OBJECTIVE To investigate the resistance rates of Gram negative bacilli and the distribution of ?-lactamases in hospital infections(HI) or community acquired infections(CAI) in Tongling.METHODS Antimicrobial(susceptibility)(test) was done on 356 strains of Gram negative bacilli isolated in Tongling from Oct 2003 to Sep 2004 by Kirby-Bauer method.The detection of ESBLs and AmpC ?-lactamases was performed by three-dimensional test,MBL by the double-disk synergy test.RESULTS Among total 356 strains of Gram negative bacilli,267 were with HI(53.9%) isolated from sputum of patients,89(34.8%) were(isolated) from CAI patients and urine.The antimicrobial susceptibility rates of Gram negative bacilli from CAI patients was significantly higher than that from HI patients,for Acinetobacter baumannii they were 1.5 to 3.0,for(Pseudomonas aeruginosa) were 1.2 to 1.6.No strains of Escherichia coli and Klebsiella pneumoniae were found resistant to imipenem.Among 356 Gram negative bacilli,77 strains hyperproducing ESBLs and AmpC ?-lactamases,the detection rate was 21.6%, 69 strains were isolated from HI patients,and 8 strains were from CAI patients.From strains resistant to imipenem had 13 strains detected MBL,the detection rate was 52.0%.All of them were isolated from HI patients.CONCLUSIONS The resistance of Gram negative(bacilli) is a serious problem in Tongling.The antimicrobial(susceptibility) rates of Gram negative bacilli from CAI patients are significantly higher than those from HI patients.Gram negative bacilli produce all kinds of(?-lactamases,) such as ESBLs,AmpC(?-lactamases) and MBL.

OBJECTIVE:To provide for rational use of Tripterygium glycosides tablet clinically. METHODS:The utilization of Tripterygium glycosides tablet were collected from hospital information system(HIS)in our hospital during Jun. 2012-Jun. 2014. Then the data about the basic information,patients’age,departments and diagnosis,were analyzed by the Excel. RESULTS:The application of Tripterygium glycosides tablet remained stable since Jun. 2012. There were 4 600 prescriptions in average every year, and the age of patients was distributed from 11 to 90. Tripterygium glycosides tablet was mainly used in rheumatology department (52.11%),followed by TCM rheumatology department(20.62%),skin disease and venereal disease department(18.15%),ne-phrology department(3.52%)and integrated traditional and western medicine cardiology department(1.77%). It was mainly used to treat rheumatoid arthritis,Sjogren's syndrome,polymyalgia rheumatica,osteoporosis and nephrotic syndrome. CONCLUSIONS:The application of Tripterygium glycosides tablet as immunosuppressant is widely used,but the age of patient is with wide distribu-tion;the narrow gap exists between minimum effective dose and minimum lethal dose;so ADR should be concerned closely.

Objective To observe the influence of XueShuanXinMaiNing(XSXMN)in the behavior and structures of cerebral cortex and hippocampus of the rats withβamyloid protein(Aβ)-induced Alzheimer’s disease(AD),and to explore its therapeutic effects on the rat AD.Methods 100 male Wistar rats were selected.According to weight, the rats were randomly divided into sham operation group, model group, positive drug group (donepezil hydrochloride,1.75 mg· kg-1 ),XSXMN 1.1 g· kg-1 group and XSXMN 2.2 g· kg-1 group. The rat AD models were made by injecting Aβinto hippocampus.After oral administration for 15 d,Morris water maze test, dark avoidance task and pathology test were performed.Results In Morris water maze test,compared with model group,the latency and swimming distance to platform of the rats in XSXMN 1.1 g·kg-1 group were decreased on the 2nd,4th and 5th day(P<0.05 or P<0.01);in XSXMN 2.2 g·kg-1 group,the latency to platform of the rats were decreased from the 3nd to 6th day(P<0.05 or P<0.01),the swimming distances to platform of the rats were decreased from the 3rd to 5th day(P<0.05 or P<0.01).On the 7th day,in XSXMN groups,the times of passing platform,time of staying on platform,distance of staying on platform,time of staying in effective area, distance of staying in effective area, time of staying on platform/total time, distance of staying on platform/total distance,time of staying on platform/total time were all increased significantly(P<0.05 or P<0.01)within 90 s. In dark avoidance task,compared with model group,the error latency and the error times of the rats in XSXMN groups had no obvious change on the 2nd day.The pathological results showed that there were degeneration nerve cells and necrosis nerve cells in the rat cerebral cortex in XSXMN groups,while in the rat hippocampus there were less number of nerve cells with obscure cell layer and many degeneration and necrosis cells were found;compared with model group,there was no obvious improvement.Conclusion XSXMN can improve the learning and memory function of the AD rats.

