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Early Breast Cancer

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https://www.readbyqxmd.com/read/29036789/protein-kinase-c-%C3%AE-dependent-regulation-of-ubiquitin-proteasome-system-function-in-breast-cancer
#1
Si Sun, Qi Wu, Junlong Song, Shengrong Sun
Besides the crucial role of hyperinsulinemia in the development of breast cancer with Type 2 diabetes mellitus (T2DM), it has been shown that hyperglycemia could contribute to promote cancer progression. A remarkable association within hyperglycemia, PKCδ and Ubiquitin-proteasome system (UPS) has been reported, suggesting that PKCδ may mediate high glucose-induced UPS activation in breast cancer cells. Although the independent effects of PKCδ or UPS on breast cancer and T2DM are increasingly supported by experimental evidence, the complex interactional link between PKCδ and UPS is still unclear...
September 29, 2017: Cancer Biomarkers: Section A of Disease Markers
https://www.readbyqxmd.com/read/29036489/training-community-health-workers-to-promote-breast-cancer-screening-in-brazil
#2
Lorna Bittencourt, Isabel C Scarinci
Although it has been show that early detection through mammograms is the most effective way to reduce breast cancer mortality, breast cancer is the leading cause of cancer deaths among women worldwide with survival rates being even lower in low- and middle-income countries as compared to high-income countries. Despite the availability of breast cancer screening programs in Brazil through the public health system, some women do not participate in these programs due to structural and/or inter/intrapersonal barriers...
September 26, 2017: Health Promotion International
https://www.readbyqxmd.com/read/29035645/factors-that-contributed-to-black-white-disparities-in-survival-among-nonelderly-women-with-breast-cancer-between-2004-and-2013
#3
Ahmedin Jemal, Anthony S Robbins, Chun Chieh Lin, W Dana Flanders, Carol E DeSantis, Elizabeth M Ward, Rachel A Freedman
Purpose To estimate the contribution of differences in demographics, comorbidity, insurance, tumor characteristics, and treatment to the overall mortality disparity between nonelderly black and white women diagnosed with early-stage breast cancer. Patients and Methods Excess relative risk of all-cause death in black versus white women diagnosed with stage I to III breast cancer, expressed as a percentage and stratified by hormone receptor status for each variable (demographics, comorbidity, insurance, tumor characteristics, and treatment) in sequentially, propensity-scored, optimally matched patients by using multivariable hazard ratios (HRs)...
October 16, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29035448/a-case-study-in-advanced-lung-cancer-patients-with-vimentin-over-expression
#4
Nagla A Karim, Ihab Eldessouki, Mahendar Yellu, Tariq Namad, Jiang Wang, Ola Gaber
BACKGROUND: Vimentin belongs to an intermediate filament (IF) family of proteins, mainly present in mesenchymal cells and has a crucial role in maintaining cellular integrity. Vimentin can induce epithelial to mesenchymal transition, and thus increase migration and invasion capacity of the cells. It has been shown to be a useful and reliable diagnostic and prognostic marker in several cancers including colon cancers, breast and hepatocellular cancers. Recent studies suggest that it may have a role in distant metastasis of non-small cell lung cancer (NSCLC) accounting for poor survival [1]...
October 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/29034880/generation-of-induced-pluripotent-stem-cell-ipsc-line-from-a-patient-with-triple-negative-breast-cancer-with-hereditary-exon-17-deletion-of-brca1-gene
#5
Frank Griscelli, Noufissa Oudrhiri, Olivier Feraud, Dominique Divers, Lucie Portier, Ali G Turhan, Annelise Bennaceur Griscelli
BRCA1 germline mutation confers hereditary predisposition for breast and ovarian cancer. To understand the physiopathology of mammary and ovarian epithelial cancer transformation, and to identify early driver molecular events, we have generated an iPSC line from a patient carrying a germline exon 17 deletion in BRCA1 gene (BRAC1Ex17 iPSC) in a high-risk family context. Blood cells were reprogrammed used non-integrative virus of Sendaï. The BRCA1-deleted iPSC had normal karyotype, harboured a deletion in the exon 17 of the BRCA1 gene, expressed pluripotent hallmarks and had the differentiation capacity into the three germ layers...
