Objective The aim of this article is to discuss the relation between serum uric acid and prehypertension, and to evaluate the influence of age, obesity, fasting plasma glucose (FPG) and lipids in Chinese adults. Methods All the 14 451 non-hypertensive samples were analyzed for blood pressure, body mass index (BMI), FPG, lipids and serum uric acid. Results The serum uric acid levels were stratified by quintiles, after adjustment for relevant factors, OR values of prehypertcnsion increased with the elevated uric acid levels. Serum uric acid level was 200-380 μmol/L, it had a linear relationship with the risk of prehypertension, 200 μmol/L as a turning point for this linear relationship, FPG could affect their correlation (P ＜ 0.0001 ). Conclusions Serum uric acid was associated with prehypertension, independent of metabolic risk factors. The associations were not significant in old individuals. FPG may modify the associations.

Objective To investigate the therapeutic effect of KGF-2 mutants on radiation-induced intestinal mucosal injury.Methods Specific pathogen free (SPF) female C57BL/6J mice were randomly divided into 4 groups, which were treated with/without KGF2 mutant and/or bone marrow cell transplantation.All the 4 groups were radiated with one-time whole bodyγ-ray exposure of 12 Gy.Also one untreated group was included as control.The therapeutic effect of recombi-nant human KGF-2 mutants on radiation-induced intestinal mucosal injury was analyzed by the survival rate at the 30th day, the pathological change and the apoptosis as well as autophagy status of small intestine at 72 hours after exposure.Results After irradiation, all the mice in the untreated group died within 9 days while the mice treated with KGF-2 mutant combined with bone marrow cell transplantation showed a 70%survival rate at the 30th day.We also found that intestinal mucosa of the mice in this group had a more intact structure, a higher level of autophagy and a lower level of apoptosis via HE staining and immunohistochemistry.Conclusion KGF-2 mutant has a significant therapeutic effect on radiation-induced intestinal mucosal injury.

ObjectiveTo investigate the diagnostic value of single balloon enteroscopy (SBE) for obscure gastrointestinal bleeding.MethodsA total of 78 SBE procedures was conducted on 72 patients with obscure gastrointestinal bleeding,with 40 via oral route and 38 via anal route.The procedure time,insertion depth and rate of positive finding were recorded.ResultsFor 40 SBE procedures performed via oral route,the mean procedure time was 60 minutes ( 15-110 minutes),and the mean insertion depth was 195 cm at the distal end of Trentz ligament (30-240 cm).For 38 SBE procedures performed via anus,the mean procedure time was 75 minuets (30-120 minutes),and the mean insertion depth was 160 cm at the proximal end of ileocecal valve (50-200 cm ).The whole diagnostic yield of obscure gastrointestinal bleeding was 62.5％.ConclusionSBE is a safe and useful tool for the diagnosis of obscure gastrointestinal bleeding.

spectrum beta-lactamase genes:blaOXA-128 and blaOXA-129.

Aim To find the material foundation of treatment for diabetes in Coptidis Rhizoma ( RC ) . Methods The antihyperglycemic effect of RC alka-loids ( berberine, coptisine, palmatine, epiberberine, and jatrorrhizine) was evaluated in spontaneity diabe-tes KK-Ay mice. Results After 40 days′ oral admin-istration ( 225 mg · kg-1 · d-1 , ig ) , berberine and coptisine significantly suppressed the elevated fasting blood glucose level and ameliorated the glucose toler-ance . Body weight gain of KK-Ay mice was significant-ly decreased in the epiberberine-treated group. Berber-ine improved insulin resistance and jatrorrhizine in-creased the SOD activity, decreased the MDA level. Conclusions These results indicate that the main an-tihypoglycemic effect constituents are berberine and coptisine, while they show different mechanisms. Pal-matine, epiberberine and jatrorrhizine display different potential roles in the treatment of diabetes. The meth-ylene-dioxy groups at the C-2 , C-3 , C-9 and C-10 po-sitions are indispensable for antihyperglycemic effect of RC alkaloids.

