Objective To investigate the incidence and risk factors of human papillomavirus type 16 (HPV16) infec?tion among women through health screenings in Tianjin urban area. Methods A total of 2 000 women from Tianjin urban area were recruited for this study, and potential risk factors were investigated by questionnaire as well as by collecting cervi?cal exfoliated cells from the participants. HPV type was examined using polymerase chain reaction and pyrosequencing tech?nology, then the risk factors of HPV16 infection were examined by chi square test and the multiple factor logistic regression analysis. Results Among those 2 000 women who received health screenings, a total of 271 cases were HPV positive (13.55%). HPV16 accounts for the most common human papillomavirus types (39.5%, 107/271) while HPV58 account for 15.13%(41/271)and HPV18 account for 9.59% (26/271). Factors related to HPV16 infection were investigated include smoking history, initial age of sex (>25 years old or not) , number of pregnancies (≥2 or not), number of sexual partners (≥2 or not) and contraception measures (condom or other ways) with χ2=6.268,8.540,4.951,7.123,6.053,5.019, respectively. (P < 0.05). Age, alcohol intake, education level and previous gynecologial examination did not differ significantly among HPV16 positive patients compared to those with negative HPV. Multiple factor Logistic regression model analysis showed that the independent factors were smoking history and initial age for sex(≤25 years old)(P<0.05). Conclusion HPV16 is the most common type of cervical infection among women in Tianjin urban area. Changing inappropriate sexual behavior and smoking cessation are effective measures to prevent HPV16 infection and reduce incidence of cervical cancer.

Objective:To detect anti-LKM-1 antibody with enzyme-linked immunosorbent assay (ELISA) using a recombinant fusion peptide which comprises 257-351 amino acid fragment of CYP2D6 as antigen.Methods:We obtained CYP2D6 cDNA fragment by means of PCR,using total liver cDNA library as the template.The PCR products were ligated into pEGH expressing vector to construct the recombinant expressing vector with high efficiency in Saccharomyces Cerevisiae Y258.The positive clones were identified by PCR reaction and then induced by galactose.Glutathione-Sepharose 4B was used for purification of recombinant CYP2D6 protein.After affinity purification,the antigenicity was identified with Western blot.Serum samples from 26 patients who were positive for anti-LKM-1 antibody,20 patients with other connective tissue disorder(CTD) and 30 normal controls were retrospectively tested with ELISA.Results:A fusion peptide was expressed and purified.The antigenicity was confirmed with Western blot using standard of anti-LKM-1 antibody-positive serum.Of the 26 serum samples which are positive for anti-LKM-1 antibody,5 of 6 samples positive for anti-HCV antibody also recognized the recombinant fusion peptide with ELISA,only one serum sample which was showed positive anti-HCV antibody displayed a negative result in ELISA assay.All other 20 patients with positiv anti-LKM-1 antibody were shown positive in ELISA assay using this recombinant peptide.All the serum samples from patients with other CTD were negative in ELISA assay.Conclusion:The recombinant antigen fragment contains major epitope regions in natural CYP2D6 antigen.Detection of anti-LKM-1 antibody with ELISA using the recombinant peptide can improve the sensitivity and has a potential role in determining its clinical association.

Objective:To detect the oipA gene of Helicobacter pylori(Hp)strains NCTC11637 and Hp1,Hp2 isolated from clinical biopsies,analyze their nucleotide sequences and make a homologous comparison of nucleotide with Hp 26695.Methods:The oipA gene was detected with PCR in Helicobacter pylori(Hp)strains NCTC11637 and Hp1,Hp2 isolated from clinical gastric biopsies after routine culture.Then PCR products were sent out for nucleotide sequence analysis and compared with Hp 26695.Results:The sequence of the aim gene was obtained in NCTC11637 and Hp1,Hp2 and was made a homologous comparison of nucleotide with 26695.The number of mutation of NCTC11637,Hp1 and Hp2 and was 48,48,50 respectively.The identity was 94%,94% and 94% respectively,while the strain Hp1 was most identical to 11637 as much as 100%.The homology of Hp2 and 11637 was 97%.Conclusion:Hp1,Hp2 and NCTC11637 expresse gene oipA,but the sequences of gene oipA of different strains are distinct.

Objective To study the expression and relationship among CD44V6,p16 and PCNA in gastric mucosal lesions with HP infection. Methods Expression of CD44V6,p16 and PCNA were investigated in 114 gastric mucosal lesions by use of immunohistochemistry.HP was examined by both Warthin -Starry method and RUT. Ruselts Comparing HP positive group (P

Objective: To study the immunologic protection of selenium on gastric mucosal lesions of BALB/C mice infected by Helicobacter pylori (HP). Method:The model was built by ig HP in BALB/C mice and then effects of selenium on gastric mucosal lesions and the CD4、CD8 cells were observed.HP was examined by both of bacterial culture and rapid usease test (RUT). Results:1.0 ?g/g bw selenium could effectively prevent gastric mucosal damages induced by HP. HP could decreased the ratio of CD4 to CD8,but selenium could enhance the activity of CD4 cell and increase the ratio. Conclusion: Se can effectively prevent the gastric mucosal damages of mice infected by HP. One of the mechanisms is that Se can enhance the CD4 activity and increase CD4 /CD8.

