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https://www.readbyqxmd.com/read/28730335/clinical-and-prognosis-value-of-the-cimp-status-combined-with-mlh1-or-p16-ink4a-methylation-in-colorectal-cancer
#1
Amana Saadallah-Kallel, Rania Abdelmaksoud-Dammak, Mouna Triki, Slim Charfi, Abdelmajid Khabir, Tahia Sallemi-Boudawara, Raja Mokdad-Gargouri
Aberrant DNA methylation of CpG islands occurred frequently in CRC and associated with transcriptional silencing of key genes. In this study, the CIMP combined with MLH1 or p16 (INK4a) methylation status was determined in CRC patients and correlated with clinicopathological parameters and overall survival. Our data showed that CIMP+ CRCs were identified in 32.9% of cases and that CACNAG1 is the most frequently methylated promoter. When we combined the CIMP with the MLH1 or the p16 (INK4a) methylation status, we found that CIMP-/MLH1-U (37...
August 2017: Medical Oncology
https://www.readbyqxmd.com/read/28730227/hpv-genotyping-and-p16%C3%A3-ki-67-dual-staining-in-the-detection-of-high-grade-cervical-lesion-in-patients-with-lsil-on-pap-smear
#2
Lavinia Cristina Moleriu, Ioan Sas, Adrian Claudiu RaŢiu, Mădălin Marius Margan, Cristina Anamaria Secoşan, Răzvan Ştefan Ilina, Florin George Horhat, Loredana Gabriela Stana, Dorin Grigoraş, LaurenŢiu Cornel Pirtea
p16÷Ki-67 dual-stained cytology, either alone or combined with human papillomavirus (HPV) 16÷18 genotyping, could be a useful tool for triage for colposcopy of HPV-positive patients. Based on this background, we aimed at comparing the diagnostic performance of the p16÷Ki-67 dual staining test, and high-risk HPV test for the detection of high-risk cervical intraepithelial neoplasia (CIN2÷3) in patients diagnosed with low-grade squamous intraepithelial lesion (LSIL) on Pap smear. We performed a retrospective study including 184 patients with LSIL cytology on Pap smear, of which 64 were referred for biopsy after colposcopy...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28728222/-application-of-p16-ki-67-immunocytochemistry-in-triage-of-patients-with-atypical-squamous-cells-of-undetermined-significance
#3
R R Jin, H W Ma, T Y Chen, R Rong, Y Wu, S L Li, Z H Zhang
Objective: To investigate the clinical value of p16/Ki-67 immunocytochemistry in patients with atypical squamous cells of undetermined significance(ASC-US). Methods: One hundred and seventy-one cases of thin-prep cytology test (TCT) diagnosed as ASC-US underwent p16/Ki-67 immunocytochemistry. All patients had colposcopy and biopsy from March 2015 to January 2016. Ninety of the 171 cases underwent high-risk HPV test at the same time. Results: p16/Ki-67 immunocytochemistry was positive in 43.9% (75/171) of the 171 cytology samples; the sensitivity and specificity of p16/Ki-67 immunocytochemistry were 77...
July 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28726720/tgf-%C3%AE-dependent-growth-arrest-and-cell-migration-in-benign-and-malignant-breast-epithelial-cells-are-antagonistically-controlled-by-rac1-and-rac1b
#4
Catharina Melzer, Juliane von der Ohe, Ralf Hass, Hendrik Ungefroren
Despite improvements in diagnosis and treatment, breast cancer is still the most common cancer type among non-smoking females. TGF-β can inhibit breast cancer development by inducing cell cycle arrest in both, cancer cells and, as part of a senescence program in normal human mammary epithelial cells (HMEC). Moreover, TGF-β also drives cell migration and invasion, in part through the small GTPases Rac1 and Rac1b. Depletion of Rac1b or Rac1 and Rac1b in MDA-MB-231 or MDA-MB-435s breast cancer cells by RNA interference enhanced or suppressed, respectively, TGF-β1-induced migration/invasion...
July 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28723632/potential-link-between-fusobacterium-enrichment-and-dna-methylation-accumulation-in-the-inflammatory-colonic-mucosa-in-ulcerative-colitis
#5
Tomomitsu Tahara, Ichiro Hirata, Naoko Nakano, Sayumi Tahara, Noriyuki Horiguchi, Tomohiko Kawamura, Masaaki Okubo, Takamitsu Ishizuka, Hyuga Yamada, Dai Yoshida, Takafumi Ohmori, Kohei Maeda, Naruomi Komura, Hirokazu Ikuno, Yasutaka Jodai, Toshiaki Kamano, Mitsuo Nagasaka, Yoshihito Nakagawa, Tetsuya Tuskamoto, Makoto Urano, Tomoyuki Shibata, Makoto Kuroda, Naoki Ohmiya
BACKGROUND AND AIM: Fusobacterium enrichment has been associated with colorectal cancer development. Ulcerative colitis (UC) associated tumorigenesis is characterized as high degree of methylation accumulation through continuous colonic inflammation. The aim of this study was to investigate a potential link between Fusobacterium enrichment and DNA methylation accumulation in the inflammatory colonic mucosa in UC. METHODS: In the candidate analysis, inflamed colonic mucosa from 86 UC patients were characterized the methylation status of colorectal a panel of cancer related 24 genes...
