Objective To analyze the effect of releasing the lower pulmonary ligament on right residual lung expansion after right upper lobe resection under different body mass index (BMI) levels. Methods The clinical data of patients who underwent thoracoscopic right upper lobe resection in the First Affiliated Hospital with Nanjing Medical University from 2021 to 2022 were retrospectively analyzed. Patients were divided into a group A (17 kg/m2＜BMI≤23 kg/m2), a group B (23 kg/m2＜BMI≤29 kg/m2) and a group C (BMI＞29 kg/m2) according to BMI. The presence of residual cavity was judged by chest X-ray at 7-10 days after operation, the degree of compensation change of the right main bronchus angle was measured, and the changes in lung volume were determined by CT three-dimensional reconstruction. Results A total of 157 patients who underwent thoracoscopic right upper lobe resection were included, including 71 males and 86 females, with an average age of (59.7±11.2) years. There were 50 patients in the group A, 75 patients in the group B, and 32 patients in the group C. In the group A, compared with those without releasing the lower pulmonary ligament, patients with releasing had a lower incidence of postoperative residual cavity (P=0.016), greater changes in bronchus angle (P<0.001), and smaller changes in lung volume (P<0.001). In the group B and C, there was no significant effect of releasing the lower pulmonary ligament on postoperative residual cavity, bronchus angle, and lung volume changes (P>0.05). Conclusion For patients with thin and long body shape and low BMI, releasing the lower pulmonary ligament is helpful to promote the expansion of the residual lung after right upper lobe resection and reduce the occurrence of postoperative residual cavity in patients.

[摘 要] 目的：探讨异位表达血红蛋白亚基（HBA/HBB）对缺氧条件下嵌合抗原受体T细胞（CAR-T细胞）功能障碍的改善作用及其对肿瘤细胞的杀伤效应。方法：全基因合成技术合成靶向HER2的CAR序列，构建共表达HBA或HBB的CAR慢病毒载体，包装慢病毒后感染人原代T淋巴细胞，制备异位表达HBA/HBB的CAR-T细胞，命名为HBA CAR-T和HBB CAR-T。采用缺氧探针检测小鼠实体瘤缺氧状态。通过流式细胞术检测瘤内CAR-T细胞占比、异位表达血红蛋白亚基的CAR-T细胞阳性率及CAR-T细胞的活性氧、凋亡水平。WB法检测HBA CAR-T和HBB CAR-T内相关血红蛋白亚基表达情况，采用细胞计数板计数检测细胞增殖水平，通过萤光素酶报告基因法检测CAR-T细胞对肿瘤细胞的杀伤能力，qPCR检测CAR-T细胞中缺氧诱导因子-1α（HIF-1α）表达水平，利用MitoXpress Intra试剂盒检测CAR-T细胞内氧气含量。结果：不同细胞构建的实体瘤模型均存在明显缺氧情况，且CAR-T细胞浸润水平与缺氧程度呈显著负相关（P < 0.000 1）。HBA CAR-T与HBB CAR-T构建成功（阳性率 > 60%），相应血红蛋白亚基可稳定表达。缺氧环境下HBA CAR-T和HBB CAR-T的ROS水平、凋亡水平显著下降，增殖、对肿瘤细胞的体外杀伤能力显著强于传统CAR-T细胞（均P < 0.05）。HBA CAR-T与HBB CAR-T内HIF-1α表达降低（均P < 0.001），且缺氧程度显著降低（均P < 0.001）。结论：异位表达血红蛋白亚基可改善缺氧条件下CAR-T细胞功能障碍并增强其对肿瘤细胞的体外杀伤作用。

