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Breast Cancer Research: BCR

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https://www.readbyqxmd.com/read/28103936/elevated-collagen-i-augments-tumor-progressive-signals-intravasation-and-metastasis-of-prolactin-induced-estrogen-receptor-alpha-positive-mammary-tumor-cells
#1
Craig E Barcus, Kathleen A O'Leary, Jennifer L Brockman, Debra E Rugowski, Yuming Liu, Nancy Garcia, Menggang Yu, Patricia J Keely, Kevin W Eliceiri, Linda A Schuler
BACKGROUND: The development and progression of estrogen receptor alpha positive (ERα+) breast cancer has been linked epidemiologically to prolactin. However, activation of the canonical mediator of prolactin, STAT5, is associated with more differentiated cancers and better prognoses. We have reported that density/stiffness of the extracellular matrix potently modulates the repertoire of prolactin signals in human ERα + breast cancer cells in vitro: stiff matrices shift the balance from the Janus kinase (JAK)2/STAT5 cascade toward pro-tumor progressive extracellular regulated kinase (ERK)1/2 signals, driving invasion...
January 19, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28103902/relationship-between-crown-like-structures-and-sex-steroid-hormones-in-breast-adipose-tissue-and-serum-among-postmenopausal-breast-cancer-patients
#2
Maeve Mullooly, Hannah P Yang, Roni T Falk, Sarah J Nyante, Renata Cora, Ruth M Pfeiffer, Derek C Radisky, Daniel W Visscher, Lynn C Hartmann, Jodi M Carter, Amy C Degnim, Frank Z Stanczyk, Jonine D Figueroa, Montserrat Garcia-Closas, Jolanta Lissowska, Melissa A Troester, Stephen M Hewitt, Louise A Brinton, Mark E Sherman, Gretchen L Gierach
BACKGROUND: Postmenopausal obesity is associated with increased circulating levels of androgens and estrogens and elevated breast cancer risk. Crown-like structures (CLS; microscopic foci of dying adipocytes surrounded by macrophages) are proposed to represent sites of increased aromatization of androgens to estrogens. Accordingly, we examined relationships between CLS and sex-steroid hormones in breast adipose tissue and serum from postmenopausal breast cancer patients. METHODS: Formalin-fixed paraffin embedded benign breast tissues collected for research from postmenopausal women (n = 83) diagnosed with invasive breast cancer in the Polish Breast Cancer Study (PBCS) were evaluated...
January 19, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28095868/pik3ca-mutations-are-common-in-lobular-carcinoma-in-situ-but-are-not-a-biomarker-of-progression
#3
Vandna Shah, Salpie Nowinski, Dina Levi, Irek Shinomiya, Narda Kebaier Ep Chaabouni, Cheryl Gillett, Anita Grigoriadis, Trevor A Graham, Rebecca Roylance, Michael A Simpson, Sarah E Pinder, Elinor J Sawyer
BACKGROUND: Lobular carcinoma in situ (LCIS) is a non-invasive breast lesion that is typically found incidentally on biopsy and is often associated with invasive lobular carcinoma (ILC). LCIS is considered by some to be a risk factor for future breast cancer rather than a true precursor lesion. The aim of this study was to identify genetic changes that could be used as biomarkers of progression of LCIS to invasive disease using cases of pure LCIS and comparing their genetic profiles to LCIS which presented contemporaneously with associated ILC, on the hypothesis that the latter represents LCIS that has already progressed...
January 17, 2017: Breast Cancer Research: BCR
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
#4
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/28077164/erratum-to-novel-sorafenib-analogues-induce-apoptosis-through-shp-1-dependent-stat3-inactivation-in-human-breast-cancer-cells
#5
Chun-Yu Liu, Ling-Ming Tseng, Jung-Chen Su, Kung-Chi Chang, Pei-Yi Chu, Wei-Tien Tai, Chung-Wai Shiau, Kuen-Feng Chen
No abstract text is available yet for this article.
January 11, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28077158/ccl2-driven-inflammation-increases-mammary-gland-stromal-density-and-cancer-susceptibility-in-a-transgenic-mouse-model
#6
Xuan Sun, Danielle J Glynn, Leigh J Hodson, Cecilia Huo, Kara Britt, Erik W Thompson, Lucy Woolford, Andreas Evdokiou, Jeffrey W Pollard, Sarah A Robertson, Wendy V Ingman
BACKGROUND: Macrophages play diverse roles in mammary gland development and breast cancer. CC-chemokine ligand 2 (CCL2) is an inflammatory cytokine that recruits macrophages to sites of injury. Although CCL2 has been detected in human and mouse mammary epithelium, its role in regulating mammary gland development and cancer risk has not been explored. METHODS: Transgenic mice were generated wherein CCL2 is driven by the mammary epithelial cell-specific mouse mammary tumour virus 206 (MMTV) promoter...
