Arteriovenous Anastomosis in Human Hand Digital Skin
نویسندگان
چکیده
While a digital arteriovenous anastomosis (Hoyer-Grosser's organ, Masson's glomus) is well-known structure, photographic evidence of communication between arterial and venous lumens might not be demonstrated in routine histological or immunohistochemical analysis. Abundant clusters so-called glomera were found semi-serial sections the distal aspect 14 fingers obtained from 7 donated elderly cadavers. Two to six round oval observed each longitudinal section (over 0.3-0.6 mm maximum diameter) subcutaneous tissue 0.5-1.5 below basal layer skin, whereas none often transverse sections. Lumen-to-lumen arteriole venule at 8 sites 2 cadavers was identified these glomera. The opening large (50 μm 3 specimens an 80-year-old man, it small (10-30 μm) 5 those 91-year-old man. tightly surrounded by abundant nerve fibers expressing tyrosine hydroxylase immunoreactivity, part not. No little expression S100 protein immunoreactivity suggested that unmyelinated. morphology lumen-to-lumen simple - possibly end-to-end rather than sinuous curve on short funnel-shaped as seen standard textbooks.
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ژورنال
عنوان ژورنال: The Bulletin of Tokyo Dental College
سال: 2021
ISSN: ['0040-8891']
DOI: https://doi.org/10.2209/tdcpublication.2020-0036