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Pathology Oncology Research: POR

Cristina Sábato, Luciana Bastos-Rodrigues, Debora Chaves Moraes, Eitan Friedman, Luiz De Marco, Vivian Resende
No abstract text is available yet for this article.
March 19, 2018: Pathology Oncology Research: POR
Puneet, Hasan Raza Kazmi, Soni Kumari, Satendra Tiwari, A Khanna, Gopeshwar Narayan
Gastric cancer is one of the most common malignancy worldwide. The various genetic and epigenetic events have been found to be associated with its carcinogenesis. The epigenetic is a heritable and transient/reversible change in the gene expression that is not accompanied by modification in the DNA sequence. This event is characterized by the alteration in the promoter CpG island of the gene or histone modification. These events are associated with silencing of critical tumor suppressor gene and activation of oncogenes leading to carcinogenesis...
March 19, 2018: Pathology Oncology Research: POR
Thaís da Rocha Boeira, Jonas Michel Wolf, Janaina Coser, Ivana Grivicich, Daniel Simon, Vagner Ricardo Lunge
No abstract text is available yet for this article.
March 15, 2018: Pathology Oncology Research: POR
Ana P Azevedo, Susana N Silva, Alice Reichert, Fernando Lima, Esmeraldina Júnior, José Rueff
Our main aim was to evaluate the role of caspases' genes SNPs in Philadelphia-chromosome negative chronic myeloproliferative neoplasms (PN-MPNs) susceptibility. A case-control study in 133 Caucasian Portuguese PN-MPNs patients and 281 matched controls was carried out, studying SNPs in apoptosis related caspases: rs1045485 and rs1035142 (CASP8), rs1052576, rs2308950, rs1132312 and rs1052571 (CASP9), rs2227309 and rs2227310 (CASP7) and rs13006529 (CASP10). After stratification by pathology diagnosis for essential thrombocythemia (ET), female gender or JAK2 positive, there is a significant increased risk for those carrying at least one variant allele for CASP9 (C653T) polymorphism (OR 2...
March 14, 2018: Pathology Oncology Research: POR
Jeny Laskar, Kasturi Bhattacharjee, Mahuya Sengupta, Yashmin Choudhury
Anti-diabetic drugs are an important group of therapeutics used worldwide. Different anti-diabetic drugs lower blood glucose level by different mechanisms. In recent years, numerous investigations have been performed based on both comparative and cohort studies, in order to establish the relationship between anti-diabetic pharmacotherapy and cancer incidence as well as mortality due to cancer. Some anti-diabetic drugs have been found to exhibit anti-cancer activity while others might increase the risk for cancer...
March 13, 2018: Pathology Oncology Research: POR
Yun Sol Jo, Min Sung Kim, Nam Jin Yoo, Sug Hyung Lee
No abstract text is available yet for this article.
March 13, 2018: Pathology Oncology Research: POR
Sugela Blancas, Rogelio Medina-Berlanga, Liliana Ortíz-García, Alfredo Loredo-Ramírez, Leticia Santos
Specific markers in lesions of the human uterine cervix cancer (UCC) are still needed for prognostic, diagnostic and/or therapeutic purposes. In this study we evaluated key molecules at protein level between normal epithelium, cervical intraepithelial neoplasia (CIN1-3) and invasive cancer of a group of molecules previously reported at mRNA level. For that purpose, human formalin-fixed paraffin embedded tissue microarrays (TMAs) were constructed containing 205 Mexican tissue core specimens. Immunohistochemistry and quantitative analysis of histological staining was performed against twenty-two distinct proteins for each core and the processing platform ImageJ...
March 12, 2018: Pathology Oncology Research: POR
Yun Sol Jo, Min Sung Kim, Nam Jin Yoo, Sug Hyung Lee
No abstract text is available yet for this article.
March 12, 2018: Pathology Oncology Research: POR
Lata Singh, Neeru Saini, Neelam Pushker, Sameer Bakhshi, Seema Sen, Tapas C Nag, Seema Kashyap
Alteration in mitochondrial DNA plays an important role in the development and progression of cancer. The Displacement Loop (D-loop) region of mitochondrial DNA (mtDNA) is the regulatory region for its replication and transcription. Therefore, we aimed to characterize mutations in the D-loop region of mitochondrial DNA along with the morphological changes and analyzed their impact on survival in retinoblastoma patients. mtDNA D-loop region was amplified by Nested-Polymerase Chain Reaction (Nested-PCR) and mutations were analyzed in 60 tumor samples from retinoblastoma patients by DNA sequencing...
