Objective: To analyze the distribution characteristics of fluoride and trichloromethane in drinking water in rural schools in Guizhou Province and assess their health risks, so as to provide a scientific basis for ensuring the safety of drinking water in rural schools. Methods: During the dry season (March to May) and wet season (July to September) of 2020 to 2022, 788 rural primary and secondary schools in agricultural counties (districts) in Guizhou Province were selected for investigation by using a direct sampling method. A total of 1 566 drinking water samples were collected from these schools, and the mass concentrations of fluoride and trichloromethane in the water samples were detected. The Mann-Whitney U test was used for intergroup comparison, and a health risk assessment model was employed to evaluate the health risks of students oral intake of fluoride and trichloromethane. Results: From 2020 to 2022, the mass concentrations of fluoride and trichloromethane in the drinking water of rural schools in Guizhou Province all met the standards, and the ranges were no detection to 0.99 mg/L and (no detection to 0.06)×10 -3 mg/L, respectively. The mass concentrations of fluoride in dry and wet seasons were 0.05(0.05,0.10), 0.05(0.05,0.10) mg/L, the mass concentrations of trichloromethane were [0.02(0.02,1.00)]×10 -3 , [0.02(0.02,1.00)]×10 -3 mg/L, the mass concentrations of fluoride in factory water and terminal water were 0.05(0.05,0.05), 0.05(0.05,0.10) mg/L, and the differences were not statistically significant ( Z=-0.04, -0.88, - 0.98 , P >0.05). There was a statistically significant difference in the mass concentration of trichloromethane between factory water and peripheral water [0.02(0.02,0.02)×10 -3 , 0.02(0.02,1.05)×10 -3 mg/L]( Z=-2.16, P < 0.05 ). The non-carcinogenic risk assessment values for students oral exposure to fluoride and trichloromethane were in the range of 0.01(0.01,0.03)-0.03(0.03,0.06) and [0.26( 0.26 ,14.54)]×10 -4 -[0.52(0.52,48.62)]×10 -4 , respectively, all of which were at acceptable levels; the carcinogenic risk assessment values for oral exposure to trichloromethane were in the range of [0.08(0.08, 4.51 )]×10 -7 -[0.16(0.16,15.07)]×10 -7 , indicating a low risk. Conclusions The health risks of students expore to fluoride and trichloromethane in drinking water in rural schools of Guizhou Province are low. It is necessary to strengthen the standardized management of disinfection in some rural drinking water projects and the monitoring of fluoride in water sources to reduce the exposure risk to children.

Objective:To investigate the safety and efficacy of the artery-first approach pancreaticoduo-denectomy (PD) combined with portal vein/superior mesenteric vein (PV/SMV) resection and reconstruction for pancreatic head malignancies.Methods:A retrospective analysis was conducted on 322 patients who underwent PD with PV/SMV resection and reconstruction at the Hepatobiliary Pancreatic Surgery Department of the First Hospital Affiliated to Naval Medical University between January 2016 and December 2022. Patients were divided into the artery-first approach PD group (AFA-PD group, n=165) and standard PD group (SPD group, n=157) based on surgical approach. Baseline characteristics, surgical outcomes, postoperative outcomes, pathological results and survival data were compared between two groups. Results:Compared to the SPD group, the AFA-PD group exhibited significantly reduced intraoperative blood loss (500 ml vs 600 ml), lower rates of obvious intraoperative blood loss (≥1 000 ml: 25.45% vs 40.13%), and decreased transfusion requirements (26.67% vs 52.87%). Postoperatively, the AFA-PD group demonstrated lower incidence of grade B/C pancreatic fistula (10.30% vs 19.75%) and higher textbook outcome achievement (78.79% vs 66.24%). Pathologically, the AFA-PD group achieved superior lymph node yield (20 nodes vs 18 nodes) and higher R 0 resection rates (79.39% vs 64.33%), particularly at the posterior pancreatic margin (96.97% vs 91.72%, P=0.040), SMA margin (92.07% vs 82.17%), and SMV margin (88.48% vs 78.98%). Multivariate logistic regression identified arterial invasion >180°, venous invasion >180°, lymph node metastasis, and the artery-first approach as independent predictors of R 0 resection. The AFA-PD group showed prolonged median survival (19.17 month vs 15.73 month). All aforementioned differences were statistically significant (all P value <0.05). Conclusions:The artery-first approach PD combined with PV/SMV resection and reconstruction is safe and effective for pancreatic head malignancies, significantly improving R 0 resection rates and patients' survival outcomes.

