Objective To investigate the clinical significance of the miR-543/syntrophin beta 1(SNTB1)axis in colorectal cancer(CRC)and its influence on the tumor immune microenvironment.Methods The expression of SNTB1 in CRC tissues was analyzed using public data,such as,The Cancer Genome Atlas(TCGA),Genotype-Tissue Expression(GTEx),and Human Protein Atlas(HPA).Then Kaplan-Meier survival analysis,univariate Cox regression analysis and correlation analysis were performed to evaluate the prognostic value of SNTB1 and its relationship with immune microenvironment in CRC.The targeting relationship between miR-543 and SNTB1 was confirmed through online databases and fluorescence assays in HT-29 cells.For in vitro experiments,after transfecting si-SNTB1,miR-543 mimics and/or SNTB1 overexpression plasmids,HT-29 cells were co-cultured with CD8+T cells,the expression of miR543 and SNTB1 and the viability and cytotoxicity of CD8+T cells were assessed with qRT-PCR,Western blotting,flow cytometry,ELISA,and lactate dehydrogenase(LDH)release assay.Results Analysis of public databases revealed significantly higher expression of SNTB1 in CRC tissues than normal tissues(P<0.001).The CRC patients with high SNTB1 expression exhibited poorer prognosis when compared with those with low expression level(P<0.05).Moreover,high SNTB1 expression was negatively correlated with immune scores in the tumor microenvironment and immune cell infiltration,especially CD8+T cells(P<0.05).Furthermore,Knockdown of SNTB1 in HT-29 cells enhanced the cytotoxic activity of CD8+T cells(P<0.01).Online database and in vitro experiments confirmed that miR-543 targets SNTB1,while the expression of miR-543 was decreased in colorectal cancer(P<0.001).Transfection with the miR-543 mimic inhibited the expression of SNTB1 in HT-29 cells(P<0.001),while overexpressing SNTB1 counteracted the promotion effect of miR-543 mimics on CD8+T cell-mediated cytotoxicity(P<0.05).Conclusion MiR-543 activates CD8+T cells and enhances their cytotoxicity against HT-29 cells by directly targeting SNTB1.

OBJECTIVE：To analyze the chemotypes of volatile components from Perillae Folium of different germplasms ，and to investigate the relationship of germplasm and leaf color with chemotype. METHODS ：The fingerprints of volatile components from 30 batches of Perillae Folium were prepared by GC-MS with P 4 peak as reference. Similarity Evaluation System for TCM Chromatographic Fingerprint （2004A edition ）was applied to evaluate the similarity and confirm common peaks. The volatile components of Perillae Folium were determined by the same GC-MS method. Qualitative Navigator （B.08.00）software was used to analyze and compare with NIST 17.0 standard mass spectrum database. The compounds corresponding to the peak were analyzed ； clustering analysis was carried out with Origin 2018 software. RESULTS ：There were 13 common peaks in the fingerprints of volatile components from 30 batches of Perillae Folium . The similarities were 0.13-1.00. Totally 54 components were identified from 30 batches of Perillae Folium of different germplasm. Cluster analysis showed that 30 batches of Perillae Folium samples could be clustered into three categories ；among them ，SCY-1，YNT-9，YNX-17，YN-28 were clustered into one category ，with phenylpropanoid-elemicin（PP-e as ）the main volatile component ，being PP-e type ；GS-4，GS-7，GS-11，GS-19，HBA-14， HBA-20，GZZ-8，LN-39，GSL-27，GSQ-32，GSQ-33，GST-31，YNW-12，LN-38 were clustered into one category ，and the content of perilla ketone （PK）in them was the highest except for LN- 38， being PK type [the content of phenylpropanoid-apiol（PP-a）in LN- 38 was higher than that of perilla ketone ，being PP-a type] ；HBS-2，HBS-3，HBS-6， C201859）HBS-15，HBS-16，HBS-24，HBS-25，GX-26，SXS-30，SCC- 36，RB-37，SC-29 were clustered into one category ，and thecontent of perillaldehyde （PA）was the highest ，being PA type.The color characteristics of Perillae Folium of different germplasm showed that Perilla frutescens （L.） Britt. var.frutescens with green leaves on both sides was PK type ，while P. frutescens （L.）Britt. var. arguta with purple leaves on one or both sides was PA type ，and P. frutescens （L.） Britt var. auriculato-dentata C. Y. Wu et Hsuan ex H. W. Li was PP-e type. CONCLUSIONS：The chemotype of volatile components in Perillae Folium have a certain corresponding relationship with their leaf colors. Most of P. frutescens （L.）Britt. var. arguta with purple leaves on one side or both sides are PA type. P. frutescens （L.） Britt. var. acuta （Thunb.）Kudo，P. frutescens （L.）Britt var. auriculato-dentata C. Y. Wu et Hsuan ex H. W. Li and P. frutescens （L.）Britt. var. frutescens with green leaves on both sides do not belong to PA type ，among which P. frutescens （L.）Britt var. frutescens is PK type ，while P. frutescens （L.）Britt var. auriculato-dentata C. Y. Wu et Hsuan ex H. W. Li is mostly PP-e type.

