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https://www.readbyqxmd.com/read/29679201/utilization-of-the-21-gene-recurrence-score-in-a-diverse-breast-cancer-patient-population-development-of-a-clinicopathologic-model-to-predict-high-risk-scores-and-response-to-neoadjuvant-chemotherapy
#1
Ko Un Park, Yalei Chen, Dhananjay Chitale, Sarah Choi, Haythem Ali, S David Nathanson, Jessica Bensenhaver, Erica Proctor, Lindsay Petersen, Randa Loutfi, Alyson Simonds, Marcia Kuklinski, Thomas Doyle, Vrushali Dabak, Kim Cole, Melissa Davis, Lisa Newman
INTRODUCTION: The 21-gene expression profile [Oncotype DX Recurrence Score (RS)] stratifies benefit from adjuvant chemotherapy in hormone receptor (HR)-positive, HER2/neu-negative, node-negative breast cancer. It is not routinely applied to predict neoadjuvant chemotherapy (NACT) response; data in diverse patient populations also are limited. We developed a statistical model based on standard clinicopathologic features to identify high-risk cases (RS > 30) and then evaluated ability of predicted high RS to predict for NACT downstaging...
April 20, 2018: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29678441/acute-lymphoblastic-leukemia-lymphoma-of-the-oral-and-maxillofacial-region
#2
Celeste Sánchez-Romero, Hélder Antônio Rebelo Pontes, Flávia Sirotheau Corrêa Pontes, André Caroli Rocha, Román Carlos, Javier C Rendón, Oslei Paes de Almeida, Felipe Paiva Fonseca
OBJECTIVE: Our objective was to describe the clinicopathologic and immunohistochemical features of acute lymphoblastic leukemia/lymphoma (ALL/LBL) of the oral and maxillofacial region (OMF). STUDY DESIGN: Cases diagnosed as ALL/LBL of the OMF region were retrieved from the files of 2 Brazilian and 1 Guatemalan oral pathology services from 2005 to 2017. Microscopic and immunohistochemical features of each case were reviewed and fully described, and clinical data were retrieved from the pathology reports...
January 31, 2018: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29676362/expression-of-e-cadherin-syndecan-1-ki-67-and-maintenance-minichromosome-3-in-tissue-lesions-of-actinic-prurigo-obtained-by-incisional-biopsy
#3
Alexandra Mancheno-Valencia, Ronell Eduardo Bologna-Molina, Sonia Toussaint-Caire, María Elisa Vega-Memije, Juan Carlos Cuevas-González
Actinic prurigo (AP) is an idiopathic photodermatosis; the initial manifestations usually occur during the first decades of life but can appear at any age. Cases are usually diagnosed late once the lesions have exacerbated; due to the extensive involvement of the vermilion border and the etiology, it has been confused with and related to a potentially malignant process. Syndecan-1 and E-cadherin were positive in the epidermis, with moderate-to-intense staining in 100% of samples. Ki67 and MCM3 were expressed in the lower third of the epidermis and showed greater immunolabeling in samples that contained lymphoid follicles (Ki 67: epidermis [17...
April 2018: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29675587/a-case-of-gastric-neuroendocrine-neoplasm-with-mixed-grade-a-distinct-type-of-high-grade-well-differentiated-neuroendocrine-neoplasm
#4
Elia Guadagno, Gaetano Luglio, Alessandro Iacobelli, Giorgio Borrelli, Antonio Castaldi, Gaetano De Rosa, Marialaura Del Basso De Caro
Grade 3 neuroendocrine tumor (NET G3) is a rare new entity that has recently been introduced in the classification of neuroendocrine neoplasms of the pancreas. It is a well-differentiated form, with a high proliferative activity (Ki67 > 20%), and it represents a category whose prognosis is intermediate between NET G2 and poorly differentiated neuroendocrine carcinoma (NEC G3). In sites other than the pancreas, this new category is by far less coded. Herein is reported a case of NET G3 of the stomach, the 13th described in literature...
April 19, 2018: Endocrine Pathology
https://www.readbyqxmd.com/read/29669986/quantitative-analyses-of-the-metaphase-to-anaphase-transition-reveal-differential-kinetic-regulation-for-securin-and-cyclin-b1
#5
Makoto Konishi, Norihisa Shindo, Masataka Komiya, Kozo Tanaka, Takehiko Itoh, Toru Hirota
Separation of sister chromatids is a drastic and irreversible step in the cell cycle. The key biochemistry behind this event is the proteolysis mediated by the ubiquitin ligase called the anaphase promoting complex, or APC/C. Securin and cyclin B1 are the two established substrates for APC/C whose degradation releases separase and inactivates cyclin B1-dependent kinase 1 (cdk1), respectively, at the metaphase-to-anaphase transition. In this study, we have combined biochemical quantifications with mathematical simulations to characterize the kinetic regulation of securin and cyclin B1, in the cytoplasmic and chromosomal compartments, and found that they are differentially distributed and degraded with different rates...
