The inappropriate utilisation of the agricultural insecticide lambda-cyhalothrin (LCT) has the potential to result in residues that compromise food safety and human health. Respiratory exposure represents a major route of LCT contact in humans. Nevertheless, its deleterious effects on the respiratory system remain inadequately characterized. It is imperative to elucidate the potential relationship and mechanisms by which lung cancer, a significant malignant neoplasm of the respiratory system, is associated with exposure to LCT. The objective of this study is to utilise bioinformatics methodologies to screen and analyse the key target molecules affected by LCT in the occurrence of lung cancer, and their mechanisms of action. Specifically, network toxicology methods were employed to identify core targets of LCT-induced lung cancer. Subsequently, functional annotation to delineate associated cellular pathways, and finally, molecular docking to simulate binding modes between LCT and shared core targets. Core target screening identified 50 targets for large cell lung cancer, 54 for small cell lung cancer, 29 for lung squamous cell carcinoma, and 28 for lung adenocarcinoma, with EGFR, HSP90AA1, JUN, CCL2, MYC, CXCL8, and HSPA4 shared in all subtypes. Functional annotation revealed that LCT-triggered oncogenic pathways predominantly involved ubiquitination, chemotaxis, and tumor immune signaling. Molecular docking demonstrated spontaneous binding of LCT to core targets mediated by hydrogen bonds and π-cation interactions. These results establish a theoretical framework for evaluating LCT-associated risks of lung cancer and respiratory system damage.
Lung Neoplasms/metabolism* ; Pyrethrins/toxicity* ; Humans ; Insecticides/toxicity* ; Nitriles/toxicity* ; Molecular Docking Simulation

Objective To compare the early outcomes of domestic third-generation magnetically levitated left ventricular assist device (LVAD) with or without concomitant mitral valvuloplasty (MVP). Methods The clinical data of 17 end-stage heart failure patients who underwent LVAD implantation combined with preoperative moderate to severe mitral regurgitation in Fuwai Central China Cardiovascular Hospital from May 2018 to March 2023 were retrospectively analyzed. The patients were divided into a LVAD group and a LVAD+MVP group based on whether MVP was performed simultaneously, and early outcomes were compared between the two groups. Results There were 4 patients in the LVAD group, all males, aged (43.5±5.9) years, and 13 patients in the LVAD+MVP group, including 10 males and 3 females, aged (46.8±16.7) years. All the patients were successful in concomitant MVP without mitral reguragitation occurrence. Compared with the LVAD group, the LVAD+MVP group had a lower pulmonary artery systolic pressure and pulmonary artery mean pressure 72 h after operation, but the difference was not statistically different (P>0.05). Pulmonary artery systolic pressure was significantly lower 1 week after operation, as well as pulmonary artery systolic blood pressure and pulmonary artery mean pressure at 1 month after operation (P<0.01). There was no statistically significant difference in blood loss, operation time, cardiopulmonary bypass time, aortic cross-clamping time, mechanical ventilation time, or ICU stay time between the two groups (P>0.05). The differences in 1-month postoperative mortality, acute kidney injury, reoperation, gastrointestinal bleeding, and thrombosis and other complications between the two groups were not statistically significant (P>0.05). Conclusion Concomitant MVP with implantation of domestic third-generation magnetically levitated LVAD is safe and feasible, and concomitant MVP may improve postoperative hemodynamics without significantly increasing perioperative mortality and complication rates.

