Archives d'anatomie microscopique et de morphologie experimentale最新文献

On the non-equivalence of skeletal muscle satellite cells and embryonic myoblasts. 骨骼肌卫星细胞与胚胎成肌细胞的不等同性。

Archives d'anatomie microscopique et de morphologie experimentale Pub Date : 1986-01-01

A Chevallier, M P Pautou, A J Harris, M Kieny

引用次数: 0

On the distributive pattern of acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) in the medulla oblongata of the golden hamster (Mesocricetus auratus). A study on the topographical and functional linkages of the two enzymes. 乙酰胆碱酯酶(AChE)和丁基胆碱酯酶(BChE)在金仓鼠延髓内的分布规律。两种酶的地形和功能联系的研究。

Archives d'anatomie microscopique et de morphologie experimentale Pub Date : 1986-01-01

S Parveen, H B Tewari

{"title":"On the distributive pattern of acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) in the medulla oblongata of the golden hamster (Mesocricetus auratus). A study on the topographical and functional linkages of the two enzymes.","authors":"S Parveen, H B Tewari","doi":"","DOIUrl":"","url":null,"abstract":"Histochemical study on the distributive patterns of acetylcholinesterase (AChE) and butyrylcholinesterase (BChE), amongst the constituents of the medulla oblongata of golden hamster (Mesocricetus auratus), viewed through the angle of the possible topographical and functional linkage of the two enzymes, have provided identical set-ups of AChE and BChE in many of the nuclei, fibers and tracts. In the case of AChE in many instances the results further point out that there is a balance of the enzymatic activity between the nuclei and the associated processes. On the other hand, in relation to BChE activity, the nuclei and their processes do not seem to be linked through such a histochemical factor. A detailed discussion on the significance of AChE relationship between the neurons and their processes from the functional point of view, against the data available in the literature, has been incorporated in the present study. Histoenzymologically, the ranges of the activities of AChE and BChE amongst the neurons and their processes are so closely related that such components are mirror images of each other in histochemical patterns. Naturally, such results have led to a detailed discussion in the contribution culminating in a proposition that AChE and BChE (amongst the locales studied) seems to be intimately linked in the neuro-physiological functioning undergoing in the regions of the medulla oblongata of golden hamster.","PeriodicalId":75532,"journal":{"name":"Archives d'anatomie microscopique et de morphologie experimentale","volume":"75 1","pages":"45-59"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14906496","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

On the presence of high glycogen concentration and intermediate filaments in the flat cells of the electroreceptive epidermis of mormyrid fish. mormyrid鱼电感受表皮扁平细胞中高糖原浓度和中间丝的存在。

Archives d'anatomie microscopique et de morphologie experimentale Pub Date : 1986-01-01

J P Denizot

{"title":"On the presence of high glycogen concentration and intermediate filaments in the flat cells of the electroreceptive epidermis of mormyrid fish.","authors":"J P Denizot","doi":"","DOIUrl":"","url":null,"abstract":"The cytoplasm of the flat cells of the electroreceptive epidermis of Mormyrids was examined in the light and the electron microscope, in order to reveal the presence of glycogen and to study its distribution. In the electroreceptive epidermis, which consists of three layers, the periodic acid Schiff reaction used to stain polysaccharides is strongly positive in the superficial polyhedral cells and in the flat cells of the intermediate layer. Polysaccharides are absent in the basal polyhedral cells. Pre-incubation with alpha-amylase shows that glycogen is present only in the intermediate cell layer. In the electron microscope, after reaction with periodic acid, thiocarbohydrazide and silver proteinate, glycogen is seen in the form of rosettes of monoparticles. These rosettes occupy both the central region of the cytoplasm of these cells, and the more peripheral parts, where alignments of desmosomes are found. In the cytoplasm of certain flat cells, the rosettes are grouped to form accumulations of glycogen which cover several mu2. Observation in the electron microscope reveals that in addition to glycogen, these cells contain tonofilaments or intermediate filaments, common to epithelial cells, which may group themselves in bundles. Glycogen and the intermediate filaments are thus the principal constituents of the cytoplasm of the flat cells of the electroreceptive epidermis of Mormyrids. The possible role of the filaments, and especially of the glycogen which is a polysaccharide high in energy, in the flat cells which apparently have a low metabolic rate, is discussed.","PeriodicalId":75532,"journal":{"name":"Archives d'anatomie microscopique et de morphologie experimentale","volume":"75 4","pages":"253-61"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14565502","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

