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https://www.readbyqxmd.com/read/28088463/stress-induced-egf-receptor-signaling-through-stat3-and-tumor-progression-in-triple-negative-breast-cancer
#1
Nikolas Balanis, Cathleen R Carlin
Elevated STAT3 activity is a hallmark of many epithelial carcinomas particularly in breast cancers where it is known to contribute to tumor progression through a variety of context-dependent biological responses. However, its role downstream of stress-exposed EGF receptors (EGFR) that are transactivated in endosomes independent of exogenous ligand has not been studied. This review discusses how STAT3 signaling induced by therapeutic stress in EGFR-driven triple-negative breast cancers (TNBC) might override normal epithelial homeostatic mechanisms and provide a survival advantage for tumor cells before they leave the primary tumor and spread to distant sites...
January 11, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28087969/axillary-accessory-breast-carcinoma-masquerading-as-axillary-abscess-a-case-report
#2
S Y Lim, S L Jee, T Gee, E Nor Aina
Accessory breast is a frequently seen developmental breast abnormality, commoner among Asians than Caucasians. This ectopic breast tissue shares many similarities as the normal breast tissue, and although subjected to the same pathological processes, accessory breast carcinoma is rare. As locations of the accessory breast may be variable, detection of pathological lesions through clinical examinations and standard diagnostic tools (i.e., mammogram) can be difficult. Staging and management should be tailored-made according to the location of the accessory breast as well as its known pattern of lymphatic drainage...
December 2016: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/28087479/synthesis-and-characterization-of-gold-nanostructured-chorin-e6-for-photodynamic-therapy
#3
L Vieira, M L Castilho, I Ferreira, J Ferreira-Strixino, K C Hewitt, L Raniero
Photodynamic therapy is an alternative treatment for cancer based on cellular uptake of a photosensitizer, illuminated with an appropriate wavelength in the presence of oxygen. A cascade of reactions generates reactive oxygen species leading to cell death. Using carbodiimide chemistry, chlorin e6 (Ce6) was covalently bonded to thiourea, and (via the sulphur end group) to gold nanoparticles (AuNPs), forming the Ce6-AuNP complex. Ce6 absorbs in the range 650-680nm, where the coefficient of biological tissue absorption is low (part of the therapeutic window), which is ideal for biological application...
January 10, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28087477/overexpression-of-tumor-necrosis-factor-%C3%AE-induced-protein-8-tnfaip8-is-associated-with-tumor-aggressiveness-and-poor-prognosis-in-patients-with-invasive-ductal-breast-carcinoma
#4
Min Xiao, QingYong Xu, Chun Lou, Yu Qin, XiaoMing Ning, TianBo Liu, XuHai Zhao, ShuSheng Jia, YuanXi Huang
Tumor necrosis factor-α-induced protein 8 (TNFAIP8), a transcription factor NF-κB-inducible, antiapoptotic and oncogenic molecule, is associated with prognosis of several human malignancies. However, the relationship between TNFAIP8 and the prognosis of the invasive ductal carcinoma (IDC) of the breast remains unclear. TNFAIP8 expression was evaluated using real-time PCR and Western blot analysis in 20 fresh IDC tissues, and immunohistochemical analysis in 351 paraffin-embedded IDC tissues. Real-time PCR and Western blot analysis demonstrated that both TNFAIP8 mRNA and protein were upregulated in IDC tissues compared with the paired adjacent noncancerous tissues...
January 10, 2017: Human Pathology
https://www.readbyqxmd.com/read/28087402/accuracy-is-in-the-eyes-of-the-pathologist-the-visual-interpretive-process-and-diagnostic-accuracy-with-digital-whole-slide-images
#5
Tad T Brunyé, Ezgi Mercan, Donald L Weaver, Joann G Elmore
Digital whole slide imaging is an increasingly common medium in pathology, with application to education, telemedicine, and rendering second opinions. It has also made it possible to use eye tracking devices to explore the dynamic visual inspection and interpretation of histopathological features of tissue while pathologists review cases. Using whole slide images, the present study examined how a pathologist's diagnosis is influenced by fixed case-level factors, their prior clinical experience, and their patterns of visual inspection...
