Objective To investigate the action of integron-mediated multidrug resistance in clinical multi-resistant Pseudomonas aeruginosa in Huaibei area.Methods The antibiotic susceptibility of 13 different antibiotics of 36 multi-drug resistant P.aeruginosa was tested by K-B.The three-dimensional method was taken to differentiate the various beta-lactamases.The integron was determined by PCR with integron-specific primer.Results The positive rate of integron detection in multi-resistant Pseudomonas aeruginosa was 86.1%.Two kinds of integron with different length were found,i.e.1 000 bp and 2 000 bp.PSE-1,aadA2,aadB,aac(6)-II and CARB-8 were the resistance-related gene cassette in the integrons.Conclusions Integron may enroll in multiple resistance of multi-resistant Pseudomonas aeruginosa.

Hepatitis E ; immunology ; prevention & control ; Humans ; Viral Hepatitis Vaccines

OBJECTIVETo analyse the cases of platelet transfusion refractoriness after received HLA-matched unrelated donor hematopoietic stem cell transplantation, to analyze and identify the phenotype and genotype of CD36 in both the patient and stem cell donor, as well as the characteristic of antibody induced platelet transfusion refractoriness, and to analyse the efficacy of matched CD36-deficiency platelets transfusions.

METHODSThe CD36 expression on platelet and monocyte was analyzed by flow cytometry (FCM) in both patient and donor. Polymerase chain reaction sequence-based typing (PCR-SBT) was used to analyze the exons sequence of CD36 and HPA. Fast monoclonal antibody-specific immobilization of platelet antigen (F-MAIPA) and FCM were used to identify platelet antibodies in the patient. Short tandem repeat polymerase chain reaction (STR-PCR) was applied to monitor engraftment evidence. The platelet level was monitored. CD36- deficiency donor's platelets were selected from CD36- deficiency donor blood bank.

RESULTSThe donor was CD36 positive and the patient was typed I CD36 deficiency. The anti-CD36 antibody was identified in patient's serum (after transplantation), while the HLA and HPA-related antibodies were excluded. Sequence analysis of CD36 exon in the patient showed Exon 6 -1G>C(Change in splicing site) homozygote, which was a novel CD36 mutation. STR, HPA and CD36 of the patient (complete chimerism) were conversed to that of donor gene types on day 18 after allo-HSCT. The positive CD36 expression on platelet and monocyte in the patient was observed on day 96 after allo-HSCT. The patient showed the platelet transfusion refractoriness which was significantly improved after platelets transfusions from CD36 deficiency donors.

CONCLUSIONStem cell transplants resulted in anti-CD36 and caused platelet transfusion refractoriness, that was first reported in China. To ensure the efficacy of platelet transfusion, the CD36-deficiency patient should receive CD36 deficiency platelets for transfusion.

Antigens, Human Platelet ; Blood Platelet Disorders ; Blood Platelets ; CD36 Antigens ; China ; Humans ; Platelet Transfusion ; Thrombocytopenia

Adolescent ; Adult ; Aged ; Female ; Humans ; Liver ; physiopathology ; Liver Function Tests ; Male ; Middle Aged ; Severe Acute Respiratory Syndrome ; immunology ; physiopathology ; T-Lymphocyte Subsets ; immunology

OBJECTIVESTo investigate the different effects of closed suction drainage and non-drainage for total knee arthroplasty(TKA) and to provide reference information for the choice of clinical treatment.

METHODSRandomized controlled trials (RCTs) of closed suction drainage versus non-drainage for TKA were collected from the Cochrane Library, PubMed, EMBase, Springer, CBM, CNKI, VIP and WANFANG database. Methodological quality of the RCTs was independently assessed using the Consolidated Standards of Reporting Trials (CONSORT) checklist. Data analysis was performed by RevMan Version 5.1.6 based on the methods recommended by the Cochrane Collaboration.

RESULTSTwenty-one RCTs without bias were finally enrolled, and 1920 enrolled knees were identified into drainage group (979 knees) and non-drainage group (941 knees). A lower incidence of soft tissue ecchymosis was demonstrated in the closed suction drainage group (OR = 0.30, 95%CI: 0.24 - 0.49); however, compared with the non-drainage group, more loss of blood (MD = 320.03, 95%CI: 235.31 - 404.76) and more need of homologous blood transfusion (OR = 1.83, 95%CI: 1.26 - 3.29) were found in the closed suction drainage group. In addition, there were no significant differences of postoperative infection (OR = 0.53, 95%CI: 0.22 - 1.32), deep venous thrombosis (OR = 1.00, 95%CI: 0.46 - 2.18), and the joint range of motion (MD = -0.04, 95%CI: -1.11 - 1.02) between the two groups.

CONCLUSIONBased on the current evidence, no obvious advantage is demonstrated for closed suction drainage, in comparison with non-drainage for TKA.