October 2017: Stem Cell Research
https://www.readbyqxmd.com/read/29033181/pathobiology-of-her-2-positive-small-invasive-t1a-b-breast-cancer-a-wolf-in-sheep-s-clothing
#6
Joško Bezić, Ivana Šamija Projić, Petar Projić, Kristina Meljanac Salopek, Piero Marin Živković, Joško Božić, Snježana Tomić
Small invasive breast cancers (cancers with maximum diameter <1cm, T1a,b) become more prevalent form of breast cancer as a result of the introduction of breast cancer mammographic screening programs. Although associated with an excellent prognosis, T1a,b breast cancers are heterogeneous group of tumors with prognostically unfavorable subset of cases, primarily those with axillary lymph node metastases. To determine if the HER2 overexpression is associated with the prognostically unfavorable traditional clinicopathological features in this group of breast cancers, clinicopathological features (age, tumor size, histological type, histological grade, nodal status, hormone receptor status, proliferation index, lymphovascular invasion, ploidy) of 38 HER2 positive T1a,b cancers were compared with those of the control group consisting of 315 HER2 negative T1a,b cancers...
October 9, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/29032999/a-prospective-phase-i-comparison-of-toxicity-and-cosmesis-outcomes-of-single-fraction-iort-and-hypofractionated-radiotherapy-with-iort-boost-in-early-stage-breast-cancer
#7
Tanuja Bhandari, Wesley Babaran, Afshin Forouzannia, Venita Williams, Jay Harness, Michele Carpenter, Maher Gobran, Rajesh Khanijou, Brittany Wagman, Robert Ash, Lawrence D Wagman
PURPOSE: Radiation therapy is proven to reduce local recurrence in patients with early-stage breast cancer. To reduce toxicity, treatment time, and improve accuracy, intraoperative radiation therapy was used as definitive treatment or as a boost. The study's objective was to compare the short-term toxicity and cosmesis of single-fraction (SF) IORT and hypofractionated radiotherapy with IORT boost (HfB) given as definitive treatment. METHODS AND MATERIALS: Between March 2011 and December 2013, 57 patients aged 45-91 years and 24 patients aged 43-83 years (total n = 81) with Stage 0-II were treated with SF or HfB (Mobetron, IntraOp Medical, Sunnyvale, CA)...
October 9, 2017: Brachytherapy
https://www.readbyqxmd.com/read/29032804/-clinical-relevance-of-esr1-circulating-mutations-detection-in-hormone-receptor-positive-metastatic-breast-cancer
#8
REVIEW
Florian Clatot, Anne Perdrix, David Sefrioui, Nasrin Sarafan-Vasseur, Frédéric Di Fiore
If hormone therapy is a key treatment for hormone receptor positive advanced breast cancers, secondary resistance occurs as a rule. Recently, acquired alterations of the ESR1 gene have been identified as a mechanism of resistance on aromatase inhibitor (AI) treatment. The selective pressure by AI exposure during the metastatic setting triggers the emergence of ESR1 activating mutations. In that context, the "liquid biopsy" concept has been used to detect this molecular resistance before progression. Thus, the ESR1 circulating mutation detection will soon be used in daily practice to help monitoring patients on AI treatment and provide an early change for specific therapies that still have to be determined in prospective clinical trials...
