ABSTRACT
The characteristics of self-renewal and multilineage differentiation potential of neural stem cells(NSC)provide a new strategy for the treatment of ischemic brain sequelae.It is of great significance to find out new drugs that regulate the proliferation of endogenous NSC for the damage of nerve cells and the change of microenvironment in the brain.This review summarizes the prog?ress of Wnt signaling pathway in regulating NSC proliferation,related drug targets and the current research status of Chinese herbal medicines in regulating NSC proliferation,in order to provide a reference for future studies on new drugs for the prevention and treat?ment of ischemic brain sequelae.
ABSTRACT
At the moment,neural stem cells(NSC)therapy is one of the main means to improve stroke and neurodengenera?tive disease. This paper analyses the key molecular targets that promote NSC migration,such as chemokines,brain-derived neuro?trophic factor and vascular endothelial growth factor,and clarifies the relationships as well as important nodes between pathways,like PI3K/Akt,MAPK/ERK,and JAK/STAT.It is helpful to understand the molecular network mechanisms of NSC migration and provide ideas and targets to design creative drugs to promote NSC migration.
ABSTRACT
In this study, it is to compare the effectiveness of prevention against and treatment of doxorubicin (DOX) induced cardiotoxicity by dexrazoxane and schisandrin B (Sch B) in rats. Sprague-Dawley (SD) rats were randomly divided into the following 6 groups: normal saline group, DOX group, DOX+DEX group, DOX+Sch B (80 mg x kg(-1)) group, DOX+Sch B (40 mg x kg(-1)) group and DOX+Sch B (20 mg x kg(-1)) group. The results showed that Sch B could combat the increase of myocardial enzymes in peripheral blood, decrease of the enzyme activity of myocardial tissue antioxidant enzymes and disorders of systolic and diastolic function of heart in rats intravenously injected with doxorubicin (15 mg x kg(-1)). Sch B was better than DEX in protecting rat against DOX-induced the symptoms. Sch B could protect rat against DOX-induced acute cardiomyopathy and has clinical potential applications.
Subject(s)
Animals , Rats , Antibiotics, Antineoplastic , Antioxidants , Metabolism , Cardiomyopathies , Drug Therapy , Cardiotoxicity , Drug Therapy , Cyclooctanes , Therapeutic Uses , Dexrazoxane , Therapeutic Uses , Doxorubicin , Heart , Lignans , Therapeutic Uses , Myocardium , Polycyclic Compounds , Therapeutic Uses , Rats, Sprague-DawleyABSTRACT
<p><b>OBJECTIVE</b>To investigate the psychosocial status and related factors among university students during severe acute respiratory syndrome (SARS) epidemic in Beijing.</p><p><b>METHODS</b>By means of stratified cluster sampling, symptom checklist-90 (SCL-90) and questionnaire on general information were applied among 6800 students in three universities in Beijing.</p><p><b>RESULTS</b>There were 6280 valid questionnaires gathered. In order to control and prevent SARS, strict management was conducted in three universities which providing various social supports. Out of the 6280 students, 460 had SCL-90 positive symptoms with a rate of 7.3%. Risk factors of SCL-90 positive symptom were found as follows: major in arts (OR = 2.00), misconception on the control and prevention of SARS (OR = 1.91), considering measures non-effective (OR = 2.25), and do not believe that SARS can be under control (OR = 3.57). Protective factors of SCL-90 positive symptom would include as: being female (OR = 0.77), being graduate students (OR = 0.38), and being not much influenced on study and daily life during the period of strict management (OR = 0.54).</p><p><b>CONCLUSION</b>Psychosocial status of students was influenced by their knowledge and attitude on SARS. Various social supports might keep the university students to having a healthy psychosocial status.</p>