1.Preventive effect of rectal nonsteroidal anti-inflammatory drugs for post-ERCP pancreatitis
Chinese Journal of Digestive Endoscopy 2010;27(6):301-302
Objective To investigate the preventive and therapeutic effects of nonsteroidal anti-inflammatory drugs ( NSAIDs) via rectum for hyperamylasemia and pancreatitis after ERCP (endoscopic retrograde cholangiopancreatography).Methods Sixty patients who underwent ERCP for various reasons were randomly divided into preventive and control groups.In addition to routine diazepam (10 mg) and anisodamine (10 mg) given intramuscularly in both groups before ERCP, 100 mg of indometacin suppositories was administered by rectum in preventive group.Serum amylase level was measured before and 6 hours and 24 hours after the procedure.Results Serum amylase levels at 6 hours after ERCP in preventive and control groups were (367.5 ± 268.7 ) U/L and (1034.2 ± 713.5 ) U/L, respectively ( P < 0.05 ), which were (324.9±142.3)U/L and (826.8 ±395.7)U/L, respectively, at 24 hours after ERCP (P<0.05).Conclusion Rectal use of NSAIDs can prevent hyperamylasemia and acute pancreatitis induced by ERCP.
2.Application of precision medicine in non-small cell lung cancer
International Journal of Biomedical Engineering 2015;38(4):247-252
Lung cancer, with growing morbidity and mortality worldwide, is one of the most malignant tumors, representing a significant threat to human health and life.The application of next-generation genomic technologies has offered a more comprehensive look at the mutational landscape across the different subtypes of nonsmall cell lung cancer (NSCLC).A number of recurrent mutations such as TP53, KRAS, and epidermal growth factor receptor (EGFR) have been identified in NSCLC.While targeted therapeutic successes have been demonstrated in the therapeutic targeting of EGFR and ALK, the majority of NSCLC tumors do not harbor these genomic events.This review looks at the current treatment paradigms for lung adenocarcinomas (LAC) and squamous cell carcinomas, examining genomic aberrations that dictate therapy selection, as well as novel therapeutic strategies for tumors harboring mutations in KRAS and TP53 which, to date, have been considered undruggable.A more thorough understanding of the molecular alterations that govern NSCLC tumorigenesis, aided by next-generation sequencing, will lead to targeted therapeutic options expected to dramatically reduce the high mortality observed in lung cancer.
3.Evaluation of the effects of LASIK rectification for refractive errors in children
Chinese Journal of Medical Science Research Management 2010;23(6):418-421,425
To evaluate the effects of LASIK ( laser in situ keratomileusis) rectification for pediatric refractive errors. Methods MEDLINE, Embase, the Cochrane library, Chinese Journal Full-text Database and Chinese Biomedical Literature Database were searched for related literatures in Chinese and English languages. A meta-analysis was performed based on the results. Results This study included 256 eyes (255 patients) from 12 independent researches. Meta-analysis showed postoperation corrected vision improved significantly ( WMD=-0.22, CI: -0.26 ~ -0.19, P<0.00001 ) and LASIK was safe in children. But, considering heterogeneity among articles, Random effect model was applied and revealed the heterogeneity was a little large and the results had a certain bias ( I2 =46.3% ,close to 50% ). Conclusion Current studies have shown that LASIK plays a positive role in children while the safety and predictability have not yet been clear.Moreover, there lacks enough evidence to assess the middle-and long-term efficacy. Thus, more large scale,long-term, randomized control trials should be launched to evaluate the positive and negtive aspects of LASIK in pediatric refractive errors.
4.Tissue-engineering material for the replacement of urethral
Liu LIU ; Dejiang LIANG ; Pengfei SHEN
Chinese Journal of Urology 2001;0(07):-
Objective To experiment the use of allodecellular skin extracellular matrix for the replacement of urethral. Methods Skin extracellular matrix was obtained from 2 dogs by decellularization process.18 experimental dogs were used and a 4 cm segment of urethral was resected in each.In the experimental group of 15 dogs,the resected urethral was replaced by the allo skin ECM.In the control group of 3 dogs,the resected urethral was replaced by allograft transplantation of untreated skin.The neourethral segment was studied with ecectronmicroscopy and immunohistochemical procedures. Results In the experiment animals,urothelial and monocytes could be seen in the ECM area and fully filled up the area after 6 weeks.The histological structure was not much different with a normal urethra.In the control group with allograft transplantation,rejection and necrosis occurred 8~10 days after the transplantation.On the basis of the experiment,skin ECM has been successfully used in clinical practice for 2 patients. Conclusions Alloskin ECM may be an ideal tissue engineering material for the replacement of urethral.
5.Effects of thalidomide on proliferation of human renal cancer cell and expression of basic fibroblast growth factor
Wenhua JIANG ; Pengfei LIU ; Xiaodong LI
Cancer Research and Clinic 2008;20(11):724-726
Objective To elucidate the effects of thalidomide on proliferation of human renal cell line 786-0 and the expression of basic fibroblast growth factor (bFGF) in this cell line. Methods Cell was treated with different doses of thalidomide(6.25 μg/ml, 25 μg/ml, 100 μg/ml) respectively or normal saline as control; cell survival rate was analyzed by MTT assay. The mRNA level of bFGF was detected by reverse transcriptase-polymerase chain reaction (RT-PCR). bFGF protein expression in 786-0 cells was detected by flow cytometry (FCM). Results Thalidomide, ranging from 6.25 μg/ml to 100 μg/ml, suppressed the proliferation of 786-0 cell line in vitro significantly. After application of thalidomide for 48 and 72 hours, the IC50 was 46.42 μg/ml and 19.56 μg/ml respectively. Apoptosis rate increased from 12.43 % to 30.30 %, accompanying with reducing expression of bFGF. Application of thalidomide (25 μg/ml) induced the most significant inhibition to the bFGF in the cell line. Conclusion Thalidomide down-regulates bFGF expression, inhibit the proliferation, and induce apoptosis in 786-0 cell line.
