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排序方式: 共有65条查询结果,搜索用时 12 毫秒
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I I Dedov V I Dedov N A Demina 《Biology bulletin of the Academy of Sciences of the USSR》1979,6(3):370-374
An electron-microscopic study was made of the suprachiasmatic and acurate nuclei of the hypothalamus, the intermediate and anterior lobes of the hypophysis in infertile female rats, sterilized by one injection of testosterone propionate in the critical period of their sexual development. Deformed synapses were detected on the bodies of the neurocytes of the suprachiasmatic nucleus, the accumulation of secretory granules and synaptoid vesicles in the nerve terminals of the intermediate lobe, and an intensive formation of secretion by the prolactin-producing adenocytes of the hypophysis. The mechanism of the masculinizing effect of androgens at the level of the hypothalamus and the possibility of correction of the anovulatory cycle in sterile females are discussed. 相似文献
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Endothelial dysfunction in the development of vascular complications in diabetes mellitus 总被引:7,自引:0,他引:7
Dedov II Shestakov MV Kochemasova TV Severina IS Baryshnikov AIu 《Rossi?skii fiziologicheski? zhurnal imeni I.M. Sechenova / Rossi?skaia akademiia nauk》2001,87(8):1073-1084
Patients with type 1 diabetes, aged 18 to 42 years, were compared to those aged 11 to 22 years. Activities of endothelial vasoactive factors and endothelial and leukocyte adhesion molecules were studied at different stages of development diabetes complications: nephropathy and retinopathy. The findings reveal role of the vasoactive factors in microangiopathy course. 相似文献
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Veselov D. S. Sabirzhanova I. Akhiyarova G. Veselova S. V. Farkhutdinov R. G. Mustafina A. R. Mitrichenko A. N. Dedov A. V. Veselov S. Yu. Kudoyarova G. R. 《Russian Journal of Plant Physiology》2002,49(4):513-517
The effects of nutrient-solution cooling and PEG addition to the nutrient solution on the phytohormone content, the rate of leaf growth, leaf extensibility under the influence of external mechanical action, osmotic potential, and transpiration were studied in seven-day-old wheat plants. Leaf growth rapidly ceased, and the transpiration rate was reduced in both treatments. Growth cessation induced by PEG was transient, and growth resumption was preceded by an increase in the leaf extensibility. The functional role of auxin accumulation in plant shoots in the control of extensibility as well as the relationship between the ABA accumulation and a decrease in the cytokinin content, on the one hand, and reduced transpiration, on the other hand, under stress conditions are discussed. 相似文献
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V I Dedov 《Radiobiologiia》1990,30(4):482-486
The results of karyometric and cytometric studies show that gamma-irradiation inhibits the growth and development of arcuate nucleus neurocytes of hypothalamus. The secretory function of neurocytes is also inhibited which is particularly important with regard to the formation of adenohypophysis functions as a major regulator of the adaptation response development. A radiation-induced disturbance of the latter aggravates the radiation injury to critical organs or systems of young animals thus influencing their viability. 相似文献
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Voron'ko OE Iakunina NIu Shestakova MV Zotova EV Chugunova EV Shamkhalova MSh Vikulova OK Debabov VG Dedov VG Nosikov VV 《Genetika》2005,41(6):844-849
Alleles and genotypes of polymorphic markers of paraoxonase 1 and paraoxonase 2 genes (PON1 and PON2) encoding enzymes of the body antioxidative defense were compared in type 1 diabetes mellitus patients with or without diabetic nephropathy. The patients with nonoverlapping ("polar") phenotypes constituted different groups. The first group contained patients with diabetic nephropathy (DN+, n = 62), clinical proteinuria (albuminuria above 300 mg per day), and at least 15-year disease duration. In control group, the patients had no diabetic nephropathy (DN-, n = 68), their albuminuria was below 200 mg per day, and disease duration was at least 20 years. Comparative analysis with exact Fisher's test revealed no significant differences in frequencies of alleles and genotypes of the PON1 gene polymorphic marker Gln192Arg and of PON2 gene polymorphic markers Ala148Gly and Cys311Ser. Our results suggest that the polymorphic markers studied are not associated with diabetic nephropathy among Russian patients in Moscow. 相似文献
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Lidia B Vysotskaya Tatyana N Arkhipova Leila N Timergalina Aleksandr V Dedov Stanislav Yu Veselov Guzel R Kudoyarova 《Plant Physiology and Biochemistry》2004,42(3):251-255
Removal of four out of five roots did not lower transpiration and stomatal conductivity of wheat (Triticum durum Desf.) seedlings. Water content of mature expanded leaf lamina remained constant at control levels. The results suggest that the only remaining root was capable to supply the shoot with water. This was evidenced by an increase in hydraulic conductivity of the root system following partial root excision measured at low subatmospheric pressures induced by vacuum. In the absence of a hydrostatic gradient, water flow from reduced root system was initially not higher than from an intact system, but increased subsequently. ABA content was increased in roots 1 h after partial root excision, which might contribute to the increase in hydraulic conductivity. 相似文献
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