Objective:To construct and purify four respiratory syncytial virus (RSV) PreF proteins through gene sequence design and optimization and evaluate their immunogenicity.Methods:Coronin-1A and T4 trimer protein gene sequences were optimized with Human and CHO codons, and then added to RSV F protein sequence. The above plasmids were transfected into Expi293F cells for protein expression. After purification by nickel column, four trimer proteins were prepared. SDS-PAGE and Western blot were performed for protein identification. BALB/c mice were immunized at week 0 and week 3, and blood samples were collected to measure the activities of binding and neutralizing antibodies in serum.Results:SDS-PAGE and Western blot showed that the four proteins had stable trimer structure. Antigen-antibody affinity test showed that the four trimer proteins had strong affinity with RSV-specific monoclonal antibodies 8897, D25, Motavizumab, AM14 and Palivizumab. The titers of antibodies induced by the two T4 trimers were higher after the initial immunization, while there was a substantial increase in the titers of antibodies induced by Human codon-optimized trimer protein after the second immunization.Conclusions:PreF trimer protein can be prepared by adding any of the two different heterotrimer motifs, and induce effective binding and neutralizing antibodies in mice.

Objectives:To investigate the safety and efficacy of concomitant mitral valvuloplasty(MVP)and implantation of domestic third-generation magnetically levitated Corheart 6 left ventricular assist device(LVAD). Methods:Clinical data of 13 end-stage heart failure patients who underwent Corheart 6 LVAD implantation and MVP at Central China Fuwai Hospital of Zhengzhou University from October 2021 to March 2023 were retrospectively analyzed.Mortality and complication events during hospitalization and at follow-up were collected,and changes in myocardial injury biomarkers,renal function,hemodynamics,and echocardiographic indices were observed. Results:There were no perioperative deaths and no MVP-related complications in these patients.During a mean follow-up of(14.2±5.6)months,2 patients died due to COVID-19 pneumonia and cardiac arrest respectively,11 cases(84.6%)survived.There were no recurrences of moderate-to-severe mitral regurgitation in the survived patients.Compared with preoperative value,higher cardiac output,lower central venous pressure,pulmonary artery systolic pressure(PASP),and mean pulmonary artery pressure(PAMP)were evidenced at 24 h and 72 h postoperatively,estimated glomerular filtration rate was also reduced at 1 week post operation(all P<0.010).High-sensitive troponin T level was significantly increased at 1 week post operation and then reduced at 1 month post operation,but still not returned to pre-operative level([125.5±281.9]pg/ml at baseline,[1 295.6±654.6]pg/ml at 1 week post operation and[278.0±300.5]pg/ml at 1 month post operation).Echocardiography showed that compared with preoperative period,the left ventricular ejection fraction tended to be higher at 1 and 6 months postoperatively(both P>0.017),whereas left ventricular end-diastolic dimension,PASP,and PAMP were significantly reduced(all P<0.010). Conclusions:Domestic third-generation magnetically levitated Corheart 6 LVAD implantation with concomitant MVP is safe and feasible,there is no recurrence of moderate-to-severe mitral regurgitation,a significant reduction in pulmonary artery pressure,and significant hemodynamic improvement in early to mid-term postoperatively are observed in survived patients.

