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排序方式: 共有647条查询结果,搜索用时 15 毫秒
641.
642.
S N Orlov I Iu Postnov N I Pokudin V Iu Kukharenko 《Biulleten' eksperimental'no? biologii i meditsiny》1988,106(9):286-289
The kinetics of proton efflux from erythrocytes with acidified cytoplasm (pHi 6.4) in a medium with pH 8.0 has been studied. The participation of the anion exchanger in this process was blocked by a stilbene disulfonic acid derivative. It was shown that the rate of Na+/H+ exchange (amiloride-inhibited component of proton efflux) is increased 2 fold. The addition of protein kinase C activator (1 microM of TPA) results in the increase of the rate of Na+/H+ exchange by 4 fold. 相似文献
643.
A B Tatariunas N Ia Orlov V N Karnaukhov 《Biulleten' eksperimental'no? biologii i meditsiny》1987,103(5):543-546
The paper describes the procedure of lipofuscin isolation from bovine myocardium with the use of 15-45% (weight/volume) linear gradient of sucrose density and differential centrifugation. Two coloured populations of lipofuscin granules with different density have been distinguished. Electron microscopic studies of the isolated lipofuscin have revealed the homogeneity of fractions and good maintenance of the granules. The electron microscopic, absorptive and luminescent spectral properties of lipofuscin preparations correspond to its properties in situ. The isolation of lipofuscin preparations suggests the possibility of studying the chemical composition and intramolecular structure of the granules. 相似文献
644.
V M Orlov V N Pustobaev S N Mikha?lov Ia M Varshavski? A S Ludzina 《Bioorganicheskaia khimiia》1984,10(4):528-535
The fragmentation pathways of N-1-alkoxyalkyl derivatives of 5-fluorouracil and various analogues of an antitumor drug ftorafur have been examined using a mass-spectrometry technique. The ionization and appearance energies for major ions of the compounds under study have been determined on the basis of the ionization efficiency curves obtained using photoionization mass-spectrometry. Different transport forms of 5-fluorouracil have been demonstrated to be similar in the stability of their pseudoglycosidic C-N bond. 相似文献
645.
646.
The authors studied the kinetics of the yield of protons from erythrocytes with preliminary acidified cytoplasma in the presence of the inhibitor of anionic transport. It was observed that in patients with occlusive venous thromboses the yield of H+ increased 4 times in comparison to the control group. 相似文献
647.
Promoting effect of protein component on the development of free radical oxidation in the systems ethylarahidonate--bovine serum albumin and mitochondria suspension under UV irradiation has been shown. Connection between the processes of peroxide formation and the change of the functional activity of organells has been followed. 相似文献