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  • Title: The effect of kefir on glutathione (GSH), malondialdehyde (MDA) and nitric oxide (NO) levels in mice with colonic abnormal crypt formation (ACF) induced by azoxymethane (AOM).
    Author: Cenesiz S, Devrim AK, Kamber U, Sozmen M.
    Journal: Dtsch Tierarztl Wochenschr; 2008 Jan; 115(1):15-9. PubMed ID: 18265753.
    Abstract:
    In this study we investigated the effect of kefir on the levels of glutathione (GSH), malondialdehyde (MDA), nitric oxide (NO) in the liver, stomach, spleen and colon of mice with colonic aberrant crypts formed by azoxymethane (AOM). Thirty 12 weeks old Swiss Albino mice averaging 31.5 g weight were used as experimental animals. The mice were separated into 3 groups. The first group was the control group, second group was the AOM and third group was the AOM+kefir group. We applied AOM to the second and third groups. Mice were fed ad libitum by laboratory rodent chow during the experiment period. Water was given to the first and second groups and third group received only kefir diluted with water (50%). AOM was injected subcutaneously to the second and third groups for 7 weeks (two times a week, 5 mg/kg). Six weeks after the final AOM treatment the animals were sacrificed and liver, stomach, spleen and colon samples were collected from all the groups. MDA level demonstrated an increase only in stomach for the third group (p < 0.001), while an elevation was observed for all of the four organs for the second group (spleen p < 0.001, liver p < 0.001, colon p < 0.01). GSH level showed an increase in the second group at stomach (p < 0.01) and colon (p < 0.001), while in the third group, a small increase was determined only at the colon (p < 0.05). NO level increased at all of the organs in the second group (spleen, liver, colon p < 0.001, stomach p < 0.05), but only at liver and colon in the third group 3 (p < 0.001). In conclusion these results showed that kefir plays an antioxidant role.
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