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Safety evaluation and protective effects of ethanolic extract from maca (Lepidium meyenii Walp.) against corticosterone and H2O2 induced neurotoxicity.
Regulatory Toxicology and Pharmacology ( IF 3.0 ) Pub Date : 2019-12-26 , DOI: 10.1016/j.yrtph.2019.104570
Zejun Yu 1 , Wenwen Jin 1 , Xuhui Dong 1 , Mingzhang Ao 1 , Hao Liu 1 , Longjiang Yu 1
Affiliation  

Maca has been traditionally used to enhance sexual behavior and fertility. Recently, maca's neuroprotective effects have been reported. The purpose of this study was to investigate whether the ethanol extract of maca (EEM) (100 mg/kg/bw, 200 mg/kg/bw, 400 mg/kg/bw, p.o.) exerted neuroprotective effects in corticosterone (CORT)-induced (40 mg/kg/bw, s.c.) rats, to determine the neuroprotective effects of EEM (12.5, 25, 50 μg/ml) and macamides in H2O2-induced (50 μM) PC12 cells. The acute toxicity (2000 mg/kg/bw, p.o.) and subacute toxicity (200 mg/kg/bw, 500 mg/kg/bw, 1000 mg/kg/bw, p.o.) of EEM were evaluated by mouse models. EEM reversed CORT-induced abnormal behaviors, reduced the contents of TNF-α, IL-6 in hippocampi, and increased the positive cells of doublecortin (DCX), bromodeoxyuridine (BrdU) and DCX + BrdU in the hippocampus of rats. Moreover, EEM and 4 macamides remarkably increased the cell viability in H2O2-induced PC12 cells. EEM promoted the phosphorylation of IκBα and p65, suppressed the NF-κB activation, and inhibited the levels of pro-inflammatory cytokines such as TNF-α, IL-6 and their mRNA levels in H2O2-induced PC12 cells. In conclusion, EEM could exert neuroprotective effects in CORT-induced rats and in H2O2-induced PC12 cells. Moreover, EEM did not present relevant toxicity after exposure to single and repeated doses.

中文翻译:

玛咖(Lepidium meyenii Walp。)乙醇提取物对皮质酮和H2O2诱导的神经毒性的安全性评估和保护作用。

玛卡传统上一直用于增强性行为和生育能力。最近,已经报道了玛咖的神经保护作用。这项研究的目的是调查玛卡(EEM)乙醇提取物(100 mg / kg / bw,200 mg / kg / bw,400 mg / kg / bw,po)是否对皮质酮(CORT)发挥神经保护作用-诱导(40 mg / kg / bw,sc)大鼠,以确定EEM(12.5、25、50μg/ ml)和甲酰胺对H2O2诱导(50μM)PC12细胞的神经保护作用。通过小鼠模型评估了EEM的急性毒性(2000 mg / kg / bw,po)和亚急性毒性(200 mg / kg / bw,500 mg / kg / bw,1000 mg / kg / bw,po)。EEM逆转了CORT诱导的异常行为,降低了海马中海马中TNF-α,IL-6的含量,并增加了双皮质素(DCX),溴脱氧尿苷(BrdU)和DCX + BrdU的阳性细胞。此外,EEM和4种甲酰胺显着提高了H2O2诱导的PC12细胞的细胞活力。EEM促进了H2O2诱导的PC12细胞中IκBα和p65的磷酸化,抑制了NF-κB的活化,并抑制了TNF-α,IL-6等促炎细胞因子的水平及其mRNA水平。总之,EEM可以在CORT诱导的大鼠和H2O2诱导的PC12细胞中发挥神经保护作用。此外,EEM暴露于单次和重复剂量后没有表现出相关的毒性。EEM可以在CORT诱导的大鼠和H2O2诱导的PC12细胞中发挥神经保护作用。此外,EEM暴露于单次和重复剂量后没有表现出相关的毒性。EEM可以在CORT诱导的大鼠和H2O2诱导的PC12细胞中发挥神经保护作用。此外,EEM暴露于单次和重复剂量后没有表现出相关的毒性。
更新日期:2019-12-27
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