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https://www.readbyqxmd.com/read/29453318/integration-of-distinct-shca-signaling-complexes-promotes-breast-tumor-growth-and-tyrosine-kinase-inhibitor-resistance
#1
Jacqueline R Ha, Ryuhjin Ahn, Harvey W Smith, Valerie Sabourin, Steven Hėbert, Eduardo Cepeda Cañedo, Young Kyuen Im, Claudia Kleinman, William J Muller, Josie Ursini-Siegel
The commonality between most phospho-tyrosine signaling networks is their shared use of adaptor proteins to transduce mitogenic signals. ShcA (SHC1) is one such adaptor protein that employs two phospho-tyrosine binding domains (PTB and SH2) and key phospho-tyrosine residues to promote mammary tumorigenesis. Receptor tyrosine kinases (RTKs), such as ErbB2, engage the ShcA PTB domain to promote breast tumorigenesis by engaging Grb2 downstream of the ShcA tyrosine phosphorylation sites to activate AKT/mTOR signaling...
February 16, 2018: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29453232/a-randomized-multicenter-phase-ii-study-of-docosahexaenoic-acid-in-patients-with-a-history-of-breast-cancer-premalignant-lesions-or-benign-breast-disease
#2
Ayca Gucalp, Xi K Zhou, Elise D Cook, Judy E Garber, Katherine D Crew, Julie R Nangia, Priya Bhardwaj, Dilip D Giri, Olivier Elemento, Akanksha Verma, Hanhan Wang, J Jack Lee, Lana A Vornik, Carrie Mays, Diane Weber, Valerie Sepeda, Holly O'Kane, Margaret Krasne, Samantha Williams, Patrick G Morris, Brandy M Heckman-Stoddard, Barbara K Dunn, Clifford A Hudis, Powel H Brown, Andrew J Dannenberg
Obesity, a cause of subclinical inflammation, is a risk factor for the development of postmenopausal breast cancer (BC) and is associated with poorer cancer outcomes. Docosahexaenoic acid (DHA), an omega-3 fatty acid, possesses anti-inflammatory properties. We hypothesized that treatment with DHA would reduce the expression of proinflammatory genes and aromatase, the rate-limiting enzyme for estrogen biosynthesis, in benign breast tissue of overweight/obese women. A randomized, placebo-controlled, double-blind phase II study of DHA given for 12 weeks to overweight/obese women with a history of stage I-III BC, DCIS/LCIS, Paget's disease, or proliferative benign breast disease was carried out...
February 16, 2018: Cancer Prevention Research
https://www.readbyqxmd.com/read/29450827/progression-free-survival-results-in-postmenopausal-asian-women-subgroup-analysis-from-a-phase-iii-randomized-trial-of-fulvestrant-500-mg-vs-anastrozole-1-mg-for-hormone-receptor-positive-advanced-breast-cancer-falcon
#3
Shinzaburo Noguchi, Matthew J Ellis, John F R Robertson, Jackie Thirlwell, Mehdi Fazal, Zhimin Shao
BACKGROUND: The international, phase III FALCON study (NCT01602380) in postmenopausal patients with hormone receptor-positive, locally advanced/metastatic breast cancer (LA/MBC) who had not received prior endocrine therapy, demonstrated statistically significant improvement in progression-free survival (PFS) for patients who received fulvestrant 500 mg vs anastrozole 1 mg. This subgroup analysis evaluated PFS in Asian (randomized in China, Japan, or Taiwan) and non-Asian patients from the FALCON study...
February 15, 2018: Breast Cancer: the Journal of the Japanese Breast Cancer Society
https://www.readbyqxmd.com/read/29450494/comparison-of-the-performance-of-6-prognostic-signatures-for-estrogen-receptor-positive-breast-cancer-a-secondary-analysis-of-a-randomized-clinical-trial
#4
Ivana Sestak, Richard Buus, Jack Cuzick, Peter Dubsky, Ralf Kronenwett, Carsten Denkert, Sean Ferree, Dennis Sgroi, Catherine Schnabel, Frederick L Baehner, Elizabeth Mallon, Mitch Dowsett
Importance: Multiple molecular signatures are available for managing estrogen receptor (ER)-positive breast cancer but with little direct comparative information to guide the patient's choice. Objective: To conduct a within-patient comparison of the prognostic value of 6 multigene signatures in women with early ER-positive breast cancer who received endocrine therapy for 5 years. Design, Setting, and Participants: This retrospective biomarker analysis included 774 postmenopausal women with ER-positive ERBB2 (formerly HER2)-negative breast cancer...
