Objective To investigate the feasibility of the spatiotemporal filtering model in analysis of reported schistosomiasis cases, so as to provide insights into analysis of complicated data pertaining to schistosomiasis control. Methods Demographic and epidemiological data of reported schistosomiasis cases in Anhui Province from 1997 to 2010 were collected from Anhui Provincial Center for Disease Control and Prevention, and the annual prevalence of Schistosoma japonicum human infections was calculated. The meteorological data were captured from meteorological stations in counties (cities, districts) of Anhui Province where schistosomiasis cases were reported from 1997 to 2010 at the National Meteorological Information Center, including monthly average air temperature and precipitation. Meteorological data were interpolated using the inverse-distance weighting method, and the annual average air temperature and annual precipitation were calculated in each county (city, district). The centroid of the county (city, district) where schistosomiasis cases were reported was extracted using the software ArcGIS 10.0, and the Euclidean distance from each centroid to the Yangtze River was calculated as the distance between that county (city, district) and the Yangtze River. The global Moran’s I of the prevalence of S. japonicum human infections in Anhui Province for each year from 1997 to 2010 were calculated to analyze the spatial autocorrelation. A spatial weight matrix was constructed using Rook adjacency, and a first-order temporal weight matrix was built to quantify the relationship between disease changes over time. Subsequently, a spatiotemporal structure matrix was constructed. A negative binomial model was built based on the spatiotemporal structure matrix and data pertaining to reported schistosomiasis cases, and a linear model was created between the residual of the model and candidate set feature vectors to determine the optimal subset composition of the spatiotemporal filter through stepwise regression. Then, a spatio-temporal filtering model was constructed using the negative binomial model. Negative binomial models, Bayesian spatial models, and Bayesian spatiotemporal models were constructed and compared with the spatiotemporal filtering model to validate the performance of the spatiotemporal filtering model, and cross-validation was conducted for each model. The goodness of fit was evaluated using the deviance information criterion (DIC) and Watanabe-Akaike information criterion (WAIC), and the effectiveness of model validation was assessed using mean squared error (MSE), while the accuracy of assessment results was assessed using coefficients and their 95% confidence intervals (CI), and the computational efficiency was assessed based on the running time of the model. The four feature vectors with the largest Moran’s I values were selected to identify regions with autocorrelation through their schematic diagrams to investigate the differences in spatiotemporal patterns of specific regions. Results Of all models created, the spatiotemporal filtering model exhibited the highest goodness of fit (DIC = 3 240.70, WAIC = 3 257.80), the best model validation effectiveness (MSE = 42 617.52), and the runtime was 3.18 s, exhibiting the optimal performance. Across all modeling results, the distance from the Yangtze River showed a negative correlation with the number of reported schistosomiasis cases (coefficient values = −4.93 to −3.78, none of the 95% CIs included 0), and annual average air temperature or average precipitation posed no significant effects on numbers of reported schistosomiasis cases (both of the 95% CIs included 0). Schematic diagrams of feature vectors showed that the transmission of schistosomiasis might be associated with water systems in Anhui Province, and localized clustering patterns were primarily concentrated in the northern and western parts of schistosomiasis-endemic areas in the province. Conclusion The spatiotemporal filtering model is an effective spatiotemporal analysis characterized by simple modeling, user-friendly operation, accurate results and good flexibility, which may serve as an efficient alternative to conventional complex spatiotemporal models for data analysis in schistosomiasis researches.

