Background: Nasopharyngeal carcinoma (NPC) is characterized by high programmed death-ligand 1 (PD-L1) expression and abundant infiltration of non-malignant lymphocytes, which renders patients potentially suitable candidates for immune checkpoint blockade therapies. Palate, lung, and nasal epithelium clone (PLUNC) inhibit the growth of NPC cells and enhance cellular apoptosis and differentiation. Currently, the relationship between PLUNC (as a tumor-suppressor) and PD-L1 in NPC is unclear. Methods: We collected clinical samples of NPC to verify the relationship between PLUNC and PD-L1. PLUNC plasmid was transfected into NPC cells, and the variation of PD-L1 was verified by western blot and immunofluorescence. In NPC cells, we verified the relationship of PD-L1, activating transcription factor 3 (ATF3), and β-catenin by western blot and immunofluorescence. Later, we further verified that PLUNC regulates PD-L1 through β-catenin. Finally, the effect of PLUNC on β-catenin was verified by co-immunoprecipitation (Co-IP). Results: We found that PLUNC expression was lower in NPC tissues than in paracancer tissues. PD-L1 expression was opposite to that of PLUNC. Western blot and immunofluorescence showed that β-catenin could upregulate ATF3 and PD-L1, while PLUNC could downregulate ATF3/PD-L1 by inhibiting the expression of β-catenin. PLUNC inhibits the entry of β-catenin into the nucleus. Co-IP experiments demonstrated that PLUNC inhibited the interaction of DEAD-box helicase 17 (DDX17) and β-catenin. Conclusions PLUNC downregulates the expression of PD-L1 by inhibiting the interaction of DDX17/β-catenin in NPC.

Background: Nasopharyngeal carcinoma (NPC) is characterized by high programmed death-ligand 1 (PD-L1) expression and abundant infiltration of non-malignant lymphocytes, which renders patients potentially suitable candidates for immune checkpoint blockade therapies. Palate, lung, and nasal epithelium clone (PLUNC) inhibit the growth of NPC cells and enhance cellular apoptosis and differentiation. Currently, the relationship between PLUNC (as a tumor-suppressor) and PD-L1 in NPC is unclear. Methods: We collected clinical samples of NPC to verify the relationship between PLUNC and PD-L1. PLUNC plasmid was transfected into NPC cells, and the variation of PD-L1 was verified by western blot and immunofluorescence. In NPC cells, we verified the relationship of PD-L1, activating transcription factor 3 (ATF3), and β-catenin by western blot and immunofluorescence. Later, we further verified that PLUNC regulates PD-L1 through β-catenin. Finally, the effect of PLUNC on β-catenin was verified by co-immunoprecipitation (Co-IP). Results: We found that PLUNC expression was lower in NPC tissues than in paracancer tissues. PD-L1 expression was opposite to that of PLUNC. Western blot and immunofluorescence showed that β-catenin could upregulate ATF3 and PD-L1, while PLUNC could downregulate ATF3/PD-L1 by inhibiting the expression of β-catenin. PLUNC inhibits the entry of β-catenin into the nucleus. Co-IP experiments demonstrated that PLUNC inhibited the interaction of DEAD-box helicase 17 (DDX17) and β-catenin. Conclusions PLUNC downregulates the expression of PD-L1 by inhibiting the interaction of DDX17/β-catenin in NPC.

Background: Nasopharyngeal carcinoma (NPC) is characterized by high programmed death-ligand 1 (PD-L1) expression and abundant infiltration of non-malignant lymphocytes, which renders patients potentially suitable candidates for immune checkpoint blockade therapies. Palate, lung, and nasal epithelium clone (PLUNC) inhibit the growth of NPC cells and enhance cellular apoptosis and differentiation. Currently, the relationship between PLUNC (as a tumor-suppressor) and PD-L1 in NPC is unclear. Methods: We collected clinical samples of NPC to verify the relationship between PLUNC and PD-L1. PLUNC plasmid was transfected into NPC cells, and the variation of PD-L1 was verified by western blot and immunofluorescence. In NPC cells, we verified the relationship of PD-L1, activating transcription factor 3 (ATF3), and β-catenin by western blot and immunofluorescence. Later, we further verified that PLUNC regulates PD-L1 through β-catenin. Finally, the effect of PLUNC on β-catenin was verified by co-immunoprecipitation (Co-IP). Results: We found that PLUNC expression was lower in NPC tissues than in paracancer tissues. PD-L1 expression was opposite to that of PLUNC. Western blot and immunofluorescence showed that β-catenin could upregulate ATF3 and PD-L1, while PLUNC could downregulate ATF3/PD-L1 by inhibiting the expression of β-catenin. PLUNC inhibits the entry of β-catenin into the nucleus. Co-IP experiments demonstrated that PLUNC inhibited the interaction of DEAD-box helicase 17 (DDX17) and β-catenin. Conclusions PLUNC downregulates the expression of PD-L1 by inhibiting the interaction of DDX17/β-catenin in NPC.