October 9, 2017: Bulletin du Cancer
https://www.readbyqxmd.com/read/29032291/impact-of-an-osteoporosis-specialized-unit-on-bone-health-in-breast-cancer-survivals-treated-with-aromatase-inhibitors
#9
Purificación Martínez, Elena Galve, Virginia Arrazubi, M Ángeles Sala, Seila Fernández, Clara E Pérez, Juan F Arango, Iñaki Torre
OBJECTIVE: Considering the increased fracture risk in early breast cancer patients treated with aromatase inhibitors (AI), we assessed the impact of a preventive intervention conducted by a specialized osteoporosis unit on bone health at AI treatment start. MATERIAL AND METHODS: Retrospective cohort of postmenopausal women who started treatment with AI after breast cancer surgical/chemotherapy treatment and were referred to the osteoporosis unit for a comprehensive assessment of bone health...
October 11, 2017: Reumatología Clinica
https://www.readbyqxmd.com/read/29031778/extended-adjuvant-aromatase-inhibition-after-sequential-endocrine-therapy-data-a-randomised-phase-3-trial
#10
Vivianne C G Tjan-Heijnen, Irene E G van Hellemond, Petronella G M Peer, Astrid C P Swinkels, Carolien H Smorenburg, Maurice J C van der Sangen, Judith R Kroep, Hiltje De Graaf, Aafke H Honkoop, Frans L G Erdkamp, Franchette W P J van den Berkmortel, Maaike de Boer, Wilfred K de Roos, Sabine C Linn, Alexander L T Imholz, Caroline M Seynaeve
BACKGROUND: The effect of extended adjuvant aromatase inhibition in hormone receptor-positive breast cancer after sequential endocrine therapy of tamoxifen followed by an aromatase inhibitor for a 5-year treatment period still needs clarification. To address this issue, we began the DATA study to assess different durations of anastrozole therapy after tamoxifen. METHODS: DATA was a prospective, randomised, open-label, multicentre, phase 3 study done in 79 hospitals in the Netherlands...
October 11, 2017: Lancet Oncology
https://www.readbyqxmd.com/read/29031423/the-state-of-surgical-axillary-management-and-adjuvant-radiotherapy-for-early-stage-invasive-breast-cancer-in-the-modern-era
#11
Justin M Mann, Xian Wu, Paul Christos, Himanshu Nagar
BACKGROUND: For clinical T1-2N0 breast cancer, sentinel lymph node biopsy (SLNB) has been shown in American College of Surgeons Oncology Group (ACOSOG) Z0011 to be sufficient for women with 1 to 2 positive sentinel lymph nodes with no added benefit for completion axillary lymph node dissection (ALND). Z0011 specified whole breast radiotherapy (RT) using standard tangential fields; however, later analysis showed variation in field design. We assessed nationwide practice patterns and examined factors associated with patients undergoing completion ALND and subsequent radiation field design...
September 19, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/29030106/the-shift-from-sentinel-lymph-node-biopsy-performed-either-before-or-after-neoadjuvant-systemic-therapy-in-the-clinical-negative-nodes-of-breast-cancer-patients-results-and-the-advantages-and-disadvantages-of-both-procedures
#12
Sergi Fernandez-Gonzalez, Catalina Falo, Maria Jesus Pla, Sonia Pernas, Maite Bajen, Teresa Soler, Raul Ortega, Cecilia Quetglas, Xavier Perez-Martin, Maria Eulalia Fernandez Montoli, Miriam Campos, Mar Varela-Rodriguez, Jordi Ponce, Amparo Garcia-Tejedor
BACKGROUND: In patients with breast cancer who are candidates for neoadjuvant therapy (NAT), the timing of when to perform sentinel lymph node biopsy (SLNB) remains under discussion. The aim of this study was to compare the advantages and disadvantages of SLNB performed before and after NAT. PATIENTS AND METHODS: One hundred seventy-two patients, T1c to T3 and N0 (clinically and according to ultrasound) candidates for NAT were included. We compared the outcomes of 2 groups: (1) 122 patients of whom SLNB was performed before NAT (pre-NAT) from December 2006 to April 2014; and (2) 50 patients with SLNB performed after NAT (post-NAT) from May 2014 to July 2016...
