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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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[Apparent transitory hyperthyrotropinemia of mothers and newborn infants related to the presence of maternal immunoglobulins]. [与母体免疫球蛋白存在有关的母亲和新生儿明显的短暂性高甲状腺素血症]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-15
J L Vandalem, P Czernichow, G Henmen
{"title":"[Apparent transitory hyperthyrotropinemia of mothers and newborn infants related to the presence of maternal immunoglobulins].","authors":"J L Vandalem,&nbsp;P Czernichow,&nbsp;G Henmen","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Some newborns infants (screened for congenital hypothyroïdism) and their mothers were found to present an apparent isolated hyperthyrotropinemia. A large molecular size material (150 000 dalton) was found to carry the apparent immunoreactivity and was characterized as immunoglobulins, capable of binding TSH as well as Rabbit IgG. These maternal immunoglobulins are passively transferred to the newborn infants and interfere in various radioimmunoassays.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 13","pages":"1051-4"},"PeriodicalIF":0.0,"publicationDate":"1980-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17835709","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
[Characterization of viral RNA in Friend tumor cells having lost their capacity to produce viral particles]. [在失去产生病毒颗粒能力的Friend肿瘤细胞中表征病毒RNA]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-15
J Robert, D Mathieu-Mahul, S Gisselbrecht, E Elfassi, C J Larsen
{"title":"[Characterization of viral RNA in Friend tumor cells having lost their capacity to produce viral particles].","authors":"J Robert,&nbsp;D Mathieu-Mahul,&nbsp;S Gisselbrecht,&nbsp;E Elfassi,&nbsp;C J Larsen","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Cytoplasmic RNA from Friend tumoral cells which had lost their ability to produce viral particles was analyzed for its viralRNA content. A major 32S RNA corresponding to the genome of the defective SFFV virus was detected by hybridization with a synthetic DNA complementary to the Rauscher virus genome. Very low amounts of a 34S species were also found. No 38S RNA with the size of the helper virus genome was present in the cells. It was concluded that the cessation of virus production resulted from a disappearance of the helper provirus from these cells or from a block in the transcriptional process of this provirus.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 13","pages":"1047-50"},"PeriodicalIF":0.0,"publicationDate":"1980-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17835708","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
[Inhibition of the preovulatory secretion of gonadotropins by prolactin in rats seems to depend on the strain used]. [催乳素对大鼠排卵前促性腺激素分泌的抑制作用似乎取决于所使用的菌株]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-15
C Pasqualini, A El Abed, B Kerdelhue
{"title":"[Inhibition of the preovulatory secretion of gonadotropins by prolactin in rats seems to depend on the strain used].","authors":"C Pasqualini,&nbsp;A El Abed,&nbsp;B Kerdelhue","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Intraperitoneal injection of Rat Prolactin to cyclic female Rats results in preovulatory changes which depend on the strain of animals. Specifically, preovulatory surges of luteinizing hormone and follicle stimulating hormone were suppressed in Sprague-Dawley Rats while delayed but enhanced preovulatory surges of both gonadotropins were observed in Wistar strain.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 13","pages":"1055-8"},"PeriodicalIF":0.0,"publicationDate":"1980-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17835710","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
[Importance of the parameters of temperature and natural light on stability of 2 types of L(+) lactate:cytochrome oxidoreductases (cytochromes b2) extracted from Hansenula anomala yeast]. [温度和自然光参数对2种L(+)乳酸细胞色素氧化还原酶(细胞色素b2)稳定性的重要性]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-15
M Prats
