Objective To analyze the effect of duloxetine on S100B and signal pathway ERK1/2-NF-κB expression in hippocampus in depression rat.Methods Chronic unpredictable mild stimulation was used to establish depressive model rats (n=50).They were randomly divided into no-intervention group (n=10),different treatment time of duloxetine group (C,D,E,F group,10 rats in each group)and then 10 normal rats were selected as control group.Behavior tests including open-field test and the saccharine preference test were used to test the behavioral change of rats after 28 days intragastric administration.Western blot was used to detect S100B,t-ERK1/2,pERK 1/2,t-NF-κB and pNF-κB expression in hippocampus.Results In open-field test,the crossing score,rearing score and latency of the rats in E,F group were (69.68± 14.61) and (70.66± 11.53) score,(20.94 ± 10.92) and (20.32±8.85) score,(1.1±0.4)s and(1.0±0.4) s respectively,and showed no significant difference with those of control group ((71.19±12.08) score,(20.42±8.76) score,(1.0±0.3)s) after 28 d intragastric administration (P＞0.05),while the level score,vertical score were significantly higher than those in depressive model (P＜ 0.05).In the saccharine preference test,the rats in E,F and control group exhibited increased saccharin preference compared with depressive model rats (P＜0.05).The rats in E,F and control group exhibited increased S100B,pERK1/2 and pNF-κB expression in hippocampus compared with depressive model rats (P＜0.05).Conclusion Duloxetine improves the behavioral ability of depression rat and exerts effect after 2 weeks.The ERK1/2-NF-κB signal pathway in hippocampus may participate in this mechanism.

Objective:To explore the relationship between cervical microecology and cervical squamous intraepithelial lesions (SIL).Methods:All subjects were recruited from the health care center or gynecology of the Affiliated Wuxi No.2 People′s Hospital of Nanjing Medical University from March to May of 2019, including 12 subjects normal cervix with 37-47 years old, 21 low-grade squamous intraepithelial lesion (LSIL) subjects with 39-48 years old, 5 high-grade squamous intraepithelial lesion (HSIL) subjects with 38-45 years old and 3 cervical squamous cell carcinoma subjects with 42-43 years old. All subjects were required to fill in a questionnaire, and performed cervical examination. Meanwhile, the microecology of cervical secretions was analyzed by the next generation sequencing (NGS) and the NGS results were analyzed by bioinformatics. Subjects were divided into human papilloma virus (HPV)-negative groups, low-risk HPV (lrHPV), 16/18 high-risk HPV (hrHPV) and other hrHPV infection groups based on HPV test results of NGS. The Venn diagram of data, microecology diversity, the relative abundance and co-occurrence of species, and the receiver operating characteristic (ROC) curve were analyzed.Results:A total of 909 species at the species level were obtained from the cervical secretions of all the subjects, and there was overlap among the groups. There was no significant difference in total HPV infection rate, 16/18 hrHPV infection rate and other hrHPV infection rates among subjects with different cervical lesions (all of P>0.05). Grouped by HPV infection, the 16/18 hrHPV-infected and other hrHPV-infected subjects had increased cervical microecology diversity ( U=39.00 and 43.00, all of P<0.05), and the relative abundance of Lactobacillus crispatus (L.crispatus) had no differences among the groups ( H=4.37, P=0.213 6). Grouped by cervical conditions, the cervical microecology diversity of the subjects with cervical lesions increased ( H=14.60, P=0.002 2), while the L.crispatus relative abundance decreased ( H=13.98, P=0.000 8). Among all the detected species, Mycoplasma, Chlamydia and Streptococcus B had a co-occurrence, while Lactobacillus iners, Gardnerella vaginalis, Atopobium vaginae, and Prevotella bivia had a co-occurrence. As the SIL diagnostic index, the area under the ROC curve (AUC) of the relative L.crispatus relative abundance was 0.874 [95% confidence interval ( CI):0.732-0.957]. L.crispatus combined with Lactobacillus jensenii (L.jensenii) and Mycoplasma had an AUC of 0.943 [95 %CI: 0.822-0.991] in the SIL diagnosis. Conclusions:The decreased L.crispatus relative abundance and the increased cervical microecology diversity may be related to HPV infection and cervical lesions; simplified NGS data may be helpful to the SIL diagnosis.