To investigate the correlation between p16 gene mutation and laryngeal cancer biological behavior as well as its prognosis in laryngeal cancer.Method:24 speciments of primary laryngeal cancer and 10 speciments with benign lesion in larynx were examined for mutations in exon2 of p16 by using PCR-SSCP silver stainning technique.Result:Mutations frequency of laryngeal cancer was62.5% (15/24).Nothing was found in 10 cases with laryngeal benign lesion.Conclusion:There is a strong correlation between p16 gene mutation and the biological behavior of chinese laryngeal cancer, such as histologic differentiation, invasion stage, and regional lymph nodes metastasis(P≤0.05).PCR-SSCP silver tainning technique is one of the most sensitive and simplest measure for detecting genetic mutation.It is worth using in clinical laboratory because of its readiness, repetition and lower cost.

Objective To investigate the adhesion molecule expression and functional status of platelets in lung cancer patients, and their relations with disease progression. Methods Using flow cytometry to measure the expression of surface antigens and functional status of platelets in 60 healthy control group, and 164 lung caneer patients. Results Comparing with control group, the expression in early group and mid term group(A group) of CD31, CD36, CD62, CD63 increased, and there is no significant meaning in the differences of surgery group (B group) of CD31, TSP, CD36, CD62, CD63. The expression in advanced group (C group) of CD31, TSP, CD36, CD62, CD63 increased. Comparing with A Group, the expression in B Group of CD36, CD62, CD63 decreased. The expression in C group of CD31, TSP, CD36, CD62, CD63 increased. Comparing with the small cell lung cancer, the expression of adenocareinorna of TSP, CD36,, CD62, CD63, squamous cell carcinoma of CD31, CD62, CD63, and alveolus cancer of CD31, TSP, CD63, all decreased. Conclusion The high level expression of platelet activation exists in patients with lung cancer of different stage, and decreased after operation. Platelet activation expressed significantly in the advanced stage of small cell lung cancer.

Objective To study the effects of platelet activation on the metastasis and prognoies of lung cancer. Methods Radio-immunity and ELISA were employed to detect the TXB_2,DH-TXB_2,TSP, β-TG, GMP-140,CGMP and FN of 168 cases of lung cancer patients (lung cancer group) and 80 cases of healthy persons control group. The lung cancer group included two subgroups: earlier and metaphase group (n=51) and advanced group (n=17), 39 cases in the former group underwent operation (after operation group). Results (1)Compared with control group, the levels of DH-TXB2,TSP,β-TG,GMP-140,CGMP in group of earlier and metaphase lung cancer increased and FN decreased. TXB2,DH-TXB2,TSP,β-TG,GMP-140,CGMP in advanced group increased and FN decreased;DH-TXB2 and GMP-140 increased in group of after operation. (2)Compared with group of earlier and metaphase lung cancer,the levels of DH-TXB2,TSP,β-TG,GMP-140,CGMP in group of after operation increased and FN decreased; In advanced group, levels of TXB2, DH-TXB2,TSP,β-TG,GMP-140,CGMP increased and FN decreased. (3)In the lung cancer group, CGMP was positively correlated with DH-TXB2,TSP,β-TG and GMP-140. (4)Compared with control group,TXB2, DH-TXB2, TSP,β-TG,GMP-140 and CGMP in group glandular cancer and small cell carcinoma cases increased,FN decreased;In squamous cancer, the levels of TXB2, DH-TXB2,GMP-140 and CGMP increased and FN decreased. (5)Compared with small cell carcinoma cases, DH-TXB2 decreased in cases of glandular cancer; GMP-140 decreased in squamous cancer. Conclusions Activations of platelet generally emerged with lung cancer patients, platelet activation was severe in advanced cancer patients. Activations of platelet, after operation, is obviously eased. The level of platelet activation marker is possibly related with histological classification of lung cancer.

Objective The purpose of the present study was to investigate the effect of peroxisome proliferator-activated receptors δ（PPAR δ）activation with dietary GW610742X on the expression of tenascin-C in the infarcted and remodeling myocardium.Methods Sixty male Wistar rats were divided into four groups,including control group,sham group,myocardial infarction（MI） group,and MI＋GW610742X（GW）group.The left coronary artery was ligated to establish the MI model.PPAR δ activator GW610742X（100mg/kg/d）was administrated into the rats of GW group.At 3 months after procedure,the expression and distribution of tenascin-C in left ventricular free wall from each group were examined by Western blotting and immunofluorescence,respectively.Results After 3 months following procedure,there were obvious necrosis and fibrosis in left ventricular free wall from MI group.The expression of tenascin-C in MI and GW group was significantly higher than those in control and sham group（P 〈 0.01）.Moreover,tenascin-C expression in GW group was remarkably decreased compared to MI group（P 〈 0.05）.Additionally,tenascin-C expression in sham group was similar to that in control group（P 〉 0.05）.Conclusion The tenascin-C is upregulated in infarcted myocardium during the remodeling process,which can be significantly attenuated by PPAR δ activation.

