Hossain Shahdat, Bhowmick Sujan, Islam Saiful, Rozario Liza, Jahan Sabrin, Hassan Mehedi, Sarkar Marzan, Choudhury Bazlul Karim, Ahmed Sohel, Shahjalal Hussain
Department of Biochemistry and Molecular Biology, Laboratory of Alternative Medicine and Behavioral Neurosciences, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh.
Manikganj Medical College, Manikganj, Dhaka 1800, Bangladesh.
Evid Based Complement Alternat Med. 2015;2015:463703. doi: 10.1155/2015/463703. Epub 2015 Aug 2.
We studied the effect of chronic oral exposure to lead acetate (PbA) on the sensitivity of RBC to hemolysis and whether the sensitivity could be decreased by feeding the rats with extract of medicinal mushroom Ganoderma lucidum. Three groups of rats, control, PbA-exposed, and G. lucidum (Gl)+PbA, were used. PbA (3 mM) was administered via drinking water and G. lucidum extract by gavage at 300 mg/Kg BW/day for 12 weeks. Afterwards, the rats were killed and washed RBCs were subjected to hemolysis in the presence of Fenton's reagents. Hemolysis was determined by estimating the amount of released hemoglobin. The levels of lipid peroxide (LPO) and GSH were determined from RBC membranes and whole RBCs, respectively. The levels of TNFα and LPO also were determined from hepatic tissues. The RBCs of PbA-exposed rats displayed significantly higher sensitivity to hemolysis than those of the Gl+PbA rats. The levels of LPO increased and GSH decreased in the RBCs, with concomitant increases in the levels of hepatic TNFα and LPO in the PbA-exposed rats. The degree of hemolysis was significantly low in the RBCs of Gl+PbA rats, concurrently with amelioration of hepatic parameters. Finally, the study suggests that PbA-induced-hemolysis and related oxidative-toxicity might be minimized by consumption of G. lucidum.
我们研究了长期口服醋酸铅(PbA)对红细胞溶血敏感性的影响,以及给大鼠喂食灵芝提取物是否能降低这种敏感性。实验使用了三组大鼠,分别为对照组、PbA暴露组和灵芝(Gl)+PbA组。通过饮用水给予PbA(3 mM),并通过灌胃给予灵芝提取物,剂量为300 mg/Kg体重/天,持续12周。之后,处死大鼠,对洗涤后的红细胞在芬顿试剂存在的情况下进行溶血实验。通过估算释放的血红蛋白量来测定溶血情况。分别从红细胞膜和全红细胞中测定脂质过氧化物(LPO)和谷胱甘肽(GSH)的水平。还从肝组织中测定肿瘤坏死因子α(TNFα)和LPO的水平。与灵芝+PbA组大鼠相比,PbA暴露组大鼠的红细胞对溶血表现出显著更高的敏感性。在PbA暴露组大鼠中,红细胞中LPO水平升高,GSH水平降低,同时肝组织中TNFα和LPO水平也升高。灵芝+PbA组大鼠红细胞的溶血程度显著较低,同时肝脏参数也有所改善。最后,该研究表明,食用灵芝可能会使PbA诱导的溶血及相关氧化毒性降至最低。