Objective: To characterize longitudinal trajectories of testicular development in boys and breast development in girls, so as to provide reference data for understanding patterns of pubertal sexual maturation. Methods: Based on the Shanghai Pudong New Area Cohort Study on Growth, Development and Health in Children and Adolescents, a baseline survey was conducted in 2020 using a mult stage cluster random sampling method. A total of 2 184 children who completed all follow ups during the primary school period from 13 elementary schools in Pudong New Area,Shanghai,with annual follow ups during 2021-2025. Testicular volume and Tanner stage of breast development were assessed by professional physicians using standardized visual inspection and palpation. The age distribution of testicular volume and breast development was fitted by using cumulative link mixed models and Turnbull s nonparametric maximum likelihood estimation method. Results: Median ages for testicular volumes of 2, 3, 4 and 5 mL in boys were 7.07, 9.24, 10.29, and 11.57 years old, respectively. Median ages for Tanner breast stages Ⅱ, Ⅲ, Ⅳ, and Ⅴ in girls were 8.55 , 10.17, 11.18, and 13.78 years old, respectively. Based on overweight and obesity, stratified analysis showed that earlier pubertal onset among overweight/obesity children, and the key milestones for pubertal initiation were testicular volume reaching 4 mL in boys and breast Tanner II in girls for 10.29, 10.83; 8.18, 9.00 years. Conclusion Overweight and obesity are associated with earlier pubertal initiation,but there are certain gender and developmental stage specific patterns.

Compared to traditional suturing, lung stapling using automatic staplers offers advantages such as smaller trauma, faster wound healing, ease of operation, and lower complication rates, making it widely used in clinical practice. However, there are significant differences in bronchial tissue thickness at different anatomical locations, and the market is flooded with various types of staplers. Currently, there is a lack of recommended stapling schemes for bronchial staplers at different anatomical locations. This article reviews the development and application of automatic staplers and summarizes some types of staplers that are currently used in clinical practice, with the aim of promoting the formation of individualized stapler selection protocols for minimally invasive thoracic surgery based on the Chinese population.

Objective:To investigate the value of application of combined ultrasound and spinal CT/MRI-assisted lumbar puncture in spinal muscular atrophy (SMA) patients with spinal deformities.Methods:Twelve SMA patients with spinal deformities were evaluated for combined ultrasound and spinal CT/MRI imaging-assisted lumbar intrathecal administration of nusinersen between November 2021 and September 2022.The degree of difficulty of lumbar puncture in SMA patients was graded according to the spinal imaging, and then different puncture methods were designed according to different puncture difficulty grades.The success rate, preparation time, operation time, the number of attempts, and complications of lumbar puncture were counted.Results:In this study, 48 lumbar punctures were performed in 12 patients with SMA, with a success rate of 100%.The average preparation time for puncture was 13.60 min, the average puncture time was 4.96 min, and the average number of attempts was 1.33. No complications such as injury to the spinal cord, nerve and viscera were found in all patients.Conclusions:Combined ultrasound and spinal CT/MRI-assisted lumbar puncture has high value when applied for SMA patients with spinal deformities.

