ObjectiveThe type 2C protein phosphatases （PP2C） are involved in numerous plant signal transduction pathways. They mainly participate in plant stress response and regulate second metabolites biosynthesis via negatively regulating MAPK signaling pathway. Herein，we were to identify and analyze PP2C （CsPP2C） gene family from hemp genome，in hope of providing comprehensive insights for studying CsPP2C function during the development of hemp. MethodMolecular Evolutionary Genetics Analysis （MAGA）-X was used to construct phylogenetic tree. Expert Protein Analysis System （ExPASy），WoLF PSORT，Multiple EM for Motif Elicitation （MEME），Batch Conserved Domain Search （Batch-CD-Search），PlantCare，and TBtools were used，respectively，to predict CsPP2C physicochemical properties，subcellular localization，conserved motifs，protein structure，cis-element in promoter and collinearity with Arabidopsis PP2C. Cannabis sativa transcriptome and Real-time polymerase chain reaction（Real-time PCR） were used to analyze and verify gene expressions，respectively. ResultFifty-two CsPP2C with conserved domains were identified from the entire genome of hemp，encoding proteins ranging from 244 to 1 089 aa in length and with molecular weights ranging from 26.76 to 122.53 kDa. Those genes were mainly distributed in the nucleus，cytoplasm and chloroplast. The 47 CsPP2C were divided into 10 subfamilies，and the remaining 5 were not clustered. Seven pairs of homologous genes between hemp and Arabidopsis thaliana were identified according to collinear analysis. The light-responsive elements and abscisic acid elements are most abundant in the prediction. The gene expression heat map showed varied expression pattern of CsPP2C in different tissues. Real-time PCR results of three CsPP2C were consistent with transcriptome data. Moreover，alternative splicing analysis showed that some CsPP2C had alternative-splicing genes during evolution. ConclusionWe predicted and analyzed CsPP2C gene family in genomic scale and showed that CsPP2C are involved in many biological processes，whereby provides foundation for CsPP2C functional study.

Objective:To evaluate partial splenectomy (LPS) in the treatment of benign solid tumors of the spleen.Methods:The clinical data of patients with benign solid tumors of spleen treated by laparoscopy from Jan 2010 to Jun 2018 in the Third Affiliated Hospital of Soochow University was retrospectively analyzed. Patients were divided into LPS group and laparoscopic total splenectomy (LTS) group.Results:There were 21 cases in LPS group and 25 cases in LTS group. Differences between the two groups, operative time, blood loss, transfusion rate, maintenance of drain, postoperative hospital stay, costs, postoperative WBC and platelet count, and postoperative complications such as hemorrhage, fever, splenic fossa effusion, pancreatic fistula, venous thrombosis were statistically insignificant. However, the postoperative incidence of thrombocythemia in the LPS group were significantly lower compared to the LTS group (χ 2 =4.293, P<0.05). Conclusions:Patients with benign solid tumors of the spleen will benefit more from LPS compared to LTS.

Objective: To compare the clinical application of three-dimensional laparoscopic pancreatoduodenectomy (3D-LPD) with that of two-dimensional laparoscopic pancreatoduodenectomy (2D-LPD), and to explore the safety and feasibility of 3D-LPD. Methods: A retrospective analysis was made from the data of 45 patients with 3D-LPD and 45 patients with 2D-LPD who underwent total laparoscopic pancreatoduodenectomy from March 2017 to August 2018 at Department of Hepato-Pancreato-Biliary Surgery, the First People′s Hospital of Changzhou.The differences of intraoperative conditions, postoperative complications and postoperative pathological findings between the two methods were compared.Measurement data were compared with independent sample t-test, enumeration data were statistically analyzed with Chi-square test or Fisher exact probability. Results: The operation time of 3D-LPD group was shorter than that of 2D-LPD group ((335±95) min vs. (419±113) min, t=-3.817, P=0.000), which mainly showed that the time of digestive tract reconstruction was reduced ((92±26) min vs. (131±46) min, t=-4.951, P=0.000). The intraoperative blood loss in the 3D-LPD group was significantly less than that in the 2D-LPD group ((242±124) ml vs. (350±176) ml, t=-3.365, P=0.001), and the perioperative blood transfusion in the 3D-LPD group was significantly less than that in the 2D-LPD group (χ²=4.444, P=0.035). Postoperative hospitalization days and ICU stay time were not significantly different between the two groups(both P>0.05). Postoperative complications such as pancreatic fistula, biliary fistula, postoperative bleeding, gastric emptying disorders, abdominal infection, were not significantly different between the two groups(all P>0.05). Conclusions The operation time of 3D-LPD is shorter than that of 2D-LPD, and the amount of bleeding is less. Short-term clinical data showed that, 3D-LPD is effective, safe and worth popularizing.

