ObjectiveTo evaluate totally laparoscopic Meckel's diverticulectomy in comparison with laparoscopic-assisted or open diverticulectomy.MethodsThe clinical data of 58 cases of Meckel's diverticulum admitted between January 2006 and January 2011 were analyzed.Cases were divided into three groups according to different period of time. As a result,totally laparoscopic surgery was performed in 13 cases,laparoscopic-assisted resection in 25 cases and open diverticulectomy in 20 cases. Totally laparoscopic group was compared with the other two groups in operation time,flatus defecation time,the incidence of postoperative complications and postoperative hospital stay.ResultsThe mean length of incision was ( 1.6 ± 0.4 ) cm,the mean operation time was ( 41 ± 5 ) min,flatus defecation time was (21.2 ±3.7) h,and the postoperative hospital stay was (6.3 ± 1.2) d in totally laparoscopic group.While that was (2.5 ± 1.2 ) m,( 38 ± 2 ) cm,( 23.6 ± 4.2 ) h,( 6.5 ± 2.3 ) d,respectively in laparoscopicassisted group,and the mean length of incision was (5.0 ± 2.2 ) cm,the mean operation time was (51 ± 6 )min,flatus defecation time was (32.3 ± 6.7) h,the postoperative hospital stay was (8.4 ± 3.8) d in open surgery group.Compared with conventional laparotomy,laparoscopic techniques enjoy advantages of minimal invasion,shorter operative time,fewer complications,shorter recovery period and earlier gastrointestinal recovery(P ＜ 0.05). There were nosignificant differences in operative time, recovery period and complications between totally laparoscopic group and laparoscopic-assisted group.ConclusionsTotally laparoscopic Meckel's diverticulectomy is safe,effective and miniinvasive in experienced hands.

Objective To explore the feasibility and effect of laparoscopic Ladd's surgery for the treatment of intestinal malrotation in infants.Methods The clinical data of 50 infants with intestinal malrotation who were admitted to the Wuhan Medical & Health Center for Women and Children from January 2011 to December 2013 were retrospectively analyzed.Of 50 infants, 27 infants receiving the open Ladd's surgery were allocated into the open surgery group and 23 infants receiving the laparoscopic Ladd's surgery were allocated into the laparoscopy group.The operation time, time to anal exsufflation, duration of hospital stay, postoperative incision infection and intestinal obstruction in the 2 groups were observed.All the patients were followed up by outpatient examination or telephone interview till March 2014.The measurement data with normal distribution were presented as x-± s and analyzed by the t test, and count data were analyzed using the chi-square test or Fisher exact probability.Results The operation time, time to anal exsufflation and duration of hospital stay were (69 ± 7)minutes, (41 ±9)hours and (10.4 ± 2.4)days in the open surgery group, which was significantly different from (92 ± 13)minutes, (28 ±5)hours and (6.4 ± 1.5) days in the laparoscopy group (t =6.21, 16.50, 6.34,P ＜ 0.05).Two infants had incision infection and 1 infant had intestinal obstruction in the open surgery group.There was no patient with complications in the laparoscopy group.All the patients were followed up for the median time of 13 months (range, 6-24 months), with a good survival and no other symptoms.Conclusion Laparoscopic Ladd's surgery is safe and feasible compared with open surgery, and it could be used as a prior operation method for treatment of intestinal malrotation in infants.

Objective To explore the correlation between plasma asymmetric dimethylarginin(ADMA) and essential hyper‐tention(EH) by comparing the difference of plasma asymmetric dimethylarginine levels between Kazak and Han patients with EH in Xinjiang .Methods 91 Kazak and 112 Han patients with EH were selected .81 Kazak and 110 Han healthy people were selected as healthy control groups .The plasma ADMA levels in EH groups and the control groups were measured by using the reverse phase‐high performance liquid chromatography (RP‐HPLC) .Meanwhile the liver function ,renal function ,blood lipids ,blood glucose and fructosamine were measured .Results Kazak and Han patients with EH had higher levels of plasma ADMA than the control groups (P<0 .01);there was a positive correlation between the plasma ADMA and blood pressure levels of EH patients in two na‐tionalities(r=0 .715 ,P<0 .01 for Kazak ;r=0 .645 ,P<0 .01 for Han) .Conclusion Both Kazak and Han patients with EH have higher levels of ADMA than the respective healthy control group in Xinjiang .The correlation between the plasma levels of ADMA and EH existed ,which indicate that ADMA might be involved in the occurrence and development of EH .

［18F］6-fluoro-3, 4-dihydroxy-L-phenylalanine(［18F］F-DOPA)has been used as a radiotracer for Parkinson′s disease over 30 years. The previously reported electrophilic synthesis method has low radiochemical yield(RCY), low specific activity(SA)and other defects. Recent reported nucleophilic synthesis of ［18F］F-DOPA could overcome the disadvantages. In this paper, the nucleophilic synthetic methods for ［18F］F-DOPA are reviewed.

