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The South African journal of medical sciences最新文献

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Neurochemistry of fever. 发热的神经化学。

The South African journal of medical sciences Pub Date : 1976-01-01

C Rosendorff

引用次数: 0

Chromosome analyses of two recently established human tumour cell lines derived from a carcinoma of the oesophagus and a primary liver tumour. 最近建立的两种人类肿瘤细胞系的染色体分析，这些细胞系来源于食道癌和原发性肝癌。

The South African journal of medical sciences Pub Date : 1976-01-01

K Robinson, E Bey, J J Alexander, J H Gear

引用次数: 0

Mechanisms of action of inhalational anaesthetics. 吸入麻醉的作用机制。

The South African journal of medical sciences Pub Date : 1976-01-01

H S Glauber

引用次数: 0

Vitamin B12 and its binding proteins in the serum of some wild game species. 某些野生动物血清中维生素B12及其结合蛋白的研究。

The South African journal of medical sciences Pub Date : 1975-01-01

R Green, M E Keep, N Colman, J Metz

引用次数: 0

Ventilatory response of healthy Nigerians and Europeans to carbon dioxide. 健康的尼日利亚人和欧洲人对二氧化碳的呼吸反应。

The South African journal of medical sciences Pub Date : 1975-01-01

D Femi-Pearse, A O Afonja, O O Elegbeleye, O Ogundipe

引用次数: 0

Stature and secular trend among Southern African Negroes and San (Bushmen). 南部非洲黑人和布须曼人的身材和世俗倾向。

The South African journal of medical sciences Pub Date : 1975-01-01

P V Tobias

{"title":"Stature and secular trend among Southern African Negroes and San (Bushmen).","authors":"P V Tobias","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Despite a wide belief that little information is available on the dimensions of Southern African peoples, data for adult mean stature are presented for no fewer than 123 samples of S.A. Negro (93) and Khoisanoid (30) peoples. Many are published here for the first time. These have made possible a search for signs of the secular trend towards increased adult stature. Two main techniques are the study of longitudinal data (where time-spaced studies on the same population are available) and of age-ranked, cross-sectional data (where the lack of declining stature with age connotes the absence of a secular trens). Most Southern African populations for which data are available show either the absence of the secular trend (previously recognized) or a frankly reversed secular trend (a new concept), in which adults show a decline in mean stature compared with earlier generations. Similar absence or reversal of the secular trend characterizes peoples in Malawi, Kenya, Uganda, Sudan, Senegal, Upper Volta and Ivory Coast, as well as some Asian and South American samples. In the main, developed areas show the secular trend, while less developed areas show an absence or reversal of the trend. To this generalization, the San are a striking exception. All the evidence, first adduced in 1962, points to the usual secular trend as occurring in the San, despite their lowly, undeveloped economic status. Although the data are imperfect, it is possible too, that Xhosa and Moçambique Maravi show evidence of a positive secular trend. \"The adult form of mankind is the outcome of growth enhanced, dwarfed, warped, or mutilated by the adventures of life. I am not decrying heredity. But I do insist that new knowledge gained for anthropology through the study of growth brings hope and confidence where formerly was only the grim figure of destiny.\" (T. Wingate Todd, 1935).</p>","PeriodicalId":22995,"journal":{"name":"The South African journal of medical sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12385682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An investigation into the hepatic cytochrome P-450 catalysed metabolism of the anaesthetic fluroxene (2,2,2-trifluoroethyl vinyl ether). 肝细胞色素P-450催化麻醉氟酮(2,2,2-三氟乙基乙烯醚)代谢的研究。

The South African journal of medical sciences Pub Date : 1975-01-01

J A Marsh, K M Ivanetich, J J Bradshaw, G G Harrison, B L Webber, L S Kaminsky

引用次数: 0

Histochemically demonstrable changes in amylase activity in submaxillary salivary glands of puberal male mice following castration. 去势后，发情期雄性小鼠上颌下唾液腺淀粉酶活性的组织化学变化。

