Department of Physiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.
Faculty of Applied Science, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia.
Biomed Pharmacother. 2017 Dec;96:716-726. doi: 10.1016/j.biopha.2017.10.042. Epub 2017 Nov 6.
Marontades pumilum is claimed to have beneficial effects in the treatment of diabetes mellitus (DM), however the underlying mechanisms were not fully identified. In this study, we hypothesized that M. pumilum could help to enhance cellular glucose uptake and reduces pancreatic complications, which contributed towards its beneficial effects in DM.
Two parameters were measured (i) rate of glucose uptake by 3T3-L1 adipocyte cells in-vitro (ii) degree of pancreatic destruction in streptozotocin-nicotinamide induced male diabetic rats receiving M. pumilum aqueous extract (M.P) (250 and 500mg/kg/day) as reflected by levels of pancreatic oxidative stress, inflammation and apoptosis. In the meantime, phyto-chemical compounds in M.P were also identified by using LC-MS.
M.P was found able to enhance glucose uptake by 3T3-L1 adipocyte cells in-vitro while its administration to the male diabetic rats causes decreased in the fasting blood glucose (FBG), glycated haemoglobin (HbA1c), total cholesterol (TC), triglycerides (TG), low-density lipoprotein (LDL) levels but causes increased in insulin and high-density lipoprotein (HDL) levels, to near normal. Levels of oxidative stress in the pancreas as reflected by levels of lipid peroxidation product (LPO) decreased while levels of anti-oxidantive enzymes (SOD, CAT and GPx) in pancreas increased. Additionally, levels of inflammation as reflected by NF-κB p65, Ikkβ and TNF-α levels decreased while apoptosis levels as reflected by caspase-9 and Bax levels decreased. Anti-apoptosis marker, Bcl-2 levels in pancreas increased.
The ability of M.P to enhance glucose uptake and reduces pancreatic complications could account for its beneficial effects in treating DM.
据报道,矮马唐具有治疗糖尿病(DM)的有益作用,但其潜在机制尚未完全确定。在这项研究中,我们假设矮马唐可以帮助增强细胞对葡萄糖的摄取,并减少胰腺并发症,从而有助于其在 DM 中的有益作用。
测量了两个参数(i)体外 3T3-L1 脂肪细胞的葡萄糖摄取率,(ii)接受矮马唐水提物(M.P)(250 和 500mg/kg/天)的链脲佐菌素-烟酰胺诱导的雄性糖尿病大鼠的胰腺破坏程度,反映胰腺氧化应激、炎症和细胞凋亡的程度。同时,还使用 LC-MS 鉴定了 M.P 中的植物化学物质。
M.P 被发现能够增强体外 3T3-L1 脂肪细胞的葡萄糖摄取,而其对雄性糖尿病大鼠的给药导致空腹血糖(FBG)、糖化血红蛋白(HbA1c)、总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白(LDL)水平降低,但胰岛素和高密度脂蛋白(HDL)水平升高,接近正常。胰腺中氧化应激水平的降低反映在脂质过氧化产物(LPO)水平的降低,而胰腺中抗氧化酶(SOD、CAT 和 GPx)水平的升高。此外,NF-κB p65、Ikkβ和 TNF-α水平的降低反映了炎症水平的降低,而 caspase-9 和 Bax 水平的降低反映了细胞凋亡水平的降低。胰腺中抗凋亡标志物 Bcl-2 水平升高。
M.P 增强葡萄糖摄取和减少胰腺并发症的能力可以解释其在治疗 DM 中的有益作用。