Objective To gain insights into the biological characteristics of different populations of Culex tritaeniorhynchus within and around the Yellow Sea wetland from the perspective of the occurrence of resistance, we investigated the levels of resistance to deltamethrin and kdr gene mutation in the wetland and its peripheral areas. Methods Specimens were collected from Cx. tritaeniorhynchus populations at two monitoring sites in the Rare Bird National Nature Reserve and Tiaozi Ni Wetland Scenic Area, and also from two populations in Yancheng City and the Liuhe District of Nanjing, and the resistance of these mosquitoes to deltamethrin was determined using the CDC biotest bottle method. For each concentration of deltamethrin assessed, a random subset of exposed specimens was selected for amplification of the kdr gene fragment, followed by Sanger sequencing to identify and analyze resistance-associated mutations. Results The LC50 levels of deltamethrin among mosquitoes from the four populations in Luhe, Yancheng, the Rare Bird National Nature Reserve and the Tiaozi Ni Wetland Scenic Area were 2.048 5, 7.798 2, 3.473 3, and 17.695 5 mg/mL, respectively, with corresponding concentrations of deltamethrin ranging from 0.005 to 5.000,0.050 to 50.000,0.050 to 25.000 and 0.050 to 50.000 mg/mL, respectively. Furthermore, the ranges of the KT50 values were 11.76-107.43, 67.05-216.30,29.77-107.43 and 28.40-329.51 min; the 1-h knockdown rates were 34.58%-99.15%, 9.52%-43.80%, 55.09%-73.01%, and 10.09%-68.07%; and the 24-h mortality rates were 12.15%-67.52%,9.52%-79.56%,13.17%-82.21%, and 11.01%-78.99%, respectively. With respect to kdr gene mutation, we assayed a total of 63,70,59, and 57 mosquitoes for the four populations, for which we detected L1014F mutation frequencies of 14.29%, 35.00%, 20.34%, and 31.58%, respectively, with a majority of these mutations being heterozygous for resistance. In addition, five adult mosquitoes were identified has having synonymous mutations at site 1011[i. e. , AAT(asparagine)mutation to AAC(asparagine)]. Conclusions Our findings revealed the clear resistance of Cx. tritaeniorhynchus to deltamethrin in the Yancheng region of the Yellow Sea wetland, and the resistance phenotype and kdr frequency of Cx. tritaeniorhynchus in the wetland environment were comparable to those of Cx. tritaeniorhynchus in the wetland environment, thereby indicating that the resistance of different populations of Cx. tritaeniorhynchus was homogeneous under the pressure of different insecticide selection within and around the wetland. However, the underlying mechanisms need to be further studied.

Objective:To determine the clinical issues in the Clinical practice guidelines for postoperative pain management in adults (2024 edition). Methods:A preliminary list of clinical issues for the guidelines was developed through literature review, clinical surveys, and expert interviews. This was followed by two rounds of Delphi questionnaire surveys, with quality control and statistical analysis conducted using expert positive coefficient, mean item scores, full score ratio, coefficient of variation, Cronbach′s α coefficient, and expert authority level to finalize the list of clinical issues.Results:The experts participating in the Delphi questionnaire surveys had multidisciplinary collaborative backgrounds and regional representativeness, with a high level of authority. The overall positive coefficient of expert participation in the surveys was 78.9%. Through two rounds of the Delphi method and based on the screening criteria of a mean score ≥3.5, coefficient of variation ≤30%, and full score ratio ≥30%, 17 clinical issues were ultimately included following an expert consensus meeting.Conclusions:Through the Delphi method and rigorous quality control, the clinical issues in the Clinical practice guidelines for postoperative pain management in adults (2024 edition) are determined, laying a foundation for the subsequent development of the guidelines.

Objective:To evaluate the association between body temperature and duration of mechanical ventilation in the intensive care unit (ICU) among patients after coronary artery bypass grafting (CABG).Methods:Clinical data from patients, aged >18 yr, undergoing primary isolated CABG, between 2008 and 2019, were extracted from the Medical Information Mart for Intensive Care Ⅳ version 2.0 database. Participants were stratified into 3 groups based on the mean body temperature in ICU: hypothermia group (<36.0 ℃), normothermia group (36.0 ℃ ≤ temperature <37.3 ℃), and hyperthermia group (≥37.3 ℃). Multivariable linear regression and linear curve fitting were performed to assess the association between body temperature and duration of mechanical ventilation.Results:A total of 4, 588 patients were finally included in the statistical analysis, including 133 cases in hypothermia group, 4, 177 cases in normothermia group and 278 cases in hyperthermia group. The duration of mechanical ventilation was significantly prolonged in both hypothermia and hyperthermia groups compared with normothermia group ( P<0.05). The results of multivariable linear regression demonstrated that each 1 ℃ increase in body temperature was associated with a 2.43 h reduction in the duration of mechanical ventilation in hypothermia group ( P<0.001), and each 1 ℃ temperature elevation corresponded to a non-significant reduction of 0.12 h in hyperthermia group ( P=0.851). The results of linear curve fitting revealed a U-shaped relationship between body temperature and duration of mechanical ventilation, and an inflection point was identified at 36.71 ℃, with duration of mechanical ventilation prolonged with temperatures either below or above this threshold ( P<0.05). Conclusions:Hypothermia during ICU stay following CABG may lead to prolonged mechanical ventilation in patients.

