摘要:

Abstract.Thirty‐seven cases of focal epithelial hyperplasia were discovered among pupils of reform schools and none among pupils of ordinary schools. This difference in occurrence was significant (P<0.01). Lesions were either discrete papules or clusters of papules; and the lining mucosa was the most affected part. Eighteen cases were examined microscopically revealing the typical features of the condition. The fact that these lesions occurred in a select group of pupils all of whom are classified as Cape Coloureds point to either a selective distribution of the disease or a spread of the disease among people living in communal circumstances. This pattern of distribution coupled with the clinical and histological features would fit a disease of viral origin which is also communicabl

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1977.tb01789.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

Abstract.Election microscopic observation of samples of tissues from lesions diagnosed as focal epithelial hyperplasia revealed the presence of viral particles in six (possibly seven) of 13 cases examined. Viral particles were intranuclear and varied from sparsely scattered to densely packed. A crystalline arrangement was present in one case. The chromatin of affected cells was typically condensed into clumps and thick bands, and the nuclear membrane was usually absent in pronounced cases. The nuclei of the basal and prickle cells were frequently indented and the chromatin peripherally condensed. Numbers of lysosomal‐like organelles were observed in many of these cells. The ballooning epithelial cells with their mitosis‐like aberrations observed with light microscopy consisted of a rim of tonofilmaments and organelles and a homogeneous granular center interspersed with dense areas. It is suggested that the nuclear characteristics and numerous lysosomes observed in basal and prickle cells are cellular changes induced by the viral infection and that the mitosis‐like aberrations represent a bizarre and arrested form of mi

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1977.tb01790.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

Abstract.A case of an oral angiomyoma is presented. The light‐ and electron‐microscopic features of this rare oral tumor are described and compared to ultrastructural findings in related tum

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1977.tb01791.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

Abstract.Orofacial wounds, including rupture of the palate, were surgically createdin uteroon 19½ day Sprague Dawley rat fetuses. Six hours prior to sacrifice 0.1 mgm/100 gm maternal body weight of colchicine was injected subcutaneously. Five fetuses in each group of operated and unoperated controls were sacrificed at 0, 24, 48 and 72 h postoperatively. Serial histological sections in the frontal plane were stained with hemotoxylin and eosin and modified Mallory's.Rapid and complete epithelialization of oral and skin wounds was observed within the 72 h period. There was a complete lack of inflammatory response, scab formation and involvement of nasal epithelium in healing. Nasal cartilage wounds rapidly rounded off and the perichondrium reformed without evidence of callus formation. These findings are discussed in regard to the etiology of some congenital defects and the prospect of fetal surgical correction of orofacial deformity

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1977.tb01792.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

Abstract.Microprobe analysis of Araldite embedded sections of hyalin bodies revealed the presence of sulphur, chlorine, calcium and in some cases iron. The results have been compared with those obtained from control tissue sections of human heel skin, a thrombus occluded vessel and mineralized spherules in a dental follicle. Microradiographic studies showed that the density of hyalin bodies increased progressively towards the core. Isodensitracing confirms the laminar configuration of hyalin bodies as seen electron microscopically. The findings conform with the hypothesis that hyalin bodies originate as an epithelial secretion.

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1977.tb01793.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1977.tb01794.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

Book review in this article:Frontiers of Oral Physiology, Vol. 2,Physiology of Oral Tissues, Y. Kawamura (ed.)

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1977.tb01795.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

ISSN:0904-2512    

DOI:10.1111/j.1600-0714.1977.tb01796.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY