Аннотация
Проведены исследования морфофункциональных особенностей костного мозга бедренной и плечевой костей у длиннохвостых сусликов летом, осенью, во время торпора и в периоды кратковременных пробуждений зимой (зимняя эутермия). Гистологический анализ показал увеличение количества и размера адипоцитов в костном мозге у животных в состоянии торпора, с частичным замещением миелоидной ткани на жировую. Не смотря на больший объем костного мозга в бедренной кости, в нем обнаружено значительно меньше ядерных клеток, чем в плечевой кости, но существенно больше эритроидных островков, особенно во время спячки. У торпидных сусликов происходит замещение дисковидных эритроцитов в крови на атипичные формы эритроцитов (овальные, макроциты, мишеневидные), количество которых значительно уменьшается в зимний эутермный период. Уровень содержания ретикулоцитов возрастает в период спячки двукратно по сравнению с летом. Полученные результаты обсуждаются в контексте поддержания высокого уровня кислорода в крови во время торпора и адаптации эритропоэза к условиям длительной гипотермии.
Литература
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