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https://www.readbyqxmd.com/read/27931238/elaboration-of-a-nomogram-to-predict-nonsentinel-node-status-in-breast-cancer-patients-with-positive-sentinel-node-intraoperatively-assessed-with-one-step-nucleic-amplification-retrospective-and-validation-phase
#1
Franco Di Filippo, Simona Di Filippo, Anna Maria Ferrari, Raffaele Antonetti, Alessandro Battaglia, Francesca Becherini, Laia Bernet, Renzo Boldorini, Catherine Bouteille, Simonetta Buglioni, Paolo Burelli, Rafael Cano, Vincenzo Canzonieri, Pierluigi Chiodera, Alfredo Cirilli, Luigi Coppola, Stefano Drago, Luca Di Tommaso, Privato Fenaroli, Roberto Franchini, Andrea Gianatti, Diana Giannarelli, Carmela Giardina, Florence Godey, Massimo M Grassi, Giuseppe B Grassi, Siobhan Laws, Samuele Massarut, Giuseppe Naccarato, Maria Iole Natalicchio, Sergio Orefice, Fabrizio Palmieri, Tiziana Perin, Manuela Roncella, Massimo G Roncalli, Antonio Rulli, Angelo Sidoni, Corrado Tinterri, Maria C Truglia, Isabella Sperduti
BACKGROUND: Tumor-positive sentinel lymph node (SLN) biopsy results in a risk of non sentinel node metastases in micro- and macro-metastases ranging from 20 to 50%, respectively. Therefore, most patients underwent unnecessary axillary lymph node dissections. We have previously developed a mathematical model for predicting patient-specific risk of non sentinel node (NSN) metastases based on 2460 patients. The study reports the results of the validation phase where a total of 1945 patients were enrolled, aimed at identifying a tool that gives the possibility to the surgeon to choose intraoperatively whether to perform or not axillary lymph node dissection (ALND)...
December 8, 2016: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/27928699/estimating-the-oncotypedx-score-validation-of-an-inexpensive-estimation-tool
#2
Anne A Eaton, Catherine E Pesce, James O Murphy, Michelle M Stempel, Sujata M Patil, Edi Brogi, Clifford A Hudis, Mahmoud El-Tamer
BACKGROUND: OncotypeDX, a multi-gene expression assay, has been incorporated into clinical practice as a prognostic and predictive tool. However, its use in resource-constrained international healthcare systems is limited. Here we develop and validate a simplified model using clinicopathologic criteria to predict OncotypeDX score. METHODS: Patients with estrogen receptor (ER) and/or progesterone receptor (PR)-positive and HER2-negative invasive ductal carcinoma for whom the OncotypeDX test was successfully performed between 09/2008 and 12/2011 were retrospectively identified...
December 7, 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27928147/mechanistic-study-of-the-inhibitory-effect-of-kaempferol-on-uterine-fibroids-in-vitro
#3
Yanxia Li, Zhaoxia Ding, Chuanzhong Wu
BACKGROUND This study examined the effect of kaempferol on uterine fibroids in vitro and the underlying mechanism, and investigated the potential of kaempferol as a clinical drug for the treatment of uterine fibroids. MATERIAL AND METHODS Uterine fibroid tissue and surrounding smooth muscle tissue were collected for primary culture. Different concentrations of kaempferol (12 μM, 24 μM, and 48 μM) were used to treat the cells for 24, 48, and 72 hours. Ethanol was used in the control group. A CCK-8 colorimetric assay was used to detect cell proliferation...
December 8, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27926948/intrinsic-subtype-switching-and-acquired-erbb2-her2-amplifications-and-mutations-in-breast-cancer-brain-metastases
#4
Nolan Priedigkeit, Ryan J Hartmaier, Yijing Chen, Damir Vareslija, Ahmed Basudan, Rebecca J Watters, Roby Thomas, Jose P Leone, Peter C Lucas, Rohit Bhargava, Ronald L Hamilton, Juliann Chmielecki, Shannon L Puhalla, Nancy E Davidson, Steffi Oesterreich, Adam M Brufsky, Leonie Young, Adrian V Lee
Importance: Patients with breast cancer (BrCa) brain metastases (BrM) have limited therapeutic options. A better understanding of molecular alterations acquired in BrM could identify clinically actionable metastatic dependencies. Objective: To determine whether there are intrinsic subtype differences between primary tumors and matched BrM and to uncover BrM-acquired alterations that are clinically actionable. Design, Setting, and Participants: In total, 20 cases of primary breast cancer tissue and resected BrM (10 estrogen receptor [ER]-negative and 10 ER-positive) from 2 academic institutions were included...
