Primary exploration of integrating the humanistic quality education into histology and embryology teaching / 中华医学教育探索杂志

In order to enable the teachers of professional basic courses to play a role adequately in teaching and educating students, the elements of humanistic quality education are excavated from Histology and Embryology chapters and integrated with professional basic knowledges. The effects of teaching are tested through students' writing experience, teachers' interview and national peer review. The results show that students have received the education of gratitude, dedication and responsibility, meanwhile their enthusiasm for learning has been significantly improved. Teachers believe that teaching and learning has achieved self-education at the same time. The national colleagues agree that it's feasible to integrate humanistic quality education into the teaching process of professional basic courses, and the better teaching effect is also be achieved.

L-arginine promotes the repair process of endothelium in ischemia-reperfused arteries of rats / 中华创伤杂志(英文版)

OBJECTIVE: To observe effects of arginine on art erial endothelium injured by ischemia-reperfusion (IR), and explore its possibl e mechanism. METHODS: Fifty-four rats were divided into 3 groups and treate d in respective ways: (1) drinking tap water as the control; (2) drinking tap wa ter containing 2.5% L-arginine; (3) drinking tap water containing 2.5% L-arginine together with intraperitoneal injection of N(G)-nitro-L-arginine methylester 5 mg/kg/d. A segment of the common carotid artery was occluded for 1 h, and then reperfused. Samples taken at different post-IR t ime from the segment were prepared for the ultrastructural and Ce-H(2)O(2) cyto chemical observation. The naked index (NI) of internal elastic lamina (IEL) was measured for comparing the endothelial injure extent and its repair process. RESULTS: Less damage of endothelial cells (EC), more platelets adhering to naked IEL and more regenerating EC were observed in Group 2. The NI values of samples taken at 1, 2, 3 d after the IR were respectively 0.92plus minus0.08, 0.88plus minus0.03 and 0.41plus minus0.02 in Group 1, and reduced to 0.52plus minus0.05, 0.19plus minus0.08 and 0.06plus minus0.01 in Grou p 2 (P<0.05-0.01). In Group 3, the endothelium da mage was not alleviated, and so were the NI. The Ce-H(2)O(2) particles deposite d on the lumen surface of endothelium were much less in Group 2 than in Groups 1 and 3. CONCLUSIONS: L-arginine promotes the repair process of IR-in jured endothelium probably through the removal of oxygen free radicals by NO.