BACKGROUND: Long-acting antimicrobial material Is a new polymer activator of organoslllcon quaternary ammonium salt and has obvious advantages In anti-Infection. OBJECTIVE: To investigate the effects of Jieyoushen, a long-acting antimicrobial material, on pathogenic distribution and serum inflammatory factors in patients with indwelling catheters. METHODS: A total of 200 male patients with indwelling catheter who received treatment during January 2014 to January 2018 in Hainan West Central Hospital, China were Included In this study. These patients were aged 35-55 years and were randomly divided Into two groups: A control group (n=100) and an observation group (n=100). Patients In the control group were given routine urethral orifice nursing. Patients in the observation group were sprayed with long-acting antimicrobial material “Jieyoushen” on the urethral orifice, catheter and catheter bag interface. Infection was detected at 1, 3, 5 and 7 days after catheterization. The changes of pathogenic bacteria and serum inflammatory factors in two groups were analyzed at 7 days after catheterization. This study was approved by the Medical Ethics Committee, Hainan West Central Hospital, China (approval No. 2013120602). RESULTS AND CONCLUSION: Compared with the control group, the Infection rates of the patients In the observation group decreased significantly at 1, 3, 5 and 7 days after catheterization (P < 0.05). Twenty pathogenic bacteria were Isolated In patients of the control group, Including 13 Gram-positive bacteria (65.0%) and 7 Gram-negative bacteria (35.0%). Seven pathogenic bacteria were Isolated In patients of the observation group, including 5 Gram-positive bacteria (71.4%) and 2 Gram-negative bacteria (28.6%). Compared with before indwelling catheter, serum levels of interleukin-1ß, interleukln-2, homocysteine, and procalcltonin Increased significantly in each group after catheterization (P < 0.05). After catheterization, serum levels of above-mentioned factors in the control group were significantly higher than those In the observation group (P < 0.05). These results suggest that long-acting antimicrobial material “Jieyoushen” can effectively reduce the Infection rate of pathogenic bacteria and lower serum levels of Inflammatory factors In patients with Indwelling catheter.

To understand the sero-epidemiological features of rickettesiosis of humans and domestic animals in Yunnan province, blood samples from 237 adults in different geographic area, including Xundian country,Yulong country and Simao country and 81 children aged from 4 to 6 years old were collected for serological testing. In addition, 90 blood samples from dogs, goats and ox in each investigated area were also collected. Antibodies against 8 rickettsiae, including R.typhi, R.heilongjiangii or R.sibirica, Orientia tsutsugamushi Karp or Kato, Ehrlichia chaffeensis, Anaplasma phagocytosis, Bartonella henselae, Coxiella burnetii and Hainan spotted fever group of rickettsia were examined by using immunofluorescence assays(IFA).It was found that the sero-epidemiologic rates of R.typhi, B.henselae and C.burnetii (16.46%、6.33% and 9.28%) of adults were higher than those of other rickerrsiae investigated. The positive rates of IgG antibody against R.typhi for children also shared the higher rate (12.35%). Similar sero-epidemiologic features were found for domestic animals. Among the 8 rickettsia tested in this study, the positive rate of IgG antibody against R.typhi appeared to be the highest(61.48%) without significant difference among these investigated sites. From this investigation, it is evident that the rickettsial infection of farm population and domestic animals are common in Yunnan province, and the active surveillance of rickettsiosis and differential diagnosis of unknown febrile patients in clinical practice should be enforced.