{"title":"STUDIES ON THERMOGENESIS IN COLD-ACCLIMATED BIRDS.","authors":"R. Chaffee, W. W. Mayhew, M. Drebin, Y. Cassuto","doi":"10.1139/Y63-250","DOIUrl":"https://doi.org/10.1139/Y63-250","url":null,"abstract":"Effects on oxygen consumption of continuous intravenous injection of various doses of L-noradrenaline were measured in anesthetized chickens acclimated to 1 °C for 3 months, and in controls. No effects were produced in either and it is concluded that noradrenaline is not a calorigenic mediator in cold-acclimated chickens. Liver succinoxidase and liver microsomal pyridine nucleotide-cytochrome c reductases of cold-acclimated and control sparrows were assayed, and there were no cold-induced differences. Since small cold-acclimated mammals show elevation of these liver enzyme systems, the findings indicate that the chemical basis of non-shivering thermogenesis (if this phenomenon is present at all) may involve different mechanisms in birds and mammals. Organ weights were measured, and it was found that in the sparrow, as in small rodents, the kidney and heart become enlarged in response to cold, perhaps indicating a convergent adaptation in these two diverse homoeotherms. Changes in the thickness and changes...","PeriodicalId":9531,"journal":{"name":"Canadian journal of biochemistry and physiology","volume":"29 1","pages":"2215-20"},"PeriodicalIF":0.0,"publicationDate":"1963-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85116563","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}
{"title":"INHIBITORY EFFECTS OF DECARBOXYLASE INHIBITORS ON THE METABOLISM OF TYROSINE-C14 IN THE RAT.","authors":"J. F. Moran, T. Sourkes, B. Chavez","doi":"10.1139/Y63-267","DOIUrl":"https://doi.org/10.1139/Y63-267","url":null,"abstract":"","PeriodicalId":9531,"journal":{"name":"Canadian journal of biochemistry and physiology","volume":"19 1","pages":"2376-9"},"PeriodicalIF":0.0,"publicationDate":"1963-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76698441","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}
{"title":"STUDIES ON THERMOGENESIS IN COLD-ACCLIMATED BIRDS.","authors":"R R CHAFFEE, W W MAYHEW, M DREBIN, Y CASSUTO","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":9531,"journal":{"name":"Canadian journal of biochemistry and physiology","volume":"41 ","pages":"2215-20"},"PeriodicalIF":0.0,"publicationDate":"1963-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"23672563","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}
{"title":"CONVERSION OF DISACCHARIDES TO THE CORRESPONDING GLYCOSIDE-3-ULOSES BY INTACT CELLS OF AGROBACTERIUM TUMEFACIENS.","authors":"S. Fukui, R. Hochster","doi":"10.1139/O63-265","DOIUrl":"https://doi.org/10.1139/O63-265","url":null,"abstract":"The conversion of trehalose, maltose, and lactose to their corresponding glycoside-3-uloses was demonstrated with growing, intact cells of Agrobacterium tumefaciens. Moreover, 3-ketotrehalose, 3-ke...","PeriodicalId":9531,"journal":{"name":"Canadian journal of biochemistry and physiology","volume":"19 1","pages":"2363-71"},"PeriodicalIF":0.0,"publicationDate":"1963-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84859453","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}
{"title":"THE GLYCOSAMINOGLYCAN OF THE 'GROUND SUBSTANCE' OF RAT SKIN.","authors":"J M MATHIESON, R H PEARCE","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":9531,"journal":{"name":"Canadian journal of biochemistry and physiology","volume":"41 ","pages":"2327-35"},"PeriodicalIF":0.0,"publicationDate":"1963-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"23672572","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}
{"title":"INFLUENCE OF DIET COMPOSITION AND CALORIC INTAKE ON BODY WEIGHT OF WARM- AND COLD-ACCLIMATED RATS.","authors":"A. Desmarais, P. Lachance","doi":"10.1139/O63-252","DOIUrl":"https://doi.org/10.1139/O63-252","url":null,"abstract":"The well known reduction in growth rate of cold-acclimated rats has been shown to depend on a decreased gain in total body fat, without change in the gain in lean body weight. This has been observed in rats fed Lab Chow or a high-fat diet ad libitum. In those groups fed a high-carbohydrate diet ad libitum or calorie-restricted high-fat or high-carbohydrate diets, exposure to cold had no effect on the gain in neither total body weight nor lean body weight, which were already reduced by the diet; in those animals, the significant decrease in the gain in total body fat upon exposure to cold was compensated by a slight but unsignificant increase in the gain in lean body weight, so that differences in gain in total body weight were not significant.","PeriodicalId":9531,"journal":{"name":"Canadian journal of biochemistry and physiology","volume":"35 1","pages":"2225-35"},"PeriodicalIF":0.0,"publicationDate":"1963-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82020002","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}
