ВПЛИВ L-АРГІНІНУ НА РІВЕНЬ СИНТЕЗУ ОКСИДУ АЗОТУ ТА ВМІСТ ГЛІАЛЬНОГО ФІБРИЛЯРНОГО КИСЛОГО ПРОТЕЇНУ У ГОЛОВНОМУ МОЗКУ ПРИ ЕКСПЕРИМЕНТАЛЬНОМУ АНТИФОСФОЛІПІДНОМУ СИНДРОМІ

The study aims to investigate the infuence of L-arginine on the content of nitrite anions (NO2¯) and nitrate anions (NO3¯) and the content of glial fibrillary acidic protein (GFAP) in the cerebellum and cerebral hemispheres of BALB/c mice with antiphospholipid syndrome. The studies were performed on 30 female BALB/c mice. The experimental animals were divided into 3 groups: 1 – control (intact) animals; 2 – animals with experimental antiphospholipid syndrome (APS), 3 – animals with APS, which were injected with L-arginine at a dose of 25 mg/kg, intraperitoneally once a day, for 10 consecutive days after the development of APS. The increase in glial fibrillary acidic protein and stable metabolites of nitric oxide NO2¯ and NO3¯ in the cerebellum and cerebral hemispheres, relative to the control, was observed in APS-developed BALB/c mice. In case of injection of the precursor of NO synthesis, L-arginine, animals with APS were found to have a further significant increase in the content of NO2¯ and NO3¯ in the cerebellum and the cerebral hemispheres. The introduction of L-arginine did not cause significant changes in GFAP (total) in cerebral hemispheres. However, GFAP content (49-37 kDa) was decreasing. The cerebellum showed an increase in GFAP (total) and GFAP (49-37 kDa) content, compared to the performance of animals with APS. Therefore, the increase in the content of GFAP in the cerebellum and the cerebral hemispheres of BALB/c mice under APS indicates the development of reactive astrogliosis. The introduction of the precursor of NO synthesis, L-arginine, is accompanied by an increase in the content of stable metabolites of nitric oxide (NO2¯, NO3¯) and GFAP in the cerebellum of BALB/c mice, which can indirectly confirm the role of NO in regulating of GFAP expression in astrocytes under APS.