Comparative biochemistry and physiology最新文献

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Effects of formalin on gas exchange in the gills of carp Cyprinus carpio 福尔马林对鲤鱼鳃内气体交换的影响
Comparative biochemistry and physiology Pub Date : 1991-01-01 DOI: 10.1016/0742-8413(91)90234-K
Ken‐ichi Yamamoto
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引用次数: 11
Cumulative index-volumes 21–30 累计索引-卷21-30
Comparative biochemistry and physiology Pub Date : 1974-01-01 DOI: 10.1016/0010-406X(74)90001-2
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引用次数: 0
Cumulative index-volumes 21–30 累计索引-卷21-30
Comparative biochemistry and physiology Pub Date : 1974-01-01 DOI: 10.1016/0010-406X(74)90001-2
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引用次数: 0
Comparison of subnormal multiple doses of l-thyroxine and l-triiodothyronine in propylthiouracil-fed and radiothyroidectomized chicks (Gallus domesticus) 丙硫尿嘧啶喂养与放射性甲状腺切除雏鸡中l-甲状腺素和l-三碘甲状腺原氨酸亚正常多剂量的比较
Comparative biochemistry and physiology Pub Date : 1970-12-15 DOI: 10.1016/0010-406X(70)90100-3
Krishan Lal Raheja, James G Snedecor
{"title":"Comparison of subnormal multiple doses of l-thyroxine and l-triiodothyronine in propylthiouracil-fed and radiothyroidectomized chicks (Gallus domesticus)","authors":"Krishan Lal Raheja,&nbsp;James G Snedecor","doi":"10.1016/0010-406X(70)90100-3","DOIUrl":"10.1016/0010-406X(70)90100-3","url":null,"abstract":"<div><p></p><ul><li><span>1.</span><span><p>1. The physiological potencies of <span>l</span>-thyroxine (<span>l</span>-T<sub>4</sub>) and <span>l</span>-triiodothyroxine (<span>l</span>-T<sub>3</sub>) are equal in propylthiouracil (PTU)-fed radiothyroidectomized (RT̄) chicks.</p></span></li><li><span>2.</span><span><p>2. Propylthiouracil does not seem to interfere in the peripheral activity of T<sub>4</sub> or T<sub>3</sub> in the chick.</p></span></li><li><span>3.</span><span><p>3. Liver hypertrophy and liver glycogen accumulation are distinct criteria of hypothyroidism in the chick and are restored to near normal levels by small daily doses of T<sub>4</sub> or T<sub>3</sub>.</p></span></li><li><span>4.</span><span><p>4. The thyroid enlargement subsequent to the feeding of PTU is further increase by the administration of multiple subnormal doses of T<sub>4</sub> or T<sub>3</sub>.</p></span></li><li><span>5.</span><span><p>5. The poor growth rate of PTU-fed and RT̄ chicks compared to control chicks is due to decreased food intake. The apparent digestibility of protein, fat, and energy, as well as the efficiecy of food utilization are affected equally by T<sub>4</sub> or T<sub>3</sub> in PTU-fed or radiothyroidectomized chicks.</p></span></li></ul></div>","PeriodicalId":78189,"journal":{"name":"Comparative biochemistry and physiology","volume":"37 4","pages":"Pages 555-563"},"PeriodicalIF":0.0,"publicationDate":"1970-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0010-406X(70)90100-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74018330","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: 36
Protein nitrogen, amino acid and carbohydrate gradients in the rat intestine 大鼠肠道中蛋白质、氮、氨基酸和碳水化合物的梯度
Comparative biochemistry and physiology Pub Date : 1970-12-15 DOI: 10.1016/0010-406X(70)90098-8
D.F Mettrick
{"title":"Protein nitrogen, amino acid and carbohydrate gradients in the rat intestine","authors":"D.F Mettrick","doi":"10.1016/0010-406X(70)90098-8","DOIUrl":"10.1016/0010-406X(70)90098-8","url":null,"abstract":"<div><p></p><ul><li><span>1.</span><span><p>1. The nitrogen, amino acid and carbohydrate content of the different regions of the gastro-intestinal tract differ significantly depending on source of dietary protein.</p></span></li><li><span>2.</span><span><p>2. There are significant differences in the molar ratios of the intestinal amino acid pool up to 4 hr after feeding.</p></span></li><li><span>3.</span><span><p>3. The molar ratios and concentrations of individual amino acids depend on the dietary protein source, the region of the intestine and time after feeding.</p></span></li><li><span>4.</span><span><p>4. Endogenous nitrogen recruitment is insufficient to maintain homeostasis in the entire intestine.</p></span></li></ul></div>","PeriodicalId":78189,"journal":{"name":"Comparative biochemistry and physiology","volume":"37 4","pages":"Pages 517-541"},"PeriodicalIF":0.0,"publicationDate":"1970-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0010-406X(70)90098-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81877742","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: 21
