Objective To explore the association of the TSLP gene polymorphisms at rs3806932,rs11466741 and rs2289278 loci with childhood asthma and serum TSLP levels,and to analyze the effects of gene-environment interactions on asthma risk in children.Methods A total of 145 children with asthma and 108 healthy controls were included.Genotyping was performed using KASP and MassARRAY SNP technologies,and serum TSLP levels were measured by ELISA.Differences in allele and genotype frequencies between the two groups were analyzed,along with the impact of genetic models on asthma risk.Differences in serum TSLP levels across groups were compared.Linkage disequilibrium and haplotype analysis were performed using Haploview 4.2,and GMDR 0.9 software was used to assess gene-environment interactions.Results No significant differences were found in the allele and genotype frequencies of the three TSLP gene loci between the two groups(P＞0.05).Under the co-dominant model,children with the AG genotype at the rs3806932 locus had 1.750 times the risk of developing asthma compared to those with the AA genotype(95％CI:1.018-3.010,P=0.043).Under co-dominant and overdominant models,children with the CT genotype at the rs11466741 locus had 1.705 times the asthma risk compared to those with the CC genotype(95％CI:1.006-2.891,P=0.048),and 1.698 times the risk compared to those with the CC-TT genotype(95％CI:1.019-2.827,P=0.041).Serum TSLP levels were significantly higher in asthma patients with the CT genotype than those with the CC genotype at the rs11466741 locus(P=0.032).Serum TSLP levels were higher in the asthma group with allergic rhinitis(AR)compared to the group without AR(P＜0.01).No significant differences were observed in the distribution of haplotypes frequencies(AC,GT,GC)between the two groups(P＞0.05).GMDR analysis showed that the highest asthma risk was observed in children with heterozygous genotypes(CT,AG)at both rs11466741 and rs2289278,or those with the CT genotype at rs11466741,a history of passive smoking,and a cesarean section delivery(P＜0.05).Conclusion Polymorphisms in the TSLP gene at rs3806932 and rs11466741 are associated with an increased risk of childhood asthma.Variants at the rs11466741 locus affect serum TSLP levels in children with asthma.Asthma combined with AR leads to elevation of serum TSLP levels.The interaction between rs11466741 and rs2289278,along with environmental factors(passive smoking and cesarean section),contributes to the increase of asthma risk in children.

Objective:To clarify the effect of methotrexate on blood uric acid levels and the incidence of hyperuricemia in patients with rheumatic and musculoskeletal diseases (RMDs).Methods:The clinical data were collected from 349 patients with RMDs who took methotrexate for more than 52 weeks and 429 patients with RMDs who did not take methotrexate, who were treated at Anqing Medical Center of Auhui Medical University from June 1, 2022 to June 30, 2024, to compare the differences in serum uric acid concentration and the incidence of hyperuricemia before and after 24 weeks of methotrexate administration in the two groups of patients with RMDs. The changes in serum uric acid concentration and serum creatinine value in the MTX na?ve patients who had taking MTX for 0, 24 and 52 weeks were compared. The relationship between serum uric acid concentration and methotrexate dosage was analyzed. Measurement data were compared using t-test or ANOVA, repeated measures analysis of variance, and count data were compared using χ2 test. Results:①At week 0, there was no significant difference in serum uric acid concentration [(300±63)μmol/L vs. (306±64)μmol/L, t=-1.416, P=0.157] and the incidence of hyperuricemia [9.3%(40/429) vs. 10.3%(36/349) , χ2=0.215, P=0.643] between the two groups. At week24, the serum uric acid concentration (307±70)μmol/L vs. (246±89)μmol/L was statistically significantly ( t=10.909, P<0.001) different. The incidence of hyperuricemia (11.0%, 47/429) vs. (4.6%, 16/349), was statistically significantly different ( χ2=10.497, P<0.001). There was a statistically significant difference in serum uric acid concentration between week 0 and week 24 in the methotrexate group ( t=10.237, P<0.001), and there was a statistically significant difference in the incidence of hyperuricemia ( χ2=8.312, P=0.004). ②The overall serum uric acid concentrations at week 0, weeks 24, and weeks 52 were (306±64)μmol/L, (246±89)μmol/L, and (247±66)μmol/L, respectively. The difference in overall serum uric acid concentration was statistically significant ( F= 29.506, P<0.001). There was no significant difference in serum uric acid concentration between weeks 24 and 52 ( P=1.000). There were significant differences in serum creatinine levels between weeks 0, 24 and 52 ( P<0.001). There was no significant difference in serum creatinine levels between weeks 0 ,52, weeks 24 and 52 ( P=0.077, P=1.000). There were statistically significant differences in the overall serum uric acid concentration and serum creatinine value at weeks 0, 24 and 52 of medication ( P<0.001).③ There was no significant difference in serum uric acid concentration before and after taking hydroxychloroquine, cyclosporine, tripterygium wilfordii, mycophenolate mofetil, tofacitinib, etanercept and adalimumab alone for weeks 0 and 24(all P>0.05). ④There was no significant difference in serum uric acid concentration between patients taking different doses of methotrexate (7.5 mg once weekly, 10 mg once weekly, 12.5 mg once weekly, 15 mg once weekly) at weeks 0 and 24 weeks(all P>0.05). Conclusion:MTX, as an anti-rheumatic drug, reduces the serum uric acid level and the incidence of hyperuricemia in patients with RMDs during the treatment.

