Archivio italiano di anatomia e di embriologia. Italian journal of anatomy and embryology最新文献_第6页

[Ultrastructure of the myocardial junctions of the chick embryo at an early stage in the organogenesis of the heart]. [心脏器官发生早期鸡胚心肌连接的超微结构]。

Archivio italiano di anatomia e di embriologia. Italian journal of anatomy and embryology Pub Date : 1989-10-01

L Mancini, M Bertossi, E Lozupone, B Nico, L Roncali

{"title":"[Ultrastructure of the myocardial junctions of the chick embryo at an early stage in the organogenesis of the heart].","authors":"L Mancini, M Bertossi, E Lozupone, B Nico, L Roncali","doi":"","DOIUrl":"","url":null,"abstract":"The ultrastructural features of the myocardiocyte junctional systems have been studied in the heart right myocardium of 6 day chick embryos in order to analyze the relationships between the spatial arrangement of the myocardial fibres and the formation of the myocardiocyte junctions. The myocardiocytes are remarkably branched, joined in small fibres to form a loose network with large intercellular spaces and appear well differentiated, rich in organelles, myofibrils and glycogen. Adherent-type junctions and well differentiated desmosomes are detectable at the level of the termino-terminal contacts between myocardiocytes, where the plasma membranes appear more or less complicately interconnected; nexus-type junctions are seen in the latero-lateral contact regions. The results indicate that already at an early stage of the heart organogenesis the myocardium intercellular junctions are similar, on the whole, to those described in the adult, so that they would not seem to be transitory or modifiable structures. The changes in the spatial orientation of the myocardial fibres, which take place after the 6th incubation day, could be allowed by the network-like arrangement of the primitive myocardium and presumably conditioned by the blood flow in the developing heart.","PeriodicalId":75549,"journal":{"name":"Archivio italiano di anatomia e di embriologia. Italian journal of anatomy and embryology","volume":"94 4","pages":"425-36"},"PeriodicalIF":0.0,"publicationDate":"1989-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13783651","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

Localization of transferrin receptors (TFRs) in human non functioning thyroid nodules and in extranodular thyroid tissue. 转铁蛋白受体(TFRs)在人类无功能甲状腺结节和结节外甲状腺组织中的定位。

Archivio italiano di anatomia e di embriologia. Italian journal of anatomy and embryology Pub Date : 1989-07-01

G C Balboni, T Barni, M Serio, U Modigliani, I Paulin, F Repice, G B Vannelli

{"title":"Localization of transferrin receptors (TFRs) in human non functioning thyroid nodules and in extranodular thyroid tissue.","authors":"G C Balboni, T Barni, M Serio, U Modigliani, I Paulin, F Repice, G B Vannelli","doi":"","DOIUrl":"","url":null,"abstract":"In this research the TFR localization in non functioning human thyroid nodules and in the extranodular thyroid tissue, using an immunohistochemical technique, has been studied. For this study a monoclonal antibody (B3/25) against TFR and the peroxidase technique have been utilized. Moreover a morphometric comparative analysis was carried out based on the following parameters: 1) mean immunoreactive area for microscopic field, 2) mean value of immunoreactive follicular perimeter, 3) integrated optical density, 4) % of immunoreactive area on total examined area in nodular and extranodular tissue. The immunoreactivity was detected in some follicular cells in a number of follicles randomly distributed in the extra nodular tissue. As concern the non functioning thyroid nodules, the positivity was localized in the generality of the follicles both in the flattened epithelial cells of the larger follicles and in the cuboidal cells of the smaller ones. The morphometric parameters confirm a statistically significant difference of immunoreactivity between extranodular and nodular tissue. These results suggest that TF might play a role in the cellular proliferation of thyroid gland.","PeriodicalId":75549,"journal":{"name":"Archivio italiano di anatomia e di embriologia. Italian journal of anatomy and embryology","volume":"94 3","pages":"217-26"},"PeriodicalIF":0.0,"publicationDate":"1989-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13777650","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 fundamental works of G. Conti on the subject of male impotence]. [G. Conti关于男性阳痿的基本著作]。

