) or water- (H 2 O) uptake (maternal side) in the isolated perfused guinea pig placenta was investigated. Uptake was measured with a single injection, paired tracer dilution method. ‘T50’ values were derived from venous concentration curves (extracellular marker) as the distance...
We investigated the specific uptake (reference: [H 3 ]-l-glucose) as a measure of membrane transfer of [C 14 ]-labeled l-ascorbic acid (AA), l-dehydroascorbic acid (DHA) and diketogulonic acid using the single injection, double tracer dilution method in the artificially perfused lobe of the near-term human placenta. The uptake of DHA (40-60%) on both the fetal and the maternal...
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