OBJECTIVE To monitor the sterilization effect of hydrogen peroxide gas plasma sterilizer with process challenge derice(PCD).METHODS Hydrogen peroxide gas plasma sterilizer was used to sterilize different material and structure items in simulation field sterilization trial.The test pieces have been cultured for 7 days at 37 ℃.Make the test records in detail.RESULTS The hemostatic forceps,surface of lines and biological indicators,as well as 300 mm stainless steels tube and 2000 mm Teflon tube were sterilized successful.But 600 mm and 300 mm stainless steels of low temperature did not past the challenge tests.The results of test surface and test lumen were inconsistent.CONCLUSIONS PCD is need to be introduced in monitoring sterilization effect of hydrogen peroxide gas plasma sterilizer.

saline group(all P

Objective To discuss the expression of X chromosome coupled zinc finger protein(ZFX) in the serum and pathology of patients with advanced non-small cell lung cancer before and after treatment and its evaluation in the chemotherapy efficacy.Methods Forty cases(NSCLC group)with non-small cell lung cancer treated in Baotou Central Hospital from January 2013 to October 2014 were retrospectively analyzed.The control group included 40 normal people who may have tumor by normal physical examination.Based on the blood tests of research subjects before and after treatment,the peripheral blood ZFX content was detected by the quantitative detection, ZFX expression was detected by tissue morphological identification and immunohistochemical methods.Results The level of adenocarcinoma ZFX serum was(15.32± 2.01)μg/L, squamous cell carcinomas ZFX serum level was(11.65±4.12)μg/L,the difference between the two groups was statistically significant(t=3.216,P<0.05); the ZFX serum level of non-small cell lung cancer group was (17.55±0.37)μg/L before treatment,and was(6.35± 0.06)μg/L after treatment which was significantly lower,the difference was statistically significant(t=188.97,P<0.05); the serum level of non-small cell lung cancer group before treatment was(17.55±0.37)μg/L,after treatment was(6.35±0.06)μg/L,compared with (2.29± 0.01)μg/L,(2.29 ± 0.01)μg/L in the control group,the differences were statistically significant (before treatment:t=260.75,after treatment t=422.14,P<0.05); the expression of ZFX in adenocarcinoma was(15.32±2.01)ug / L,higher than that of squamous cell carcinoma((11.65±4.12)μg/L),the difference was statistically significant(t=3.216,P<0.05);the expression of ZFX in CR+PR group before treatment was (17.35±0.46)μg/L,higher than that after treatment((6.24±0.11)μg/L),the difference was statistically significant(t=142.88,P<0.05).Conclusion The expression of ZFX in peripheral blood serum and pathology may be a marker for the diagnosis of non-small cell lung cancer,and it has guiding significance for the diagnosis and curative effect evaluation of lung cancer.

Programmed death-1 and programmed death-ligand 1(PD-1/PD-L1)are regulatory immune checkpoint molecules that inhibit T cell activation and,therefore,play an important role in tumor immunotherapy.In recent years,increasing numbers of targeted therapeutic agents have been developed,but single immune checkpoint blockers cannot completely inhibit tumor occurrence,and tumor escape sporadically occurs.Consequently,combination therapy of targeted drugs is considered a useful method to inhibit tumorigenesis and tumor development.T cell immunoglobulin and immunoreceptor tyrosine-based inhibition motif(ITIM)domain(TIGIT)is an inhibitory type 1 poliovirus receptor that has recently been a hotspot of targeted drug therapy research.It has been shown that the combination therapy of TIGIT plus PD-1/PD-L1 can reduce tumor escape and inhibit tumorigenesis more effectively.Therefore,this review summarizes and discusses the progress on the dual blockade of TIGIT and PD-1/PD-L1 pathways in tumor immunotherapy to provide a theoretical basis for tumor im-munotherapy.

The incidence rate of drug-induced liver injury （DILI） is increasing year by year with unknown mechanisms， and the treatment methods for DILI mainly include drugs， liver support systems， and liver transplantation， all of which have certain limitations. Therefore， the search for safer and more effective treatment methods has become a research hotspot at present. Studies have shown that mesenchymal stem cells and their exosomes can alleviate liver injury by reducing liver inflammation， promoting hepatocyte proliferation and regeneration， inhibiting the apoptosis of hepatocytes， improving oxidative stress， and regulating immunity. This article briefly reviews the role of mesenchymal stem cells and their exosomes in the treatment of DILI， so as to provide a reference for further research.

Autoimmune hepatitis （AIH） is a type of chronic hepatitis caused by the attack of hepatocytes by the autoimmune system， and with the prolongation of disease course， it may gradually progress to liver cirrhosis and even hepatocellular carcinoma. Although great achievements have been made in the understanding and treatment of AIH， its etiology and pathogenesis still remain unclear. T cells play a crucial role in the development and progression of AIH， and by focusing on follicular helper T cells， this article elaborates on the research advances in follicular helper T cells in AIH， in order to provide new ideas and strategies for the clinical treatment of AIH.