Objective To investigate the clinical value of the detection of serum procalcitonin (PCT) and plasma D-dimer (D-D) levels in the early diagnosis of infection in critically ill children.Methods Solid-phase immune chromatography and immune nephelometry were used to determine the levels of serum PCT,plasma D-D,plasma C reactive protein (CRP) and WBC count in 302 critically ill children.Results The positive rate of serum PCT and the level of plasma D-D in the infected group (208 children) were significantly higher than those in the non-infected group (94 children)[96.6％(201/208) vs.10.6％(10/94),(1.65 ± 0.73) mg/L vs.(0.45 ± 0.21) mg/L,P ＜ 0.05].But there was no significant difference of plasma CRP level and WBC count between the 2 groups (P ＞0.05).The levels of serum PCT and plasma D-D were positively correlated to the severity of the illness (P ＜ 0.05).Conclusions The levels of serum PCT and plasma D-D are between important sensitivity markers for early diagnosis of critically ill children,illness severity assessment and therapeutic evaluation.The detection of plasma D-D plays an important role in early diagnosis of the degree and the width of coagulation disorder,and also provides the theoretic basis to use anticoagulation drugs for treating the critically ill children with infection.

Objective To investigate the diagnostic value of nuron specific enolase( NSE),S100βprotein,glial fibrillary acidic protein( GFAP)and myelin basic protein( MBP)in patients with early brain contusion and laceration. Methods One hundred and twelve cases with brain contusion and laceration diagnosed by CT or MRI were selected as our subjects who hospitalized Harrison international peace hospital from Apr. 2012 to Jul. 2013. Of them,68 cases with mild head injury were served as mild group and 44 cases of severe traumatic brain injury were served as severe group. And 83 healthy people without lung disease and nervous system diseases were served as control group. Electro chemiluminescence assay and ELISA methods were used to measure the level of NSE,S100β,GFAP,MBP. Results the level of serum NSE,S100β protein,GFAP and MBP in mild group were(18. 14 ± 6. 83),(0. 92 ± 0. 45),(0. 78 ± 0. 37))(4. 37 ± 1. 84)μg/ L,respectively, and(32. 11 ± 12. 48),(1. 58 ± 0. 94),(4. 26 ± 1. 96),(14. 72 ± 6. 77)μg/ L,respectively in severe group, and(8. 94 ± 3. 49),(0. 12 ± 0. 08),(0. 13 ± 0. 09),(1. 98 ± 0. 89)μg/ L,respectively in control group. There were significant differences among three groups( F = 137. 520,120. 083,283. 727,205. 569 respectively;P< 0. 01). All indexes were different between control and mild groups( q = 10. 599,13. 296,5. 881,6. 018;P< 0. 01),as well as between the mild and severe groups(q = 13. 600,9. 249,26. 639,22. 029;P < 0. 01),and between control and severe group(q = 23. 408,21. 258,32. 797,28. 134;P < 0. 01). Conclusion The level of serum NSE,S100β,GFAP,MBP can be used as early indicators of brain injury secondary diagnosis and secondary index for evaluating damage degree.

Objective To investigate the diagnostic value of the combined detection of serum glial fibrillary acidic protein (GFAP)and myelin basic protein (MBP)in the patients with early brain contusion and laceration.Methods ELISA was adopted to detect serum GFAP and MBP.The one-way ANOVA analysis was adopted to conduct the comparison among groups and the q test was adopted to conduct the pairwise comparison for analyzing the differences between the brain contusion and laceration patients with the healthy population.Results The serum GFAP and MBP levels had statistically significant differences among the mild craniocerebral injury group,severe craniocerebral injury group and the healthy control (P <0.05);which had statistically signifi-cant differences between the control group and the mild craniocerebral injury group(P <0.05);which had statistically significant differences between the mild craniocerebral injury group and the severe craniocerebral group (P <0.05 );which had statistically significant differences between the control group and the severe craniocerebral injury group (P <0.05).The serum GFAP and MBP levels in the early stage of brain contusion and laceration were significantly higher than those in the control group,moreover,the more severe the injury,the more obvious the increase of serum GFAP and MBP.Conclusion The combined detection of serum GFAP and MBP can be regarded as the auxiliary indexes for the early diagnosis of early brain contusion and laceration and the eval-uation of the injury degree.

