ObjectiveTo investigate the ability of clinically isolated， Helicobacter pylori （H. pylori）-specific gene polymerase chain reaction （PCR）-positive gastric， vaginal， and fecal Candida to release H. pylori. MethodsResuscitate 4 strains of H. pylori -specific 16S rDNA and ureA gene PCR-positive Candida strains isolated in laboratory from clinical sources， including 1 strain of gastric Candida， 1 strain of fecal Candida， 2 strains of vaginal Candida and the standard Candida albicans strain ATCC10231 （Ca10231）. The presence of H. pylori-specific ureA in the 5 strains of Candida isolates was confirmed by PCR. The aforementioned strains of Candida and H.pylori were inoculated into urea medium and cultured in a constant temperature incubator at 37 ℃. The color change of the medium was observed daily. A change in the medium's color from yellow to red indicated the presence of urease activity. Then， the five strains of Candida and H. pylori were co-incubated with the magnetic beads coated with H. pylori antibodies respectively. Scanning electron microscopy （SEM） was employed to observe the presence of bacilli adsorbed on the surface of the magnetic beads. PCR was used to detect the presence of H.pylori-specific 16S rDNA and ureA genes on magnetic beads. ResultsThe PCR analysis of the ureA gene in the four Candida isolates was positive， whereas the Ca10231 strain tested negative. Upon culturing the four Candida isolates on urea medium， the medium color changed from yellow to red which was determined to be urease positive， while the medium containing Ca10231 remained unchanged， which was urease negative. SEM revealed that bacilli could be observed on the surface of magnetic beads co-incubated with the 4 strains of Candida of clinical origin and H.pylori isolate. Specifically， PCR testing of the magnetic beads co-incubated with one vaginal Candida， one gastric Candida and H.pylori isolate showed positive results for the 16S rDNA and ureA genes of H. pylori； however， the PCR tests for the two genes were negative for the magnetic beads co-incubated with the other two Candida isolate. ConclusionThis study demonstrates that H. pylori-specific genes Candida can release H. pylori.

Based on plasma lipidomics combined with machine learning approaches, this study aimed to screen molecular biomarkers for the diagnosis of early-stage lung cancer in elderly patients and to evaluate their diagnostic performance.

Irritable bowel syndrome （IBS） is a functional bowel disorder characterized primarily by abdominal pain and altered defecation habits. In recent years， traditional Chinese medicine （TCM） has made progress in multiple aspects of IBS research and treatment， including syndrome distribution， development of TCM formulas， clinical efficacy evaluation， external therapies， and psychosocial regulation. However， it still faces challenges such as over-reliance on symptomatic manifestations rather than biomarkers for diagnostic criteria， and the lack of high-quality evidence-based data supporting the efficacy of TCM formulas in treating IBS. This paper proposed that TCM diagnosis and treatment of IBS should adhere to the strategy of integrating the holistic concept with syndrome differentiation and treatment， combining TCM external therapies such as acupuncture， moxibustion and acupoint application）， and emphasizing individualized diagnosis and treatment for psychosomatic abnormalities. Future research should integrate multi-omics technologies， artificial intelligence and other methods to deepen the understanding of the pathogenesis of IBS and the mechanisms of TCM formulas， so as to promote the standardization and internationalization of TCM in the diagnosis and treatment of IBS.

AIM To investigate the effects of Polygonum cuspidatum and polydatin on lipid deposition in adipose tissue of high-fat diet-induced obese mice.METHODS Forty male C57BL/6J mice were randomly assigned to either a control group(10 mice)fed standard chow or a diet-induced obesity(DIO)group(30 mice)fed a high-fat diet for 8 weeks.The successful mouse models were randomly assigned to the model group,the polydatin group(250 mg/kg)and the P.cuspidatum group(4.5 g/kg),with 8 mice in each group,to resume their high-fat diet during the following 8 weeks corresponding drug administration by gavage.Weekly body weight measurements were recorded for all mice.Serum TG,TC and LDL levels were quantified post-treatment.Histopathological assessment of adipose tissue was performed using HE staining.The mRNA expressions of AMPK,SREBP-1c and FAS in adipose tissue were analyzed by RT-qPCR.The protein expressions of p-AMPK,SREBP-1c and FAS in adipose tissue was detected by Western blot.RESULTS Compared to the control group,the model group displayed significantly higher body weight,inguinal fat weight and epididymal fat weight(P＜0.05);elevated serum TG,TC and LDL levels(P＜0.05);markedly enlarged volumes of inguinal and epididymal adipocytes(P＜0.01);reduced p-AMPK protein expression in inguinal adipose tissue(P＜0.01);and upregulated mRNA and protein expressions of SREBP-1c and FAS(P＜0.05,P＜0.01).Compared to the model group,both the P.cuspidatum group and polygonin group exhibited significantly reduced body weight and inguinal fat weight(P＜0.05);decreased serum TG and TC levels(P＜0.05);reduced inguinal adipocyte size(P＜0.01);elevated p-AMPK protein expression in inguinal adipose tissue(P＜0.01);and downregulated mRNA and protein expressions of SREBP-1c and FAS(P＜0.05,P＜0.01).CONCLUSION P.cuspidatum and polydatin significantly increases p-AMPK expression while decreasing SREBP-1c and FAS levels in adipose tissue.This regulatory effect likely contributes to reduction of body weight in obese mice through suppression of lipogenesis.