Objective To explore the association of the TSLP gene polymorphisms at rs3806932,rs11466741 and rs2289278 loci with childhood asthma and serum TSLP levels,and to analyze the effects of gene-environment interactions on asthma risk in children.Methods A total of 145 children with asthma and 108 healthy controls were included.Genotyping was performed using KASP and MassARRAY SNP technologies,and serum TSLP levels were measured by ELISA.Differences in allele and genotype frequencies between the two groups were analyzed,along with the impact of genetic models on asthma risk.Differences in serum TSLP levels across groups were compared.Linkage disequilibrium and haplotype analysis were performed using Haploview 4.2,and GMDR 0.9 software was used to assess gene-environment interactions.Results No significant differences were found in the allele and genotype frequencies of the three TSLP gene loci between the two groups(P＞0.05).Under the co-dominant model,children with the AG genotype at the rs3806932 locus had 1.750 times the risk of developing asthma compared to those with the AA genotype(95％CI:1.018-3.010,P=0.043).Under co-dominant and overdominant models,children with the CT genotype at the rs11466741 locus had 1.705 times the asthma risk compared to those with the CC genotype(95％CI:1.006-2.891,P=0.048),and 1.698 times the risk compared to those with the CC-TT genotype(95％CI:1.019-2.827,P=0.041).Serum TSLP levels were significantly higher in asthma patients with the CT genotype than those with the CC genotype at the rs11466741 locus(P=0.032).Serum TSLP levels were higher in the asthma group with allergic rhinitis(AR)compared to the group without AR(P＜0.01).No significant differences were observed in the distribution of haplotypes frequencies(AC,GT,GC)between the two groups(P＞0.05).GMDR analysis showed that the highest asthma risk was observed in children with heterozygous genotypes(CT,AG)at both rs11466741 and rs2289278,or those with the CT genotype at rs11466741,a history of passive smoking,and a cesarean section delivery(P＜0.05).Conclusion Polymorphisms in the TSLP gene at rs3806932 and rs11466741 are associated with an increased risk of childhood asthma.Variants at the rs11466741 locus affect serum TSLP levels in children with asthma.Asthma combined with AR leads to elevation of serum TSLP levels.The interaction between rs11466741 and rs2289278,along with environmental factors(passive smoking and cesarean section),contributes to the increase of asthma risk in children.

