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Vol 60(2026) N 2 p. 285-298; DOI 10.1134/S0026893325700724 N.V. Andrianova1, K.N. Lapin2, A.A. Brezgunova1, A.D. Bocharnikov1,3, I.B. Pevzner1, M.I. Buyan1,3, E.S. Remneva1,4, D.A. Kirpicheva1,5, S.N. Kalabushev1,2, I.A. Ryzhkov2, E.Y. Plotnikov1* Organ-Specific Changes in the Expression of Inf lammatory Response and Antioxidant Defense Genes in the Late Period after Hemorrhagic Shock 1Belozersky Institute of Physico-Chemical Biology, Moscow State University, Moscow, 119991 Russia2Negovsky Research Institute of General Reanimatology, Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, Moscow, 107031 Russia 3Faculty of Bioengineering and Bioinformatics, Moscow State University, Moscow, 119991 Russiа 4Patrice Lumumba Peoples' Friendship University of Russia, Moscow, 117198 Russia 5Sechenov First Moscow State Medical University (Sechenov University), Moscow, 119048 Russia *plotnikov@belozersky.msu.ru Received - 2025-09-02; Revised - 2025-10-06; Accepted - 2025-10-08 Hemorrhagic shock (HS) is a life-threatening condition that leads to multiple organ failure due to centralization of blood f low and impaired blood clotting. In this study, we investigated the acute and delayed effects of HS on the brain, kidneys, and liver of rats to identify molecular targets for therapy of the consequences of shock. Blood acid-base balance and electrocardiography (ECG) parameters were studied in rats in the acute phase of HS. Gene expression of antioxidant enzymes (Gpx1, Sod1, Cat, Nfe2l2) and inflammatory markers (Ptprc, Cxcl1, Cd86, Itgal, Il1b, Il6, Tnf, Tlr2, Cox2, Cst7, Ccl3, Il10) in brain, kidney, and liver tissues was analyzed, as well as the amount of protein markers for kidney damage (NGAL, KIM-1) in urine 24 h after HS. In addition, markers for the activation of astrocytes (Gfap) and microglia (Aif1) as well as neuronal markers (Eno2, Tubb3) in brain tissue were analyzed. Biochemical markers for liver and kidney damage and total antioxidant activity were determined in blood serum. Acute HS caused decompensated lactic acidosis, arterial hypotension and characteristic changes in the ECG. Although no pronounced inflammatory response was detected in brain, kidney and liver tissue in the late phase after acute blood loss, the brain and liver tissue were more susceptible to the adverse effects of acute blood loss than the kidneys according to a number of indicators. This points to the need to develop targeted strategies to protect organs in the postresuscitation period by targeting specific molecular targets in specific tissues. hemorrhagic shock, multiple organ failure, inf lammation, oxidative stress, kidneys, brain, liver |
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