S-methyl-L-cysteine sulfoxide (SMCO) is a non-protein sulfur-containing amino acid with a variety of functions. There are few reports on the enzymes catalyzing the biosynthesis of SMCO from S-methyl-L-cysteine (SMC). In this study, the flavin-containing monooxygenase gene derived from Schizosaccharomyces pombe (spfmo) was heterologously expressed in Escherichia coli BL21(DE3) and the enzymatic properties of the expressed protein were analyzed. The optimum catalytic conditions of the recombinant SpFMO were 30 ℃ and pH 8.0, under which the enzyme activity reached 72.77 U/g. An appropriate amount of Mg²⁺ improved the enzyme activity. The enzyme kinetic analysis showed that the K_m and k_cat/K_m of SpFMO on the substrate SMC were 23.89 μmol/L and 61.71 L/(min·mmol), respectively. Under the optimal reaction conditions, the yield of SMCO synthesized from SMC catalyzed by SpFMO was 12.31% within 9 h. This study provides reference for the enzymatic synthesis of SMCO.
Schizosaccharomyces/genetics* ; Escherichia coli/metabolism* ; Recombinant Proteins/metabolism* ; Cysteine/biosynthesis* ; Mixed Function Oxygenases/metabolism* ; Schizosaccharomyces pombe Proteins/metabolism* ; Oxygenases/metabolism* ; Kinetics

Objective To investigate the trends in areas of Oncomelania hupensis snail habitats in Anhui Province from 2004 to 2023, so as to provide insights into facilitating the progress of schistosomiasis elimination in the province. Methods Areas of O. hupensis snail habitats in Anhui Province from 2004 to 2023 were collected, and the trends in and mutations of O. hupensis snail habitats in Anhui Province, and the trends in O. hupensis snail habitats in different types of schistosomiasis-endemic foci and in different cities of Anhui Province from 2004 to 2023 were analyzed using Mann-Kendall test. Results The areas of O. hupensis snail habitats reduced by 12.62% in Anhui Province in 2023 relative to in 2004. Mann-Kendall trend test showed that the areas of O. hupensis snail habitats appeared a tendency towards a decline in Anhui Province from 2004 to 2023 (Z = −3.926, P < 0.001, β = −215.66), with an annual average reduction of 215.66 hm². Mann-Kendall mutation test showed that the areas of O. hupensis snail habitats appeared a tendency towards a decline in Anhui Province since 2015 (|Z| > U_0.05, P < 0.05). The areas of O. hupensis snail habitats appeared a tendency towards a decline in marshland and lake regions (Z = −4.899, P < 0.001, β = −260.13), and a tendency towards a rise in hilly regions of Anhui Province from 2004 to 2023 (Z = 2.758, P < 0.01, β = 44.55). Among 9 cities endemic for schistosomiasis in Anhui Province, the areas of O. hupensis snail habitats appeared a tendency towards a decline in 5 cities of Ma’anshan, Tongling, Anqing, Huangshan and Chizhou (Z = −4.056 to −2.109, all P values < 0.05, β = −92.12 to −0.45). The average constituent ratios of areas of O. hupensis snail habitats were 88.19% and 11.81% in marshland and lake regions and hilly regions of Anhui Province from 2004 to 2023, respectively, and the ratio of areas of O. hupensis snail habitats in marshland and lake regions to areas of snail habitats in hilly regions reduced from 9.23∶1 in 2004 to 5.74∶1 in 2023 in Anhui Province, with the ratio appearing a tendency towards a decline (Z = −4.477, P < 0.001, β = −0.16). Conclusions The areas of O. hupensis snail habitats appeared a tendency towards a decline in Anhui Province from 2004 to 2023, with a reduction in areas of O. hupensis snail habitats in marshland and lake regions and a rise in hilly regions. Targeted O. hupensis snail control interventions are required tailored to real snail status.