2018: Biomedical Research
https://www.readbyqxmd.com/read/29669853/cd32-is-expressed-on-cells-with-transcriptionally-active-hiv-but-does-not-enrich-for-hiv-dna-in-resting-t-cells
#6
Mohamed Abdel-Mohsen, Leticia Kuri-Cervantes, Judith Grau-Exposito, Adam M Spivak, Racheal A Nell, Costin Tomescu, Surya Kumari Vadrevu, Leila B Giron, Carla Serra-Peinado, Meritxell Genescà, Josep Castellví, Guoxin Wu, Perla M Del Rio Estrada, Mauricio González-Navarro, Kenneth Lynn, Colin T King, Sai Vemula, Kara Cox, Yanmin Wan, Qingsheng Li, Karam Mounzer, Jay Kostman, Ian Frank, Mirko Paiardini, Daria Hazuda, Gustavo Reyes-Terán, Douglas Richman, Bonnie Howell, Pablo Tebas, Javier Martinez-Picado, Vicente Planelles, Maria J Buzon, Michael R Betts, Luis J Montaner
The persistence of HIV reservoirs, including latently infected, resting CD4+ T cells, is the major obstacle to cure HIV infection. CD32a expression was recently reported to mark CD4+ T cells harboring a replication-competent HIV reservoir during antiretroviral therapy (ART) suppression. We aimed to determine whether CD32 expression marks HIV latently or transcriptionally active infected CD4+ T cells. Using peripheral blood and lymphoid tissue of ART-treated HIV+ or SIV+ subjects, we found that most of the circulating memory CD32+ CD4+ T cells expressed markers of activation, including CD69, HLA-DR, CD25, CD38, and Ki67, and bore a TH 2 phenotype as defined by CXCR3, CCR4, and CCR6...
April 18, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29666157/cd30-expression-and-its-correlation-with-myc-and-bcl2-in-de-novo-diffuse-large-b-cell-lymphoma
#7
Qi-Xing Gong, Zhen Wang, Chong Liu, Xiao Li, Ting-Xun Lu, Jin-Hua Liang, Wei Xu, Jian-Yong Li, Zhi-Hong Zhang
AIM: CD30+ diffuse large B-cell lymphoma (DLBCL) has emerged as a new immunophenotypic variant of de novo DLBCLs. However, the prevalence of CD30 positivity is variable according to different studies, and the prognostic significance of CD30 is also controversial. This study aimed to investigate the positive expression rate and prognostic impact of CD30 in de novo DLBCLs and try to find the correlated influences. METHODS: A total of 241 patients with de novo DLBCL in east China from 2008 to 2015 were included to investigate the prevalence, clinicopathological features and outcomes of CD30+ de novo DLBCLs...
April 17, 2018: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29666149/genetic-and-phenotypic-difference-in-cd8-t-cell-exhaustion-between-chronic-hepatitis-b-infection-and-hepatocellular-carcinoma
#8
Xiaochen Wang, Qifeng He, Haiyuan Shen, Xiao-Jie Lu, Beicheng Sun
BACKGROUND: Several recent studies published have suggested that T cell exhaustion exists both in chronic infection and cancer. However, to date, few studies have investigated their differences. Here we designed this study to explore the genetic and phenotypic difference in CD8+ T cell exhaustion between chronic hepatitis B (CHB) and hepatocellular carcinoma (HCC). METHODS: In this study, we assayed the phenotypes and functional states of CD8+ T cells separating from human CHB tissues and HCC tissues, and re-analyse the single-cell sequencing data (GSE98638) published previously...
April 17, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29666128/prognostic-value-of-ki67-in-bcg-treated-non-muscle-invasive-bladder-cancer-a-meta-analysis-and-systematic-review
#9
Yuhui He, Ning Wang, Xiaofeng Zhou, Jianfeng Wang, Zhenshan Ding, Xing Chen, Yisen Deng
OBJECTIVES: The aim of this study was to explore the prognostic value of ki67 as a marker in patients with non-muscle invasive bladder cancer (NMIBC) treated with BCG. METHODS: Studies were systematically retrieved from the relevant databases (Web of Science, PubMed, Cochrane Library and Embase), and the expiry date was May 2017. The research steps referred to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis statement. RESULTS: A total of 11 studies that complied with the inclusion criteria were included...
