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Positive regulation of biochemical parameters by tea polyphenol encapsulated solid lipid nanoparticles at in vitro and in vivo conditions

机译:茶多酚包裹的固体脂质纳米粒在体外和体内条件下对生化参数的正调控

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Tea polyphenols (TPPs) comprise preventive and therapeutic potentials against cancer, cardiovascular and neurological disorders. Chemical instability of TPP which leads to low bioavailability is the major constrain to its use as therapeutic agent. The authors prepared TPP encapsulated solid lipid nanoparticles (TPP-SLNs) to increase its stability and bioefficacy. Comparison of Fourier transformed infrared spectra of unloaded SLN, free TPP and TPP-SLN indicated encapsulation of TPP. Sustained release of TPP from TP-SLN was observed. TPP-SLN showed prolonged free radical scavenging activity compared with free TPP indicating protection of TPP. TPP-SLN showed activation of Caspases-9 and -3 cascades in breast cancer cell line (Michigan cancer foundation (MCF)-7) at in vitro conditions. Biochemical parameters were altered in Ehrlich ascetic carcinoma (EAC) cell bearing mice compared with normal (uninduced) mice which were ameliorated significantly by oral feeding of TPP-SLN. Oral administration (pre- and post-treated) of TPP-SLN in EAC bearing mice resulted in significant increase of plasma haemoglobin, glucose, superoxide dismutase and catalase when compared with EAC bearing control mice. Other biochemical parameters (cholesterol, bilirubin, triglyceride, urea, total protein, alanine aminotransferase, alkaline phosphatase and aspertate transaminase were significantly decreased on oral administration (pre- and post-treated) of TPP-SLN in EAC bearing mice.
机译:茶多酚(TPP)具有预防和治疗癌症,心血管和神经系统疾病的潜力。 TPP的化学不稳定性(导致生物利用度低)是其用作治疗剂的主要限制。作者制备了TPP封装的固体脂质纳米颗粒(TPP-SLN),以提高其稳定性和生物功效。空载SLN,游离TPP和TPP-SLN的傅立叶变换红外光谱比较表明TPP包封。观察到TPP从TP-SLN持续释放。与游离TPP相比,TPP-SLN表现出延长的自由基清除活性,表明对TPP具有保护作用。 TPP-SLN在体外条件下显示了乳腺癌细胞系(密歇根州癌症基金会(MCF)-7)中Caspases-9和-3级联的激活。与正常(未诱导)小鼠相比,荷尔利希(Ehrlich)小鼠(EAC)细胞携带的小鼠的生化参数发生了变化,通过口服TPP-SLN可以显着改善小鼠。与携带EAC的对照小鼠相比,在EAC携带的小鼠中口服TPP-SLN(治疗前和后)导致血浆血红蛋白,葡萄糖,超氧化物歧化酶和过氧化氢酶显着增加。在接受EAC的小鼠中口服TPP-SLN(治疗前和治疗后),其他生化参数(胆固醇,胆红素,甘油三酯,尿素,总蛋白,丙氨酸氨基转移酶,碱性磷酸酶和天冬氨酸转氨酶)均显着降低。

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