Epithelial-mesenchymal interactions: effects of a dental biomatrix on odontoblasts. 上皮-间充质相互作用:牙生物基质对成牙细胞的影响。

Archives d'anatomie microscopique et de morphologie experimentale Pub Date : 1986-01-01

Y Cam, J M Meyer, A Staubli, J V Ruch

{"title":"Epithelial-mesenchymal interactions: effects of a dental biomatrix on odontoblasts.","authors":"Y Cam, J M Meyer, A Staubli, J V Ruch","doi":"","DOIUrl":"","url":null,"abstract":"The functional differentiation of odontoblasts requires specific interactions between these cells and the extracellular matrix. To further analyze these phenomena we studied the effects of a \"dental papillae biomatrix\" on isolated dental papillae cultured in vitro. The dental papillae biomatrix was extracted from EDTA-dissociated day-18 mouse dental papillae by homogenization, NaCl and enzymatic treatments, and deposited on Millipore filters. This biomatrix was studied by means of transmission electron microscopy and indirect immunofluorescence: it contained collagen fibrils, type IV collagen, fibronectin and laminin; cellular residues were also observed. The dental papillae were isolated by trypsin treatment of homologous tooth germs and cultured on uncoated (control) and coated filters. As shown by histological and cytological data, odontoblast-like cells never differentiated in control cultures. In presence of biomatrix and serum, polarized functional cells were observed. The functional state of these cells was enhanced by the addition of ascorbic acid to the culture media. Study of the incorporation of 3H-proline in cultured dental papillae and in macromolecules secreted into the culture media corroborated the morphological findings.","PeriodicalId":75532,"journal":{"name":"Archives d'anatomie microscopique et de morphologie experimentale","volume":"75 2","pages":"75-89"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14670729","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

[Organophosphorus compounds as tools for the pharmaco-histochemical study of cholinesterase in the rat striatum]. [有机磷化合物作为大鼠纹状体胆碱酯酶药物组织化学研究的工具]。

Archives d'anatomie microscopique et de morphologie experimentale Pub Date : 1986-01-01

I S Delamanche, P Mailly, C Bouchaud

{"title":"[Organophosphorus compounds as tools for the pharmaco-histochemical study of cholinesterase in the rat striatum].","authors":"I S Delamanche, P Mailly, C Bouchaud","doi":"","DOIUrl":"","url":null,"abstract":"A series of organophosphorous compounds (OP) was tested using a pharmacohistochemical method applied in vitro on the rat striatum, the central structure which contains the highest levels of acetylcholine and its metabolic enzymes; the OP showed a great variety of action towards the specific cholinesterase (AChE) and non-specific cholinesterase (BuChE). Except for iso-OMPA which is specific for BuChE localized in the microvessels endothelium, all the OP doses used in the present study were more or less potent inhibitors of cholinesterases (ChE). 15 mn after LD 50 doses of OP administered by subcutaneous route, a partial inhibition of the neurophile AChE occurred, revealing some striatal neurons which displayed high residual activity, i.e. the cholinergic interneurons. During the recovery phase following the inhibition of AChE by 1.5 LD 50 doses (the animals being treated with atropine) the AChE reaction product was detected almost simultaneously in some axo-spinous synapses probably non-cholinergic. The partial inhibition and the de novo synthesis of AChE also revealed the presence of small and less reactive non-cholinergic neurons. Among all the OP tested, soman was remarkable for its patchy inhibition of AChE in the striatum. The significance of the alternation of reactive and non-reactive areas is discussed.","PeriodicalId":75532,"journal":{"name":"Archives d'anatomie microscopique et de morphologie experimentale","volume":"75 3","pages":"135-48"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14752539","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

Meiosis-inducing and meiosis-preventing effects of sex steroid hormones on hamster fetal ovaries in organ culture. 性激素对器官培养中仓鼠胎儿卵巢减数分裂的诱导和阻止作用。

Archives d'anatomie microscopique et de morphologie experimentale Pub Date : 1986-01-01

