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Pathology, Research and Practice

Ryuji Ohashi, Keiko Yanagihara, Shigeki Namimatsu, Takashi Sakatani, Hiroyuki Takei, Zenya Naito, Akira Shimizu
Breast carcinoma with osteoclast-like giant cells (OGCs) is a rare tumor; however, their clinicopathological aspects remain unclear. We described the clinicopathological characteristics of 8 patients with breast carcinoma with OGCs. Immuno-phenotypes of the OGCs were comparatively examined with that of foreign body giant cells (FBGCs) in 4 cases of granulomatous reaction (GR) without cancerous elements. In most cancers, tumors displayed cribriform and tubular growth patterns. Three cases showed moderate to high nuclear grade, while all the other tumors had low nuclear grade...
November 9, 2017: Pathology, Research and Practice
Liugen Gu, Juan Zhao, Shiqing Zhang, Weisong Xu, Runzhou Ni, Xiaojuan Liu
Apoptosis in intestinal epithelial cells (IECs) prevents the development of Crohn's disease (CD), a type of inflammatory bowel disease (IBD). Runt-related transcription factor 2 (Runx2) inhibits apoptosis in osteosarcoma-derived U2OS cells via down-regulating the transcriptional activity of p53. However, the expression and function of Runx2 in CD remain unclear. In this study, Runx2 protein levels were decreased in the intestinal epithelial cells (IECs) of CD patients and in a mouse 2, 4,6-trinitrobenzenesulfonic acid (TNBS)-induced colitis model; in contrast, the expression levels of p53 and Bax, a p53-target gene, were increased...
November 8, 2017: Pathology, Research and Practice
Won Gi Hong, Young San Ko, Jung-Soo Pyo
OBJECTIVE: The aim of this study was to elucidate the clinicopathological significance and prognostic role of microvessel density (MVD) in gastric cancer (GC) through a meta-analysis. METHODS: This meta-analysis included 4094 patients from 26 eligible studies. We investigated the correlation between MVD and clinicopathological characteristics, including survival rate. In addition, subgroup analysis based on microscopic magnification among evaluation criteria of MVD was performed...
November 8, 2017: Pathology, Research and Practice
Jae Han Jeong, Nae Yu Kim, Jung-Soo Pyo
OBJECTIVE: This study aimed to confirm the prognostic roles of lymph node (LN) micrometastasis (LNMM) in non-small cell lung cancer (NSCLC) through a meta-analysis. METHODS: This study included 2026 NSCLC cases without detection of LN metastasis in histologic examination. We investigated the detection rate of LNMM in early-stage NSCLC and analyzed the correlation between LNMM and the rates of recurrence and survival. RESULTS: The range of detection rates of LNMM was 3...
November 8, 2017: Pathology, Research and Practice
Daniele Xavier Assad, Gabriel Alvares Borges, Samuel Ramalho Avelino, Eliete Neves Silva Guerra
The PI3K/AKT/mTOR signaling pathway is frequently activated in HPV-positive cervical squamous cell cancer (CC). This study investigated the biological effects of mTOR inhibitors associated with radiotherapy in a CC cell line (HeLa). A human keratinocyte cell line (HaCaT) was used as control. Temsirolimus, everolimus, resveratrol, curcumin and epigallocatechin gallate (EGCG) were the mTOR inhibitors assessed. The 50% cell cytotoxicity rate (CC50) for each treatment was determined by MTT cell viability assay...
November 2, 2017: Pathology, Research and Practice
Won-Young Park, So-Jeong Lee, Young-Keum Kim, Ahrong Kim, Do Youn Park, Bong-Eun Lee, Geun-Am Song, Gwang Ha Kim
AIMS: Endoscopic resection is a safe and effective method to treat gastric epithelia dysplasia (GED). However, the development of metachronous and synchronous lesions after treatment has become a major concern. In this study, we investigated clinicopathologic features of 105 GED lesions from endoscopic resections between January 2008 and December 2009. Our goal is to find histologic factors that predict synchronous and metachronous lesions after ESD treatment. We assessed the degree of intestinal metaplasia (IM) and atrophy, type of IM, presence of gastritis cystica profunda, and crypt dysplasia in the adjacent mucosa...
October 28, 2017: Pathology, Research and Practice
Veeran Veeravarmal, Ravi David Austin, Siddavaram Nagini, Mohamed Hanifa Mohamed Nassar
INTRODUCTION AND AIMS: The possible reason suggested for epithelial atrophy in oral submucous fibrosis (OSMF) is ischemia. Dysregulation in the epithelial proliferation and maturation is also thought to be a cause. The β1 integrin identifies the oral epithelial stem cells. The changes induced by the arecanut on these cells may result in epithelial alterations. The aim of this study is to evaluate the stem cells distribution and percentage by assessing the β1 integrin expression. MATERIALS AND METHODS: The study included normal oral mucosa (15 cases) and disease group (97 cases)...
