We investigated the distribution characteristics of Yersinia enterocolitica in Ningxia ,China .In accordance with the requirements of the National Yersinia enterocolitica Disease Monitoring Scheme ,Y .enterocolitica were isolated from differ‐ent kinds of specimens collected in Ningxia in 2008 to 2013 .Then they were serotyped and detected for virulence gene and ana‐lyzed the pulsed‐field gel electrophoresis (PFGE) in Chinese CDC .It was found that 173 strains were isolated from various types of 9 643 specimens ,and the detection rate was 1 .79% .There were statistical differences among detection rates in differ‐ent years and in different specimens (P<0 .01) .Pathogenic serotypes O∶3 and O∶9 carried ail gene and ystA gene were de‐tected from specimens of pigs and diarrhea patient .Non‐pathogenic serotypes O∶5 and O∶8 and non‐typeable strains didn't carry ail gene and ystA gene ,and also can't be detected from swine ,cattle ,sheep ,chickens and dogs .In conclusion ,Y .en‐terocolitica was widely distributed in Ningxia and pigs were the dominant animal host .In all pathogenic serotypes ,the highest proportion was O∶3 following by O∶9 .It was no time and regional difference in the distribution of that in Ningxia ,China .

Bone formation on hydroxyapatite (HA) coating in the presence of gaps is important for clinical application. Pure Ti and hydroxyapatite coated by plasma sprayed samples were implanted in dog respectively. The implants were surrounded by gaps of 2 mm, and the follow-up period was 12 weeks. Histological examination and histomorphometry revealed that gaps could be bridged by bone provided the hydroxyapatite coating was applied, and that pure Ti implants were surrounded by fibrous tissue with no bone contact at all.
Animals ; Bone Substitutes ; Coated Materials, Biocompatible ; pharmacology ; Dogs ; Femur ; injuries ; surgery ; Hydroxyapatites ; pharmacology ; Implants, Experimental ; Male ; Osseointegration ; Osteogenesis ; drug effects ; Titanium

Objective:To investigate the efficacy of primary closure versus T-tube drainage in patients with common bile duct stones after laparoscopic common bile duct exploration and stone extraction. Methods:Fifty-two patients with common bile duct stones who received treatment at The Second Affiliated Hospital of Guizhou Medical University between February 2021 and February 2023 were included in this study. All patients underwent laparoscopic common bile duct exploration and stone extraction and then were divided into two groups ( n = 26 per group) using a randomized controlled trial design with allocation based on a random number table. The control group received T-tube drainage postoperatively, whereas the observation group underwent primary suture treatment. Both groups were observed for 3 days postoperatively to compare various postoperative clinical indicators, including serum levels of cortisol, adrenaline, C-reactive protein, interleukin-6, direct bilirubin, total bile acid, alkaline phosphatase, and gamma-glutamyl transferase, and the occurrence of postoperative complications. Results:The operative time in the observation group was significantly shorter than that in the control group [(105.30 ± 5.89) minutes vs. (121.36 ± 5.86) minutes, t = 9.86, P < 0.001]. The intraoperative blood loss in the observation group was significantly less than that in the control group [(40.31 ± 4.53) mL vs. (45.20 ± 4.76) mL, t = 3.80, P < 0.001]. The length of hospital stay in the observation group was significantly shorter than that in the control group [(12.01 ± 2.86) days vs. (14.32 ± 2.73) days, t = 2.98, P = 0.005]. The gastrointestinal function recovery time in the observation group was shorter than that in the control group [(31.42 ± 2.59) days vs. (37.62 ± 2.63) days, t = 8.57, P < 0.001]. The bile drainage volume in the observation group was less than that in the control group [(168.69 ± 15.41) mL vs. (275.62 ± 15.32) mL, t = 25.09, P < 0.001]. The serum level of cortisol in the observation group was significantly higher than that in the control group [(469.63 ± 20.62) mmol/L vs. (359.65 ± 19.87) mmol/L, t = 19.58, P < 0.001]. The serum level of adrenaline in the observation group was significantly higher than that in the control group [(274.62 ± 20.21) ng/L vs. (198.64 ± 20.16) ng/L, t = 13.57, P < 0.001]. The serum level of C-reactive protein in the observation group was significantly higher than that in the control group [(3.42 ± 0.37) mg/L vs. (2.74 ± 0.25) mg/L, t = 7.77, P < 0.001]. The serum level of interleukin-6 in the observation group was significantly higher than that in the control group [(112.36 ± 8.94) μg/L vs. (87.62 ± 8.63) μg/L, t = 10.15, P < 0.001]. The serum level of direct bilirubin in the observation group was significantly lower than that in the control group [(24.52 ± 4.62) μmol/L vs. (35.62 ± 4.87) μmol/L, t = 8.43, P < 0.001]. The serum level of total bile acid in the observation group was significantly lower than that in the control group [(10.62 ± 4.21) U/L vs. (17.64 ± 4.16) U/L, t = 6.05, P < 0.001]. The serum level of alkaline phosphatase in the observation group was significantly lower than that in the control group [(100.21 ± 10.24) mg/L vs. (112.74 ± 11.25) mg/L, t = 4.20, P < 0.001]. The serum level of gamma-glutamyl transferase in the observation group was significantly lower than that in the control group [(122.36 ± 8.94) μg/L vs. (142.62 ± 5.63) μg/L, t = 9.78, P < 0.001]. The incidence of complications in the observation group was significantly lower than that in the control group [7.69% (2/26) vs. 30.77% (8/26), χ2 = 4.46, P = 0.035]. Conclusion:Compared with T-tube drainage, primary closure following laparoscopic common bile duct exploration and stone extraction can reduce patient stress responses, improve liver function, shorten postoperative recovery time, and result in a lower incidence of complications.