Objective:To investigate the clinical efficacy of neuroendoscopic hematoma removal versus soft channel drainage in the treatment of chronic subdural hematoma. Methods:The clinical data of 102 patients with chronic subdural hematoma who received treatment in Jincheng People's Hospital from May 2018 to May 2020 were retrospectively analyzed. They were divided into the neuroendoscopy group ( n = 50) and the soft channel group ( n = 52) according to different surgical methods. Perioperative indexes, hematoma clearance rate, China Stroke Scale score, the activity of daily living score, and oxidative stress indexes were compared between the two groups. All patients were followed up for 3 months. The incidence of complications during the follow-up period was calculated. Results:The retention time of the drainage tube in the neuroendoscopy group was shorter than that in the soft channel group [(2.45 ± 0.63) days vs. (3.30 ± 0.78) days, t = 6.06, P < 0.001]. The length of hospital stay in the neuroendoscopy group was shorter than that in the soft channel group [(7.14 ± 1.65) days vs. (9.07 ± 2.11) days, t = 5.15, P < 0.001]. The hematoma clearance rate at postoperative 7 days in the neuroendoscopy group was higher than that in the soft channel group [(93.45 ± 5.50)% vs. (81.86 ± 7.24)%, χ2 = 9.12, P < 0.001]. There were no significant differences in operation time and intraoperative blood loss between the two groups (both P > 0.05). At postoperative 30 days, the China Stroke Scale score in the neuroendoscopy group was lower than that in the soft channel group [(12.74 ± 2.23) points vs. (18.67 ± 2.45) points, t = 12.79, P < 0.001]. The activity of daily life score in the neuroendoscopy group was significantly higher than that in the soft channel group [(77.69 ± 7.11) points vs. (91.35 ± 7.25) points, t = 9.60, P < 0.001]. At postoperative 7 days, glutathione peroxidase level in the neuroendoscopy group was significantly lower than that in the soft channel group [(130.75 ± 13.66) U/L vs. (148.60 ± 14.64) U/L, t = 6.37, P < 0.001]. Malondialdehyde level in the neuroendoscopy group was significantly lower than that in the soft channel group [(5.11 ± 0.65) nmol/L vs. (6.19 ± 0.74) nmol/L, t = 7.83, P < 0.001]. Superoxide dismutase level in the neuroendoscopy group was significantly higher than that in the soft channel group [(275.60 ± 22.33) U/L vs. (254.60 ± 18.55) U/L, t = 5.15, P < 0.001]. There was no significant difference in the incidence of complications between the two groups ( P > 0.05). Conclusion:Compared with soft channel drainage, neuroendoscopic hematoma removal can obtain better short-term curative effects and less oxidative stress response in the treatment of chronic subdural hematoma. Neuroendoscopic hematoma removal does not increase the incidence of postoperative complications and is highly safe.

Objective:To investigate the effects of over-expression of E2F transcription factor 1 (E2F1) on proliferation, invasion, apoptosis and radiosensitivity of glioma cell U251.Methods:Real-time quantitative PCR (qRT-PCR) were used to detect the differential expression of E2F1 mRNA in glioma cells LN18, SW1088, U251 and normal brain glial cells. The stable over-expression of E2F1 plasmid was constructed and transfected into U251 cells. qRT-PCR and Western blot test were used to detect the expression of E2F1, pituitary tumor transforming gene 1(PTTG1), C-Myc, B-cell lymphoma-2 (Bcl-2), Bcl2-associated X (Bax) mRNA and protein expression in the control group and E2F1 over-expression group.U251 cells were divided into control group(no X-ray irradiation), irradiation group(6 Gy dose of X-ray), and irradiation + E2F1 over-expression group(transfected with E2F1 first, then irradiated by 6 Gy of X-ray). Cell proliferation ability was detected by cell counting Kit-8(CCK-8) cell viability detection reagent, and cell invasion and migration ability were detected by Transwell chamber. Apoptosis and cell cycle were detected by flow cytometry.GraphPad Prism 8.0 was used for data analysis.The statistical methods were one-way ANOVA and independent sample t-test. Results:qRT-PCR showed that there was statistical difference in the mRNA levels of E2F1( F=201.92, P<0.05) in different cell lines.The expression levels of E2F1 mRNA in LN18(4.04±0.29), SW1088(3.19±0.16)and U251(4.66±0.20) cells were higher than those in HEB(1.02±0.07)cells ( q=27.00, 19.40, 32.52, all P<0.05). After successfully