Objective To analyze the risk factors for cough variant asthma (CVA) and investigate the influence of indoor environment on CVA. Methods From July 2021 to August 2024, 315 patients admitted to the hospital due to CVA were selected as the CAV group. Meanwhile, 100 healthy individuals were selected as the control group. Clinical data of all subjects were collected. Univariate analysis and multivariate logistic regression analysis were used to identify the influencing factors of CVA. Results The proportions of subjects with family history and recurrent respiratory tract infection in the CVA group were higher than those in the control group (P<0.05). The CVA group had significantly higher rates of indoor renovation, mold growth, infrequent bedding cleaning, opening window for ventilation once to 3 times a week, keeping pets, and passive smoking compared to the control group within one year, and the differences were statistically significant (P<0.05). Multivariate logistic regression analysis results showed that indoor-decoration in the past year (OR=2.282, 95%CI: 1.1454.549), mould growth (OR=2.036, 95%CI: 1.228-3.376), opening window for ventilation once to 3 times a week (OR=1.895, 95%CI: 1.253-2.865), seldom cleaning bedding (OR=2.257, 95%CI: 1.132-4.499), keeping pets (OR=2.071, 95%CI: 1.146-3.743), and passive smoking (OR=2.208, 95%CI: 1.377-3.541) were independent risk factors for CVA (P<0.05). Conclusion There is a significant correlation between the occurrence of CVA and indoor environment. Changes in indoor environment include indoor-decoration in the past year, mould growth, low frequency of opening window for ventilation, low frequency of bedding cleaning, keeping pets and passive smoking which are risk factors for the occurrence of CVA.

A public hospital Party branch,in the establishment of the"Four Orientations"project(Leading groups work effectively,Party branches work with promising methods,Party building achieves a fame with brand,and each unit has its own model)and"Four Strengths"(strong political role,strong Party branch team,strong team of Party members,and strong per-formance)has combined its work with bold exploration at the intersection of party building and discipline development.The branch has refined a distinctive"Bridge Culture"concept,symbolizing its identity,and has implemented four key projects:"Building bridges""Consolidating bridges""Expanding bridges"and"Preserving bridges".Collectively,these initiatives have led to the development of a"Bridge Culture"brand.The branch's role,as a vanguard in discipline advancement and public health services,has been fully leveraged,aiming to drive high-quality development of discipline through the vehicle of ideological and political work.

Objective A porcine vocal cord injury model was established to analyze and compare the damage range of porcine vocal cords and the repair process after vocal cord injury caused by CO2 laser surgery and radiofre-quency ablation with plasma spot excitation technology.Methods Fifteen pigs,30 sides of vocal cords,were used in this study.The bilateral vocal cords of the same pig were divided into CO2 laser and radiofrequency coblation(RFC)groups respectively.CO2 laser and radiofrequency ablation with plasma spot excitation technology were used to perform ubligamental cordectomy.Three pigs were sacrificed after anesthesia on postoperative day 1 and postop-erative 3,6,9,and 15 weeks.The vocal cords were harvested for HE staining.The depth of edema degeneration zone and the fibrous tissue thickness were measured vertically in the two groups,and the postoperative vocal cord damage range and vocal cord repair process were compared between the two groups.Results The depth of edema degeneration zone in the CO2 laser group was deeper than that in the RFC group at 1 day postoperatively(P＜0.01).There was no significant difference in the depth of the edema degeneration zone between the two groups at the 3rd,6th,and 9th weeks after operation(P＞0.05).The depth of the edema degeneration zone at 3rd weeks postoperatively was less than that at 1 day postoperatively,and at 6th weeks postoperatively was less than that at 3rd weeks postoperatively for both operation modes(P＜0.05).There was no statistically significant difference be-tween 9th weeks postoperatively and 6th weeks postoperatively(P＞0.05).At the 15th week after operation,the fibrous tissue thickness of the vocal fold lamina propria in the RFC group was thinner than that in the CO2 laser group(P＜0.01).Conclusion Radiofrequency ablation with plasma spot excitation technology causes less damage to porcine vocal fold than CO2 laser.There is no significant difference between the two operation modes in terms of postoperative repair process,while the fibrous tissue in the lamina propria of the vocal fold is thinner in the RFC group when a vocal fold scar is formed.

