Волгоградский государственный медицинский университет, Российская ФедерацияAcetate stomach ulcer was experimentally modeled in stress resistant and stress nonresistant rats for immunohistochemical identifying a specific number and expression intensity of eNOS-positive cells and determination of the magnesium level in biological media. The content of intra-erythrocyte magnesium in reaction with titanium yellow was reduced in rats with different resistance to stress in low eNOS activity in the gastric mucosa, in the muscular layer in stress nonresistant animals and almost complete absence of antigen-positive cells in the submucosa. A positive correlation was found between the level of intra-erythrocyte magnesium and the specific number of eNOS-positive cells in the gastric mucosa in both groups of animals and also between expression intensity in the submucosa of stress nonresistant rats. A relationship was established between the magnesium content, specific number and expression intensity of eNOS in stress nonresistant rats in the stomach submucosa.
Experimental medicine Оригинальные исследОванияPurpose of study was to determine the specific number and expression activity of gelatinase B-positive cells in the ulcerous defect, and the magnesium levels in the concentrated red cells obtained from various locations in rats with experimental acetate gastric ulcer. The experiment was performed on 18 white Wistar rats. The study of the specific number and gelatinase B expression activity was done through immunohistochemistry (Novocastra, NCL-ММР9, for the paraffin blocks, working dilution 1:40); the content of magnesium in red blood cells through the reaction with titan yellow. The study allows concluding that in the site of experimental ulcerous defect there is an increase in the number and the expression activity оf gelatinase B-positive cells in the surface epithelium, with even a higher degree of increase in the gastric LPS (cellular component) against lowered magnesium levels in the concentrated red cells. Key words: experimental acetate gastric ulcer, gelatinase B, magnesiumЦель исследования состояла в изучении удельного числа и активности экспрессии желатиназы В-позитивных клеток в тканях язвенного дефекта и уровня магния в эритроцитарной массе крови из разных регионов у крыс с экспериментальной ацетатной язвой желудка. Эксперименты выполнены на 18 белых крысах линии Вистар. Исследование удельного числа и интенсивности желатиназы В было проведено иммуногистохимическим методом («Novocastra», NCL-ММР9, для парафиновых блоков, рабочее разведение 1:40); содержание магния в эритроцитах -по реакции с титановым желтым. Проведенное исследование позволяет сделать заключение, что в зоне экспериментально-го язвенного дефекта увеличивается число и интенсивность экспрессии желатиназы В-позитивных клеток в покровном эпителии и еще в большей степени в СПСО (клеточный компонент) на фоне снижения содержания магния в эритроцитарной массе.
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