September 4, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/29029470/real-time-in-vivo-imaging-of-metastatic-bone-tumors-with-a-targeted-near-infrared-fluorophore
#13
Wonbong Lim, HongMoon Sohn, Youngjong Ko, Mineon Park, Bora Kim, Danbi Jo, Jin Seok Jung, Dae Hyeok Yang, Jangho Kim, Ok Joon Kim, Donghwi Kim, Young Lae Moon, Jung-Joon Min, Hoon Hyun
Tumors of the prostate or breast are particularly likely to metastasize to the bone, and early diagnosis of metastatic bone tumors is important for designing an effective treatment strategy. Imaging modalities for the detection of bone metastasis are limited, and radiation-based techniques are commonly used. Here, we investigated the efficacy of selective near-infrared (NIR) fluorescence detection of metastatic bone tumors and its role in the detection of bone metastasis in prostate and breast cancer cell lines and in a xenograft mouse model...
September 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29027598/a-randomized-phase-ii-study-of-weekly-paclitaxel-with-or-without-pelareorep-in-patients-with-metastatic-breast-cancer-final-analysis-of-canadian-cancer-trials-group-ind-213
#14
V Bernstein, S L Ellard, S F Dent, D Tu, M Mates, S K Dhesy-Thind, L Panasci, K A Gelmon, M Salim, X Song, M Clemons, D Ksienski, S Verma, C Simmons, H Lui, K Chi, H Feilotter, L J Hagerman, L Seymour
BACKGROUND: Pelareorep, a serotype 3 reovirus, has demonstrated preclinical and early clinical activity in breast cancer and synergistic cytotoxic activity with microtubule targeting agents. This multicentre, randomized, phase II trial was undertaken to evaluate the efficacy and safety of adding pelareorep to paclitaxel for patients with metastatic breast cancer (mBC). METHODS: Following a safety run-in of 7 patients, 74 women with previously treated mBC were randomized either to paclitaxel 80 mg/m(2) intravenously on days 1, 8, and 15 every 4 weeks plus pelareorep 3 × 10(10) TCID50 intravenously on days 1, 2, 8, 9, 15, and 16 every 4 weeks (Arm A) or to paclitaxel alone (Arm B)...
October 13, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29027483/cdk4-6-blockade-in-breast-cancer-current-experience-and-future-perspectives
#15
Dimitrios Zardavas, Noam Pondé, Konstantinos Tryfonidis
Dysregulated cellular proliferation, one of the hallmarks of cancer, is mediated by aberrant activation of the cell cycle machinery through the biological effects of cyclin-dependent kinases (CDKs). The clinical development of non-selective CDK inhibitors failed due to combined lack of efficacy and excessive toxicity reported by clinical trials across different cancer types. The clinical development of second generation, CDK4/6-selective inhibitors, namely palbociclib, abemaciclib and ribociclib, led to practice-changing results in the setting of breast cancer...
October 13, 2017: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/29027156/mapping-bone-marrow-niches-of-disseminated-tumor-cells
#16
Weijie Zhang, Hin Ching Lo, Xiang H-F Zhang
Breast cancer cells may disseminate early, before tumor diagnosis. Disseminated tumor cells, or DTCs, reside in the bone marrow, and may persist for years or even decades. Some of these cells may be re-activated to resume aggressive growth, and eventually become overt bone metastases. Recent studies have begun to shed light on this complicated process and revealed multiple steps and intermediate states of colonizing DTCs. However, how cancer-host interactions evolve during this process needs to be further understood...