Objective To investigate the diagnosis and treatment of multiple testicular Leydig cell tumors presenting with azoospermia.Methods Clinical data of a case of multiple testicular Leydig cell tumors presenting with azoospermia as well as re-lated article were reviewed.Results The patient visited the doctor due to"failure to conceive after 3 years of regular unprotect-ed sexual intercourse",and two consecutive semen analyses both indicated azoospermia.Testicular color Doppler ultrasound,en-hanced CT and pelvic MRI all suggested testicular space-occupying lesions.Preoperative evaluation suggested benign testicular tumors.Intraoperative frozen section pathology confirmed Leydig cell tumors.Microscopic testis-sparing tumor enucleation and microsurgical testicular sperm extraction(mTESE)were performed,with no sperm identified intraoperatively.The patient under-went successful tumor resection without complications.During the 12-month follow-up period,no tumor recurrence or metastasis was observed.Seminal volume increased compared to pre-operative levels,but azoospermia persisted.Conclusions Testicular Leydig cell tumor is a rare neoplasms originating from the gonadal stroma.Preoperative diagnosis is difficult.Radical orchiectomy is the primary treatment modality.However,testis-sparing tumor enucleation may be a safe and effective alternative for patients with bilateral testicular tumors.Tumor enucleation with testicular preservation is also a safe and effective choice for the patients with small-sized lesions or prepubertal status,whereas a long-term close follow-up is strictly implemented.

OBJECTIVE To investigate the differential expression of CXC chemokine receptor 1(CXCR1)in chronic rhinosinusitis(CRS)and its correlation with neutrophil infiltration.METHODS A total of 60 CRS patients with nasal polyps(CRSwNP group),30 CRS patients without nasal polyps(CRSsNP group),and 30 patients with deviated nasal septum(control group)were enrolled in this study.ELISA,immunohistochemistry,and reverse transcription polymerase chain reaction were employed to measure CXCR1 expression levels.Correlation analysis was conducted to evaluate the relationship between CXCR1 expression,neutrophil infiltration,and clinical symptom scores.RESULTS CXCR1 was highly expressed in both tissues and serum of CRSwNP patients.Serum CXCR1 levels showed positive correlations with peripheral blood neutrophil counts(r=0.363,P=0.004 4),neutrophil percentage(r=0.323,P=0.011 7),visual analog scale(VAS)score(r=0.328,P=0.010 5),Lund-Kennedy endoscopic score(r=0.331,P=0.009 9),and Lund-Mackay CT score(r=0.262,P=0.045 0).Tissue CXCR1 levels were positively correlated with tissue neutrophil counts(r=0.506,P=0.011 6)and percentage(r=0.564,P=0.004 1).CONCLUSION CXCR1 is highly expressed in CRSwNP patients,and its expression level is positively correlated with the degree of neutrophil infiltration and clinical symptom scores.Higher CXCR1 levels are associated with increased neutrophil migration in both serum and tissues,as well as more severe clinical symptoms.