October 26, 2017: Pathology, Research and Practice
Taiyang Shi, Qinfang Hua, Zhipeng Ma, Qijun Lv
BACKGROUND: Hepatitis B Virus X (HBx) Protein encoded by HBV is believed to be the major player in the process of HBV-induced oncogenesis. Ectopic expression of miR-200a-3p was reported to be associated with diverse tumorigenesis. This study aimed to better understand the role of miR-200a-3p and its correlation with HBx in HBV-induced hepatocellular carcinoma (HCC). METHODS: In this report, we examined the gene expression using quantitative RT-PCR and protein expression using Western blotting analysis...
October 26, 2017: Pathology, Research and Practice
Gen-He Wang, Peng-Fei Wu, Long-Hui Zhang, Ping Fang, Yong Chen, Gang Zuo, Yi-Qing Wu, Shu-Hong Wang, Guo-Ping Sun
Evidences suggested that combined blockade of the VEGF and EGFR pathways can improve the treatment efficacy of non-small-cell lung cancer (NSCLC). In our previously clinical practice, we observed that thalidomide, a potent VEGF inhibitor, can significantly decrease the tumor size of one EGFR-TKI resistance patient with lung cancer cachexia. In this pilot study, we tried to assess the efficacy and toxicity of the combination therapy of erlotinib and thalidomide in advanced NSCLC patients with acquired resistance to erlotinib...
October 18, 2017: Pathology, Research and Practice
Poliana Ramos Braga Santos, Claúdia Malheiros Coutinho-Camillo, Fernando Augusto Soares, Valéria Souza Freitas, Deise Souza Vilas-Bôas, Flávia Caló Aquino Xavier, Clarissa Araújo Gurgel Rocha, Iguaracyra Barreto de Araújo, Jean Nunes Dos Santos
The aim of this study was evaluate the expression profile of microRNAs related to mast cells activation and angiogenesis in salivary glands tumors. METHOD: We have analyzed the expression of miR-9, miR-16, miR-17, miR-132, miR-195 and miR-221 by real-time RT-PCR, in 11 adenoid cystic carcinomas, 9 mucoepidermoid carcinomas and 11 pleomorphic adenomas. Immunohistochemical investigation was performed to detect mast cells tryptase and CD-34 for microvessels biomarkers. miR-16, miR-17, miR-132, miR-195 and miR-221 showed a decreased expression, whereas miR-9 showed an increased expression in most cases compared to normal tissues...
October 18, 2017: Pathology, Research and Practice
Zhi-Hong Xian, Chun Qin, Wen-Ming Cong
Intraductal papillary neoplasm of bile duct (IPNB) is characterized by a spectrum of diseases ranging from low-grade intraepithelial neoplasia to invasive carcinoma. In the present study, we aimed to investigate immunophenotypic features and KRAS mutations in relation to pathological subtypes and grades in Chinese patients with IPNBs. A total of 46 patients with IPNBs and 11 invasive adenocarcinomas arising in IPNBs (invasive IPNBs) were enrolled and clinicopathological data were analyzed. It was found that CK7 was expressed in 42 of the 46 neoplastic lesions...
October 18, 2017: Pathology, Research and Practice
Yuhong Ye, Sheng Zhang, Yupeng Chen, Xingfu Wang, Pengcheng Wang
OBJECTIVE: To evaluate the expression and prognostic significance of ALDH1A1 in gastric neuroendocrine carcinoma. MATERIALS AND METHODS: Immunohistochemical stains of ALDH1A1 were evaluated in 67 cases of gastric neuroendocrine carcinoma. The findings were correlated with clinicopathologic variables and overall survival. RESULTS: Immunohistochemistry revealed positive cytoplasmic immunoreactivity in 35 of 67 (52.2%) tumors and strongly positive immunoreactivity in 14 of 67 (20...
October 18, 2017: Pathology, Research and Practice
Cristina Díaz Del Arco, Carlos Taxonera, David Olivares, Mª Jesús Fernández Aceñero
INTRODUCTION: Primary eosinophilic colitis (EC) in adults is a rare and poorly studied disease, with 3 case series, 2 database-based studies and 52 case reports published to date. METHODS: Retrospective study of all adult EC cases diagnosed in a large tertiary hospital (Hospital Clínico San Carlos, Madrid) between 2006 and 2016. We included all cases with a histopathological diagnosis of EC and we selected only those cases that were clinically recognized primary EC...
