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Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles最新文献

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[Inhibition of LH-RH induced release of gonadotropins by substance P in cultured rat anterior pituitary cells]. [P物质抑制rh诱导的大鼠垂体前细胞促性腺激素释放]。
Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles Pub Date : 1978-10-16
B Kerdelhué, A Khar, D de Nay, Y Langlois, T Bernnardo, J Liwska, M Jutisz
{"title":"[Inhibition of LH-RH induced release of gonadotropins by substance P in cultured rat anterior pituitary cells].","authors":"B Kerdelhué,&nbsp;A Khar,&nbsp;D de Nay,&nbsp;Y Langlois,&nbsp;T Bernnardo,&nbsp;J Liwska,&nbsp;M Jutisz","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Using anterior pituitary cells cultured for 7 days and then incubated for 4 hrs, substance P, an undecapeptide, inhibited the stimulatory effect of LH-RH on the release of LH-RH on the release of LH and FSH. This inhibitory effect, which was similar for both gonadotropins was only observed when the adenopituitary cells were put in culture at DI and Proestrus stages of the oestrous cycle. Furthermore substance P partly inhibited the basal release of FSH at DI and DII stages but did never affected that of LH.</p>","PeriodicalId":10544,"journal":{"name":"Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles","volume":"287 9","pages":"879-82"},"PeriodicalIF":0.0,"publicationDate":"1978-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11323693","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
[Prediction of glycan structures of human N-glycoproteins]. [人类n -糖蛋白聚糖结构的预测]。
Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles Pub Date : 1978-10-16
G Strecker, J Montreuil
{"title":"[Prediction of glycan structures of human N-glycoproteins].","authors":"G Strecker,&nbsp;J Montreuil","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>By adding the sequence beta-(1 leads to 4)-GlcNAc-beta-(1 leads to)-Asn or alpha Fuc-(1 leads to 6 or 3)-beta-(1 leads to 4)-GlcNAc-beta-(1 leads to)-Asn to the oligosaccharides isolated from human urines of mannosidosis, fucosidosis and sialidosis, we are able to reconstitute numerous structures of asparaginyl-glycans. We postulate i) that these structures which have not yet been characterized pre-exist in glycans of human glycoproteins, probably in the cytoplasm or/and the cell membrane; ii) that they are products of the action of endo-beta-N-acetyl-glucosaminidases which are protected because of the lack of exoglycosidases and accumulate in the cells, and then in the urine.</p>","PeriodicalId":10544,"journal":{"name":"Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles","volume":"287 9","pages":"887-90"},"PeriodicalIF":0.0,"publicationDate":"1978-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11323694","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
[Short term tests of carcinogenesis. Evaluation, predictive values, and diverse strategies]. [癌变的短期试验。评估、预测值和多种策略]。
Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles Pub Date : 1978-10-16
H Bedouelle, M Hofnung
{"title":"[Short term tests of carcinogenesis. Evaluation, predictive values, and diverse strategies].","authors":"H Bedouelle,&nbsp;M Hofnung","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The concepts of validation, evaluation and predictive values of short term tests for carcinogenicity are rigorously defined. The relationships between the parameters measuring these concepts are established. This allows and estimation of the practical efficiency of Ames Salmonella test (1). A new strategy for the evaluation of tests is proposed.</p>","PeriodicalId":10544,"journal":{"name":"Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles","volume":"287 9","pages":"891-4"},"PeriodicalIF":0.0,"publicationDate":"1978-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11323695","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
[Changes in mammary tissue lipid metabolism in the goats during the first 2 months of lactation]. [山羊泌乳前2个月乳腺组织脂质代谢的变化]。
Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles Pub Date : 1978-10-16
Y Chilliard, D Sauvant, P Morand-Fehr, G Durand
