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  • Title: Pomegranate (Punica granatum) peel is effective in a murine model of experimental Cryptosporidium parvum.
    Author: Al-Mathal EM, Alsalem AM.
    Journal: Exp Parasitol; 2012 Jul; 131(3):350-7. PubMed ID: 22580265.
    Abstract:
    Cryptosporidiosis, a major health issue for neonatal calves, is caused by the parasite Cryptosporidium parvum, which is highly resistant to drug treatments. To date, many anti-parasitic drugs have been tested, but only a few have been shown to be partially effective in treating cryptosporidiosis. Previous studies have indicated that pomegranate (Punica granatum) possesses anti-plasmodium, anti-cestode, and anti-nematode activities. Therefore, the aim of this study was to evaluate the effect of P. granatum peel on suckling mice infected with experimental C. parvum. At 4days of age, 72 neonatal albino mice were randomly divided into five groups: G1: healthy controls, G2: infected/untreated controls, G3: uninfected/distilled water-treated, G4: uninfected/P. granatum peel-treated, and G5: infected/P. granatum peel-treated. Mice were experimentally-infected by oral administration of 1×10(3)C. parvum oocysts per animal. On day 7 post-inoculation (pi), treated mice received an aqueous suspension of P. granatum peel orally (3g/kg body weight). The presence of diarrhea, oocyst shedding, and weight gain/loss, and the histopathology of ileal sections were examined. Infected mice treated with the P. granatum peel suspension showed improvement in all parameters examined. Additionally, these mice did not exhibit any clinical symptoms and no deaths occurred. Oocyst shedding was very significantly reduced in the P. granatum-treated mice by day 14 pi (P<.05), and was completely eliminated by day 28 pi. The mean weight gain of the P. granatum-treated mice was significantly higher than that of the infected/untreated controls throughout the study (P<.01). Histopathological analysis of ileal sections further supported the clinical and parasitological findings. The histological architecture of villi from the P. granatum-treated mice on day 14 pi showed visible improvement in comparison with the infected/untreated controls, including renewed brush borders, reduced numbers of C. parvum trophozoites, and reduced lymphatic infiltration. On day 28 pi, tissues of the P. granatum-treated mice were very similar to those of healthy control mice. These results suggest that P. granatum peel is a promising anti-coccidial therapeutic treatment that lacks negative side effects.
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