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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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[Uterine state of non-receptivity: demonstration of an ovotoxic substance (blastocidine) in rats]. [子宫不接受性状态:大鼠卵细胞毒性物质(囊虫碱)的证明]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-08
A Psychoyos, V Casimiri
{"title":"[Uterine state of non-receptivity: demonstration of an ovotoxic substance (blastocidine) in rats].","authors":"A Psychoyos,&nbsp;V Casimiri","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Fluid obtained from Rat uteri during the uterine state of non-receptivity refractory for nidation, contains a substance of about 700 dalton (blastocidin) which exerts a lethal effect on Rat blastocysts in vitro.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 12","pages":"973-6"},"PeriodicalIF":0.0,"publicationDate":"1980-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17836686","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
[Secondary and topographic structure of ribosomal RNA 16S of Escherichia coli]. [大肠杆菌核糖体RNA 16S的二级和地形结构]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-08
P Stiegler, P Carbon, M Zuker, J P Ebel, C Ehresmann
{"title":"[Secondary and topographic structure of ribosomal RNA 16S of Escherichia coli].","authors":"P Stiegler,&nbsp;P Carbon,&nbsp;M Zuker,&nbsp;J P Ebel,&nbsp;C Ehresmann","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>We present a model for the secondary structure of 16S ribosomal RNA from E. coli. This model has been deduced by restricting the total number of theoretical base pairings using the following criteria: (1) susceptibility of residues towards enzymatic probes that are specific for either paired or single stranded regions; (2) reactivity of certain residues to chemical modification; (3) evidence for medium and long range interactions; (4) comparative analysis of ribosomal RNA sequences from other organisms.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 12","pages":"937-40"},"PeriodicalIF":0.0,"publicationDate":"1980-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17836762","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
[Inhibitory effect of cytembena (sodium-cis-beta-methoxybenzoyl-beta-bromoacrylate) on the cell kinetics of HeLa cells in culture]. [cytembena (sodium-顺- β -甲氧基苯甲酰- β -溴丙烯酸钠)对培养HeLa细胞动力学的抑制作用]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-08
X Ronot, D Kuch, C Hecquet, M Adolphe, P Lechat, G Deysson
{"title":"[Inhibitory effect of cytembena (sodium-cis-beta-methoxybenzoyl-beta-bromoacrylate) on the cell kinetics of HeLa cells in culture].","authors":"X Ronot,&nbsp;D Kuch,&nbsp;C Hecquet,&nbsp;M Adolphe,&nbsp;P Lechat,&nbsp;G Deysson","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The inhibiting effect of Cytembena on HeLa cell kinetics has been demonstrated and analyzed. The percentage of cycling cells decreases, according to the concentration, between 7.5 and 2.5 x 10(-5) M. Estimation of DNA by cell flow cytophotometry shows an important shift in the distribution of cycling cells with a relative decrease of G1 cells and a very important accumulation of G2 cells. According to our experimental conditions, the blocking up in G2 is irreversible only at 7.5 x 10(-5) M.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 12","pages":"961-4"},"PeriodicalIF":0.0,"publicationDate":"1980-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17836684","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
[Diminution of the extracellular concentration of calcium ions during focal epileptic crisis induced by enanthotoxin in the cat cortex]. [猫皮质内肠毒素诱发局灶性癫痫危象时细胞外钙离子浓度的降低]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-08
J Louvel, U Heinemann
{"title":"[Diminution of the extracellular concentration of calcium ions during focal epileptic crisis induced by enanthotoxin in the cat cortex].","authors":"J Louvel,&nbsp;U Heinemann","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>OEnanthotoxin applied locally onto the Cat cortex produced a long-lasting epileptic focus. The basic cortical level of extracellular calcium concentration ([Ca2+]e) was decreased before the actual onset of paroxysmal discharges. In the active focus the [Ca2+]e decrease induced by a cortical or a thalamic stimulation was larger than in normal cortex. Maximal decreases were found at a depth of 300 micrometer below cortical surface. It is suggested that at this cortical level calcium conductances are increased by oenanthotoxin. This increase may be one of the mechanisms of onset of epileptic seizures.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 12","pages":"997-1000"},"PeriodicalIF":0.0,"publicationDate":"1980-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17836689","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
[Treatment of infectious coryza and persistent allergic rhinitis with thermotherapy]. 【热疗治疗感染性鼻炎及持续性变应性鼻炎】。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-08
A Yerushalmi, A Lwoff
{"title":"[Treatment of infectious coryza and persistent allergic rhinitis with thermotherapy].","authors":"A Yerushalmi,&nbsp;A Lwoff","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Local hyperthermia--insufflation in the upper respiratory paths of humidified air at 43 degrees C, three 30 min sessions at 2-3 hrs. interval--cures a high percentage of infective Coryza and exerts a prolonged beneficial effect on an important fraction of persistent allergic rhinitis.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 12","pages":"957-9"},"PeriodicalIF":0.0,"publicationDate":"1980-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17836683","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
[New data on the circadian cycle of Plasmodium. Preliminary note]. [关于疟原虫昼夜周期的新数据。]初步的注意)。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-08
I Landau, A G Chabaud