Objective To evaluate the effect of thoracic paravertebral block ( TPVB) combined with general anesthesia on early postoperative recovery in patients undergoing breast cancer surgery. Meth-ods A total of 201 patients with untreated primary breast cancer, aged 18-69 yr, with body mass in-dex <35 kg∕m2 , of American Society of Anesthesiologists physical status Ⅰ or Ⅱ, scheduled for elective surgery for treatment, were enrolled and randomly assigned to general anesthesia group (group GA, n =102) and TPVB combined with general anesthesia group (group TGA, n= 99). In group TGA, TPVB was performed under ultrasound guidance at 30 min before surgery, and 0. 75％ ropivacaine 5 ml was injected at each puncture site of T1-5 . In group GA, local infiltration anesthesia was performed with 1％ lidocaine 0. 2 ml at each puncture site. Anesthesia was induced with IV fentanyl, propofol and rocuronium in both groups. Anesthesia was maintained by inhaling sevoflurane ( group GA), target-controlled infusion of propofol (group TGA) and intermittent IV boluses of fentanyl or rocuronium. Bispectral index value was maintained at 40-60 during surgery. Verbal Rating Scale score was used to assess the severity of pain after surgery. Parecoxib sodium 40 mg, pethidine 50 mg, tramadol 50 mg or fentanyl 50 μg was selected and intrave-nously injected as rescue analgesics when Verbal Rating Scale pain score>4. The requirement for rescue analgesia and development of nausea and retching∕vomiting were recorded within 2 days after surgery. Chinese quality of recovery score was used to assess the early postoperative quality of recovery on days 1 and 2 after surgery. Results Compared with group GA, the quality of recovery score was significantly increased on days 1 and 2 after surgery, the incidence of postoperative nausea was decreased (P<0. 05), and no signifi-cant change was found in the requirement for rescue analgesia or incidence of retching∕vomiting after surgery in group TGA (P>0. 05). Conclusion TPVB combined with general anesthesia is more helpful than gen-eral anesthesia alone for early postoperative recovery in the patients undergoing breast cancer surgery.

OBJECTIVE To collect the document about drug sensitivity in mycoplasma-infected cases in Beijing area and to instruct drug-selecting in clinic treatment. METHODS Drug sensitivity test on 263 Mycoplasma-positive non-gonococcal urethritis(NGU)(mucopurulent cervicitis,MPC)cases was conducted. RESULTS Tetracyclines and minocycline performed the highest sensitivity(94.68%),followed by josamycin(94.30%) and doxycycline(91.63%).Lomefloxacin had the lowest sensitivity(15.59%). CONCLUSIONS Tetracyclines and macrolides can be employed as the first-choice drugs in NGU(MPC)treatment.

Humans ; Severe Acute Respiratory Syndrome ; diagnosis ; therapy

AIM: To evaluate the safety and efficacy of oral oxycodone /acetaminophen or tramadol in early postoperative patients undergoing laparoscopic gynecological operations. METHODS: 120 gynecologic patients receiving laparoscopy operation were enrolled in a randomized,double blind, placebo controlled, multi center clinical trial with early oral analgesics if the vasual analgesia scores (VAS) was scored higher than 3.0. All patients were randomly received a single dose of oral analgesic: oxycodone/acetaminophen, tramadol or placebo, respectively. For rescue medication, PCA pump was provided in all three groups with a dose of 1 mg morphine and lockout of 5 minutes. The VAS scores, pain relief, PCA morphine consumption and side effects were evaluated at the following occasions of 0.25 , 0.5 , 0.75 , 1, 2, 4, 6, 8, 12 and 24 h throughout the study. RESULTS: The VAS scores and pain relief were significantly different in three groups at 0.75 , 1, 2, 4, 6, 8 and 12 h. The VAS scores and PCA morphine consumption was significantly lower in oxycodone/acetaminophen and tramadol groups than those in placebo group. Pain relief in oxycodone/acetaminophen and tramadol groups was better than those in placebo group. The incidence of side effects such as nausea and vomiting significantly increased in tramadol group at 24 h compared with those in the other two groups. CONCLUSION: Early oral administration of oxycodone /acetaminophen or tramadol can provide surgical patients with good and safe postoperative analgesia after laparoscopy gynecologic operation. The incidence of side effects in oxycodone /acetaminophen group is lower than that in tramadol group in this clinical trial.