Archivio italiano di anatomia e di embriologia. Italian journal of anatomy and embryology Pub Date : 1989-07-01

P Jichlinski, W von Niederhäusern

引用次数: 0

[Vascular networks of the extensor tendons of the fingers]. [手指伸肌腱的血管网]。

Archivio italiano di anatomia e di embriologia. Italian journal of anatomy and embryology Pub Date : 1989-07-01

S Gajisin, A Zbrodowski

引用次数: 0

Increasing potentiality in N.G.F. treated PC12 cells. ngf处理的PC12细胞电位升高。

Archivio italiano di anatomia e di embriologia. Italian journal of anatomy and embryology Pub Date : 1989-07-01

S M Peirone, M R Amedeo, G Filogamo

{"title":"Increasing potentiality in N.G.F. treated PC12 cells.","authors":"S M Peirone, M R Amedeo, G Filogamo","doi":"","DOIUrl":"","url":null,"abstract":"Somites from 9H. H. chick embryos and PC12 cells were co-cultivated in synthetic medium containing N.G.F., which induces the transformation of PC12 cells into neuron-like cells. During the first two days of culture, PC12 cells retained the spherical shape and tended to cluster. Somitic mesoderm cells exhibited a fibroblastic aspect. By the third day, PC12 cells extended long processes resembling nerve fibres which surrounded and penetrated the mesodermic explants. On the 10th day of culture, contractions, limited at first to a few cells were perceptible. Later, the contractions involved large cellular masses. Microscopic observations at 10 days revealed the presence of an increasing number of fusiform mononucleated cells. Later, long and narrow multinucleated elements appeared. Such elements never developed from cultures of only somites. Immunohistochemical observations revealed a desmin positivity in both mononucleated and multinucleated elements characterizing them as myogenic cells that are formed in and because of the presence of PC12 cells which were transformed by N.G.F. into nerve cells. After 10 days of culture, PC12 cells positive to antiserum antidesmin were noted. Desmin positivity of PC12 cells leads to the conclusion that newly-formed muscle cells exert an induction on Pheocromocytoma cells which, as derivatives of the neural crest, have a greater multipotentiality.","PeriodicalId":75549,"journal":{"name":"Archivio italiano di anatomia e di embriologia. Italian journal of anatomy and embryology","volume":"94 3","pages":"289-99"},"PeriodicalIF":0.0,"publicationDate":"1989-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13778252","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

Cranial morphogenesis. 颅骨形态发生。

Archivio italiano di anatomia e di embriologia. Italian journal of anatomy and embryology Pub Date : 1989-07-01

J Schowing

引用次数: 0

[Anatomical interpretation of arterial anomalies]. 【动脉异常的解剖学解释】。

Archivio italiano di anatomia e di embriologia. Italian journal of anatomy and embryology Pub Date : 1989-07-01

E Stolić

引用次数: 0

The vaginal surface epithelium during postnatal development in gerbils. 沙鼠出生后发育过程中的阴道表面上皮。

Archivio italiano di anatomia e di embriologia. Italian journal of anatomy and embryology Pub Date : 1989-07-01

A Kress, U M Spornitz

引用次数: 0

Use of human organs fixed long ago for the scanning electron microscopic analysis. 利用很久以前固定的人体器官进行扫描电镜分析。

Archivio italiano di anatomia e di embriologia. Italian journal of anatomy and embryology Pub Date : 1989-07-01

R Krstic, W Zaki

引用次数: 0

Calcium binding proteins in the brain. 大脑中的钙结合蛋白。

Archivio italiano di anatomia e di embriologia. Italian journal of anatomy and embryology Pub Date : 1989-07-01

M R Celio

引用次数: 0