In this paper, polymorphonticlear leukocyte chemotaxis filter assay and its affected factors have been studied in accordance with the practical conditions.The results indicated that leukocyte chemotaxis may be detected by using Boycen chemotaxischamber prepared in our laboratory and filters made of mixed esters of cellulose athome.The appropriate experimental conditions are as follows:Single filter methodselected the filter of 3?m pore size.The cells were suspended in Eagle medium at aconcentration of 1?1.5/ml.The chamber was incubated at 37℃ in humidified airfor 120 min.Optimal concentration of bacterial culture filtration,zamsan activatedserum and lymphocyte derived chemotactic factor had eqeal cytotactic potency. Leukocyte chemotaxis is quantitated by counting the number of migrating cells atvarious depths within the filter.The mean number of migrating cells toward chemo-tactic factor is usually about twice as many as that of medium of control.Themodified method which may be acted as an index for investigating leukocyte functionin the experimental immunology and clinical research.

Objective To study effect of high ilioinguinal approach in treatment of acetabular fractures involving quadrilateral plate. Methods 28 cases of acetabular fractures were randomly divided into two groups according to admission time. 16 patients in the observation group were given high ilioinguinal approach operation. 12 patients in the control group were treated with traditional ilioinguinal approach op-eration. Operation condition, fracture reduction, the hip function recovery and postoperative complications of the two groups were compared. Results The amount of bleeding, the length of incision, operation time and operation conditions of the two groups had no significant differ-ence (P>0. 05). The satisfactory fracture reduction rate of observation group was higher than the control group (P<0. 05). Hip function score of observation group was significantly higher than that of the control group (P<0. 05). In observation group, the excellent rate of hip joint function was better than that of the control group (P<0. 05). The incidence rate of complications in the observation group and the con-trol group were 12. 50% and 16. 67% respectively, and there was no significant difference between the two groups (P>0. 05). Conclusion High ilioinguinal approach can improve the fracture reduction effect, effectively improve the hip joint function in patients, and it has higher security which is a kind of ideal treatment approach for acetabular fractures involving quadrilateral plate.

Diabetic retinopathy(DR)is a common complication of diabetes.Sodium-glucose cotransporter 2(SGLT-2)inhibitors are widely used in diabetic patients as hypoglycemic drugs and also play a role in the prevention and treatment of DR.At present,there has been no systematic study on the clinical treatment of DR by SGLT-2 inhibitors.This paper re-views the research progress of SGLT-2 inhibitors in the treatment of DR,in order to provide more ideas for the clinical treatment of DR.