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breast cancer progesterone

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https://www.readbyqxmd.com/read/29031688/vitamin-d-deficiency-is-associated-with-poor-breast-cancer-prognostic-features-in-postmenopausal-women
#1
Benedito de Sousa Almeida-Filho, Heloisa De Luca Vespoli, Eduardo Carvalho Pessoa, Murilo Machado, Jorge Nahas-Neto, Eliana Aguiar Petri Nahas
This study aimed to evaluate the association between pretreatment vitamin D (VD) deficiency with breast cancer prognostic features in Brazilian postmenopausal women. An analytical cross sectional study was conducted with 192 women, aged 45-75 years, attended at University Hospital. Women with recent diagnosis of breast cancer, in amenorrhea >12months and age ≥45 years, without medication use or clinical conditions that interfere with VD values were included. Clinical and anthropometric data were collected...
October 11, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29029640/breast-carcinomas-with-low-amplified-equivocal-her2-by-ish-potential-supporting-role-of-multiplex-ligation-dependent-probe-amplification
#2
Cristiana Ercolani, Caterina Marchiò, Anna Di Benedetto, Alessandra Fabi, Letizia Perracchio, Patrizia Vici, Francesca Sperati, Simonetta Buglioni, Vincenzo Arena, Edoardo Pescarmona, Anna Sapino, Irene Terrenato, Marcella Mottolese
BACKGROUND: This is a retrospective cross sectional study aimed to verify whether Multiplex Ligation-dependent Probe Amplification (MLPA), a quantitative molecular assay, may represent a valuable reflex test in breast cancer with equivocal HER2 expression by immunohistochemistry and HER2 gene signals/nucleus (s/n) ranging between 4.0 and 5.9 by in situ hybridization. METHODS: A series of 170 breast carcinomas scored as 2+ for HER2 expression by immunohistochemistry, were selected from our files and analyzed in parallel by silver in situ hybridization and by MLPA...
October 13, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29022488/characterization-of-immortalized-human-mammary-epithelial-cell-line-hmec-2-6
#3
Pooja S Joshi, Vishnu Modur, JiMing Cheng, Kathy Robinson, Krishna Rao
Primary human mammary epithelial cells have a limited life span which makes it difficult to study them in vitro for most purposes. To overcome this problem, we have developed a cell line that was immortalized using defined genetic elements, and we have characterized this immortalized non-tumorigenic human mammary epithelial cell line to establish it as a potential model system. human mammary epithelial cells were obtained from a healthy individual undergoing reduction mammoplasty at SIU School of Medicine. The cells were transduced with CDK4R24C followed by transduction with human telomerase reverse transcriptase...
October 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/29019571/prognostic-factors-and-overall-survival-of-breast-cancer-in-the-city-of-goiania-brazil-a-population-based-study
#4
Ruffo de Freitas, Rodrigo Disconzi Nunes, Edesio Martins, Maria Paula Curado, Nilceana Maya Aires Freitas, Leonardo Ribeiro Soares, José Carlos Oliveira
OBJECTIVE: to analyze the overall survival and prognostic factors of women with breast cancer in the city of Goiânia. METHODS: this is a retrospective, cross-sectional, observational study that included women with malignant neoplasms of the breast identified by the Goiânia Population-based Cancer Registry. The variables studied were age at diagnosis, tumor size, staging, axillary lymph node involvement, tumor grade, disease extent, hormone receptors, and c-erb-B2 oncoprotein...
September 2017: Revista do Colégio Brasileiro de Cirurgiões
https://www.readbyqxmd.com/read/29019543/predictive-factors-of-axillary-metastasis-in-patients-with-breast-cancer-and-positive-sentinel-lymph-node-biopsy
#5
Olívio Feitosa Costa, Rafael Bustamante Castro, Cibele Vasconcelos Oliveira, Thais Vieira Nogueira Feitosa, Josualdo Justino Alves, Francisco Pimentel Cavalcante, Marcos Venício Alves Lima
OBJECTIVE: to evaluate the risk factors for the presence of non-sentinel axillary metastatic disease in patients with breast cancer and positive sentinel node biopsy. Methods: retrospective cross-sectional study of women with breast cancer operated at the Cancer Institute of Ceará between 2002 and 2012 and submitted to sentinel lymph node biopsy. RESULTS: Among 946 breast cancer patients, 331 underwent sentinel lymph node biopsy, which was positive in 83. These patients underwent axillary lymphadenectomy and 39 (46%) had metastases in other axillary lymph nodes...