February 15, 2018: JAMA Oncology
https://www.readbyqxmd.com/read/29447078/effects-of-peutz-jeghers-syndrome-pjs-causing-missense-mutations-l67p-l182p-g242v-and-r297s-on-the-structural-dynamics-of-lkb1-liver-kinase-b1-protein
#5
Ikrormi Rungsung, Amutha Ramaswamy
The Liver kinase B1 (LKB1) is encoded by LKB1 gene. Several pathogenic mutations of LKB1 causing Peutz-Jeghers syndrome (PJS) and also cancers in breast, gastric, pancreas and colon have been reported. The present study is focused to analyze the effects on the structural dynamics of LKB1 caused by the 4 pathogenic missense mutations (L67P, L182P, G242V and R297S), which are reported to reduce the catalytic activity. In this study, the structural changes of LKB1 in apo- and in heterotrimeric complex (LKB1-STRADα-MO25α) form with wild and mutated LKB1 are investigated using all atomistic molecular dynamic simulation...
February 15, 2018: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/29445928/efficacy-and-safety-of-trastuzumab-lapatinib-and-paclitaxel-neoadjuvant-treatment-with-or-without-prolonged-exposure-to-anti-her2-therapy-and-with-or-without-hormone-therapy-for-her2-positive-primary-breast-cancer-a-randomised-five-arm-multicentre-open-label
#6
N Masuda, M Toi, N Yamamoto, H Iwata, K Kuroi, H Bando, S Ohtani, T Takano, K Inoue, Y Yanagita, H Kasai, S Morita, T Sakurai, S Ohno
BACKGROUND: Dual blockade of HER2 promises increased pathological complete response (pCR) rate compared with single blockade in the presence of chemotherapy for HER2-positive (+) primary breast cancer. Many questions remain regarding optimal duration of treatment and combination impact of endocrine therapy for luminal HER2 disease. METHODS: We designed a randomised phase II, five-arm study to evaluate the efficacy and safety of lapatinib and trastuzumab (6 weeks) followed by lapatinib and trastuzumab plus weekly paclitaxel (12 weeks) with/without prolongation of anti-HER2 therapy prior to chemotherapy (18 vs...
February 14, 2018: Breast Cancer: the Journal of the Japanese Breast Cancer Society
https://www.readbyqxmd.com/read/29440160/interventions-to-increase-access-to-or-uptake-of-physical-health-screening-in-people-with-severe-mental-illness-a-realist-review
#7
Frédérique Lamontagne-Godwin, Caroline Burgess, Sarah Clement, Melanie Gasston-Hales, Carolynn Greene, Anne Manyande, Deborah Taylor, Paul Walters, Elizabeth Barley
OBJECTIVES: To identify and evaluate interventions aimed at increasing uptake of, or access to, physical health screening by adults with severe mental illness; to examine why interventions might work. DESIGN: Realist review. SETTING: Primary, secondary and tertiary care. RESULTS: A systematic search identified 1448 studies, of which 22 met the inclusion criteria. Studies were from Australia (n=3), Canada (n=1), Hong Kong (n=1), UK (n=11) and USA (n=6)...
February 10, 2018: BMJ Open
https://www.readbyqxmd.com/read/29439772/stomatitis-associated-with-mammalian-target-of-rapamycin-inhibition-a-review-of-pathogenesis-prevention-treatment-and-clinical-implications-for-oral-practice-in-metastatic-breast-cancer
#8
Mark S Chambers, Hope S Rugo, Jennifer K Litton, Timothy F Meiller
BACKGROUND: Patients with metastatic breast cancer may develop oral morbidities that result from therapeutic interventions. Mammalian target of rapamycin (mTOR) inhibitor-associated stomatitis (mIAS) is a common adverse event (AE), secondary to mTOR inhibitor therapy, that can have a negative impact on treatment adherence, quality of life, and health care costs. A multidisciplinary team approach is important to minimize mIAS and to maximize treatment benefits to patients with breast cancer...
February 10, 2018: Journal of the American Dental Association
https://www.readbyqxmd.com/read/29435983/epigenetic-dysregulation-of-key-developmental-genes-in-radiation-induced-rat-mammary-carcinomas
#9
Kazuhiro Daino, Mayumi Nishimura, Tatsuhiko Imaoka, Masaru Takabatake, Takamitsu Morioka, Yukiko Nishimura, Yoshiya Shimada, Shizuko Kakinuma
With the increase in the number of long-term cancer survivors worldwide, there is a growing concern about the risk of secondary cancers induced by radiotherapy. Epigenetic modifications of genes associated with carcinogenesis are attractive targets for the prevention of cancer owing to their reversible nature. To identify genes with possible changes in functionally relevant DNA methylation patterns in mammary carcinomas induced by radiation exposure, we performed microarray-based global DNA methylation and expression profiling in γ-ray-induced rat mammary carcinomas and normal mammary glands...
