The characteristics and correlations of vaginal flora in women with cervical lesions / 中华肿瘤杂志

Objective: To explore the characteristics and correlations of vaginal flora in women with cervical lesions. Methods: A total of 132 women, including 41 women diagnosed with normal cervical (NC), 39 patients with low-grade cervical intraepithelial neoplasia (CIN 1), 37 patients with high-grade cervical intraepithelial neoplasia (CIN 2/3) and 15 patients with cervical squamous cell carcinoma (SCC), who came from the gynecological clinic of Second Hospital of Shanxi Medical University during January 2018 to June 2018, were enrolled in this study according to the inclusive and exclusive criteria strictly. The vaginal flora was detected by 16S rDNA sequencing technology. Co-occurrence network analysis was used to investigate the Spearman correlations between different genera of bacteria. Results: The dominant bacteria in NC, CIN 1 and CIN 2/3 groups were Lactobacillus [constituent ratios 79.4% (1 869 598/2 354 098), 63.6% (1 536 466/2 415 100) and 58.3% (1 342 896/2 301 536), respectively], while Peptophilus [20.4% (246 072/1 205 154) ] was the dominant bacteria in SCC group. With the aggravation of cervical lesions, the diversity of vaginal flora gradually increased (Shannon index: F=6.39, P=0.001; Simpson index: F=3.95, P=0.012). During the cervical lesion progress, the ratio of Lactobacillus gradually decreased, the ratio of other anaerobes such as Peptophilus, Sneathia, Prevotella and etc. gradually increased, and the differential bacteria (LDA score >3.5) gradually evolved from Lactobacillus to other anaerobes. The top 10 relative abundance bacteria, spearman correlation coefficient>0.4 and P<0.05 were selected. Co-occurrence network analysis showed that Prevotella, Peptophilus, Porphyrinomonas, Anaerococcus, Sneathia, Atopobium, Gardnerella and Streptococcus were positively correlated in different stages of cervical lesions, while Lactobacillus was negatively correlated with the above anaerobes. It was found that the relationship between vaginal floras in CIN 1 group was the most complex and only Peptophilus was significantly negatively correlated with Lactobacillus in SCC group. Conclusions: The increased diversity and changed correlations between vaginal floras are closely related to cervical lesions. Peptophilus is of great significance in the diagnosis, prediction and early warning of cervical carcinogenesis.

Molecular mechanism of a Matijin-su derivative for inhibiting proliferation, invasion and migration of prostate cancer cells / 中国药理学通报

Aim To investigate the effects of HXL130 on the proliferation, invasion and migration of prostate cancer PC3 cells and its molecular mechanism. Methods MTT assay was used to detect the effect of HXL130 on the proliferation of prostate cancer PC3 cells. Hoechst 33258 staining and flow cytometry were used to detect the effects on apoptosis and cell cycle of cancer cells. Transwell was used to detect the effects of compounds on the invasion and migration of cancer cells. Proteomic sequencing was employed to detect differentially expressed proteins (DEPs) induced by compound treatment of cancer cells. Bioinformatics was used to analyze the functions of DEPs and the related signaling pathways regulated by DEPs, and Western blot was used to verify the result. Results The survival rate of PC3 cells decreased with the increase of HXL130 concentration and treatment time. HXL130 could significantly induce cell apoptosis and block G

Abnormal Circadian Clock Ｐromotes AOM / DSS-induced Colon Carcinogenesis in Mice by Remodeling Tumor Metabolism / 中国生物化学与分子生物学报