A 62-year-old male patient received propacetamol hydrochloride for analgesia, cefuroxime sodium for anti-infection, adenosine cobalamin for nutrition of nerve, and low molecular weight heparin calcium for anticoagulation for burst fracture of the third lumbar vertebra and multiple fractures of transverse process of lumbar spine caused by traffic accident. The patient′s liver function was normal before medication. He underwent the operation under general anesthesia 2 days later. Low molecular weight heparin calcium was stopped before the operation. On day 3 after the operation (on day 5 of medication), the patient developed abdominal distension and pain. The results of laboratory tests showed alanine aminotransferase (ALT) 9 315 U/L, aspartate aminotransferase (AST) 10 760 U/L, gamma glutamyltransferase (γ-GT) 47 U/L, alkaline phosphatase (ALP) 101 U/L, total bilirubin (TBil) 71.3 μmol/L, direct bilirubin (DBil) 48.5 μmol/L, and indirect bilirubin (IBil) 22.8 μmol/L. Drug-induced liver injury was considered. Propacetamol hydrochloride was discontinued and liver-protective drugs were given. The next day, the patient developed yellow staining of his sclera and whole body skin, then followed by confusion, decreased blood oxygen saturation, low blood pressure, and hypoglycemia. The results of reexamination showed ALT 5 975 U/L, AST 3 659 U/L, γ-GT 100 U/L, ALP 141 U/L, TBil 175.2 μmol/L, DBil 101.4 μmol/L, IBil 73.8 μmol/L, and prothrombin time 21.2 s. The patient was diagnosed as acute liver failure. Cefuroxime sodium and adenosine cobalamin were discontinued and symptomatic and supportive treatments such as increasing blood pressure, fluid supplement, and correction of acidosis were given. However, the patient′s condition was not improved. He was transferred to other hospital on the same day. On the 4th day, he died of multiple organ failure.

A 62-year-old male patient received propacetamol hydrochloride for analgesia, cefuroxime sodium for anti-infection, adenosine cobalamin for nutrition of nerve, and low molecular weight heparin calcium for anticoagulation for burst fracture of the third lumbar vertebra and multiple fractures of transverse process of lumbar spine caused by traffic accident. The patient′s liver function was normal before medication. He underwent the operation under general anesthesia 2 days later. Low molecular weight heparin calcium was stopped before the operation. On day 3 after the operation (on day 5 of medication), the patient developed abdominal distension and pain. The results of laboratory tests showed alanine aminotransferase (ALT) 9 315 U/L, aspartate aminotransferase (AST) 10 760 U/L, gamma glutamyltransferase (γ-GT) 47 U/L, alkaline phosphatase (ALP) 101 U/L, total bilirubin (TBil) 71.3 μmol/L, direct bilirubin (DBil) 48.5 μmol/L, and indirect bilirubin (IBil) 22.8 μmol/L. Drug-induced liver injury was considered. Propacetamol hydrochloride was discontinued and liver-protective drugs were given. The next day, the patient developed yellow staining of his sclera and whole body skin, then followed by confusion, decreased blood oxygen saturation, low blood pressure, and hypoglycemia. The results of reexamination showed ALT 5 975 U/L, AST 3 659 U/L, γ-GT 100 U/L, ALP 141 U/L, TBil 175.2 μmol/L, DBil 101.4 μmol/L, IBil 73.8 μmol/L, and prothrombin time 21.2 s. The patient was diagnosed as acute liver failure. Cefuroxime sodium and adenosine cobalamin were discontinued and symptomatic and supportive treatments such as increasing blood pressure, fluid supplement, and correction of acidosis were given. However, the patient′s condition was not improved. He was transferred to other hospital on the same day. On the 4th day, he died of multiple organ failure.

