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Acta morphologica Academiae Scientiarum Hungaricae最新文献

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The overlapping effects of thyrotropin and gonadotropins on chick embryo gonads in vitro. 促甲状腺激素和促性腺激素对鸡胚性腺的重叠作用。
Acta morphologica Academiae Scientiarum Hungaricae Pub Date : 1982-01-01
M A Shahin, O Török, G Csaba
{"title":"The overlapping effects of thyrotropin and gonadotropins on chick embryo gonads in vitro.","authors":"M A Shahin,&nbsp;O Török,&nbsp;G Csaba","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Pieces of 12- and 15-day-old chick embryo testes and ovaries were cultured in vitro in the presence of thyrotropin (TSH), gonadotropins (FSH + LH) and adrenocorticotropin (ACTH) for different periods. All the explants of treated gonads differentiated into typical testes or ovaries according to their genetic sex. The gonads of 12-and 15-day-old chick embryos showed a good response to both thyrotropic and gonadotropic stimulation. On the other hand, they did not respond to adrenocorticotropic stimulation. Fifteen-day-old chick embryo testes were grown in tissue culture in the presence of the said hormones. Gonadotropins and TSH enhanced the growth and migration of testicular cells as compared with the control or ACTH treated group. In addition, they maintained the germ cells on the upper surface of epithelial cells. These results have confirmed our previous results in vivo in that gonadotropins and thyrotropin hormones accelerated the development of 12- or 15-day-old chick embryo gonads.</p>","PeriodicalId":72058,"journal":{"name":"Acta morphologica Academiae Scientiarum Hungaricae","volume":"30 2","pages":"109-25"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17361149","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
Cartilage differentiation in micro-mass cultures of chicken limb buds. 鸡肢体芽微块培养中软骨分化的研究。
Acta morphologica Academiae Scientiarum Hungaricae Pub Date : 1982-01-01
C Hadházy, M B Lázló, K S Kostenszky
{"title":"Cartilage differentiation in micro-mass cultures of chicken limb buds.","authors":"C Hadházy,&nbsp;M B Lázló,&nbsp;K S Kostenszky","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In micro-mass cultures of stage 23-24 chicken embryos the expression of cartilage phenotype was density dependent and it always took place practically to the same extent at the density of 2 X 10(5) cells per culture. The cells formed aggregates on day 1 and cartilage nodules appeared on day 2. By day 3, 17% of the culture surface consisted of areas showing cartilage differentiation and these regions represented more than 50% on day 6. By day 14, the centre of th cultures contained a mass of cartilage. The progression of cartilage differentiation was indicated by the increasing amount of toluidine blue fixed by the cultures. By day 14 the DNA and protein contents increased 8.7 fold and 16.7 fold, respectively. Uronic acid and OH-proline were detected from the 2nd day. From day 3 to 14, the microgram uronic acid and microgram OH-proline per microgram DNA gradually increased 25 fold and 14 fold, respectively. A decreased density of the inoculum reduced the probability of cartilage formation and it failed to occur at the density of 1.25 X 10(4) cells per culture. Stage 19-20 limb cultures with identical density had the same morphological characteristics. Aggregates appeared but nodules failed to do so in cell cultures of stage 28 limb bud soft tissue region. It is supposed that an oxygen gradient may be present in the cell aggregates.</p>","PeriodicalId":72058,"journal":{"name":"Acta morphologica Academiae Scientiarum Hungaricae","volume":"30 1","pages":"65-78"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17859218","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
Demonstration of rhodanese enzyme activity in bone tissue. 骨组织中罗丹斯酶活性的证明。
Acta morphologica Academiae Scientiarum Hungaricae Pub Date : 1982-01-01
M Bély, D Tanka
{"title":"Demonstration of rhodanese enzyme activity in bone tissue.","authors":"M Bély,&nbsp;D Tanka","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The activity of rhodanese enzyme was studied histochemically in the cells of bone tissue of various ages and in various states of differentiation, and in chondroid and epiphyseal cartilage tissue. Enzyme activity was higher in the preexisting, differentiated laminar bone tissue of young animals than in that of old animals, and higher in newly formed woven bone than in the preexisting lamellar one and higher in chondroid tissue and in epiphyseal cartilage than in the woven bone and chondroid tissue. These differences are thought to reflect differences in metabolic intensity of the different structures.</p>","PeriodicalId":72058,"journal":{"name":"Acta morphologica Academiae Scientiarum Hungaricae","volume":"30 1","pages":"49-55"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18003876","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
