KISS-1和VEGF—C在乳头状甲状腺癌组织中的表达及临床意义

目的研究KISS—1、VEGF—C在乳头状甲状腺癌组织中的表达情况，分析两者表达与乳头状甲状腺癌临床病理特征的关系以及两者的相关性。方法收集乳头状甲状腺癌组织病理标本48例及其正常甲状腺组织20例，采用免疫组织化学SP法检测KISS—1、VEGF—C在乳头状甲状腺癌组织中的表达情况，分析KISS—1、VEGF—C在乳头状甲状腺癌组织中阳性表达率与临床病理学特征之间的关系以及两者表达之间的相关性。结果KISS-1、VEGF—C在乳头状甲状腺癌组织和正常甲状腺组织中的阳性表达率之间具有显著性差异（P〈0．01）。KISS-1、VEGF—C在乳头状甲状腺癌组织中的阳性表达率与肿瘤大小、颈部淋巴结转移、临床分期相关且均有显著性差异（P〈0．05）。KISS-1和VEGF—C的表达与患者的性别、年龄均无关（P〉0．05）；KISS-1与VEGF—C在乳头状甲状腺癌组织表达存在负相关关系（P〈0．05）。结论KISS—1、VEGF—C的表达水平与乳头状甲状腺癌有关，且与肿瘤大小、颈部淋巴结转移状况、临床分期相关，与患者性别、年龄无关。KISS-1在乳头状甲状腺癌组织的表达与VEGF—C呈负相关关系。KISS-1、VEGF—C联合检测可作为乳头状甲状腺癌恶性潜能的判断指标。     

Changes in gene expression induced by histamine,fexofenadine and osthole: Expression of histamine H1 receptor,COX-2, NF-κB,CCR1, chemokine CCL5/RANTES and interleukin-1β in PBMC allergic and non-allergic patients

IntroductionFexofenadine (FXF) is a third-generation antihistamine drug and osthole is assumed as a natural antihistamine alternative. This paper compares results of histamine, FXF and osthole impact on HRH-1, COX-2, NF-κB-p50, CCR1 mRNA expression. We also measured mRNA expression of IL-1β and CCL5/RANTES in incubated peripheral blood mononuclear cells (PBMC) to compared how histamine, FXF and osthole had influence on expression level and interacts on product secretion.ObjectiveThe purpose was to investigate expression pattern in asthma PBMC.MethodsThe cultures were treated 72 h with FXF and osthole. We measured mRNA expression of histamine HRH-1, COX-2, NF-κB-p50, CCR1, IL-1β and CCL5/RANTES with Real-Time PCR (RT-PCR).ResultsThe present study suggest that osthole may be a potential inhibitor of histamine H₁ receptor activity. We also demonstrated that cells cultured with histamine increase COX-2 mRNA expression and osthole reduce it.ConclusionAllergy remains one of the most common chronic diseases in Europe and it is rapidly approaching epidemic proportions; with current predictions estimating that the number of allergy-afflicted will equal the healthy population by 2020. It is therefore paramount to find new pharmaceuticals which successfully combat allergic disease.     

Immunological implications of diverse production approaches for Chikungunya virus-like particle vaccines

Chikungunya virus (CHIKV), an arbovirus from the Alphavirus genus, causes sporadic outbreaks and epidemics and can cause acute febrile illness accompanied by severe long-term arthralgias. Over 20 CHIKV vaccine candidates have been developed over the last two decades, utilizing a wide range of vaccine platforms, including virus-like particles (VLP). A CHIKV VLP vaccine candidate is among three candidates in late-stage clinical testing and has potentially promising data in nonclinical and clinical studies exploring safety and vaccine immunogenicity. Despite the consistency of the CHIKV VLP structure, vaccine candidates vary significantly in protein sequence identity, structural protein expression cassettes and their mode of production. Here, we explore the impact of CHIKV VLP coding sequence variation and the chosen expression platform, which affect VLP expression yields, antigenicity and overall vaccine immunogenicity. Additionally, we explore the potential of the CHIKV VLP platform to be modified to elicit protection against other pathogens.     

Decreased expression of Neurensin-2 correlates with poor prognosis in hepatocellular carcinoma

AIM： To investigate the expression of Neurensin-2 （NRSN2） in hepatocellular carcinoma （HCC） and its prognostic values in predicting survival. METHODS： The expression and prognostic significance of NRSN2 in HCC was examined by performing immunohistochemical analysis using a total of 110 HCC clinical tissue samples, and Western blotting analysis to further confirm the result. RESULTS： Decreased NRSN2 expression was shown in 70.9% cases. Loss of NRSN2 expression in HCC was significantly related to tumor size （P = 0.006）. Larger tumor size was related to negative expression of NRSN2. Patients showing negative NRSN2 expression had a significantly shorter overall survival than those with positive expression （P = 0.008）. Multivariate Cox regression analysis indicated that NRSN2 expression level was an independent factor of survival （P = 0.013）. Western blotting analysis further confirmed decreased expression of NRSN2 in tumor tissues compared with non-tumorous tissues. CONCLUSION： Our study indicated that NRSIV2 could be a tumor suppressor gene for HCC and a candidate biomarker for long-term survival in HCC.     

脂联素受体的表达与调节

脂联素受体1在骨骼肌中有丰富表达,而脂联素受体2主要在肝中表达。另外,两种脂联素受体也在胰岛β细胞、脂肪组织、单核细胞、巨噬细胞、成骨细胞、心肌组织和胎盘组织中表达。生长激素、胰岛素以及过氧化物酶体增殖物活化受体(PPAR)α、PPARγ和肝X受体激动剂等可影响脂联素受体的表达。研究脂联素受体在不同组织、细胞中的表达与调节可了解其组织特异性作用。