BACKGROUND:Previous studies have demonstrated that moxibustion can alleviate osteoarthritis-induced cartilage lesions and delay the progression of knee osteoarthritis. In a previous study conducted by our research group,it was found that regulating the circPan3/miR-667-5p/Ghrelin signaling pathway can enhance the level of autophagy in chondrocytes,thereby exerting a cartilage protective role in knee osteoarthritis. OBJECTIVE:To explore the effect of moxibustion on knee osteoarthritis cartilage in rats based on the circPan3/miR-667-5p/Ghrelin signaling pathway. METHODS:Sprague-Dawley rats were randomly divided into three groups (n=10 per group):sham operation,model,and moxibustion groups. A rat model of knee osteoarthritis was established in the latter two groups by anterior cruciate ligament transection and medial meniscus resection. Rats in the sham operation group underwent arthrotomy only. At 6 weeks after modeling,moxibustion intervention at Zusanli and Shenyu acupoints was applied in the moxibustion group,20 minutes daily for 4 weeks,while the other two groups did not receive any special treatment. After 4 weeks,histopathological staining was performed to observe the degree of synovial lesions and cartilage damage in the knee joint. Additionally,changes in the serum levels of inflammatory cytokines,interleukin-6 and tumor necrosis factor-α,were detected by enzyme-linked immunosorbent assay. Furthermore,chondrocytes isolated from the above three groups of rats were divided into three groups:a normal control group,a model group,and a moxibustion group. The expression levels of cartilage matrix anabolic molecules (type Ⅱ collagen and Sox9),matrix degradation molecules (matrix metalloproteinase 13 and ADAMTS5),autophagy markers (ATG5,Beclin-1,microtubule-associated protein 1 light chain 3),Ghrelin,CircPan3,and miR-667-5P were determined by western blot and qRT-PCR in each group. RESULTS AND CONCLUSION:After 4 weeks of treatment,the model group exhibited significant thickening of the synovium,infiltration of inflammatory cells,narrowing of the joint space,rough and uneven cartilage surfaces,thinning,reduction in the number of chondrocytes,a significant increase in synovitis and Osteoarthritis Research Society International scores,and a significant up-regulation of interleukin-6 and tumor necrosis factor-α levels (P<0.0001). In comparison,the sham operation group showed no significant changes. Compared with the model group,the moxibustion group exhibited a reduction in synovial thickening,a decrease in inflammatory cell infiltration,an increase in joint space,a reduction in cartilage roughness and loss of integrity,an increase in the number of chondrocytes,a reduction in synovitis and Osteoarthritis Research Society International scores,and a significant reduction in the levels of interleukin-6 and tumor necrosis factor-α (P<0.0001). The results of in vitro experiments demonstrated that the expression of matrix metalloproteinase 13,ADAMTS5,and miR-667-5P was elevated,while the expression of type Ⅱ collagen,Sox9,autophagy markers,Ghrelin,and Circpan3 was reduced in the model group compared with the normal control group (P<0.01). Moxibustion was found to reverse these changes in the moxibustion group compared with the model group (P<0.01). To conclude,moxibustion may enhance chondrocyte autophagy by modulating the circPan3/miR-667-5p/Ghrelin signaling pathway,which may inhibit knee osteoarthritis inflammation and cartilage destruction,exerting a protective effect on cartilage.