Objective:To evaluate the efficacy and safety of rivaroxaban and investigate the clinical features of Mycoplasma pneumoniae pneumonia (MPP) associated with pulmonary thromboembolism (PTE) in children. Methods:A case series study was conducted on 36 children, diagnosed with MPP associated with PTE and hospitalized in our institution from January 2020 to June 2024 of Department of Pediatric Respiratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University. Clinical data and follow-up information were collected to analyze their clinical characteristics, outcomes, and adverse events to rivaroxaban. Comparison of coagulation indices before and after treatment with rivaroxaban using the Mann-Whitney rank sum test.Results:Among the 36 children, there were 27 males and 9 females, and the age of onset was (7.8±2.8) years. PTE was diagnosed (17±6) days after the onset of MPP. Thirty-four cases (94%) were classified as low-risk PTE, and 13 cases (36%) had thromboembolism of multiple anatomic sites. All patients presented with cough and fever, manifesting as shortness of breath in 33 cases (92%), chest pain in 12 case (33%), hemoptysis in 6 case (17%) and dyspnea in 5 cases (14%). Pulmonary artery involvement was demonstrated by CT pulmonary angiography in all 36 children. The D-dimer level was 5.1 (4.2, 12.2) mg/L. D-dimer levels were 5.1 (4.2, 12.2) mg/L, of which 29 cases (81%) were ≥4.0 mg/L. The total duration of anticoagulation 3.1 (2.5, 4.2) months. All children received rivaroxaban for 2.7 (2.2, 3.8) months. Of the 36 children, 35 cases were followed up after 3 months of anticoagulant therapy, and 30 cases (83%) showed pulmonary artery thrombus absorption. Finally, follow-up outcome data were available for 34 cases, of which 33 showed complete resolution of thrombus in the affected areas, and 1 showed partial resolution. There were no cases of death, thrombus recurrence or progression, major bleeding events occurred or chronic thromboembolic pulmonary hypertension. Adverse events included hemoptysis in 2 cases and elevated liver enzymes in 4 cases. After the treatment of rivaroxaban, the levels of D-dimer were decreased compared with those before the treatment of PTE (0.3 (0.2, 0.5) vs. 5.1 (4.2, 12.2) mg/L, Z=-7.12, P<0.05), and the levels of prothrombin time levels were significantly longer compared with those before the treatment of PTE (3.6 (12.4, 14.9) vs. 13.0 (11.8, 13.6) s, Z=2.34, P<0.05). Conclusions:During the course of MPP, the emergence of clinical symptoms such as short of breath, chest pain, hemoptysis, dyspnea or along with elevated D-dimer levels, should raise suspicion for the occurrence of PTE. Rivaroxaban has shown good efficacy and a favorable safety profile.