A total of 16 patients with airway stenosis including benign lesion (n=4) and malignant disease (n=12) were treated with argon plasma coagulation (APC) and Z-type covered retrievable metallic stent.L-and I-type stents were placed by guidance of brenchoscope,while Y-type stent was placed by the guidance of both bronchoscope and fluoroscope.Airway stenosis was from (58.8 +9.1)% before APC to (7.5±2.4)% after APC in tracheal,from (67.4±7.4)% to (19.4±4.1)% in left main bronchus,from (69.6±8.9)% to (27.6±5.4)% in right main bronchus.Symptoms of chest distress and breathlessness were improved remarkably,tachypnea indexes were decreased,but Kamofsky performance scope were increased.Twelve stents were successfully installed by the first time,including 9 Y-shape;otherwise,4 stents failed to be installed because the carinal was too wide to insert the Y-shape stent in two patients with lung cancer,finally,L+I type stents were used.Median survival time after successful stenting was 10 months,and mean time was 13 months.APC combined with bifurcated metal stants relieved obstruction and improved quality of life.

Objective To compare the yield of endoscopic ultrasonography guided fine needle aspira-tion (EUS-FNA) with 3 different sample processing methods. Methods The clinical data of 118 patients, who underwent EUS-FNA performed by one physician from February 2005 to September 2008, were retrospectively analyzed. The FNA sample processing methods included liquid-based cytology, on-site cytology and smear method. The pathological diagnosis was classified as definite, suspicious malignancy, dissatisfying sampling and indefinite. Results The success rate of obtaining samples through on-site cytological procedure was 95.2% (40/42), which was significantly higher than that of conventional smear (32/47, 68%, P <0. 05), and was higher than that of liquid-based cytological method (26/29, 89. 7% ), but without significant differ-ence (P>0.05). The yield of definite diagnosis with liquid-based cytology and on-site cytology were 82.8% (24/29) and 78. 6% (33/42), respectively, which were both significantly higher than that of smear method (57. 4%, 27/47, P <0. 05). The sensitivity and accuracy of on-site cytology were higher than those of smear method and liquid-based cytology, but without significant differences (P >0. 05). Conclusion Compared with conventional smear method, an-site cytology and liquid-based cytology yield more results from EUS-FNA.

Objective To evaluate the influence of C-reactive protein (CRP),insulin resistance (IR) and epicardial fat volume (EFV) on the extent of coronary atherosclerosis in patients with different body mass index(BMl).Methods One hundred and three patients with coronary artery disease were involved in current study who underwent 64-slice dual source CT and percutaneous coronary angiography.Measurements of height,weight,waist circumference (WC) were recorded,and BMI was calculated.All patients were divided into obesity group (n =45) and non-obesity group (n =58) based on BMI.EFV were calculated through 64-slice dual source CT.Blood samples were collected for biochemical examination.Gensini score were adopted to quantify the severity of coronary artery stenosis.The relationship between Gensini score and EFV,CRP and homeostasis model assessment-insulin resistance(HOMA-IR) index were statistical analyzed by SPSS16.0 software.Results The level of CRP,WC,EFV and BMI in obesity group were (11.0 ± 5.8) mg/L,(96.1 ± 7.0) cm,(122.7 ± 43.3) cm3,(27.9 ± 2.9) kg/m2 respectively,significantly higher than those in non-obesity group ((6.5 ± 3.4) mg/L,(86.4 ± 7.6) cm,(92.9 ± 39.5) cm3,(22.4 ± 1.9) kg/m2) and the differences were significant (t =2.24,6.74,3.64,11.74,and P ＜ 0.05).CRP were positively correlated with EFV (r =0.404,0.364,P ＜0.05) in both obesity and non-obesity group,While HOMA-IR were only associated with BMI in obese group(r =0.322,P ＜0.05).Gensini score in non-obesity groups were positively related with EFV and CRP (r =0.358,0.315,P ＜ 0.05),while in obesity groups were positively related with EFV,CRP and HOMA-IR(r =0.348,0.297,0.384; P ＜ 0.05).The associations between Gensini score and CRP were not significant in obesity group after adjusting BMI and WC.Multiple linear regression analysis showed that EFV and diabetes mellitus were independent risk factors of patient Gensini score.Conclusion Coronary atherosclerosis is positively related with EFV and CRP in all patients.While,coronary atherosclerosis is influenced by BMI,WC and HOMA-IR in obese group.EFV is an independent risk factor of coronary atherosclerosis.