P Angelova, J Jordanov

{"title":"Meiosis-inducing and meiosis-preventing effects of sex steroid hormones on hamster fetal ovaries in organ culture.","authors":"P Angelova, J Jordanov","doi":"","DOIUrl":"","url":null,"abstract":"Day 11 to day 15 p.c. female gonads were cultured for 6-8 days in chemically-defined media. In day 11 and day 12 p.c. ovaries grown in a non-hormonal medium, the germ cells were unable to enter meiosis; they were retained at a stage of oogonia or more frequently at a preleptotene stage. Ovaries of the same ages cultured in an estradiol-containing medium showed germ cells progressing through meiotic prophase in a way close to that in ovaries of equivalent age in vivo. That was the case of the germ cells in day 13 to day 15 p.c. ovaries maintained in a non-hormonal medium. In a testosterone-containing medium, the germ cells in day 13 and day 14 p.c. ovaries were prevented from entering meiosis; by contrast, those in day 15 p.c. ovaries underwent meiotic prophase normally. These results indicated that each of both hormones was able to exert its corresponding (meiosis-inducing or meiosis-preventing) effect before a definite critical time of ovarian development. The possibility is suggested that the germ cell differentiation in the female and male gonads in vivo would also depend on estrogens or androgens precociously synthesized in the gonads or supplied from other organs via the fetal blood.","PeriodicalId":75532,"journal":{"name":"Archives d'anatomie microscopique et de morphologie experimentale","volume":"75 3","pages":"149-59"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14752540","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

The lingual (root analogue) and the labial (crown analogue) mouse incisor dentin promotes ameloblast differentiation. 舌牙本质(类似根)和唇牙本质(类似冠)促进成釉细胞分化。

Archives d'anatomie microscopique et de morphologie experimentale Pub Date : 1986-01-01

S Amar, V Karcher-Djuricic, J M Meyer, J V Ruch

引用次数: 0

A comparative and quantitative study of small intensely fluorescent (SIF) cells in the sympathetic ganglia of some small mammals. 一些小型哺乳动物交感神经节小强荧光(SIF)细胞的比较定量研究。

Archives d'anatomie microscopique et de morphologie experimentale Pub Date : 1986-01-01

A Madariaga-Domich, J Taxi

{"title":"A comparative and quantitative study of small intensely fluorescent (SIF) cells in the sympathetic ganglia of some small mammals.","authors":"A Madariaga-Domich, J Taxi","doi":"","DOIUrl":"","url":null,"abstract":"This comparative study of the number of SIF cells in the ganglions of the rat, cat, rabbit, mouse and hamster has confirmed that the mean number of SIF cells in the same ganglion of different species varies greatly, for instance in the superior cervical ganglion (SCG) of the rat and the cat, in the stellate ganglion of the cat and the mouse, or in the inferior mesenteric ganglion of the hamster and the other species. There is also considerable variability among individuals of the same animal species. In the SCG, the only ganglion for which there are data on the number of neurons, the ratio of SIF cells to neurons is around 1% in the rat, 0.2% in the rabbit, 0.3% in the mouse and 0.05% in the cat, i.e. a twenty-fold difference between the cat and the rat. Williams et al. (1975) distinguished type 1 SIF cells, corresponding to interneurons, from type 2, which are purely endocrine cells. Type 2 appears to be predominant in all ganglia, except the rabbit SCG where type 1 is highly predominant, and in all species, except the rat, in which this distinction is not applicable. The possible implications of these data on ganglionic functioning are discussed.","PeriodicalId":75532,"journal":{"name":"Archives d'anatomie microscopique et de morphologie experimentale","volume":"75 1","pages":"1-17"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14906497","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

[Testicular graft on the chick embryo]. [鸡胚胎上的睾丸移植]。

Archives d'anatomie microscopique et de morphologie experimentale Pub Date : 1986-01-01

J P Weniger, A Zeis

引用次数: 0

Course and termination of the pyramidal tract in the pig. 猪锥体束的走向和终止。

Archives d'anatomie microscopique et de morphologie experimentale Pub Date : 1986-01-01

G Palmieri, V Farina, R Panu, A Asole, L Sanna, P L De Riu, C Gabbi

引用次数: 0