ABSTRACT
Moringa oleifera is a typical tropical multi-functional fast-growing tree species， which is native to India and now widely planted in various tropical regions. After some research and textual research， the records of M. oleifera in China can be traced back to the The Bower Manuscript（volume Ⅱ）（about the 4th—6th century A.D.） unearthed in Kuqa， Xinjiang. M. oleifera contains a variety of active ingredients such as flavonoids， alkaloids， glycosides， organic esters and rich nutrients， which has outstanding medicinal and economic value. As a result， M. oleifera is widely used in food additives， water purification agents， medicine and health care and other fields. In 2012， the Ministry of Health approved M. oleifera as a new resource food. In the current trend of medicine diet and health preservation of traditional Chinese medicine， M. oleifera stands out， which not only expands the direction for the development of health products， but also enriches the development demand of traditional Chinese medicine in our country. However， in our country， the research on M. oleifera is mainly focused on the extraction of chemical components， analysis of nutritional components， consumption and content determination， and the research on its composition and pharmacological action is one-sided. For this purpose， this paper briefly reviewed the active components， hypoglycemic and treatment of diabetic complications， hypolipidemic， antioxidant， anti-inflammatory and applied research status of M. oleifera， and looked forward to the future development and utilization of M. oleifera leaves in China.
ABSTRACT
Objective: To determine the anti-neuroinflammatory activity of Moringa oleifera leaf extract (MLE) under lipopolysaccharide stimulation of mouse murine microglia BV2 cells in vitro. Methods: The cytotoxicity effect of MLE was investigated by 3-(4, 5-dimethylthiazol-2-yl)-2, 5- diphenyl-tetrazolium bromide assay. The inflammatory response of BV-2 cells were induced with lipopolysaccharide. The generation of nitric oxide levels was determined by using Griess assay and the level of pro-inflammatory cytokines (IL-1β, IL-6 and TNF-α) was evaluated by ELISA kit. The expression of iNOS, COX-2 as well as IκB-α was carried out by immunoblot analysis. Results: MLE reduced the nitric oxide production in concentration-dependent manner, and maintained the viability of BV-2 microglial cells which indicated absence of toxicity. In addition, MLE repressed the activation of nuclear factor kappa B by arresting the deterioration of IκB-α, consequently resulted in suppression of cytokines expression such as COX-2 and iNOS. Conclusions: MLE inhibitory activities are associated with the inhibition of nuclear factor kappa B transcriptional activity in BV2 microglial cells. Thus MLE may offer a substantial treatment for neuroinflammatory diseases.
ABSTRACT
Objective: To determine the anti-neuroinflammatory activity of Moringa oleifera leaf extract (MLE) under lipopolysaccharide stimulation of mouse murine microglia BV2 cells in vitro. Methods: The cytotoxicity effect of MLE was investigated by 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyl-tetrazolium bromide assay. The inflammatory response of BV-2 cells were induced with lipopolysaccharide. The generation of nitric oxide levels was determined by using Griess assay and the level of pro-inflammatory cytokines (IL-1β, IL-6 and TNF-α) was evaluated by ELISA kit. The expression of iNOS, COX-2 as well as IκB-α was carried out by immunoblot analysis. Results: MLE reduced the nitric oxide production in concentration-dependent manner, and maintained the viability of BV-2 microglial cells which indicated absence of toxicity. In addition, MLE repressed the activation of nuclear factor kappa B by arresting the deterioration of IκB-α, consequently resulted in suppression of cytokines expression such as COX-2 and iNOS. Conclusions: MLE inhibitory activities are associated with the inhibition of nuclear factor kappa B transcriptional activity in BV2 microglial cells. Thus MLE may offer a substantial treatment for neuroinflammatory diseases.
ABSTRACT
Background: Medicinal plants constitute an important source of potential therapeutic agents for diabetes. Objective: In the study, we aimed to investigate the pre-treatment effect or preventive effects of Moringa oleifera (MO) leaves on blood sugar of rats. Materials and method: This experimental study was carried out in the department of Pharmacology and Therapeutics of Sir Salimullah Medical College in collaboration with Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka. A total 24 long Evans rats were included in this study and divided in to four groups. Hyperglycemia was induced on rats using alloxan (100 mg/kg body weight, intraperitioneally). Blood sample was collected from tail vein by tail tipping method. Pre-treatment effect or preventive role of Moringa oleifera (drumstick) leaf powder on diabetogenesis produced by Alloxan in rats was tested by giving 50 mg/rat/day Moringa oleifera leaf powder for 14 days orally as pre-treatment along with standard rat feed. Then alloxan was administered intraperitoneally on 15th day of the experiment and 50mg/rat/day Moringa oleifera leaf powder was given for 7 days as post-treatment. Results: No significant effect of MO on blood glucose level was observed on normal rats and non significant hypoglycaemic effect was found in rats that were pretreated with MO. Conclusion: The present study suggests that Moringa oleifera leaf powder did not produce any significant protective effect in diabetogenesis produced by alloxan though it has hypoglycaemic effect.
ABSTRACT
Consumption of high-fat diet (HFD) induces nonalcoholic fatty liver disease (NAFLD) and may lead to multiple complications affecting human health. In the present study, effect of Moringa oleifera leaf extract (MoLE) in alleviating HFD induced liver injury in mice has been reported. Liver histology and serum activity of hepatic marker enzymes i.e. aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP) have been studied. Lipid peroxidation (LPO), ferric reducing antioxidant power (FRAP) and reduced glutathione (GSH) were also estimated using liver homogenate. Results of the study suggested that MoLE treatment protected HFD-induced liver damage as indicated by histopathology and liver enzyme activity compared to only-HFD fed group (P<0.05). Interestingly, early signs of HFD-induced fatty liver were also alleviated by MoLE. Moreover, significant increase in endogenous antioxidant parameters and lower lipid peroxidation were found in liver of all MoLE treated groups. Results of the study indicated that MoLE has both preventive as also curative hepatoprotective activity.