Objective: To investigate the nicotine dependence of patients with chronic obstructive pulmonary disease (COPD) who smoke and analyze its influencing factors, so as to provide insights into targeted smoking cessation interventions for smoking COPD patients. Methods: The smoking COPD patients were selected from three hospitals in Lanzhou City using the convenience sampling method from October 2022 to April 2023. Demographic data, smoking status, and willingness to quit smoking were collected using questionnaire surveys. Nicotine dependence was assessed according to Fagerstrom Test for Nicotine Dependence. The influencing factors of nicotine dependence in smoking COPD patients were analyzed using a multiple linear regression model. Results: A total of 200 questionnaires were distributed, and 171 valid questionnaires were collected, with a response rate of 85.50%. The median age was 48.00 (interquartile range, 10.00) years. There were 158 males, accounting for 92.40%; 53 cases with a college degree or above, accounting for 30.99%. The median smoking duration was 15.00 (interquartile range, 11.00) years. There were 73 patients (42.69%) smoking 21 to 30 cigarettes per day, and 159 patients (92.98%) with the willingness to quit smoking. The median nicotine dependence score was 3.00 (interquartile range, 1.00) points. There were statistically significant differences in nicotine dependence scores among smoking COPD patients with different ages, educational levels, occupations, interpersonal relationships, smoking duration, daily cigarette consumption, awareness of smoking hazards and willingness to quit smoking (all P<0.05). Multiple linear regression analysis revealed that nicotine dependence was related with educational level (β=-0.251), interpersonal relationship (β=-0.246), smoking duration (β=0.038), daily cigarette consumption (β=0.518) and willingness to quit smoking (β=-0.173) among smoking COPD patients (all P<0.05). Conclusion The nicotine dependence among smoking COPD patients was influenced by educational level, interpersonal relationships, smoking duration, daily cigarette consumption and willingness to quit smoking.

Objective To identify the pathogenic microorganism by MALDI-TOF MS.Methods A total of 560 strains were resuscitated,which included 260 gram-positive bacteria strains,180 gram-negative bacteria strains,60 yeast-like-fungi strains and 60 enteropathogenic bacteria strains.Comparing MALDI-TOF MS with Vitek2 Compact,the discordant results were validated by 16S rDNA sequencing.Results Comparing MALDI-TOF MS with Vitek2 Compact,the coincidence rate was 94.6％ (246/260) for gram-positive bacteria,96.7％ (174/180) for gram-negative bacteria,95％ (57/60) for yeast-like-fungi,and 93.3％(56/60) for enteropathogenic bacteria Fifteen strains were validated by 16S rDNA gene sequencing.Comparing with sequencing,the coincidence rate of two methods was 66.7％ ( 10/15 ) for MALDI-TOF MS and 26.7％(4/11 ) for Vitek2 Compact,respectively.Conclusion MALDI-TOF MS shows rapid turnaround time and modest reagent costs,and it will be another effective tool for microorganism diagnosis.

Objective Through detecting the expression of triggering receptor expressed on myeloid cells-1 (TREM-1) in pancreas and lung of rats with severe acute panereatitis,to approach the role of TREM-1 in severe actute pancreatitis pathogenesis,and provid a new molecular target for SAP.Methods Thirty healthy male Wistar rat were randomly divided into two groups:control group(group A),n =15 ; severe acute pancreatitis group (group B),n =15.The model of severe acute pancreatitis of rats was induced by retrograde injection of 5％ sodium taurocholate into the pancreatic duct.Results TREM-1 in pancreatic tissues and lung tissues was significantly higher in group B than group A in three time points(6 h,12 h,24 h) and had significant changes(P ＜ 0.05),and had a positive correlation with pancreatic pathology.Conclusion TREM-1 was significantly expressed in severe acute pancreatitis,and aggravated pancreas damage and systemic inflammatory response syndrome.

Objective To observe the effect of fastigial nucleus stimulation(FNS)on heart rate variability(HRV)of surgically induced myocardial infarction rats.Methods 100 Sprague-Dawley rats were randomly allocated in four groups,including sham-operation control group,rats with coronary arteries ligated but fastigial nucleus(FN)sham stimulated(AMI group),rats both coronary arteries ligated and FN stimulated(FNS group),and rats on which FN lesioned 5 d before,then coronary arteries ligated and FN stimulated(FNL group).HRV characteristics were determined 6 h,1 d,7 d and 21 d after the ligation,and mortality rates were observed after 21 d.Results FNS can improve the survival of myocardial infarction rats,and this may be due to the increased vagal tone and decreased sympathetic tone.Conclusion FNS may have cardio-protective effects on surgically induced myocardial infarction rats.

