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Preventive Effect of Different Wild Pistachio Oils on Oxidative Stress Markers, Liver Enzymes, and Histopathological Findings in a Metabolic Syndrome Model

Sanaz Jamshidi, Najmeh Hejazi, Mohammad-Taghi Golmakani, Nader Tanideh, Mina Heidari Esfahani

Background: Wild pistachio (Pistacia Atlantica mutica) species with wide distribution in Iran have different nutrition properties and may have therapeutic effects in metabolic syndrome. Metabolic syndrome, as a prevalent health problem, is a main risk factor for different chronic diseases such as diabetes, fatty liver and cardiovascular diseases. The present study aimed to evaluate the preventive effects of mixture, kernel, and hull oil of wild pistachio (WP) on oxidative stress markers, liver function and histopathological findings in metabolic syndrome induced rats. Materials and Methods: After oil extraction by cold press method and chemical analysis, rats were divided into 6 groups. Group 1 received normal saline;  group 2 received 2cc fructose solution and 0.5cc normal saline; and groups 3, 4, 5 and 6 received 2 cc fructose solution and 0.5 cc sunflower oil, mixture, hull and kernel oils of WP for 10 weeks, respectively. Then, glycemic indices, oxidative stress, liver enzymes and histopathological examination were determined using standard laboratory tests. Results: WP Kernel and mixture oils notably decreased the fasting blood sugar and insulin resistance compared with the fructose group. Insulin level was significantly increased in the kernel oil group (P<0.05). There was no significant difference in oxidative stress, liver enzymes and histopathology parameters among the groups. Conclusion: Kernel oil of WP improved hyperglycemia, insulin resistance and insulin secretion, but the changes in oxidative stress markers, liver enzymes and histopathologic results were not significant among the groups. [GMJ.2019;8:e1238]

Wild Pistacia; Oils; Liver Function Tests; Insulin Resistance

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