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Comparative breast cancer

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https://www.readbyqxmd.com/read/28431393/loss-of-tpm4-1-leads-to-disruption-of-cell-cell-adhesions-and-invasive-behavior-in-breast-epithelial-cells-via-increased-rac1-signaling
#1
SukYeong Jeong, SunYoung Lim, Galina Schevzov, Peter W Gunning, David M Helfman
Here we report the identification and characterization of a novel high molecular weight isoform of tropomyosin, Tpm4.1, expressed from the human TPM4 gene. Tpm4.1 expression is down-regulated in a subset of breast cancer cells compared with untransformed MCF10A breast epithelial cells and in highly metastatic breast cancer cell lines derived from poorly metastatic MDA-MD-231 cells. In addition, patients with invasive ductal breast carcinoma show decreased TPM4 expression compared with patients with ductal breast carcinoma in situ, and low TPM4 expression is associated with poor prognosis...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430867/emerging-evidence-for-the-role-of-differential-tumor-microenvironment-in-breast-cancer-racial-disparity-a-closer-look-at-the-surroundings
#2
Sachin Kumar Deshmukh, Sanjeev K Srivastava, Nikhil Tyagi, Aamir Ahmad, Ajay P Singh, Ahmed Al Ghadhban, Donna L Dyess, James E Carter, Kari Dugger, Seema Singh
Although increased awareness leading to early detection and prevention, as well as advancements in treatment strategies, have resulted in superior clinical outcomes, African American women with breast cancer continue to have greater mortality rates, compared to Caucasian American counterparts. Moreover, African American women are more likely to have breast cancer at a younger age and be diagnosed with aggressive tumor sub-types. Such racial disparities can be attributed to socioeconomic differences, but it is increasingly being recognized that these disparities may indeed be due to certain genetic and other non-genetic biological differences...
April 18, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28430742/utility-of-single-photon-emission-tomography-computed-tomography-for-sentinel-lymph-node-localization-in-breast-cancer-patients
#3
Agnieszka Giżewska, Ewa Witkowska-Patena, Sebastian Osiecki, Andrzej Mazurek, Zofia Stembrowicz-Nowakowska, Mirosław Dziuk
OBJECTIVES: Sentinel lymph node (SLN) mapping is currently a routine technique in breast cancer management and preoperative scintigraphic imaging plays a crucial role in the process of SLN detection. The guidelines recommend performing planar acquisition and optional single-photon emission tomography/computed tomography (SPECT/CT) imaging. The aim of this study was to verify whether routine performing of SPECT/CT in addition to planar imaging increases the sensitivity of SLN detection in patients with early-stage breast cancer...
April 20, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28430705/disparities-in-female-breast-cancer-stage-at-diagnosis-in-new-jersey-a-spatial-temporal-analysis
#4
Lisa M Roche, Xiaoling Niu, Antoinette M Stroup, Kevin A Henry
BACKGROUND: Despite improvements in early detection of breast cancer, disparities persist in stage at diagnosis, which is an important prognostic factor. METHODS: We used the space-time scan statistic in SaTScan to identify geographic areas and time periods with significantly elevated proportions of female breast cancer diagnosed at the in situ or distant stage in New Jersey. The analyses were conducted with census tracts as the geographic unit of analysis, elliptical spatial windows, 3-year temporal windows, and Poisson models...
December 22, 2016: Journal of Public Health Management and Practice: JPHMP
https://www.readbyqxmd.com/read/28430555/beyond-wires-and-seeds-reflector-guided-breast-lesion-localization-and-excision
#5
Victoria L Mango, Ralph T Wynn, Sheldon Feldman, Lauren Friedlander, Elise Desperito, Sejal N Patel, Ameer Gomberawalla, Richard Ha
Purpose To evaluate outcomes of Savi Scout (Cianna Medical, Aliso Viejo, Calif) reflector-guided localization and excision of breast lesions by analyzing reflector placement, localization, and removal, along with target excision and rates of repeat excision (referred to as re-excision). Materials and Methods A single-institution retrospective review of 100 women who underwent breast lesion localization and excision by using the Savi Scout surgical guidance system from June 2015 to May 2016 was performed. By using image guidance 0-8 days before surgery, 123 nonradioactive, infrared-activated, electromagnetic wave reflectors were percutaneously inserted adjacent to or within 111 breast targets...