October 11, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/29027049/acute-phase-dynamics-of-circulating-tumor-cells-after-paclitaxel-and-doxorubicin-chemotherapy-in-breast-cancer-mouse-models
#17
Yayoi Adachi, Mayumi Yoshimura, Keiko Nishida, Hisanobu Usuki, Keiko Shibata, Masaya Hattori, Naoto Kondo, Yasushi Yatabe, Hiroji Iwata, Toyone Kikumori, Yasuhiro Kodera, Hayao Nakanishi
PURPOSE: Circulating tumor cells (CTCs) can provide a potentially minimal invasive source for monitoring chemotherapeutic effects. However, detailed in vivo dynamics of CTC after chemotherapy remain largely unknown. METHODS: We monitored CTC number and morphology early after chemotherapy using a newly developed cytology-based CTC detection device and triple-negative breast cancer mouse CTC models with spontaneous lung metastatic potential. RESULTS: Paclitaxel inhibited cell growth of breast cancer cells by mainly G2/M cell cycle arrest and partly apoptosis, whereas doxorubicin inhibited cell growth mainly by apoptosis and partly G2 cell cycle arrest in vitro...
October 12, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29025611/carbon-fiber-reinforced-intramedullary-nailing-in-musculoskeletal-tumor-surgery-a-national-multicentric-experience-of-the-italian-orthopaedic-society-siot-bone-metastasis-study-group
#18
Andrea Piccioli, Raimondo Piana, Michele Lisanti, Alberto Di Martino, Barbara Rossi, Francesco Camnasio, Marco Gatti, Pietro Maniscalco, Franco Gherlinzoni, Maria Silvia Spinelli, Davide Maria Donati, Roberto Biagini, Rodolfo Capanna, Vincenzo Denaro
INTRODUCTION: Carbon fiber reinforced (CFR) implants have been proposed for the treatment of fractures or impending fractures of the long bones in the oncology patient. Aim of this study is to present the largest cohort of oncology patients operated by CFR nailing by the Italian Orthopaedic Society (SIOT) Bone Metastasis Study Group. METHODS: 53 adult oncology patients were operated on with a CFR-PEEK nail. All the data from adjuvants therapies were collected. Bone callus formation, response to radiotherapy, relapse or progression of the osteolysis were recorded...
October 2017: Injury
https://www.readbyqxmd.com/read/29025377/18f-fdg-pet-ct-in-breast-cancer-evidence-based-recommendations-in-initial-staging
#19
Ana Paula Caresia Aroztegui, Ana María García Vicente, Soledad Alvarez Ruiz, Roberto Carlos Delgado Bolton, Javier Orcajo Rincon, Jose Ramon Garcia Garzon, Maria de Arcocha Torres, Maria Jose Garcia-Velloso
Current guidelines do not systematically recommend 18F-FDG PET/CT for breast cancer staging; and the recommendations and level of evidence supporting its use in different groups of patients vary among guidelines. This review summarizes the evidence about the role of 18F-FDG PET/CT in breast cancer staging and the therapeutic and prognostic impact accumulated in the last decade. Other related aspects, such as the association of metabolic information with biology and prognosis are considered and evidence-based recommendations for the use of 18F-FDG PET/CT in breast cancer staging are offered...
October 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/29024822/pubertally-initiated-high-fat-diet-promotes-mammary-tumorigenesis-in-obesity-prone-fvb-mice-similarly-to-obesity-resistant-balb-c-mice
#20
Yirong Zhu, Mark D Aupperlee, Sandra Z Haslam, Richard C Schwartz
Premenopausal breast cancer is associated with increased animal fat consumption among normal-weight but not overweight women. Our previous findings in obesity-resistant BALB/c mice showed that a diet high in saturated animal fat (HFD) promotes mammary tumorigenesis in both DMBA carcinogenesis and Trp53-null transplant models. Having made these observations in BALB/c mice, which have very modest HFD weight gain, we determined the effects of HFD in FVB mice, which gain significant weight on HFD. Three-week-old FVB mice fed a low-fat diet or HFD were subjected to 7,12-dimethylbenz[a]anthracene-induced carcinogenesis...
October 9, 2017: Translational Oncology
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