January 10, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28087261/dna-aptamer-probes-for-detection-of-estrogen-receptor-%C3%AE-positive-carcinomas
#6
Arghya Sett, Bibhuti Bhusan Borthakur, Jagannath Dev Sharma, Amal Chandra Kataki, Utpal Bora
Estrogen receptor alpha (ERα) which is a ligand-activated transcription factor also known as NR3A1 (nuclear receptor subfamily 3, group A, member 1). It is an important biomarker for breast cancer metastasis. In the present study, we report a novel DNA aptamer candidate against estrogen receptor (ER) alpha structure. The enriched aptamer candidate was obtained after 14 iterative cycles of in vitro protein-SELEX process. Isothermal calorimetry study suggests the nanomolar sensitivity of the candidate ER_Apt1 to its target protein...
December 25, 2016: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28086982/reproductive-factors-and-the-risk-of-triple-negative-breast-cancer-in-white-women-and-african-american-women-a-pooled-analysis
#7
Huiyan Ma, Giske Ursin, Xinxin Xu, Eunjung Lee, Kayo Togawa, Lei Duan, Yani Lu, Kathleen E Malone, Polly A Marchbanks, Jill A McDonald, Michael S Simon, Suzanne G Folger, Jane Sullivan-Halley, Dennis M Deapen, Michael F Press, Leslie Bernstein
BACKGROUND: Early age at menarche, nulliparity, late age at first completed pregnancy, and never having breastfed, are established breast cancer risk factors. However, among breast cancer subtypes, it remains unclear whether all of these are risk factors for triple-negative breast cancer (TNBC). METHODS: We evaluated the associations of these reproductive factors with TNBC, in 2658 patients with breast cancer (including 554 with TNBC) and 2448 controls aged 20-64 years, who participated in one of the three population-based case-control studies: the Women's Contraceptive and Reproductive Experiences Study, the Women's Breast Carcinoma in situ Study, or the Women's Learning the Influence of Family and Environment Study...
January 13, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28079792/amplification-of-her2-and-top2a-and-deletion-of-top2a-genes-in-a-series-of-taiwanese-breast-cancer
#8
Jim-Ray Chen, Hui-Ping Chien, Kuo-Su Chen, Cheng-Cheng Hwang, Huang-Yang Chen, Kun-Yan Yeh, Tsan-Yu Hsieh, Liang-Che Chang, Yuan-Chun Hsu, Ren-Jie Lu, Chung-Ching Hua
BACKGROUND: The prognostic relevance of topoisomerase II alpha (TOP2A) copy number change remains not well established. This study is aimed to investigate the frequency and pattern of TOP2A aberrations; to correlate TOP2A alterations with human epidermal growth factor receptor 2 (HER2) status and clinicopathological parameters, and further to explore prognostic value of TOP2A and HER2 status in breast cancer in Taiwan. METHODS: We analyzed tissue samples from 311 invasive carcinomas in tissue microarrays for TOP2A and HER2 status by fluorescent in situ hybridization...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28078498/perinatal-exposure-to-bisphenol-a-or-diethylstilbestrol-increases-the-susceptibility-to-develop-mammary-gland-lesions-after-estrogen-replacement-therapy-in-middle-aged-rats
#9
Ayelen L Gomez, Melisa B Delconte, Gabriela A Altamirano, Lucia Vigezzi, Veronica L Bosquiazzo, Luís F Barbisan, Jorge G Ramos, Enrique H Luque, Mónica Muñoz-de-Toro, Laura Kass
The development of the mammary gland is a hormone-regulated event. Several factors can dysregulate its growth and make the gland more susceptible to cellular transformation. Among these factors, perinatal exposure to xenoestrogens and hormone replacement therapy has been associated with increased risk of developing breast cancer. Here, we assessed the effects induced by estrogen replacement therapy (ERT) in ovariectomized (OVX) middle-aged rats and whether perinatal exposure to diethylstilbestrol (DES) or bisphenol A (BPA) modified these effects in the mammary gland...
January 11, 2017: Hormones & Cancer
https://www.readbyqxmd.com/read/28076843/pax-5-is-a-potent-regulator-of-e-cadherin-and-breast-cancer-malignant-processes
#10
Sami Benzina, Annie-Pier Beauregard, Roxann Guerrette, Stéphanie Jean, Mame Daro Faye, Mark Laflamme, Emmanuel Maïcas, Nicolas Crapoulet, Rodney J Ouellette, Gilles A Robichaud
Pax-5, an essential transcription factor for B lymphocyte development, has been linked with the development and progression of lymphoid cancers and carcinoma. In contrast to B-cell cancer lesions, the specific expression signatures and roles of Pax-5 in breast cancer progression are relatively unknown. In the present study, we set out to profile Pax-5 expression in mammary tissues and elucidate the cellular and molecular roles of Pax-5 in breast cancer processes. Using immunohistology on mammary tissue arrays, Pax-5 was detected in a total of 298/306 (97...