Objective:To investigate the clinical manifestations, therapeutic strategies and prognostic outcomes in pediatric patients with severe Mycoplasma pneumoniae pneumonia (SMPP) complicated by cardiac thrombosis. Methods:This case series study retrospectively analyzed 15 pediatric patients with SMPP complicated by cardiac thrombosis. The patients was recruited from the Department of Pediatric Respiratory Medicine at Shandong Provincial Hospital Affiliated to Shandong First Medical University between July 2018 and January 2025. Comprehensive clinical data and follow-up information were collected.Results:Among the 15 children, 10 were male and 5 were female, and the age of onset was 8.0 (6.3, 10.0) years. All 15 children presented with fever and cough, while additional symptoms included dyspnea in 7 cases, chest pain in 6 cases, hemoptysis in 3 cases, and chest tightness in 1 case. The white blood cell count was 11.7 (9.5, 15.9)×10 9/L, C-reactive protein was 31.6 (17.5, 64.8) mg/L and lactate dehydrogenase was 548.2 (410.4, 768.3) U/L. A total of 14 children underwent testing for the Mycoplasma pneumoniae drug resistance genes 2063A>G and 2064A>G, of which 13 tested positive. The plasma D-dimer levels of 15 children were 8.77 (7.23, 12.50) mg/L, all of which were higher than normal. Among the 15 children, 5 had decreased activity of anticoagulant proteins (protein C, protein S, antithrombin Ⅲ), and 8 tested positive for antiphospholipid antibodies. Chest CT scans of all 15 children showed pulmonary consolidation and (or) atelectasis, with pleural effusion present in 12 cases. In the 15 children, thrombosis was detected at 14.0 (11.0, 18.0) days after the onset of illness. The locations of cardiac thrombosis included the right ventricle in 9 cases, the right atrium in 5 cases, and the left atrium in 1 case. Additionally, 10 cases had pulmonary vascular embolism, comprising 9 cases of pulmonary artery thrombosis and 1 case of pulmonary vein thrombosis. After anticoagulant treatment, cardiac thrombi disappeared in 10 children. Five children who did not show improvement with anticoagulation underwent surgical thrombectomy. In the follow-up of 15 children, lung imaging basically returned to normal, with no major hemorrhagic events or other adverse events. Conclusions:In children with Mycoplasma pneumoniae pneumonia, the presence of clinical symptoms such as shortness of breath, chest pain and hemoptysis, along with elevated plasma D-dimer levels, should raise suspicion for the possibility of cardiac thrombosis. SMPP complicated by cardiac thrombosis, prognosis is good following anticoagulation or surgical treatment.

Objective:To investigate the prevalence and risk factors of overweight and obesity among Chinese children aged 3-18 years from 11 provinces, antonomous regions, or municipalities.Methods:This national cross-sectional community health survey utilized a multistage stratified cluster-random sampling method to recruit 193 997 nationally representative participants from 11 provinces, autonomous regions, or municipalities between January 2017 and December 2019. All participants underwent physical examinations, and their caregivers completed questionnaires assessing participants′ dietary, lifestyle, familial, and perinatal information. Multilevel multinomial logistic regression models were employed to identify the potential risk factors.Results:The cohort comprised 193 997 children (102 178 boys, 91 819 girls),aged (10±4) years. Overall prevalence rates were 30 574(15.8%)overweight children and 17 217(8.9%) obesity children. Boys exhibited higher overweight and obesity rates than girls (17.0% (17 368/102 178) vs. 14.4% (13 206/102 178), 11.3% (11 553/91 819) vs. 6.2% (5 664/91 819), χ2=249.12,1 578.69,both P<0.001). The detection rates of obesity in Tanner stage 2 and 3 were the highest in boys and girls, with 13.4%(2 231/16 665) and 8.6%(880/10 221) respectively. Risk factors for obesity included parental overweight (paternal OR=2.34 and maternal OR=2.29), annual household income of 100 000-200 000 yuan (compared with<100 000 yuan, OR=1.04), higher paternal education (compared with below high school,high school and a college education OR=1.09,1.14), birth weight >4.0 kg (≤5 and>5 years old OR=1.74, 1.44,respectively), and western food consumption≥1 time/month (compared with<1, 1-2, 3-4,>4 times/month OR=1.36, 1.30, 1.67(≤5 years), 1.19, 1.16, 1.15 (>5 years), respectively) (all P<0.05). Conversely, coarse grain intake≥1 times/week (compared with<1 times/week, every day, 3-4, 1-2 times/week OR=0.74, 0.80, 0.71 (≤5 years), 0.75, 0.87, 0.90(>5 years), respectively, all P<0.05) was associated with reduced obesity risk. Conclusions:Obesity epidemiology in children demonstrates significant heterogeneity across age, gender, geographic regions, and pubertal stages. It is necessary to establish a personalized prevention and control strategy.

