目的探讨磷酸鞘胺醇(sphingosine 1-phosphate,S1P)是否参与Kk Ay 2型糖尿病小鼠胰腺纤维化的发生,这一过程是否和转化生长因子-β1(transforming growth factor-β1,TGF-β1)相关。方法应用Real-time RTPCR的方法检测Kk Ay 2型糖尿病...目的探讨磷酸鞘胺醇(sphingosine 1-phosphate,S1P)是否参与Kk Ay 2型糖尿病小鼠胰腺纤维化的发生,这一过程是否和转化生长因子-β1(transforming growth factor-β1,TGF-β1)相关。方法应用Real-time RTPCR的方法检测Kk Ay 2型糖尿病小鼠及C57小鼠胰腺中鞘胺醇激酶1(Sph K1)的mRNA水平,并检测反映胰腺星状细胞活化的指标平滑肌肌动蛋白α(α-smooth muscle actin,α-SMA)、TGF-β1以及细胞外基质的主要成分Ⅰ型胶原[collagenα1(Ⅰ),Colα1(Ⅰ)]和Ⅲ型胶原[collagenα1(Ⅲ),Colα1(Ⅲ)]的水平。结果与对照组C57小鼠相比,Kk Ay 2型糖尿病小鼠胰腺高表达Sph K1、TGF-β1、α-SMA、Colα1(Ⅰ)及Colα1(Ⅲ),并且Sph K1与TGF-β1存在明显正相关。结论磷酸鞘胺醇可能参与了Kk Ay 2型糖尿病小鼠胰腺纤维化的发生,并且这一过程可能与TGF-β1相关。展开更多
The novel heparinase-producing bacterial strain Sphingobacterium sp. was isolated and screened from soil. The optimum medium composition is (g/L): Soytone 20, NaCl 1, K2HPO4 2.5, MgSO4 0.5, Heparin 2, Sucrose 15, pH...The novel heparinase-producing bacterial strain Sphingobacterium sp. was isolated and screened from soil. The optimum medium composition is (g/L): Soytone 20, NaCl 1, K2HPO4 2.5, MgSO4 0.5, Heparin 2, Sucrose 15, pH 7.5. The optimum temperature for growth and enzyme production was 32℃. When cultured at a rotating shaker at 30℃ for 36 hours, 200r/min, 50mL medium in 500mL flask, the production of heparinase reached 4000U/L.展开更多
文摘目的探讨磷酸鞘胺醇(sphingosine 1-phosphate,S1P)是否参与Kk Ay 2型糖尿病小鼠胰腺纤维化的发生,这一过程是否和转化生长因子-β1(transforming growth factor-β1,TGF-β1)相关。方法应用Real-time RTPCR的方法检测Kk Ay 2型糖尿病小鼠及C57小鼠胰腺中鞘胺醇激酶1(Sph K1)的mRNA水平,并检测反映胰腺星状细胞活化的指标平滑肌肌动蛋白α(α-smooth muscle actin,α-SMA)、TGF-β1以及细胞外基质的主要成分Ⅰ型胶原[collagenα1(Ⅰ),Colα1(Ⅰ)]和Ⅲ型胶原[collagenα1(Ⅲ),Colα1(Ⅲ)]的水平。结果与对照组C57小鼠相比,Kk Ay 2型糖尿病小鼠胰腺高表达Sph K1、TGF-β1、α-SMA、Colα1(Ⅰ)及Colα1(Ⅲ),并且Sph K1与TGF-β1存在明显正相关。结论磷酸鞘胺醇可能参与了Kk Ay 2型糖尿病小鼠胰腺纤维化的发生,并且这一过程可能与TGF-β1相关。
文摘The novel heparinase-producing bacterial strain Sphingobacterium sp. was isolated and screened from soil. The optimum medium composition is (g/L): Soytone 20, NaCl 1, K2HPO4 2.5, MgSO4 0.5, Heparin 2, Sucrose 15, pH 7.5. The optimum temperature for growth and enzyme production was 32℃. When cultured at a rotating shaker at 30℃ for 36 hours, 200r/min, 50mL medium in 500mL flask, the production of heparinase reached 4000U/L.