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CJ. Yu, MF. Zheng, CX. Kuang, WD. Huang, Q. Yang, ” Orengedokuto and its constituents with therapeutic potential in Alzheimer's disease inhibit indoleamine 2, 3-dioxygenase activity in vitro”, J Alzheimers Dis, Vol.22, No.1, 2010, pp. 257-266.PMid:20847417

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• TITLE: Berberine Prolongs Life Span and Stimulates Locomotor Activity of Drosophila melanogaster

  AUTHORS: V. V. Navrotskaya, G. Oxenkrug, L. I. Vorobyova, P. Summergrad

  KEYWORDS: Berberine; Life Span; Drosophila melanogaster; Kynurenine; Vertical Climbing; Viability

  JOURNAL NAME: American Journal of Plant Sciences, Vol.3 No.7A, July 17, 2012

  ABSTRACT: Drosophila melanogaster mutants with deficient kynurenine (KYN) formation from tryptophan (TRP) have longer life span than wild type flies. Administration of alpha-methyl-TRP and 5-methyl-TRY, the inhibitors of TRP-KYN metabolism, prolonged life span in wild-type flies. Both inhibitors are not available for human use. Berberine, an isoquinoline alkaloid isolated from berberis aristata is known as the herb widely used in traditional Chinese and Indian medicine. Berberin is a strong inhibitor of the enzyme catalyzing TRP conversion into KYN. Considering this particular feature we investigated the effect of berberine on life-and health-span in wild-type Drosophila melanogaster. The results of our study showed that Berberine extended mean, median and maximum life span of female flies. Berberine did not affect the number of pupae of filial generation and decreased their lethality. Berberine increased locomotor activity (vertical climbing). The results of the study suggest that berberine prolongs life- and improves health-span of Drosophila melanogaster. Berberine might be a candidate drug for prevention and treatment of aging and aging-associated medical and psychiatric disorders.