Objective:To summarize the clinical, pathological and molecular characteristics of various types of pediatric glioma, and to explore the differences in the morphology and clinical significance among various types of pediatric glioma.Methods:Based on the fifth edition of the World Health Organization classification of central nervous system tumors, this study classified or reclassified 111 pediatric gliomas that were diagnosed at Guangzhou Medical University Affiliated Women and Children′s Medical Center from January 2020 to June 2023. The clinical manifestations, imaging findings, histopathology, and molecular characteristics of these tumors were analyzed. Relevant literature was also reviewed.Results:The 111 patients with pediatric glioma included 56 males and 55 females, with the age ranging from 10 days to 13 years (average age, 5.5 years). Clinically, manifestations presented from 5 days to 8 years before the diagnosis, including epilepsy in 16 cases, increased intracranial pressure in 48 cases and neurological impairment in 66 cases. MRI examinations revealed tumor locations as supratentorial in 43 cases, infratentorial in 65 cases, and spinal cord in 3 cases. There were 73 cases presented with a solid mass and 38 cases with cystic-solid lesions. The largest tumor diameter ranged from 1.4 to 10.6 cm. Among the 111 pediatric gliomas, there were 6 cases of pediatric diffuse low-grade glioma (pDLGG), 63 cases of circumscribed astrocytoma glioma (CAG), and 42 cases of pediatric diffuse high-grade glioma (pDHGG). Patients with pDLGG and CAG were younger than those with pDHGG. The incidence of pDLGG and CAG was significantly lower in the midline of the infratentorial region compared to that of pDHGG. They were more likely to be completely resected surgically. The pDLGG and CAG group included 4 cases of pleomorphic xanthoastrocytoma, showing histological features of high-grade gliomas. Among the high-grade gliomas, 13 cases were diffuse midline gliomas and also showed histological features of low-grade glioma. Immunohistochemical studies of H3K27M, H3K27ME3, p53, ATRX, BRAF V600E, and Ki-67 showed significant differences between the pDLGG and CAG group versus the pDHGG group ( P<0.01). Molecular testing revealed that common molecular variations in the pDLGG and CAG group were KIAA1549-BRAF fusion and BRAF V600E mutation, while the pDHGG group frequently exhibited mutations in HIST1H3B and H3F3A genes, 1q amplification, and TP53 gene mutations. With integrated molecular testing, 2 pathological diagnoses were revised, and the pathological subtypes of 35.3% (12/34) of the pediatric gliomas that could not be reliably classified by histology were successfully classified. Conclusions:There are significant differences in clinical manifestations, pathological characteristics, molecular variations, and prognosis between the pDLGG, CAG and pDHGG groups. The integrated diagnosis combining histology and molecular features is of great importance for the accurate diagnosis and treatment of pediatric gliomas.

Objective:To investigate the current comorbidity status among hypertension, diabetes, and dyslipidemia in residents aged 35-75 years in Tianjin and to explore the main influencing factors to provide a scientific basis for the prevention and treatment of chronic disease comorbidity.Methods:From June 2019 to November 2023, 10 districts (Hedong, Hexi, Dongli, Beichen, Nankai, Xiqing, Wuqing, Baodi, Jizhou, and Binhai New District) in Tianjin were selected as the project sites. The community and natural village was used as the primary sampling unit, and each project site selected the screening sites by cluster random sampling method. Residents aged 35-75 who lived in the screening sites for 6 months and above were surveyed by questionnaire, physical examination, and biochemical tests. The chi-square test, analysis of variance, and multivariate unconditional logistic regression analysis were used for statistical analysis. Age-standardized prevalence was based on the data of the sixth national census.Results:A total of 146 832 participants were included in this study, including 61 994 males (42.22%) and 84 838 females (57.78%), with an age of (56.83±8.84) years. The number of people with only one disease was 55 485 (37.79%), the number of people with two diseases was 36 942 (25.16%), and the number of people with three diseases