February 13, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29435821/7-8-dihydroxycoumarin-exerts-antitumor-potential-on-dmba-induced-mammary-carcinogenesis-by-inhibiting-er%C3%AE-pr-egfr-and-igf1r-involvement-of-mapk1-2-jnk1-2-akt-pathway
#10
Abhishek Kumar, Priyashree Sunita, Shivesh Jha, Shakti P Pattanayak
Breast cancer (BC) is a persistent and impulsive metabolic disorder with the highest prevalence in women, worldwide. 7,12-Dimethylbenz(a)anthracene (DMBA) is a potent polyaromatic hydrocarbon (PAH)-based carcinogen producing mammary carcinomas in rats resembling the human hormone-dependent BC. 7,8-Dihydroxycoumarin (78DC) is a coumarin derivative that possesses diversified and favorable pharmacology profile to be considered in anticancer research against various malignancies. The present study was intended to investigate the antiproliferative and chemotherapeutic potentials of 78DC (20, 40, and 80 mg/kg BW) against DMBA (20 mg in olive oil)-induced mammary carcinoma Sprague-Dawley rats...
February 12, 2018: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29435287/secondary-tumours-of-the-ampulla-of-vater-case-report-and-review-of-the-literature
#11
Francesca Sarocchi, Magdalena M Gilg, Florian Schreiber, Cord Langner
Secondary tumours of the ampulla of Vater are rare. Underlying primary tumours, clinical presentation, macroscopic appearance, treatment strategies and outcome of secondary ampullary lesions have not been systematically analysed. The present case study reported a 57-year old patient with an ampullary metastasis from renal cancer and a literature review was performed in which a further 32 patients were included. The most common responsible primary tumours were malignant melanoma and renal clear cell carcinoma, followed by breast cancer...
February 2018: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/29434476/interest-of-supportive-and-barrier-protective-skin-care-products-in-the-daily-prevention-and-treatment-of-cutaneous-toxicity-during-radiotherapy-for-breast-cancer
#12
Antoine Berger, Carlos Regueiro, Tarek Hijal, David Pasquier, Cristina De La Fuente, Florence Le Tinier, Bernard Coche-Dequeant, Eric Lartigau, Dominique Moyal, Sophie Seité, René-Jean Bensadoun
Purpose: As many as 50% of patients with cancer develop acute skin reactions to some degree with radiotherapy. Proactive skin care is often recommended to minimise these skin reactions and maintain the integrity of the epidermal barrier; nevertheless, no consensual guidelines are systematically used. This multicentre, observational, prospective study evaluated the tolerability and benefit of supportive and barrier protective skin care products in preventing radiotherapy-induced skin reactions in 253 women initiating radiotherapy (exclusive or adjuvant) for breast cancer...
2018: Breast Cancer: Basic and Clinical Research
https://www.readbyqxmd.com/read/29433490/citral-induced-apoptosis-in-mda-mb-231-spheroid-cells
#13
Siyamak Ebrahimi Nigjeh, Swee Keong Yeap, Norshariza Nordin, Behnam Kamalideghan, Huynh Ky, Rozita Rosli
BACKGROUND: Breast cancer remains a leading cause of death in women worldwide. Although breast cancer therapies have greatly advanced in recent years, many patients still develop tumour recurrence and metastasis, and eventually succumb to the disease due to chemoresistance. Citral has been reported to show cytotoxic effect on various cancer cell lines. However, the potential of citral to specifically target the drug resistant breast cancer cells has not yet been tested, which was the focus of our current study...
February 13, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29430197/profile-of-buparlisib-and-its-potential-in-the-treatment-of-breast-cancer-evidence-to-date
#14
REVIEW
Carmen Criscitiello, Giulia Viale, Giuseppe Curigliano, Aron Goldhirsch
Alteration of the phosphatidylinositol 3-kinase (PI3K)/AKT/mammalian target of rapamycin signaling pathway is key for the growth and survival of several cancers, including breast cancer. In addition, dysregulation of PI3K signaling may contribute to resistance to several anticancer agents. PI3K inhibitors may, therefore, be effective as antineoplastic therapy. Buparlisib is a potent and highly specific oral inhibitor of the pan-class I PI3K family. Buparlisib specifically inhibits class I PIK3 in the PI3K/AKT kinase signaling pathway in an ATP-competitive manner, thus inhibiting the production of the secondary messenger phosphatidylinositol (3,4,5)-trisphosphate and activation of the PI3K signaling pathway...
