Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: EC:1.6.5.2 (NQO1)
 6,196 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The histochemical, enzyme-histochemical and ultrastructural characteristics of the adipocyte precursors in human embryos at 6-12 weeks of gestation were studied. Some consequent stages in the histogenesis and differentiation of the fat cells were maintained according to: 1/number and size of the lipid droplets; 2/position of the nucleus. The cells become rounder, accumulate lipid inclusions, acquire eccentric nucleus, gradually gather in clusters. No typical unilocular adipocytes were seen at this stage of fetal development. The enzyme-histochemistry disclosed that the reactions for glucose-6P-dehydrogenase, NADH2 diaphorase and especially lipoprotein lipase were highly expressed. Ultrastructurally the adipocyte precursors were with a great amount of organelles/mitochondria of typical sight, well developed rough and smooth endoplasmatic reticulum/, lipid droplets and glycogen which express their high functional activity. This study could provide criteria for understanding the processes of lipidogenesis and differentiation.
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PMID:Histochemical and ultrastructural criteria for early differentiation of human subcutaneous adipocytes. 1020 88

EDS alkylating agent has been shown to selectively and temporarily kill LCs in adult rats. The first newly formed single LCs appeared at 14th day post ESD and showed detectable activity for 3beta-HSD and NADH2-diaphorase, which became progressively stronger with time after treatment The ultrastructural study revealed that the progenitor LCs differentiated into immature LCs within a week, and two weeks later they were transformed into mature LCs. Therefore, the restoration of new LC population after EDS treatment repeated the dynamics of normal LC development within a similar time range. The dynamics of enzyme activity correlated with structural differentiation of the new LC population.
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PMID:Steroidogenic and structural differentiation of new Leydig cell population following exposure of adult rats to ethane dimethanesulphonate. 1244 69


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