January 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28076009/delineating-extramammary-findings-at-breast-mr-imaging
#11
Yiming Gao, Opeyemi Ibidapo, Hildegard K Toth, Linda Moy
Breast magnetic resonance (MR) imaging is the only breast imaging modality that consistently encompasses extramammary structures in the thorax and upper abdomen. Incidental extramammary findings on breast MR images of patients with a history of breast cancer or other malignancies are significantly more likely to be malignant and may affect staging and treatment. An understanding of the frequency, distribution, and context of extramammary findings on breast MR images and a familiarity with common and uncommon sites of breast cancer metastasis inform the differential diagnosis and prompt the appropriate diagnostic next step, to differentiate benign from malignant findings...
January 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28075663/comparative-study-of-her-2-p53-ki-67-expression-and-clinicopathological-characteristics-of-breast-cancer-in-a-cohort-of-northern-china-female-patients
#12
Li Ding, Zijin Zhang, Yan Xu, Yongqiang Zhang
OBJECTIVE: To study the relationship among Her-2, Ki-67, p53 expression and the clinicopathologic characteristics of breast cancer in the patients of northern China. METHODS: Expression of Her-2, Ki-67, p53 and clinical characteristics of 260 breast cancer patients were retrospectively studied. RESULTS: Her-2 overexpression led to higher incidence rates of infiltrating ductal carcinoma and axillary lymph node metastasis, bigger diameters of the primary tumors, later pTNM staging, and a lower incidence rate of ductal carcinoma in situ (p < 0...
January 11, 2017: Bioengineered
https://www.readbyqxmd.com/read/28075527/recent-development-of-the-second-and-third-generation-irreversible-egfr-inhibitors
#13
REVIEW
Weiwei Han, Yongli Du
Recent reports suggested that essential directions for new lung cancer, breast carcinoma therapies, as well as the roomier realm of targeted cancer therapies were provided through targeting the epidermal growth factor receptor (EGFR). Patients who carrying non-small cell lung carcinoma (NSCLC) with activating mutations in EGFR initially respond well to the EGFR inhibitors erlotinib and gefitinib, which were located the active site of the EGFR kinase and designed to act as competitive inhibitors of combining with the ATP...
January 11, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28074721/-capecitabine-induced-ventricular-fibrillation
#14
A V van Capelle, J de Valk, D Schakenraad, T Germans, D Ten Oever
BACKGROUND: Capecitabine is an orally-administered chemotherapeutic agent used in the treatment of colorectal, gastric and breast carcinoma. Capecitabine has relatively mild side effects. Less known are its potential severe cardiotoxic effects. CASE DESCRIPTION: We report a case of a 61-year-old man recently diagnosed with rectal cancer. Six days after starting with capecitabine, he developed a cardiac arrest due to ventricular fibrillation (VF). Extensive additional diagnostics did not explain the cardiac arrest nor VF...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28074314/a-novel-effect-of-%C3%AE-adrenergic-receptor-on-mammary-branching-morphogenesis-and-its-possible-implications-in-breast-cancer
#15
Lucía Gargiulo, María May, Ezequiel M Rivero, Sabrina Copsel, Caroline Lamb, John Lydon, Carlos Davio, Claudia Lanari, Isabel A Lüthy, Ariana Bruzzone
Understanding the mechanisms that govern normal mammary gland development is crucial to the comprehension of breast cancer etiology. β-adrenergic receptors (β-AR) are targets of endogenous catecholamines such as epinephrine that have gained importance in the context of cancer biology. Differences in β2-AR expression levels may be responsible for the effects of epinephrine on tumor vs non-tumorigenic breast cell lines, the latter expressing higher levels of β2-AR. To study regulation of the breast cell phenotype by β2-AR, we over-expressed β2-AR in MCF-7 breast cancer cells and knocked-down the receptor in non-tumorigenic MCF-10A breast cells...