Arthroplasty, Replacement, Knee ; Drainage ; statistics & numerical data ; Humans ; Postoperative Complications ; epidemiology ; Randomized Controlled Trials as Topic ; Range of Motion, Articular ; Venous Thrombosis ; epidemiology

Objective To investigate the effects of female sex hormones in cow's milk on metabolism of blood lipid in young male rats.Methods Forty-eight male Sprague-Dawley rats aged 21 days old were assigned randomly to 4 groups,each containing 12 rats,and fed with quantitative milk from postpartum cow,milk from pregnant cow,commercial whole milk and artificial milk,respectively.Serum total cholesterol (TC),triacylglyeriol(TG),high-density lipoprotein cholesterol (HDL-C),low-density lipoprotein cholesterol (LDL-C) and urinary creatinine (Cr) were determined with automatic biochemical analyzer.Serum progesterone(P4)and urinary free estriol(UFE3) were determined with immunochemiluminometric assays after all rats were killed at 53 days old.SPSS 13.0 software was used to analyze the data.Results Total estradiol and P4 were 1 189.66 pmol/L,833.98 pmol/L,588.17 pmol/L,286.48 pmol/L and 9.76 nmol/L,10.18 nmol/L,2.83 nmol/L,0.92 nmol/L in milk from pregnant cow,commercial whole milk,milk from postpartum cow and artificial milk groups,respectively.Serum TC were respectively(1.78?0.29) mmol/L,(1.94?0.20) mmol/L,(2.10?0.28) mmol/L and (2.11?0.22) mmol/L in pregnant milk,commercial whole milk,postpartum milk and artificial milk groups,and TC in pregnant milk group was lower than that in postpartum milk group or artificial milk group(P0.05).Conclusion Milk from pregnant cow may reduce serum TC in young male SD rats,which may be related to the conjoined effect of estradiol and P4.

With the universal two-child policy implementation, the birth rate increased, posing challenges to pediatrician allocation. Based on the birth rate, we calculated pediatrician demands and gaps during the period from 2016 to 2020 by the method of health service demand. The results showed that except Beijing and Shanghai, the ped-iatrician supply and demand ratios are less than 0 . 80 and additional numbers of pediatricians ranging from 191 981 to 198 287 are needed to meet the service demands. We recommend increasing the number of pediatricians taking both national supply-demand ratios and gaps by rationally using reasonable enrolment quota and improving the treatment and other reasonable ways to increase pediatricians. In addition, we should enhance information disclosure and guid-ance, and improve the hierarchical hospital visit system to alleviate the pressure of big cities.

With the universal two-child policy implementation, the birth rate increased, posing challenges to the maternity beds resource allocation. Based on the birth rate and the method of health service demand, we calculat-ed the maternity beds demands and gaps during the period from 2016 to 2020 . Results showed that numbers between 73 478 and 99 004 of maternity beds are needed annually and mainly allocated to eastern and central areas as well. In addition, the maternity beds of different delivery institutions should be adjusted and the hierarchical diagnosis system should be improved in order to alleviate the pressure of the obstestric acceepts in big cities like Beijing and Shanghai.

OBJECTIVETo observe the microstructure changes of rat alveolar bone around tooth root under orthodontic force loading.

METHODSTen 10-week-old rats were included in the study. Upper first molars were moved mesially with 0.196 N of force. The alveolar bone around the root of upper first molar was scanned by a micro-computed tomography scan system (SkyScan-1076) in different period after the initiation of orthodontic force loading (on the 3rd, 7th, 14th day after force loading) and analyzed by a specially-designed software to measure the microstructure parameters of alveolar bone (bone volume fraction, bone surface to volume ratio, structure model index, trabecular thickness, trabecular separation, trabecular number).

RESULTSFrom the 7th day, bone volume fraction [(41 ± 14)%], structure model index (1.51 ± 0.52) and trabecular separation [(90 ± 30) µm] changed significantly in the compressive area compared with those [(64 ± 15)%, (0.51 ± 0.85), (56 ± 10) µm] on the 3rd day. From the 14th day, bone volume fraction [(78 ± 14)%], structure model index (0.28 ± 0.20) and trabecular separation [(29 ± 13) µm] changed significantly in the tension area compared with those [(67 ± 14)%, (0.40 ± 0.41), (48 ± 15) µm] on the 7th day. No difference on trabecular number was found between the compressive area and tension area (P > 0.05).

CONCLUSIONSThe significant resorption of the alveolar bone was observed on the 7th days in the compressive area and the deposition of the alveolar bone was observed on the 14th day in the compressive area after orthodontic force loading.

Alveolar Process ; diagnostic imaging ; ultrastructure ; Animals ; Dental Cementum ; diagnostic imaging ; Male ; Molar ; diagnostic imaging ; Rats ; Rats, Sprague-Dawley ; Root Resorption ; diagnostic imaging ; Tooth Movement Techniques ; Tooth Root ; diagnostic imaging ; ultrastructure ; X-Ray Microtomography

OBJECTIVE: To study the serological characteristics and molecular biological basis of 8 individuals with Para-Bombay phenotypes in Guangxi area. METHODS: Serological tests were used to identify the blood groups of red cells. Molecular biological methods, including PCR-SSP for ABO genotyping and DNA sequencing for FUT1, were used to detect the genotypes of ABO and FUT1 which determined the expression of H antigen. RESULTS: Eight individuals in the study were all the Para-Bombay phenotypes, including 4 cases of B CONCLUSION There are varieties of molecular genetic mechanisms for Para-Bombay phenotypes. In this study, the FUT1 mutations that cause Para-Bombay phenotypes in Guangxi area are mainly h3, h
ABO Blood-Group System/genetics* ; Alleles ; China ; Fucosyltransferases/genetics* ; Genotype ; Humans ; Mutation ; Phenotype