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61.
Differential effect of retinoic acid on ADP and collagen induced platelet aggregation 总被引:3,自引:0,他引:3
G Mukherjee G C Chatterjee D Banerjee D K Bhattacharya 《Indian journal of experimental biology》1990,28(10):949-952
Retinoic acid (RA) was found to inhibit ADP induced but not collagen induced aggregation of human platelets and the differential action is related to intraplatelet Ca2+ reflux. RA was active at concentrations as low as 10(-7) M and required 20 min prior incubation with platelet suspension in order to inhibit aggregation by ADP. All the steps in ADP induced but not collagen induced platelet activation, viz. hydrolysis of phosphatidyl inositol, phosphorylation of 20, 47 and 250 kDa proteins as well as increased association of actin with Triton X-100 insoluble cytoskeletal matrix were inhibited by RA. RA when used as an agent for differentiation induction of cell progenitor is likely to affect the platelet aggregation and thereby the haemostatic process. 相似文献
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Seedlings of Vigna catjang Endl. were subjected to water stress for 6, S and 10 days by withholding water to investigate the activities of some oxidative enzymes and the pattern of senescence in leaves of 17-day-old seedlings undergoing water stress. Increasing duration of stress produced a proportional increase in the activities of IAA-oxidase, AA-oxidase, peroxidase and glycolate oxidase but decreased catalase activity and the contents of both chlorophyll and protein, hastening senescence. Leaf water potential and relative water content were also lowered with incresing duration of stress. Permeability was increased in leaf tissue undergoing water stress for 8 days. Seed treatment with CaCl2 (10−2 and 10−14 M ) for 6 h improved the water status of leaves, decreased tissue permeability, activities of oxidative enzymes, decline of chlorophyll and protein contents and delayed senescence compared to untreated water stressed plants. 相似文献
65.
Cystinotic and normal fibroblasts: Differential susceptibility to cysteine toxicity in vitro 总被引:2,自引:0,他引:2
Sheldon Orloff Anil B. Mukherjee Jean DeB Butler Barbara Foley Joseph D. Schulman 《In vitro cellular & developmental biology. Plant》1980,16(8):655-660
Summary Extracellular cysteine concentrations between 0.5 and 2.5 mM resulted in death of normal but not cystinotic cells grown in Eagle's minimal essential medium containing supplemental fetal
bovine serum and antibiotics. Differential cell survival was determined by viable cell counting using Trypan Blue dye exclusion.
In cocultivation experiments of [3H]thymidine-labelled cystinotic fibroblasts with nonradioactive normal fibroblasts, autoradiography confirmed the selective
survival of cystinotic cells in medium containing 1 mM cysteine. At this concentration of 1 mM cysteine, intracellular cystine content increased slightly in surviving normal cells but not in cystinotic cells, which normally
contain a high level of intracellular cystine. This comparative resistance of cystinotic fibroblasts to elevated extracellular
cysteine concentrations forms the basis for an in vitro selective system for these mutant human cells. Further exploration
of this resistance phenomenon may well expand the understanding of the molecular defect in cystinotic cells. 相似文献
66.
On a new charophyte from India 总被引:1,自引:1,他引:0
Chara indica is described as a new species on morphological and cytological grounds.Part of Ph. D. Thesis of Ranchi University. 相似文献
67.
Dehydroascorbic acid reduction in human erythrocytes 总被引:1,自引:0,他引:1
S Basu S Som S Deb D Mukherjee I B Chatterjee 《Biochemical and biophysical research communications》1979,90(4):1335-1340
68.
Asish K. Sen Amal K. Mukherjee Bhakti Guhathakurta Archana Dutta Dipti Sasmal 《Carbohydrate research》1979
On hydrolysis, the purified lipopolysaccharide (LPS) isolated from Vibrio cholera, Inaba 569 B, yielded glucose, mannose, a heptose behaving like d-glycero-l-manno-heptose and one behaving like d-glycero-l-gluco-heptose, 2-amino-2-deoxy-glucose, and glucuronic acid in the molar ratios of ~9:4:5:1:2:5. Studies on the LPS, the polysaccharide (PS), and carboxyl-reduced LPS showed that the PS has a branched structure, with (1→2)-linked mannopyranosyl and a heptopyranosyl, and (1→4)-linked glucopyranosyluronic and 2-amino-2-deoxyglucopyranosyl residues in the interior part of the molecule, and glucopyranosyl and heptopyranosyl residues as nonreducing end-groups. 相似文献
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Mechanical scarification of seeds ofPhaseolus mungo L. resulted in 100 per cent gormination in comparison to 90 per cent dormant control. Seeds treated with concentrated sulphuric acid for 8 min led to 85 per cent germination. Heat treatment at 70 °C for 24 h exhibited 75 per cent gormination, while boiled water treatment for 7 min caused 65 per cent germination. 相似文献