Objective To compare the clinical efficacy of abdominal ultrasound-guided endoscopic retrograde appendicitis therapy(ERAT)with laparoscopic appendectomy(LA)for acute uncomplicated appendicitis using propensity score matching.Methods The clinical data of 441 patients with acute uncomplicated appendicitis admitted to the Third People's Hospital of Yunnan Province from March 2020 to April 2023 were collected.The cases were classified based on the differences in surgical method and divided into the ERAT group(n = 30)and LA group(n = 411).The clinical efficacy of patients was compared between the two groups after reducing confounding bias by propensity score matching(PSM).Results After PSM,a total of 30 pairs of patients in the two groups were successfully matched,and the baseline data of the two groups met the requirements for comparability.At 24 hours after the operation,the ERAT group exhibited lower white blood cells,neutrophil counts,and C-reactive protein levels compared to the LA group,and these differences were statistically significant(P<0.05).There was no significant difference in the operation time and total effective rate between the ERAT group and the LA group(P>0.05).However,the ERAT group had lower intraoperative blood loss and shorter pain relief time compared to the LA group,and these differences were statistically significant(P<0.05).Conclusion Abdominal ultrasound-guided endoscopic retrograde appendicitis treatment is an effective,safe,and feasible technique with good prospects for the treatment of acute uncomplicated appendicitis.

OBJECTIVE To explore the effects of 5，10-methylenetetetrahydrofolate reductase （MTHFR） gene polymorphism on the adverse reactions in patients with osteosarcoma after the first high-dose methotrexate （HD-MTX） treatment. METHODS A prospective study was conducted to include 53 patients with osteosarcoma treated with HD-MTX at the first admission in General Hospital of Eastern Theater Command. The dose of MTX was evaluated according to the polymorphism of rs1801133 in the METHFR gene and demographic factors， then whole pharmaceutical monitoring was conducted. The data on liver toxicity， renal toxicity， hematological toxicity， and gastrointestinal reaction were collected after the first chemotherapy cycle. Single factor analysis and binary Logistic regression analysis were used to analyze the correlation between MTX dose， 24 h blood drug concentration， and rs1801133 locus genotype with four adverse reactions. RESULTS The MTX dosage in patients with CC wild type was significantly higher than that in TT mutant type （7.97 g/m2 vs. 6.98 g/m2， P＝0.030）， but this difference did not affect the 0 h and 24 h blood drug concentrations of MTX. The above four adverse reactions were not related to the dose of MTX. The results of binary Logistic regression analysis showed that carrying one T allele increased the risk of developing hematological toxicity by 4.13 times（95% confidence interval：1.35-12.62，P＝0.013）. When 24 h plasma concentration threshold of MTX was set to 2.65 µmol/L， the sensitivity and specificity of predicting liver function damage were 53.33% and 86.96%， respectively； when the threshold was set to 7.28 μmol/L， the sensitivity and specificity of predicting renal damage were 100% and 81.63%. CONCLUSIONS The polymorphism of the rs1801133 in the MTHFR gene is associated with hematological toxicity of MTX. Patients who take HD-MTX for the first time and carry the T allele have a high risk of hematological toxicity. The 24 h plasma concentration of MTX is related to liver toxicity and renal toxicity. In addition， monitoring the 24 h blood drug concentration can predict liver and renal toxicity， and take early intervention.

