糖尿病的发生率逐渐升高,尤其是2型糖尿病。随着糖尿病病程的增加,各项并发症的发病率也随之升高。尤其是2型糖尿病导致的慢性并发症,对人们的健康、心理及经济等各个方面均有一定的影响。近几年的研究均表明了脂质代谢对糖尿病的发病...糖尿病的发生率逐渐升高,尤其是2型糖尿病。随着糖尿病病程的增加,各项并发症的发病率也随之升高。尤其是2型糖尿病导致的慢性并发症,对人们的健康、心理及经济等各个方面均有一定的影响。近几年的研究均表明了脂质代谢对糖尿病的发病机制及其并发症的发生及进展有一定的影响。载脂蛋白B/A-1比值作为新的代谢紊乱标志物的指标之一,可评价糖尿病患者血管相关并发症。本文就载脂蛋白B/A-1比值在2型糖尿病血管并发症中的作用的相关研究进行综述。The prevalence of type 2 diabetes is on the rise, leading to an increase in associated complications over time. In particular, the chronic complications caused by type 2 diabetes have a certain impact on people’s health, psychology and economy. Recent studies have highlighted the impact of lipid metabolism on the development and progression of diabetes-related complications. Given that the ApoB/A-1 ratio can serve as a valuable indicator for assessing metabolic disorders and evaluating chronic complications in patients with diabetes. This review provides an overview of relevant research concerning the role of ApoB/A-1 ratio in vascular complications of type 2 diabetes.展开更多
Radiation is an important modality in cancer treatment, and eighty percent of cancer patients need radiotherapy at some point during their clinical management. However, radiation-induced damage to normal tissues restr...Radiation is an important modality in cancer treatment, and eighty percent of cancer patients need radiotherapy at some point during their clinical management. However, radiation-induced damage to normal tissues restricts the therapeutic doses of radiation that can be delivered to tumours and thereby limits the effectiveness of the treatment. The use of radioprotectors represents an obvious strategy to obtain better tumour control using a higher dose in radiotherapy. However, most of the synthetic radioprotective compounds studied have shown inadequate clinical efficacy owing to their inherent toxicity and high cost. Hence, the development of radioprotective agents with lower toxicity and an extended window of protection has attracted a great deal of attention, and the identification of alternative agents that are less toxic and highly effective is an absolute necessity. Recent studies have shown that alpha-2-macroglobulin（α2M） possesses radioprotective effects. α2M is a tetrameric, disulfide-rich plasma glycoprotein that functions as a nonselective inhibitor of different types of non-specific proteases and as a carrier of cytokines, growth factors, and hormones. α2M induces protein factors whose interplay underlies radioprotection, which supports the idea that α2M is the central effector of natural radioprotection in the rat. Pretreatment with α2M has also induced a significant reduction of irradiation-induced DNA damage and the complete restoration of liver and body weight. Mihailovi？ et al. concluded that the radioprotection provided by α2M was in part mediated through cytoprotection of new blood cells produced in the bone marrow; these authors also indicated that an important aspect of the radioprotective effect of amifostine was the result of the induction of the endogenous cytoprotective capability of α2M. The radioprotective effects of α2M are possibly due to antioxidant, antifibrosis, and anti-inflammatory functions, as well as the maintenance of homeostasis, and enhancement of the DNA repair and cell recovery processes. This review is the first to summarise the observations and elucidate the possible mechanisms responsible for the beneficial effects of α2M. The lacunae in the existing knowledge and directions for future research are also addressed.展开更多
Background:Myocardial infarction(MI)is known worldwide for its important disabling features,including myocarditis and cardiomyocyte apoptosis.It is believed that microRNA(miRNA)has a role in the cellular processes of ...Background:Myocardial infarction(MI)is known worldwide for its important disabling features,including myocarditis and cardiomyocyte apoptosis.It is believed that microRNA(miRNA)has a role in the cellular processes of apoptosis and myocarditis,and miR-219a-5p has been found to suppress the inflammatory response.However,unknown is the precise mechanism by which miR-219a-5p contributes to MI.Methods:We measured the expression of miR-219a-5p and evaluated its effects on target proteins,inflammatory factors,and apoptosis in a mouse model of MI.Echocardiography was utilized to examine the MI clinical index,and triphenyl tetrazolium chloride staining was employed to analyze the infarcted region.Enzyme-linked immunosorbent assay and Western blotting measured serum and molecular markers in heart tissues.To quantify the association with miR-219a-5p and ATPase sarcoplasmic/endoplasmic reticulum Ca^(2+) transporting 2(ATP2A2),the luciferase activity assay and Pearson’s correlation analysis were employed.Results:MiR-219a-5p exhibited low expression in a mouse model of MI,and its amplification prevented both apoptotic and inflammatory reactions.Specifically,miR-219a-5p targeted ATP2A2.Conclusion:In a mouse model of MI,miR-219a-5p exerted a potent protective effect via direct targeting of ATP2A2.展开更多
文摘糖尿病的发生率逐渐升高,尤其是2型糖尿病。随着糖尿病病程的增加,各项并发症的发病率也随之升高。尤其是2型糖尿病导致的慢性并发症,对人们的健康、心理及经济等各个方面均有一定的影响。近几年的研究均表明了脂质代谢对糖尿病的发病机制及其并发症的发生及进展有一定的影响。载脂蛋白B/A-1比值作为新的代谢紊乱标志物的指标之一,可评价糖尿病患者血管相关并发症。本文就载脂蛋白B/A-1比值在2型糖尿病血管并发症中的作用的相关研究进行综述。The prevalence of type 2 diabetes is on the rise, leading to an increase in associated complications over time. In particular, the chronic complications caused by type 2 diabetes have a certain impact on people’s health, psychology and economy. Recent studies have highlighted the impact of lipid metabolism on the development and progression of diabetes-related complications. Given that the ApoB/A-1 ratio can serve as a valuable indicator for assessing metabolic disorders and evaluating chronic complications in patients with diabetes. This review provides an overview of relevant research concerning the role of ApoB/A-1 ratio in vascular complications of type 2 diabetes.