July 2017: Revista do Colégio Brasileiro de Cirurgiões
https://www.readbyqxmd.com/read/29018573/how-many-diseases-is-triple-negative-breast-cancer-the-protagonism-of-the-immune-microenvironment
#6
REVIEW
Diana P Saraiva, M Guadalupe Cabral, António Jacinto, Sofia Braga
Triple negative breast cancer (TNBC) is a type of breast cancer (BC) that does not express the oestrogen and the progesterone receptors and the human epidermal growth factor receptor type 2 (HER2). Since there are no positive markers to reliably classify TNBC, these tumours are not yet treated with targeted therapies. Perhaps for this reason they are the most aggressive form of breast carcinomas. However, the clinical observation that these patients do not carry a uniformly dismal prognosis, coupled with data coming from pathology and epidemiology, suggests that this negative definition is not capturing a single clinical entity, but several...
2017: ESMO Open
https://www.readbyqxmd.com/read/29016671/prognostic-and-clinicopathological-value-of-twist-expression-in-breast-cancer-a-meta-analysis
#7
Weiqiang Qiao, Zhiqiang Jia, Heyang Liu, Qipeng Liu, Ting Zhang, Wanying Guo, Peng Li, Miao Deng, Sanqiang Li
BACKGROUND: Despite initial indications that the transcription factor Twist could be used as a breast cancer prognostic marker, there still exists some controversy about its reliability. Thus, the aim of the present study was to assess the relationship between Twist expression and prognosis in breast carcinoma. MATERIALS AND METHODS: We identified eligible studies that reported an association between Twist expression and breast cancer prognosis by searching the literature in PubMed, Embase, the Cochrane Library, and Web of Science databases, through June 5, 2017...
2017: PloS One
https://www.readbyqxmd.com/read/28989584/expression-analysis-of-long-non-coding-pcat-1in-breast-cancer
#8
Shaghayegh Sarrafzadeh, Lobat Geranpayeh, Soudeh Ghafouri-Fard
Background: The prostate cancer-associated non-coding RNA transcript 1 (PCAT-1) is a newly identified long non- coding RNA whose participation in tumorigenesis of a variety of cancers has been observed. In the present study, we aimed at analysis of its expression in breast cancer patients. Materials and Methods: The expression of PCAT-1 was assessed using real-time reverse transcription polymerase chain reaction in tumor samples obtained from 47newly diagnosed breast cancer patients as well as their corresponding adjacent non-cancerous tissues (ANCTs)...
July 1, 2017: International Journal of Hematology-oncology and Stem Cell Research
https://www.readbyqxmd.com/read/28986743/monosomy-17-in-potentially-curable-her2-amplified-breast-cancer-prognostic-and-predictive-impact
#9
David B Page, Hannah Wen, Edi Brogi, Dana Dure, Dara Ross, Kateri J Spinelli, Sujata Patil, Larry Norton, Clifford Hudis, Heather L McArthur
PURPOSE: HER2 copy number by fluorescence in situ hybridization (FISH) is typically reported relative to the centromere enumeration probe 17 (CEP17). HER2/CEP17 ratio could be impacted by alterations in the number of chromosome 17 copies. Monosomy of chromosome 17 (m17) is found in ~ 1900 cases of early-stage HER2-positive breast cancer annually in the United States; however, the efficacy of HER2-directed trastuzumab therapy in these patients is not well characterized. Here, we retrospectively identified HER2-amplified, stage I-III breast cancers with m17 and characterized the impact of trastuzumab treatment...
October 6, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28984771/application-of-neoadjuvant-chemotherapy-in-occult-breast-cancer-five-case-reports
#10
Haisong Yang, Ling Li, Mengmeng Zhang, Shiyong Zhang, Shu Xu, Xiaoxia Ma
RATIONALE: Although rare, occult breast cancer (OBC) originates from breast tissue. Its primary lesions cannot be identified by clinical examination or imaging; therefore, the diagnosis, treatment, and prognosis remain controversial. PATIENT CONCERNS: This study comprised 5 female OBC patients who were admitted to the Affiliated Hospital of Guizhou Medical University for painless axillary lumps. DIAGNOSES: F-flurodeoxyglucose (F-FDG) positron emission tomography/computed tomography (PET/CT) indicated metastasis in the ipsilateral axillary lymph nodes...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28982861/liver-x-receptor-lxr-regulated-genes-of-cholesterol-trafficking-and-breast-cancer-severity
#11
COMPARATIVE STUDY
Christine Bobin-Dubigeon, Anaïs Chauvin, Victoire Brillaud-Meflah, Florence Boiffard, Marie-Pierre Joalland, Jean-Marie Bard
BACKGROUND: Liver X receptor [LXR; nuclear receptor subfamily 1, group H, member 2 (NR1H2, alias LXRB)] can inhibit proliferation and induce apoptosis of cancer cells. Its relationship with disease severity is not known. MATERIALS AND METHODS: Expression of LXRB, ATP binding cassette subfamily A member 1 (ABCA1), ATP binding cassette subfamily G member 1 (ABCG1), apolipoprotein E (APOE) and paraoxonase 2 (PON2) were determined in 69 breast tumors and were related to clinical stages of the disease and tumor characteristics, as well as time to recurrence...