June 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28722352/serpine-1-induces-alveolar-type-ii-cell-senescence-through-activating-p53-p21-rb-pathway-in-fibrotic-lung-disease
#6
Chunsun Jiang, Gang Liu, Tracy Luckhardt, Veena Antony, Yong Zhou, A Brent Carter, Victor J Thannickal, Rui-Ming Liu
Senescence of alveolar type 2 (ATII) cells, progenitors of the alveolar epithelium, is implicated in the pathogeneses of idiopathic pulmonary fibrosis (IPF), an aging-related progressive fatal lung disorder with unknown etiology. The mechanism underlying ATII cell senescence in fibrotic lung diseases, however, remains poorly understood. In this study, we report that ATII cells in IPF lungs express higher levels of serpine 1, also known as plasminogen activator inhibitor 1 (PAI-1), and cell senescence markers p21 and p16, compared to ATII cells in control lungs...
July 19, 2017: Aging Cell
https://www.readbyqxmd.com/read/28722212/active-human-papillomavirus-involvement-in-barrett-s-dysplasia-and-oesophageal-adenocarcinoma-is-characterized-by-wild-type-p53-and-aberrations-of-the-retinoblastoma-protein-pathway
#7
Shanmugarajah Rajendra, Tao Yang, Wei Xuan, Prateek Sharma, Darren Pavey, Cheong Soon Lee, Son Le, Josephine Collins, Bin Wang
We have previously demonstrated that transcriptionally active high-risk HPV (hr-HPV) is strongly incriminated in Barrett's dysplasia (BD) and oesophageal adenocarcinoma (OAC) using mainly fresh frozen tissue. This study aimed to identify biomarkers of active HPV infection in Barrett's metaplasia, (BM)/BD/OAC by immunohistochemical staining (IHC) of formalin-fixed paraffin embedded (FFPE) tissue for aberrations of p53 and the retinoblastoma (pRb) pathway which are targets for the viral oncoproteins, E6/E7 respectively...
July 19, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28720443/squamous-intraepithelial-lesions-of-the-anal-squamocolumnar-junction-histopathological-classification-and-hpv-genotyping
#8
Omar Clavero, Jenny McCloskey, Vicente Marco Molina, Beatriz Quirós, Ignacio G Bravo, Silvia de Sanjosé, F Xavier Bosch, Ville N Pimenoff
BACKGROUND: Human papillomavirus (HPV)-related anal cancer lesions are often found adjacent to the squamocolumnar junction (SCJ). We have assessed the histopathology and associated HPV genotypes in anal SCJ lesions in surgically excised anal warts in HIV-negative and -positive patients. METHODS: Histopathology identified 47 squamous intraepithelial lesions (SILs) adjacent to the SCJ amongst a total of 145 cases of clinically diagnosed anal condylomata. The anal SCJ lesions were further analyzed with p16, CK7 and p63 immunohistochemistry and HPV genotyping...
June 2017: Papillomavirus Research
https://www.readbyqxmd.com/read/28719486/p16-expression-and-biological-behavior-of-flat-vulvar-low-grade-squamous-intraepithelial-lesions-lsil
#9
Natasha Lewis, Luis Z Blanco, Kruti P Maniar
Flat low-grade squamous intraepithelial lesion (LSIL) of the vulva [vulvar intraepithelial neoplasia (VIN) 1, flat condyloma] is an uncommon entity with poorly understood biological behavior. We aimed to determine the risk of subsequent vulvar high-grade squamous intraepithelial lesion (HSIL) or carcinoma following a diagnosis of vulvar LSIL/VIN 1, as well as the frequency and predictive value of p16 immunohistochemical expression in this setting. Of the 51 included cases, p16 positivity (diffuse block staining) was identified in 2 (4%)...
November 30, 2016: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28719462/spindle-cell-lipomas-in-women-a-report-of-53-cases
#10
Jennifer S Ko, Brianne Daniels, Patrick O Emanuel, Paul Elson, Vadim Khachaturov, Jesse K McKenney, John R Goldblum, Steven D Billings
Spindle cell lipomas (SCL) are typically tumors of the upper back/neck (shawl region) of men (80% to 90%). In general, there is a frequent tendency to restrict the diagnosis to this specific clinical scenario and a hesitancy to diagnose SCL in women. We hypothesized that SCL in women have a more varied presentation. A total of 395 SCL were diagnosed at our institution over the last 11 years. The diagnosis of SCL in women was confirmed by re-review. Immunohistochemical stains for CD34, desmin, estrogen receptor, and p16 were performed...