Objective To explore the safety,feasibility,clinical efficacy and prognosis of gallbladder carcinoma treated by laparoscopy.Methods The clinical data of 43 patients with gallbladder carcinoma treated by laparoscopy radical cholecystectomy from Jan 2010 to Oct 2017 in the Third Affiliated Hospital of Soochow University were retrospectively analyzed.Results 15 cases underwent simple laparoscopic cholecystectomy,13 cases underwent laparoscopic cholecystectomy + lymphadenectomy and 15 cases underwent laparoscopic cholecystectomy + liver wedge resection + lymphadenectomy.The average operation time was (64 ± 32) min,(100 ± 45) min,and (217 ± 74) min,respectively.The average intraoperative blood loss was (67 ± 83) ml,(58 ± 63) ml and (182 ± 165) ml.The average postoperative hospital stay was (4.3 ± 2.2) days,(5.2 ± 2.0) days,(7.0 ± 1.7) days.All patients were diagnosed as gallbladder carcinoma by postoperative pathology.The median follow-up time was 14.5 months (range from 3 to 97 months).The cumulative survival rates of Tis,T1b,T2 and T3 stage were 100％,90％,52.7％ and 0,respectively (x2 =25.333,P ＜ 0.05).Conclusions It is safe and feasible to treat early gallbladder carcinoma by laparoscopy.

Objective To explore the advantages of susceptibility weighted imaging (SWI) in depiction of normal fetal vertebra and vertebral anomalies.Methods This prospective study was approved by our institutional review board, and written informed consent was obtained from every participant, Fifty-eight pregnant women (gestation age 22 to 39 weeks, average 29 ± 3 weeks) who were suspected of carrying babies with vertebral anomalies by ultrasound screening underwent 1.5 T fetal spine MRI[including half-fourier acquisition single-shot turbo spin-echo(HASTE),true fast imaging with steady-state(True FISP) and SWI sequences]. MR images were reviewed for their quality by two radiologists independently. The image scores in HASTE, True FISP and SWI were compared by using Kruskal-Wallis test and Mann-Whitney U test. Three segments (cervical, thoracic and lumbosacral segments, respectively) of 15 fetuses were, at random, collected to compare among HASTE,True FISP and SWI and then evaluated by ANOVA analysis.The diagnostic accuracy of the three sequences among 32 cases with follow-up results was calculated respectively and compared by using Chi-square test. Results There was statistical differences among three sequences(χ2=50.685,P<0.05).The scores of SWI was higher than that of True FISP, and the scores of True FISP was higher than that of HASTE in the evaluation of the fetal vertebra(P all<0.05).The differences among cervical,thoracic and lumbosacral segments on True FISP and HASTE showed significant difference statistically (P all<0.05), also the image quality of cervical segment could not meet the requirement of clinical diagnosis. The image quality of SWI was favorable clinically and no statistical difference among three segments was found(P>0.05).A total of 32 fetal vertebral anomalies were identified by follow-up after birth including hemivertebra (n=14), fusion of vertebrae (n=1), butterfly vertebra (n=1), multiple vertebral malformations(n=9),spinal bifida(n=5),caudal regression syndrome(n=2).The diagnostic accuracy of SWI, True FISP and HASTE was 93.75% (30/32), 56.25% (18/32) and 37.50% (12/32) respectively.The diagnostic accuracy of SWI was the best compared to that of True-FISP and HASTE(χ2=10.083,20.017;P<0.01). Conclusion SWI proved to be the optimal technique in depiction of fetal vertebra and vertebral anomalies than True FISP and HASTE,especially in depiction of cervical vertebra.

Objective To investigate the strategies in dealing with intraoperative CO2 embolizm during Laparoscopic hepatectomy (LH).Methods We collected and analyzed data from patients who underwent laparoscopic hepatectomy (LH) in our hospital from Jan.2013 to Aug.2017.There were 321 patients.The criteria for the diagnosis of CO2 embolism were rapid intraoperative decrease in petCO2 and SPO2 accompanied with tachyarrhythmia.Results 12 patients were diagnosed to have CO2 embolism.The rate was 3.7％.For these 12 patients,10 patients were dealt with laparoscopically and 2 patients were converted to open surgery.Conclusion CO2 embolism did not rarely occur in LH patients.Sophisticated operations and careful manipulation in LH are the only ways to prevent CO2 embolism.

