Medical indexes for student pilots from different areas / 军事医学

Objective To evaluate the medical indexes for student pilots from different areas , to discover the major different indexes between different areas ,and to establish the space distribution model of military pilots .Methods A cross-section survey was conducted among student pilots , and 290 student pilots sampled as respondents were interviewed with questionnaires and subjected to a physical examination , involving distant vision , heart function , and pulmonary function , before a database was established , cleaned and analyzed by EpiData 3.02, SAS 9.13 with double checking .Results There was no difference between the medical indexes of student pilots from 7 areas, but the psychological selection performance record and the entrance examination record were different .Student pilots from area E had the highest psychological selection performance record while those from area D had the highest entrance examination record .Conclusion Student pilots have area difference ,so we should pay close attention to their birth place during recruitment of student pilots .

Inhibition of wound healing of lens epithelial monolayer wounds by an applied electric field / 眼科

Objectives To investigate the effects of electric field on the healing of lens epithelial cell wounds. Design Experimental study. Participants The cultured bovine lens epithelial cells and monolayers. Methods Small circle wounds were made by stabbing the cultured bovine lens epithelial monolayers with a glass needle and exposed to an applied electric field at a physiological strength of 200 mV/mm for 2 hours (n=37), and the wounds with no electric field exposure were used as control (n=29). With an image analyzer (Leica), the wound areas at 0, 1 and 2 hours after wounding were measured. Wounds were stained with F-actin fluorescence antibodies to observe the arrangement of microfilament cytoskeleton. Main Outcome Measures The wound areas and the arrangement of microfilament cytoskeleton of wounds. Results Compared to control wounds, the healing of wounds exposed to electric field was reduced, the mean area of field-exposed wounds at 2 hours after wounding (19106?m2?2167?m2) was significantly more than that of control wounds (8555?m2?1911?m2) (t=2.942, P=0.0045). The arrangement of microfilament cytoskeleton in control wounds was centripetally and a purse string-like arrangement of microfilament cytoskeleton was showed in field-exposed wounds. Conclusion Applied electric field at a physiological strength inhibits the healing of lens epithelial wounds.