July 17, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28716547/cellular-senescence-regulated-by-swi-snf-complex-subunits-through-p53-p21-and-p16-prb-pathway
#11
Ling He, Ying Chen, Jianguo Feng, Weichao Sun, Shun Li, Mengting Ou, Liling Tang
SWI/SNF complex is an evolutionarily well-conserved chromatin-remodeling complex, which is implicated in the nucleosomes removing or sliding, impacting on the DNA repair, replication and genes expression regulation. The SWI/SNF complex consists up to 12 protein subunits. The catalytic subunits are BRG1 or BRM, which are exclusive ATPase subunits. BRG1 has been reported to play an important role in cellular senescence. However, The function of non-catalytic subunits involved in cellular senescence is rarely investigated...
July 14, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28713770/prognostic-impact-of-ajcc-uicc-8th-edition-new-staging-rules-in-oropharyngeal-squamous-cell-carcinoma
#12
Nora Würdemann, Steffen Wagner, Shachi Jenny Sharma, Elena-Sophie Prigge, Miriam Reuschenbach, Stefan Gattenlöhner, Jens Peter Klussmann, Claus Wittekindt
INTRODUCTION: The purpose of this study was to test whether the 8th edition of the AJCC/UICC TNM staging system (UICC) precisely differentiates between stages and reflects disease outcome in human papilloma virus (HPV)-associated oropharyngeal squamous cell carcinoma (OPSCC). PATIENTS AND METHODS: OPSCC patients that were diagnosed between 2000 and 2016 were included in this analysis and HPV status was determined by combined DNA and p16 testing. Stratification was done according to 7th and 8th UICC staging rules...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28706164/clinicopathological-significance-of-the-p16-hypermethylation-in-multiple-myeloma-a-systematic-review-and-meta-analysis
#13
Huiqing Yu, Liejun Yang, Yunfeng Fu, Meng Gao, Ling Tian
It is well known that the loss of function of the p16INK4A gene is mainly caused by the hypermethylation of the p16 gene; however, whether or not the inactivation is associated with the clinical significance of multiple myeloma (MM) remains elusive. A meta-analysis was conducted to quantitatively determine the role of the p16 hypermethylation in the clinical significance of MM. We demonstrated that MM patients show much higher hypermethylation rates on the p16 gene in bone marrow compared to normal individuals, as well as monoclonal gammopathy of undetermined significance (MGUS)...
June 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28705710/using-p16-immunohistochemistry-to-classify-morphologic-cervical-intraepithelial-neoplasia-2-correlation-of-ambiguous-staining-patterns-with-hpv-subtypes-and-clinical-outcome
#14
Yuxin Liu, Mahfood Alqatari, Kieran Sultan, Fei Ye, Dana Gao, Keith Sigel, David Zhang, Tamara Kalir
P16(INK4a) immunohistochemistry (IHC) is widely used to facilitate the diagnosis of human papillomavirus (HPV)-associated cervical precancerous lesions. While most p16 results are distinctly positive or negative, certain ones are ambiguous: they meet some but not all requirements for the "block-positive" pattern. It is unclear whether ambiguous p16 immunoreactivity indicates oncogenic HPV infection or risk of progression. Herein, we compared HPV genotypes and subsequent High-grade Squamous Intraepithelial Lesion (HSIL) outcomes among 220 cervical biopsies with a differential diagnosis of Cervical Intraepithelial Neoplasia 2 (CIN 2) based on hematoxylin and eosin morphology and varying degrees of p16 immunoreactivity...
July 10, 2017: Human Pathology
https://www.readbyqxmd.com/read/28705709/a-novel-sclerosing-atypical-lipomatous-tumor-well-differentiated-liposarcoma-in-a-7-year-old-girl-report-of-a-case-with-molecular-confirmation
#15
Ran Peng, Huijiao Chen, Xuantao Yang, Xianliang Zhang, Zhang Zhang, Xin He, Hongying Zhang
Atypical lipomatous tumor/well-differentiated liposarcoma/dedifferentiated liposarcoma (ALT/WDL/DDL) is a common type of liposarcoma in late adulthood. However, pediatric ALT/WDL/DDL is extremely rare, and only 3 cases have been described in children younger than 10years of age. Notably, none of these cases harbored MDM2 gene amplification. Here, we reported a sclerosing ALT/WDL in a 7-year-old Chinese girl. Histologically, in most areas, the neoplastic cells were embedded within the collagenous background and typical lipogenic areas were inconspicuous throughout the sclerotic areas...