Objective To study the molecular mechanism of Bel subtype caused by mutation p.R168W of glycosyltransferase B.Methods Serological test,SSP-PCR and direct sequence the Exon6 and Exon 7 of the ABO gene.Construct a 3D molecular model and predict the structural impact of GTB protein mutations.Results A antigen or B antigen can't be detected on the surface of the propositus' RBC,and only anti-A antibodies were detected in her serum.But serological test indicated her daughter's blood type was a normal B type.SSP-PCR test indicated propositus' ABO gene type is O1 B.By gene sequencing the Exon 6 and Exon 7 of the ABO gene,a ABO Bel allel(c.502C＞T,p.R168W)was discoverd in both the propositus and her daughter.Through the propositus' daughter coexisted Bel gene with normal B gene,her blood type was a normal B type.Conclusions ABO gene c.502C＞T mutations cause Bel phenotypes in patients by reducing the stability of GTB.

Abstract: Objective　To investigate the antimicrobial activity of omadacycline (OMC) against clinical Streptococcus agalactiae (GBS) isolates, as well as its relationship with biofilm formation, resistance genes and virulence genes. Methods　A total of 136 strains of Streptococcus agalactiae isolated from Shenzhen Nanshan People's Hospital between 2015 to 2020. The minimum inhibitory concentration (MIC) of OMC against Streptococcus agalactiae was determined by broth microdilution. Crystal violet staining was used to detect the biofilm formation ability of GBS. Resistance genes (tetM, tetO, tetK, ermB, OptrA) and virulence genes (cpsⅢ, bca, fbsA, cpsA, scpB) were investigated by polymerase chain reaction (PCR). Results　Among the 136 clinical isolates of GBS, 20 strains (14.7%) were resistant to OMC, 64 (47.1%) were intermediate, and 52 (38.2%) were sensitive. Fifty-seven strains (41.9%) were biofilm-positive, 20 of which (35.1%) were sensitive to OMC. Seventy-nine strains (58.1%) were biofilm-negative, 32 of which (40.5%) were susceptible to OMC. There was a statistically significant difference in the sensitivity rates between the two groups of strains (χ2=63.062, P<0.001), but there was no significant difference in the sensitivity of OMC among the biofilm-positive strains (Fisher's exact test, P=0.824). The resistance rates of tetM, tetO, ermB and OptrA positive strains were higher than those of negative strains, while tetK was opposite. The presence of tetM (Z=0.815, P=0.415), tetO (Z=0.151, P=0.88), tetK (Z=0.567, P=0.571), ermB (Z=1.198, P=0.231) resistance genes in Streptococcus agalactiae had no significant impact on the sensitivity of OMC. However, the presence of the OptrA resistance gene showed a statistically significant effect on the sensitivity of OMC (Z=2.913, P=0.004). The virulence factors cpsⅢ, bca, fbsA, cpsA and scpB were all detected at a rate higher than 50%. The presence of the virulence genes cpsⅢ (Z=0.222, P=0.824), bca (Z=0.141, P=0.888), fbsA (Z=0.813, P=0.416), and cpsA (Z=1.615, P=0.106) in Streptococcus agalactiae had no significant impact on the sensitivity of OMC. However, there was a significant inter-group difference in the scpB virulence gene (Z=2.844, P=0.004), but the rank mean values and resistance rates of scpB-positive strains were lower than those of the negative strains. Conclusions　The formation of biofilm in Streptococcus agalactiae reduces its sensitivity to OMC, but there was no significant difference in the sensitivity to OMC among the biofilm-positive strains. The presence of resistance genes tetM, tetO, tetK, ermB, and virulence genes cpsⅢ, bca, fbsA, cpsA, scpB in Streptococcus agalactiae is not associated with OMC resistance, but the presence of the resistance gene OptrA is correlated with OMC resistance..