2018: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/29429124/brain-metastasis-in-gastroesophageal-adenocarcinoma-and-her2-status
#15
Dror Limon, Omer Gal, Noa Gordon, Lior Katz, Gali Perl, Ofer Purim, Limor Amit, Salomon M Stemmer, Yulia Kundel, Irit Ben-Aharon, Baruch Brenner, Tali Siegal, Shlomit Yust-Katz
The increased survival of patients with gastroesophageal adenocarcinoma (GAD) following improvements in treatment has been accompanied by a rising incidence of secondary brain metastasis. HER2 amplification/overexpression, which has been associated with an increased risk of brain metastasis in breast cancer, is found in about 20% of patients with GAD. The aim of this study was to evaluate the effect of HER2 status on brain metastasis in GAD. The database of a tertiary cancer center was searched for patients with GAD diagnosed in 2011-2015, and data were collected on clinical characteristics, brain metastasis, HER2 status, and outcome...
February 10, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29426245/albumin-coated-cadmium-nanoparticles-as-chemotherapeutic-agent-against-mda-mb-231-human-breast-cancer-cell-line
#16
Marzieh Azizi, Hedayatollah Ghourchian, Fatemeh Yazdian, Hojjat Alizadehzeinabad
With the aim of dedicating toxicity of cadmium nanoparticles (CdNPs) against invasive breast cancer, with minimum damage to surrounding healthy cells, CdNPs were coated with albumin nanocarrier by nanoprecipitation method and named CdNPs@BSA. The characterization was done by TEM image, DLS and UV-Vis, fluorescence, circular dichroism spectroscopy. The cytotoxic efficacy of the CdNPs@BSA against human breast cancer cells (MDA-MB 231 cells) was examined by MTT assay. Apoptosis, as the mechanism of cell death, was verified by inverted microscopy, fluorescent microscopy, gel electrophoresis and flow cytometry...
February 9, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29424451/preoperative-axillary-ultrasound-in-the-selection-of-patients-with-a-heavy-axillary-tumor-burden-in-early-stage-breast-cancer-what-leads-to-false-positive-results
#17
Ying Zhu, Wei Zhou, Xiao-Hong Jia, Ou Huang, Wei-Wei Zhan
OBJECTIVES: To determine whether imaging and clinicopathologic features could predict false-positive axillary ultrasound (US) results in the selection of patients with breast cancer who had a heavy axillary tumor burden (≥3 tumor-involved nodes). METHODS: Among 788 patients with histologically confirmed invasive breast cancer at Ruijin Hospital from October 2014 to September 2015, 162 patients (cT1-T2, cN0) with 167 axillae had suspicious axillary US findings...
February 9, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29424261/the-breast-tumor-microenvironment-role-in-cancer-development-progression-and-response-to-therapy
#18
Suruchi Mittal, Nicola J Brown, Ingunn Holen
Numerous clinical and pre-clinical studies have provided ample evidence supporting that the tumor microenvironment plays a significant role during breast cancer development, progression and in determining the therapeutic response. Areas covered: This review focuses on the evolving concept of the microenvironment as the critical participant in each step of the multi-stage process of malignant progression. Currently, only a small number of molecules form part of routine molecular diagnostics in breast caner, but microenvironment-derived biomarkers are potential additions to existing predictive and prognostic marker panels...
February 9, 2018: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/29423899/influence-of-control-group-therapy-on-the-benefit-from-dose-dense-chemotherapy-in-early-breast-cancer-a-systemic-review-and-meta-analysis
#19
REVIEW
Hadar Goldvaser, Habeeb Majeed, Domen Ribnikar, Boštjan Šeruga, Alberto Ocaña, David W Cescon, Eitan Amir
PURPOSE: Results from clinical trials of adjuvant dose-dense chemotherapy in patients with breast cancer are inconsistent. METHODS: A systematic search of MEDLINE identified studies comparing the efficacy of dose-dense adjuvant chemotherapy to a standard treatment. The primary analysis included studies that used identical regimens in the experimental and control groups, but varied only dose density. A secondary analysis included studies that used either different drugs or doses in the experimental and the control groups...
February 8, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29422016/malignancy-during-pregnancy-in-japan-an-exceptional-opportunity-for-early-diagnosis
#20
Masayuki Sekine, Yoshiyuki Kobayashi, Tsutomu Tabata, Tamotsu Sudo, Ryuichiro Nishimura, Koji Matsuo, Brendan H Grubbs, Takayuki Enomoto, Tomoaki Ikeda
BACKGROUND: Malignancy during pregnancy has become a significant cause of maternal death in developed countries, likely due to both an older pregnant population, and increases of cervical cancer in younger women. Our aim is to investigate the clinical aspects of malignancy during pregnancy in Japan and to use this information to identify opportunities for earlier detection and treatment. METHODS: We provided a questionnaire to 1508 secondary or tertiary care hospitals in Japan...
February 8, 2018: BMC Pregnancy and Childbirth
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