The South African journal of medical sciences Pub Date : 1975-01-01

M Shear, F Barbakow, G King

{"title":"Histochemically demonstrable changes in amylase activity in submaxillary salivary glands of puberal male mice following castration.","authors":"M Shear, F Barbakow, G King","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The sexual dimorphism in mouse submaxillary glands is well documented. The main difference is seen in the granular convoluted tubules (G.C.T.) which in the adult male are large and in the adult female are small and fewer. Previous studies have shown that amylase is localized histochemically to these G.C.T.'s; that following castration there is a histological reduction in size and number of the G.C.T.'s and a roughly 50 per cent decrease in amylase activity demonstrable biochemically. In the present study 74 male mice aged 60 days were divided in six groups. The animals were fasted overnight. Under general anaesthesia, the submaxillary glands on the left side were removed and frozen in liquid nitrogen for subsequent histochemistry. The animals were then castrated and returned to their cages. At periods of 2, 4, 6, 8, 10 and 12 weeks later, the other submaxillary gland was removed under the same conditions, and the animals were then killed. Fresh frozen cryostat sections of both glands were subjected to the starch substrate film technique for the histochemical demonstration of amylase. Adjacent sections were stained with HE. The 2-week animals showed a slight but define reduction in size and number of G.C.T.'s and a parallel reduction in amylase activity. This was more pronounced by 4 and 6 weeks. In the 4-week animals, however, the changes were not consistent, being more pronounced in some animals than in others. This same phenomenon was observed in the 6-, 8- and 10-week animals, in some of whom there was considerable G.C.T. atrophy in the submaxillaries and in others very much less. In many of the 12-week animals there was very little evidence of G.C.T. atrophy. These findings confirmed other studies which suggested that there may be some regeneration of G.C.T's, possibly as a result of influence of other endocrine glands such as thyroid, adrenal and pituitary.</p>","PeriodicalId":22995,"journal":{"name":"The South African journal of medical sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12385681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Editorial: The ethos and the dilemma of a medical journal. 社论:医学期刊的精神与困境。

The South African journal of medical sciences Pub Date : 1975-01-01

引用次数: 0

Ascorbate status of patients with porphyria cutanea tarda symptomatica and its effect on porphyrin metabolism. 迟发性皮肤卟啉症患者抗坏血酸状况及其对卟啉代谢的影响。

The South African journal of medical sciences Pub Date : 1975-01-01

V A Percy, D Naidoo, S M Joubert, R J Pegoraro

{"title":"Ascorbate status of patients with porphyria cutanea tarda symptomatica and its effect on porphyrin metabolism.","authors":"V A Percy, D Naidoo, S M Joubert, R J Pegoraro","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The ascorbate status and the effect of loading doses of ascorbic acid (1,5 g per day by mouth for 7 days) on the porphyric process were studied in 7 black men with porphyria cutanea tarda symptomatica. It was found that the ascorbate stores were depleted in these patients as judged by serum and leucocyte ascorbate levels. Temporary repletion of the ascorbate stores was effected by the loading doses of ascorbic acid: Serum iron concentrations increased in 6 patients; urinary iron excretion showed small peaks a few days after ascorbic acid therapy commenced; haemoglobin concentration was not affected; excessive amounts of oxalate were excreted in the urine; neither total urinary porphyrin excretion nor the composition of the urinary porphyrins was affected in a way which could be related to ascorbate therapy. Further evidence that ascorbate depletion is not important in the induction of porphyria was found when the ascorbate status of siderotic rats, rendered porphyric by hexachlorobenzene-feeding, was examined. Stores of ascorbate and the oxidative catabolism of ascorbate were not different in the prophyric rats as compared with normal litter mates.</p>","PeriodicalId":22995,"journal":{"name":"The South African journal of medical sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1975-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12385686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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