constructing U251 cells with stable over-expression of E2F1 plasmid, qRT-PCR and Western blot detection results showed that: the mRNA and protein levels of E2F1, PTTG1, C-Myc and Bcl-2 in E2F1 over-expression group were higher than those in control group ( t=77.16, 57.88, 4.63, 51.13, 7.50, 70.85, 8.38, 48.81, all P<0.05). Bax mRNA(0.20±0.01) and protein(0.66±0.01) levels were lower than those in control group((1.00±0.02), (0.94±0.01)), and the differences were statistically significant ( t=1.74, 54.65, both P<0.05). After X-ray irradiation (6 Gy), CCK8 detection results showed: the proliferation ability of the three groups at 24, 48, 72 and 96 h were significantly different ( F=95.41, 187.53, 1 158.49, 7 883.78, all P<0.05). The proliferation capacity of the irradiation group were lower than those of the control group at 24, 48, 72 and 96 h ( q=19.51, 27.20, 66.60, 174.9, all P<0.05). The proliferation capacity of irradiation + E2F1 over-expression group at 24, 48, 72 and 96 h were higher than those of irradiation group ( q=10.63, 10.81, 21.11, 60.90, all P<0.05). Transwell assay results showed that there were significant differences in cell invasion and migration ability among the three groups ( F=315.38, 681.10, both P<0.05). The invasion and migration ability of cells in the irradiation group were lower than those in the control group ( q=35.09, 12.76, both P<0.05), and the invasion and migration ability of cells in the irradiation + E2F1 over-expression group were higher than those in the irradiation group ( q=52.06, 22.81, both P<0.05). Flow cytometry showed that there were significant differences in apoptosis rate and percentage of cells in each cycle among the three groups ( F=667.63, 3 213.30, 3 011.26, 861.98, all P<0.05). The percentage of the apoptosis rate, S phase and G2 phase cells in the irradiation group were higher than those in the control group ( q=51.10, 89.39, 51.82, all P<0.05), while the percentage of G1 phase cells in the irradiation group was lower than that in the control group ( q=141.2, P<0.05). The apoptosis rate and percentage of S phase and G2 phase cells in the irradiation + E2F1 over-expression group were lower than those in the irradiation group ( q=18.87, 41.42, 29.31, all P<0.05), while the number of G1 phase cells in the irradiation + E2F1 over-expression group was lower than that in the irradiation group ( q=70.73, P<0.05). Conclusion:Over-expression of E2F1 can reduce the radiosensitivity of glioma U251 cells by regulating the expression of mRNA and protein of genes related to cell cycle and apoptosis, and E2F1 may be involved in the radioresistance of glioma cells.

Objectives:To investigate the prevalence,clinical characteristics and risk factors of coronavirus disease-2019(COVID-19)in patients with pulmonary hypertension(PH). Methods:A questionnaire survey was conducted from December 30,2022 to January 6,2023 through the WeChat official account of the PH Patients Mutual Aid Organization.PH patients aged≥18 years from 26 province(municipality/autonomous region)were recruited to fill in the electronic survey questionnaire. Results:A total of 293 valid questionnaires were collected from PH patients.The mean age of patients was(40.6±12.7)years,and 226 patients(77.1%)of them were female.The vaccination rate was 59.7%(175/293),117 patients(39.9%)received three or more doses of vaccine,145 patients(49.5%)received inactivated vaccine.242 patients(82.6%)had COVID-19.The most common symptoms during infection were fever(85.5%),cough(77.7%),and fatigue(66.5%).10.7%of the patients had severe or critical COVID-19.Age(OR =1.057,95%CI:1.027-1.087,P<0.001)and comorbid pulmonary disease(OR=3.341,95%CI:1.215-9.184,P=0.019)were associated with severe or critical COVID-19.After adjusting for confounding factors,age was an independent risk factor for severe or critical COVID-19(OR=1.049,95%CI:1.019-1.080,P=0.001).Severe or critical COVID-19 was an independent risk factor for worsening heart failure in PH patients during COVID-19 pandemic(OR=10.522,95%CI:4.311-25.682,P<0.001). Conclusions:The immunization coverage of PH patients is insufficient.PH patients have a higher risk of developing severe or critical COVID-19 than general population.Ageing is an independent risk factor for severe or critical COVID-19,and the risk of worsening heart failure in PH patients with severe or critical COVID-19 is significantly increased during COVID-19 pandemic.