April 21, 2017: Radiology
https://www.readbyqxmd.com/read/28429898/subclassification-of-the-molecular-types-of-breast-cancer-based-on-the-expression-of-immunohistochemical-markers-and-evolution
#6
Aldo Reigosa, David Hardisson, Francisco Sanzi, Eduardo Caleiras, Felipe Saldivia, Angel Fernández
Breast carcinomas have been classified from the molecular point of view into four major groups (Luminal A, Luminal B, HER2 and triple negative). However, these groups are not homogeneous and there is a need to establish subcategories that can be identified by immunohistochemistry (IHC), to better predict prognosis and carry out treatments that are more effective. This study was conducted in 354 patients diagnosed with invasive ductal breast carci- noma. The expression of 22 molecules was analyzed by tissue matrices and the results obtained were compared with molecular classes defined by IHC, according to the expression of estrogen receptor (ER), progesterone receptor (PR) and HER2, and the overall survival...
June 2016: Investigación Clínica
https://www.readbyqxmd.com/read/28429764/fabrication-characterization-and-biological-evaluation-of-anti-her2-indocyanine-green-doxorubicin-encapsulated-peg-b-plga-copolymeric-nanoparticles-for-targeted-photochemotherapy-of-breast-cancer-cells
#7
Yu-Hsiang Lee, Da-Sheng Chang
In this study, we aimed to develop anti-human epidermal growth factor receptor 2 (HER2) indocyanine green (ICG)-doxorubicin (DOX)-encapsulated polyethylene glycol-poly(lactic-co-glycolic acid) diblock copolymeric nanoparticles (HIDPPNPs) to explore the co-administration of phototherapy and chemotherapy for HER2-overexpressing breast cancer, a highly aggressive and medicine-resistant breast carcinoma. The HIDPPNPs were fabricated using a solvent evaporation technique followed by carbodiimide-mediated antibody conjugation on the nanoparticle surface...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28429260/the-dietary-patterns-are-a-modifying-risk-factor-for-breast-cancer-an-ecological-study
#8
L A Radkevich, D A Radkevich
A comparative study of dietary patterns (DPs) with breast cancer (BC) incidence in different countries has been performed. It was established that in the countries with a high incidence of BC (76 per 100 000 people) the levels of consumption of the "nutrients of animal foods," "fruits and beverages," and "alcoholic drinks" are 1.5-2 times higher and that of "cereals and vegetables" is 1.5 times lower than in the countries with a low incidence of BC (35 per 100 000). In Mediterranean countries, where incidence of BC is 51 per 100 000, the levels of consumption of "animal foods" is two times lower than the levels of consumption of "cereals and vegetables...
January 2017: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://www.readbyqxmd.com/read/28429207/organizational-and-welfare-mode-of-breast-centers-network-a-survey-of-sicilian-radiologists
#9
Maria Adele Marino, Orazio Pennisi, Annalisa Donia, Carmelo Sofia, Claudio Guerra, Carmelo Privitera, Placido Romeo
The European Society of Breast Cancer Specialists has created quality indicators for breast units to establish the minimum standards of care for patients. In Italy, each region differs, indeed, in terms of health care and services warranted to patients suffering from breast cancer. Since Sicilian Regional Administration today is still disregarding implementation of the provisions contained in the proposal of the Ministry of Health entitled "Guidelines on Organizational and Health Care Methods of Breast Centers Network" in November 2015 the Sicilian Regional Group of the Italian Society of Radiology (SIRM) decided to carry out a survey to see the position of the Sicilian Healthcare System and define the gap to bridge over...
April 20, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28428649/role-of-magnetic-resonance-imaging-in-the-planning-of-breast-cancer-treatment-strategies-comparison-with-conventional-imaging-techniques
#10
Luciana Karla Lira França, Almir Galvão Vieira Bitencourt, Hugo Lamartine Souza Paiva, Caroline Baptista Silva, Nara Pacheco Pereira, Jociana Paludo, Luciana Graziano, Camila Souza Guatelli, Juliana Alves de Souza, Elvira Ferreira Marques
OBJECTIVE: To assess the role of magnetic resonance imaging (MRI) in the planning of breast cancer treatment strategies. MATERIALS AND METHODS: The study included 160 women diagnosed with breast cancer, who underwent breast MRI for preoperative staging. Using Pearson's correlation coefficient (r), we compared the size of the primary tumor, as determined by MRI, by conventional imaging (mammography and ultrasound), and in the pathological examination (gold standard)...