{"title":"SIMULTANEOUS DETERMINATION OF KREBS CYCLE ACIDS BY GAS-LIQUID CHROMATOGRAPHY.","authors":"A. Kuksis, P. Vishwakarma","doi":"10.1139/O63-264","DOIUrl":"https://doi.org/10.1139/O63-264","url":null,"abstract":"Carbowax-coated Teflon powder (2–3%, w/w, on Teflon 6, 90–100 mesh) columns (5 ft long, 1/8 in. diam.) were used with the Aerograph Hy-Fi gas chromatograph. Complete separations and symmetric peaks were obtained both isothermally (150 °C) and by temperature programming (100–160 °C) for the methyl esters of succinic, oxalacetic, malic, alpha-ketoglutaric, trans- and cis-aconitic, and citric acids. On account of enolization, the alpha-keto esters gave more than one peak, the proportions of which varied with the chromatographic conditions. The succinic and fumaric esters overlapped. The trans isomers were eluted ahead of the cis isomers.A linear relationship was obtained between the areas recorded and the quantities of the individual esters injected in the range of 0.01–10 μg. The absolute response varied with the oxygen content of each ester. Analysis of polycarboxylic acid mixtures from natural sources gave values comparable to those obtained by the more laborious conventional techniques.","PeriodicalId":9531,"journal":{"name":"Canadian journal of biochemistry and physiology","volume":"1 1","pages":"2353-62"},"PeriodicalIF":0.0,"publicationDate":"1963-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85730672","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}
{"title":"CHARACTERISTICS OF ERYTHROCYTES OF DIFFERENT AGES. II. ENZYME ACTIVITY AND OSMOTIC FRAGILITY.","authors":"M. Sass, L. Levy, H. Walter","doi":"10.1139/O63-258","DOIUrl":"https://doi.org/10.1139/O63-258","url":null,"abstract":"The activity of glutamic oxaloacetic transaminase, lactic acid dehydrogenase, and catalase in red cells of different ages has been studied with a serial osmotic fragility technique. Two populations of young cells, one fragile and one resistant, have been differentiated and shown to contain increased levels of glutamic oxaloacetic transaminase and average (normal) levels of catalase. Lactic acid dehydrogenase levels were shown to be increased only in the fragile population of young cells. These findings were confirmed with similar studies on abnormal red cell populations containing increased numbers of young red cells and reticulocytes. Although their identity has not been established, the results suggest that the fragile and resistant young red cell populations are composed mainly of reticulocytes and fully matured young cells, respectively.","PeriodicalId":9531,"journal":{"name":"Canadian journal of biochemistry and physiology","volume":"12 1","pages":"2287-96"},"PeriodicalIF":0.0,"publicationDate":"1963-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86578303","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}
{"title":"PHOSPHORUS METABOLISM IN COLD-EXPOSED RATS.","authors":"J R BEATON","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":9531,"journal":{"name":"Canadian journal of biochemistry and physiology","volume":"41 ","pages":"2209-14"},"PeriodicalIF":0.0,"publicationDate":"1963-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"23672562","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}
{"title":"THE GLYCOSAMINOGLYCAN OF THE 'GROUND SUBSTANCE' OF RAT SKIN.","authors":"J. M. Mathieson, R. H. Pearce","doi":"10.1139/O63-261","DOIUrl":"https://doi.org/10.1139/O63-261","url":null,"abstract":"The glycosaminoglycan was isolated from an isotonic saline extract of dry, fat-free rat skin in better than 80% yield. The product was virtually homogeneous as judged by electrophoresis on paper at several pH values, by electrophoresis on sponge rubber, and by fractional precipitation of the calcium and sodium salts with ethanol. The material corresponded to hyaluronate in electrophoretic mobility, solubility of its salts in ethanol, and in its content of a single hexosamine, glucosamine.","PeriodicalId":9531,"journal":{"name":"Canadian journal of biochemistry and physiology","volume":"109 1","pages":"2327-35"},"PeriodicalIF":0.0,"publicationDate":"1963-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74859686","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}