July 10, 2017: Human Pathology
https://www.readbyqxmd.com/read/28704762/combined-inhibition-of-cdk4-6-and-pi3k-akt-mtor-pathways-induces-a-synergistic-anti-tumor-effect-in-malignant-pleural-mesothelioma-cells
#16
Mara A Bonelli, Graziana Digiacomo, Claudia Fumarola, Roberta Alfieri, Federico Quaini, Angela Falco, Denise Madeddu, Silvia La Monica, Daniele Cretella, Andrea Ravelli, Paola Ulivi, Michela Tebaldi, Daniele Calistri, Angelo Delmonte, Luca Ampollini, Paolo Carbognani, Marcello Tiseo, Andrea Cavazzoni, Pier Giorgio Petronini
Malignant pleural mesothelioma (MPM) is a progressive malignancy associated to the exposure of asbestos fibers. The most frequently inactivated tumor suppressor gene in MPM is CDKN2A/ARF, encoding for the cell cycle inhibitors p16(INK4a) and p14(ARF), deleted in about 70% of MPM cases. Considering the high frequency of alterations of this gene, we tested in MPM cells the efficacy of palbociclib (PD-0332991), a highly selective inhibitor of cyclin-dependent kinase (CDK) 4/6. The analyses were performed on a panel of MPM cell lines and on two primary culture cells from pleural effusion of patients with MPM...
July 10, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28700487/prognostic-role-of-methylated-gstp1-p16-esr1-and-pitx2-in-patients-with-breast-cancer-a-systematic-meta-analysis-under-the-guideline-of-prisma
#17
Xianneng Sheng, Yu Guo, Yang Lu
BACKGROUND: BRCA1 and RASSF1A promoter methylation has been reported to be correlated with a worse survival in patients with breast cancer. However, the prognostic values of GSTP1, p16, ESR1, and PITX2 promoter methylation in breast cancer remain to be determined. Here, we performed this study to evaluate the prognostic significance of GSTP1, p16, ESR1, and PITX2 promoter methylation in breast cancer. METHODS: A range of online databases was systematically searched to identify available studies based on the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guideline...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28700424/uterine-carcinosarcomas-clinical-histopathologic-and-immunohistochemical-characteristics
#18
Xiaowei Chen, Rebecca Arend, Diane Hamele-Bena, Ana I Tergas, Melanie Hawver, Guo-Xia Tong, Thomas C Wright, Jason D Wright
Carcinosarcomas (malignant mixed Müllerian tumors or MMMT) are rare malignant tumors in the female genital tract composed of both malignant epithelial and malignant mesenchymal components. They comprise <5% of all neoplasms in the gynecologic tract and have an aggressive clinical course. The purpose of this study is to evaluate the immunophenotype and possible histogenesis of carcinosarcomas of the uterus. Sixty-two cases of uterine carcinosarcomas diagnosed between 1995 and 2011 were retrieved from the gynecologic pathology files at Columbia University Medical Center...
July 11, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28700422/cervical-squamous-carcinomas-with-prominent-acantholysis-and-areas-resembling-breast-lobular-carcinoma-an-aggressive-form-of-dedifferentation
#19
Kerry Scott, Gareth Bryson, Jackie Jamison, Michael Coutts, W Glenn McCluggage
There have been occasional reports of primary cervical adenocarcinoma with areas of dedifferentiation resulting in morphologic mimicry of breast lobular carcinoma. We describe 4 cases of primary cervical squamous carcinoma with prominent acantholysis (3 cases), areas resembling breast lobular carcinoma (3 cases) or both (2 cases). All 4 tumors showed positivity with p63 and CK5/6 and 3 of 4 exhibited block-type immunoreactivity with p16. Two of the 4 cases contained high-risk human papillomavirus (types 16 and 18) on molecular testing; of the 2 cases which were human papillomavirus negative, 1 exhibited patchy nonblock immunoreactivity with p16...
July 11, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28693288/epigallocatechin-3-gallate-inhibits-growth-and-induces-apoptosis-in-esophageal-cancer-cells-through-the-demethylation-and-reactivation-of-the-p16-gene
#20
Jianchao Meng, Qiang Tong, Xiaobo Liu, Zongtao Yu, Jicai Zhang, Bo Gao
The present study aimed to investigate the effect of treatment with epigallocatechin-3-gallate (EGCG) on the human esophageal cancer cell line ECa109 and elucidate the associated underlying mechanisms. ECa109 cells were cultured and treated with increasing concentrations of EGCG for various durations. Cell viability was evaluated using the MTT assay and apoptosis was detected using flow cytometry. The methylation status of the cyclin-dependent kinase inhibitor 2A (p16) gene was analyzed using the methylation-specific polymerase chain reaction (PCR)...
July 2017: Oncology Letters
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