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Neuroprotective effects of Polygonum multiflorum on nigrostriatal dopaminergic degeneration induced by paraquat and maneb in mice.
Pharmacol Biochem Behav. 2005 Oct; 82(2):345-52.PB

Abstract

The neuroprotective effects of Polygonum multiflorum extract (PME) and its two fractions, ethanol-soluble PME (PME-I) and -insoluble PME (PME-II), on the degeneration of nigrostriatal dopaminergic neurons induced by a combination of paraquat and maneb (PQMB) were investigated in male C57BL/6 mice. The mice were treated twice a week for 6 weeks with intraperitoneal injections of PQMB. This combination caused a reduction of spontaneous locomotor activity, motor incoordination, and declines of dopamine level in the striatum and tyrosine hydroxylase-positive neurons in the substantia nigra. Administration of PME and PME-I once daily for 47 days during 6 weeks of PQMB treatment and last 8 days after PQMB significantly attenuated the impairment of behavioral performance and the decrease in striatal dopamine level and substantia nigral tyrosine hydroxylase-positive neurons in the PQMB-treated animals, whereas the administration of PME-II had no effect on these behavioral, neurochemical and histological indices. The present findings suggest that PME has a beneficial influence on parkinsonism induced by PQMB and that the effects of PME are attributable to some substance(s) included in the ethanol-soluble fraction of PME (PME-I).

Authors+Show Affiliations

Division of Natural Products Chemistry, Toyama Medical and Pharmaceutical University, 2630 Sugitani, Toyama 930-0194, Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16214209

Citation

Li, Xia, et al. "Neuroprotective Effects of Polygonum Multiflorum On Nigrostriatal Dopaminergic Degeneration Induced By Paraquat and Maneb in Mice." Pharmacology, Biochemistry, and Behavior, vol. 82, no. 2, 2005, pp. 345-52.
Li X, Matsumoto K, Murakami Y, et al. Neuroprotective effects of Polygonum multiflorum on nigrostriatal dopaminergic degeneration induced by paraquat and maneb in mice. Pharmacol Biochem Behav. 2005;82(2):345-52.
Li, X., Matsumoto, K., Murakami, Y., Tezuka, Y., Wu, Y., & Kadota, S. (2005). Neuroprotective effects of Polygonum multiflorum on nigrostriatal dopaminergic degeneration induced by paraquat and maneb in mice. Pharmacology, Biochemistry, and Behavior, 82(2), 345-52.
Li X, et al. Neuroprotective Effects of Polygonum Multiflorum On Nigrostriatal Dopaminergic Degeneration Induced By Paraquat and Maneb in Mice. Pharmacol Biochem Behav. 2005;82(2):345-52. PubMed PMID: 16214209.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Neuroprotective effects of Polygonum multiflorum on nigrostriatal dopaminergic degeneration induced by paraquat and maneb in mice. AU - Li,Xia, AU - Matsumoto,Kinzo, AU - Murakami,Yukihisa, AU - Tezuka,Yasuhiro, AU - Wu,Yingliang, AU - Kadota,Shigetoshi, Y1 - 2005/10/07/ PY - 2005/04/27/received PY - 2005/07/22/revised PY - 2005/09/09/accepted PY - 2005/10/11/pubmed PY - 2006/3/3/medline PY - 2005/10/11/entrez SP - 345 EP - 52 JF - Pharmacology, biochemistry, and behavior JO - Pharmacol Biochem Behav VL - 82 IS - 2 N2 - The neuroprotective effects of Polygonum multiflorum extract (PME) and its two fractions, ethanol-soluble PME (PME-I) and -insoluble PME (PME-II), on the degeneration of nigrostriatal dopaminergic neurons induced by a combination of paraquat and maneb (PQMB) were investigated in male C57BL/6 mice. The mice were treated twice a week for 6 weeks with intraperitoneal injections of PQMB. This combination caused a reduction of spontaneous locomotor activity, motor incoordination, and declines of dopamine level in the striatum and tyrosine hydroxylase-positive neurons in the substantia nigra. Administration of PME and PME-I once daily for 47 days during 6 weeks of PQMB treatment and last 8 days after PQMB significantly attenuated the impairment of behavioral performance and the decrease in striatal dopamine level and substantia nigral tyrosine hydroxylase-positive neurons in the PQMB-treated animals, whereas the administration of PME-II had no effect on these behavioral, neurochemical and histological indices. The present findings suggest that PME has a beneficial influence on parkinsonism induced by PQMB and that the effects of PME are attributable to some substance(s) included in the ethanol-soluble fraction of PME (PME-I). SN - 0091-3057 UR - https://www.unboundmedicine.com/medline/citation/16214209/Neuroprotective_effects_of_Polygonum_multiflorum_on_nigrostriatal_dopaminergic_degeneration_induced_by_paraquat_and_maneb_in_mice_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0091-3057(05)00305-9 DB - PRIME DP - Unbound Medicine ER -