СУБХРОНИЧЕСКАЯ ЭКСПЕРИМЕНТАЛЬНАЯ ИНТОКСИКАЦИЯ КРЫС СВИНЦОМ И КАДМИЕМ КАК ФАКТОР ПОВРЕЖДЕНИЯ СЕРДЕЧНО-СОСУДИСТОЙ СИСТЕМЫ

Свинцово-кадмиевая интоксикация является фактором риска для здоровья рабочих медеплавильной промышленности и людей, проживающих на территориях, загрязняемых её эмиссиями. Субхроническая интоксикация моделировалась путем повторных внутрибрюшинных инъекций ацетата свинца и хлорида кадмия как изолированно, так и в комбинации, 3 раза в неделю в течение 6 недель. Найдено снижение частоты сердечных сокращений и показателей артериального давления при кадмиевой интоксикации, а также снижение скорости кровотока и повышение показателей артериального давления при свинцовой. На электрокардиограмме обнаружены увеличение длительности комплекса QRS при кадмиевой интоксикации, увеличение интервала QT и снижение изоэлектрической линии при комбинированном токсическом действии свинца и кадмия. Показаны уменьшение толщины кардиомиоцитов под влиянием кадмиевой интоксикации и увеличение – под влиянием свинцовой, а также уменьшение толщины внутренней оболочки стенки аорты при всех исследованных типах интоксикации. Любая токсическая экспозиция приводила к снижению числа ядер на единицу площади гистологического препарата миокарда.

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