Objective To investigate the value of endorectal ultrasonography (ERUS) and MRI examination in the preoperative evaluation of T staging and circumferential resection margin (CRM) of rectal cancer.Methods The retrospective cross-sectional study was conducted.The clinicopathological data of 193 patients [122 males and 71 females,age (60± 12)years with the range of 26-90 years] who underwent radical resection of rectal cancer at the First Hospital of Jilin University from May 2016 to January 2018 were collected.All patients underwent ERUS and MRI examination before surgery,total mesorectal excision during surgery and postoperative pathological examination.Postoperative pathological results as the gold standard,the sensitivity,specificity in T staging and the CRM diagnostic coincidence rate of rectal carcinoma by ERUS and MRI examination are evaluated.Observation indicators:(1) evaluation of T staging of rectal cancer by ERUS and MRI examination;(2) evaluation of CRM in rectal cancer by ERUS and MRI examination.Measurement data with normal distribution were represented as Mean±SD.Sensitivity,specificity and coincidence rate were calculated by chi-square test of paired fourfold table.McNemar test was used to compare the coincidence rate of T staging between ERUS and MRI examination.Consistency between CRM measurement by ERUS examination and pathological examination of rectal cancer was conducted by Kappa analysis.Fisher exact probability test was used to compare the coincidence rate of positive CRM between ERUS and MRI examination.Results (1) Evaluation of T staging of rectal cancer by ERUS and MRI examination.The overall coincidence rate of T staging of rectal cancer and coincidence rates of T1,T2,T3,T4 staging by ERUS examination were 74.61％ (144/193),93.78％ (181/193),80.83％ (156/193),79.79％ (154/193) and 94.82％ (183/193),respectively.The sensitivity ofT1,T2,T3 and T4 staging was 55.56％ (10/18),77.50％ (31/40),78.46％ (102/130),20.00％ (1/5),and the specificity was 97.71％ (171/175),81.70％ (125/153),82.54％ (52/63),96.81％ (182/188),respectively.The overall coincidence rate of T staging of rectal cancer and coincidence rates of T1,T2,T3,T4 staging by MRI examination were 50.78％ (98/193),90.67％ (175/193),74.09％ (143/193),58.55％ (113/193) and 78.24％ (151/193),respectively.The sensitivity of T1,T2,T3 and T4 staging was 0 (0/18),17.50％ (7/40),68.46％ (89/130),40.00％ (2/5),and the specificity was 100.00％ (175/175),88.89％ (136/153),38.10％ (24/63),79.26％ (149/188),respectively.There was statistically significant difference between the overall coincidence rate of ERUS and MRI examination for T staging of rectal cancer (x2 =8.631,P＜0.05).(2) Evaluation of CRM in rectal cancer by ERUS and MRI examination.The sensitivity and specificity of positive CRM evaluation of rectal cancer by ERUS examination were 100.00％ (5/5) and 97.34％ (183/188) respectively,and the coincidence rate with results of pathological examination was 97.41％ (188/193),showing a high consistency between positive CRM evaluation of rectal cancer by ERUS examination and pathological examination (Kappa value =0.655,P ＜ 0.05).The sensitivity and specificity of positive CRM evaluation of rectal cancer by MRI examination were 40.00％ (2/5) and 92.02％ (173/188),and the coincidence rate with pathological examination was 90.67％ (175/193),respectively,showing a high consistency between positive CRM evaluation of rectal cancer by MRI and pathological examination (Kappa value =0.206,P＜0.05).There were statistically significant differences in the diagnostic coincidence rate and specificity of CRM positive evaluation for rectal cancer between ERUS and MRI examination (x2 =5.896,P＜0.05).Conclusion ERUS examination has a high coincidence rate in the preoperative T staging of rectal cancer and a high consistency between positive CRM evaluation of rectal cancer with pathological examination,which are superior to MRI examination in the two aspects.

