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

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[Memory facilitation induced by delayed electric stimulation of the entorhinal cortex in mice]. [小鼠内嗅皮层延迟电刺激诱导记忆促进]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-10-06
M Gauthier, B Soumireu-Mourat, C Destrade
{"title":"[Memory facilitation induced by delayed electric stimulation of the entorhinal cortex in mice].","authors":"M Gauthier,&nbsp;B Soumireu-Mourat,&nbsp;C Destrade","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A subconvulsive bilateral stimulation of the lateral entorhinal cortex has been applied in BALB/c mice at different time intervals after an appetitive operant conditioning task. 24 hrs later, compared to the control subjects, the performance was improved only in animals stimulated 30 min. after the first learning session. No change was observed in animals stimulated 30 sec. or 3 hrs. post-trial. These results suggest that entorhinal cortex is involved rather late in memory processes.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 5","pages":"505-7"},"PeriodicalIF":0.0,"publicationDate":"1980-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17829964","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
[Level of polysomes in cells of Escherichia coli treated with sublethal doses of aminoglycosides]. [亚致死剂量氨基糖苷处理大肠杆菌细胞中的多聚体水平]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-10-06
J C Cortay, J Marchal, A Cozzone
{"title":"[Level of polysomes in cells of Escherichia coli treated with sublethal doses of aminoglycosides].","authors":"J C Cortay,&nbsp;J Marchal,&nbsp;A Cozzone","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Polysome level was measured in Escherichia coli cells grown in the presence of sublethal doses of four different aminoglycosides which all induce mistranslation: streptomycin, neomycin, kanamycin and gentamycin. No significant variation was noticed as referred to the level of polysomes in normally growing cells. This observation indicates that the erroneous incorporation of amino acids into polypeptide chains does not necessarily result in the release of ribosomes from messenger RNA molecules.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 5","pages":"473-6"},"PeriodicalIF":0.0,"publicationDate":"1980-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17829963","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
[Micromethod of measuring the 3 brain isoenzymes of enolase]. 【脑内烯醇化酶3种同工酶的微法测定】。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-09-29
H Scarna, A Keller, J F Pujol
{"title":"[Micromethod of measuring the 3 brain isoenzymes of enolase].","authors":"H Scarna,&nbsp;A Keller,&nbsp;J F Pujol","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The brain of the vertebrates contains three isozymic forms of the glycolytic enzyme enolase, two of which are neuron specific. These proteins could therefore be utilized as biochemical markers for various studies of neurons. We have devised a separation procedure which allows the measurement of the three enolase forms from minute amounts of tissue (50 to 100 microgram total protein). We show that this method can be applied to studies of brain microstructures, in vivo and in vitro (clonal cell lines) neural differentiation, and in measurements in biological fluids.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 4","pages":"397-400"},"PeriodicalIF":0.0,"publicationDate":"1980-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17829326","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
[Pseudotumoral uterine reaction in the rat treated with a benzofuro-benzoxepin]. [苯并呋喃-苯并西平治疗大鼠假瘤性子宫反应]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-09-29
G Barchewitz, F Binon, A Cier, H Tuchmann-Duplessis
{"title":"[Pseudotumoral uterine reaction in the rat treated with a benzofuro-benzoxepin].","authors":"G Barchewitz,&nbsp;F Binon,&nbsp;A Cier,&nbsp;H Tuchmann-Duplessis","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>When orally administered, 5-(3-diméthylamino propyliden)-benzofuro [2,3-c] benzoxepin-1, which antagonizes several biogenic amines, is slightly sedative and has also endocrinological properties in the Rat, induces the appearance of localized lesions of uterine stroma in 2 to 16% of the animals. The cytological picture could suggest a tumorogenesis. In fact, these lesions represent a non-tumoral reactional hyperplasia with nuclear abnormalities due to a hormonal stimulation.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 4","pages":"409-11"},"PeriodicalIF":0.0,"publicationDate":"1980-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17829329","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
[Bone dedifferentiation ion during healing of amputated digits of mice, and study of its control]. [小鼠断指愈合过程中骨去分化及其对照研究]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-09-29
N Al Samarrae, C Chapron
{"title":"[Bone dedifferentiation ion during healing of amputated digits of mice, and study of its control].","authors":"N Al Samarrae,&nbsp;C Chapron","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Processus of bone dedifferentiation have been shown in Mouse after amputation of the end of digits. Their meaning and their control have been searched for. Chemical sclerosis experiments on blood-vessels and ligature of the superficial femoral artery allowed to show they depended on the blood flow in the limb.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 4","pages":"429-31"},"PeriodicalIF":0.0,"publicationDate":"1980-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17829332","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
[Immunocytochemical localization in human spermatozoa of tubulin and the associated high molecular weight proteins MAP1 and MAP2]. [微管蛋白及其相关的高分子量蛋白MAP1和MAP2在人精子中的免疫细胞化学定位]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-09-29
R Maunoury, A M Hill
