Smokeless tobacco-induced lamellar body abnormalities.
Smokeless tobacco-induced lamellar body abnormalities.
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无烟烟草引起的层状体异常。
DOI:
10.1111/j.1601-0825.2005.01211.x
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发表时间:
2006
期刊:
影响因子:
3.8
通讯作者:
Cordell,GA
中科院分区:
文献类型:
--
作者:
Colvard,MD;Ashrafi,SH;Alonge,OK;Cordell,GA
Objectives:To compare the morphological changes and quantitative distribution of lamellar bodies (Lb) (membrane coating granules) in the hamster cheek pouch epithelium with smokeless tobacco (ST).Materials and methods:Archives of experimental material from previously published studies [S. Ashrafi, A. Das, R. Worawongvasu, B. Mehdinejad and J. Waterhouse (1992)Scanning Microscopy6: 183] were utilized. Animals in experimental group received most ST (snuff) in their right pouch, 5 days weekly, for 24 months, while no snuff was given to control group. After 24 months, the epithelial tissues were processed for electron microscopic study. Volume densities of Lb were assessed by morphometry.Main outcome measures:Densities of Lb in the two groups, experimentalvscontrol.Results:In the control, Lb extruded their contents into the intercellular spaces of upper granular layers and in between the last granular cell layers and keratin layers to form a permeability barrier. Conversely, in the smokeless tobacco‐treated epithelium, the majority of the Lb that were formed remained inside and accumulated within the granular cells, without extruding their contents into the intercellular spaces to form a lipid compound permeability barrier.Conclusions:Commercial alkaline ST may have contributed to the abnormal accumulation of Lb in the granular cell layer and affected the extrusion process of Lb to form an incomplete permeability barrier in the oral epithelium.
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DOI:
--
发表时间:
1980
期刊:
Biochimica et Biophysica Acta
影响因子:
--
作者:
S. S. Khosla;L. Gobran;S. Rooney
通讯作者:
S. Rooney
DOI:
10.1016/s0021-9258(19)45365-9
发表时间:
1982
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
S. Pelech;D. Vance
通讯作者:
D. Vance
DOI:
--
发表时间:
1981
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Brown,LA;Longmore,WJ
通讯作者:
Longmore,WJ
DOI:
10.1042/bj2320705
发表时间:
1985
期刊:
The Biochemical journal
影响因子:
--
作者:
Tesan,M;Anceschi,MM;Bleasdale,JE
通讯作者:
Bleasdale,JE
DOI:
10.1016/0005-2760(76)90171-5
发表时间:
1976
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
W. Stern;Cecilia Kovac;P. Weinhold
通讯作者:
P. Weinhold