Effect of capsaicin on the nerve elements of the small intestine. 辣椒素对小肠神经成分的影响。
Acta morphologica Academiae Scientiarum Hungaricae Pub Date : 1982-01-01
E Fehér, J Vajda
{"title":"Effect of capsaicin on the nerve elements of the small intestine.","authors":"E Fehér,&nbsp;J Vajda","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The effect of capsaicin treatment on the nerve elements of the small intestine has been investigated in newborn cats. Degeneration of numerous nerve processes could be observed after capsaicin treatment. Some of these nerve fibres were found in pre- and in postsynaptic situation. A few cell somata were also severely damaged after capsaicin treatment. No such degeneration was observed in the control animals. On the basis of the capsaicin effect is assumed that some of the degenerated nerve terminals might be responsible for the intrinsic sensory innervation of the small intestine.</p>","PeriodicalId":72058,"journal":{"name":"Acta morphologica Academiae Scientiarum Hungaricae","volume":" ","pages":"57-63"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35263198","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
Embryonic development of the mandibular canal. 下颌管的胚胎发育。
Acta morphologica Academiae Scientiarum Hungaricae Pub Date : 1982-01-01
E Bollobás
{"title":"Embryonic development of the mandibular canal.","authors":"E Bollobás","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>On the basis of examination of 50 fetal mandibles, development of the mandibular canal is described. The development of the foramen mandibulae, foramen mentale, the lingula, the alveolar process, and the morphological changes in the mandible due to the effect of the development of the mandibular canal are discussed. The anatomical conditions examined may also have clinical implications.</p>","PeriodicalId":72058,"journal":{"name":"Acta morphologica Academiae Scientiarum Hungaricae","volume":"30 3-4","pages":"233-9"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18183682","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
Experimental studies in transient myocardial ischaemia. 短暂性心肌缺血的实验研究。
Acta morphologica Academiae Scientiarum Hungaricae Pub Date : 1982-01-01
D Laky, S Constantinescu, G Filipescu, N M Constantinescu, E Ratea, F Halalau
{"title":"Experimental studies in transient myocardial ischaemia.","authors":"D Laky,&nbsp;S Constantinescu,&nbsp;G Filipescu,&nbsp;N M Constantinescu,&nbsp;E Ratea,&nbsp;F Halalau","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The biology of the myocardium was studied under experimental conditions similar to angina pectoris. In some dogs the myocardium was adapted to ischaemia by progressive coronary occlusion of 1-5 min followed by restoration of circulation during 5 min. In other dogs adaption was followed by 20 to 35 min ischaemia. The animals were sacrificed immediately or after 2-10 days. Transient ischaemia produced less severe alterations then abrupt coronary obstruction. Adaptation followed by 20 and 35 min ischaemia induced foci that undergo cytolysis and scarring of maximum intensity on the 8th day. Activity of enzymes in the mitochondrial suspension, especially of cytochromoxidase, decreases and lysosomal hydrolases increase with focal necroses.</p>","PeriodicalId":72058,"journal":{"name":"Acta morphologica Academiae Scientiarum Hungaricae","volume":"30 3-4","pages":"299-307"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17363187","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
Effect of antiandrogens and medroxyprogesterone acetate on testicular morphometry in mice. 抗雄激素和醋酸甲孕酮对小鼠睾丸形态的影响。
Acta morphologica Academiae Scientiarum Hungaricae Pub Date : 1982-01-01
E Umapathy, U C Rai
{"title":"Effect of antiandrogens and medroxyprogesterone acetate on testicular morphometry in mice.","authors":"E Umapathy,&nbsp;U C Rai","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Administration to albino mice of cyproterone (C), cyproterone acetate (CA) and medroxyprogesterone acetate (MPA) for one week produced a marked decrease in volume, surface area and length of the seminiferous tubules besides inhibiting spermatogenesis. This response was elicited by all the three treatments but was assessed as mild in \"C\", moderate in \"MPA\" and severe in \"CA\" groups. On the basis of present work it is concluded that inhibition of spermatogenesis occurred even with low dose schedule of the two antiandrogens and MPA. The possible mechanism of action has been discussed in the light of available literature.</p>","PeriodicalId":72058,"journal":{"name":"Acta morphologica Academiae Scientiarum Hungaricae","volume":"30 2","pages":"99-108"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17283832","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
Distribution of primary sensory nerve terminals in the cat urinary bladder wall. 猫膀胱壁主要感觉神经末梢的分布。
Acta morphologica Academiae Scientiarum Hungaricae Pub Date : 1982-01-01
E Fehér, E Hosszú, J Vajda
{"title":"Distribution of primary sensory nerve terminals in the cat urinary bladder wall.","authors":"E Fehér,&nbsp;E Hosszú,&nbsp;J Vajda","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Distribution of the primary sensory nerve terminals has been investigated in the cat urinary bladder wall in the normal state and after extirpation of certain spinal ganglia. In the normal state the adventitia of the bladder base contained simple sensory corpuscles, Pacinian corpuscles and free nerve endings. In the bladder wall the afferent nerve endings appeared to be free nerve endings without terminal modification. After extirpation of spinal ganglia, some of the nerve fibres degenerated and were located mostly in the trigone and the ventral neck regions of the bladder. After 7 days neither Pacinian nor simple sensory nerve corpuscles could be observed in the wall.</p>","PeriodicalId":72058,"journal":{"name":"Acta morphologica Academiae Scientiarum Hungaricae","volume":"30 3-4","pages":"223-32"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18183681","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
Innervation of the alimentary tract in Chondrostean fish (Acipenseridae). A histochemical, microspectro-fluorimetric and ultrastructural study. 软骨鱼消化道的神经支配。组织化学，显微荧光和超微结构研究。
Acta morphologica Academiae Scientiarum Hungaricae Pub Date : 1982-01-01
N Salimova, E Fehér
{"title":"Innervation of the alimentary tract in Chondrostean fish (Acipenseridae). A histochemical, microspectro-fluorimetric and ultrastructural study.","authors":"N Salimova,&nbsp;E Fehér","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In the enteric nervous system of Chondrostean fish, green and yellow fluorescent nerve fibers were revealed by the glyoxylic acid histochemical method. The yellow fluorescent fibres were found in the circular muscle layer and the green ones in the longitudinal layer and between the two muscle layers. Strongly fluorescent enterochromaffin cells were observed in all parts of the alimentary tube in the epithelium of the mucosa. Yellow fluorescent nerve fibres and enterochromaffin cells showed the peak emission at 520-525 nm, which corresponds to that of serotonin fluorophore in a model system. Green fluorescent nerve fibres had their emission maximum at 460-470 nm, which corresponds to that of dopamine and noradrenaline. According to the vesicular population, different nerve fibres were observed in all parts of the alimentary tube under the electron microscope.</p>","PeriodicalId":72058,"journal":{"name":"Acta morphologica Academiae Scientiarum Hungaricae","volume":"30 3-4","pages":"213-22"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18183680","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
Cytochemical characterization of hepatitis B virus infected liver cells in chronic liver diseases. 慢性肝病患者乙型肝炎病毒感染肝细胞的细胞化学特征
Acta morphologica Academiae Scientiarum Hungaricae Pub Date : 1981-01-01
M Bencsáth, Z Schaff, K Lapis, S Keresztúry, Z Kolláth, M Hérics, I Hollós
{"title":"Cytochemical characterization of hepatitis B virus infected liver cells in chronic liver diseases.","authors":"M Bencsáth,&nbsp;Z Schaff,&nbsp;K Lapis,&nbsp;S Keresztúry,&nbsp;Z Kolláth,&nbsp;M Hérics,&nbsp;I Hollós","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The cytochemical characteristics of the hepatitis B virus (HBV) components, the nuclei and cytoplasm of the infected cells were studied in liver needle biopsy material obtained from patients suffering from serologically HBsAg positive chronic hepatitis. The HBV surface and core components were found to be more resistant to proteolytic enzymes and phospholipase than the other cellular components, and only combined digestion was effective. With preferential RNP and specific DNP staining the accumulation of granules 10-20 nm and 20-40 nm in diameter could be observed in the liver cell nuclei. The cytochemical-morphological polymorphism of the latter was well detectable. Part of the granules corresponded to accumulated perichromatin granules. It is assumed that the groups of granules 20-40 nm in diameter, showing a varying density on DNP staining, similar to the chromatin on RNP staining, and not surrounded by a peripheral area represents one of the forms of appearance of the HB virus core component.</p>","PeriodicalId":72058,"journal":{"name":"Acta morphologica Academiae Scientiarum Hungaricae","volume":"29 2-3","pages":"241-50"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18328510","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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