{"title":"[Changes in mammary tissue lipid metabolism in the goats during the first 2 months of lactation].","authors":"Y Chilliard,&nbsp;D Sauvant,&nbsp;P Morand-Fehr,&nbsp;G Durand","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>5 French Alpine Goats were studied after normal or premature parturition. Mammary tissue acetyl-C oA carboxylase, glucose-6-phosphate dehydrogenase, malic enzyme and lipoprotein lipase (LPL) activities varied in parallel with milk fat secretion from the 3rd to the 9th week of lactation. Variations of mammary LPL activity and of long chain fatty acid secretion were positively highly correlated during that period. In goats with normal parturition, lipogenic activities seemed to reach a maximum level shortly after parturition. There was a positive correlation between mammary Ll activities and plasma non esterified fatty acid contents, possibly reflecting a relationship between adipose tissue mobilisation and mammary metabolism.</p>","PeriodicalId":10544,"journal":{"name":"Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles","volume":"287 9","pages":"871-4"},"PeriodicalIF":0.0,"publicationDate":"1978-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11254787","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
[Epileptogenic action of intra-amygdaloid injection of kainic acid]. [杏仁核内注射kainic酸致癫痫作用]。
Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles Pub Date : 1978-10-09
Y Ben-Ari, J Lagowska
{"title":"[Epileptogenic action of intra-amygdaloid injection of kainic acid].","authors":"Y Ben-Ari,&nbsp;J Lagowska","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Intra-amygdaloid unilateral application of low doses of kainic acid rapidly elicits, in both chronic and acute conditions, secondarily generalized convulsive seizures which often culminate in fatal true status epilepticus unless appropriate anti-epileptic drugs are provided. Spontaneous recurrent seizures are observed for several hours starting approximately 10 min. after the application of kainic acid. In addition to the primary degeneration in the amygdaloid complex, a secondary cell loss is seen in CA3 area of the dorsal hippocampus. It is suggested that this procedure may constitute a particularly suitable model for the study of true focalized status epilepticus.</p>","PeriodicalId":10544,"journal":{"name":"Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles","volume":"287 8","pages":"813-6"},"PeriodicalIF":0.0,"publicationDate":"1978-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11324067","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
[Multiplication of Paramecium aurelis on board the orbital station Saliout-6 (Cytose experiment)]. [轨道空间站唾液-6号(Cytose实验)上的金黄色草履虫繁殖]。
Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles Pub Date : 1978-10-09
R Tixador, G Richoilley, G Grechko, Y Nefedov, H Planel
{"title":"[Multiplication of Paramecium aurelis on board the orbital station Saliout-6 (Cytose experiment)].","authors":"R Tixador,&nbsp;G Richoilley,&nbsp;G Grechko,&nbsp;Y Nefedov,&nbsp;H Planel","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":10544,"journal":{"name":"Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles","volume":"287 8","pages":"829-32"},"PeriodicalIF":0.0,"publicationDate":"1978-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11324069","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
[Nucleotide sequence determination of yeast mitochondrial phenylalanine-tRNA]. [酵母线粒体苯丙氨酸- trna核苷酸序列测定]。
Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles Pub Date : 1978-10-09
R Martin, A P Sibler, J M Schneller, G Keith, A J Stahl, G Dirheimer
{"title":"[Nucleotide sequence determination of yeast mitochondrial phenylalanine-tRNA].","authors":"R Martin,&nbsp;A P Sibler,&nbsp;J M Schneller,&nbsp;G Keith,&nbsp;A J Stahl,&nbsp;G Dirheimer","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The primary structure of mitochondrial tRNAPhe from Saccharomyces cerevisiae, purified by two-dimensional polyacrylamide gel electrophoresis, was determined using, standard procedures on in vivo 32P-labeled tRNA, as well as the new 5'-end postlabeling techniques. We propose a cloverleaf model which allows for tertiary interaction between cytosine in position 46 and guanine in position 15 and maximizes base pairing in the psi C stem, thus excluding the uracile in position 50 from base pairing in the psi C stem. Comparison of the primary structure of this tRNA with all other known procaryotic, chloroplastic or cytoplasmic tRNAsPhe sequences does not lead to any conclusion about the endosymbiotic theory of mitochondria evolution.</p>","PeriodicalId":10544,"journal":{"name":"Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles","volume":"287 8","pages":"845-8"},"PeriodicalIF":0.0,"publicationDate":"1978-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11324003","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