6.Studies on the Chemical Constituents of Alseodaphne hainanensis
Haitao CHANG ; Lian LIU ; Pengfei TU
Chinese Traditional and Herbal Drugs 2000;31(10):725-727
Four compounds were isolated from the ethanolic extract of the bark of Alseodaphnehainanensis Merr. , The structures were identified as: a neolignan eusiderin A [(7R, 8R)-3,4,5,3′-tetram-ethox-△8’,9’-8-o-4’,7-o-5’lignan](I)two benzylisoquinoline alkaloids (6,7-dimethoxyisoquinolinyl)-(4′-methoxyphenyl) methanone(Ⅱ), and( 6, 7-methylenedioxyisoquinolinyl )-( 4′-methoxyphenyl ) methanone (Ⅲ), and 4-hydroxy-3-methoxy benzoic acid ( Ⅳ ) on the basis of HR-SIMS,1HNMR,13CNMRand 2D-NMR spectroscopic analysis. CompoundsⅠ~Ⅲ were obtained from the Alseodaphne genus forthe first time.
7.Diagnosis and treatment of obstructive jaundice following transcatheter hepatic arterial chemoembolization for hepatic cavernous hemangioma
Pengfei LIU ; Wen XU ; Jiamei YANG
Chinese Journal of Digestive Surgery 2014;13(9):740-742
Hepatic cavernous hemangioma is the most common benign tumor of liver.Hepatic artery embolism chemotherapy is one of the commonly used treatment methods,but more and more related complications and sequelae have been reported recently,including obstructive jaundice caused by damaged biliary tract.Because the symptoms are not typical,obstructive jaundice might be misdiagnosed as malignant biliary tumor,which brought troubles to subsequent treatment.In this article,the clinical data of 2 patients with obstructive jaundice following transcatheter hepatic arterial chemoembolization for hepatic cavernous hemangioma were retrospectively analyzed,and the experience in the diagnosis and treatment of this disease was summarized.
8.Simultaneous Determination of Multi-pesticide Residues in Drinking Water by Direct Injection Liquid Chromatography-Tandem Mass Spectrometry
Wenwei LIU ; Jingping ZHANG ; Pengfei ZHU
Journal of Environment and Health 1993;0(01):-
0.99).The limits of detection were below 0.5 ?g/L.The rates of recovery for the spiked samples ranged from 70.1% to 117.9% and the relative standard deviations(RSD) were between 0.4%-16.1%.Conclusion The method is simple,rapid,accurate and is applicable to the simultaneous determination of multi-pesticide residues in drinking water.
9.Relationship of D-dimer with the prognosis of non-Hodgkin's lymphoma
Wenhua JIANG ; Jun GAO ; Pengfei LIU
Chinese Journal of Clinical Oncology 2013;(14):838-841
Objective:Increased D-dimer level has been recently correlated with the progression and high mortality rate of some cancers. This study aimed to determine whether the plasma D-dimer level was a predictor of non-Hodgkin lymphoma (NHL). Methods:Clinical data of 425 with NHL were retrospectively reviewed. Variables such as clinicopathological factors, plasma D-dimer levels, and the international prognostic index (IPI) were evaluated. Results: The plasma D-dimer level was closely correlated with the IPI. The overall 1-, 3-, and 5-year survival rates of the low plasma D-dimer levels were 80%, 75%, and 50%;those for the high plasma D-dimer levels were 41%, 33%, and 9%, respectively (P<0.001). Compared with an IPI of zero or one, IPI values≥4 were predictive of poor prognosis (P<0.001). The Ann Arbor stage, pathological classification, plasma D-dimer level, and IPI were found to be significantly as-sociated with mortality. However, similar to IPI, the plasma D-dimer level was the independent risk factor affecting multivariate analy-sis. Conclusion:High D-dimer levels are a potential prognostic marker for NHL.
10.Intravascular stent implantation in treating patients with symptomatic vertebral artery kinking
Xiaoyong LIU ; Zhenhua WANG ; Pengfei HOU
Chinese Journal of Postgraduates of Medicine 2016;39(8):734-737
Objective To evaluate the feasibility and safety of stent implantation in treating patients with symptomatic vertebral artery kinking. Methods Forty-two patients with vertebral artery kinking confirmed by digital subtraction angiography and accorded with the stent implantation indications were chosen in our study; these patients were performed stent implantation. The stenosis and haemodynamics changes, and recent and postoperative complications were observed; Malek scale was adopted to evaluate the clinical efficacy during the 1-year follow-up. Results The success rate of stent implantation for patients with symptomatic vertebral artery kinking was 100%(42/42). The percentage of stenosis was significantly reduced from (75.6 ± 13.5)%to (8.3 ± 3.1)%after stenting, and the mean flow velocity of kinking lesion was obviously decreased from (49.5 ± 12.4) cm/s to (31.7 ± 15.0) cm/s, and there were statistical differences (P<0.01). The cerebellum hematoma was noted in 1 patient , subcutaneous hematoma of puncture point appeared in 2 and femoral artery pseudoaneurysm after the stenting in 1;all these complications did not cause serious consequences. Malek scale indicated that 36 cases got 1 point,4 cases got 2 points, 1 case got 3 points, 1 case got 4 points and no one got 5 points;36 patients (85.7%, 36/42) were asymptomatic during the 1-year follow-up;no significant in-stent restenosis was found. Conclusions Symptomatic vertebral artery kinking can be treated safely and effectively with stent implantation.