March 12, 2018: Pathology Oncology Research: POR
Ji-Su Mo, Young-Ran Park, Soo-Cheon Chae
MiRNAs are non-coding RNAs that play important roles in the pathogenesis of human diseases by regulating target gene expression in specific cells or tissues. Previously we identified colorectal cancer (CRC) associated MIR196B, which was specifically up-regulated in CRC cells and tissue. We also identified 18 putative MIR196B target genes by comparing the mRNAs down-regulated in MIR196B-overexpressed cells with MIR196B target genes predicted by public bioinformatics tools. In this study, we verified the association between MIR196B and three genes, HOXA5, HOXB6 and GLTP...
March 12, 2018: Pathology Oncology Research: POR
Jéssica Niederauer Leote da Silva, Alana Durayski Ranzi, Caroline Trainotti Carvalho, Tales Vicente Scheide, Yuri Thomé Machado Strey, Túlio Meyer Graziottin, Claudia Giuliano Bica
Bladder cancer (BC) is a heterogeneous neoplasia characterized by a high number of recurrences. Standardized clinical and morphological parameters are not always sufficient to predict individual tumor behavior. The aim of this study was to evaluate the expression of cell cycle regulators proteins as potential adjuvant in prognosis and monitoring of this disease. Block paraffin samples from patients with urothelial bladder carcinoma treated by transurethral resection (TUR) were collected to immunohistochemistry analysis for proteins p16, p21, p27, p53, pRb and Ki-67...
March 9, 2018: Pathology Oncology Research: POR
Ivana Maleva Kostovska, Milena Jakimovska, Katerina Popovska-Jankovic, Katerina Kubelka-Sabit, Mitko Karagjozov, Dijana Plaseska-Karanfilska
Tumours presenting BRCAness profile behave more aggressively and are more invasive as a consequence of their complex genetic and epigenetic alterations, caused by impaired fidelity of the DNA repair processes. Methylation of promoter CpG islands represents an alternative mechanism to inactivate DNA repair and tumour suppressor genes. In our study, we analyzed the frequency of methylation changes of 24 tumour suppressor genes and explored their association with BRCAness profile. BRCA1ness profile and aberrant methylation were studied in 233 fresh frozen breast tumour tissues by Multiplex Ligation-dependent Probe Amplification (MLPA) and Methylation Specific (MS)-MLPA methods, respectively...
March 9, 2018: Pathology Oncology Research: POR
Krisztián Kállay, Dávid Zakariás, Katalin Csordás, Gábor Benyó, Csaba Kassa, János Sinkó, Anita Stréhn, Orsolya Horváth, Barna Vásárhelyi, Gergely Kriván
In antithymocyte globulin (ATG) treated patients occasionally bradycardia has been noticed. Therefore, we retrospectively analyzed the occurrence of bradycardia in ATG-treated children. Using medical records between 2007 and 2012 we identified children undergoing a combined therapy with ATG and glucocorticoids (ATG group, n = 22). The incidence of bradycardia was compared to that registered in children treated with glucocorticoids alone (glucocorticoid alone group, n = 21). Heart rates (HR) were registered before and on days 0-3, 4-7 and 8-14 after the ATG or steroid administration...
March 9, 2018: Pathology Oncology Research: POR
Xiaojuan Ren, Hui Zhang, Hui Cong, Xudong Wang, Hongbing Ni, Xianjuan Shen, Shaoqing Ju
Epithelium ovarian cancer (EOC) is currently the prevalent malignant cancer worldwide. However, there is a lack of efficient biomarkers for EOC screening. Accumulating evidence reveals that serum miRNA detectable in various types of cancer. Therefore, we explore the diagnostic value of combined detection of plasma miR-193a-5p, HE4 and CA125 for EOC. Serum samples were collected from 45 patients with primary EOC, 30 patients with benign ovarian tumor patients and 40 healthy controls. The expression of serum miR-193a-5p was detected by real-time quantitative PCR, and serum HE4 and CA125 were detected by chemiluminescent immunoassay...
March 8, 2018: Pathology Oncology Research: POR
Svetlana G Semushina, Dmitry A Aronov, Ekaterina V Moiseeva
Earlier, naturally arising mammary cancer in BLRB female mice was shown to reproduce some key pathological characteristics of the familial set of human breast cancer. Then we advanced a novel 3S-paradigm of anticancer research that helped to develop selection criteria and to estimate benefit/risk of local interleukin-2 (IL-2) effects in this spontaneous mouse model. In this paper, the efficacy of single and triple local IL-2 doses is compared using properly selected murine BLRB females based on our previously published data...