Objective To observe the mechanisms of autophagic eukaryotic cells in Acinetobacter microvilli removal and protein histological study on apoptosis induced by macrophages .Methods A model of Acinetobacter baumannii infection was established in 24 female OCR mice .The mice were randomly divided into control group (n= 12) and observation group (n= 12) .The control group was injected with normal saline ,and the observation group was injected with autophagy eukaryotic cells ,the histopathological changes of Acinetobacter and the induction of macrophage apoptosis were observed .Results There was no significant difference in the bacterial counts between the two groups of mice immediately after implantation (P>0 .05) ,the bacterial counts in the 24 and 48 h in the observation group was significantly lower than that in the control group (P<0 .05) .The lung tissue of mice in the ob-servation group injected after autophagy was normal ,the alveolar cavity was open ,no abnormal substances were found ,the alveolar wall was not obviously thickened ,and no inflammatory cell infiltration was found in the wall .The mice in the control group were in-jected with normal saline and lacked the ability to remove Acinetobacter ,resulting in a large number of inflammatory cell infiltra-tion ,vasodilatation ,and congestion in some mice .Conclusion Autophagic eukaryotic cells injected with Acinetobacter baumannii can increase the clearance rate ,induce apoptosis of macrophages and improve the quality of Acinetobacter baumannii .

Objective To explore the efficacy and safety of 980 nm diode laser therapy for treatment of benign prostatic hyperplasia (BPH). Methods Data of 170 patients with BPH treated with 980nm diode laser system were reviewed. The mean operative time, blood loss, surgical complications, the international prostate symptom score (IPSS), bladder residual urine volume and flow rate changes were collected and analyzed. Results One hundred and seventy cases were safe during the perioperative period. The average operation time was (74 ± 11) min, surgical removal of prostate tissue mass of (54±12) g, blood loss (72±11) ml. There was no TUR syndrome occurred. 170 patients were followed up 2 to 24 months. The IPSS decreased from preoperative 25.0±5.5 to 9.0±2.5. The maximum flow rate increased from preoperative (6.2±2.3)ml/s to post-operative (17.4±3.5) ml/s. The residual urine volume decreased from preoperative (210.0±25.6) ml to postoperative (25.2±4.6) ml. All the differences were statistically significant (P＜0.05). Conclusion Transurethral vaporization of 980 nm diode laser could be a safe and effective treatment modality for BPH.

Objective To explore the value of low-dose CT in the diagnosis of congenital heart disease(CHD)with tracheal stenosis (CTS)in infants.Methods Data of low-dose CT and echocardiography in 18 cases of CHD with CTS were analyzed retrospectively, and compared with surgical findings.Results 18 cases of CST were comfirmed by surgical operation.The diagnostic accuracy of low-dose CT was 100%,and there was no statistical difference in the assessment of the range and degree in tracheal stenosis(P=0.76>0.05, P=0.767>0.05).42 cardiac anomalies were comfirmed by operation.The diagnostic accuracies of low-dose CT and echocardiography were 88.1% and 90.5% respectively,which was no statistical difference(P=0.825>0.05).15 cases of CTS(15/18,83.33%)were caused by the compression of the vessels,in which there were 9 cases by pulmonary artery sling,3 cases by vascular ring,3 cases by double aortic arches.Conclusion Low-dose CT can accurately diagnose CHD with CTS and provide important information for clinical practice.

Objective To investigate the risk factors and prognostic factors of bloodstream infection in intensive care unit(ICU). Methods The data of patients with bloodstream infection in ICU of Harrison International Peace Hospital from October 2014 to October 2017 were retrospectively analyzed and 210 patients with negative blood culture were selected. The physiological and laboratory parameters were compared between patients with positive blood culture and those with negative blood culture. Multivariate logistic regression analysis was used to screen the risk factors of bloodstream infection. Overall, 189 patients with bloodstream infection were classified into survival group(n=121)and death group(n=68)according to the survival status within 30 days after blood culture. The risk factors related to 30-day patient outcome following bloodstream infection were analyzed. Results A total of 189 cases of bloodstream infection were identified in the ICU during the 3-year period, including 118 cases due to gram-negative bacilli, 65 cases caused by gram-positive cocci, and 6 cases due to fungi. Univariate analysis showed that prior use of carbapenem or third generation cephalosporins, central venous catheterization, length of hospital stay≥2 weeks, and mechanical ventilation were the risk factors of bloodstream infection(P<0.05). Multivariate logistic regression analysis showed that prior use of carbapenems or third-generation cephalosporins(OR=20.15), central venous catheterization(OR=25.34), and mechanical ventilation(OR=18.26)were independent risk factors for bloodstream infection in ICU patients. Univariate analysis showed that prior use of carbapenem or third generation cephalosporins, mixed infection or septic shock, multi-drug resistant bacterial infection, and high APACHE Ⅱ(acute physiological and chronic health evaluation system Ⅱ)score were significant risk factors for 30-day mortality following bloodstream infection(P<0.05). Multivariate logistic regression analysis showed mixed infection or septic shock(OR=15.30), multi-drug resistant bacterial infection(OR=10.75)and high APACHE Ⅱ score(OR=13.70)were independent risk factors for 30-day mortality following bloodstream infection. Conclusions Prior use of carbapenem or third generation cephalosporins, central venous catheterization and mechanical ventilation are independent risk factors for bloodstream infection in ICU patients. Mixed infection or septic shock, multi-drug resistant bacterial infection, and high APACHE Ⅱ score are independent risk factors for 30-day mortality following bloodstream infection.

