Abstract
The effects of aqueous extract of Schizandra Chinensis Fruit (AESC) on cadmium-induced changes of monoamine neurotransmitters in the different brain regions of adult rats were investigated. Male rats were received intraperitoneal (i.p.) administration of CdCl2 (0.6 mg/kg/d) for 21 days and sacrificed 7 days after the last administration. Concentrations of norepinephrine (NE), dopamine (DA) in striatum and serotonin (5-HT), 5-hydroxyindole acetic acid (5-HIAA) in cortex were measured by HPLC. There were significant decreases of NE, DA, 5-HT and 5-HIAA in Cd intoxicated rats (P < 0.05), while pretreatment with AESC (20 mg/kg/d or 60 mg/kg/d, p.o., 30 min before CdCl2) greatly inhibited the decrease of monoamine transmitters, respectively (P < 0.05). Also, AESC significantly increased the reduction of glutathione contents and superoxide dismutase activities in cortex induced by CdCl2. These results suggest that AESC ameliorates Cd-induced depletion of monoamine neu-rotransmitters in brain through its antioxidant activity.
Key words: Schizandra Chinensis Fruit, Cadmium, Monoamines, Brain, Rat
Abbreviations
- AESC
aqueous extract of Schizandra Chinensis Fruit
- NE
norepinephrine
- DA
dopamine
- 5-HT
serotonin
- 5-HIAA
5-hydroxyindole acetic acid
- GSH
glutathione
- SOD
superoxide dismutase
References
- De Castro ESE, Ferreira H, Cunha M, Bulcao C, Sarmento C, De Oliveira I, Fregoneze JB. Effect of central acute administration of cadmium on drinking behavior. Pharmacol Biochem Behav. 1996;53:687–693. doi: 10.1016/0091-3057(95)02070-5. [DOI] [PubMed] [Google Scholar]
- Dringen R, Gutterer JM, Hirrlinger J. Glu-tathione metabolism in brain metabolic interaction between astrocytes and neurons in the defense against reactive oxygen species. Eur. J. Biochem. 2000;267:4912–4916. doi: 10.1046/j.1432-1327.2000.01597.x. [DOI] [PubMed] [Google Scholar]
- Flora SJ, Mittal M, Mehta A. Heavy metal induced oxidative stress & its possible reversal by chelation therapy. Indian J. Med. Res. 2008;128:501–523. [PubMed] [Google Scholar]
- Kabeer IA, Rajender RJ, Desaiah D. Protection against cadmium toxicity and enzyme inhibition by dithiothreitol. Cell. Biochem. Funct. 1989;7:185–192. doi: 10.1002/cbf.290070306. [DOI] [PubMed] [Google Scholar]
- Kakkar P, Das B, Viswanathan PN. A modified spectroscopic assay of superoxide dismutase. Ind. J. Biochem. Biophys. 1984;21:130–132. [PubMed] [Google Scholar]
- Kim DH, Hung TM, Bae KH, Jung JW, Lee S, Yoon BH, Cheong JH, Ko KH, Ryu JH. Gomisin A improves scopolamine-induced memory impairment in mice. Eur. J. Pharmacol. Aug. 2006;7(542):129–135. doi: 10.1016/j.ejphar.2006.06.015. [DOI] [PubMed] [Google Scholar]
- Ko KM, Ip SP, Poon MK, Wu SS, Che CT, Ng KH, Kong YC. Effect of a lignan-enriched fructus schisandrae extract on hepatic glutathione status in rats: protection against carbon tetrachloride toxicity. Planta Med. 1995;61:134–137. doi: 10.1055/s-2006-958032. [DOI] [PubMed] [Google Scholar]
- Kumar R, Agarwal AK, Seth PK. Oxidative stress-mediated neurotoxicity of cadmium. Toxicol. Lett., Dec. 1996;89:65–69. doi: 10.1016/S0378-4274(96)03780-0. [DOI] [PubMed] [Google Scholar]
- Lowry OH, Rosenbrough NJ, Farr AI, Randall RJ. Protein measurement with the folin-phenol reagent. J. Biol. Chem. 1951;193:265–275. [PubMed] [Google Scholar]
- Lu YJ, Ma Y, Li XM, Sun GG, Han F. The effect of Chinese mushroom (Huangmo) polysaccharides on monoamine neurotransmitter in the aging mice. Chinese Journal of Gerontology. 2007;12:61–63. [Google Scholar]
