Clinical effect of laparoscopy for the treatment of biliary stricture after biliary dilatation operation / 中华外科杂志

Objective: To investigate the safety and effect of laparoscopy for the treatment of biliary stricture after the biliary dilatation operation. Methods: The clinical data of 78 patients,including 27 males and 51 females aged (48.6±14.2)years(range:17 to 76 years),who presented biliary stricture after biliary dilatation operation from January 2017 to June 2021 in the Department of Minimally Invasive Hepatobiliary Surgery,Hunan Provincial People's Hospital,were retrospectively collected,with 38 cases in the laparoscopy group and 40 cases in the laparotomy group. Of the 78 patients,there were 67 cases of cholangiojejunostomy stricture and 11 cases of stricture of the high intrahepatic bile duct. Statistical methods such as t-test and χ2 test were carried out to compare perioperative clinical data and follow-up information between the two groups. Results: Less intraoperative blood loss((102.6±76.4)ml vs. (162.5±105.9) ml, t=-2.874,P=0.005),shorter postoperative stay length of stay((10.5±3.7)days vs. (14.5±6.4)days, t=-3.379,P=0.001) and shorter waiting time for postoperative anal exhaust((2.0±0.6)days vs. (2.5±0.9)days, t=-2.827,P=0.006) were found in the laparoscopy group than that in the laparotomy group,with statistically significant differences. While there was no statistically difference in the operative time((252.8±54.7)minutes vs. (257.4±68.6)minutes,t=-0.331,P=0.742). Postoperative review and follow-up did not show statistically significant differences between the two groups in the residual stone rate(5.3%(2/38) vs. 5.0%(2/40)) and the incidence of recurrent biliary stricture(5.3%(2/38) vs. 7.5%(3/40))(both P>0.05). Conclusion: Laparoscopy may be safe and effective in the treatment of biliary stricture after the biliary dilatation operation,with less trauma,faster recovery compared to laparotomy.

Phylogenetic and Molecular Analysis of an H7N7 Avian Influenza Virus Isolated in East Dongting Lake in 2012 / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>In March 2012, an H7N7 subtype avian influenza virus (AIV) named A/wild goose/Dongting/PC0360/2012 (H7N7) (DT/PC0360) was recovered from a wild goose in East Dongting Lake. We performed whole-genome sequencing of the isolate, and analyzed the phylogenetic and molecular characterization.</p><p><b>METHODS</b>RNA was extracted from environment samples (including fecal samples from wild bird or domestic ducks, and water samples) for detecting the presence of Influenza A Virus targeting Matrix gene, using realtime RT-PCR assay. The positive samples were performed virus isolation with embryonated eggs. The subtype of the isolates were identified by RT-PCR assay with the H1-H16 and N1-N9 primer set. The whole-genome sequencing of isolates were performed. Phylogenetic and molecular characterizations of the eight genes of the isolates were analyzed.</p><p><b>RESULTS</b>Our results suggested that all the eight gene segments of DT/PC0360 belonged to the Eurasian gene pool, and the HA gene were belonged to distinct sublineage with H7N9 AIV which caused outbreaks in Mainland China in 2013. The hemagglutinin cleavage site of HA of DT/PC0360 showed characterization of low pathogenic avian influenza virus.</p><p><b>CONCLUSION</b>Strengthening the surveillance of AIVs of wild waterfowl and poultry in this region is vital for our knowledge of the ecology and mechanism of transmission to prevent an influenza pandemic.</p>

Treating menopause syndrome by kuntal capsule and hormone replacement therapy: a meta-analysis of efficacy and safety comparison / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To evaluate the efficacy and safety of Kuntai Capsule (KC) and hormone replacement therapy (HRT) in treating menopause syndrome by Meta-analysis.</p><p><b>METHODS</b>Randomized controlled trials were electronically retrieved from PubMed, EMbase, The Cochrane Library, CBM, CNKI, Chinese Doctoral Dissertation Full Text Database, Chinese Outstanding Masters' Dissertation Full Text Database, and VIP database, Wanfang Database, and some other related papers were manually checked. All papers were assessed according to the Cochrane Handbook for Systematic Reviews of interventions and then effective data were analyzed by RevMan 5.0.2 Software.</p><p><b>RESULTS</b>Eight randomized control trials involving 675 patients were included. Results of Meta-analysis showed that there was no statistical difference in the Kupperman Menopausal Scores [MD = 1.91, 95% CI (-0.31, 4.12)] and the effective rate of Kupperman Menopausal Scores [OR = 1.37, 95% CI (0.66, 2.85)] between the KC group and the estrogen replacement therapy group (P > 0.05). Compared with the KC group, the E2 level [MD = -12.8, 95% CI (-22.85, -2.76)] and the FSH level [MD = 17.96, 95% CI (3.03, 32.88)] could be significantly improved in the estrogen replacement therapy group. Compared with the estrogen replacement group, KC could significantly reduce the total incidence of adverse reactions [OR = 0.41, 95% CI (0.24, 0.73)], the incidence of breast distending pain [OR = 0.65, 95% CI (0.42, 1.00)], and the incidence of vaginal bleeding [OR = 0.26, 95% CI (0.17, 0.40) ] (P < 0.05).</p><p><b>CONCLUSIONS</b>The current limited evidence showed that, when compared with the estrogen replacement therapy group, KC could also improve climacteric symptoms. It was inferior to the estrogen replacement therapy group in improving in vivo hormone levels. But it was superior in reducing the incidence of adverse reactions, breast distending pain, and vaginal bleeding.</p>