{"title":"[New data on the circadian cycle of Plasmodium. Preliminary note].","authors":"I Landau,&nbsp;A G Chabaud","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A frozen strain of Plasmodium yoelii nigeriensis is inoculated at 4 pm, midnight and 9 am onto inbred Mice. In all instances young gametocytes (type 0) appear in the blood only between 10 am and 6 pm. Although the erythrocytic schizogony occurs regularly during the whole circadian period, the latency increases progressively when the infective subinoculations are made at midnight, 4 pm and 9 am. Possibly, the infective merozoite can only enter the red blood cell around midnight.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 12","pages":"985-8"},"PeriodicalIF":0.0,"publicationDate":"1980-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17836688","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
[Simple and synergistic motor effects, induced by the stimulation of the dentate nucleus, in the awake baboon. Determination of the area of hand control]. [在清醒的狒狒中，由刺激齿状核引起的简单和协同运动效应。]确定手的控制区域]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-08
L Rispal-Padel, C Pons, F Cicirata
{"title":"[Simple and synergistic motor effects, induced by the stimulation of the dentate nucleus, in the awake baboon. Determination of the area of hand control].","authors":"L Rispal-Padel,&nbsp;C Pons,&nbsp;F Cicirata","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In the Baboon, two regions could be distinguished within the dentate nucleus according to the complexity of motor effects induced through localised electrical stimulation. (a) A rostromedial region, from which synergistic effects were elicited. This part mainly controls proximal muscles. (b) A caudolateral region from which simple movements were induced. A separate area for hand control could be identified within this part of the nucleus.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 12","pages":"1001-4"},"PeriodicalIF":0.0,"publicationDate":"1980-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17836761","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
[Formation of trypsin inhibitors during alkaline treatment of proteins]. [蛋白质碱性处理过程中胰蛋白酶抑制剂的形成]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-08
S Vimont-Rispoli, B Possompes, P Besançon
{"title":"[Formation of trypsin inhibitors during alkaline treatment of proteins].","authors":"S Vimont-Rispoli,&nbsp;B Possompes,&nbsp;P Besançon","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Casein is submitted to a severe alkaline treatment (NaOH 0,2 or 0,5 N, 1 hr., 80 degrees C). The hydrolysis by pancreatic enzymes (trypsin or chymotrypsin) is reduced in vitro and, in the case of the more severe treatment, stopped. After an extended (24 hrs.) trypsin and pronase hydrolysis, it is shown, by affinity chromatography, that peptides, which are not hydrolysable, can bind to trypsin and inactivate this enzyme in vitro.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 12","pages":"945-8"},"PeriodicalIF":0.0,"publicationDate":"1980-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17836680","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
[Parameters influencing inactivation-dissociation/reactivation-association phenomena induced by variations of ionic strength of L (+)lactate: cytochrome c oxidoreductase (cytochrome b2) extract of the yeast Hansenula anomala]. [影响L(+)乳酸:细胞色素c氧化还原酶(细胞色素b2)酵母提取物离子强度变化诱导的失活-解离/再活化-关联现象的参数]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-08
M Prats
{"title":"[Parameters influencing inactivation-dissociation/reactivation-association phenomena induced by variations of ionic strength of L (+)lactate: cytochrome c oxidoreductase (cytochrome b2) extract of the yeast Hansenula anomala].","authors":"M Prats","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>H-flavocytochrome b2, a tetramer enzyme, is inactivated, at low ionic strength and can be reactivated, increasing the ionic strength of the medium. The inactivation-reactivation process was structurally manifested by a dissociation-association phenomenon between subunits. It was clearly shown that the inactivation-dissociation process appeared independent of enzyme concentration whereas the reactivation-association phenomenon was enzyme concentration dependent. However, proteins protect H-flavocytochrome b2 from inactivation-dissociation, only when electrostatic interactions are possible between the two proteins: Horse heart cytochrome c was a good protector whereas serum albumin had no protector effect.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 12","pages":"941-4"},"PeriodicalIF":0.0,"publicationDate":"1980-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17324770","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
[Analogies between "fraction P" with immunosuppressive properties in pregnant females and a protein fraction induced by estradiol treatment in the amphibian Salamandra salamandra L]. [在怀孕的雌性动物中具有免疫抑制特性的“片段P”与雌二醇在两栖动物Salamandra Salamandra L中诱导的蛋白质片段的相似性]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-08
M T Badet
{"title":"[Analogies between \"fraction P\" with immunosuppressive properties in pregnant females and a protein fraction induced by estradiol treatment in the amphibian Salamandra salamandra L].","authors":"M T Badet","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A \"fraction P\" analogue possessing immunosuppressive properties during pregnancy in the Salamandra, can be induced by treating males and females with oestradiol. Both fractions possess the same physiochemical characteristics, and equally react against a Rabbit immune serum anti \"fraction P\" of pregnant Salamandra. But the proteic fraction induced by hormonal treatment does immunosuppressive properties.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 12","pages":"949-52"},"PeriodicalIF":0.0,"publicationDate":"1980-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17836681","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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