Objective To investigate the changes of T lymphocyte immune balance in the patients with COPD.Methods Forty-eightpatients with AECOPD from January 2015 to December 2016 in this hospital were selected as study group and 30 healthy subjects as control.T cells and cytokines in peripheral blood were detected by flow cytometry and ELISA,respectively.The levels of them were compared between the two groups.The correlations of them and principal components were analyzed among the two groups.Results (1) CD8+T cells in the study group decreased [23.8％(17.5％,30.1％) vs.28.2％(23.8％,31.5％),P＜0.05],TregandTh17increased[8.5％(8.3％,9.0％) vs.5.6％(4.9％,6.1％),P＜0.01;2.9％(2.8％,3.0％) vs.1.2％(1.2％,1.4％),P＜0.01],respectively.(2)In the study group,IL-12 [54.97 pg/mL(31.20,161.59) pg/mL],IL-22 [17.70 pg/mL(15.60,35.99) pg/mL],IL-23[120.28 pg/mL(82.97,169.27) pg/mL],IL-23R [0.15 pg/mL(0.15,0.71)pg/mL]and TNF-α[1 000 pg/mL(1 000,1 000)pg/mL] were higher than that of the control group[31.20 pg/mL(31.20,56.23)pg/mL,15.60 pg/mL(15.60,15.60)pg/mL,78.10 pg/mL(78.10,99.08)pg/mL,0.15 pg/mL(0.15,0.15)pg/mL,722.16 pg/mL(494.25,941.44)pg/mL,P＜0.05].(3)Correlation analysis showed that there was a negative correlation between Th17 and Treg (r=-0.883,P＜0.01) in the study group (r=-0.883,P＜0.01),and IL-22 was positively correlated with IL-23 (r=0.340,P＜0.05).In the control group,there was a negative correlation between CD4+T cells and CD8+ T cells,Th17 and CD3+ T cells,Th17 and CD8+T cells (r was-0.578,-0.393 and-0.569,respectively,P＜0.05),and a positive correlation between Th17 and Treg,IL-23 and CD4+T cells,TNF-α and DNT(r=0.403,0.440 and 0.392,respectively.(4) There were 5 main components among each group,but the variable factors differed in the study group from the controls,as that:Th17/Treg,Th17,Treg vs.CD4+ T/CD8+ T cells,CD4+ T cells,CD8+ T cells and CD4+T/CD8+T cells,CD8+ T cells vs.Th17/Treg,Treg and CD4+ T cells,CD3+ T cells vs.IL-12,IL-23R andIL-12,IL-23R vs.CD3+ T cells and IL-23,IL-22 vs.TNF-α,DNT.Conclusion The increasing immune function of Th17 cells with IL-22 and IL-23 may be involved in the pathological mechanism of COPD,which accompanied with the weakened toxicity of CD8+T cells and regulation of DNT.

Objective:To analyze the thalassemia screening and genotyping in Southwest Guizhou Autonomous Prefecture (referred it as Qianxinan Prefecture), this essay provides the theoretical reference for clinical diagnosis of thalassemia and suspicious cases.Methods:The pregnant women, spouses and neonates who were screened for thalassemia gene in Qian Xi Nan People's Hospital from January 2016 to December 2020 were selected as the research subjects, and peripheral blood or umbilical cord blood samples were collected to extract DNA. The gap-polymerase chain reaction (Gap-PCR) and next-generation sequencing (NGS) technology were used to screen thalassemia, and ArcMap 10.8 software was adopted to map the local spatial distribution of thalassemia based on the screening data.Results:A total of 67 185 cases of people from various regions in Qianxinan Prefecture were screened, and 8 202 cases of thalassemia gene carriers were detected, with a total detection rate of 12.21%. Among them, 5 660 cases of α-thalassemia, with a detection rate of 8.42%; 2 132 cases of β-thalassemia, with a detection rate of 3.17%; 410 cases of αβ complex thalassemia, with a detection rate of 0.61%. In the detection of thalassemia genes, 27 genotypes of α-thalassemia were detected, mainly αα/-α 3.7, accounting for 41.13% (2 328/5 660); 33 genotypes of β-thalassemia were detected, mainly β CD17(A>T)/β A, accounting for 44.09% (940/2 132); 55 genotypes of αβ complex thalassemia were detected, and αα/-α 3.7 complexed β CD17(A>T)/β A dominated, accounting for 21.22% (87/410). There were high incidence areas in the spatial distribution of thalassemia, which were Wangmo County and Ceheng County, and the detection rate was 26.76% (1 438/5 374), 24.39% (1 314/5 387), respectively. Conclusions:The detection rate of thalassemia gene in Qianxinan Prefecture is relatively high, mainly αα/-α 3.7 genotype of α-thalassemia. Wangmo County and Ceheng County are high-incidence areas of thalassemia, and screening efforts should be continued.