January 11, 2017: Journal of Mammary Gland Biology and Neoplasia
https://www.readbyqxmd.com/read/28073775/dasatinib-changes-immune-cell-profiles-concomitant-with-reduced-tumor-growth-in-several-murine-solid-tumor-models
#16
Can Hekim, Mette Ilander, Jun Yan, Erin Michaud, Richard Smykla, Markus Vähä-Koskela, Paula Savola, Siri Tähtinen, Leena Saikko, Akseli Hemminki, Panu E Kovanen, Kimmo Porkka, Francis Yf Lee, Satu Mustjoki
Dasatinib, a broad range tyrosine kinase inhibitor (TKI), induces rapid mobilization of lymphocytes and clonal expansion of cytotoxic cells in leukemia patients. Here, we investigated whether dasatinib could induce beneficial immunomodulatory effects in solid tumor models. The effects on tumor growth and on the immune system were studied in four different syngeneic mouse models (B16.OVA melanoma, 1956 sarcoma, MC38 colon, and 4T1 breast carcinoma). Both peripheral blood (PB) and tumor samples were immunophenotyped during treatment...
January 10, 2017: Cancer Immunology Research
https://www.readbyqxmd.com/read/28073726/breast-cancer-in-women-younger-than-35%C3%A2-years%C3%A2-features-and-outcomes-in-the-breast-unit-at-aristide-le-dantec-teaching-hospital-dakar
#17
M Gueye, S M Kane Gueye, M D Ndiaye Gueye, F Niasse Dia, O Gassama, M Diallo, J C Moreau
The aim of this study was to determine the clinical features and outcomes of women younger than 35 years with breast cancer. This study was performed at Gynecologic and Obstetric Clinic of Dakar Teaching Hospital and retrospectively reviewed the records of all women younger than 35 years seen in our department for histologically proven breast cancer. Data were analyzed with SPSS software (Statistical Package for Social Science) Version 23. Between 2007 and 2015, 62 women with breast cancer met the inclusion criteria and were included...
November 1, 2016: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/28072973/-expression-of-foxm1-and-bcrp-in-invasive-breast-carcinoma-of-no-special-type-and-its-prognosis-significance
#18
Y Liu, Y P Liu, J Y Liu, H C Yang, Z D Wang
Objective: To investigate the relationship between expression of FoxM1 and BCRP in invasive breast carcinoma of no special type (IBC-NST) tissues and the clinical pathological characteristics and prognosis of the patients. Methods: Seventy-eight cases of IBC-NST with excision were included. The expression of FoxM1 and BCRP was assessed by immunohistochemistry and its relationship with the clinical pathological characteristics and prognosis was evaluated. Results: FoxM1 was expressed in 71.8%(56/78) of IBC-NST, and the expression was related to tumor diameter, TNM staging, ER, PR and HER2...
January 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28072972/-clinicopathologic-features-of-adenoid-cystic-carcinoma-of-breast
#19
S P Guo, Q L Li, Y M Wang, K X Zeng, Y Liu, W N Xu, X M Zhang
Objective: To investigate the clinicopathologic features and grading of adenoid cystic carcinoma (ACC) of the breast. Methods: Sixteen cases of ACC of the breast were analyzed and graded according to the previous report. Immunohistochemical (IHC) staining was used to detect the immunophenotype, Ki-67 proliferative index and expression of EZH2, and the association with tumor grade and outcome was analyzed. Results: Of the 16 cases, 11 were grade Ⅰ, with the epithelial and myoepithelial cells being arranged into tubular and cribriform structure with no solid component; three were grade Ⅱ, which were composed of mixed tubular, cribriform and solid component (<30%); and two were grade Ⅲ, which showed mainly solid component (>90%) and the tumor cells showed basaloid features with scanty cytoplasm and hyperchromatic nuclei, and mitotic count was>5/10 HPF...
January 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28072971/-expression-of-pd-1-pd-l1-in-triple-negative-breast-carcinoma-and-its-significance
#20
W Zhang, G X Xu, J J Li, X Liu, Y J Chen, F Zhang
Objective: To investigate the correlation between the expression of PD-1, PD-L1 and clinicopathologic parameters in triple negative breast carcinoma (TNBC). Methods: Samples from 151 patients with TNBC and 65 cases of other breast carcinomas (non-TNBC) were examined for PD-L1 and PD-1 expression by immunohistochemical staining on tissue microarray. Results: The expression of PD-L1 and PD-1 in the tumor cells and interstitial lymphocytes in TNBC was significantly (P<0.05)higher than that in non-TNBC.In TNBC, the expression rates of PD-L1 in the cancer nests and stroma were 16...
January 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
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