Objective:To compare the efficacies of robot-assisted unilateral and manual unilateral/bilateral puncture kyphoplasty (PKP) for the treatment of osteoporotic thoracolumbar fracture (OTLF).Methods:A retrospective cohort study was conducted to analyze the clinical data of 64 OTLF patients admitted to First Affiliated Hospital of Kunming Medical University from April 2021 to May 2022. The patients included 28 males and 36 females, aged 57-88 years [(74.5±5.6)years]. Fracture segments were 12 patients from T 1-T 9, 32 from T 10-L 2, and 20 from L 3-L 5. All the patients were treated with PKP. Among them, 25 patients underwent manual unilateral puncture (manual unilateral group), 18 patients underwent manual bilateral puncture (manual bilateral group), and 21 patients underwent robot-assisted unilateral puncture (robot-assisted unilateral group). The operation time, channel establishment time, intraoperative blood loss, intraoperative fluoroscopy times, bone cement injection volume, and bone cement spatial distribution score were compared among the three groups. The visual analogue score (VAS), Oswestry disability index (ODI) and Cobb angle of kyphosis were compared among the three groups before operation, at 3 days and 3 months after operation, and at the last follow-up. The incidence of complications was compared. Results:All the patients were followed up for 6-10 months [(7.0±0.9)months]. The operation time of the manual unilateral group was (30.2±6.1)minutes, which was shorter than (37.9±8.9)minutes of the robot-assisted unilateral group and (49.0±10.2)minutes of the manual bilateral group; the operation time of the robot-assisted unilateral group was markedly shorter than that of the manual bilateral group (all P<0.05). The channel establishment time of the robot-assisted unilateral group was (4.7±1.4)minutes, which was markedly shorter than (10.4±4.4)minutes of the manual unilateral group and (21.7±6.2)minutes of the manual bilateral group (all P<0.05). The intraoperative blood loss of the robot-assisted unilateral group was (23.8±7.2)ml, which was less than (34.3±7.7)ml of the manual unilateral group and (55.9±18.7)ml of the manual bilateral group (all P<0.05). The number of intraoperative fluoroscopy of the robot-assisted unilateral group was (12.1±2.5)times, which was markedly less than (21.2±5.9)times of the manual unilateral group and (39.6±9.5)times of the manual bilateral group (all P<0.05). The channel establishment time, intraoperative blood loss and intraoperative fluoroscopy times of the manual unilateral group were markedly shorter or less than those of the manual bilateral group (all P<0.05). The bone cement injection volume and bone cement distribution score of the robot-assisted unilateral group were (4.7±1.3)ml and (7.9±1.2)points, which were not statistically different from (5.7±1.3)ml and (8.7±1.1)points of the manual bilateral group (all P>0.05), but were markedly higher than (3.0±1.3)ml and (5.1±1.8)points of the manual unilateral group (all P<0.05). There were no significant differences in VAS, ODI and Cobb angle among the three groups at 3 days, 3 months after operation and at the last follow-up (all P>0.05), but which were all lower than those before surgery (all P<0.05). There were no significant differences in VAS, ODI and Cobb angle among three groups before operation, at 3 days, 3 months after surgery and at the last follow-up (all P>0.05). The complication rate was 4.8% (1/21) of the robot-assisted unilateral group, 32.0% (8/25) of the manual unilateral group, and 33.3% (6/18) of the manual bilateral group, with no significant difference between the manual unilateral group and the manual bilateral group ( P>0.05), but both of which was markedly higher than that of the robot-assisted unilateral group ( P<0.05). Conclusion:Robot-assisted unilateral puncture and manual unilateral/bilateral puncture PKP can both achieve satisfactory results for the treatment of OTLF, but robot-assisted unilateral puncture has shorter channel establishment time, less intraoperative blood loss and intraoperative fluoroscopy times, and lower complication rate.