Objective: To evaluate the clinical significance of C-reactive protein/albumin ratio in predicting the postoperative prognosis of pancreatic cancer patients. Methods: The clinical date of 97 patients with resectable pancreatic cancers who treated at Department of Hepatobiliary and Pancreatic Surgery, the third Affiliated Hospital of Soochow University from January 2005 to December 2015 were analyzed retrospectively. The cut-off value of CRP/Alb ratio was determined by the receiver operating characteristic(ROC) curve. According to the CRP/Alb ratio, patients were respectively divided into two groups: the high group(CRP/Alb ratio≥0.109) and the low group(CRP/Alb<0.109). The relationships between CRP/Alb ratio and clinical characteristics were analyzed by χ² test. Median survival and 1-year overall survival rate(OS) was calculated by Kaplan-Meier method.The risk factors of patients with poor prognosis were analyzed by univariate and multivariate Cox regression analysis model. Results: Tumor TNM stage(χ²=4.280, P=0.039) and differentiation(χ²=6.635, P=0.010) had significant relationship with CRP/Alb ratio. The median survival of higher CRP/Alb ratio group and lower CRP/Alb ratio group was 15 months and 23 months respectively. Compared with lower CRP/Alb ratio group, the 1-year OS of higher CRP/Alb ratio group decreased remarkablely, and the difference was statistically(χ²=10.207, P=0.001). Moreover, median survival and OS were decreased in patients with advanced age(≥65 years old: χ² =5.338, P=0.021), high TNM stage(ⅡB-Ⅲ: χ² =10.529, P=0.001), poor tumor differentiation(χ²=5.380, P=0.020), vascular invasion(χ² =7.856, P=0.005) and positive surgical margin(χ²=9.059, P=0.003). A high CRP/Alb ratio was identified as an independent risk factor of poor prognosis for patients with pancreatic cancer(HR=1.832, 95% CI: 1.067-3.144, P=0.028). Besides, old age(HR=1.684, P=0.014), high TNM stage(HR=1.666, P=0.031), vascular invasion(HR=1.834, P=0.024) and positive surgical margin(HR=2.205, P=0.023) were also included. Conclusion Preoperative CRP/Alb ratio can be an important clinical factor for assessing the prognosis of patients with resectable pancreatic cancers, and high CRP/Alb ratio suggests poor prognosis.

Chemokines participate in many biological functions including immune inflammatory response,various metabolic reactions and damage stress response.Meanwhile,they also play a crucial role in the process of tumor progression including regulating tumor proliferation,invasion and metastasis,and mediating immune cells infiltration and angiogenesis in tumor tissue as well as the tolerance to antitumor treatment.Pancreatic cancer is one of the highly malignant digestive system neoplasms with relatively high risk of early local invasion and distant metastasis,resulting in high mortality.At present,the specific mechanism of the development of pancreatic cancer has not been clarified yet.In recent years,the role of chemokine CXC (chemokine subfamily) and its receptor CXCR (CXC chemokine receptors) in pancreatic cancer has become a hot research topic and great progress has been made in this field.This paper overviewed the recent research advance on the functions of chemokine CXC and their receptors in pancreatic cancer.

Objective To investigate the sedative effect of different doses of buccal dexmedeto-midine premedication during peri-anesthesia in pediatric patients undergoing tonsillectomy and/or ade-noidectomy.Methods Eighty pediatric patients undergoing tonsillectomy and/or adenoidectomy in department of otorhinolaryngology,54 males and 26 females,aged 4-12 years,ASA Ⅰ or Ⅱ,from June,2014 through May,201 6 were enrolled,n =20 in each group.Children were randomly assigned to receive buccal dexmedetomidine 0 μg/kg (group A),1 μg/kg (group B),2 μg/kg (group C)and 4μg/kg (group D)60 min before transporting to operating room.Sedation score (OAA/S scale)was monitored before and after administering buccal dexmedetomidine.Time of post-operative first spon-taneous respiration,opening eyes,extubation,anxiety score (SAS scale),as well as OAA/S scale, pain intensity (FLACC),and adverse events 60 min after surgery were recorded.Results Compared with group A and group B,markedly superior OAA/S within 60 min after administering buccal dexmedeto-midine in group C and group D were observed (P < 0.05 ).Compared with group A and group B,the OAA/S score 5 min after extubation was lower in group D.FLACC scores within 30 and 60 min after extu-bation in group D were lower than those in group A.Group D showed obviously prolonged time of post-op-erative first spontaneous respiration,opening eyes and extubation compared with the other groups (P <0.05).All the rates of adverse events were similar.Conclusion 2 or 4 μg/kg premedecation of buccal dexmedetomidine 60 min before transporting to operating room can effectively and safely sedate pediatric pa-tients when entered operating room,improve parental separation,mask and sevoflurane acceptance,as well as decrease the stress induced by intubation and post-operative pain.