1.A study on esophageal length of the adult Chinese by endoscope
Changshun LI ; Pengbo YANG ; Shuixiang HE ; Qiaoyin WANG ; Hongxia LI
Journal of Xi'an Jiaotong University(Medical Sciences) 1981;0(03):-
Objective To investigate whether there is a correlation between the esophageal length of the adult Chinese people and their height, sitting height, sex or age. Methods The length from the upper end of esophagus to the dentate line of the cardia was measured by watching esophageal cavity with endoscope. A total of 613 cases (378 males and 235 females) were studied. Results ① The average length of esophagus was (24.8?2.1)cm for male and (22.8?1.9)cm for female. The difference between male and female was statistically significant (P
2.Research progress of aptamer and organic nanomaterials based tumor targeting drug delivery systems
Yimin ZHANG ; Xinmei CAI ; Shan ZHOU ; Junyun CHENG ; Ying WANG ; Lu YANG ; Nanjia SONG ; Mengna WANG ; Yuanyuan LI ; Xuanjun LIU ; Qiaoyin LI ; Zeen SUN ; Zhenbao LIU ; Gang YIN
International Journal of Biomedical Engineering 2018;41(1):78-84,89
Aptamers are DNA or RNA fragments that can specifically bind to target substances.Because of the excellent properties such as strong binding force,high specificity,small physical size,chemical synthesis and modification,good biocompatibility,and low immunogenicity aptamers show wide application propects in biomedical researches.Aptamers can also bind specifically to receptors on the surface of cell membranes,and mediate the endocytosis of nanoparticles into cells,making them ideal drug targeting ligands.Organic nanomaterials have excellent application value in nanodrug delivery system because of their good biocompatibility and degradability.In this paper,the recent research progress of aptamers and organic nanomaterials drug delivery systems was reviewed.