OBJECTIVE To retrospectively analyze the drug resistance characteristics of the patients with multidrug-resistant organisms(MDROs)infections who were hospitalized from 2022 to 2023 and observe the effect of multi-disciplinary teamwork(MDT)mode so as to provide scientific bases for prevention and control of MDROs infec-tions and hospital-associated infections.METHODS A total of 639 patients with MDROs infection who were hospi-talized in Jianyang People's Hospital from Jan.2022 to Dec.2023 were recruited as the research subjects.The clinical data were collected from the patients,the drug resistance characteristics of bacteria were analyzed.The effects of MDT and pharmacological supervision on treatment of the patients with MDROs infection were observed and compared.RESULTS The methicillin-resistant Staphylococcus aureus(MRSA)(359 strains,56.18％)was dominant among the pathogens isolated from the 639 patients with MDROs infections,followed by the carbapen-em-resistant Klebsiella pneumoniae(CRKP)(96 strains,15.02％)and carbapenem-resistant Acinetobacter bau-mannii(82 strains,12.83％).Of the patients with MDROs infection,150(23.47％)were from critical care medicine department,94(14.71％)from pediatrics department,and 82(12.83％)from general surgery de-partment.The result of drug susceptibility test showed that the S.aureus strains were susceptible to linezolid,daptomycin,vancomycin and tigecycline;most of the gram-negative bacteria were susceptible to carbapenems,while the A.baumannii strains were highly resistant to the commonly used antibiotics.The total isolation rate of MDROs and the case-time infection rate of MDROs infections were 14.32％and 0.05％,respectively,after MDT and pharmacological supervision were carried out,lower than those before carried out;the effective treatment rate of the patients with MDROs was 76.47％after MDT and pharmacological supervision were carried out,higher than that before they were carried out,and there were significant differences(all P＜0.05).CONCLUSION MDT and pharmacological supervision may improve the curative effect of the patients with MDROs infection and reduce the isolation rate of MDROs as well as the incidence of hospital-associated infections.

Mass spectrometry(MS)is one of the core technology in the field of clinical laboratory,which has a series of advantages include high sensitivity,high specificity,and the simultaneous analysis of multi-components.It shows great potential in metabolite detection,proteomic analysis,etc.,which can provide new pathways for early diagnosis and personalized treatment of complex diseases.In recent years,the research of MS technique appears rapid development trend in the field of clinical laboratory.This paper systematically combed the application status and research progress of MS techniques in clinical laboratory,which include mass spectrometry imaging(MSI),matrix-assisted laser desorption/ionization time-of-flight mass spectrometry(MALDI-TOF MS),inductively coupled plasma mass spectrometry(ICP-MS),cytometry by time-of-flight(CyTOF),and liquid chromatography-tandem mass spectrometry(LC-MS/MS).It focused on their practical applications in disease diagnosis,efficacy assessment,and prognosis judgment,and it anatomized the faced bottlenecks and problems of current technique.Based on the frontline technological trends,it explore the innovative directions of integrating MS technique with emerging bioinformatics,microfluidics,etc.,so as to provide theoretical basis and practical reference for promoting the standardized and intelligent development of MS technique in clinical laboratory,and help its wide application in clinical diagnosis and treatment.

OBJECTIVE To retrospectively analyze the drug resistance characteristics of the patients with multidrug-resistant organisms(MDROs)infections who were hospitalized from 2022 to 2023 and observe the effect of multi-disciplinary teamwork(MDT)mode so as to provide scientific bases for prevention and control of MDROs infec-tions and hospital-associated infections.METHODS A total of 639 patients with MDROs infection who were hospi-talized in Jianyang People's Hospital from Jan.2022 to Dec.2023 were recruited as the research subjects.The clinical data were collected from the patients,the drug resistance characteristics of bacteria were analyzed.The effects of MDT and pharmacological supervision on treatment of the patients with MDROs infection were observed and compared.RESULTS The methicillin-resistant Staphylococcus aureus(MRSA)(359 strains,56.18％)was dominant among the pathogens isolated from the 639 patients with MDROs infections,followed by the carbapen-em-resistant Klebsiella pneumoniae(CRKP)(96 strains,15.02％)and carbapenem-resistant Acinetobacter bau-mannii(82 strains,12.83％).Of the patients with MDROs infection,150(23.47％)were from critical care medicine department,94(14.71％)from pediatrics department,and 82(12.83％)from general surgery de-partment.The result of drug susceptibility test showed that the S.aureus strains were susceptible to linezolid,daptomycin,vancomycin and tigecycline;most of the gram-negative bacteria were susceptible to carbapenems,while the A.baumannii strains were highly resistant to the commonly used antibiotics.The total isolation rate of MDROs and the case-time infection rate of MDROs infections were 14.32％and 0.05％,respectively,after MDT and pharmacological supervision were carried out,lower than those before carried out;the effective treatment rate of the patients with MDROs was 76.47％after MDT and pharmacological supervision were carried out,higher than that before they were carried out,and there were significant differences(all P＜0.05).CONCLUSION MDT and pharmacological supervision may improve the curative effect of the patients with MDROs infection and reduce the isolation rate of MDROs as well as the incidence of hospital-associated infections.