March 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/28428557/the-prognostic-significance-of-cdc6-and-cdt1-in-breast-cancer
#11
Ravikiran Mahadevappa, Henrique Neves, Shun Ming Yuen, Yuchen Bai, Cian M McCrudden, Hiu Fung Yuen, Qing Wen, Shu Dong Zhang, Hang Fai Kwok
DNA replication is a critical step in cell proliferation. Overexpression of MCM2-7 genes correlated with poor prognosis in breast cancer patients. However, the roles of Cdc6 and Cdt1, which work with MCMs to regulate DNA replication, in breast cancers are largely unknown. In the present study, we have shown that the expression levels of Cdc6 and Cdt1 were both significantly correlated with an increasing number of MCM2-7 genes overexpression. Both Cdc6 and Cdt1, when expressed in a high level, alone or in combination, were significantly associated with poorer survival in the breast cancer patient cohort (n = 1441)...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28428285/characterisation-of-gata3-expression-in-invasive-breast-cancer-differences-in-histological-subtypes-and-immunohistochemically-defined-molecular-subtypes
#12
Tang Shaoxian, Yu Baohua, Xu Xiaoli, Cheng Yufan, Tu Xiaoyu, Lu Hongfen, Bi Rui, Sun Xiangjie, Shui Ruohong, Yang Wentao
AIMS: GATA-binding protein 3 (GATA3) is a sensitive and relatively specific marker in breast and urothelial carcinomas. Its diagnostic utility in primary and metastatic breast cancers has been explored and confirmed. However, the relationship between GATA3 expression and different breast carcinoma intrinsic subtypes has not been specifically defined in the literature despite a few reports with a small number of cases. The aim of the current investigation is to clarify GATA3 expression among different histological subtypes and surrogate molecular breast carcinoma subtypes in a large series of cases...
April 20, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28428107/clinicopathologic-factors-associated-with-survival-in-patients-with-breast-cancer-brain-metastasis
#13
Rong Li, Kui Zhang, Gene P Siegal, Shi Wei
Brain metastasis from breast cancer generally represents a catastrophic event yet demonstrates substantial biological heterogeneity. There have been limited studies solely focusing on the prognosis of patients with such metastasis. In this study, we carried out a comprehensive analysis in 108 consecutive patients with breast cancer brain metastases between 1997 and 2012 to further define clinicopathologic factors associated with early onset of brain metastasis and survival outcomes after development of them...
April 17, 2017: Human Pathology
https://www.readbyqxmd.com/read/28428026/dietary-cyanidin-3-glucoside-from-purple-corn-ameliorates-doxorubicin-induced-cardiotoxicity-in-mice
#14
K Petroni, M Trinei, M Fornari, V Calvenzani, A Marinelli, L A Micheli, R Pilu, A Matros, H-P Mock, C Tonelli, M Giorgio
BACKGROUND AND AIMS: Anthracyclines are effective anticancer drugs that have improved prognosis of hundred thousand cancer patients worldwide and are currently the most common chemotherapeutic agents used for the treatment of blood, breast, ovarian and lung cancers. However, their use is limited because of a cumulative dose-dependent and irreversible cardiotoxicity that can cause progressive cardiomyopathy and congestive heart failure. Aim of the present study was to determine the cardioprotective activity of a dietary source of cyanidin 3-glucoside (C3G), such as purple corn, against doxorubicin (DOX)-induced cardiotoxicity in mice...
February 21, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28427809/picrasidine-g-decreases-viability-of-mda-mb-468-egfr-overexpressing-triple-negative-breast-cancer-cells-through-inhibition-of-egfr-stat3-signaling-pathway
#15
Naoya Yamashita, Manami Kondo, Shuai Zhao, Wei Li, Kazuo Koike, Kiyomitsu Nemoto, Yuichiro Kanno
Targeted therapy is unavailable for treating patients with triple-negative breast cancer (TNBC), which accounts for approximately 15% of all breast cancers. Overexpression of epidermal growth factor receptor (EGFR) is observed in approximately 30-60% of TNBCs. Therefore, developing novel strategies for inhibiting EGFR signaling is required. In the present study, a natural compound library was screened to identify molecules that target TNBCs that overexpress EGFR. Picrasidine G (PG), a naturally occurring dimeric alkaloid produced by Picrasma quassioides, decreased the viability of the MDA-MB 468 cell line (TNBC(EGFR+)) compared with other breast cancer cell lines...