To explore a new method for analyzing biological molecules that have already been sequenced, an experimental study on an auditory method was carried out. The auditory method for analyzing biological molecules includes audible representation of sequence data. Audible representation of sequence data was implemented by using a multimedia computer. Each mononucleotide in a DNA sequence was matched with a corresponding sound, i.e., a DNA sequence was "dubbed" in a sound sequence. When the sound sequence is played, a special cadence can be heard. In the audible representation experiment, special cadences of different exons can be clearly heard. The results show that audible representation of DNA sequence data can be implemented by using a multimedia technique. After a 5-time auditory training, subjects both in internal testing and external testing can obtain 93%-100% of judgment accuracy rate for the difference between two sound sequences of two different exons, thus providing an experimental basis for the practicability of this method. Auditory method for analyzing DNA segments might be beneficial for the research in comparative genomics and functional genomics. This new technology must be robust and be carefully evaluated and improved in a high-throughput environment before its implementation in an application setting.
Computational Biology ; methods ; Decision Making, Computer-Assisted ; Genome ; Humans ; Multimedia ; Sequence Analysis, DNA ; methods ; Sound

Objective To explore antiviral efficacy, safety and blocking of mother-to-infant transmission by administrating telbivudine in pregnant patients with chronic hepatitis B (CHB) throughout pregnancy. Methods Sixty-four cases of female patients were enrolled. The study participants were divided into the telbivudine treatment group (n = 31) and the control group (n = 33). Data were recorded from beginning of administration to ending pregnancy, as well as notation of any adverse reactions. The neonates and infants were evaluated in HBV infection, parameters of growth and development. Results The recovery rates of ALT, respectively, were 90.32% vs. 57.58% (P = 0.003), 93.55% vs. 62.50% (P = 0.003) at 24 weeks and ante partum and the HBVDNA-negative conversion rates, respectively, were 48.39% vs. 3.03% (P = 0.000), 83.87%vs. 6.06% (P = 0.000), 90.32% vs. 6.25% (P = 0.000) respectively, at 12, 24 weeks of pregnancy and at ante partum between the treatment and control groups. The HBsAg-positive and HBVDNA-positive rates of the infants, respectively, were 12.90% vs. 37.50% (P = 0.025) and 0 vs. 21.88% (P = 0.018) at birth, and respectively, were all 0 vs. 18.75% (P = 0.035) and 0 vs. 18.75% (P = 0.035) at 1, 6, 12 months old between the treatment and control groups. The treatment group showed lower incidence of intrauterine HBV infection (0 vs. 18.75%, P = 0.035). The gestational ages, fetal weights and Apgar scores were not significant different in the children born in the mothers from the two groups. Conclusions Telbivudine administration showed a good antiviral curative effect and effectively blocked mother-to-infant transmission in women with CHB. The treatment was safe and caused no obvious adverse reaction.

Objective　To investigate genes involved in cancer metastasis, mRNA differential display was used to compare the levels of gene expression in two cell sublines derived from human giant cell carcinoma of lung (PG) which had different metastatic potentials. Methods　Using in vivo tumorigenicity and a spontaneous metastasis assay in nude mice, two sublines (BE1, LH7) from human giant cell carcinoma of lung (PG) with different metastatic potentials were isolated and characterized. mRNA differential display was used to compare the levels of gene expression between them and the obtained results were confirmed by Northern hybridization. Results　One differentially expressed band was nearly identical (99% homology) to Ras-GTPase-Activating protein SH3 domain binding protein (G3BP). G3BP displayed a strong expression in LH7 (non-metastatic in recipient nude mice) and a very weak expression in BE1 (100% metastatic frequency). The same different expression level of G3BP was detected in Northern hybridization with another panel of cell sublines with different metastatic potentials (established in our lab) derived from human prostate carcinoma cell line PC-3M. Conclusion　Our results indicate that G3BP was implicated in cancer metastasis because of its differential expressions in the two panels of cell sublines with different metastatic potentials.

