Aim To explore the antimicrobial activity of a novel R-type phage tail-like bacteriocin(PTLB)secreted by Enterobacter cloacae SHAMU191747 a-gainst methicillin-resistant Staphylococcus aureus(MR-SA).Methods Antagonistic activity of E.cloacae SHAMU191747 against MRS A was detected by LB agar plate antagonistic test and LB broth micro-fermentation test.The crude extract of fermentation supernatant of E.cloacae SHAMU191747 was prepared by ultra-high-speed centrifugation and density gradient centrifuga-tion.The novel R-type PTLB in the crude extract was detected by transmission electron microscopy.The an-timicrobial activity of the crude extract against MRSA was verified by LB agar plate spot-seeding method.The molecular weight of the novel R-type PTLB was detected by SDS-PAGE electrophoresis.Results E.cloacae SHAMU191747 secreted a novel R-type PTLB,and had a strong antagonistic effect on MRSA.The no-vel R-type PTLB had a molecular weight of approxi-mately 35 ku and could efficiently kill MRSA.The physical dimensions of its tail-sheath-uncontracted functional molecules were(142.7±4.3)×(13.8±0.6)nm,and those of the tail-sheath-contracted non-functional molecules were(57.7±1.2)×(20.8±1.5)nm.Conclusions The novel R-type PTLB pro-duced by E.cloacae SHAMU191747 can efficiently kill MRSA,and has the potential to be developed into a novel antimicrobial drug with great prospects for clini-cal application.

Medical magnetic nanoparticles are nano-medical materials with superparamagnetism, which can be collected in the tumor tissue through blood circulation, and magnetic particle imaging technology can be used to visualize the concentration of magnetic nanoparticles in the living body to achieve the purpose of tumor imaging. Based on the nonlinear magnetization characteristics of magnetic particles and the frequency characteristics of their magnetization, a differential detection method for the third harmonic of magnetic particle detection signals is proposed. It was modeled and analyzed, to study the nonlinear magnetization response characteristics of magnetic particles under alternating field, and the spectral characteristics of magnetic particle signals. At the same time, the relationship between each harmonic and the amount of medical magnetic nanoparticle samples was studied. On this basis, a signal detection experimental system was built to analyze the spectral characteristics and power spectral density of the detected signal, and to study the relationship between the signal and the excitation frequency. The signal detection experiment was carried out by the above method. The experimental results showed that under the alternating excitation field, the medical magnetic nanoparticles would generate a spike signal higher than the background sensing signal, and the magnetic particle signal existed in the odd harmonics of the detected signal spectrum. And the spectral energy was concentrated at the third harmonic, that is, the third harmonic magnetic particle signal detection that meets the medical detection requirement could be realized. In addition, the relationship between each harmonic and the particle sample volume had a positive growth relationship, and the detected medical magnetic nanoparticle sample volume could be determined according to the relationship. At the same time, the selection of the excitation frequency was limited by the sensitivity of the system, and the detection peak of the third harmonic of the detection signal was reached at the excitation frequency of 1 kHz. It provides theoretical and technical support for the detection of medical magnetic nanoparticle imaging signals in magnetic particle imaging research.
Magnetics ; Magnetite Nanoparticles

This study aimed to evaluate the therapeutic effect of IR-61, a novel mitochondrial heptamethine cyanine dye with antioxidant effects, on diabetes mellitus-induced erectile dysfunction (DMED). Eight-week-old male Sprague-Dawley rats were intraperitoneally injected with streptozotocin (STZ) to induce type 1 diabetes. Eight weeks after STZ injection, all rats were divided into three groups: the control group, DM group, and DM + IR-61 group. In the DM + IR-61 group, the rats were administered IR-61 (1.6 mg kg