January 11, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28057046/prognostic-role-of-neutrophil-to-lymphocyte-ratio-in-breast-cancer-a-systematic-review-and-meta-analysis
#7
Josee-Lyne Ethier, Danielle Desautels, Arnoud Templeton, Prakesh S Shah, Eitan Amir
BACKGROUND: The presence of a high neutrophil-to-lymphocyte ratio (NLR) has been associated with increased mortality in several malignancies. Here, we quantify the effect of NLR on survival in patients with breast cancer, and examine the effect of clinicopathologic factors on its prognostic value. METHODS: A systematic search of electronic databases was conducted to identify publications exploring the association of blood NLR (measured pre treatment) and overall survival (OS) and disease-free survival (DFS) among patients with breast cancer...
January 5, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28057031/-18-fdg-pet-ct-for-predicting-the-outcome-in-er-her2-breast-cancer-patients-comparison-of-clinicopathological-parameters-and-pet-image-derived-indices-including-tumor-texture-analysis
#8
David Groheux, Antoine Martineau, Luis Teixeira, Marc Espié, Patricia de Cremoux, Philippe Bertheau, Pascal Merlet, Charles Lemarignier
BACKGROUND: This study investigated the value of some clinicopathological parameters and 18 F-fluorodeoxyglucose-positron emission tomography/computed tomography ((18)FDG-PET/CT) indices, including textural features, to predict event-free survival (EFS) in estrogen receptor-positive/human epidermal growth factor receptor 2-negative (ER+/HER2-) locally advanced breast cancer (BC) patients. METHODS: FDG-PET/CT indices and clinicopathological parameters were assessed before neoadjuvant chemotherapy (NAC)...
January 5, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28052757/erratum-to-mammographic-texture-and-risk-of-breast-cancer-by-tumor-type-and-estrogen-receptor-status
#9
Serghei Malkov, John A Shepherd, Christopher G Scott, Rulla M Tamimi, Lin Ma, Kimberly A Bertrand, Fergus Couch, Matthew R Jensen, Amir P Mahmoudzadeh, Bo Fan, Aaron Norman, Kathleen R Brandt, V Shane Pankratz, Celine M Vachon, Karla Kerlikowske
No abstract text is available yet for this article.
January 4, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28003027/lifetime-body-size-and-estrogen-receptor-positive-breast-cancer-risk-in-the-california-teachers-study-cohort
#10
Pamela L Horn-Ross, Alison J Canchola, Leslie Bernstein, Susan L Neuhausen, David O Nelson, Peggy Reynolds
BACKGROUND: Obesity is a public health epidemic and an important breast cancer risk factor. The relationship between interrelated body measurements is complex and most studies fail to account for this complexity. We identified key aspects of body size which jointly, over the life-course (since adolescence), are associated with estrogen-receptor-positive (ER+) breast cancer risk. METHODS: Among 109,862 women participating in the California Teachers Study cohort, 3844 were diagnosed with invasive ER+ breast cancer between 1997-1998 and December 2011...
December 21, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27998284/the-glucose-transporter-glut1-is-required-for-erbb2-induced-mammary-tumorigenesis
#11
Elizabeth A Wellberg, Stevi Johnson, Jessica Finlay-Schultz, Andrew S Lewis, Kristina L Terrell, Carol A Sartorius, E Dale Abel, William J Muller, Steven M Anderson
BACKGROUND: Altered tumor cell metabolism is an emerging hallmark of cancer; however, the precise role for glucose in tumor initiation is not known. GLUT1 (SLC2A1) is expressed in breast cancer cells and is likely responsible for avid glucose uptake observed in established tumors. We have shown that GLUT1 was necessary for xenograft tumor formation from primary mammary cells transformed with the polyomavirus middle-T antigen but that it was not necessary for growth after tumors had formed in vivo, suggesting a differential requirement for glucose depending on the stage of tumorigenesis...