Objective To analyze the dual-channel with single channel recorded somatosensory evoked potentials(SSEPs)monitoring in the thoracic vertebral disease that underwent surgical fixation surgery waveform differentiation and evaluate the value of dual-channel SSEPs applied in thoracic surgery diseases.Methods The study included 135 patients who underwent surgery for thoracic vertebra disease in Xi'an Honghui hospital from November 2019 to November 2023.Of them,66 underwent conventional single-channel SSEPs monitoring and 69 underwent dual-channel SSEPs monitoring.By observing the waveform differentiation of single-channel SSEPs and dual-channel SSEPs,Chi-square test and Fisher exact test were used to analyze the influences of age and etiological classification on the waveform differentiation and monitoring success rate of SSEPs.The success rate of intraoperative monitoring and the incidence of postoperative adverse events in alarm cases were compared between the two groups.Results Univariate analysis showed that age group and etiological classification of thoracic vertebral diseases affected the success rate of intraoperative SSEPs monitoring.Among the etiological classification,the SSEPs waveform differentiation in fracture group was the least ideal.Intraoperative monitoring results showed that the success rate of single-channel SSEPs monitoring was 80.30％,while the success rate of dual-channel SSEPS monitoring was 98.55％(P＜0.05).In the intraoperative alarm cases,the incidence of postoperative adverse events monitored by single-channel SSEPs was 66.67％;the incidence of adverse events after dual-channel SSEPs monitoring was 33.33％.Conclusion The age of patients and etiological type of thoracic spine diseases affect the success rate of intraoperative SSEPs monitoring.Dual-channel SSEPs monitoring can effectively and accurately evaluate the function of patients with posterior spinal cord conduction pathway.Using dual-channel SSEPs monitoring can significantly improve the success rate of monitoring and reduce the occurrence of postoperative adverse events in patients with thoracic vertebra disease.

Objective:To seek any correlation between hypoesthesia and sensory disturbance to motor function among stroke survivors.Methods:One hundred and two stroke survivors with hyperalgesia were treated with sinusoidal alternating current at 2000Hz, 250Hz or 5Hz to stimulate the fingers and toes on their healthy and hemiplegic sides. Current perception thresholds (CPTs) and pain tolerance thresholds (PTTs) were recorded. The correlation between the degree of sensory disturbance in the hemiplegic limb and muscle strength was explored.Results:①The degree of sensory impairment in those who had suffered a cerebral hemorrhage was significantly greater than among those with cerebral infarction, without significant difference in pain tolerance between different genders and affected sides. ②All of the patients with sensory impairment showed significantly higher CPT and PTT values at the different frequencies, with a positive correlation between them. ③The CPT values of the affected hand and foot at the different frequencies were negatively correlated with muscle strength on the affected side.Conclusions:Both CPT and PTT can usefully represent the degree of sensory disturbance after a stroke. The CPT values of patients with different types of stroke are significantly different, and the degree of sensory disturbance is correlated with the muscle strength of the affected side. Therefore, it is helpful for prognostic judgment and individualized rehabilitation treatment planning by quantifying the degree of sensory disturbance.

Objective To explore the pharmacokinetic(PK)characteristics of desloratadine tablets and reference drugs in healthy subjects,and evaluate their bioequivalence and safety.Methods The random,open,two-period,cross-over pharmacokinetic study method was adopted,each subject received a single oral dose of desloratadine tablets test drug(T)or reference drug(R)for 5 mg.The concentrations of desloratadine and 3-hydroxy desloratadine in plasma were determined by liquid chromatography-tandem mass spectrometry(LC-MS/MS);and the PK parameters were calculated by WinNonlin 8.1 software to evaluate the bioequivalence.Results The main PK parameters of T and R of desloratadine were as follows:the fasting condition Cmax were respectively(3 809.82±1 016.54)and(3 642.36±777.07)pg·mL-1;AUC0-120h were respectively(5.75 ×104±5.03 ×104)and(5.51 × 104±4.00 × 104)pg·h·mL-1;AUC0-∞ were respectively(6.85× 104±1.03× 104)and(6.37 × 104±7.92 × 104)pg·h·mL-1.The fed condition Cmax were respectively(4 398.98±1 191.22)and(4 744.4±1 511.97)pg·mL-1;AUC0-120h were respectively(5.25 × 104±1.82 × 104)and(5.55 × 104±1.98 × 104)pg·h·mL-1;AUC0-∞ were respectively(5.37 × 104±1.86 × 104)and(5.68 × 104±2.04 × 104)pg·h·mL-1.The 90％confidence interval of Cmax,AUC0-t and AUC0-∞ of desloratadine were all within 80.00％～125.00％.Conclusion There was no significant difference in the main PK parameters between T tablets and R under fasting or high-fat postprandial conditions,and desloratadine tablets were bioequivalent,safe and well tolerated.

