Objective To access the effect of intermittent catheterization (IC) on the urinary tract infection in patients with spinal cord injury. Methods Sixty patients of spinal cord injury combined with urinary tract infec-tion were randomly divided into two groups: treatment group (32 patients) treated with sensitive antibiotics and IC;control group (28 patients) treated with sensitive antibiotics only. Both groups were treated for two weeks. Results In the treatment and control group,the cure rate was 56% and 29% ,respectively,the total effective rate was 91% and 64% in the treatment and control group,respectively,the clearance rate of bacteria was 81% and 57% ,respec-tively. All differences were significant (P<0.05). Conclusions IC can improve the effect of antibiotic on urinary tract infection in patients with spinal cord injury, and might be effective on the treatment of urinary tract infection caused by various neurogenic bladders.

Objective To investigate arsenic trioxide (As2O3)-mediated apoptosis of synovlal cells in pa-tients with rheumatoid arthritis (RA) through culturing the synoviocytes in vitro. Methods Primary synovial cells were cultured by means of two-enzymatic digestion and the third cells were adopted in this test. The cultured cells were defined by MTT and flow cytometry (FCM). Results Certain concentration of As2O3 could inhibit the viability of synoviocytes at 48 h by means of MTT, which was dose-dependent. Certain concentration of As2O3 could induce the apoptosis of synoviocytos pro rata at 48h by means of FCM ,which was dose-dependent within range of 10-80 μmol/L concentration. Conclusion Certain concentration of As2O3 following 48 h effect could induce the apoptosis of syno-viocytes of RA,which is dose-dependent.

Objective To evaluate the serum organochlorine pesticides residues levels in breast cancer pa-tients with different estrogen receptor(ER). Methods 93 patients of breast cancer from Fengnan districtand 65 pa-tients from Tanghai county in Tangshan were selected,whose ER were detected by pathology and serum organochlo-fine pesticides (DDTs and HCHs) levels were detected and compared with gas chromatography/electron capture. Results The orders of detection rate of HCH isomer in breast cancer patients in two areas were β-HCH >δ-HCH > α-HCH >γ-HCH. The orders of detection rate of DDT isomer in breast cancer patients in two areas were PP'-DDE > PP'-DDT > OP'-DDT > PP'-DDD. The serum levels of β-HCH, PP'-DDE in breast cancer patients in two are-as were positively correlated with age (r=0.272 ,0.330 , P<0.01) or BMI (r=0.312,0.187, P <0.01, <0.05). There were statistical differences in the serum β-HCH,δ-HCH,PP'-DDE levels between the estrogen receptor posi-tive breast cancer patients and the estrogen receptor negative breast cancer patients in two areas (P<0.05 for each). Conclusion The serum organochlorine pesticides residues levels in breast cancer patients with positive es-trogen receptor are higher than that with negative estrogen receptor, implicating that breast cancer is dependent on es-trogen. The cause of breast cancer is likely due to estrogen-like effect of serum organochlorine pesticides residues.