基金supported by grant of the Science and Technology Planning Project of Guangdong Province (2010B060900052 and 2009B030801186)the Fundamental Research Funds for the Central Universities (the Young Teacher Training Project of Sun Yat-sen University 09ykpy12)the Medical Scientific Research Project of Zhuhai City (2012003)
文摘Radiation is an important modality in cancer treatment, and eighty percent of cancer patients need radiotherapy at some point during their clinical management. However, radiation-induced damage to normal tissues restricts the therapeutic doses of radiation that can be delivered to tumours and thereby limits the effectiveness of the treatment. The use of radioprotectors represents an obvious strategy to obtain better tumour control using a higher dose in radiotherapy. However, most of the synthetic radioprotective compounds studied have shown inadequate clinical efficacy owing to their inherent toxicity and high cost. Hence, the development of radioprotective agents with lower toxicity and an extended window of protection has attracted a great deal of attention, and the identification of alternative agents that are less toxic and highly effective is an absolute necessity. Recent studies have shown that alpha-2-macroglobulin（α2M） possesses radioprotective effects. α2M is a tetrameric, disulfide-rich plasma glycoprotein that functions as a nonselective inhibitor of different types of non-specific proteases and as a carrier of cytokines, growth factors, and hormones. α2M induces protein factors whose interplay underlies radioprotection, which supports the idea that α2M is the central effector of natural radioprotection in the rat. Pretreatment with α2M has also induced a significant reduction of irradiation-induced DNA damage and the complete restoration of liver and body weight. Mihailovi？ et al. concluded that the radioprotection provided by α2M was in part mediated through cytoprotection of new blood cells produced in the bone marrow; these authors also indicated that an important aspect of the radioprotective effect of amifostine was the result of the induction of the endogenous cytoprotective capability of α2M. The radioprotective effects of α2M are possibly due to antioxidant, antifibrosis, and anti-inflammatory functions, as well as the maintenance of homeostasis, and enhancement of the DNA repair and cell recovery processes. This review is the first to summarise the observations and elucidate the possible mechanisms responsible for the beneficial effects of α2M. The lacunae in the existing knowledge and directions for future research are also addressed.
基金supported by the National Nature Science Foundation of the People’s Republic of China(No.81400225 for Zulong Sheng and No.82000382 for Yanru He)the Jiangsu Provincial Medical Youth Talent(No.QNRC2016815).
文摘Background:Myocardial infarction(MI)is known worldwide for its important disabling features,including myocarditis and cardiomyocyte apoptosis.It is believed that microRNA(miRNA)has a role in the cellular processes of apoptosis and myocarditis,and miR-219a-5p has been found to suppress the inflammatory response.However,unknown is the precise mechanism by which miR-219a-5p contributes to MI.Methods:We measured the expression of miR-219a-5p and evaluated its effects on target proteins,inflammatory factors,and apoptosis in a mouse model of MI.Echocardiography was utilized to examine the MI clinical index,and triphenyl tetrazolium chloride staining was employed to analyze the infarcted region.Enzyme-linked immunosorbent assay and Western blotting measured serum and molecular markers in heart tissues.To quantify the association with miR-219a-5p and ATPase sarcoplasmic/endoplasmic reticulum Ca^(2+) transporting 2(ATP2A2),the luciferase activity assay and Pearson’s correlation analysis were employed.Results:MiR-219a-5p exhibited low expression in a mouse model of MI,and its amplification prevented both apoptotic and inflammatory reactions.Specifically,miR-219a-5p targeted ATP2A2.Conclusion:In a mouse model of MI,miR-219a-5p exerted a potent protective effect via direct targeting of ATP2A2.
