Two main types of extracellular matrix distribution was distinguished on the basis of immunohistochemistry of the periodontium connective tissue in various inflammatory-sclerotic processes. The 1st type was characterized by a significant reduction of interstitial collagen, moderate content of type V collagen and high content of fibronectin (in case of the exacerbation). The 2nd type was characterized by a high content of type V collagen, increased content of interstitial collagen and moderate amount of fibronectin (in case of reparative sclerosis). An inversion of the relation between the I and III collagen types in favour of the latter, high level of type V collagen and permanent presence of fibronectin were characteristic for the scar tissue. These properties of scar connective tissue indicate its immaturity and permanent activity.

Adult↗

PubMedDate not supplied

[Characteristics of myocardial microcirculation and metabolism after preservation of the heart by the method of hypothermal perfusion].

Explore the source record for details and available documents.

Animals↗

PubMedDate not supplied

[The use of tricalcium phosphate in the vital subtotal extirpation of the pulp].

The authors have proved the desirability of vital subtotal extirpation of the pulp in experiments and clinically. Exposure to tricalcium phosphate transformed the terminal portion of the root pulp into osseocement biologic filling, obturated the apical opening and thus prevented the inflammation in the periodontium and protected it from pathologic exposures.

Adult↗

PubMedDate not supplied

[Morphologic studies of bronchial biopsies in chronic bronchitis before and after treatment].

Bronchial biopsies in patients with chronic bronchitis were studied histochemically, light and electron microscopically before and after conventional treatment and combined therapy (standard regimen plus He-Ne laser puncture). The conclusion is made that the combined therapy is more effective especially at early stages of the disease when irreversible sclerotic changes in the submucosa and microcirculatory bed are absent. This therapy at early stages of the disease stimulates regeneration of the surface bronchial epithelium and facilitates reversibility of initial metaplasia.

Adult↗

PubMedDate not supplied

[Phenotypic characterization of cells and structure of the extracellular matrix in pleomorphic adenoma of the salivary glands].

Phenotypic characteristics of cells and extracellular matrix (ECM) of 14 salivary gland pleomorphic adenomas were studied by indirect immunofluorescence. All cells in the epithelial structures expressed cytokeratin 8, the majority of cells produced vimentin, laminin and IV type collagen. Cells of myxoid areas expressed vimentin: type IV collagen was observed in the form of fibrillar structures. Fibrous areas were characterized by vimentin and cytokeratin 8 expression; types I, III, IV collagens and fibronectin with ED-A sequence were present in ECM. Terms "epithelial structures", "epithelial" and "myoepithelial" cells in relation to pleomorphic adenoma may be used only relatively as it is mainly represented by cells with features of both epithelial and mesenchymal phenotype. Characteristics of ECM synthesized in various structures of pleomorphic adenoma may serve an additional criterion of cell transformation.

Adenoma, Pleomorphic↗