3 results
21/Jul/2022
DOI: 10.31744/einstein_journal/2022AO0011
ABSTRACT Objective To determine whether passive smoking causes morphological and structural changes in the arcuate arteries of rats exposed for 7 to 28 days. Methods Wistar rats aged eight weeks and weighing 260g on average were allocated to a Control or a Smoker Group. Groups were further divided into 4 groups containing 5 animals each. Morphological-functional analysis of the right kidneys was carried out after 7 and 28 days of exposure to the smoke of 40 cigarettes per day. Cigarettes […]
Keywords: Adventitia; Collagen; Endothelium; Kidney cortex; Tobacco smoke pollution; Tunica media
28/Feb/2020
28/Feb/2020
DOI: 10.31744/einstein_journal/2020AO5105
ABSTRACT Objective To evaluate the density of anti-galectin-3-immunostained cells, collagen percentage, mast cell density and presence of pathological processes in intestinal muscle biopsies of patients. Methods Thirty-five patients who underwent intestinal biopsy were selected from 1997 to 2015. Patients were divided into three groups: chagasic patients with mucosal lesion (n=13), chagasic patients with intact mucosa (n=12) and non-chagasic patients with no mucosal lesion (n=10). Histological processing of the biopsied fragments and immunohistochemistry for galectin-3 were performed. Additional sections were stained […]
Keywords: Chagas disease; Collagen; Galectin-3; Mast cells; Megacolon
03/Mar/2015
03/Mar/2015
DOI: 10.1590/S1679-45082015RC2907
Storiform collagenoma is a rare tumor, which originates from the proliferation of fibroblasts that show increased production of type-I collagen. It is usually found in the face, neck and extremities, but it can also appear in the trunk, scalp and, less frequently, in the oral mucosa and the nail bed. It affects both sexes, with a slight female predominance. It may be solitary or multiple, the latter being an important marker for Cowden syndrome. It presents as a painless, solid […]
Keywords: Case reports; Collagen; Fibroma; Hamartoma; Skin; Skin neoplasms