Objective:To investigate the risk factors of cement vascular leakage after vertebral augmentation for osteoporotic vertebral compression fracture (OVCF).Methods:A case-control study was conducted to analyze the clinical data of 217 patients with OVCF undergone vertebral augmentation [percutaneous vertebroplasty (PVP) or percutaneous kyphoplasty (PKP)] in First and Second Affiliated Hospital of Kunming Medical University from October 2019 to October 2020. There were 79 males and 138 females, at the age range of 58-88 years [(73.1±6.9)years]. According to the occurrence of bone cement vascular leakage, the patients were divided into vascular leakage group ( n=39) and vascular leakage free group ( n=178). The gender, age, bone mineral density, time from injury to operation, anatomical position of injured vertebrae, degree of vertebral compression, integrity of posterior wall, intravertebral fissure sign, vertebrobasilar venous foramen, surgical approach, surgical method, cement injection period, cement injection speed, cement injection volume and cement injection area were recorded. Univariate analysis was used to detect the correlation of those indices with cement vascular leakage after vertebral augmentation. Multivariate Logistic regression analysis was used to identify the independent risk factors for cement vascular leakage after vertebral augmentation. Results:Univariate analysis showed that there was a correlation of cement vascular leakage after vertebral augmentation with time from injury to operation, degree of vertebral compression, integrity of posterior wall, intravertebral fissure sign, vertebrobasilar venous foramen, surgical method, cement injection period, cement injection speed, cement injection volume and cement injection area (all P<0.05), apart from gender, age, bone mineral density, anatomical position of injured vertebrae or surgical approach (all P>0.05). Multivariate Logistic regression analysis showed intravertebral fissure sign ( OR=7.00, 95% CI 1.57-31.30, P<0.05), vertebrobasilar venous foramen ( OR=7.52, 95% CI 1.94-29.16, P<0.01), PVP ( OR=10.98, 95% CI 2.51-47.94, P<0.01), injection of cement in thinning period ( OR=5.91, 95% CI 1.45-24.15, P<0.05), injection of large volume of cement ( OR=3.60, 95% CI 1.70-7.65, P<0.01) and marginal injection of cement ( OR=24.80, 95% CI 5.28-116.37, P<0.01) were significantly associated with cement vascular leakage after vertebral augmentation for OVCF. Conclusion:Intravertebral fissure sign, vertebrobasilar venous foramen, PVP, injection of cement in thinning period, injection of large volume of cement and marginal injection of cement are independent risk factors for cement vascular leakage after vertebral augmentation for OVCF.

Objective:To investigate the clinicopathological features, treatment programs and prognosis of patients with primary diffuse large B-cell lymphoma (DLBCL) in cavernous sinus.Methods:The clinical data of a patient with primary DLBCL in cavernous sinus who were admitted to Wuhan No.1 Hospital in December 2020 were retrospectively analyzed, and the relevant literature was reviewed.Results:The patient was a 63-year-old female who underwent resection of the cavernous sinus lesion, and the pathological diagnosis was DLBCL. The patient received 6 courses of R-CHOP regimen chemotherapy, lumbar puncture + intrathecal injection of chemotherapy drugs, and twice additional rituximab immunochemotherapy, and no tumor cells were found in the results of liquid-based thin layer cytology for cerebrospinal fluid exfoliated cells; twice magnetic resonance imaging (MRI) re-examination after the operation showed no recurrence and adjacent metastasis of the tumor. The patient's symptoms were significantly improved without residual neurological sequelae.Conclusions:Primary DLBCL in cavernous sinus is rare in clinical practice, early diagnosis is crucial for the prognosis of patients, and different protein expression may indicate the prognosis. Biopsy, complete resection of the tumor under the premise of preserving important anatomical structures and functions, and standardized chemotherapy combined with intrathecal injection local chemotherapy can effectively prolong the survival time of patients and improve the quality of life.