December 20, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27993168/mammographic-density-assessed-on-paired-raw-and-processed-digital-images-and-on-paired-screen-film-and-digital-images-across-three-mammography-systems
#12
Anya Burton, Graham Byrnes, Jennifer Stone, Rulla M Tamimi, John Heine, Celine Vachon, Vahit Ozmen, Ana Pereira, Maria Luisa Garmendia, Christopher Scott, John H Hipwell, Caroline Dickens, Joachim Schüz, Mustafa Erkin Aribal, Kimberly Bertrand, Ava Kwong, Graham G Giles, John Hopper, Beatriz Pérez Gómez, Marina Pollán, Soo-Hwang Teo, Shivaani Mariapun, Nur Aishah Mohd Taib, Martín Lajous, Ruy Lopez-Riduara, Megan Rice, Isabelle Romieu, Anath Arzee Flugelman, Giske Ursin, Samera Qureshi, Huiyan Ma, Eunjung Lee, Reza Sirous, Mehri Sirous, Jong Won Lee, Jisun Kim, Dorria Salem, Rasha Kamal, Mikael Hartman, Hui Miao, Kee-Seng Chia, Chisato Nagata, Sudhir Vinayak, Rose Ndumia, Carla H van Gils, Johanna O P Wanders, Beata Peplonska, Agnieszka Bukowska, Steve Allen, Sarah Vinnicombe, Sue Moss, Anna M Chiarelli, Linda Linton, Gertraud Maskarinec, Martin J Yaffe, Norman F Boyd, Isabel Dos-Santos-Silva, Valerie A McCormack
BACKGROUND: Inter-women and intra-women comparisons of mammographic density (MD) are needed in research, clinical and screening applications; however, MD measurements are influenced by mammography modality (screen film/digital) and digital image format (raw/processed). We aimed to examine differences in MD assessed on these image types. METHODS: We obtained 1294 pairs of images saved in both raw and processed formats from Hologic and General Electric (GE) direct digital systems and a Fuji computed radiography (CR) system, and 128 screen-film and processed CR-digital pairs from consecutive screening rounds...
December 19, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27993161/circulating-cell-free-dna-based-epigenetic-assay-can-detect-early-breast-cancer
#13
Natsue Uehiro, Fumiaki Sato, Fengling Pu, Sunao Tanaka, Masahiro Kawashima, Kosuke Kawaguchi, Masahiro Sugimoto, Shigehira Saji, Masakazu Toi
BACKGROUND: Circulating cell-free DNA (cfDNA) has recently been recognized as a resource for biomarkers of cancer progression, treatment response, and drug resistance. However, few have demonstrated the usefulness of cfDNA for early detection of cancer. Although aberrant DNA methylation in cfDNA has been reported for more than a decade, its diagnostic accuracy remains unsatisfactory for cancer screening. Thus, the aim of the present study was to develop a highly sensitive cfDNA-based system for detection of primary breast cancer (BC) using epigenetic biomarkers and digital PCR technology...
December 19, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27978856/involution-of-breast-tissue-and-mammographic-density
#14
Gertraud Maskarinec, Dan Ju, David Horio, Lenora W M Loo, Brenda Y Hernandez
BACKGROUND: Mammographic density decreases and involution of breast tissue increases with age; both are thought to be risk factors for breast cancer. The current study investigated the relationship between involution or hormone treatment (HT) and breast density among multiethnic patients with breast cancer in Hawaii. METHODS: Patients with breast cancer cases were recruited from a nested case-control study within the Multiethnic Cohort. HT use was self-reported at cohort entry and at the time of the density study...
December 15, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27964754/imaging-the-mammary-gland-and-mammary-tumours-in-3d-optical-tissue-clearing-and-immunofluorescence-methods
#15
Bethan Lloyd-Lewis, Felicity M Davis, Olivia B Harris, Jessica R Hitchcock, Filipe C Lourenco, Mathias Pasche, Christine J Watson
BACKGROUND: High-resolution 3D imaging of intact tissue facilitates cellular and subcellular analyses of complex structures within their native environment. However, difficulties associated with immunolabelling and imaging fluorescent proteins deep within whole organs have restricted their applications to thin sections or processed tissue preparations, precluding comprehensive and rapid 3D visualisation. Several tissue clearing methods have been established to circumvent issues associated with depth of imaging in opaque specimens...
December 13, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27955684/safety-and-efficacy-of-vinorelbine-in-combination-with-pertuzumab-and-trastuzumab-for-first-line-treatment-of-patients-with-her2-positive-locally-advanced-or-metastatic-breast-cancer-velvet-cohort-1-final-results
#16
Edith A Perez, José Manuel López-Vega, Thierry Petit, Claudio Zamagni, Valerie Easton, Julia Kamber, Eleonora Restuccia, Michael Andersson
BACKGROUND: Pertuzumab, trastuzumab, and docetaxel is standard of care for first-line treatment of HER2-positive metastatic breast cancer (MBC). However, alternative chemotherapy partners are required to align with patient/physician preferences and to increase treatment flexibility. We report VELVET Cohort 1 results in which the efficacy and safety of pertuzumab and trastuzumab, administered sequentially in separate infusions, followed by vinorelbine, were evaluated. Cohort 2, where pertuzumab and trastuzumab were administered in a single infusion, followed by vinorelbine, recruited after Cohort 1 was fully enrolled, will be reported later...
