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Biomedical subjects

G I Lavrishcheva

Publications and source records attributed to G I Lavrishcheva.

At least 19 recordsLinked to original sources
PubMed1991

[The essence of osteoid osteomas and osteoblastomas].

178 cases of osteoid osteomas and osteoblastomas collected during 35 years were studied morphologically and roentgenologically (angiography--28 cases). Clear-cut differences between these two lesions were revealed. The differences concerned: 1) the character of the border with the surrounding bone tissue; 2) the morphology of bone structures being chaotic in the osteoblastoma; 3) intensity of proliferation in the osteogenic tissue; 4) differences in the angiographic data. According to the author's opinion osteoblastoma is a blastomogenic process with destructive growth and intensive proliferation. Classical osteoid osteoma does not possess these properties and is the result of dysontogenetic development of the intraosseous vascular system.

Bone Neoplasms↗
PubMed1990

[Destructive and reparative processes after UHF and cryo-effect on bone regeneration in dogs].

The experiment was carried out on the lower jaw of mongrel dogs. It included 36 observations on the basis of the morphological method. The aim is to study the effectiveness of the effect of cold and the combination of the UHF radiation on the proliferative reaction of cells of the lower jaw. It was proved that under the influence of cold the skeletogenic tissue undergoes changes. The combination of cold with UHF radiation cause less destructive cold effects on the bone tissue away from the injury of resorption. Hence the effect of cold on the proliferating tissue causing its necrosis proves the possibility of its use in removal of tumours, substituting wide caving around them by more protective intervention: the combination of carving of tumour with the cryodestruction of tissue around it. In such a combination the reparative processes become more effective, which enables us to recommend them for clinical use for curing benign tumour.

Animals↗
PubMed1986

[Development and differentiation of bone marrow mechanocytes].

Morphological studies in the model with the complete destruction of bone marrow in the diaphysis of the tubular bone have revealed the process of stromal elements regeneration. Within the first 24 hours after the trauma insignificant accumulations of fibroblast-like cells in the lumen of some vascular channels have been observed in cell-free cortical plates. In two days spheric cells with a large dense nucleus were detected in tissue-free bone-marrow diaphysis cavity. This fact seems indicative of the viability of the vascular channel cells. This was manifested in the regained tinctorial and biological properties (i.e. the ability to proliferate). The recovery of these properties are likely to be related to vessel pericytes in the microcirculatory net of the vascular channels.

Animals↗
PubMed1985

[Histogenesis of skeletogenic tissue in bone regeneration during distraction].

Light and electron microscopy were employed to study the histogenesis of the skeletogenous tissue during stable distraction osteosynthesis according to G. A. Ilizarov. Osteosynthesis proceeded on the basis of the invariably existing fibrillar connective tissue growth plate situated in the medium part of the distraction regenerate. Osteogenesis was continuously accompanied by angiogenesis. Preservation of the connective tissue plate is accounted for by the stimulating influence of distraction on fibrillogenesis. The authors suggest the common character of the histogenesis of the vascular and bone tissues in the connective tissue blastema of the interfragmental distraction regenerate.

Animals↗