1.Analytical performance evaluation of HBsAg ELISA kit using CLSI EP1 2-A2 document
International Journal of Laboratory Medicine 2014;(12):1622-1623
Objective To evaluate the performance of enzyme linked immunosorbent assay(ELISA)reagent kit of hepatitis B surface antigen(HBsAg)with Clinical and Laboratory Standards Institute(CLSI)document EP12-A2,and to compare two different manufacturer kits′performance.Methods According to CLSI document EP12-A2,to evaluate the performance of two different manufacturers′HBsAg ELISA kits.Results The positive rates both were ≥95% by using the kits of two manufacturers to detect the same sample with 120%of the critical concentration.The negative rates were both ≥95%by using the kits of two manufactur-ers to detect the same sample with 80% of the critical concentration.The intra assay coefficients of variation were ≤15%,and the interassay coefficients of variation were ≤20%.The sensitivities of two manufacturers′kits were respectively 94.2%(95%CI:84.3%-98.0%)and 92.3%(95%CI:81.8%-97.0%),and the specificities were 98.0%(95%CI:89.5%-99.6%)and 100.0%(95%CI:92.8%-100.0%).The 95%interval of sensitivity of two manufacturers′s kits was 5.46%-10.19%,and which of specificity of two manufacturers′s kits was -2.00%-5.32%.Conclusion The kits of two manufacturers can provide stable re-sults of HBsAg detection with concentrations ±20% outside the critical concentrations at the cutoff point with high sensitivity and specificity.Both of the kits have no significant differences in sensitivity and specificity.
2.Clinical observation on combined treatment of chronic nephritis proteinuria,a report of 22 cases
Chinese Journal of Primary Medicine and Pharmacy 2016;23(22):3452-3455
Objective To observe the curative effect of Zhengqingfengtongning release tablets and lumbroki-nase enteric -coated capsules and losartan potassium tablets joint for the treatment of chronic nephritis proteinuria, and explore its mechanism.Methods 42 patients with chronic nephritis were randomly divided into two groups. 20 cases in the control group were given losartan potassium tablets,50mg,1 ~2 times a day.22 cases in the treatment group received Zhengqingfengtongning release tablets 120mg,2 times a day,lumbrokinase enteric -coated capsules 600 000u,3 times a day on the basis of the control group.The 24h urine protein,liver and kidney function before and after the treatment were observed.Results 20 days after treatment,24h urinary protein in the treatment group decreased 57.08%,which in the control group decreased 41.59%,the difference was statistically significant (t =2.39,P <0.05).30 days after treatment,24h urinary protein in the treatment group decreased 81.28%,which in the control group decreased 52.34%,the difference was statistically significant (t =3.65,P <0.01 ).Renal function change had no significant difference between the two groups.Conclusion Zhengqingfengtongning release tablets and lumbrokinase enteric -coated capsules combined with losartan potassium tablets in the treatment of chronic nephritis proteinuria work fast,and has good curative effect,less side effects,and is worth to recommend.
4.Study on the correlation between red cell distribution width and microalbuminuria in patients with chronic heart failure
Tianjin Medical Journal 2015;(9):1018-1021
Objective To observe changes of red blood cell distribution width (RDW) and trace albumin urine (MAU) in patients with chronic heart failure (CHF) and to explore the relationship between them and cardiac function classification. Methods A total of 190 patients with CHF were divided into mild group (NYHA grade II), moderate group (NYHA gradeⅢ) and severe group (NYHA gradeⅣ), according to the grade of cardiac function. A total of 100 subjects with normal physi?cal examination during the same period were selected as the control group. The changes of MAU, urinary creatinine (Scr) ra?tio (UACR), RDW, Scr, hemoglobin (Hb), type B urine sodium titanium (BNP) and left ventricular ejection fraction (LVEF)were compared between four groups. The correlation between UACR, RDW, Scr, Hb, BNP and LVEF were analyzed. Re?sults The levels of RDW, Scr, BNP, hypersensitive C-reactive protein (hsCRP), LVEDd, LVM, LVMI and UACR were sig?nificantly higher in chronic heart failure group than those of control, showing a trend of increase gradually with the rising of heart function classification (P<0.05). The values of Hb and LVEF showed a gradually decreasing trend with the increased heart function classification (P < 0.05). The values of UACR and RDW showed a gradually increasing trend with the in?creased heart function classification (P<0.05). There was a positive correlation between UACR and RDW, and both had a positive correlation with BNP, and a negative correlation with LVEF and Hb(P<0.05). Conclusion RDW and MAU are re?lated to the cardiac function classification, and both can be used for the evaluation of the prognosis in patients with CHF.
