Proliferative Activity of Cells of Paravasal Connective Tissue at Different Ages

AbstractThe goal of the work was to study the age-related variability in the fibroblast proliferative activity in the paravasal connective tissue of the hollow and parenchymal organs derived from male corpses of the first mature period, elderly age, and senile age. The proliferation index was based on the expression of the Ki-67 protein (MIB-1 clone). It was found that the proliferation index in the first mature period was similar in the paravasal tissue cells of the parenchymal and hollow organs of the digestive tract. At the same time, the fibroblasts of heart paravasal tissue had the lowest proliferation activity of all the studied organs. The intensity of cell proliferation decreased with age; moreover, distinct organ specificity was revealed over the age of 75 years. The proliferation index in paravasal tissue cells of the parenchymal organs was the lowest of all the studied organs. The paravasal-tissue cells of the hollow organs retained significantly higher proliferative activity in the senile age; it was almost two times higher than that in parenchymal organs derived from the same age group.
Source: Advances in Gerontology - Category: Geriatrics Source Type: research
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