Succinate and succinate dehydrogenase as a «foothold» in the Krebs cycle in critical conditions

Purpose. Search and presentation of data from experimental and clinical studies reflecting the central role of succinate and succinate dehydrogenase in the regulation of adaptation mechanisms in critical conditions. Material and methods. The search for literature sources was carried out using the electronic resources of the Russian scientific electronic library eLIBRARY.ru, with the use of the following keywords: «Krebs cycle, succinate, succinate dehydrogenase, critical conditions», as well as in the English-language text database of medical and biological publications on medical sciences PUBMED, where similar keywords «Krebs cycle, succinate, succinate dehydrogenase, critical conditions» were used. Results. Taking into account the data presented in the review, it can be stated that the complex of succinate and succinate dehydrogenase is the central link in the Krebs cycle and the main structure of the antihypoxic ensemble of all body cells during the adaptation period under critical conditions. Conclusion. The data of experimental and clinical studies reflecting the central role of succinate and succinate dehydrogenase not only in the mechanisms of adaptation to hypoxia, but also in the regulation of inflammation, thermogenesis, hemostasis disorders, acid-base state, electrolyte metabolism, vascular tone and trophism of intestinal tissues, as well as in immunological reactions of the body, allow us to consider the substrate and enzyme as the central link of the Krebs cycle and the main structure of the antihypoxic ensemble of all body cells. The data presented in the review open up new prospects for the use of succinates in critical conditions.