Effect of calcium ions on oxygen equilibrium of hemocyanin of asiatic horseshoe crab Tachypleus tridentatus 钙离子对亚洲马蹄蟹血青素氧平衡的影响
Comparative biochemistry and physiology Pub Date : 1970-12-15 DOI: 10.1016/0010-406X(70)90102-7
Joseph C Hwang , C.P Fung
{"title":"Effect of calcium ions on oxygen equilibrium of hemocyanin of asiatic horseshoe crab Tachypleus tridentatus","authors":"Joseph C Hwang ,&nbsp;C.P Fung","doi":"10.1016/0010-406X(70)90102-7","DOIUrl":"10.1016/0010-406X(70)90102-7","url":null,"abstract":"<div><p></p><ul><li><span>1.</span><span><p>1. The oxygen affinity of the horseshoe crab (<em>Tachypleus tridentatus</em>) hemocyanin is greatly reduced by removing calcium ions either by dialysis against Tris buffer or by addition of EDTA. This effect is largely reversed by the addition of CaCl<sub>2</sub>.</p></span></li><li><span>2.</span><span><p>2. The logarithmic plot of P<sub>50</sub> against calcium ion concentration is a linear function.</p></span></li><li><span>3.</span><span><p>3. At low concentrations of calcium ion, the oxygen affinity of hemocyanin varies with changes in the concentration of free calcium ions and also the degree of oxygenation.</p></span></li><li><span>4.</span><span><p>4. At concentrations of calcium ion above 20 mM, it depends only on the concentration of free calcium ions.</p></span></li><li><span>5.</span><span><p>5. Succinylated hemocyanin has a different absorption spectrum with maximal absorption peaks at 390 mμ. It is incapable of binding reversibly with oxygen.</p></span></li></ul></div>","PeriodicalId":78189,"journal":{"name":"Comparative biochemistry and physiology","volume":"37 4","pages":"Pages 573-579"},"PeriodicalIF":0.0,"publicationDate":"1970-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0010-406X(70)90102-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83233018","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: 13
Enterochromaffin properties of granular cells in the heart of the snails Helix aspersa and Strophocheilus oblongus 蜗牛心脏颗粒细胞肠染色质特性的研究
Comparative biochemistry and physiology Pub Date : 1970-12-15 DOI: 10.1016/0010-406X(70)90094-0
Cecilia Volkmer-Ribeiro
{"title":"Enterochromaffin properties of granular cells in the heart of the snails Helix aspersa and Strophocheilus oblongus","authors":"Cecilia Volkmer-Ribeiro","doi":"10.1016/0010-406X(70)90094-0","DOIUrl":"10.1016/0010-406X(70)90094-0","url":null,"abstract":"<div><p></p><ul><li><span>1.</span><span><p>1. Specific granular cells were found in the heart, mantle and subesophageal ganglia of the snails <em>Helix aspersa</em> and <em>Strophocheilus oblongus</em>.</p></span></li><li><span>2.</span><span><p>2. Histochemical methods for the demonstration of enterochromaffin granules gave positive results in these cells.</p></span></li><li><span>3.</span><span><p>3. Differential osmium reduction by nerves in these hearts showed two kinds of fibres: osmiophilic and non-osmiophilic nerves and gives histological evidence of a double innervation (inhibitory and stimulatory fibres) to the snail heart.</p></span></li><li><span>4.</span><span><p>4. Osmiophilic endings are reported in the ventricle and auricle and are shown to end very close to the granular cells.</p></span></li><li><span>5.</span><span><p>5. No neurosecretory-staining material could be traced along nerves in these hearts.</p></span></li><li><span>6.</span><span><p>6. One large bipolar neuron is described in these hearts.</p></span></li><li><span>7.</span><span><p>7. Histological preparations of the heart of <em>Strophocheilus oblongus</em> that had long been stimulated through its cardiac nerve show a release of the granular content in the cells and disclose stages of a secretory cycle. It is suggested that these cells are glandular tissue and perform a hormonal function.</p></span></li></ul></div>","PeriodicalId":78189,"journal":{"name":"Comparative biochemistry and physiology","volume":"37 4","pages":"Pages 481-484, IN11-IN14, 485-492"},"PeriodicalIF":0.0,"publicationDate":"1970-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0010-406X(70)90094-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87745444","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: 8
Renal function in Macaca speciosa 猕猴的肾功能
Comparative biochemistry and physiology Pub Date : 1970-12-15 DOI: 10.1016/0010-406X(70)90097-6
Richard J Cronin , Sidney Solomon , Eugene L Klingler Jr.
