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921.
Study of the hormonal activity of the gonads of 97 males suffering from chronic alcoholism was undertaken to investigate the effects on hormonal secretion. An increased synthesis of androgens and estrogens was noted. The regularity of this increased with the duration of alcoholism. It is thought that the increased synthesis of sex hormones in chronic alcoholism is a defense adaptation directed to reducing the unfavorable effects of high concentration of alcohol in the blood. Alcoholism treatment involving teturam along with abstinence of alcohol caused a decrease in the functional activity of gonads, indicating the reversibility of this effect. The nature of functional alteration in the synthesis of sex hormones shows that it plays an essential role in the genesis of sexual impotence in alcoholism, through dyshormonal disruption of the endocrinal system. 相似文献
922.
923.
The classical concept concerning the character of development of the blastomatose process in the brain is frequently altered when applied to children and adolescents with supratentorial newgrowths. An analysis of 102 cases with verified newgrowths of a different histological nature and localization in the supratentorial space permitted to distinquish 4 types of a clinical development of this kind of pathology: (1) with an acute onset and short-term development of the tumor process; 2) with a gradual, progressive increase of symptoms, but with expressed and long-term remissions; 3) with a slowly progressive development of the disease and a sudden severe syndrome of decompensation or terminal state; 4) with acute clinical signs of a newgrowth and a replacement by a subsequent progressive remittent development. 相似文献
924.
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928.
Bacteriochlorophyll a reaction-center complex I from Chlorobium limicola f. thiosulfatophilum 6230 (Tassajara) was incubated in 2 M guanidine - HCl and then chromatographed on cross-linked dextran or agarose gel. Two principal components were separated: a larger component with photochemical activity (bacteriochlorophyll a reaction-center complex II) and a smaller component without activity (bacteriochlorophyll a protein). Complex II contains carotenoid, bacteriochlorophyll a, reaction center(s), and cytochromes b and c, but lacks the well characterized bacteriochlorophyll a protein contained in Complex I. Complex II carries out a light-induced reduction of cytochrome b along with an oxidation of cytochrome c. 相似文献
929.
930.
JR Mendell LM Silverman HL Verrill JM Parker WH Olson 《Canadian Metallurgical Quarterly》1976,26(10):968-974
The life expectancy of males in the United States is lower than that of males in most of the developed countries and in some of the not-so-developed ones. U.S. females, by contrast, do much better in international ranking. This study compares the mortality of U.S. white males with that of Swedish males who have had the highest reported male life expectancies in the world since the early 1960s. Life expectancy at birth in 1969-71 was 67.9 for U.S. white males compared with 71.9 for Swedish males. Greater U.S. white male mortality is found at all ages from birth through ages 75-79. At the upper ages there is a reversal of the differential with U.S. white males having lower mortality than their Swedish counterparts. The greatest relative differentials between the two male populations is found at ages under 1, ages 20-24, and ages 50-59. At ages under 1 the greater U.S. white male mortality is accounted for mainly by higher death rates from infectious diseases, at ages 20-24 by higher rates from the external causes of death (specifically accidents and homicide), and at ages 50-59 from most of the major organic causes of death. 相似文献