{"title":"[Immunocytochemical localization in human spermatozoa of tubulin and the associated high molecular weight proteins MAP1 and MAP2].","authors":"R Maunoury,&nbsp;A M Hill","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>By immunofluorescent and immunoperoxidase techniques and with the use of highly purified antibodies, tubulin and its associated proteins, MAP1 and MAP2 have been identified and precisely localized in human spermatozoa. In relation to well known structural elements, tubulin appeared localized to the region of the axoneme, the centriolar adjunct and the equatorial part of the acrosome, in contrast MAP1 and MAP2 were localized to the post-nuclear region and in the fibrous sheath of the principal piece of the flagella.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 4","pages":"425-8"},"PeriodicalIF":0.0,"publicationDate":"1980-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17829331","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
[Crystallization of the complex formed between yeast aspartyl tRNA and its specific aminoacyl tRNA synthetase]. [酵母天冬氨酸tRNA与其特定的氨酰tRNA合成酶之间形成复合物的结晶]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-09-29
R Giegé, B Lorber, J P Ebel, D Moras, J C Thierry
{"title":"[Crystallization of the complex formed between yeast aspartyl tRNA and its specific aminoacyl tRNA synthetase].","authors":"R Giegé,&nbsp;B Lorber,&nbsp;J P Ebel,&nbsp;D Moras,&nbsp;J C Thierry","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The crystallization of the complex formed between aspartic acid tRNA from the yeast Saccharomyces cerevisiae and homologous aspartyl-tRNA synthetase is described. Crystals were obtained, using the vapour phase diffusion technique and ammonium sulphate as the precipitant agent.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 4","pages":"393-6"},"PeriodicalIF":0.0,"publicationDate":"1980-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17829325","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
[Partial purification and characterization of thymidine phosphorylase in human platelets]. [人血小板胸苷磷酸化酶的部分纯化和鉴定]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-09-29
C Desgranges, G Razaka, J M Lamazière, M Rabaud, H Bricaud, M Boisseau
{"title":"[Partial purification and characterization of thymidine phosphorylase in human platelets].","authors":"C Desgranges,&nbsp;G Razaka,&nbsp;J M Lamazière,&nbsp;M Rabaud,&nbsp;H Bricaud,&nbsp;M Boisseau","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>An enzyme which catalyzes the phosphorolytic cleavage of thymidine, and whose behaviour is characteristic of thymidine phosphorylase, was purified 130 times from human blood platelets. The results obtained by chromatography and electrophoresis, enable us to consider the existence of a dimeric form of this enzyme.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 4","pages":"405-8"},"PeriodicalIF":0.0,"publicationDate":"1980-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17829328","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
[Depression by morphine of various descending inhibitory controls modulating the transmission of nociceptive information at the spinal level in the rat]. [吗啡对大鼠脊髓水平伤害性信息传递的抑制作用]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-09-29
D Le Bars, D Chitour, E Kraus, A H Dickenson, J M Besson
{"title":"[Depression by morphine of various descending inhibitory controls modulating the transmission of nociceptive information at the spinal level in the rat].","authors":"D Le Bars,&nbsp;D Chitour,&nbsp;E Kraus,&nbsp;A H Dickenson,&nbsp;J M Besson","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Recording from convergent neurones--i. e. those responding to both non-noxious and noxious cutaneous stimuli--in the dorsal horn of the intact anaesthetized Rat, two distinct effects are seen after application of noxious stimuli: there is an activation of units of the segmental pool, along with a very powerful inhibition of the remaining neuronal population (diffuse noxious inhibitory controls, DNIC). Morphine at doses inadequate to directly depress the activity of these units specifically blocks the inhibition. Since DNIC is dependent upon supraspinal mechanisms, these observations show that morphine is capable of depressing certain descending inhibitory controls, at least when these are induced by noxious peripheral stimuli.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 4","pages":"433-6"},"PeriodicalIF":0.0,"publicationDate":"1980-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17829962","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
[Electrocorticograms and the histochemical effects in the rat accompanying the reactivation of cholinesterases after the effects of an organophosphorus inhibitor]. [有机磷抑制剂作用后大鼠胆碱酯酶再激活的皮质电图及组织化学效应]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-09-29
I de La Manche, A M Desroches, C Bouchaud, P Laget
{"title":"[Electrocorticograms and the histochemical effects in the rat accompanying the reactivation of cholinesterases after the effects of an organophosphorus inhibitor].","authors":"I de La Manche,&nbsp;A M Desroches,&nbsp;C Bouchaud,&nbsp;P Laget","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The administration of paraoxon, an organophosphate inhibitor of cholinesterases, elicits theta rhythms, fast rhythms and paroxystical alterations on the electrocorticogram of the Rat. The disappearance of these abnormalities of the cortical activity after administration of aromatic oximes seems to be in good correlation with the restoration of cerebral cholinesterase activity revealed by histochemical method.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 4","pages":"401-3"},"PeriodicalIF":0.0,"publicationDate":"1980-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17829327","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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