Abnormal circadian clock has been identified as an independent risk factor for tumorigenesis, and is closely related to the occurrence and development of tumor. As metabolic disorder is also one of the important characteristics of tumorigenesis, therefore it is particularly important to investigate the regulatory relationship between biological clock and tumor metabolism. In this study, the effect of abnormal circadian clock on colon cancer growth was evaluated by azoxymethane (AOM) / dextran sodium sulfate (DSS) -induced colitis-associated carcinogenesis (CAC) mice model. The result showed that abnormal circadian clock aggravated anal swelling, redness, bloody and anorectal prolapse in CAC mice, and significantly increased the number and volume of CAC polyps (P <0. 05 or P <0. 01), and reduced the intestinal length, body weight, survival rate of CAC mice and the expression levels of inflammatory factors IL-1β (interleukin-1 beta) and TNFα (tumor necrosis factor α) (P < 0. 05 or P < 0. 01), indicating that abnormal biological clock promotes the occurrence and development of CAC. Further, non-target metabonomics analysis of serum samples from mice was performed by liquid chromatography-mass spectrometry (LC-MS) . The result showed that compared with CAC mice with normal circadian rhythm, 27 differential metabolites were identified in CAC mice with disrupted circadian clock, and 9 metabolic pathways were enriched by KEGG (kyoto encyclopedia of genes and genomes) database. These results suggest that abnormal circadian clock can significantly change the relative abundance of some metabolites in serum samples from CAC mice, remodel tumor metabolism, and result in the development of CAC in mice. This study reveals the pivotal role of tumor metabolism in the abnormal circadian clock promoting the growth of CAC in mice, providing a new experimental basis for the interaction between circadian clock and metabolic homeostasis in the occurrence and development of colon cancer.

Determination of four essential oils in cinnamomum cassia by quantitative analysis of multi-components by single marker / 中国药学杂志

OBJECTIVE: To establish a method of quantitative analysis of multi-components by single marker (QAMS) for determining four essential oils (cinnamaldehyde, cinnamyl alcohol, cinnamic acid, 2-methoxy cinnamaldehyde) in Cinnamomum cassia, and provide the experimental base for establishing the quality standard of Cinnamomum cassia. METHODS: Cinnamaldehyde was used as the internal reference standard, and the relative correction factors (RCF) of cinnamyl alcohol, cinnamic acid, and 2-methoxy cinnamaldehyde in Cinnamomum cassia were calculated. The contents of the four components were determined by both external standard method and QAMS. The validity of the QAMS method was evaluated by comparison of the quantitative results of both methods. RESULTS: The RCFs had good reproducibility, relative correction factor 0.673, 0.605 and 1.943, with RSDs of 0.529%, 0.373%, and 0.759%, respectively. No significant differences were found in the quantitative analysis results of cinnamyl alcohol, cinnamic acid, 2-methoxy cinnamaldehyde by using RCF and ESM. CONCLUSION: In the absence of reference substance, the content determination of the four essential oils in Cinnamomum cassia can be realized by QAMS, and this method can be used in the multi-index evaluation of Cinnamomum cassia essential oil constituents. It is suggested that the standard for cinnamaldehyde content be increased to 2.5%, and the contents of total cinnamyl alcohol, cinnamic acid and 2-methoxy cinnamaldehyde be not less than 0.2%.

Nasal endoscopy-assisted bulboprostatic anastomosis for posterior urethral stricture / 中华男科学杂志

<p><b>OBJECTIVE</b>To study the clinical value and operation skills of nasal endoscopy-assisted bulboprostatic anastomosis in the treatment of posterior urethral stricture.</p><p><b>METHODS</b>Between January 2012 and November 2014, we performed nasal endoscopy-assisted bulboprostatic anastomosis for 12 male patients with posterior urethral stricture. We recorded the operation time, blood loss, exposure of operation visual field, and success rate of anastomosis and summarized the operation skills.</p><p><b>RESULTS</b>Eight of the patients experienced first-stage recovery. Two underwent a urethral dilation at 3 months postoperatively, 1 received 10 urethral dilations within 5 months after surgery, and 1 underwent internal urethrotomy after failure in urethral dilation, but all the 4 cases were cured.</p><p><b>CONCLUSION</b>Nasal endoscopy can significantly improve the operation field exposure, elevate the precision, reduce the difficulty, and enhance the efficiency of bulboprostatic anastomosis in the treatment of posterior urethral stricture.</p>