Objective To observe the influences of sonophoresis of Fufang Sanqi Xiaotong (Compound Notoginseng Pain-relieving) Ointment on changes of synovial morphology and expressions of chondrocyte caspase-9 and X-linked inhibitor of apoptosis protein (XIAP) in rabbits with knee osteoarthritis (KOA).Methods New Zealand white rabbits (n =32,6 months old) were randomly divided into group of sonophoresis of Fufang Sanqi Xiaotong (sonophoresis group),group of coupling agent ultrasound treatment (coupling agent group),model group and normal group (each n =8).Except of normal group,other groups received anterior cruciate ligament transaction (ACLT).After 6 weeks,sonophoresis group and coupling agent group were given corresponding therapies for 2 treatment courses and model group and normal group were not given any interventions.The changes of synovial histomorphology were observed with light microscope after HE staining,and expressions of caspase-9 and XIAP were detected by using immunohistochemistry technique in all groups after 2 treatment courses.Results The degeneration degree of synovial membrane under light microscope showed an ascending order in all groups as follows:normal group,sonophoresis group,coupling agent group and model group.The value of integral optical density (IOD) of caspase-9 was higher,and IOD value of XIAP was lower in sonophoresis group,coupling agent group and model group than those in normal group.The IOD value of caspase-9 was lower,and IOD value of XIAP was higher in sonophoresis group and coupling agent group than those in model group.The IOD value of caspase-9 was lower,and IOD value of XIAP was higher in sonophoresis group than those in coupling agent group.Conclusion The sonophoresis of Fufang Sanqi Xiaotong is superior to ultrasound treatment,and has the protective effect on cartilage and relief effect on synovial inflammation,and can delay KOA development.The mechanism may be related to decrease of caspase-9 expression and increase of XIAP expression.

Objective To investigate the feasibility and safety of laparoscopic combined with choledochoscopy for choledocholithotomy and primary suture. Methods 82 patients who underwent laparoscopic combined with choledochoscopy for choledocholithotomy and primary suture from Hechi People's Hospital from June 2016 to August 2018 were enrolled as study objects. They were divided into study group and control group according to the different treatment methods of common bile duct incision. 40 patients in the study group underwent primary suture of the common bile duct and 42 patients in the control group underwent T-tube drainage. The surgical outcomes and complications of the 2 groups were compared. Results All the patients in the two groups were operated smoothly and there were no cases of conversion to open surgery. The operation time, intraoperative blood loss, postoperative ambulation time, time of removal of abdominal drainage tube, and hospitalization time were lower in the study group than those in the control group, but the difference was not statistically significant (P>0.05). The incidence of electrolyte disturbance, postoperative recovery time, and hospitalization cost in the study group were lower than those in the control group, and the difference was statistically significant (P<0.05). The incidence of surgical complications in the study group was lower than that in the control group, but the difference was not statistically significant (P>0.05). Conclusion Laparoscopic combined with choledochoscopy for choledocholithotomy and primary suture in the treatment of intrahepatic and extrahepatic bile duct stones has good curative effect, rapid recovery, less internal environment disorder and low hospitalization cost. It is safe and feasible.

Enamel formation is a complex physiological process that depends on the coordinated regulation of multiple mechanisms. This process is quite sensitive to various local and systemic interference factors. Therefore, during the long period from the embryonic stage to adolescence or even adulthood, various interference factors may lead to enamel developmental defects. Among them, early life is the most sensitive stage to environmental factors exposure, while it is also the critical period of enamel development of deciduous and permanent teeth. Environmental factors exposure during this period often leads to varying degrees of enamel development defects. In this review, we generalize the research progress of environmental factors affecting enamel developmental defects, summarize the potential mechanisms of environmental factors leading to enamel developmental defects, and conclude the clinical management strategies based on tertiary prevention. This work hopes to provide a theoretical basis for preventing abnormal teeth development from the critical time window of early life, propose eugenics health consultation and promote children ′s oral health management.