[Spatial conformation of human serotransferrin glycans]. 人血清转铁蛋白聚糖的空间构象。
Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles Pub Date : 1978-10-09
J Montreuil, B Fournet, G Spik, G Strecker
{"title":"[Spatial conformation of human serotransferrin glycans].","authors":"J Montreuil,&nbsp;B Fournet,&nbsp;G Spik,&nbsp;G Strecker","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The construction of molecular models for the human serotransferrin glycans shows that they present one compact section linked to the protein and constituted by the pentasaccharide alpha-Man-(1 leads to 3)-[alpha-Man-(1 leads to 6)]-beta-Man-(1 leads to 4)-beta-GlcNAc-(1 leads to 4)-beta-GlcNAc-(1 leads to)-Asn to which are attached two \"antennae\" consisting of the trisaccharide alpha-NANA-(2 leads to 6)-beta-Gal-(1 leads to 4)-beta-GlcNAc. The trisaccharide sequence beta-Man-(1 leads to 4)-beta-GlcNAc-(1 leads to 4)-beta-GlcNAc adopts a flat and rigid conformation, stabilised by hydrogen bonds. In contrast, the sequence alpha-NANA-(1 leads to 6)-beta-Gal-(1 leads to 4)-beta-GlcNAc-(1 leads to 2)-alpha-Man takes up a helical configuration. The two \"antennae\" can be disposed on the pentasaccharide core to give two possible configurations, one Y-shaped and the other T-shaped. In both cases, the general conformation of the glycans is perfectly compatible with their postulated role as a recognition signal.</p>","PeriodicalId":10544,"journal":{"name":"Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles","volume":"287 8","pages":"837-40"},"PeriodicalIF":0.0,"publicationDate":"1978-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11324071","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
[Role of the infundibular complex and its neural afferents in the photosexual reflex in the quail]. [窝状复合体及其神经传入在鹌鹑性光反射中的作用]。
Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles Pub Date : 1978-10-09
J Oliver, S Herbuté, J D Baylé
{"title":"[Role of the infundibular complex and its neural afferents in the photosexual reflex in the quail].","authors":"J Oliver,&nbsp;S Herbuté,&nbsp;J D Baylé","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The photosexual reflex was suppressed in quail after bilateral preoptic lesions. However an anterior-lateral de-afferentation of the hypothalamus of previously preoptic-lesioned quail resulted in partial photo-induced testis growth. As a working hypothesis, it is suggested that the preoptic area may control some unknown extrahypothalamic influences in order to modulate the gonadotropin controlling function of the infundibular area.</p>","PeriodicalId":10544,"journal":{"name":"Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles","volume":"287 8","pages":"825-7"},"PeriodicalIF":0.0,"publicationDate":"1978-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11324068","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
[Isoelectric focusing of the serum vitamin D transport protein (DBP) and the polymorphism of Gc protein. Significance in anthropology]. 血清维生素D转运蛋白(DBP)的等电聚焦与Gc蛋白的多态性。人类学的意义]。
Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles Pub Date : 1978-10-09
J Constans, M Viau
{"title":"[Isoelectric focusing of the serum vitamin D transport protein (DBP) and the polymorphism of Gc protein. Significance in anthropology].","authors":"J Constans,&nbsp;M Viau","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The authors confirm the analogy between Gc and DBP as a result of analytic studies by isoelectrofocusing and labeling of Gc with 3H vitamin D3. The presence of a relationship between Gc polymorphism and the amount of sunshine in a given region is discussed.</p>","PeriodicalId":10544,"journal":{"name":"Comptes rendus hebdomadaires des seances de l'Academie des sciences. Serie D: Sciences naturelles","volume":"287 8","pages":"809-12"},"PeriodicalIF":0.0,"publicationDate":"1978-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11304448","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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