Anti-apoptosis effect of polysaccharide isolated from the seeds of Cuscuta chinensis Lam on cardiomyocytes in aging rats

被引：68

作者：

Sun, Shou-Li ^{[1
]}

Guo, Li ^{[2
]}

Ren, Ya-Chao ^{[1
]}

Wang, Bing ^{[1
]}

Li, Rong-Hui ^{[3
]}

Qi, Yu-Shan ^{[1
]}

Yu, Hui ^{[1
]}

Chang, Nai-Dan ^{[1
]}

Li, Ming-Hui ^{[1
]}

Peng, Hai-Sheng ^{[1
]}

机构：

[1] Harbin Med Univ, Qaqing, Peoples R China

[2] Harbin Med Univ, Dept Anesthesiol, Affiliated Hosp 1, Harbin, Peoples R China

[3] Mudanjiang Med Coll, Hongqi Hosp, Mudanjiang, Peoples R China

来源：

MOLECULAR BIOLOGY REPORTS | 2014年 / 41卷 / 09期

关键词：

Polysaccharide; Cuscuta chinensis Lam; Apoptosis; Aging rat model; Cardiomyocytes; ENDOPLASMIC-RETICULUM STRESS; CELL-DEATH; CARCINOMA-CELLS; BCL-2; MITOCHONDRIA; GLYCOSIDE; PATHWAYS; FAMILY; BAX;

D O I：

10.1007/s11033-014-3490-1

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

070307 [化学生物学]; 071010 [生物化学与分子生物学];

摘要：

To investigate the mechanism of apoptosis in myocardial cells of aging rats induced by d-galactose and to study the effect of the Polysaccharide isolated from the seeds of Cuscuta chinensis Lam (PCCL) on apoptosis of cardiomyocytes and its corresponding machinasim in aging rat model. Fifty male SD rats were randomly divided into 5 groups. Normal control group (NC). d-galactose (100 mg center dot kg(-1)d(-1) for 56 day) indued aging group (MC), d-galactose plus 100 mg kg(-1) d(-1) PCCL group (ML), d-galactose plus 200 mg kg(-1) d(-1) PCCL group (MM), and d-galactose plus 400 mg kg(-1) d(-1) PCCL group (MH). Same volume of solution (water, or PCCL aqueous solution) was given by gavage for 56 days. Then the hearts were collected and apoptosis parameters were evaluated. Caspase-3 and Cyt c were determined by fluorescence spectrometer, the apoptosis rate was assessed by AnnexinV-FITC method by Flow-Cytometry, [Ca2+]i and [Ca2+]i overloaded by KCL were observed by laser scanning confocal microscopy (LSCM); Bcl-2 and Bax were examined by immunohistochemistry. The content of Cyt C, [Ca2+]i of cardiomyocytes, the activity of Caspase-3, Bax expression level in d-galactose induced aging group were higher than NC (p < 0.05). The ratio of Bcl-2/Bax was decreased in d-galactose induced aging group compared to NC. On the other hand, the content of Cyt C, [Ca2+]i of cardiomyocytes, the activity of Caspase-3 and apoptosis rate, as well as Bax expression level in all three PCCL groups were decreased compared to galactose induced group (p < 0.05). Bcl-2/Bax ratio was increased in all PCCL groups compared to galactose induced aging group. PCCL could decrease the apoptosis of cardiomyocytes by the mitochondria apoptosis pathway.

引用

页码：6117 / 6124

页数：8

共 32 条

[1]

Structural features of an immunostimulating and antioxidant acidic polysaccharide from the seeds of Cuscuta chinensis [J].