Objective:To systematically evaluate the effect of singing therapy on patients with chronic obstructive pulmonary disease.Methods:Randomized controlled trials on the effect of singing therapy in patients with chronic obstructive pulmonary disease were searched by computer from PubMed, Web of Science, Cochrane Library, CINAHL, Embase, China National Knowledge Infrastructure, Wanfang Data, China Biology Medicine disc, and VIP. The search period was from the establishment of databases to June 30, 2023. Two researchers independently screened literature, performed a literature quality assessment, and extracted data. Meta-analysis was performed using RevMan 5.4 software.Results:A total of 11 articles were included. Meta-analysis showed that singing therapy for 10 weeks or more could improved anxiety ( MD=-5.01, 95% CI: -5.76~-4.25, P<0.001), and depression ( MD=-4.73, 95% CI: -8.82~-0.64, P=0.020). Singing therapy with a duration of less than 60 min per session and/or five interventions per week or more could improve FEV 1% predicted values ( MD=9.46, 95% CI: 7.66~11.26, P<0.001) in patients with chronic obstructive pulmonary disease. Conclusions:Singing therapy is best achieved at least five times a week, with each session lasting less than 60 minutes and lasting for at least ten weeks. However, more high-quality, multicenter and large sample studies are still needed for further validation.

Objective To compare the efficacy of transvaginal and transabdominal repair surgery for the treatment of vesicovaginal fistula(VVF).Methods The data of 39 patients undertaken VVF repair in our department between January 2005 and December 2016 was retrospectively reviewed.The patients aged 19 to 69 years (median 45 years),and the median duration of the condition was 22 months (range:1 month to 20 years).The etiologies were all iatrogenic injuries.Thirty-nine patients underwent a total of 43 surgical repairs including 26 transabdominal approach(group 1)and 17 transvaginal approach(group 2).There was no significant difference in terms of the patients' age,fistula size,location and the proportion of patients undergoing repairs previously between the two groups.The operative and outcome data of the two groups was compared.Results The surgical time of group 2 was shorter than that of group 1 (median 85 min vs.178 min,Z =-4.436,P ＜ 0.01).The median blood loss was 20 (5-100) ml in group 2 and 50 (20-800) ml in group 1,and there was statistically significant difference (Z =-3.767,P ＜ 0.01).The postoperative hospital stay of group 2 was also shorter than that of group 1 (median 7 d vs.12 d,Z =-3.076,P ＜ 0.01).The follow-up period was 3 to 120 months (median 26 months).The success rate was 82.4％ (14/17) in group 2 and 80.8％ (21/26) in group 1,and there was no significant difference between the two groups (x2 =0.017,P ＞ 0.05).Conclusion Compared with transabdominal repair,transvaginal repair of VVF is a preferred surgical procedure in respect that it is more simple,less invasive and has similar success rate with transabdominal repair.

This study was undertaken to investigate the anti-lymphocytic malignacy immunologic effects induced by TCR idiotypic DNA vaccine on BALB/c mice. CEM lymphoma cell line and BALB/c mice were used as models. The rearrangement gene fragment coding TCR Vbeta region of CEM cell line was obtained by RT-PCR technique. The PCR product was cloned into the eukaryocytic expression vector pcDNA3 to be used as DNA vaccine. The experimental animals were immunized by intramuscular injection with DNA vaccine. The specific anti-idiotypic antibody was detected by indirect immunofluorescence assay. The specific anti-idiotypic cellular immunity was detected by CTL activity assay using MTT method. The results showed that specific anti-idiotypic antibody in the immunized mice sera could be found since four weeks after immunization and came to the peak of titer on the sixth week. Using IL-6 as immunological adjuvant could significantly increase the antibody titers. It was concluded that the TCR idiotypic DNA vaccine could induce effectively the specific anti-lymphoma idiotypic antibody in BALB/c mice. Using IL-6 as immunological adjuvant could significantly increase the antibody titers induced by idiotipic DNA vaccine.