April 17, 2018: BMJ Open
https://www.readbyqxmd.com/read/29665447/propensity-score-to-evaluate-prognosis-in-pregnancy-associated-breast-cancer-analysis-from-a-french-cancer-network
#10
Anne-Sophie Boudy, Iptissem Naoura, Lise Selleret, Sonia Zilberman, Joseph Gligorov, Sandrine Richard, Isabelle Thomassin-Naggara, Nathalie Chabbert-Buffet, Marcos Ballester, Sofiane Bendifallah, Emile Darai
PURPOSE: To compare the prognosis of pregnancy associated breast cancer occurring during pregnancy (BCP) to non-pregnancy associated breast cancers (non-BCP) in young women managed at a national expert center. METHODS: Retrospective cohort study of a prospective database using propensity score matching (PSM) analysis with known prognostic factors. RESULTS: We analyzed data of 49 patients with BCP and 104 with non-BCP diagnosed between 2002 and 2017 at Tenon University Hospital (Paris, France)...
April 14, 2018: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/29665316/clinical-significance-of-tm4sf1-as-a-tumor-suppressor-gene-in-gastric-cancer
#11
Xing-Chun Peng, Zhi Zeng, Yu-Ning Huang, Yun-Chao Deng, Guo-Hui Fu
Transmembrane-4-L-six-family member-1 (TM4SF1), a tumor-associated antigen, is overexpressed in most epithelial cell carcinomas and a potential target for antibody-mediated therapy. However, the role of TM4SF1 in gastric cancer has not been elucidated. The aim of this study was to investigate the clinical significance of TM4SF1 expression in gastric carcinoma (GC) tissues using 152 GC tissue samples and matched adjacent nontumor tissue samples analyzed by immunohistochemistry, and 13 fresh GC tissue samples analyzed by Western blotting...
April 17, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29663173/current-status-of-neoadjuvant-endocrine-therapy-in-early-stage-breast-cancer
#12
REVIEW
Tomás Reinert, Rodrigo Gonçalves, Matthew J Ellis
Neoadjuvant endocrine therapy (NET) with Ki67-based response monitoring is a practical, cost-effective approach to the management of clinical stage II and III estrogen receptor-positive (ER+) breast cancer. In addition to marked improvements in rates of breast conservation, the identification of extreme responders on the basis of the preoperative endocrine prognostic index (PEPI) provides a rationale to avoid chemotherapy on the basis of highly favorable prognosis in some patients. Finally, samples accrued from patients treated with neoadjuvant therapy are providing valuable insights into the molecular basis for intrinsic resistance to endocrine therapy and promise a more rational basis and precise approach to the systemic treatment of ER+ breast cancer...
April 16, 2018: Current Treatment Options in Oncology
https://www.readbyqxmd.com/read/29663141/tacrolimus-loaded-peg-cholecalciferol-based-micelles-for-treatment-of-ocular-inflammation
#13
Shallu Kutlehria, Imran Vhora, Arvind Bagde, Nusrat Chowdhury, Gautam Behl, Ketan Patel, Mandip Singh
PURPOSE: Poor corneal permeability, nasolacrimal drainage and requirement of chronic administration are major drawbacks of existing therapies for ocular inflammation. Hence, we designed topical micelles of PEG2000 conjugated with cholecalciferol (PEGCCF). METHODS: Integrin targeted tacrolimus loaded PEGCCF micelles (TTM) were prepared by solvent diffusion evaporation method and characterized for particle size, osmolality, encapsulation efficiency and drug loading...
April 16, 2018: Pharmaceutical Research
https://www.readbyqxmd.com/read/29662647/characterization-of-increasing-stages-of-invasiveness-identifies-stromal-cancer-cell-crosstalk-in-rat-models-of-mesothelioma
#14
Joëlle S Nader, Jérôme Abadie, Sophie Deshayes, Alice Boissard, Stéphanie Blandin, Christophe Blanquart, Nicolas Boisgerault, Olivier Coqueret, Catherine Guette, Marc Grégoire, Daniel L Pouliquen
Sarcomatoid mesothelioma (SM) is a devastating cancer associated with one of the poorest outcome. Therefore, representative preclinical models reproducing different tumor microenvironments (TME) observed in patients would open up new prospects for the identification of markers and evaluation of innovative therapies. Histological analyses of four original models of rat SM revealed their increasing infiltrative and metastatic potential were associated with differences in Ki67 index, blood-vessel density, and T-lymphocyte and macrophage infiltration...
March 27, 2018: Oncotarget
https://www.readbyqxmd.com/read/29659431/preliminary-study-on-molecular-subtypes-of-breast-cancer-based-on-magnetic-resonance-imaging-texture-analysis
#15
Xinru Sun, Bing He, Xin Luo, Yuhua Li, Jinfeng Cao, Jinlan Wang, Jun Dong, Xiaoyu Sun, Guangxia Zhang
OBJECTIVE: The aim of the study was to investigate the molecular subtypes of breast cancer based on the texture features derived from magnetic resonance images (MRIs). METHODS: One hundred seven patients with preoperative confirmed breast cancer were recruited. One hundred eight breast lesions were divided into 4 subtypes according to the status of estrogen receptor, progesterone receptor, human epidermal growth factor receptor type 2, and Ki67. Fisher discriminant analysis was performed on the texture features that extracted from the enhanced high-resolution T1-weighted images and diffusion weighted images to establish the classification model of molecular subtypes...