Mass spectrometry(MS)is one of the core technology in the field of clinical laboratory,which has a series of advantages include high sensitivity,high specificity,and the simultaneous analysis of multi-components.It shows great potential in metabolite detection,proteomic analysis,etc.,which can provide new pathways for early diagnosis and personalized treatment of complex diseases.In recent years,the research of MS technique appears rapid development trend in the field of clinical laboratory.This paper systematically combed the application status and research progress of MS techniques in clinical laboratory,which include mass spectrometry imaging(MSI),matrix-assisted laser desorption/ionization time-of-flight mass spectrometry(MALDI-TOF MS),inductively coupled plasma mass spectrometry(ICP-MS),cytometry by time-of-flight(CyTOF),and liquid chromatography-tandem mass spectrometry(LC-MS/MS).It focused on their practical applications in disease diagnosis,efficacy assessment,and prognosis judgment,and it anatomized the faced bottlenecks and problems of current technique.Based on the frontline technological trends,it explore the innovative directions of integrating MS technique with emerging bioinformatics,microfluidics,etc.,so as to provide theoretical basis and practical reference for promoting the standardized and intelligent development of MS technique in clinical laboratory,and help its wide application in clinical diagnosis and treatment.

Objective:To clarify the effect of methotrexate on blood uric acid levels and the incidence of hyperuricemia in patients with rheumatic and musculoskeletal diseases (RMDs).Methods:The clinical data were collected from 349 patients with RMDs who took methotrexate for more than 52 weeks and 429 patients with RMDs who did not take methotrexate, who were treated at Anqing Medical Center of Auhui Medical University from June 1, 2022 to June 30, 2024, to compare the differences in serum uric acid concentration and the incidence of hyperuricemia before and after 24 weeks of methotrexate administration in the two groups of patients with RMDs. The changes in serum uric acid concentration and serum creatinine value in the MTX na?ve patients who had taking MTX for 0, 24 and 52 weeks were compared. The relationship between serum uric acid concentration and methotrexate dosage was analyzed. Measurement data were compared using t-test or ANOVA, repeated measures analysis of variance, and count data were compared using χ2 test. Results:①At week 0, there was no significant difference in serum uric acid concentration [(300±63)μmol/L vs. (306±64)μmol/L, t=-1.416, P=0.157] and the incidence of hyperuricemia [9.3%(40/429) vs. 10.3%(36/349) , χ2=0.215, P=0.643] between the two groups. At week24, the serum uric acid concentration (307±70)μmol/L vs. (246±89)μmol/L was statistically significantly ( t=10.909, P<0.001) different. The incidence of hyperuricemia (11.0%, 47/429) vs. (4.6%, 16/349), was statistically significantly different ( χ2=10.497, P<0.001). There was a statistically significant difference in serum uric acid concentration between week 0 and week 24 in the methotrexate group ( t=10.237, P<0.001), and there was a statistically significant difference in the incidence of hyperuricemia ( χ2=8.312, P=0.004). ②The overall serum uric acid concentrations at week 0, weeks 24, and weeks 52 were (306±64)μmol/L, (246±89)μmol/L, and (247±66)μmol/L, respectively. The difference in overall serum uric acid concentration was statistically significant ( F= 29.506, P<0.001). There was no significant difference in serum uric acid concentration between weeks 24 and 52 ( P=1.000). There were significant differences in serum creatinine levels between weeks 0, 24 and 52 ( P<0.001). There was no significant difference in serum creatinine levels between weeks 0 ,52, weeks 24 and 52 ( P=0.077, P=1.000). There were statistically significant differences in the overall serum uric acid concentration and serum creatinine value at weeks 0, 24 and 52 of medication ( P<0.001).③ There was no significant difference in serum uric acid concentration before and after taking hydroxychloroquine, cyclosporine, tripterygium wilfordii, mycophenolate mofetil, tofacitinib, etanercept and adalimumab alone for weeks 0 and 24(all P>0.05). ④There was no significant difference in serum uric acid concentration between patients taking different doses of methotrexate (7.5 mg once weekly, 10 mg once weekly, 12.5 mg once weekly, 15 mg once weekly) at weeks 0 and 24 weeks(all P>0.05). Conclusion:MTX, as an anti-rheumatic drug, reduces the serum uric acid level and the incidence of hyperuricemia in patients with RMDs during the treatment.