- Lupandin AV, Ovsyanikova VY. Increasing resistance to unfavourable factors under the effect of Schizandra chinensis extract. In: Brekhman II, editor. Physiological Mechanisms of Adaptation, Ivanovo State University, Ivanovo. 1986. pp. 92–97. [Google Scholar]
- Moron MS, Despierre JW, Minnervik B. Levels of glutathione, glutathione reductase and glutathione-S-transferase activities in rat lung and liver. Biochim. Bio-phys. Acta. 1979;582:67–78. doi: 10.1016/0304-4165(79)90289-7. [DOI] [PubMed] [Google Scholar]
- Murugavel P, Pari L. Effects of diallyl tetrasul-fide on cadmium-induced oxidative damage in the liver of rats. Hum. Exp. Toxicol., Jun. 2007;26:527–534. doi: 10.1177/0960327107073810. [DOI] [PubMed] [Google Scholar]
- Nawrot T, Plusquin M, Hogervorst J, Roels HA, Celis H, Thijs L. Environmental exposure to cadmium and risk of cancer: a prospective population-based study. Lancet Oncol. 2006;7:119–126. doi: 10.1016/S1470-2045(06)70545-9. [DOI] [PubMed] [Google Scholar]
- Numagami Y, Sato S, Ohnishi ST. Attenuation of rat ischemic brain damage by aged garlic extracts: a possible protecting mechanism as antioxidants. Neuro-chem. Int. 1996;29:135–143. doi: 10.1016/0197-0186(95)00117-4. [DOI] [PubMed] [Google Scholar]
- Pillai A, Priya L, Gupta S. Effects of combined exposure to lead and cadmium on the hypothalamic-pituitary axis function in proestrous rats. Food Chem. Toxicol., Mar. 2003;41:379–384. doi: 10.1016/S0278-6915(02)00247-8. [DOI] [PubMed] [Google Scholar]
- Rahman K. Garlic and aging: new insights into an old remedy. Age. Res. Rev. 2003;2:39–56. doi: 10.1016/S1568-1637(02)00049-1. [DOI] [PubMed] [Google Scholar]
- Rigon AP, Cordova FM, Oliveira CS, Posser T, Costa AP, Silva IG, Santos DA, Rossi FM, Rocha JB, Leal RB. Neurotoxicity of cadmium on immature hippocampus and a neuroprotective role for p38 MAPK. Neurotoxicolog., Jul. 2008;29:727–734. doi: 10.1016/j.neuro.2008.04.017. [DOI] [PubMed] [Google Scholar]
- Stohs SJ, Bagch ID. Oxidative mechanisms in the toxicity of metal ions. Free Radical Bio. Ind. Med. 1995;18:321–336. doi: 10.1016/0891-5849(94)00159-H. [DOI] [PubMed] [Google Scholar]
- Wang JP, Raung SL, Hsu MF, Chen CC. Inhibition by gomisin C (a lignan from Schizandra chinensis) of the respiratory burst of rat neutrophils. British Journal of Pharmacology. 1994;113:945–953. doi: 10.1111/j.1476-5381.1994.tb17084.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Webster WS, Valois AA. The toxic effect of cadmium on the neonatal mouse CNS. J. Neuropathol. Exp. Neurol. 1981;40:247–257. doi: 10.1097/00005072-198105000-00003. [DOI] [PubMed] [Google Scholar]
- Xu YJ, Li GZ, Xu SJ. Effects of germanium oxide on cadmium-induced change of acetylcholinesterase activity and catecholamine neurotransmitters in mice brain. J. Environ. Health, July. 2006;23:313–315. [Google Scholar]
- Xu YJ, Han CJ, Li LJ. Effects of Hippophae Rhamnoides L juice on lead-induced change of lipid peroxidation, acetylcholinesterase and catecholamine neu-rotransmitters in mice brain. J. Medical. Science Yanbian Univ., Mar. 2006;29:20–23. [Google Scholar]
- Xue JY, Liu GT, Wei HL, Pan Y. Antioxidant activity of two dibenzocyclooctene lignans on the aged and ischemic brain in rats. Free Radical Biology and Medicine. 1992;12:127–135. doi: 10.1016/0891-5849(92)90006-3. [DOI] [PubMed] [Google Scholar]
- Zhu YP. Chinese Materia Medica Chemistry, Pharmacology and Applications, Harwood Academic Publishers. 1998. pp. 653–657. [Google Scholar]