December 13, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27931260/prediction-of-breast-cancer-risk-based-on-common-genetic-variants-in-women-of-east-asian-ancestry
#17
Wanqing Wen, Xiao-Ou Shu, Xingyi Guo, Qiuyin Cai, Jirong Long, Manjeet K Bolla, Kyriaki Michailidou, Joe Dennis, Qin Wang, Yu-Tang Gao, Ying Zheng, Alison M Dunning, Montserrat García-Closas, Paul Brennan, Shou-Tung Chen, Ji-Yeob Choi, Mikael Hartman, Hidemi Ito, Artitaya Lophatananon, Keitaro Matsuo, Hui Miao, Kenneth Muir, Suleeporn Sangrajrang, Chen-Yang Shen, Soo H Teo, Chiu-Chen Tseng, Anna H Wu, Cheng Har Yip, Jacques Simard, Paul D P Pharoah, Per Hall, Daehee Kang, Yongbing Xiang, Douglas F Easton, Wei Zheng
BACKGROUND: Approximately 100 common breast cancer susceptibility alleles have been identified in genome-wide association studies (GWAS). The utility of these variants in breast cancer risk prediction models has not been evaluated adequately in women of Asian ancestry. METHODS: We evaluated 88 breast cancer risk variants that were identified previously by GWAS in 11,760 cases and 11,612 controls of Asian ancestry. SNPs confirmed to be associated with breast cancer risk in Asian women were used to construct a polygenic risk score (PRS)...
December 8, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27931239/mcl-1-inhibition-provides-a-new-way-to-suppress-breast-cancer-metastasis-and-increase-sensitivity-to-dasatinib
#18
Adelaide I J Young, Andrew M K Law, Lesley Castillo, Sabrina Chong, Hayley D Cullen, Martin Koehler, Sebastian Herzog, Tilman Brummer, Erinna F Lee, Walter D Fairlie, Morghan C Lucas, David Herrmann, Amr Allam, Paul Timpson, D Neil Watkins, Ewan K A Millar, Sandra A O'Toole, David Gallego-Ortega, Christopher J Ormandy, Samantha R Oakes
BACKGROUND: Metastatic disease is largely resistant to therapy and accounts for almost all cancer deaths. Myeloid cell leukemia-1 (MCL-1) is an important regulator of cell survival and chemo-resistance in a wide range of malignancies, and thus its inhibition may prove to be therapeutically useful. METHODS: To examine whether targeting MCL-1 may provide an effective treatment for breast cancer, we constructed inducible models of BIMs2A expression (a specific MCL-1 inhibitor) in MDA-MB-468 (MDA-MB-468-2A) and MDA-MB-231 (MDA-MB-231-2A) cells...
December 8, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27927249/the-af-1-deficient-estrogen-receptor-er%C3%AE-46-isoform-is-frequently-expressed-in-human-breast-tumors
#19
Elodie Chantalat, Frédéric Boudou, Henrik Laurell, Gaëlle Palierne, René Houtman, Diana Melchers, Philippe Rochaix, Thomas Filleron, Alexandre Stella, Odile Burlet-Schiltz, Anne Brouchet, Gilles Flouriot, Raphaël Métivier, Jean-François Arnal, Coralie Fontaine, Françoise Lenfant
BACKGROUND: To date, all studies conducted on breast cancer diagnosis have focused on the expression of the full-length 66-kDa estrogen receptor alpha (ERα66). However, much less attention has been paid to a shorter 46-kDa isoform (ERα46), devoid of the N-terminal region containing the transactivation function AF-1. Here, we investigated the expression levels of ERα46 in breast tumors in relation to tumor grade and size, and examined the mechanism of its generation and its specificities of coregulatory binding and its functional activities...
December 7, 2016: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/27923387/mammographic-texture-and-risk-of-breast-cancer-by-tumor-type-and-estrogen-receptor-status
#20
Serghei Malkov, John A Shepherd, Christopher G Scott, Rulla M Tamimi, Lin Ma, Kimberly A Bertrand, Fergus Couch, Matthew R Jensen, Amir P Mahmoudzadeh, Bo Fan, Aaron Norman, Kathleen R Brandt, V Shane Pankratz, Celine M Vachon, Karla Kerlikowske
BACKGROUND: Several studies have shown that mammographic texture features are associated with breast cancer risk independent of the contribution of breast density. Thus, texture features may provide novel information for risk stratification. We examined the association of a set of established texture features with breast cancer risk by tumor type and estrogen receptor (ER) status, accounting for breast density. METHODS: This study combines five case-control studies including 1171 breast cancer cases and 1659 controls matched for age, date of mammogram, and study...
December 6, 2016: Breast Cancer Research: BCR
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