October 2017: Anticancer Research
https://www.readbyqxmd.com/read/28979927/breast-cancer-risk-factors-in-relation-to-estrogen-receptor-progesterone-receptor-insulin-like-growth-factor-1-receptor-and-ki67-expression-in-normal-breast-tissue
#12
Hannah Oh, A Heather Eliassen, Andrew H Beck, Bernard Rosner, Stuart J Schnitt, Laura C Collins, James L Connolly, Laleh Montaser-Kouhsari, Walter C Willett, Rulla M Tamimi
Studies have suggested that hormone receptor and Ki67 expression in normal breast tissue are associated with subsequent breast cancer risk. We examined the associations of breast cancer risk factors with estrogen receptor (ER), progesterone receptor (PR), insulin-like growth factor-1 receptor (IGF-1R), and Ki67 expression in normal breast tissue. This analysis included 388 women with benign breast disease (ages 17-67 years) in the Nurses' Health Studies. Immunohistochemical staining was performed on tissue microarrays constructed from benign biopsies containing normal breast epithelium and scored as the percentage of epithelial cells that were positively stained...
2017: NPJ Breast Cancer
https://www.readbyqxmd.com/read/28978097/human-her2-overexpressing-mouse-breast-cancer-cell-lines-derived-from-mmtv-f-huher2-mice-characterization-and-use-in-a-model-of-metastatic-breast-cancer
#13
Sunju Park, Jessie R Nedrow, Anders Josefsson, George Sgouros
Preclinical evaluation of therapeutic agents against metastatic breast cancer require cell lines and animal models that recapitulate clinical metastatic breast cancer as much as possible. We have previously used cell lines derived from the neu-N transgenic model to investigate anti-neu targeting of metastatic breast cancer using an alpha-emitter labeled antibody reactive with the rat variant of HER2/neu expressed by the neu-N model. To investigate alpha-particle emitter targeting of metastatic breast cancer using clinically relevant, commercially available anti-HER2/neu antibodies, we have developed cell lines derived from primary tumors and lung metastases from HuHER2 transgenic mice...
September 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28977883/targeted-exome-sequencing-of-korean-triple-negative-breast-cancer-reveals-homozygous-deletions-associated-with-poor-prognosis-of-adjuvant-chemotherapy-treated-patients
#14
Hae Min Jeong, Ryong Nam Kim, Mi Jeong Kwon, Ensel Oh, Jinil Han, Se Kyung Lee, Jong-Sun Choi, Sara Park, Seok Jin Nam, Gyung Yup Gong, Jin Wu Nam, Doo Ho Choi, Hannah Lee, Byung-Ho Nam, Yoon-La Choi, Young Kee Shin
Triple-negative breast cancer is characterized by the absence of estrogen and progesterone receptors and human epidermal growth factor receptor 2, and is associated with a poorer outcome than other subtypes of breast cancer. Moreover, there are no accurate prognostic genes or effective therapeutic targets, thereby necessitating continued intensive investigation. This study analyzed the genetic mutation landscape in 70 patients with triple-negative breast cancer by targeted exome sequencing of tumor and matched normal samples...
September 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28977854/clinically-relevant-morphological-structures-in-breast-cancer-represent-transcriptionally-distinct-tumor-cell-populations-with-varied-degrees-of-epithelial-mesenchymal-transition-and-cd44-cd24-stemness
#15
Evgeny V Denisov, Nikolay A Skryabin, Tatiana S Gerashchenko, Lubov A Tashireva, Jochen Wilhelm, Mikhail A Buldakov, Aleksei A Sleptcov, Igor N Lebedev, Sergey V Vtorushin, Marina V Zavyalova, Nadezhda V Cherdyntseva, Vladimir M Perelmuter
Intratumor morphological heterogeneity in breast cancer is represented by different morphological structures (tubular, alveolar, solid, trabecular, and discrete) and contributes to poor prognosis; however, the mechanisms involved remain unclear. In this study, we performed 3D imaging, laser microdissection-assisted array comparative genomic hybridization and gene expression microarray analysis of different morphological structures and examined their association with the standard immunohistochemistry scorings and CD44(+)CD24(-) cancer stem cells...