October 18, 2017: Pathology, Research and Practice
Zhiyun Ben, Leilei Gong, Yuhua Qiu
Vaccinia-related kinase 1 (VRK1) is a member of the vaccinia-related kinase (VRK) family of serine/threonine protein kinases, which phosphorylates several transcription factors and has been postulated to be involved in regulation of cell proliferation. However, it remains unclear whether aberrant expression of VRK1 is related to the development of glioma. In this study, we aimed to investigate the clinical significance of VRK1 expression in human glioma and its biological function in glioma cells. Western blot and immunohistochemical analysis revealed that VRK1 was highly expressed in glioma tissues and cell lines...
October 18, 2017: Pathology, Research and Practice
Maryam Shahrabi-Farahani, Ebrahim Karimi, Leila Vazifeh Mostaan, Sadaf Saba, Nasrin Yazdani, Mahsa M Amoli
Detection of Epstein-Barr virus in oral squamous cell carcinoma suggests its involvement in the carcinogenesis of oral cavity. But, there are few studies on the incidence of EBV genome in squamous cell carcinomas at specific locations in the oral cavity like tongue and with different tumor progression. In this study the presence of EBV genome in tongue Squamous Cell Carcinoma (TSCC) in Iranian patients were investigated. Accordingly, a total of 94 cases with TSCC were firstly analyzed for the presence of viral genome through Nested PCR...
October 16, 2017: Pathology, Research and Practice
Yongpan Sun, Hong Mei, Chuan Xu, Hongjun Tang, Wei Wei
BACKGROUND: Many studies have shown that differentially expressed miRs in body fluids can serve as biomarkers in non-invasive detection of the cancers. However, the clinical significance of plasma miRs in the diagnosis of lung adenocarcinoma (LA) is still not clear. Therefore, we examined the LA-specific miRs in plasma, which could be utilized to diagnosis and monitor LA in routine clinical practice. METHODS: Twenty-eight LA cases and twenty-eight healthy controls were recruited to our study...
October 13, 2017: Pathology, Research and Practice
Xian-Qun Chu, Jing Wang, Guang-Xiang Chen, Guan-Qi Zhang, De-Yong Zhang, Yong-Yan Cai
We aim to investigate the role of microRNA-495 (miR-495) in the intestinal mucosal barrier by indirectly targeting signal transducer and activator of transcription 3 (STAT3) through the Janus kinase-signal transducer and activator of transcription (JAK)/STAT3 signaling pathway in a mouse model of ulcerative colitis (UC). BALB/c mice were selected for establishing mice model of UC, and intestinal tissues of normal and UC mice were collected. ELISA was conducted for detecting levels of TNF-α, IL-6, IFN-γ and IL-10...
October 12, 2017: Pathology, Research and Practice
Kowit Lounglaithong, Andrey Bychkov, Pichet Sampatanukul
Methylation markers are promising tools for diagnosis, prognosis and targeted treatment of cancer. In prostate carcinoma, aberrant promoter hypermethylation occurs earlier in the disease course and more consistently than recurrent somatic mutations. PAQR3, a tumor suppressor gene, was recently found to be downregulated in prostate cancer cell lines. We hypothesized that promoter methylation could be responsible for PAQR3 silencing in prostate cancer tissues. We aimed to investigate PAQR3 promoter methylation in prostate cancer by comparing it to benign prostatic hyperplasia (BPH)...
October 10, 2017: Pathology, Research and Practice
Liang Liang, Jiang-Hui Zeng, Jie-Yu Wang, Rong-Quan He, Jie Ma, Gang Chen, Xiao-Yong Cai, Xiao-Hua Hu
BACKGROUND: To practically verify the clinical value of miR-26a-5p and thoroughly explore its target genes as well as its potential functions in hepatocellular carcinoma (HCC). METHODS: HCC and adjacent non-cancerous hepatic tissues of 95 HCC patients were collected for analysis using reverse transcription quantitative real-time PCR (qRT-PCR). For the bioinformatics analysis, we identified potential target genes for miR-26a-5p from differentially expressed genes (DEGs) in Gene Expression Omnibus (GEO) data sets and miRWalk predicted database...
October 10, 2017: Pathology, Research and Practice
Leiming Wang, Zhuo Li, Cuicui Liu, Li Chen, Li Liu, Zeliang Hu, Lihong Zhao, Dehong Lu, Lianghong Teng
MGMT promoter methylation is considered as a prognostic and predictive biomarker indicating response to chemotherapy and radiotherapy in glioblastoma. A number of different methods and platforms including pyrosequencing (PSQ), quantitative methylation-specific PCR (qMSP) and immunohistochemistry (IHC), methylation-sensitive high resolution melting (MS-HRM) and NGS (Next Generation Sequencing) have been used to detect MGMT promoter methylation in gliomas. However, controversy remains about the most appropriate method to use for analyzing MGMT status...
October 10, 2017: Pathology, Research and Practice
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