Objective To analyze sleep quality in patients with primary angle-closure glaucoma and its relationship with eyesight, which would provide the basic data for improvement of clinical therapy of primary angle-closure glaucoma.Methods Sleep quality of 49 patients with primary angle-closure glaucoma was evaluated by Pittsburgh Sleep Quality Index(PSQ I) and the relationship between sleep quality and eyesight was analyzed.Results 93.9% primary angle-closure glaucoma patients had sleep disorder.Differences were detected between the scores of PSQI and those in Chinese Norm(P

Objective To investigate the expression of long non-coding RNA(lncRNA)small nucleolar RNA host gene(SNHG)25 and microRNA(miR)-497-5p in glioma tissues and their relationship with clinical features and prognosis.Methods A total of 157 glioma patients admitted to the hospital from January 2019 to January 2020 were selected as the glioma group,and 100 patients who underwent surgical treatment due to craniocerebral injury in the same hospital during the same period were selected as the control group.The ex-pression levels of lncRNA SNHG25 and miR-497-5p were detected in glioma tissues and normal brain tissues resected during operation.The patients were followed up for 3 years.The correlation between the expression levels of lncRNA SNHG25 and miR-497-5p was analyzed,and the relationship between the expression level of lncRNA SNHG25 and miR-497-5p and the clinical characteristics and prognosis of patients were analyzed.Re-sults Compared with the control group,the expression level of lncRNA SNHG25 in the glioma group was in-creased(P＜0.05),and the expression level of miR-497-5p was decreased(P＜0.05).Compared with the maximum diameter of tumors＜4 cm,World Health Organization(WHO)central nervous system tumor grade Ⅰ-Ⅱ,the expression level of lncRNA SNHG25 was increased and the expression level of miR-497-5p was decreased in glioma tissues with the maximum diameter of tumors ≥4 cm and WHO central nervous sys-tem tumor grade Ⅲ-Ⅳ(P＜0.05).The expression level of lncRNA SNHG25 in glioma patients was nega-tively correlated with miR-497-5p(r=-0.370,P＜0.05).The cumulative survival rate of lncRNA SNHG25 high expression group was lower than that of lncRNA SNHG25 low expression group(P＜0.05),and the cu-mulative survival rate of miR-497-5p low expression group was lower than that of miR-497-5p high expression group(P＜0.05).Grade Ⅲ-Ⅳ of WHO central nervous system tumor grade and high expression of lncRNA SNHG25 were risk factors for poor prognosis of glioma patients(P＜0.05),while high expression of miR-497-5p was a protective factor(P＜0.05).Conclusion The expression of lncRNA SNHG25 is increased and the expression of miR-497-5p is decreased in glioma tissues,which is related to the maximum diameter of tumor and high WHO central nervous system tumor grade,and can lead to poor prognosis of glioma patients.

ObjectiveTo explore the dose-effect relationship and safety of high， medium， and low doses of raw Astragali Radix in the modified Huangqi Chifengtang （MHCD） for treating proteinuria in immunoglobulin A （IgA） nephropathy， and to provide scientific evidence for the clinical use of high-dose Astragali Radix in the treatment of proteinuria in IgA nephropathy. MethodsA total of 120 patients with IgA nephropathy， diagnosed with Qi deficiency and blood stasis combined with wind pathogen and heat toxicity， were randomly divided into a control group and three treatment groups. The control group received telmisartan combined with a Chinese medicine placebo， while the treatment groups were given telmisartan combined with MHCD containing different doses of raw Astragali Radix （60， 30， 15 g）. Each group contained 30 patients， and the treatment period was 12 weeks. Changes in 24-hour urinary protein （24 hUTP）， traditional Chinese medicine （TCM） syndrome scores， effective rate， and renal function were observed before and after treatment. Safety was assessed by monitoring liver function and blood routine. ResultsAfter 12 weeks of treatment， 24 hUTP significantly decreased in the high， medium， and low-dose groups， as well as the control group （P<0.05， P<0.01）. The TCM syndrome scores in the high， medium， and low-dose groups also significantly decreased （P<0.01）. Comparisons between groups showed that the 24 hUTP in the high-dose group was significantly lower than in the medium， low-dose， and control groups （P<0.05， P<0.01）， and the 24 hUTP in the medium-dose group was significantly lower than in the control group （P<0.05）. The TCM syndrome scores in the high and medium-dose groups were significantly lower than in the low-dose and control groups （P<0.05， P<0.01）. The total effective rates for proteinuria in the high， medium， low-dose， and control groups were 92.59% （25/27）， 85.19% （23/27）， 60.71% （17/28）， and 57.14% （16/28）， respectively. The effective rates in the high and medium-dose groups were significantly higher than in the low-dose and control groups （χ²=13.185， P<0.05， P<0.01）. The effective rates for TCM syndrome scores in the high， medium， low-dose， and control groups were 88.89% （24/27）， 81.48% （22/27）， 71.43% （20/28）， and 46.43% （13/28）， respectively. The efficacy of TCM syndrome scores in the high and medium-dose groups was significantly higher than in the control group （χ²=14.053， P<0.01）. Compared with pre-treatment values， there was no statistically significant difference in eGFR and serum creatinine in the high and medium-dose groups. However， eGFR significantly decreased in the low-dose and control groups after treatment （P<0.05）， and serum creatinine levels increased significantly in the control group （P<0.05）. No statistically significant differences were observed in urea nitrogen， uric acid， albumin， total cholesterol， triglycerides， liver function， and blood routine before and after treatment in any group. ConclusionThere is a dose-effect relationship in the treatment of IgA nephropathy with high， medium， and low doses of raw Astragali Radix in MHCD. The high-dose group exhibited the best therapeutic effect and good safety profile.