Objective To compare the outcomes of patients with non-variceal upper gastrointestinal bleeding (NVUGIB) taking aspirin for primary prophylaxis to those not taking it.Methods Patients without any vascular disease (coronary artery or cerebrovascular disease) who were admitted to the 89th Hospital of PLA between 2006 and 2016 with non-variceal upper gastrointestinal bleeding were included.The frequencies of in-hospital mortality,re-bleeding,severe bleeding,need for surgery or embolization,and of a composite outcome of the 4 bleeding related adverse outcomes were compared between patients receiving aspirin and those on no antithrombotics.We also compared the frequency of in hospital complications and length of hospital stay between the two groups.Results Of the 179 eligible patients,47 were on aspirin and 132 patients were on no antithrombotics (control group).Patients in the aspirin group (58.4 years) were elder than that in controls (66.8 years) (P ＜0.01).Patients in the aspirin group had significantly more co-morbidities,including diabetes mellitus [25.5 ％ (12/47) vs 12.1％ (16/132)] and hypertension [46.8％ (22/47) vs 28.0％ (37/132)],respectively,as well as dyslipidemia [21.3％ (10/47) vs 6.1％ (8/132)] (P ＜ 0.01).Smoking was more frequent in the aspirin group [36.2％ (17/47) vs 22.7％ (30/132),P ＜ 0.05].The frequencies of endoscopic therapy and surgery were similar in both groups,while the frequencies of in-hospital complications and re-bleeding were similar in the two groups,too.However,the patients who were on aspirin had lower in hospital mortality rates (2.1％ vs 13.6％,P ＜0.01),shorter hospital stay (4.9 d vs 7.0 d,P ＜0.05),and fewer composite outcomes (10.6％ vs 24.2％,P ＜ 0.05).Conclusions Patients who present with NVUGIB while receiving aspirin for primary prophylaxis had fewer adverse outcomes.Thus aspirin may have a protective effect beyond its cardiovascular benefits.

Objective To monitor and compare the breathing mechanics on PC,VC and PRVC during pneumoperitoneum,and to discuss the significance of the clinic use of PRVC.Method Ninety laparoscopic cholecystectomy patients were equally divided into 3 groups (PC,VC,PRVC).Levels of PES,PAWM,PAP,PaCO2,ETCO2,TV MAP and HR were detected before pneumoperitoneum,and at 5,10,15 and 20 minutes postpneumoperitoneum.Results Pneumoperitoneum made three respiratory patterns with different levels of PAWM,PAP,and PES.PES post-pneumoperitoneum in the VC model was obviously higher than that in the PC and PRVC group.At 10 min post-pneumoperitoneum,levels of PaCO2 and ETCO2 increased obviously in the PC and VC group(P ＜ 0.05).Levels of PaCO2 and ETCO2 were increased in the PC group,but TV level post-pneumoperitoneum was significantly lower than that in the other two groups (P ＜ 0.05).Level of PaCO2 and ETCO2 were increased in the PC and VC group post-pneumoperitoneum,along with increases of MAP and HR (P ＜ 0.05).Levels of MAP and HR in the PRVC group post-pneumoperitoneum were significantly lower than those in the PC and VC group (P ＜ 0.05).Conclusion PRVC mode can effectively reduce the increases of pneumoperitoneum-induced PAWM,PAP,PES,without the unusual increase of PaCO2 and ETCO2 during surgeries,contributing to the stability of vital signs of perioperative patients.

Objective To observe the effects of modifiedDanshen Decoction on spermidine/spermine acetyltransferase (SSAT) /polyamine pathways of SD rats with IRI; To investigate its protective mechanism. Methods The model of IRI was established by ligating left anterior descending coronary artery for 30 min followed by reperfusion for 90 min. The SD rats were randomly divided into the control group, sham-operation group, model group and modifiedDanshen Decoction group, with 10 rats in each group. The myocardial infarction size was measured by using TTC staining. The contents of SSAT were measured by ELISA. The SSAT mRNA and SSAT protein expression level were detected with real-time fluorescent quantitative PCR method and Western blot, respectively. The contents of polyamines (putrescine, spermidine, spermine) in cardiac tissue were detected by HPLC. Results Compared with sham-operation group, the myocardial infarction size, the SSAT content, the SSAT mRNA and SSAT protein expression levels of model group increased significantly, the contents of polyamines decreased significantly, with statistical significance (P<0.01); Compared with model group, the myocardial infarction size of modifiedDanshen Decoction group was significantly reduced, while the SSAT content and SSAT mRNA and protein expression level decreased significantly, the contents of polyamines increased, with statistical significance (P<0.05, P<0.01).ConclusionModifiedDanshen Decoction can adjust the SSAT polyamine pathways and increase polyamine content in cardiomyocytes, and thus play a role of protection of myocardial ischemia-reperfusion injury.