OBJECTIVETo explore the antiviral efficacy, safety and protective ability against mother-to-infant transmission of telbivudine in pregnant patients with chronic hepatitis B (CHB) during the first trimester.

METHODSEighty four gravid women who were diagnosed with CHB, in their first trimester of pregnancy, and had refused to terminate their pregnancies were enrolled; all study participants were clinically classified as active hepatitis cases with positivity for both hepatitis B surface antigen (HBsAg) and hepatitis B e antigen (HBeAg), HBV DNA more than or equal to 107 copies/mL and serum level of alanine aminotarnsferase (ALT) of more than or equal to 4 ULN.Patients with YMDD mutations were excluded from the study. The study participants were divided into a telbivudine treatment group (n=43; administered in the first trimester of pregnancy) and a control group (n=41, consisting of patients who refused to take antivirals). All babies bom to the women in both groups of the study received standard immune prevention (anti-hepatitis B immunoglobulin plus hepatitis B vaccine) and artificial feeding.Data recorded for the women during pregnancy included clinical findings for tests of hepatic and renal function, myocardial enzymes, blood and urine clinical parameters, hepatitis B virus makers and HBV DNA, as well as notation of any adverse reactions. The neonates were evaluated for presence of HBV infection, parameters of growth and development, presence of complications, and Apgar score. At 6 and 12 months old, all infants were evaluated for HBV DNA level and HBsAg presence.

RESULTSThe genetic variant rtM204I was detected in one of the women in the treatment group at 36 weeks of pregnancy. One woman in the control group developed severe hepatitis at 28 weeks of pregnancy and was put on the telbivudine treatment The treatment group showed greater recovery rates of ALT than the control group at 12 weeks of pregnancy (62.8% vs.29.3%, P=0.002), 24 weeks of pregnancy (76.7% vs.46.3%, P=0.000), and at ante partum (88.1% vs.60.0%, P=0.004). The treatment group also showed greater HBV DNA-negative conversion rates at 12 weeks of pregnancy (20.9% vs.0, P=0.006), at 24 weeks of pregnancy (37.2% vs.0, P=0.001) and at ante partum (78.6% vs.0, P=0.000), and greater HBeAg seroconversion rates at 12 weeks of pregnancy (2.3% vs.0, P=1.000), at 24 weeks of pregnancy (9.3% vs.0, P=0.116) and at ante partum (2 1.4% vs.0, P=0.002). The HBsAg-positive rates and HBV DNA-positive rates among the infants born to the mothers in the treatment and control groups, respectively, were 2.4% vs.17.5% (P=0.027) at birth, 0 vs.17.5% (P=0.005)at 6 months old and 0 vs.17.5% (P=0.005) at 12 months old. The Apgar scores were not significantly different for the children born to the mothers from the two groups, and all the children showed parameters of growth development within normal limits.

CONCLUSIONTelbivudine administration in the first trimester had a good antiviral curative effect and effectively blocked mother-to-infant transmission in women with CHB. The treatment was safe, causing no obvious adverse reaction in the gravid women or developmental effects on the infants.

Antiviral Agents ; DNA, Viral ; Female ; Hepatitis A Vaccines ; Hepatitis B Vaccines ; Hepatitis B e Antigens ; Hepatitis B virus ; Hepatitis B, Chronic ; Humans ; Infant ; Infant, Newborn ; Infectious Disease Transmission, Vertical ; Mother-Child Relations ; Mutation ; Pregnancy ; Pregnancy Complications, Infectious ; Pregnancy Trimester, First ; Thymidine ; analogs & derivatives ; Vaccines, Combined

Objective:To evaluate the efficacy and safety of a China-made disposable peroral cholangioscope in animal cholangioscopy.Methods:Six healthy Bama minipigs underwent the domestic disposable peroral cholangioscopy after anesthesia. The operation performance and image quality of the products were evaluated, and intraoperative and postoperative complications were recorded.Results:All 6 animals received the domestic disposable peroral cholangioscopy. The cholangioscope showed good operating performance and could smoothly enter the biliary tract through the duodenoscope. The water injection, suction and instrument channels were unobstructed. The cholangioscopic image was clear, the color resolution was good, and there was no image distortion. The lumen and the mucosal surface could be accurately assessed. During the examination, there was no operative injuries such as bleeding, perforation, or adverse events such as respiratory depression or cardiac arrest. All pigs survived the operation with no adverse reaction.Conclusion:The China-made disposable peroral cholangioscope is safe, with good operability and high-quality image.

