Annales De Biologie Animale Biochimie Biophysique最新文献_第5页

Effects of diet and progesterone on the cellularity of parametrial adipose tissue in mice 饮食和黄体酮对小鼠参数脂肪组织细胞结构的影响

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19791019

E. Pallier, R. Aubert, D. Lemonnier

引用次数: 2

Activités de la musculature gastro-intestinale et mouvements des contenus digestifs 胃肠道肌肉的活动和消化内容物的运动

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790625

J. Laplace, C. Roman

引用次数: 11

lodohormones in the serum of chick embryos and post-hatching chickens as influenced by incubation temperature. Relationship with the hatching process and thermogenesis 鸡胚和孵化后鸡血清中lodohormone激素与孵育温度的关系。与孵化过程和产热的关系

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19791008

E. Decuypere, E. Nouwen, E. Kuhn, R. Geers, H. Michels

{"title":"lodohormones in the serum of chick embryos and post-hatching chickens as influenced by incubation temperature. Relationship with the hatching process and thermogenesis","authors":"E. Decuypere, E. Nouwen, E. Kuhn, R. Geers, H. Michels","doi":"10.1051/RND:19791008","DOIUrl":"https://doi.org/10.1051/RND:19791008","url":null,"abstract":"temperatures in a forced-draught laboratory incubator. A low incubation temperature resulted in a longer incubation period, whereas eggs incubated at a higher temperature hatched sooner. In all the temperature groups, serum T3 and T4 levels increased during the incubation period studied. Whatever the total duration of incubation within the experimental conditions, maximal serum T3 and Tg levels were always obtained the day of pipping. Embryos having perforated the air-space membrane the day before pipping showed elevated serum T3, but not T4, levels as compared to embryos without perforation. The presence of high serum T3 levels in chick embryos after perforation of the air-space membrane, and the sharp increase in the T3/, ratio before pipping were indicative of the important role of T 3 in the processes of pipping and hatching. After days 16 to 17, depending on the incubation temperature, a plateau for heat production (measured by indirect calorimetry) was reached while serum T3 and T4 levels were still increasing. Following the event of pipping, there was a rapid increase in heat production. A plateau might be due to the physical impossibility of each embryo to react upon an increase in T3 and T4 secretion by an increment in oxygen consumption, and would not exclude a relation between iodohormone levels and thermogenesis during development.","PeriodicalId":7885,"journal":{"name":"Annales De Biologie Animale Biochimie Biophysique","volume":"24 1","pages":"1713-1723"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81588480","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: 57

Regulation of meiosis in mammals 哺乳动物减数分裂的调控

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790809

A. Byskov

{"title":"Regulation of meiosis in mammals","authors":"A. Byskov","doi":"10.1051/RND:19790809","DOIUrl":"https://doi.org/10.1051/RND:19790809","url":null,"abstract":"Culture media which contain either substances that can induce meiosis (meiosis-inducing substances, MIS) or prevent meiosis (meiosis-preventing substances, MPS) can be obtained from different experiments. MIS is present in culture media in which tissues of ovaries with germ cells in meiosis, or fetal epididymis, or puberal epididymis and testes, have grown. MIS is apparently species-nonspecific since media containing MIS obtained from puberal bulls induce meiosis in indifferent fetal mouse testes. MPS is secreted into the culture media of minced fetal mouse testes. Meiosis si prevented or greatly inhibited in fetal mouse ovaries, when they are cultured in such media. It was concluded that MIS was present in mesonephric derived tissues in gonads in which meiosis occurred. Moreover, MPS within the testicular tissue (within the testicular cords ?) might participate in preventing meiosis in the fetal testis. However, a negative « MIS-activity-test » result was obtained in an experiment with rabbit gonads : meiosis was not induced in fetal gonads by infant ovarian tissue containing germ cells in meiosis. This led to comparative investigations of gonads from species in which the onset of meiosis and gonadal sex differentiation coincide in time, « simultaneous meiosis », and those, like the rabbit, in which the onset of meiosis in the female is delayed,","PeriodicalId":7885,"journal":{"name":"Annales De Biologie Animale Biochimie Biophysique","volume":"2 1","pages":"1251-1261"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89520699","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: 74

Variable development of superovulated bovine embryos between day 6 and day 12 牛超排卵胚胎在第6天至第12天的不同发育

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790920

J. Renard, Y. Heyman

{"title":"Variable development of superovulated bovine embryos between day 6 and day 12","authors":"J. Renard, Y. Heyman","doi":"10.1051/RND:19790920","DOIUrl":"https://doi.org/10.1051/RND:19790920","url":null,"abstract":"The relations between the morphological aspect of superovulated embryos at a given day of recovery and their viability in vitro were studied in order to compose a test for estimating embryo quality. The observation of 994 embryos produced by 100 donors showed that at each day of recovery, from D 6 to D 10, the embryos were distributed into at least four classes according to morphological aspect. At D 11 and D 12 more than 95 p.100 of them were divided into only two classes : abnormal and hatched blastocysts. When they were in the zona pellucida on the day of recovery, 60 p. 100 or more of the apparently normal embryos hatched after culture in vitro. 26 p. 100 or less hatched in vitro when development was apparently retarded, and none of those having an abnormal aspect, according to our criteria, hatched. When they were already hatched from the zona pellucida at recovery, 80 p. 100 of the embryos showed an increase in size after 24 hrs. of culture in vitro. The percentage of normal embryos decreased from D 6 to D 7, and then remained stable until at least D 10. The percentage of retarded embryos increased from D 6 to D 7 and then decreased. A few retarded embryos were visible at days 11 and 12. The percentage of degenerate embryos increased from D 7 to D 8 and remained stable afterwards. The proportion of donors with more than 50 p. 100 of degenerate embryos increased from D 6 to D 12. The relation with development in vivo after transplantation has been discussed.","PeriodicalId":7885,"journal":{"name":"Annales De Biologie Animale Biochimie Biophysique","volume":"31 1","pages":"1589-1598"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89531419","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: 34

