Objective To observe air disinfection efficacy of ultraviolet ray,ozone disinfector,and circulating air disinfector in outpatient blood collection room.Methods Air in outpatient blood collection room was disinfected by ultraviolet ray,ozone disinfector,and circulating air disinfector,air specimen was taken before and after air disinfection,as well as after 1,2,3,and 4 hour working condition of staff,efficacy of 3 disinfection methods were compared.Results Under static condition,there was no significant difference in average colony forming unit(CFU) among 3 disinfection methods(P =0.317),the average CFU in air which disinfected by ultraviolet ray and ozone disinfector increased rapidly after the entry of personnel,the number of air colony did not meet the requirements of category Ⅲ environmental sanitation standard after staff worked for 2 hours;circulating air disinfector could continuously disinfect after the entry of personnel,the average CFU met the requirement of category Ⅲ environmental sanitation standard after staff worked for 1,2,3,and 4 hours;there were significant difference in the CFU among different disinfection methods(F =211.00,P＜0.001),there were significant difference in CFU at different sampling time(F =272.95,P＜ 0.001).Conclusion Circulating air disinfector can meet the requirements of category Ⅲ environmental sanitation standard during the working condition of staff,and is suitable for air disinfection in outpatient blood collection room.

Objective To observe the effect of CD44 antibody on the hyaluronic acid (HA)generation) were cultured in three different medium: without HA (group 1),0. 01 mg/ml HA (group 2),10 μg/ml HA and CD44 antibody (group 3). The cells in the group 2 and 3 were pre-cultured with HA and CD44 antibody, and the supernatant was collected. HA-substrate gel electrophoresis was performed for HA degradation, while ELISA-like method was performed for HA-binding protein. Results HA-substrate gel electrophoresis showed white light double-band on blue background in groups 1 and 3, thicker double-band or bright de-colored blocks in group 2. ELISA-like method showed that the absorbance (A) value of groups 1,2 and 3 were 0.310 ± 0.025, 0.093 ± 0.051, 0.025 ± 0.069 respectively. The A value of group 2 was obviously lower than that of group 1 (t=28.1, P＜0.01); the A value of group 3 was significantly higher than that of group 2 (t=26.9, P＜0.01), but was the same as group 1 (t=4.92, P＞0.05). Conclusion CD44 antibody can inhibit the interaction between Miller cells and HA, and thus reduce the HA degradation.

Klebsiella pneumoniae is well known as a causative agent of both community and nosocomial infections and is generally believed to be the cause of 10% of the nosocomial infection. Recently, with the widespread using of carbapenem, the isolation of carbapenem-resistant strains has been greatly increased, which bring great dififculties and challenges in clinical treat-ment. In this article, the progresses in the mechanisms of carbapenem, resistance inKlebsiella pneumoniae such as the acquisition of carbapenemases, hyperproduction of AmpC cephalosporinases or extended spectrum beta-lactamases (ESBLs) in combination with loss of the outer membrane protein, eflfux pump system, and bioiflm were reviewed.

Objective To investigate the influence and safety of ultrasound-guided transverses abdominis plane block on general analgesia in patients undergoing lower abdominal operation. Methods Three hundred patients scheduled for lower abdominal operation under general anesthesia were randomly divided into 2 groups:ropivacaine group (group A,n = 151) and normal saline group (group B,n = 149). After the operation ultrasound-guided TAP was performed and 0.375% ropivacaine 20 mL was injected in group A while the equal volume of normal saline was used instead in group B. VAS score, Ramsay sedation score, and Bruggrmann comfort scale (BCS) score were recorded at the time points of 2, 4, 6, 8, 12, 24 hours postoperatively. The adverse reactions such as nausea, vomiting, urinary retention, motor and sensory disorders were also recorded. Results No significant difference in the demographic characteristics such as sex , age , height and weight , was observed between the two groups (P > 0.05). VAS score and BCS score were significantly different (P < 0.05) in group A compared with group B. There were no significant differences (P > 0.05) between the two groups in Ramsay score and adverse reactions. Conclusion Ultrasound-guided TAP block can effectively meet the needs of patients with postoperative analgesia and enhance the comfort after the lower abdominal operation.

Acupuncture Therapy ; Drugs, Chinese Herbal ; pharmacology ; Female ; Humans ; Ovulation ; drug effects ; Ovulation Induction

ObjectiveTo investigate the clinical features of cardiac involvement in polymyositis or dermatomyositis(PM/DM).MethodsAll articles published in Chinese and English were retrieved by searching the electronic resource databases.Theeligible articles that metthe predefined inclusion and exclusion criteria were included and then a systemic review was performed.ResultsTotally 23 articles were enrolled in this study,including 1452 patients.The incidence of cardiac involvement was 27.1％-85％.Heart failure was the most frequent (43.8％-76.9％) symptom.Among the abnormal ECG and UCG,the incidence of conduction abnormalities,left ventricular diastolic dysfunction andhyperkinetic left ventricular contraction 25％-38.5％,27.3％-51.5％ and 11.5％-42.3％ respectively.The pathological findings revealed myocardial inflamma-tion,degenerative changes and necrosis similar to those findings in skeletal muscles.Some patients'condition were improved aftergluco-corticoid stero and immunosuppressant treatment.Thirtypatients (30.9％) died as a direct result of heart disease.ConclusionHeart abnormalities are common in patients with PM/DM,most of them are subclinical,however.The efficacy of gluco corticoid steroid and immunosup-pressant treatment are uncertain.Cardiac involvement is a common cause of death.

Objective To investigate the clinical and immunohistochemical features,diagnosis and treatment of gastrointestinal stromal tumor(GIST). Methods Clinic and pathological datas of 38 cases with GIST were retrospectively analyzed. Results The most common clinal maifestions were abdominal pain,distention or discomfort in 24 cases(50%), abdominal mass in 10,melena and liematemesis in 8 cases. The tumor was located in the stomach in 20 cases, the small infestine in 14,the colorectum in 4.All the cases underwent operation. Conclusion Endoscopy and imaging examination are main methods to detect GIST. Surgical resection is the main mothod of pathologic diagnosis and treatment.

Notch signaling pathway is a highly conserved signaling pathway ,and plays an important role in the individual growth and development process in the vertebrate .Many studies have demonstrated Notch 3 re-ceptor expression is aberrant in a variety of tumors .Recent studies show that aberrant Notch 3 mediated signaling pathway is closely related with the progression of diverse types of tumors .Notch3 plays a vital role in apoptosis , proliferation and differentiation of tumor cells .To promote the studies of Notch 3 as a drug development targets ,the molecular mechanisms of abnormal Notch 3 expression and its role on tumorgenesis ,progression and treatment re-sistance are reviewed in this paper .