March 23, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28427429/vitamin-d-receptor-retinoid-x-receptor-and-peroxisome-proliferator-activated-receptor-%C3%AE-are-overexpressed-in-brca1-mutated-breast-cancer-and-predict-prognosis
#16
Sabine Heublein, Doris Mayr, Alfons Meindl, Alexandra Kircher, Udo Jeschke, Nina Ditsch
BACKGROUND: BRCA1 mutated breast cancers are commonly diagnosed as negative for classical hormone receptors i.e. estrogen receptor, progesterone receptor and/or Her2. Due to these common targets being absent the application of anti-endocrine therapies is rather limited and a certain focus has been set on discovering alternative target molecules. We recently highlighted thyroid hormone receptors (TRs) to predict prognosis in breast cancer patients that had been diagnosed a BRCA1 germline mutation...
April 20, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28427271/the-value-of-pre-and-post-neoadjuvant-chemotherapy-f-18-fdg-pet-ct-scans-in-breast-cancer-comparison-with-mri
#17
Eun Kyoung Choi, Ie Ryung Yoo, Sung Hun Kim, Sonya Youngju Park, Joo Hyun O, Bong Joo Kang
Background Accurate assessment of neoadjuvant chemotherapy (NAC) response with positron emission tomography/computed tomography (PET/CT) or magnetic resonance imaging (MRI) may provide appropriate operation guidelines for individual breast cancer patients. Purpose To compare the values of PET/CT and MRI for response evaluation following NAC in breast cancer patients. Material and Methods Thirty-three consecutive patients who underwent NAC were included. PET/CT and MRI were performed before and one to four weeks after NAC...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28427212/high-myc-expression-and-transcription-activity-underlies-intra-tumoral-heterogeneity-in-triple-negative-breast-cancer
#18
Nidhi Gupta, Karen Jung, Chengsheng Wu, Abdulraheem Alshareef, Hind Alqahtani, Sambasivarao Damaraju, John R Mackey, Sunita Ghosh, Siham Sabri, Bassam S Abdulkarim, Gilbert Bigras, Raymond Lai
We have previously identified a novel intra-tumoral dichotomy in triple-negative breast cancer (TNBC) based on the differential responsiveness to a reporter containing the Sox2 regulatory region-2 (SRR2), with reporter responsive (RR) cells being more stem-like than reporter unresponsive (RU) cells. Using bioinformatics, we profiled the protein-DNA binding motifs of SRR2 and identified Myc as one of the potential transcription factors driving SRR2 activity. In support of its role, Myc was found to be highly expressed in RR cells as compared to RU cells...
March 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28427196/breast-cancer-subtypes-predict-the-preferential-site-of-distant-metastases-a-seer-based-study
#19
Qi Wu, Juanjuan Li, Shan Zhu, Juan Wu, Chuang Chen, Qian Liu, Wen Wei, Yimin Zhang, Shengrong Sun
BACKGROUND AND AIMS: This study aimed to access possible relationships between breast cancer subtypes and sites of distant metastasis in breast cancer. RESULTS: A total of 243,896 patients, including 226,451 cases in control groups were identified. Bone metastasis was found in 8848 cases, compared with 1,000 brain metastasis cases, 3434 liver metastasis cases and 4167 lung metastasis cases. Patients with all subtypes were most prone to bone metastases, the incidence of bone metastasis in HR+/HER2+ subtype was up to 5...
March 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28427146/microrna-200c-141-upregulates-serpinb2-to-promote-breast-cancer-cell-metastasis-and-reduce-patient-survival
#20
Tiefeng Jin, Hoe Suk Kim, Sul Ki Choi, Eun Hye Hwang, Jisu Woo, Han Suk Ryu, Kwangsoo Kim, Aree Moon, Woo Kyung Moon
The microRNA-200 (miR-200) family is associated with tumor metastasis and poor patient prognosis. We found that miR-200c/141 cluster overexpression upregulated SerpinB2 in the MDA-MB-231 triple-negative (TN) breast cancer cell line. We observed transcription factor (c-Jun, c-Fos, and FosB) upregulation, nuclear localization of c-Jun, and increased SerpinB2 promoter-directed chloramphenicol acetyltransferase activity in miR-200c/141 cluster-overexpressing cells relative to controls. Additionally, miR-124a and miR-26b, which directly target SepinB2, were downregulated compared to controls...
February 24, 2017: Oncotarget
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