April 13, 2018: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/29658459/-effect-of-ceftriaxone-on-the-intestinal-epithelium-and-microbiota-in-neonatal-mice
#16
Qun Wan, Ru-Yue Cheng, Jia-Wen Guo, Ke Wang, Xi Shen, Fang-Fang Pu, Ming Li, Fang He
OBJECTIVE: To investigate the effect of ceftriaxone on the intestinal epithelium and microbiota in mice in the early-life stage, as well as the recovery of the intestinal epithelium and reconstruction of intestinal microbiota in adult mice. METHODS: A total of 36 BALB/C neonatal mice were randomly divided into control group and experimental group, with 18 mice in each group. The mice in the experimental group were given ceftriaxone 100 mg/kg every day by gavage within 21 days after birth...
April 2018: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29656498/helicobacter-pylori-infection-induced-h3ser10-phosphorylation-in-stepwise-gastric-carcinogenesis-and-its-clinical-implications
#17
Tao-Tao Yang, Na Cao, Hai-Hui Zhang, Jian-Bo Wei, Xiao-Xia Song, Dong-Min Yi, Shuai-Heng Chao, Li-Da Zhang, Ling-Fei Kong, Shuang-Yin Han, Yu-Xiu Yang, Song-Ze Ding
BACKGROUND: Our previous works have demonstrated that Helicobacter pylori (Hp) infection can alter histone H3 serine 10 phosphorylation status in gastric epithelial cells. However, whether Helicobacter pylori-induced histone H3 serine 10 phosphorylation participates in gastric carcinogenesis is unknown. We investigate the expression of histone H3 serine 10 phosphorylation in various stages of gastric disease and explore its clinical implication. MATERIALS AND METHODS: Stomach biopsy samples from 129 patients were collected and stained with histone H3 serine 10 phosphorylation, Ki67, and Helicobacter pylori by immunohistochemistry staining, expressed as labeling index...
April 15, 2018: Helicobacter
https://www.readbyqxmd.com/read/29653142/characterization-of-a-conjunctival-melanoma-cell-line-cm-as16-newly-established-from-a-metastatic-han-chinese-patient
#18
Yongyun Li, Qingfeng Shang, Peng Li, Jinfeng Cao, Liqi Zhu, Martine J Jager, Xianqun Fan, Shengfang Ge, Renbing Jia
Conjunctival melanoma (CM) is associated with metastases formation, can be fatal, and occurs in all different races. While cell lines are essential for experimental research, all available CM cell lines are derived from Caucasian patients. Furthermore, they are not derived from metastases. We aimed to establish a new CM cell line from a parotid metastasis in a Han Chinese patient and to depict its characteristics. The novel cell line, CM-AS16, was obtained from a surgical parotid sample and determined as a unique one with short tandem repeat (STR) analysis...
April 10, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29651403/enhanced-wound-healing-after-leiomyoma-enucleation
#19
Masood Amini, Mohammad Hassan Hashemizadeh, Seyedeh Leila Poorbaghi
Leiomyoma is a rare esophageal tumor that constitutes less than 1% of esophageal malignancies. It should be removed when diagnosed even if asymptomatic. This study presents two cases of esophageal leiomyoma in 38 and 62 years old men who presented with dysphagia and evaluated for diagnosis and location of related tumors. Patients were clinically examined and upper gastrointestinal endoscopy, chest computerized tomography scan, barium swallow and endoscopic ultrasonography were performed. The masses were diagnosed and both patients underwent 3-port right videothoracoscopic enucleation of esophageal leiomyoma with sleeve calibration tube (SCT) assistance...
January 2018: World Journal of Plastic Surgery
https://www.readbyqxmd.com/read/29649302/identifying-tumor-in-pancreatic-neuroendocrine-neoplasms-from-ki67-images-using-transfer-learning
#20
Muhammad Khalid Khan Niazi, Thomas Erol Tavolara, Vidya Arole, Douglas J Hartman, Liron Pantanowitz, Metin N Gurcan
The World Health Organization (WHO) has clear guidelines regarding the use of Ki67 index in defining the proliferative rate and assigning grade for pancreatic neuroendocrine tumor (NET). WHO mandates the quantification of Ki67 index by counting at least 500 positive tumor cells in a hotspot. Unfortunately, Ki67 antibody may stain both tumor and non-tumor cells as positive depending on the phase of the cell cycle. Likewise, the counter stain labels both tumor and non-tumor as negative. This non-specific nature of Ki67 stain and counter stain therefore hinders the exact quantification of Ki67 index...
2018: PloS One
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