September 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28977081/assessment-of-her-2-status-in-invasive-breast-cancer-in-brazil
#16
Victor Eduardo Arrua Arias, Helenice Gobbi, Sérgio Ossamu Ioshii, Cristovam Scapulatempo, Alexandre Rolim da Paz, Vinicius Duval da Silva, Diego Uchôa, Claudio Zettler, Fernando Augusto Soares
OBJECTIVE: To characterize the frequency of HER-2-positive breast cancer in Brazil. METHOD: In this prospective observational study, we first ascertained the HER-2 status of invasive breast cancer specimens by automated immunohistochemistry (IHC). For specimens classified as 2+ by IHC, we performed in situ hybridization (ISH). RESULTS: From February, 2011 to December, 2012, 1,495 breast specimens were registered, and 1,310 samples collected at 24 centers were analyzed...
July 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28975433/discrepancies-between-biomarkers-of-primary-breast-cancer-and-subsequent-brain-metastases-an-international-multicenter-study
#17
O Kaidar-Person, I Meattini, P Jain, P Bult, N Simone, I Kindts, R Steffens, C Weltens, P Navarria, Y Belkacemi, J Lopez-Guerra, L Livi, B G Baumert, B Vieites, D Limon, N Kurman, K Ko, J B Yu, V Chiang, P Poortmans, T Zagar
PURPOSE: Discordances between the estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2), expression between primary breast tumors and their subsequent brain metastases (BM) were investigated in breast cancer patients. METHODS: We collected retrospective data from 11 institutions in 8 countries in a predefined-standardized format. Receptor status (positive or negative) was determined according to institutional guidelines (immunohistochemically and/or fluorescence in situ hybridization)...
October 3, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28973704/neoadjuvant-and-adjuvant-therapies-for-breast-cancer
#18
REVIEW
Susmitha Apuri
Breast cancer remains the most common cancer in women in the United States, the second most common cause of cancer death, and the main cause of death in women ages 45 to 55 years. Molecular analyses have shown that breast cancer is divided into several subtypes (luminal A, luminal B, human epidermal growth factor receptor 2 [HER2] enriched, and basal-like), based on microarray techniques. Patients diagnosed as having breast cancer may undergo adjuvant or neoadjuvant chemotherapy, depending on the tumor size, hormone receptor, HER2/neu status, and desire for breast preservation...
October 2017: Southern Medical Journal
https://www.readbyqxmd.com/read/28970856/comparison-of-core-needle-biopsy-and-surgical-specimens-in-determining-intrinsic-biological-subtypes-of-breast-cancer-with-immunohistochemistry
#19
Kiho You, Sungmin Park, Jai Min Ryu, Isaac Kim, Se Kyung Lee, Jonghan Yu, Seok Won Kim, Seok Jin Nam, Jeong Eon Lee
PURPOSE: We evaluated the concordance between core needle biopsy (CNB) and surgical specimens on examining intrinsic biological subtypes and receptor status, and determined the accuracy of CNB as a basic diagnostic method. METHODS: We analyzed breast cancer patients with paired CNB and surgical specimen samples during 2014. We used monoclonal antibodies for nuclear staining, and estrogen receptor (ER) and progesterone receptor (PR) status evaluation. A positive test was defined as staining greater than or equal to 1% of tumor cells...
September 2017: Journal of Breast Cancer
https://www.readbyqxmd.com/read/28970855/nanostring-ncounter%C3%A2-approach-in-breast-cancer-a-comparative-analysis-with-quantitative-real-time-polymerase-chain-reaction-in-situ-hybridization-and-immunohistochemistry
#20
Jiyeon Hyeon, Soo Youn Cho, Min Eui Hong, So Young Kang, Ingu Do, Young Hyuck Im, Eun Yoon Cho
PURPOSE: Accurate testing for estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2) is essential for breast cancer treatment. At present, immunohistochemistry (IHC)/florescence in situ hybridization (FISH) are widely accepted as the standard testing methods. To investigate the value of NanoString nCounter®, we performed its comparative analysis with IHC/FISH and real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) for the assessment of ER, PR, and HER2...
September 2017: Journal of Breast Cancer
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