was 9 683 (6.59%). The prevalence of hypertension combined with dyslipidemia was the highest (17.23%), and the standardized prevalence were 14.44%. The prevalence rates of three diseases and hypertension combined with diabetes was 6.59% and 4.98%, respectively, and the standardized prevalence was 5.42% and 4.11%, respectively. The prevalence of diabetes combined with dyslipidemia was 2.95%, and the standardized prevalence was 2.45%. Multivariate unconditional logistic regression analysis showed that advanced age (65- 75 years old: OR=2.69, 95% CI: 2.28-3.18), overweight/obesity (overweight: OR=2.21, 95% CI: 2.02-2.41; obesity: OR=4.50, 95% CI: 4.03-5.02), daily smoking ( OR=1.96, 95% CI: 1.72-2.24), regular and heavy drinking ( OR=1.63, 95% CI: 1.18-2.27), family history of hypertension/diabetes/hyperlipidemia (family history of hypertension: OR=81.17, 95% CI: 74.68-88.22; family history of diabetes: OR=15.26, 95% CI: 13.71-16.99; family history of hyperlipidemia: OR=7.13, 95% CI: 5.92-8.59), tea drinking (occasional tea drinking group: OR=1.74, 95% CI: 1.52-2.00; frequent tea drinking group: OR=2.23, 95% CI: 1.92-2.59) were risk factors for the comorbidity of hypertension, diabetes and dyslipidemia (all P<0.05), while higher education level was a protective factor (senior high school/technical secondary school: OR=0.79, 95% CI: 0.72-0.86; college/bachelor's degree and above: OR=0.60, 95% CI: 0.53-0.68, all P<0.001). Conclusions:The comorbidity rate of hypertension, diabetes, and dyslipidemia is high in residents aged 35-75 years in Tianjin. It is necessary to strengthen the co-management of blood pressure, blood glucose, and blood lipid in key populations with old age, overweight/obesity, junior high school education or below, daily smoking, daily drinking, occasional or frequent tea drinking, and family history of hypertension/diabetes/dyslipidemia, and promote a healthy lifestyle.

Objective:To understand the interaction effect of general obesity, central obesity, and dyslipidemia on the risk of hypertension to provide scientific evidence for the early prevention and control of hypertension.Methods:From 2019 to 2023, 10 of the 16 districts in Tianjin were selected as project sites. A community and a natural village were selected as monitoring sites in each project site using a multi-stage cluster random sampling method. A questionnaire, physical, and biochemical examination were conducted on permanent residents aged 35-75 who had lived in the surveillance sites for more than half a year. The chi-square test univariate and multivariate logistic regression were used for statistical analysis. The multiplicative and additive models were used to calculate the interaction between general obesity and dyslipidemia, as well as central obesity and dyslipidemia, respectively.Results:A total of 177 160 subjects were included in the study, with an age of (56.44±8.62) years old. There were 29 535 (16.67%) patients with general obesity, 67 338 (38.01%) patients with central obesity, 64 906 (36.64%) patients with dyslipidemia, and 90 266 (50.95%) patients with hypertension. Multiplication interaction analysis results showed that, after adjusting for gender, age, culture level, marriage status, drinking, smoking, and diabetes, the multiplicative interactions between general obesity and dyslipidemia, and central obesity and dyslipidemia on hypertension were statistically significant (all P<0.001), and the adjusted OR and 95% CI were 2.57 (2.47-2.68) and 2.14 (2.08-2.20), respectively. The results of the additive interaction analysis demonstrated that after adjusting for relevant variables, the relative excess risk of interaction ( RERI), the attributable proportion of interaction ( API), and the synergy index ( SI) of the interaction between generalized obesity and dyslipidemia were 0.48 (95% CI: 0.33-0.63), 0.15 (95% CI: 0.11-0.19), and 1.27 (95% CI: 1.18-1.36), respectively; the RERI, API, and SI of the interaction between central obesity and dyslipidemia were 0.37 (95% CI: 0.28-0.46), 0.13 (95% CI: 0.10-0.16), and 1.25 (95% CI: 1.18-1.32), respectively. Conclusions:There might be multiplicative and additive interactions between general obesity, central obesity, and dyslipidemia on the risk of hypertension. Simultaneous control of BMI, waist circumference, and blood lipid levels may effectively reduce the risk of hypertension.