5.Effects of Rho associated kinase inhibitors on glaucoma and current researches
Chinese Journal of Experimental Ophthalmology 2017;35(4):381-384
Glaucoma is one of the main causes of blindness in the world,resulting from a slow and progressive loss of retinal ganglion cells (RGCs) and their axons.So far,intraocular pressure reduction is the main treatment modality to control disease progression.However,not all the patients benefit from this therapy,and the pathophysiology of glaucoma is not always associated with an elevated intraocular pressure.These limitations,together with the multifactorial etiology of glaucoma,urge the pressing medical need for novel and alternative treatment strategies.Such new therapies should focus on not only preventing or retarding RGCs death,but also repairing the injured axons.Glaucoma optic nerve protection therapy is becoming a hot spot of current research,especially Rho associated kinase (ROCK) inhibitors as a new drug for the glaucomatic neuroprotection,which can reduce intraocular pressure,inhibit scar formation after anti-glaucoma surgery,improve blood circulation,prevent RGCs death and axonal degeneration and induce axon regeneration.In this review,we focused on the research status and progress of the classical signal pathway of ROCK inhibitor in glaucoma optic nerve protection.
6.Diagnosis and Treatment of Patients with Refractory Functional Gastrointestinal Disorders Accompanying with Psychological Disorders
Chinese Journal of Gastroenterology 2016;21(5):311-314
Patients who have functional gastrointestinal disorders(FGIDs)often together with psychological disorders and damaged quality of live. Management of FGIDs patients failed to conventional drug therapy,so-called the refractory FGIDs,is a challenge for gastroenterologists. Till now,FGIDs are still not fully recognized and clarified and having only limited therapeutic approaches. In this article,we reviewed the clinical characteristics of refractory FGIDs accompanying with psychological disorders and the progress in research on their diagnosis and treatment for improving the understanding and formularizing the management of this disease.
7.Research progress on regulatory mechanism of liver cancer stem cells
Chinese Journal of Hepatobiliary Surgery 2014;20(12):900-904
The theory of cancer stem cells proposed that recurrence and metastasis of liver cancer are closely related to liver cancer stem cells.The traditional surgical treatment of liver cancer simply kills those rapidly proliferating tunor cells instead of eliminating hepatic cancer stem cells which play decisive role in recurrence and metastasis.As far as people have concerned,there are many signaling pathways and regulatory factors modulating liver cancer stem cells,such as the Wnt/β-catenin pathway,TGF-β pathway,Notch pathway,Hedgehog pathway,hepatitis B virus,as well as epigenetics.Further studies on regulatory mechanisms of liver cancer stem cells are of great significance,in hope of providing new evidence for treatment and prevention of recurrence and metastasis of liver cancer.
9.CXCL4 and its receptor in colorectal cancer
Journal of International Oncology 2013;(5):362-365
CXC chemokine ligand 4 (CXCL4) is a platelet-derived chemokine,and it belongs to CXC subfamily.Its receptor is CXC chemokine receptor 3 (CXCR3),which belongs to the seven transmebrane G-protein-coupled receptor family,and its coreceptor is glycosaminoglycan (GAG).CXCL4 and its receptors take part in the regulation of many biological processes,such as immune regulation,inflammatory response,endothelial cell proliferation and migration and angiogenesis.Recent studies show that CXCL4 and its receptor have significant influence on the cell growth,angiogenesis,invasion and metastasis of colorectal cancer,which offers a new perspective to explore the mechanism of colorectal cancer and its targeted therapy.
10.Gastrointestinal malignancies and cardiovascular diseases
Journal of International Oncology 2013;40(9):692-695
Nowadays,antiplatelet and anticoagulant drugs have been applied to a variety of cardiovascular diseases,such as atrial fibrillation and coronary artery disease.Several clinical studies show that there is a higher prevalence of gastrointestinal cancers in patients with cardiovascular disease.In addition,in patients taking antithrombotic drugs,positive fecal occult blood test (FOBT) improves the sensitivity for early detection of colorectal malignancies.This suggests that antithrombotic drugs may facilitate the detection of unrecognized cancers in patients with cardiovascular disease.However,there is no established evidence concerning whether more aggressive gastrointestinal tract screening will reduce the mortality of cancer in cardiology patients.But in an era of multiple antithrombotic drug usage,when patients appear unexplained anemia,gastrointestinal symptoms or positive FOBT,timely gastrointestinal tract screening is helpful to find concomitanted malignancies in these patients.