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Objective To investigate the clinical value of transrectal ultrasound-guided improved 13-core prostate biopsy in the detection of prostate cancer.Methods Retrospective analysis was conducted in the clinical data of 82 clinically suspected prostate cancer patients in Shaanxi Provincial People's Hospital from October 2015 to October 2016.All patients were undergone transrectal uhrasound-guided improved 13-core prostate biopsy and surgical treatment,and the prostate biopsy results were compared with the postoperative pathological results.The accuracy of the improved 13-core prostate biopsy and the standard 6-core prostate biopsy was compared.The complications of improved 13-core prostate biopsy were also discussed.Results The diagnostic results of prostate biopsy included prostate cancer in 26 patients and benign prostatic hyperplasia (BPH) in 54 patients.The diagnostic results of 80 patients are consistent with postoperative pathological examination.Two patients were diagnosed as BPH by biopsy,but confirmed to be prostate cancer by postoperative pathological examination.The accuracy of the improved 13-core prostate biopsy and the standard 6-core prostate biopsy were 97.6％ (80/82) and 84.1％ (69/82) respectively,and the difference showed statistical significance (P =0.023).No severe complications were found in patients who underwent transrectal ultrasound improved 13-core prostate biopsy.Conclusion Transrectal ultrasound guided improved 13-core prostate biopsy can increase the detection rate significantly.It is safe and efficacious,and can be widely used in clinic.
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Objective To study the bioequivalence of two kinds of levetiracetam extended‐release tables including the ref‐erence product of Keppra XR in Beagle dogs .Methods Dogs were administrated orally with single dose of levetiracetam tablets (1 000 mg) .The concentration of levetiracetam in dog plasma was detected by LC‐MS/MS .All parameters of pharmacokinetics were performed by WinNonlin 5 .2 software .Results Main pharmacokinetic parameters of test and reference tablets were as follow :tmax were 1.67 h and 3 .0 h ,Cmax were 89 .50 μg/ml and 71 .18 μg/ml ,t1/2 were 3 .68 h and 3 .50 h ,AUC(0‐48) were 826 .57 μg?h/ml and 757 .84 μg?h/ml ,AUC(0‐∞ )were 826 .68 μg?h/ml and 757 .93 μg?h/ml .The relative bioavailability of test tablets was 109 .07% to reference products of Keppra XR .Conclusion Therefore ,the two kinds of levetiracetam extended‐release tablets were bioequivalent in Beagle dogs .
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This study is to investigate the effect of ZL-004 on normal mouse and mice with leukopenia induced by chemotherapeutic agents. 5-Fluorouracil were administered intraperitoneally to mice to develop leucopenia, and the mice were treated with ZL-004. The number of peripheral leukocytes and the percentage of granulocyte in total WBC were examined. The results are that ZL-004 markedly raise peripheral blood leukocytes in the normal mice and the mice model of leukopenia. So, ZL-004 could protect mice against 5-fluorouracil damage and raise peripheral blood leukocyte. Features of bone marrow smears is myeloproliferative hyperactivity in the mice, particularly the matured granulocytic series were observed. The mechanism of ZL-004 is to act on the mouse bone marrow causing proliferation and differentiation.
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Virginiamycin acetyltransferase D (VatD) plays a vital rule in streptogramins resistance by chemically inactivating streptogramin A. Therefore, it is desirable to discover novel small molecular weight inhibitors of VatD via state-of-the-art virtual screening techniques. This "cocktail" strategy by combining VatD inhibitor with streptogramins may provide new therapeutic opportunity for resistant bacteria infections. Structure-based virtual screening method (molecular docking) was applied to rank and score a chemical database containing 300 000 commercially available compounds against the VatD substrate binding site. Twenty six out of the 200 top scored compounds from the docking calculation were selected and submitted to the VatD enzymatic inhibition assay. The plasmid pRSET B/vatD was constructed and transformed into E.coli (trxB) host cells for over-expression, and VatD enzyme was purified and validated by showing acetyltransferase activity to Virginiamycin M1. Three out of these 26 tested compounds showed enzymatic inhibition on VatD with IC50 168.6, 91.0 and 55.2 μmol·L-1, separately. Other compounds could not be dissolved in the system and/or had little effect on the enzyme (IC50>200 μmol·L-1). To our knowledge, it is first time that small molecular weight organic compounds were identified as VatD inhibitors. It is expected that the VatD inhibitors identified at present study could serve as lead compounds for the further development of the novel therapeutic agents to overcome streptogramins resistance.
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AIM:To establish the quality specification of Yinzhihuang Injection (extract of Herba Artemisiae scopariae,extract of Fructus Gardeniae,extract of Radix Scutellariae,extract of Flos Lonicerae Japonicae); METHODS:Extractum Artemisiae Scopariae、 Extractum Fructus gardeniae、 Extractum Flos lonicerae and Extractum Radix scutellariae were identified by TLC and were determined by HPLC. RESULTS:The average recoveries of chlorogenil、gardenoside、baicalin and p-hydroxyacetophenone were 99.8%,99.2%,100.1% and 99.9%,respectively.RSD were 0.81%,1.20%,1.90% and 0.55%,respectively.The TLC sports developed were fairly clear,and the blank test showed no interference. CONCLUSION:The method developed is simple and accurate with good reproducibility,and the method can be used for quality control of Yinzhihuang Injection.