Objective:To investigate the relationship between double mutations of myosin heavy chain gene (MYH6) p.Gly743Arg and p.Glu1389Lys and the cardiac phenotype.Methods:Patients carrying double mutations in the MYH6 gene p.Gly743Arg and p.Glu1389Lys were screened from 52 unrelated left ventricular hypertrophy (LVH) who were admitted to the Second Hospital of Chongqing Medical University from 2015 to 2020, and the genetic testing of peripheral blood of patients by second-generation whole-exome sequencing assay technology and genomic DNA of their family members Sanger sequencing was performed to validate the genomic DNA of the family members. The cardiac phenotype was evaluated by electrocardiogram, coronary computed tomography angiography (CTA), echocardiography, and cardiac magnetic resonance imaging (MRI) as adjuncts.Results:All whole-exome gene were detected in 52 unrelated patients with LVH, of which 1 patient (1.9%) had double mutations in MYH6 gene p.Gly743Arg and p.Glu1389Lys (proband). Two members of the maternal line of this patient carried p.Glu1389Lys mutation, but there was no obvious clinical phenotype. Two members of the paternal line carried p.Gly743Arg mutation and had obvious clinical phenotype of bradycardia, but there was no LVH. The male proband, aged 21 years old, presented with LVH and sinus bradycardia but no coronary artery stenosis on CTA before treatment, MRI showed that the left ventricular end diastolic diameter was 58 mm. After treatment with angiotensin receptor-enkephalinase inhibitor (ARNI), electrocardiogram showed that the heart rate increased significantly (from 43 bpm to 72 bpm). Echocardiography showed that the left ventricular end diastolic diameter decreased significantly (from 60 mm to 49 mm).Conclusions:The p.Glu1389Lys mutation of the MYH6 gene may not manifest the phenotype of heart disease. MYH6 gene p.Gly743Arg mutation may be manifested asymptomatic sinus bradycardia, but there is no LVH phenotype. The cardiac disease phenotype caused by the double mutations of p.Gly743Arg and p.Glu1389Lys in the MYH6 gene is more obvious. Asymptomatic LVH and sinus bradycardia can appear in adolescence, but the LVH phenotype can be reversed in a short period of time after ARNI treatment.

Objective:To learn about the epidemiological characteristics and trends of brucellosis in Ningxia Hui Autonomous Region (Ningxia), and to provide reference for formulation of brucellosis prevention strategies and identification of key areas.Methods:The case data from 2004 to 2019 were collected from the "China Disease Prevention and Control Information System Infectious Disease Monitoring and Reporting System", and descriptive epidemiological methods were used to analyze the distribution of cases (time, population, and regional distribution).Results:From 2004 to 2019, a total of 15 337 human brucellosis cases and 1 death case were reported in Ningxia. The average annual incidence rate was 15.21/100 000, ranging from 0.02/100 000 to 44.83/100 000. The difference in incidence rate in different years was statistically significant (χ 2 = 14 731.60, P < 0.001). Among them, from 2004 to 2010, the incidence rate was low, with an average annual incidence rate of 1.32/100 000; from 2011 to 2019, it entered a high incidence stage, with an average annual incidence rate of 24.83/100 000. Brucellosis occured in every month of the year, and the onset time was mainly in March to September, accounting for 71.60% (10 981/15 337); seasonal indexes from April to August was all > 100%, with obvious seasonality. The age of onset mainly concentrated in 20 - < 70 years old, accounting for 89.60% (13 742/15 337); males were significantly more than females, with a sex ratio of 2.66 ∶ 1.00 (11 141/4 196); the occupations were mainly farmers and herdsmen, accounting for 86.03% (13 194/15 337). Since 2014, cases had been reported in 22 counties (districts, cities) in the region, all of which were all severely endemic areas; the top three counties (districts) with incidence rate were Yanchi County (103.73/100 000), Hongsibao District (56.01/100 000) and Tongxin County (29.18/ 100 000), respectively, the difference between different regions was statistically significant (χ 2 = 3.80, P < 0.001). Conclusions:The incidence rate of brucellosis in Ningxia is on the rise, and the epidemic situation is severe. It is recommended to carry out active and effective intervention measures in areas with high incidence of brucellosis to curb the further spread of brucellosis.