Histopathological changes on the pregnant rat's lung induced by sodium nitrite and monosodium glutamate

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Abstract

Food additives and preservatives are widely used globally, which, despite their many benefits, have great harm if they are used without health restrictions or control, as they cause many health problems and tissue lesions. Therefore, the present study aimed to investigate the histopathological effects on the lung of pregnant rats of two types of these substances: Monosodium glutamate (MSG) and Sodium nitrite (NaNO2). Twenty-four pregnant rats used for this study, and they were divided into four groups equally. The control group was dosed with distilled water from the sixth day to the fifteenth day of pregnancy. The second was dosed with MSG at a 12g /kg concentration for the same period in the first group. The third injected with a concentration of 120 mg/kg of NaNO2 for the same period. The fourth was dosed with MSG and NaNO2 together, with the same concentrations and the above period. The results showed that the second group's lungs showed many histopathological changes, including strong infiltration of inflammatory cells, congestion of blood vessels, necrosis of bronchioles and alveolar septa, and emphysema of some alveoli. In the third group, changes included hyperplasia of the fibroblasts, hemorrhage in the alveoli, desquamation and necrosis in bronchioles, peri-bronchial fibrosis, blood vessel congestion. The fourth group showed infiltration of inflammatory cells, necrosis in multiple lung areas, emphysema, fibrosis in some alveoli, and hypoplasia of the muscle fibers around the blood vessels. The study concluded that MSG and NaNO2 caused much tissue damage in the lungs of pregnant rats.

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Althanoon, S. A., & Taha, A. M. (2022). Histopathological changes on the pregnant rat’s lung induced by sodium nitrite and monosodium glutamate. Iraqi Journal of Veterinary Sciences, 36(2), 419–424. https://doi.org/10.33899/ijvs.2021.130464.1824

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