Objective:To explore the clinical efficacy of staged reconstruction with anterolateral thigh flap (ALTF) for wrist-forearm soft tissue defects of electrical burns.Methods:A retrospective observational study was conducted on 10 patients who had wrist-forearm soft tissue defects after electrical burns and were admitted in the Department of Burns, Zhengzhou First People's Hospital from January 2019 to December 2022. The patients were 6 males and 4 females, aged 8 to 64 years. All the patients were third-and-fourth degree electrical burns. Debridement was performed to remove the necrotic tissues around the wound in stage I surgery. Area of the wound after debridement ranged from 15 cm×11 cm to 31 cm×20 cm. According to the condition of wrist-forearm injury, the wounds with relatively mild injury were retained. Free ALTF was used to cover the wound surface. Size of the flaps ranged from 16 cm×12 cm to 32 cm×21 cm. The descending branch of lateral circumflex femoral artery and the accompanying veins carried by the flap were anastomosed end-to-end with the radial artery and vein or ulnar artery and vein in the recipient site, respectively. Conditions of other vessels were explored. The great saphenous veins in a length of 10-18 cm was used to bridge the occluded arteries. The donor sites were covered by medium thick skin grafts from trunk. After survival of the flap, stage Ⅱ surgery was carried out to debride the wound temporarily retained in stage I surgery and to thin the flap, then had all the wound covered with the thinned flap. Follow-ups were conducted at outpatient clinic, and via telephone and WeChat interviews. The limb salvage, flap survival, vascular compromise and other complications, as well as the donor site healing were observed. The wound coverage rate of the thinned flap. The appearance of flap, donor site scar hyperplasia, the patient satisfaction with the shape and function of the donor site at 6 months after the stage Ⅱ surgery were evaluated. Likert scale was employed to evaluate the patient satisfaction. The Michigan Hand Outcomes Questionnaire (MHQ) and Disabilities of the Arm, Shoulder and Hand (DASH) were used to evaluate the upper limb function in daily life of the patients.Results:The limb salvages in the 10 patients were all successful, and the flaps survived without any postoperative event of vascular compromise or other complication. One patient had mild cyanosis at the edges of flap after surgery and regressed at 7 days later. One flap had poor blood circulation and partial necrosis. The thinned flaps covered the wound completely after the stage-Ⅱ flap thinning surgery. The postoperative follow-up period was 6.0-7.0 months. All skin grafts in the donor sites survived well. The thinned flaps of stage Ⅱ surgery achieved 100% in wound coverage rate. At 6 months after surgery, the colour and texture of the flaps were about the same as those of the normal skin of the upper limb. There were linear scars in both of donor and recipient sites. Four patients were satisfactory to the postoperative appearance and function of the donor site and 6 patients were very satisfactory. MHQ scores were 49-82 (mean, 74) points; DASH scores were 27-45 (mean, 32) points.Conclusion:Reconstruction of the wounds in wrist-forearm soft tissue defects of electrical burns with ALTF in staged surgery, can improve the function and aesthetics of the wrist-forearm. It is a good method.

Body weight abnormalities, including overweight, obesity, and underweight, have become a dual public health challenge in Chinese adults: overweight and obesity lead to a variety of chronic complications, while underweight increases the risks of malnutrition, sarcopenia, and organ dysfunction. To systematically address these issues, multidisciplinary experts in endocrinology, sports science, nutrition, and psychiatry from various regions have held multiple weight management seminars. Based on the latest epidemiological data and clinical evidence, they expanded the guideline to include assessment and intervention strategies for underweight, in addition to the core content of obesity management. This guideline outlines the etiological mechanisms, evaluation methods, and multidimensional management strategies for overweight and obesity, covering key areas such as diagnosis and assessment, medical nutrition therapy, exercise prescription, pharmacological intervention, and psychological support. It is intended to provide a scientific and standardized approach to weight management across the adult population, aiming to curb the rising prevalence of obesity, mitigate complications associated with abnormal body weight, and improve nutritional status and overall quality of life.