Henry M. Weinfeld

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The release of labeled acetylcholine from synaptosomes loaded with methyl-[3H]choline has been measured in Krebs-Ringer-Bicarbonate (KRB) media containing either 5.6 or 56 mM KCl. Experiments have been performed in media containing either 1.0 mM Ca or 0 Ca with 1 mM EGTA. Phenytoin, 2 X 10(-4) M, reduced the depolarization-dependent release of acetylcholine(More)
Gangliosides are glycolipids which contain sialic acid and are found in the membranes of mammalian cells. By analogy with recent studies of other cells, it is possible that gangliosides play a role in the membrane functions and in vivo survival of platelets. In order to determine if ganglioside destruction plays a role in the storage-induced loss of(More)
We have conducted a quantitative analysis of the gangliosides extracted from brain, spleen, thymus, and liver tissue of 8-week-old male mice from H-2 congenic mouse strains on the B10 background, using high performance thin-layer chromatography (HPTLC). An analysis of variance of replicate samples of liver from strains B10, B10.A, and B10.G revealed that(More)
In order to assess the importance of glycosphingolipids (GSL) in the immunology of the platelet, serum antibody binding to immobilized, purified platelet GSLs have been quantitatively measured via high-performance thin-layer chromatography (HPTLC), 125I-radio-immunolabeling, autoradiography, and densitometry. Thirteen neutral GSL bands were detected at(More)
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