March 6, 2018: Pathology Oncology Research: POR
Ming Wang, Shuhong An, Diyi Wang, Haizhen Ji, Min Geng, Xingjing Guo, Zhaojin Wang
Exposure to carcinogens of tobacco smoke may result in methylation of protease-activated receptors-4 (PAR4) gene and further induces the loss of PAR4 expression, which is considered to be involved in carcinogenesis of esophageal squamous cell carcinoma (ESCC). Here we employed a TMT-based quantitative proteomic approach to identify PAR4-regulated changes of proteomic profiles in ESCC cells and to identify potentially therapeutic value. A total of 33 proteins were found significantly changed with 15 up-regulated and 18 down-regulated in PAR4-activating peptide (PAR4-AP) treated ESCC cells compared with controls...
March 4, 2018: Pathology Oncology Research: POR
Srividya, B H Giridhar, S Vishwanath, Anirban Chakraborty
Tumor suppressor protein, TP53 also known as the "guardian of the genome" plays a key role in preventing malignant transformation. Almost 50% of human tumors carry mutations in this gene; in the remaining tumors, the TP53 network is functionally inoperative. The majority of TP53 mutations are missense mutations and more than 90% of the missense mutations affect specific codons in the DNA-binding domain, called "hotspot codons." The present study was aimed at analyzing the germline mutation status of four hotspot codons in TP53 namely, codon 175, codon 245, codon 248 (within the DNA binding domain) and codon 72 (outside the DNA binding domain) in cancer cases encountered in a tertiary care hospital in South India by PCR-RFLP...
March 2, 2018: Pathology Oncology Research: POR
Cinthya Santos Cirqueira, Aloisio Sousa Felipe-Silva, Alda Wakamatsu, Lidiane Vieira Marins, Eziel Cavalcanti Rocha, Evandro Sobroza de Mello, Venâncio Avancini Ferreira Alves
Multidrug resistance-associated protein 2 (MRP2) is a multi-specific organic anion transporter predominantly expressed in the canalicular membrane of hepatocytes, epithelial cells from gallbladder and apical membranes of proximal tubular kidney epithelium whereas multidrug resistance-associated protein 3 (MRP3) is present in the basolateral membrane of hepatocytes and cholangiocytes. This study aims to detect the expression of these transporters in hepatocellular carcinoma (HCC) and in cholangiocarcinoma (CC), searching for evidences for future studies on differential diagnosis and on clinical essays...
February 20, 2018: Pathology Oncology Research: POR
Alejandro José Sastre-Heres, Irene Iglesias, Miguel Alaguero-Calero, Daniel Ruiz-Sánchez, Benito García-Díaz, Jaime Peña-Díaz
The aim of this study was to compare the Memorial Sloan-Kettering Cancer Center (MSKCC) and the Cleveland Clinic Foundation (CCF) models of classification of aRCC patients. In addition, the model developed from the pivotal trial of temsirolimus and those proposed by Motzer et al. in 2004, Escudier et al., Heng et al., Choueiri et al. and Bamias et al. were examined. An observational, retrospective study of patients starting first-line systemic therapy was conducted between 2008 and 2011. The variables used to evaluate the classification models were median overall survival (mOS) and median progression-free survival (mPFS)...
February 17, 2018: Pathology Oncology Research: POR
Petra Matyas, Etelka Postyeni, Katalin Komlosi, Renata Szalai, Judit Bene, Lili Magyari, Bela Melegh, Kinga Hadzsiev
Age-related hearing impairment (ARHI) is the most frequent sensory disease in the elderly, which is caused by an interaction between genetic and environmental factors. Here we examined the ethnic differences, allele and genotype frequencies of the NAT2, GRM7, and GRHL2 genes pooled samples of healthy Hungarian and healthy and hearing impaired Roma people. Study populations of healthy Hungarian and Roma subjects were characterized for the rs1799930 NAT2, rs11928865 GRM7, rs10955255, rs13263539, and rs1981361 GRHL2 polymorphisms and deaf Roma subjects were characterized for the rs1799930 NAT2, rs13263539, and rs1981361 GRHL2 using a PCR-RFLP method...
February 17, 2018: Pathology Oncology Research: POR
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