Objective:Synchronous mucinous metaplasia and neoplasia of the female genital tract (SMMN-FGT) occurring at multiple sites during the same period of time is extremely rare, and the aim of this study was to investigate the clinicopathologic features of SMMN-FGT and its relationship with prognosis.Methods:We retrospectively analyzed the clinicopathological features and follow-up records of 25 cases of SMMN-FGT diagnosed from January 2012 to October 2022 in the case database of Obstetrics and Gynecology Hospital of Fudan University.Results:The median age at onset was 46 years old, respectively. Clinical manifestations included irregular vaginal bleeding or drainage, pelvic pain, and ovarian cysts, etc. Germline genetic test confirmed Peutz-Jeghers syndrome (P-J syndrome) in two patients. All patients underwent surgery, and 13 patients had postoperative adjuvant radiotherapy and/or chemotherapy. The most frequent site of lesion was the cervix (21 cases), with 11, 10 and 16 cases occurring in the endometrium, fallopian tubes and ovaries, respectively. Six cases involved three sites simultaneously, and only one case had all four sites involved at the same time. Among the 9 cases with P53 mutation phenotype, 6 cases had gastric-type mucinous adenocarcinoma, 2 cases had lobular endocervical glandular hyperplasia, and 1 case had mucinous adenocarcinoma, whereas all the minimally deviated adenocarcinomas had wild phenotype of P53. The median follow-up time was 59 months, during which 3 cases died and 6 cases developed local recurrence or distant metastasis. According to our analysis, postoperative recurrence or metastasis was correlated with the FIGO stage of the disease, the number of lesion sites and the severe degree of the uterine lesions ( P＜0.05). Conclusions:SMMN-FGT has a relatively good clinical prognosis, and even advanced patients can benefit from surgery and adjuvant therapy. In young patients, the ovaries may be preserved if no evidence of lesions are seen after adequate evaluation. In SMMN-FGT, gastric-type mucinous adenocarcinoma occurring in the cervix may have a better prognosis than gastric-type mucinous adenocarcinoma of the cervix alone, so the accurate diagnosis of SMMN-FGT is critical for clinical management.

【Objective】 To explore the effectiveness and safety of polyglycolic acid (PGA) and hydroxypropyl methylcellulose (HPMC) composite materials in distal pancreatectomy postoperative suturing. 【Methods】 We selected 36 healthy adult beagles and divided them randomly into observation group and control group, with 18 distal pancreatectomy surgeries in each group. The observation group used PGA+HPMC composite materials for incision reinforcement while the control group used NEOVEIL for incision reinforcement. 3 days before surgery, 3 days after surgery, and before dissection, blood routine tests were performed on each group of experimental dogs. Observation periods of 2-week, 4-week and 8-week were set, and six animals at each observation point were evaluated for histological examination of heart, liver, spleen, lung, and kidney tissues, hard tissue slice pathological diagnosis, and safety evaluation. 【Results】 There was no significant difference between the observation group and the control group in the preoperative blood routine test. Repeated measures ANOVA results showed differences in the mean values of white blood cell count (WBC) ( F=14.875, P=0.001), mean corpuscular hemoglobin concentration (MCHC) (F=5.049,P=0.009), neutrophil percentage (Neu%) (F=4.794, P=0.011), red blood cell count (RBC) (F=6.591, P=0.002), hemoglobin (HGB) (F=8.154, P=0.001), hematocrit (HCT) (F=5.281, P=0.007), platelet count (PLT) (F=6.560, P=0.014), red blood cell distribution width coefficient of variation (RDW-CV) (F=33.950, P=0.039), or lymphocyte percentage (Lym%) (F=3.299, P=0.043) at different time points. However, the observation group and the control group did not differ, and the interaction between time and group had no significant effect on the above indicators, suggesting that both groups of dogs had inflammatory response or surgical stress. For the 8-week postoperative hard tissue pathological section score, there was no significant difference between the observation group and the control group in the inflammation and necrosis related score, fibrosis, repair or other related scores and total score (P>0.05). In the dissection at 8 weeks after surgery, no obvious damage to the heart, liver, spleen, lung, kidney, or other organs was found in both groups, nor was there any residual suture material, pancreatic fistula, or pancreatitis, indicating that the suture materials in both groups had been completely absorbed and metabolized, and the incision healed well without causing adverse effects on the visceral organs. 【Conclusion】 PGA and HPMC are effective and safe postoperative suture materials, with good biodegradability, biocompatibility, suture strength, and wound healing quality. They can be comparable to traditional absorbable reinforcement materials in distal pancreatectomy postoperative suturing, thus providing scientific basis for their clinical application.