Sertoli cell ultrastructure. II. Morphological effects of hypophysectomy in pubescent pigs 支持细胞超微结构。2垂体切除术对短毛猪的形态学影响

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790504

M. Chevalier

{"title":"Sertoli cell ultrastructure. II. Morphological effects of hypophysectomy in pubescent pigs","authors":"M. Chevalier","doi":"10.1051/RND:19790504","DOIUrl":"https://doi.org/10.1051/RND:19790504","url":null,"abstract":"Summary. As in normal animals, the Sertoli cell population in pubescent pigs was composed of two morphological cell types : numerous cells with a light nucleus (type A) and some small cells with a dark nucleus (type B). This report studies the transformations occurring in this population during the 4 months following hypophysectomy. The various cellular components had different rhythms of modification ; no general, continuous involution of the components was observed. The nucleolar complex appearing in the nucleus was composed of three elements and persisted during the whole period studied. The majo-rity of A-cell cytoplasmic components disappeared during the post-operative period, except for some lysosomes which developed and the Golgi apparatus which persisted. The cellular junctions between Sertoli cells and those facing the remaining germ cells were unmodified. Three or 4 months after hypophysectomy, the whole of the membranous and ribosomal systems was reorganized and developed. Microtubules and microfilaments gradually disappeared. In some cases the specialized inter-Sertoli cell junctions lost their microfilamentary component. The B-cells had an extremely condensed aspect 1 month after hypophysectomy. Three or 4 months after the operation, cytoplasmic ramifications and the presence of numerous ribosomes apparently indicated a change in B-cell metabolism. The microfilaments disappeared gradually. In both cell types, the large lipid droplet persisted ; it was always found against the nucleus and often in a basal position.","PeriodicalId":7885,"journal":{"name":"Annales De Biologie Animale Biochimie Biophysique","volume":"62 1","pages":"583-596"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90466186","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: 7

L'organe pinéal du Brochet (Esox lucius, L.). I. Etude anatomique et cytologique 梭子鱼(Esox lucius, L.)的松果体。一、解剖和细胞学研究

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790313

J. Falcon

引用次数: 25

Dosage des strognes libres et conjugus dans le plasma priphrique de vache cyclique 循环牛卵黄血浆中游离雌激素和共轭雌激素的测定

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19791006

A. López-Sebastián, J. De

引用次数: 7

Colostrum de vache : composition minrale et activit de la phosphatase alcaline 乳牛初乳:组成、微量成分和碱性磷酸酶活性

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790302

G. Linden, B. Maraval

引用次数: 5

Etude in vivo chez le rat de l'influence du glucose et du fructose sur le métabolisme intestinal et hépatique 葡萄糖和果糖对大鼠肠道和肝脏代谢影响的体内研究

Annales De Biologie Animale Biochimie Biophysique Pub Date : 1979-01-01 DOI: 10.1051/RND:19790603

E. Gueux, C. Demigné, C. Rémésy

{"title":"Etude in vivo chez le rat de l'influence du glucose et du fructose sur le métabolisme intestinal et hépatique","authors":"E. Gueux, C. Demigné, C. Rémésy","doi":"10.1051/RND:19790603","DOIUrl":"https://doi.org/10.1051/RND:19790603","url":null,"abstract":"Summary. Influence of glucose and fructose on intestinal and hepatic metabolism in the rat in vivo. Intestinal and hepatic metabolism has been studied in rats fed 12-day diets comprising 74 p. 100 of either glucose or fructose. Food was available during 8 hrs, and tissue was sampled on anesthetized animals 6 hrs after the beginning of food intake. In the digestive tract, fructose was poorly converted into glucose (less than 10 p. 100), and enterocyte lactate production was similar with both hexoses, representing less than 10 p. 100 of the absorbed carbohydrates. About 50 p. 100 of the absorbed glucose was taken up by the liver, as against more than 90 p. 100 of the fructose. Considering the transformation of fructose into glucose, the hepatic carbohydrate balance was very similar with the two diets in our sampling condi- tions. Decreased liver uptake of lactate accounted for the increased lactataemia with the fructose diet. This fact was possibly due to an increase of hepatic triose phosphate and pyru- vate production, as fructose was mainly utilized in the fructose-1 phosphate pathway. Depletion of the hepatic ATP, induced by acute administration of fructose, was not observed in our adapted rats. As glycogen storage was more rapid with the fructose diet, triglyceride synthesis (an alternative pathway for the utilization of carbohydrates) certainly increased. This fact could account for the higher plasma triglycerides with the fructose diet, possibly associated with a lower response to the circulating insulin.","PeriodicalId":7885,"journal":{"name":"Annales De Biologie Animale Biochimie Biophysique","volume":"31 1","pages":"715-721"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80617955","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: 3