Objective:To investigate the effect of dexmedetomidine combined with chloroprocaine on epidural anesthesia for cesarean section.Methods:A total of 133 women who underwent epidural anesthesia for cesarean section at the Department of Anesthesiology, Jinhua People's Hospital between January 2020 and December 2022 were included in this prospective case-control study. These women were divided into a ropivacaine group ( n = 66) and a chloroprocaine group ( n = 67) using a random number table method. The ropivacaine group received epidural anesthesia with dexmedetomidine combined with ropivacaine, while the chloroprocaine group received epidural anesthesia with dexmedetomidine combined with chloroprocaine. The anesthesia effect (anesthesia onset time, anesthesia duration, peak effect time), changes in blood pressure (systolic blood pressure, diastolic blood pressure), adverse reactions (shivering, nausea and vomiting, urinary retention, skin itching, numbness of lower limbs), and satisfaction with muscle relaxation were observed in the two groups. Results:The anesthesia onset time, anesthesia duration, and peak effect time in the chloroprocaine group were (6.91 ± 1.54) minutes, (61.54 ± 5.31) minutes, and (11.79 ± 4.12) minutes, respectively, which were significantly shorter than those in the ropivacaine group [(9.65 ± 1.92) minutes, (83.57 ± 6.69) minutes, (18.32 ± 4.81) minutes, t = 9.08, 21.05, 8.41, all P < 0.001). The systolic and diastolic blood pressure increased in both groups after 10 minutes of anesthesia and at the end of the procedure; however, the increments observed in the chloroprocaine group were relatively smaller. There were significant differences in systolic and diastolic blood pressure, measured at 10 minutes of anesthesia and at the end of the procedure, between the two groups ( F = 7.36, P < 0.001; F = 5.12, P = 0.001). There were significant differences in systolic and diastolic blood pressure between different time points ( F = 10.03, P < 0.001; F = 6.72, P < 0.001). The group-by-time interaction effect on systolic and diastolic blood pressure was also highly significant ( F = 9.83, P < 0.001; F = 8.01, P < 0.001). The chloroprocaine group exhibited a significantly lower incidence of adverse reactions compared with the ropivacaine group [4.48% (3/67) vs. 15.15% (10/66), χ2 = 4.29, P < 0.05). Additionally, the chloroprocaine group had a significantly higher satisfaction rate with muscle relaxation compared with the ropivacaine group [94.03% (63/66) vs. 81.82% (54/66), Z = 5.73, P < 0.05]. Conclusion:The combination of dexmedetomidine and chloroprocaine offers remarkable benefits in epidural anesthesia for cesarean sections. This combined approach not only enhances epidural anesthesia but also stabilizes the blood pressure of puerperants, reduces adverse reactions, and provides exceptional muscle relaxation. It deserves consideration for clinical application.

OBJECTIVE To establish high performance liquid chromatography （HPLC） fingerprint of Xiaohe syrup and determine the contents of 10 effective ingredients in them. METHODS With 12 batches of Xiaohe syrup as samples， ultra-high performance liquid chromatography-tandem mass spectrometry （UPLC-MS/MS） was adopted with Athena C18 （250 mm×4.6 mm， 5 μm） as the chromatographic column， acetonitrile-0.1% phosphoric acid aqueous solution as mobile phase for gradient elution. The flow rate was 1.0 mL/min， and the detection wavelength was 210 nm. Similarity Evaluation System for Traditional Chinese Medicine Chromatographic Fingerprint （2012A version） was imported to establish the fingerprint of Xiaohe syrup and evaluate the similarity. The content determination was performed on ACQUITY UPLC BEH C18（ 100 mm×2.1 mm， 1.7 μm） chromatographic column， with 0.01% formic acid acetonitrile-0.01% formic acid water as mobile phase for gradient elution at a flow rate of 0.4 mL/min； combined with high-resolution mass spectrometer， positive and negative ions were scanned with an electric spray ion source to determine the content of each main component in 12 batches of Xiaohe syrup. RESULTS A total of 33 common peaks were calibrated in 12 batches of samples， with similarities greater than 0.97； 10 chromatographic peaks were confirmed， namely flavonoid glycosides， paeoniflorin， ferulic acid， naringin， rosmarinic acid， neohesperidin， salvianolic acid B， tetrahydropalmatine， saikosaponin A， and saikosaponin D. The results of content determination showed that the above 10 components had good linear relationships within their respective mass concentration ranges （all R 2＞0.999）， with contents ranging from 0.35 to 0.64， 3.15 to 5.61， 0.11 to 0.17， 1.68 to 3.17， 1.59 to 1.90， 1.15 to 1.64， 0.78 to 1.48， 0.11 to 0.26， 0.06 to 0.13， and 0.33 to 0.61 mg/mL， respectively. CONCLUSIONS The main components of 12 batches of Xiaohe syrup are similar， but the contents vary； HPLC fingerprint and UPLC-MS/MS content determination method established in this study can be used for comprehensive quality evaluation of Xiaohe syrup.