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Fine Structural Arrangement of Fibrous Stroma around Dermal Capillaries
Author(s) -
Imayama Shuhei,
Yashima Yutaka,
Urabe Harukuni
Publication year - 1987
Publication title -
the journal of dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 65
eISSN - 1346-8138
pISSN - 0385-2407
DOI - 10.1111/j.1346-8138.1987.tb03541.x
Subject(s) - perpendicular , anatomy , materials science , collagen fibril , lumen (anatomy) , stromal cell , long axis , capillary action , layer (electronics) , stroma , composite material , biology , pathology , geometry , immunohistochemistry , medicine , mathematics , microbiology and biotechnology
Capillaries of the rat skin were sectioned in planes parallel, perpendicular, and oblique to the vascular long axis for the purpose of studying the perivascular fibrous stroma. Fine structural observation revealed that the vessels had organized stromal coats. Delicate collagen fibrils were regularly arranged in alternate, largely orthogonal layers pursuing a spiral or longitudinal course at the innermost layer. However, the fibrillar density and layering differed between the continuous and fenestrated segments of the capillary course. Along segments with a narrow lumen and a thick endothelium, the fibers were dense and both the longitudinal and circular layers exhibited almost complete turns around the vascular perimeter. The fenestrated segments, in contrast, showed a loosely arranged fibrillar coat and sometimes lacked the circular layer.