Lentiviral vectors(LVs)are key gene delivery tools for integrating target genes into the host genome,but they may also pose risks of insertional mutagenesis.The vector copy number(VCN)in cells is critical for determining the safety of gene modification.However,the reliability and accuracy of its quantification process are influenced by multiple factors.Developing cell reference materials with specific vector copy numbers represents a viable approach to enhance the reliability and consistency of measurement results,enabling quality control of the quantification process and traceability of outcomes.However,the preparation of such reference materials faces challenges in cell sample design,preparation protocols,and advanced quantification techniques.In this study,T lymphocyte cell line Jurkat-based reference materials with LV gene copy numbers of 1 and 2 copy/cell were developed.A high-precision duplex digital polymerase chain reaction(dPCR)method was established to quantify the LV gene and endogenous genes simultaneously.Additionally,the results of dPCR were cross-validated through next-generation sequencing and flow cytometric analysis.Ultimately,confocal microscopy characterization results showed that the developed cell reference materials had intact morphology.The quantification result of VCN-1 was(1.07±0.11)copy/cell,and that of VCN-2 was(2.09±0.21)copy/cell.These cell reference materials demonstrated compliance with stability and homogeneity requirements,and could be applied for quality control throughout the VCN measurement workflow and metrological traceability,improving the accuracy,comparability,and validity of copy number measurements.

This study was aimed at investigating the presence of Helicobacter hepaticus(Hh)infection in patients with digestive tract diseases and evaluating Helicobacter pylori(Hp)infection status in patients with digestive tract cancers other than gastric cancer.Fecal samples were collected from 197 patients with digestive tract diseases at the Affiliated Cancer Hospital of Guizhou Medical Uni-versity and from 149 healthy volunteers residing in Guiyang.Hp stool antigen(HpSA)was detected with the colloidal gold method.Af-ter the extraction of fecal DNA,the Hp specific ureA gene and the Hh specific 16S rRNA gene were amplified via nested PCR,and the amplified products were subsequently confirmed through sequencing analysis.The study included 197 patients with digestive system diseases,comprising 135 cases of colorectal cancer,32 cases of chronic gastritis,22 cases of gastric cancer,5 cases of liver cancer,and 3 cases of cholangiocarcinoma.The detection rate of HpSA was 31.5%(62/197).HpSA was detected across all five disease catego-ries,and the highest detection rate was observed in patients with gastric cancer,at 50.0%(11/22),or colorectal cancer,at 24.4%(33/135).The positivity rate of Hp ureA gene PCR was 7.6%(15/197),and sequencing confirmed that the amplified products were in-deed Hp ureA gene fragments.Notably,the highest detection rate was observed in patients with colorectal cancer,at 8.9%(12/135).The positivity rate of Hh 16S rRNA gene PCR was 11.2%(22/197),and sequencing confirmed that the amplified products were in-deed Hh 16S rRNA gene fragments.Hh 16S rRNAgene presence was detected in patients with all five diseases,and the highest detec-tion rate was observed in patients with colorectal cancer,at 11.1%(15/135).Among 149 healthy volunteers,the detection rate of HpSA was 11.4%(17/149),only one case tested positive for the Hp ureA gene,and the Hh 16S rRNA gene was undetectable in all samples.In conclusion,Hh infection was detected in patients with digestive tract diseases.Beyond patients with gastric cancer,the prevalence of Hp infection was also notably high among patients with colorectal cancer,liver cancer,and cholangiocarcinoma.Further investigation is warranted to elucidate the roles of the two species of Helicobacter in the occurrence and progression of digestive tract cancers.

OBJECTIVE: To assess health equity in the Yangtze River region to improve understanding of the correlation between hand, foot, and mouth disease (HFMD) and socioeconomic factors. METHODS: From 2014-2016, data on HFMD incidence, population statistics, economic indicators, and meteorology from 26 cities along the Yangtze River were analyzed. A multi-city random-effects meta-analysis was performed to study the relationship between temperature and HFMD transmission, and health equity was assessed with respect to socio-economic impact. RESULTS: Over the study period, 919,458 HFMD cases were reported, with Shanghai (162,303) having the highest incidence and Tongling (5,513) having the lowest. Males were more commonly affected (male-to-female ratio, 1.49:1). The exposure-response relationship had an M-shaped curve, with two HFMD peaks occurring at 4 °C and 26 °C. The relative risk had two peaks at 1.30 °C (1.834, 95% CI: 1.204-2.794) and 31.4 °C (1.143, 95% CI: 0.901-1.451), forming an M shape, with the first peak higher than the second. The most significant impact of temperature on HFMD was observed between -2 °C and 18.1 °C. The concentration index (0.2463) indicated moderate concentration differences, whereas the Theil index (0.0418) showed low inequality in distribution. CONCLUSION The incidence of HFMD varied across cities, particularly with changes in temperature. Economically prosperous areas showed higher risks, indicating disparities. Targeted interventions in these areas are crucial for mitigating the risk of HFMD.
Female ; Humans ; Male ; China/epidemiology* ; Cities/epidemiology* ; Hand, Foot and Mouth Disease/transmission* ; Incidence ; Risk Factors ; Temperature