The human serum proteome is closely associated with the state of the body. Endogenous peptides derived from proteolytic enzymes cleaving on serum proteins are widely studied due to their potential application in disease-specific marker discovery. However, the reproducibility of peptidome analysis of endogenous peptides is significantly influenced by the proteolytic enzymes within body fluids, thereby limiting the clinical use of the endogenous peptides. We comprehensively investigated the N and C terminus of endogenous peptides using peptidomics. The cleavage site patterns of the N and C terminus and adjacent sites from all the identified endogenous peptides were highly conserved under different sample preparation conditions, including long-term incubation at 37°C and pretreatment with repeated freeze-thaw cycles. Furthermore, a distinguishable cleavage site pattern was obtained when a different disease serum was analyzed. The conserved cleavage site pattern derived from proteolytic enzymes holds potential in highly specific disease diagnosis.
Carcinoma, Hepatocellular ; blood ; diagnosis ; Chromatography, High Pressure Liquid ; Chromatography, Reverse-Phase ; Humans ; Liver Neoplasms ; blood ; diagnosis ; Mass Spectrometry ; Nanotechnology ; Peptide Hydrolases ; metabolism ; Peptides ; blood ; Protein Structure, Tertiary ; Proteome ; analysis ; Proteomics ; Silicon Dioxide ; chemistry ; Time Factors

Objective:To explore the optimal surgical time of laparoscopic appendectomy after conservative treatment of appendiceal abscess in children.Methods:Clinical data of 86 children with appendiceal abscess diagnosed in the Department of General Surgery, Wuhan Children′s Hospital, Tongji Medical College, Huazhong University of Science and Technology from January 2016 to June 2020 were retrospectively analyzed.According to the delayed laparoscopic appendectomy interval after the appendiceal abscess was cured, 86 children were divided into group A, B and C. Briefly, patients in the 3 groups were treated with laparoscopic appendectomy 4 weeks, 8 weeks and over 12 weeks after the appendiceal abscess was cured, respectively.Children with recurrent appendicitis during delayed operation were not included.The incidence of appendicitis recurrence during delayed operation, the incidences of intraoperative complications, conversion to laparotomy, and postoperative complications, operation time, the time of postoperative intestinal function recovery, and postoperative hospital stay were compared among 3 groups.Results:There were 10, 31 and 45 cases in group A, B and C, respectively.Among them 10, 30 and 39 patients received laparoscopic appendectomy, and 0, 1 and 6 cases had appendicitis recurrence in group A, B and C, respectively.There were no significant differences in the age, gender, diameter of appendiceal abscess, inflammatory indexes at diagnosis of diagnosing appendiceal abscess, cure time of conservative treatment of abscess, and inflammatory indexes at laparoscopic appendectomy among the 3 groups (all P>0.05). The incidence of appendicitis recurrence in group C(13.33%) was significantly higher than that in group A (0) and group B (3.22%)( P<0.05). There was no significant difference in the incidence of appendicitis recurrence between group A and group B( P>0.05). The incidences of intraoperative(group A, B, C was 40.00%, 10.00%, 10.26%, respectively) and postoperative complications (group A, B, C was 40.00%, 6.70%, 5.10%, respectively), and conversion to laparotomy(group A, B, C was 20.00%, 0, 0), operation time [group A, B, C was (106.70±7.42) d, 41.40±10.44) d, (39.60±11.27) d, respectively], postoperative intestinal function recovery time [group A, B, C was(5.80±2.15) d, (0.93±0.17) d, (0.83±0.11) d], and postoperative hospital stay[group A, B, C was(12.40±4.15) d, (1.67±0.31) d, (1.58±0.44) d] in group A were significantly higher than those in group B and group C(all P<0.05), but no significant differences were found between group B and group C(all P>0.05). Conclusions:Eight weeks are the best time for laparoscopic appendectomy after conservative treatment of appendiceal abscess in children.

Objective: To explore the characteristics of the default memory network (DMN) and working memory network (WMN) at resting state brain functional network of exercise addiction people. Methods: Twenty-nine sports addicts and 26 non-sports addicts matched by sex, age, average education level and sports dependence were screened by the exercise addiction index (EAI). Resting status brain scanning was performed with 3.0T magnetic resonance scanner.Sparse approximation coefficients independent component analysis (SACICA) model was used to analyze the independent components of brain networks. Results: Compared with the DMN template, four features were extracted, including " basic conformity" , " less frontal lobe" , " more frontal lobe" and " less occipitoparietal lobe" . Compared with the parameters of " basic conformity" , the proportion of exercise addiction group (33.3%, 9/27) was higher than that of control group (18.2%, 4/22). In the other three parameters, the proportion of exercise addiction group (37.0%, 10/27; 3.7%, 1/27; 22.2%, 6/27) was lower than those of control group (45.5%, 10/22; 22.7%, 5/22; 27.3%, 6/22). But Chi-square test showed that there was no significant difference between the two groups(all P>0.05). Compared with the WMN template, six features were extracted, including " basic conformity" , " more frontal and parietal lobes" , " more parietal lobes" , " more frontal lobes" , " less frontal lobes" and " less parietal lobes" . The percentages of the first three features in exercise addiction group (22.2%, 6/27; 7.4%, 2/27; 7.4%, 2/27) were less than those in the control group (45.5%, 10/22; 22.7%, 5/22; 9.1%, 2/22), while the percentages of the last three features in the exercise addiction group (7.4%, 2/27; 37.0%, 10/27; 14.8%, 4/27) were higher than those in the control group (4.5%, 1/22; 13.6%, 3/22; 0, 0). Chi-square test showed that there was no significant difference in all features between the two groups was statistically(P>0.05). Conclusion No significant characteristic changes are found in DMN and WMN networks of exercise addiction population.