Identification of major components of traditional Chinese medicine Naodesheng tablet by HPLC-DAD-MS(n) / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To identify the major components of traditional Chinese medicine Naodesheng tablet.</p><p><b>METHODS</b>A HPLC-DAD-MS(n) based method was developed to analyze and identify the major components of Naodesheng tablet. Separation was performed on an Agilent Zorbax SB-C(18) column (4.6 mm X 250 mm, i.d, 5 μm) with mobile phase consisting of water with 0.05 % formic acid and acetonitrile as gradient eluent at the flow rate of 0.5 ml.min(-1).</p><p><b>RESULTS</b>A total of 43 components were detected, among which 22 were identified by comparing their UV absorption profiles, the information of molecular Glucosyl puerarin weights, and structures provided by ESI-MS(n) with those of available standards and reference data, such as Safflor yellow A, 4'-O-Glucosyl puerarin, 3'-hydroxypuerarin, Genistein-8-C-apiosyl (1-6) glucoside, Puerarin, 6"-O-xylosyl puerarin, 6"-O-apiosyl puerarin, 3'-methoxy puerarin, 3'-methoxy-6"-o-xylosyl puerarin, Daidzin, Genistin, Pueroside A, Notoginsenoside R(1), Ginsenoside Re, Ginsenoside Rg1,Daidzein,Biochanin A,Ginsenoside Rb(1), Ginsenoside Rc, Ginsenoside Rb(2), Ginsenoside Rb(3), Ginsenoside Rd.</p><p><b>CONCLUSION</b>The proposed method can identify the main components of Naodesheng tablet and provide information for the quality control of this medicine.</p>

Tolterodine tartrate combined with alpha-receptor blocker for benign prostatic hyperplasia with detrusor overactivity / 中华男科学杂志

<p><b>OBJECTIVE</b>To evaluate the efficacy and safety of Tolterodine Tartrate combined with the alpha-receptor blocker in the treatment of benign prostatic hyperplasia with detrusor overactivity (BPH-DO).</p><p><b>METHODS</b>A total of 113 patients with BPH-DO were randomly assigned to receive Tolterodine Tartrate combined with Cardura (Group A) and Cardura alone (Group B), both for 12 weeks. Then we recorded and compared their average 24 h urinary frequency, IPSS and QOL score, maximum urinary flow rate, residual urine volume and urinary retention times before and after the treatment.</p><p><b>RESULTS</b>After the treatment, Group A showed significantly better improvement in the average 24 h urinary frequency and scores on IPSS and QOL than Group B. No significant differences were found between the two groups in the maximum urinary flow rate and residual urine volume. No acute urinary retention occurred in either group.</p><p><b>CONCLUSION</b>The combined use of Tolterodine Tartrate and the alpha-receptor blocker can effectively relieve the symptoms of dysuria, urinary frequency and urinary urgency in patients with BPH-DO, with neither significant adverse effects on the maximum flow rate and residual urine volume nor increase in the incidence of acute urinary retention.</p>

Current status of non-viral vectors for siRNA delivery / 药学学报

RNA interference (RNAi) is a newly developed technology. It is the different levels of gene silencing induced by specific degradation of targeted genes in vivo, and both exogenous and endogenous double-stranded RNAs could induce the specific degradation. RNAi has been applied in tumor therapy, viral infection, hepatitis B and many other diseases. siRNA is the effector molecule which induces the RNAi in vivo. But naked siRNA is easily degradated by RNases in vivo, and the half-life is short. Meanwhile, the transfection efficiency of the naked siRNA is comparatively low. So the naked siRNA needs the help of vectors to penetrate the cell membrane and take action. Viral vectors have the potential immunogenicity and mutagenicity in gene therapy. Therefore, non-viral vectors are drawing more and more attention. The latest development of the non-viral vectors is summarized in this review.

A chromatographic fingerprinting-based approach to evaluating the stability of production process of traditional Chinese medicine / 中国中药杂志

<p><b>OBJECTIVE</b>To study a new method for the evaluation of the stability of production process of Traditional Chinese Medicines (TCM) based on chromatographic fingerprinting.</p><p><b>METHOD</b>Taking the extraction process of Red Ginseng for example, the fingerprints of extracts produced with fluctuating processing factors, i.e. ratio of solvent to liquid, solvent concentration, extraction durations and extraction times, were acquired. Meanwhile, the similarity of fingerprinting based on Euclidean distance was calculated and each fingerprint was fitwith cubic spline.</p><p><b>RESULT</b>Similarities of fingerprints of the extracts responded to the fluctuation of processing factors, and it showed that taking similarity as index, quantitative relation between chromatographic fingerprints and processing factors could be established.</p><p><b>CONCLUSION</b>The method proposed in the paper was able to describe the quality of products resulting from fluctuating conditions in extracting process, and therefore, can be developed as a practicable strategy to evaluate the stability Traditional Chinese Medicines in production process.</p>