To analyze the academic characteristics and medication rules of traditional Chinese medical master Liu Zu-yi for treating insomnia. Totally 178 cases of insomnia treated by Professor Liu were collected,and the treatment data were input into traditional Chinese medicine inheritance support system( TCMISS) by using data mining methods,such as essential information,frequency statistics of symptoms,syndrome type statistics,extraction of syndrome elements,frequency statistics of drugs; and four properties and five tastes of drugs,distribution of meridians,regularity of prescriptions,new prescription analysis were mined. It was found that the most commonly used drugs( over 100 times) were Albiziae Cortex,Longgu,Polygoni Multiflori Caulis,Ostreae Concha,Ziziphi Spinosae Semen,Crataegi Fructus; the commonly used couplet medicines were Longgu-Ostreae Concha,Ziziphi Spinosae Semen-Polygoni Multiflori Caulis,Ziziphi Spinosae Semen-Albiziae Cortex-Polygoni Multiflori Caulis; and seven new prescriptions in treating insomnia were explored,such as prescriptions containing Hordei Fructus Germinatus,Ziziphi Spinosae Semen,Galli Gigerii Endothelium Corneum,Rehmanniae Radix,Lilii Bulbus. Based on the introduction and discussion of Professor Liu's academic views and characteristics on insomnia treatment and the illustrative evidences added to the typical case list,this paper combines the academic characteristics,data support and typical medical records to verify each other,and objectively summarizes his academic experience for treating insomnia. Treatment shall focus on the primary cause of disease in three aspects; syndrome differentiation shall distinguish between excessive disease and deficient disease; therapy shall reinforce deficiency and reduce diarrhea,regulate the five internal organs,and emphasizes the heart and liver,particularly the liver; medication shall focus on the drugs for calming the mind and protecting the stomach and spleen,which are commonly combined with three types of traditional Chinese medicine with effect in introducing Yangqi( Pinelliae Rhizoma Praeparatum,Prunellae Spica,Polygoni Multiflori Caulis) and restraining Yangqi( Longgu,Ostreae Concha,Ziziphi Spinosae Semen); nursing care focuses on preserving the body and tranquilizing the mind by means of three methods for tranquilizing the mind and three methods for preserving the body.
Data Mining ; Drugs, Chinese Herbal ; therapeutic use ; Humans ; Medicine, Chinese Traditional ; standards ; Meridians ; Sleep Initiation and Maintenance Disorders ; drug therapy

Objective To evaluate the clinical efficacy and safety of endoscopic full-thickness resection assisted by dental floss traction in treatment of gastric submucosal tumors. Methods Those patients with gastric submucosal tumors from January 2016 to September 2016 were enrolled in the study. All patients were treated with endoscopic full-thickness resection assisted by dental floss traction. The en bloc resection rate, procedure time were analyzed. Complications such as bleeding and perforation were observed in the procedures. All patients were followed up 3-6 months for evaluation of efficacy and safety. Results 96 patients were recruited into the study. The average surgery time of 26.7 min (20 ~ 55 min), the success rate and the en bloc resection rate was 100.0%. The average tumors sizes was 1.2 cm (0.8 ~ 2.5 cm). The intraoperative bleeding occurred in 1 patient, the incidence rate of bleeding was 1.0% (1/96). The tumors were located cardia in 13 patients (13.5%), gastric fundus in 46 patients (47.9%), in gastric body in 33 patients (34.3%), in antrum in 2 patients (2.1%), in gastric angle in 2 patients (2.1%). Pathological results of interstitial tumor in 62 patients (64.6%), leiomyoma in 31 patients (32.3%), calcifying fibroma in 1 patients (1.0%), ectopic pancreas in 2 patients (2.1%). The median hospital stay was 4 days (3 ~ 7 d). No complications such as fever, abdominal pain were found during during the follow-up of 3 ~ 6 months. Conclusion Endoscopic full-thickness resection assisted by dental floss traction in treatment gastric submucosal tumors is effective and safe.

Drug-loading micro-particles are a targeted, positioned and controlled-release drug delivery carrier with a wide application prospect. Various micro-carrier drug delivery systems have their own advantages in promoting absorption, improving stability, targeting and controlled release. Accordingly, it is of far-reaching significance for the studies on micro carrier drug delivery systems to build oral traditional Chinese medicine (TCM) compound micro-carrier drug delivery systems with effective TCM components and effective fractions. This article introduces several features and advantages of oral micro-carrier drug delivery systems, and summarizes their application in the field of TCMs.
Administration, Oral ; Animals ; Drug Carriers ; chemistry ; Drug Delivery Systems ; methods ; Drugs, Chinese Herbal ; administration & dosage ; chemistry ; Humans

BACKGROUNDCKLF-like MARVEL transmembrane domain-containing 7 (CMTM7) located at 3p22.3, is a frequent deletion site and a tumor suppressor gene (TSG) locus in many cancer, which suggests CMTM7 may be a potential TSG. The aim of this study was to investigate the correlations of CMTM7 expression and survival rate in patients with non-smallcell lung cancer (NSCLC).

METHODSSurgical specimens of 180 cases with pathologically confirmed NSCLC were grouped into 18 tissue microarray slides. CMTM7 expression in these specimens were detected by immunohistochemistry staining and representative cases were confirmed by Western blotting. Univariate and multivariate analyses were performed to identify the association of CMTM7 expression with pathological features and survival of patients with NSCLC.

RESULTSA total of 78.9% of the 180 patients had variations of CMTM7 protein expression, either up-regulated or down-regulated. Univariate analysis showed that the patients' survival rate after surgery was highly correlated with CMTM7 expression (P = 0.0091). In addition, prognostic factors were examined by multivariate Cox regression analysis, and results suggested that CMTM7 expression was a unique prognostic factor in NSCLC survival.

CONCLUSIONSThe CMTM7 expression may be related to survival of patients with NSCLC and a unique prognostic factor. CMTM7 may play an important role in NSCLC development.