Objective:To explore the relationship between depressive symptoms and filial piety in adult-child caregivers of disabled elderly,and the mediating effect of mutuality on the relationship.Methods:Totally 383 adult-child caregivers were assessed with the Center for Epidemiological Studies Depression Scale(CES-D),Dual Filial Piety Scale(DFPS)and Mutuality Scale(MS).The SPSS macro program Process was used to test the mediation model.Results:The CES-D scores were negatively correlated with the reciprocal filial piety scores and the MS scores(r=-0.49,-0.48,Ps＜0.01)and positively correlated with the authoritarian filial piety scores(r=0.37,P＜0.01).The MS scores were positively correlated with the reciprocal filial piety scores(r=0.76,P＜0.01),and negatively correlated with the authoritarian filial piety scores(r=-0.84,P＜0.01).Reciprocal filial piety scores were negatively associated with CES-D scores(β=-0.67).In addition,MS scores partly mediated the relationship between reciprocal filial piety scores and CES-D scores,the value of mediating effect was 22.89％.Conclusion:The depressive symptoms are correlated with filial piety and mutuality among adult-child caregivers of disabled eld-erly.

OBJECTIVE To investigate the distribution and regulation of G-quadruplex(G4)in enzymes related to glycolysis.METHODS The sequences of the transcription start site(TSS)region upstream of 1500 bp to the 5'-Untranslated region in 200 enzymes and their subtypes in glycolysis were selected for bioinformatics analysis.Related enzymes in glycolysis containing putative G-quadru-plex-forming sequences(PQSs)were identified.Circular Dichroism and Native polyacrylamide gel elec-trophoresis were used to verify the formation of G4.The ExonucleaseⅠhydrolysis assay was used to validate the stability of the formed G4 under 0,0.5,2,8,16,and 32 min.A reporter gene plasmid was constructed by inserting specific fragments of the related enzymes before the luciferase expression sequence.The dual-luciferase reporter assay system validate the expression level of luciferase to assess the impact of G4 on promoter activity.Real-time quantitative PCR was performed to validate the transcriptional regulatory role of G4 by detecting the mRNA levels of luciferase.RESULTS ①Bioin-formatics analysis showed that out of the 200 glycolysis-related enzymes,12 contained PQSs.Based on the analysis of the length and structure of PQSs,aldolase A(ALDOA)and phosphoglycerate mutase 2(PGAM2)proved to be able to form stable G4.② ALDOA and PGAM2 had the maximum positive absorption peak at 260 nm and maximum negative absorption peak at 240 nm.Both of them could form a G4 at the same time.③After digestion with ExonucleaseⅠ,ALDOA and PGAM2 showed no significant hydrolysis and demonstrated the stability of G4 structures.However,both of them could be gradually hydrolyzed after mutations in their PQSs.④ After PQS mutation of ALDOA and PGAM2,the mRNA levels and expression of downstream luciferase of ALDOA were significantly increased(P<0.05,P<0.01),while PGAM2 was significantly decreased(P<0.05,P<0.01).CONCLUSION The gene sequences of glycolysis-related enzymes and their subtypes contain a large number of PQSs.ALDOA and PGAM2 can form stable G4 and perform transcriptional regulatory functions.