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1.
Cold acclimatization induces morphological and compositional modifications of rat epididymal adipose tissue: a decrease in fat cell size, an increase of fat cell number per g of tissue, but no significant increase in total fat cell number in the tissue; finally, an increase in protein content and a decrease in triglyceride content. 相似文献
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Gisèle Cherqui Monique Cadot C. Senault R. Portet 《Cellular and molecular life sciences : CMLS》1979,35(10):1353-1354
Summary Cold acclimatization induces morphological and compositional modifications of rat epididymal adipose tissue: a decrease in fat cell size, an increase of fat cell number per g of tissue, but no significant increase in total fat cell number in the tissue; finally, an increase in protein content and a decrease in triglyceride content.Acknowledgments. We especially thank Mr M. Joliff for his very valuable help for fat cell size determination (Hospital Bichat, Paris). 相似文献
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Cell and organotypical cultures are used to study the direct effect of serotonin and of ketanserin, a serotonin antagonist, on dermal and epidermal cells of embryonic chick skin. Ketanserin stimulates the increase in cell number and inhibits the differentiation, whereas serotonin stimulates differentiation and inhibits the increase in cell number. 相似文献
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Summary Cell and organotypical cultures are used to study the direct effect of serotonin and of ketanserin, a serotonin antagonist, on dermal and epidermal cells of embryonic chick skin. Ketanserin stimulates the increase in cell number and inhibits the differentiation, whereas serotonin stimulates differentiation and inhibits the increase in cell number. 相似文献
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J Dry F Leynadier N Abuaf H Luce 《Comptes rendus des séances de l'Académie des sciences. Série D, Sciences naturelles》1978,286(21):1543-1545
After a 10 day treatment with total adreno-cortical extract, administered to 11 subjects, the following results were obtained: increase of delayed cutaneous responses to various antigens, increase in the number of null lymphocytes, decrease in the number of B lymphocytes. These changes did not occur in 16 control patients who were not treated. 相似文献
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Mitotic activity of adrenal medullary cells in the mouse at different ages and following unilateral adrenalectomy. 总被引:1,自引:0,他引:1
A Benedetti 《Experientia》1976,32(1):108-109
The number of mitoses as well as the number of the cells of the adrenal medulla was determined in the mouse at various ages and after unilateral adrenalectomy. It was found that a decrease in the mitoses and an increase in the cell number occurs up to 4 months. In 12-month-old rats, mitoses, although rare, are still present. No changes in the mitosis and cell number was observed after unilateral adrenalectomy. 相似文献
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A. Benedetti 《Cellular and molecular life sciences : CMLS》1976,32(1):108-109
Summary The number of mitoses as well as the number of the cells of the adrenal medulla was determined in the mouse at various ages and after unilateral adrenalectomy. It was found that a decrease in the mitoses and an increase in the cell number occurs up to 4 months. In 12-month-old rats, mitoses, although rare, are still present. No changes in the mitosis and cell number was observed after unilateral adrenalectomy. 相似文献
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D. Lemonnier 《Cellular and molecular life sciences : CMLS》1970,26(9):974-975
Summary Swiss mice became obese after administration of two 41% fat diets given, throughout life, ad libitum. The parametrial fat weights show a 6-fold increase in obese mice. The differences were accounted for in part by the adipose cell size enlargement and particularly by a 2,5-fold increase in their number. 相似文献
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Epidermal growth factor stimulated both [3H]thymidine uptake and proliferation of rat AH66 hepatoma cells. However, the increase in cell number was not accompanied by a proportional increase in the levels of alpha-fetoprotein of the culture media. The effects of EGF on the cell proliferation were antagonized by N6,O2'-dibutyryl cAMP. 相似文献
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A. J. Stere N. W. Brister A. Anthony 《Cellular and molecular life sciences : CMLS》1980,36(7):842-843
Summary Rats exposed to hypobaric hypoxia for 24 h showed a significant increase in the number of perfused capillaries and in the number of radioactive microspheres trapped in the coronary circulation. 相似文献