Adult ; Aged ; Aged, 80 and over ; Carcinoma, Non-Small-Cell Lung ; chemistry ; mortality ; pathology ; Chemokines ; analysis ; genetics ; physiology ; Female ; Humans ; Lung Neoplasms ; chemistry ; mortality ; pathology ; MARVEL Domain-Containing Proteins ; analysis ; genetics ; physiology ; Male ; Middle Aged ; Prognosis ; Proportional Hazards Models ; Tissue Array Analysis ; Tumor Suppressor Proteins ; analysis ; genetics ; physiology

OBJECTIVETo analyze the etiological and epidemiological characteristics of hand-foot-and-mouth disease (HFMD) seen in Jiangsu province from 2008 to 2010, and provide evidence for its prevention and control.

METHODSBased on the requirement of supervision program of HFMD, surveillance and report were done according to National Disease Supervision Information Management System. Descriptive epidemiological method, performed between 2008 and 2010, was used to analyze the time, region and population distribution and results of etiologic analysis of HFMD. Nucleic acid of enterovirus (EV) genome was detected by real-time RT-PCR.

RESULTSThe average incidence rate of HFMD was 86.70 per million between 2008 and 2010, the peak incidence occurred in April to July. There were significant differences among the incidence in different districts (P<0.05), and the highest incidence was seen in the densely inhabited southern areas of Jiangsu province. Most of the cases were infants and children aged less than 5 years. The number of male cases (2008: 17,008, 2009: 48 768, 2010: 50,231) was much larger than that of the female cases 2008: 9662, 2009: 29 151, 2010: 30,655. The HFMD cases with mild symptoms were caused mainly by enterovirus 71 (EV71) and coxsackievirus A16 (Cox A16) and there was difference among different years. The severe HFMD cases and deaths were mainly caused by EV71 infection.

CONCLUSIONSThe epidemiologic characteristics of HFMD in Jiangsu province from 2008 to 2010 had close relationship with season, population and region. The mild cases of HFMD were mainly infected with EV71 and Cox A16. However, EV71 illness seemed to be more severe and had significantly greater frequency of serious complications and fatality than the illness caused by Cox A16.

Child, Preschool ; China ; epidemiology ; Disease Outbreaks ; Enterovirus A, Human ; pathogenicity ; Female ; Hand, Foot and Mouth Disease ; epidemiology ; virology ; Humans ; Infant ; Male

Solid organ transplant recipients are at increased risk for Aspergillus infections. However, the cases of Aspergillus spondylodiscitis are rare and mostly resulted from the hematogenous spread of invasive pulmonary Aspergillosis. Here, we report a case of primary spondylodiscitis in a liver transplant recipient. Six months after transplantation, a chronic and progressive lumbar back pain was presented. The patient had no fever and the white blood cell count was normal. High plasma (1→3)-beta-d-glucan (BDG) level was detected at the time of back pain. The pathogen was Aspergillus flavus. Clinical and radiological healing was achieved through posterior only debridement and voriconazole therapy.
Adult ; Aspergillosis ; blood ; diagnosis ; etiology ; Discitis ; blood ; diagnosis ; etiology ; Humans ; Liver Transplantation ; adverse effects ; Male

OBJECTIVETo evaluate the risk factors of postoperative renal failure (RF) in the patients with type A dissection of aorta operated on with cerebral perfusion and deep hypothermia circulatory arrest (DHCA).

METHODSFrom January 2004 to October 2007, 157 patients with type A dissection of aorta underwent surgical procedures with cerebral perfusion and DHCA. There were 115 male patients and 42 female patients with the age from 17 to 76 years old. Antegrade selective cerebral perfusion through axillary artery was performed for 129 patients and retrograde cerebral perfusion from superior cava vein was performed for 28 patients. All the factors underwent univariate and multivariate analysis.

RESULTSMean cardiopulmonary bypass duration was (188.0 +/- 10.8) min and mean cerebral perfusion time was (36.0 +/- 3.1) min. Fifteen patients died in hospital and the hospital mortality was 9.6%. Permanent neurological dysfunction (PND) occurred in 8 patients (5.1%). Postoperative RF was observed in 20 patients (12.8%). Multivariate analysis showed the preoperative renal dysfunction (P = 0.042, OR = 4.41) and over seventy-year-old patients (P = 0.049, OR = 4.94) were found to be the risk factors of postoperative RF. There was a higher incidence of death (45%, P = 0.001) and PND (25%, P = 0.009) in the patients of postoperative RF when compared with the other patients.

CONCLUSIONThe preoperative renal dysfunction and elderly patients were found to be the risk factors of postoperative RF after type A dissection of aorta surgery.

Adolescent ; Adult ; Aged ; Aneurysm, Dissecting ; surgery ; Aortic Aneurysm, Thoracic ; surgery ; Female ; Heart Arrest, Induced ; Humans ; Hypothermia, Induced ; Male ; Middle Aged ; Perfusion ; Postoperative Complications ; etiology ; Renal Insufficiency ; etiology ; Risk Factors