Anticoagulants are widely used in the prevention and treatment of thromboembolism.Existing anticoagulants share the common feature of antagonizing or blocking critical steps in the coagulation cascade,which also increases the risk of bleeding.Studies have indicated that factor Ⅺ inhibitors represent a potential therapeutic option for balancing thrombosis and bleeding risks.In recent years,various factor Ⅺ inhibitors,including antisense oligonucleotides(ASOs),monoclonal antibodies,synthetic small molecules,natural peptides,and aptamers,have been extensively researched as potentially exploitable anticoagu-lants.Research findings also suggest that factor Ⅺ inhibitors can reduce bleeding risks while ensuring anticoagulant efficacy,ex-hibiting potential for thrombosis prevention and treatment in patient populations such as those with end-stage renal disease,non-cardioembolic ischemic stroke,and acute coronary syndrome.This article reviewed the mechanisms of action,drug classes,pharma-cological characteristics,and clinical research progress of factor Ⅺ inhibitors,aiming to provide insights into the development of new anticoagulants and clinical anticoagulant therapies.

With the deepening of molecular biology and cell biology research,the regulatory mechanism of autophagy has been gradually revealed,providing new ideas for the treatment of numerous diseases.Autophagy may be closely related to pathological changes such as apoptosis resistance of fibroblast-like synoviocytes,disturbances in bone metabolic homeostasis,and antigen presentation,the regulation of autophagy homeostasis may be an important approach for the treatment of rheumatoid arthritis(RA).In this paper,we provide a review on the pathological mechanism of autophagy in RA,with a view to providing a theoretical basis for later studies.

Objective To investigate the clinical characteristics and prognostic risk factors in elderly patients with acute myeloid leukemia(AML).Methods A retrospective analysis was conducted on the clinical data of 101 elderly AML patients admitted to Affiliated Hospital of Jiaxing University from January 2022 to December 2024.All patients were treated with azacitidine+venetoclax regimen.The clinical characteristics of patients and the risk factors related to prognosis were explored.Results The median follow-up was 14 months.Among the 101 patients,74 achieved complete remission or complete remission with incomplete hematological recovery.The median overall survival(OS)of patients with aged ≥70 years,white blood cell count＞50 × 109/L,TP53 mutation,complex chromosomes,and high-risk European leukemia net(ELN)risk stratification was significantly shortened(P＜0.05).Multivariate analysis showed that age(HR=0.125,95％CI:0.023-0.662,P=0.015),white blood cell count(HR=0.145,95％CI:0.032-0.662,P=0.013),and ELN risk stratification(HR=100.397,95％CI:14.395-700.207,P＜0.001)were all independent influencing factors for OS in elderly AML patients.Conclusion Age,white blood cell count and ELN risk stratification are all independent influencing factors affecting OS in elderly AML patients.

Objective:To investigate the clinical efficacy of haploidentical high-dose in vitro non-T-cell-depleted peripheral blood hematopoietic stem cell transplantation (haplo-HDPSCT) in treating adult patients with Ph + acute lymphoblastic leukemia (Ph + ALL) . Method:This retrospective analysis was conducted on the clinical efficacy of 25 adult patients with Ph + ALL who underwent haplo-HDPSCT from July 2011 to June 2022 at our hospital. Results:This study included 25 patients with a median age of 27 (16-61) years, consisting of 12 males and 13 females. CR1 and ≥CR2 before transplantation were found in 23 and 2 cases, positive and negative minimal residual lesions were observed in 8 and 17 cases, and myeloablative conditioning and reduced-intensity conditioning were reported in 21 and 4 cases, respectively. Hematopoietic function was restored in all 25 patients after stem cell infusion. Of the 25 patients who underwent transplantation, 16 developed acute graft-versus-host disease (aGVHD). The cumulative incidence rates of Ⅱ-Ⅳ and Ⅲ-Ⅳ aGVHD were (40.4±11.3) % and (4.8±4.6) %, respectively. Four patients experienced relapse after transplantation, the cumulative relapse rates at 1 and 2 years after transplantation were (4.0±3.9) % and (14.5±7.9) %, respectively. The 2-year overall survival rate after transplantation was (81.3±8.5) % and the disease-free survival rate was (77.1±9.1) %.Conclusion:This study reveals that the unique haplo-HDPSCT protocol achieves good clinical efficacy in Ph + ALL treatment.