OBJECTIVE
The aim of the study was to investigate the general regularities and qualitative differences of morphological reconstruction of the great saphenous vein (GSV) at different levels of the lower extremities in normal status and different periods of human life.
MATERIAL AND METHODS
The structure of the GSV wall in 30 human died from various causes at three age groups (5—10, 20—30 and 60—80 years) was studied by light microscopy. Sections of the GSV were excised in various segments of the limb (upper third of the thigh, middle third of the lower leg, and medial ankle).
RESULTS
In the early age period (5—10 years), active proliferation of the main elastic-contractile elements of the GSV wall was observed in all three shells. The GSV wall was represented by monolayer soft elastic connective tissue fibers with a well-represented endothelial cell layer and signs of the Genesis of circular smooth muscle fibers, evenly distributed in all layers; no changes in the structure of collagen fibers were obtained. The stromal elements of the vein wall are a single three-dimensional network with a predominant arrangement of elastic fibers in the longitudinal direction. Analysis of changes in the second group (20—30 years) showed a high degree of activity of continuing proliferative and beginning hypertrophic processes in the GSV wall. Structural changes on the part of smooth muscle fibers of the wall corresponded to the morphological picture of loading smooth muscle concentric hypertrophy. Reconstruction of the connective tissue backbone of the GSV wall morphologically corresponded to reactive connective tissue concentric hyperplasia. A typical manifestation of age—related involution processes occurring at various levels of the lower limb in the GSV wall in the elderly group (60—80 years) was age-reducing smooth muscle hypotrophy and structural changes in the connective tissue elements of the GSV wall at all levels of the limb. These changes corresponded to the morphological picture of the general age-related fibrotic involution with the appearance of trabecular thickening in the sub-endothelial layer of intima and active collagen proliferation of all layers.
CONCLUSION
Based on the research results’ analysis, it was possible to determine the formal genesis of the ongoing morphological reconstruction of the GSV wall over the course of a person’s life, taking into account different levels of limb. The obtained data will be the basis for further research in order to show the dynamics of morphological changes from the norm through moderate ectasia of the vein to its pronounced varicose transformation. This material will be submitted for discussion in the near future as well.