OBJECTIVE To study the effect of fluoropezil on embryo-fetal developmental toxicity and toxicokinetics in rabbits,and provide reference for clinical medication.METHODS According to the sequence of pregnancy,pregnant rabbits were divided into five groups:vehicle control group(1%hydroxy-propyl methylcellulose+1.5%polyethylene glycol 400 aqueous solution),positive control group(cyclo-phosphamide 18 mg·kg-1),and fluoropezil(3.6,9.0 and 22.5 mg·kg-1)groups.The vehicle control group and the fluoropezil groups were ig administrated on the 6th to 18th day of gestation(GD6-18)while the positive control group was ig given cyclophosphamide on GD6-20.The pregnant rabbits were sacri-ficed on GD28,and the embryo-fetal development was detected.Sex hormone levels of pregnant rabbits on GD5,GD18 and GD28 were detected by ELISA method.Blood samples with toxokinetics were collected for concomitant toxic generation at the first and last administration,and drug concentrations in fetal,placenta and amniotic fluid were detected with liquid chromatography tandem mass spectrometry(LC-MS/MS).RESULTS Fluoropezil 3.6,9.0 and 22.5 mg·kg-1 had no significant effect on body mass,mass gain,food consumption,pregnancy outcomes,fetal appearance,viscera,skeletal and physical growth and development of pregnant rabbits.Only on GD18 or GD28,the levels of follicle stimulating hormone,estra-diol and progesterone in each dose group fluctuated to some extent.The combined toxokinetics results indicated that fluoropezil could cross the placental barrier of the rabbits,but did not accumulate in preg-nant rabbits or fetuses.Fetal mass,crown-rump length and uterus mass in the cyclophosphamide group were lower than those in the vehicle control group.The appearance and bone of the cyclophos-phamide group were positive.CONCLUSION The no observed adverse effect level(NOAEL)of fluoro-pezil toxicity on rabbit embryo-fetal development is 22.5 mg·kg-1,which is 125 times of the effective dose.At the dosage level of 22.5 mg·kg-1,Cmax is 1093 μg·L-1,and AUC(0-24 h)6650 μg·h·L-1 on GD18.

Objective:To analyse the clinical significance of selective single embryo transfer by time-lapse mo-nitoring(TLM)or conventional morphology assessment(CMA)in vitro fertilization/intracytoplasmic sperm in-jection and embryo transfer(IVF/ICSI-ET),and to initially explore the predictive value of Raman spectral analy-sis of embryo culture medium for clinical pregnancy rate.Methods:The study is a prospective randomized con-trolled clinical trial.We assigned 139 patients treated with IVF/ICSI-ET in Reproductive and Genetics Center of Suzhou Municipal Hospital from April 2019 to July 2020,which were randomly assigned to either the CMA or the TLM group.We performed selective single-embryo transfer(fresh cycle and FET)after selecting the optimal em-bryos with TLM or CMA respectively.If the patient's first embryo transfer was unsuccessful,a second one would be performed to compare the differences in the cumulative live birth rate of embryo transfer and other pregnancy outcomes between the two groups.Meanwhile,we collected 15 μl of embryo culture medium at day 3 after IVF/ISCI fertilization for Raman spectroscopy analysis.Results:There were no differences in cumulative live birth,cu-mulative clinical pregnancy,cumulative premature birth,cumulative early spontaneous abortion,cumulative ectopic pregnancy and LGA or SGA between TLM and CMA groups(P＞0.05).The Neonatal sex ratio in the TLM group was lower than that in the CMA group,but the difference was not significant(P＞0.05).Raman spectros-copy analysis of embryo culture medium predicted the clinical pregnancy rate with 67.21％accuracy.Conclu-sions:In young women with a good ovarian reserve,the advantage of using TLM to evaluate embryos is not obvi-ous,so we should remain vigilant that embryo selection based on morphokinetic parameters may affect the sex ratio.Raman spectroscopic analysis of embryo culture medium is not yet able to effectively predict the planting ability of embryos.