{"title":"Renal function in Macaca speciosa","authors":"Richard J Cronin ,&nbsp;Sidney Solomon ,&nbsp;Eugene L Klingler Jr.","doi":"10.1016/0010-406X(70)90097-6","DOIUrl":"10.1016/0010-406X(70)90097-6","url":null,"abstract":"<div><p></p><ul><li><span>1.</span><span><p>1. Clearances of creatinine, inulin and para-aminmohippurate as well as diluting ability and response to hypertonic saline infusion were measured in <em>Macaca speciosa</em>.</p></span></li><li><span>2.</span><span><p>2. Clearance values obtained are similar to those reported in other small primate species and similar to values in humans.</p></span></li><li><span>3.</span><span><p>3. Diluting ability is comparable to that in man.</p></span></li><li><span>4.</span><span><p>4. This species alters sodium excretion in response to hypertonic saline infusion by changes in tubular reabsorption, rather by changing glomerular filtration rate.</p></span></li></ul></div>","PeriodicalId":78189,"journal":{"name":"Comparative biochemistry and physiology","volume":"37 4","pages":"Pages 511-516"},"PeriodicalIF":0.0,"publicationDate":"1970-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0010-406X(70)90097-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90907372","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: 1
The induced wave activity of the olfactory bulbs of toads, iguanas and snakes 蟾蜍、鬣蜥和蛇的嗅球的感应波活动
Comparative biochemistry and physiology Pub Date : 1970-12-15 DOI: 10.1016/0010-406X(70)90095-2
P Graystone, Bobbi Low, Joan Rogers, H McLennan
{"title":"The induced wave activity of the olfactory bulbs of toads, iguanas and snakes","authors":"P Graystone,&nbsp;Bobbi Low,&nbsp;Joan Rogers,&nbsp;H McLennan","doi":"10.1016/0010-406X(70)90095-2","DOIUrl":"10.1016/0010-406X(70)90095-2","url":null,"abstract":"<div><p></p><ul><li><span>1.</span><span><p>1. The temperature dependence of the frequency of induced waves of the olfactory bulbs of toads, iguanas and snakes has been determined.</p></span></li><li><span>2.</span><span><p>2. Linear, semilogarithmic and log/log transformations of these data were equally statistically significant.</p></span></li><li><span>3.</span><span><p>3. The semilogarithmic transformations yielded <em>Q</em><sub>10</sub> values varying between 1·36 and 1·71 for the four species examined.</p></span></li><li><span>4.</span><span><p>4. The results support the likelihood that a common mechanism for the generation of olfactory induced waves exists amongst the vertebrata.</p></span></li></ul></div>","PeriodicalId":78189,"journal":{"name":"Comparative biochemistry and physiology","volume":"37 4","pages":"Pages 493-502"},"PeriodicalIF":0.0,"publicationDate":"1970-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0010-406X(70)90095-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80843844","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: 12
Occurrence of biliary amylase in vertebrates: Influence of NaCl and pH 胆淀粉酶在脊椎动物体内的发生:NaCl和pH的影响
Comparative biochemistry and physiology Pub Date : 1970-12-15 DOI: 10.1016/0010-406X(70)90103-9
Shelley Bhattacharya, K.C Ghose
{"title":"Occurrence of biliary amylase in vertebrates: Influence of NaCl and pH","authors":"Shelley Bhattacharya,&nbsp;K.C Ghose","doi":"10.1016/0010-406X(70)90103-9","DOIUrl":"10.1016/0010-406X(70)90103-9","url":null,"abstract":"<div><p></p><ul><li><span>1.</span><span><p>1. Comparative studies on biliary amylase were done in fish, amphibian, reptile, bird and mammal.</p></span></li><li><span>2.</span><span><p>2. Pancreatic amylase is tenfold and eightfold more active in <em>Passer domesticus</em> and <em>Corvus spledens</em> respectively than biliary amylase.</p></span></li><li><span>3.</span><span><p>3. Amylase in bile is either absent or with only little activity in carnivore vertebrates. The reducing sugar produced was 4.5 mg and 5.7 mg/100 ml in toad and <em>Calotes</em> respectively.</p></span></li><li><span>4.</span><span><p>4. NaCl dependence is pronounced and leads to about 50 per cent increase in activity.</p></span></li><li><span>5.</span><span><p>5. Optimum pH 4.9, for amylolytic activity in bile and liver of crow, corresponds with the luminal pH of the duodenum.</p></span></li></ul></div>","PeriodicalId":78189,"journal":{"name":"Comparative biochemistry and physiology","volume":"37 4","pages":"Pages 581-587"},"PeriodicalIF":0.0,"publicationDate":"1970-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0010-406X(70)90103-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76116884","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: 1
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