OBJECTIVETo investigate the anti-human CEM lymphoma cell activities induced by TCR idiotypic DNA vaccine containing different antigen determinants in BALB/c mice.

METHODSThe specific rearranged gene fragment encoding TCRVbeta region of CEM cell line was obtained by RT-PCR technique. The PCR product was cloned into eukaryocytic expression vector pcDNA3, which was used as DNA vaccine and template for PCR amplifying different antigen determinant. Gene fragments encoding different antigen determinant were amplified and cloned into pcDNA3, separately. The experimental mice were immunized by intramuscular injection of the DNA vaccines. The specific anti-idiotype antibodies were detected by indirect immunofluorescence assay.

RESULTSTCRbetaV of CEM cell line contains five antigen determinants. Specific anti-idiotype antibody was detected in all of the six mice immunized with DNA vaccine containing all the five determinants (the highest titer was 1:480). Although the antibody could also be detected in four of the six mice immunized with DNA vaccine containing four of the five antigen determinants, the antibody titer was lower (the highest titer was 1:80). DNA vaccine containing two of the five determinants could not induce the specific antibody.

CONCLUSIONThe idiotypic DNA vaccine containing the whole TCRbetaV five antigen determinants could induce the specific anti-lymphoma idiotypic antibody in BALB/c mice.

Amino Acid Sequence ; Animals ; Antibodies, Anti-Idiotypic ; blood ; immunology ; Base Sequence ; Complementarity Determining Regions ; genetics ; immunology ; Epitopes ; genetics ; immunology ; HL-60 Cells ; Humans ; Lymphoma ; immunology ; Mice ; Mice, Inbred BALB C ; Molecular Sequence Data ; Receptors, Antigen, T-Cell, alpha-beta ; genetics ; immunology ; Sequence Analysis, DNA ; Tumor Cells, Cultured ; Vaccines, DNA ; genetics ; immunology

Vesicouterine fistula (VUF) represents a rare urogenital complication. It is considered to be the least common type of urogenital fistulae. Surgical repair remains the mainstay of treatment. Transabdominal repair is the most common surgical method and transvaginal route is rarely reported. Herein, we presented the successful transvaginal repair of 3 cases of VUF in our center, including 2 cases of vesicocervical fistula and 1 case of high vesico-uterine body fistula.All the 3 VUF cases were repaired through vagina and followed up for 6 months, 1 year and 2 years, respectively. There was no vaginal leakage or hematuria postoperatively. VUF was cured. Transvaginal repair of VUF was shown to be a feasible, safe and effective procedure with small trauma.

Objective: To explore the impact of household tobacco smoke exposure on adolescents attempted smoking behavior, so as to provide a reference for tobacco control policy formulation and evaluation. Methods: From September to November 2023, a stratified cluster random sampling method was employed to select 7 841 middle and high school students from 10 monitoring sites (districts/counties) in Beijing for a questionnaire survey. Rao-Scott Chi square test was used to assess differences in proportions across subgroups, and complex sampling design based multivariate Logistic regression analysis was conducted to explore the influence of parental smoking and secondhand smoke (SHS) exposure at home on adolescents attempted smoking behavior. Results: About 47.17% of adolescents reported to have at least one parent smoked, with 42.36% reported of having only the father smoked, 0.73% reported of having only the mother smoked, and 4.08% reported of having both parents smoked. About 34.66% of middle and high school students were reported SHS exposure at home in the past 7 days, with 10.98%, 4.79% and 18.89% reported SHS exposure for 1-2, 3-4 and 5-7 days. Compared to adolescents with non smoking parents, those with a smoking father or both smoking parents had higher rates of attempted smoking [ OR (95% CI )=1.45(1.06-1.98), 3.73(2.18-6.37), P < 0.05 ]. Compared to adolescents without SHS exposure at home in the past 7 days, those exposed for 3-4 or 5- 7 days had higher rates of attempted smoking [ OR (95% CI )=2.21(1.27- 3.84 ), 2.46(1.58-3.83), P <0.01]. Conclusions Household tobacco smoke exposure is associated with adolescent attempted smoking behavior. Parents should quit smoking and prohibit smoking at home to create a smoke free environment for adolescents.