{"title":"[Importance of the parameters of temperature and natural light on stability of 2 types of L(+) lactate:cytochrome oxidoreductases (cytochromes b2) extracted from Hansenula anomala yeast].","authors":"M Prats","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In this communication, we present the effect of two parameters, temperature and daylight-at high ionic strength-on the stability of H-flavocytochrome b2 solutions prepared using [H-flavocytochrome b2 (S) or not [H-flavocytochrome b2 (n) n-butanol during extraction. These two enzyme preparations presented the same behaviour towards these two parameters: in the dark, temperature was critical; in daylight, an opposite effect was observed for this parameter: the stability of samples was smaller at 0 degrees C. However, the evolution of life of the classical kinetic parameters (Km and Vm) of the enzymatic reaction is presented for three samples of H-flavocytochrome b2 (n) or (s) exposed to daylight at 20 +/- 0,1 degrees C.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 13","pages":"1037-40"},"PeriodicalIF":0.0,"publicationDate":"1980-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17835005","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
[Insomnia induced by P-chlorophenylalanine in cats. Its reversibility by intraventricular injections of indolamines]. 对氯苯丙氨酸致猫失眠。脑室内注射吲哚胺的可逆性。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-15
F Petitjean, C Buda, M Janin, M Sallanon, M Jouvet
{"title":"[Insomnia induced by P-chlorophenylalanine in cats. Its reversibility by intraventricular injections of indolamines].","authors":"F Petitjean,&nbsp;C Buda,&nbsp;M Janin,&nbsp;M Sallanon,&nbsp;M Jouvet","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Intraventricular injection of 250 microgram of 5 HTP induces both slow wave and paradoxical sleep, after 20-60 min. latencies, in insomniac Cats pretreated with P-chlorophenylalanine. Direct injections of 5 HTP in several brain stem structures do not induce sleep. The long latency or paradoxical sleep induction and its suppression with chloramphenicol suggest that indolamines are not directly responsible for paradoxical sleep, but that they act by controlling the synthesis and/or the liberation in the periventricular system of some specific paradoxical sleep inducing factor.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 13","pages":"1063-6"},"PeriodicalIF":0.0,"publicationDate":"1980-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17511461","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
[Production of a mastocyte growth factor in lymphocyte cultures stimulated by a mitogen or by allogenic cells]. [在有丝分裂原或同种异体细胞刺激下淋巴细胞培养中产生的一种肥大细胞生长因子]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-15
G Tertian, M Dy, Y P Yung, D Guy-Grand, M A Moore, J Hamburger
{"title":"[Production of a mastocyte growth factor in lymphocyte cultures stimulated by a mitogen or by allogenic cells].","authors":"G Tertian,&nbsp;M Dy,&nbsp;Y P Yung,&nbsp;D Guy-Grand,&nbsp;M A Moore,&nbsp;J Hamburger","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Supernatants from mouse spleen leukocytes stimulated by concanavalin A or from a secondary MLC between donor and recipient of a skin allograft can induce in bone marrow cells an exponential growth of mononuclear cells with cytoplasmic basophilic granules. These cells can be maintained in liquid suspension culture for up to 6 months. They lack the properties of T or b lymphocytes, monocytes or macrophages. They have the morphological features of mast cells or basophils; the cytoplasmic granules are metachromatic for toluidine blue, alcian blue-positive at pH 0.3 and contain histamine. In addition, these cells bind monoclonal mouse IgE. They may be considered as cells of the basophil-mast cell lineage.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 13","pages":"1041-6"},"PeriodicalIF":0.0,"publicationDate":"1980-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17835006","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
[Secretion of a granular colony-stimulating factor by an adherent layer of long-term hematopoietic bone marrow cultures in mice]. [小鼠长期造血骨髓培养的粘附层分泌颗粒状集落刺激因子]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-08
S Fichelson, J M Heard, B Varet
{"title":"[Secretion of a granular colony-stimulating factor by an adherent layer of long-term hematopoietic bone marrow cultures in mice].","authors":"S Fichelson,&nbsp;J M Heard,&nbsp;B Varet","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The presence of a CSF activity in long term bone marrow cultures in Mice was not described until now. Using a double layer agar technique directly on the adherent layers of the cultures, a strong CSF activity is detected in these adherent layers, before recharging the cultures at the third week, or when the cultures are not recharged. The role of this activity in long term myelopoiesis maintenance in vitro is discussed.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 12","pages":"953-6"},"PeriodicalIF":0.0,"publicationDate":"1980-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17836682","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