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J P Friend 《Experientia》1979,35(12):1577-1578
Pituitary cells increase their numbers more than 3-fold during the 1st 10 days of life while maintaining the same cell size ratios. In the 25-day-old animal, the rate of cell division slows and there is a slight increase in the number of large cells. An increase in adult weight is attributed to hyperplasia and a shift to a population of larger cells. 相似文献
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Reactive hyperemia was induced in hindlimbs of rats by occlusion of the femoral artery. Using fluorescein dye as a peripheral vascular marker, we observed that there was an increase in the number of flowing capillaries supplying the muscle fibres following release of the occlusion. The results indicate that the number of flowing capillaries is not dependent on the duration of occlusion (2-10 min). 相似文献
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Summary Testosterone, which was injected s.c. into adult male rats castrated 15 h prior to the injection, decreased the number of androgen-specific binding sites in the cytosol at 30 min. Coincidentally, a substantial increase was observed in the nucleus. The decreased number of the sites in the cytosol was restored to the initial level at 60 min; on the contrary, a decrease was observed in the nucleus. 相似文献
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Summary Hemigonadectomy in 9-day-old female rats results in a drastic increase in the weight and the number of HCG-binding sites of the remaining ovary during further development. However, on a per mg basis of ovarian weight, the number of HCG-receptors is identical in hemicastrated and control rats. 相似文献
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Summary Reactive hyperemia was induced in hindlimbs of rats by occlusion of the femoral artery. Using fluorescein dye as a peripheral vascular marker, we observed that there was an increase in the number of flowing capillaries supplying the muscle fibres following release of the occlusion. The results indicate that the number of flowing capillaries is not dependent on the duration of occlusion (2–10 min). 相似文献
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Cell size and cell division of the anterior pituitary: Time course in the growing rat 总被引:1,自引:0,他引:1
J. P. Friend 《Cellular and molecular life sciences : CMLS》1979,35(12):1577-1578
Summary Pituitary cells increase their numbers more than 3-fold during the 1st 10 days of life while maintaining the same cell size ratios. In the 25-day-old animal, the rate of cell division slows and there is a slight increase in the number of larger cells. An increase in adult weight is attributed to hyperplasia and a shift to a population of larger cells.Supported by NIH grant HD08844. 相似文献
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The histamine-laden mast cells of gastric mucosa in albino rats are shown to degranulate on administration of Betamethasone, but they increase in number in adrenalectomized rats. It is concluded that Betamethasone, and also adrenal glucocorticoids increase gastric secretion by liberating histamine from mast cells and histamine in turn acts on the gastric glands. 相似文献
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Summary The influence of inhibition or stimulation of cellular DNA synthesis on tick-borne virus antigen production in persistently infected cell culture was studied. Either mitomycin C or cytosine-arabinoside caused cessation of antigen-containing cell number increase. Stimulation of cellular DNA synthesis by growth medium change increased the level of antigen-containing cells. When HEp-2-Sof culture was synchronized, a correlation was observed between the entrance of cells into DNA synthesis phase and the increase of proportion of antigen-containing cells. 相似文献
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Surface morphological study of ehrlich ascites tumor cells exposed to microware irradiation and heat
E. C. Chew D. J. Riches T. K. Lam H. L. Hou-Chan 《Cellular and molecular life sciences : CMLS》1984,40(8):881-884
Summary Microwave irradiation of EAT cells caused an increase in length and number of surface microvilli. The tumor cells tend to form large aggregates by means of extensive interdigitation of surface microvilli. On the other hand, heat hyperthermia caused a decrease of surface microvilli but an increase of surface blebs. Hence the surface morphology of EAT cells after in vitro exposure to microwave irradiation differs markedly from that after heat hyperthermia.Part of the results was presented a the Fifth meeting of the European Co-operative Hyperthermia Group, Essen, July 1983. 相似文献