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Abstract
The important component of obesity pathogenesis is inflammatory activation of innate immune cells within adipose tissue and in other body locations. Both the course of obesity and innate immune reactivity are characterized by sex-associated differences. The aim of the work was a comparative investigation of metabolic profiles of phagocytes from different locations in male and female rats with MSG-induced obesity. The administration of monosodium glutamate (MSG) caused obesity, with sex-associated differences, that was more severe in male rats. Obesity was associated with pro-inflammatory activation of CD14+ phagocytes from adipose tissue in female, but not in male rats, which was demonstrated by decreased phagocytosis activity along with increased ROS generation. Phagocytes from the peritoneal cavity and peripheral blood of obese female rats exhibited neutral metabolic profile, whereas those cells from obese male rats displayed a pro-inflammatory metabolic profile. Thus, the manifestation of obesity-induced inflammation was characterized by different patterns of metabolic profile of phagocytes in male and female rats. Identified immune cell characteristics expand our knowledge of obesity immunobiology and may help to develop more effective preventive and therapeutic interventions for obese patients of different sexes.
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Details
1 Microbiology and Immunology Department, Educational and Scientific Centre “Institute of Biology and Medicine”, Taras Shevchenko National University of Kyiv, 2, Prospekt Hlushkov, Kyiv, Ukraine
2 Department of Biochemistry, ESC “Institute of Biology and Medicine”, Taras Shevchenko National University of Kyiv, 2, Prospekt Hlushkov, Kyiv, Ukraine
3 Research Laboratory of Experimental Oncology, National Cancer Institute, Kyiv, Ukraine
4 Research Laboratory of Microbiological and General Immunological Problems of Biotechnology, ESC “Institute of Biology and Medicine”, Taras Shevchenko National University of Kyiv, 2, Prospekt Hlushkov, Kyiv, Ukraine
5 Department of Experimental Cancer Therapeutics, R. E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, National Academy of Sciences of Ukraine, Ukraine, 45, Kyiv, Ukraine
6 Research Laboratory of Pharmacology and Experimental Pathology, ESC “Institute of Biology and Medicine”, Taras Shevchenko National University of Kyiv, 2, Prospekt Hlushkov, Kyiv, Ukraine