[Optic microscope observations on changes in enamel and dentin induced by laser beams]. 激光诱导牙本质和牙釉质变化的光学显微镜观察。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-08
J Melcer, F Melcer-Dauchy, R Hasson, R Mérard
{"title":"[Optic microscope observations on changes in enamel and dentin induced by laser beams].","authors":"J Melcer,&nbsp;F Melcer-Dauchy,&nbsp;R Hasson,&nbsp;R Mérard","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>By a laser beam, enamel and dentin are changed into an identical crystalline structure observed in reflected light and described as recrystallisation after fusion. The Vickers pyramidal numbers of these areas are the same as the mature enamel surface (590 VPN). The theoretical calculation proved that after irradiation in enamel there is an elevation of temperature about 2,5 degrees C through 3 mm. These observations suggest that new operative techniques might be possible.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 12","pages":"965-8"},"PeriodicalIF":0.0,"publicationDate":"1980-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17836685","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
[Structural similarities between the hypocalcemia hormone of the corpuscles of Stannius of the eel (Anguilla anguilla L.) and the mammalian parathyroid hormone]. [鳗(Anguilla Anguilla L.)小体的低钙激素与哺乳动物甲状旁腺激素的结构相似性]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-08
C Milet, C J Hillyard, E Martelly, S Girgis, I M Intyre, E Lopez
{"title":"[Structural similarities between the hypocalcemia hormone of the corpuscles of Stannius of the eel (Anguilla anguilla L.) and the mammalian parathyroid hormone].","authors":"C Milet,&nbsp;C J Hillyard,&nbsp;E Martelly,&nbsp;S Girgis,&nbsp;I M Intyre,&nbsp;E Lopez","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Extracts of the corpuscules of Stannius enhance Eel gill calcium efflux and increase bone resorption in the Rat. Thus the hormone is hypocalcaemic in the Eel although hypercalcaemic in the Rat. We show here that a 15 min. pulse perfusion of a synthetic fragment of human PTH 1-34 had a similar effect on gill calcium fluxes to that of CS extract. Further, we found that Eel plasma contains a substance reacting with five different antibodies against bovine PTH. The concentration of this plasma material is enhanced seven-fold by parenteral calcium and rendered extremely low or absent by CS removal. A convenient name for this major calcium-regulating hormone is parathyrine of the corpuscles of Stannius (PCS) since this reflects both its glandular source and chemical structure.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 12","pages":"977-80"},"PeriodicalIF":0.0,"publicationDate":"1980-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17836687","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 of the gene for the mitochondrial 15S ribosomal RNA of yeast]. [酵母线粒体15S核糖体RNA基因核苷酸序列]。
Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles Pub Date : 1980-12-08
F Sor, H Fukuhara
{"title":"[Nucleotide sequence of the gene for the mitochondrial 15S ribosomal RNA of yeast].","authors":"F Sor,&nbsp;H Fukuhara","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>We have determined the nucleotide sequence of a DNA segment carrying the entire 15S ribosomal RNA gene of yeast mitochondrial genome. Many stretches of sequence are present which are homologous to the E. coli 16S ribosomal RNA gene. The gene sequence can be folded into a secondary structure according to the [1] model on bacterial ribosomal RNAs. The structure reveals a striking similarity between the two RNAs despite the large difference in their base compositions. In the middle of the gene, we found a guanine-cytosine rich sequence that is also present in several other regions of the mitochondrial genome.</p>","PeriodicalId":10605,"journal":{"name":"Comptes rendus des seances de l'Academie des sciences. Serie D, Sciences naturelles","volume":"291 12","pages":"933-6"},"PeriodicalIF":0.0,"publicationDate":"1980-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17324769","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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