December 7, 2016: JAMA Oncology
https://www.readbyqxmd.com/read/27925180/a-16-yin-yang-gene-expression-ratio-signature-for-er-node-breast-cancer
#5
Wayne Xu, Gaofeng Jia, Nianguang Cai, Shujun Huang, James R Davie, Marshall Pitz, Shantanu Banerji, Leigh Murphy
Breast cancer is one of the leading causes of cancer death in women. It is a complex and heterogeneous disease with different clinical outcomes. Stratifying patients into subgroups with different outcomes could help guide clinical decision making. In this study, we used two opposing groups of genes, Yin and Yang, to develop a prognostic expression ratio signature. Using the METABRIC cohort we identified a16-gene signature capable of stratifying breast cancer patients into four risk levels with intention that low-risk patients would not undergo adjuvant systemic therapy, intermediate-low-risk patients will be treated with hormonal therapy only, and intermediate-high- and high-risk groups will be treated by chemotherapy in addition to the hormonal therapy...
December 7, 2016: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27923923/antiviral-innate-immune-response-interferes-with-the-formation-of-replication-associated-membrane-structures-induced-by-a-positive-strand-rna-virus
#6
Diede Oudshoorn, Barbara van der Hoeven, Ronald W A L Limpens, Corrine Beugeling, Eric J Snijder, Montserrat Bárcena, Marjolein Kikkert
: Infection with nidoviruses like corona- and arteriviruses induces a reticulovesicular network of interconnected endoplasmic reticulum (ER)-derived double-membrane vesicles (DMVs) and other membrane structures. This network is thought to accommodate the viral replication machinery and protect it from innate immune detection. We hypothesized that the innate immune response has tools to counteract the formation of these virus-induced replication organelles in order to inhibit virus replication...
December 6, 2016: MBio
https://www.readbyqxmd.com/read/27923387/mammographic-texture-and-risk-of-breast-cancer-by-tumor-type-and-estrogen-receptor-status
#7
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
https://www.readbyqxmd.com/read/27923036/cotargeting-of-cyp-19-aromatase-and-emerging-pivotal-signalling-pathways-in-metastatic-breast-cancer
#8
REVIEW
Stine Daldorff, Randi Margit Ruud Mathiesen, Olav Erich Yri, Hilde Presterud Ødegård, Jürgen Geisler
Aromatase inhibition is one of the cornerstones of modern endocrine therapy of oestrogen receptor-positive (ER+) metastatic breast cancer (MBC). The nonsteroidal aromatase inhibitors anastrozole and letrozole, as well as the steroidal aromatase inactivator exemestane, are the preferred drugs and established worldwide in all clinical phases of the disease. However, although many patients suffering from MBC experience an initial stabilisation of their metastatic burden, drug resistance and disease progression occur frequently, following in general only a few months on treatment...
December 6, 2016: British Journal of Cancer
https://www.readbyqxmd.com/read/27921170/effect-of-photon-initiated-photoacoustic-streaming-passive-ultrasonic-and-sonic-irrigation-techniques-on-dentinal-tubule-penetration-of-irrigation-solution-a-confocal-microscopic-study
#9
Merve Akcay, Hakan Arslan, Merve Mese, Nazlı Durmus, Ismail Davut Capar
OBJECTIVES: The aim of this in vitro study was to evaluate the efficacy of different irrigation techniques including laser-activated irrigation using an erbium:yttrium-aluminum-garnet (Er:YAG) laser with a novel tip design (photon-induced photoacoustic streaming (PIPS)), Er:YAG laser with Preciso tip, sonic activation, and passive ultrasonic activation on the final irrigation solution penetration into dentinal tubules by using a laser scanning confocal microscope. MATERIAL AND METHODS: In this study, 65 extracted single-rooted human mandibular premolars were instrumented up to size 40 and randomly divided into 5 groups (n = 13) based on the activation technique of the final irrigation solution as follows: conventional irrigation (control group), sonic activation, passive ultrasonic activation, Er:YAG-PIPS tip activation, and Er:YAG-Preciso tip activation...
December 5, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27921020/epidemiology-of-cervical-spine-fractures
#10
Mahnaz Yadollahi, Shahram Paydar, Haleh Ghaem, Mohammad Ghorbani, Seyed Mohsen Mousavi, Ali Taheri Akerdi, Eimen Jalili, Mohammad Hadi Niakan, Hossein Ali Khalili, Ali Haghnegahdar, Shahram Bolandparvaz
BACKGROUND: Epidemiology of cervical spine fractures (CSfx) in trauma patients of general population is not yet exclusively known. OBJECTIVES: The purpose of this study was to evaluate the epidemiology of CSfx in trauma patients. PATIENTS AND METHODS: Data from trauma patients admitted in the emergency room (ER) of Shiraz Shahid Rajaei hospital during the 3.5 years period from September 22, 2009 to March 21, 2013, were gathered. All trauma patients with CSfx and/or spinal cord injuries were included in the study...
July 2016: Trauma Monthly
https://www.readbyqxmd.com/read/27917381/arachidonoyl-specific-diacylglycerol-kinase-%C3%AE%C2%B5-and-the-endoplasmic-reticulum
#11
REVIEW
Tomoyuki Nakano, Hirooki Matsui, Toshiaki Tanaka, Yasukazu Hozumi, Ken Iseki, Kaneyuki Kawamae, Kaoru Goto
The endoplasmic reticulum (ER) comprises an interconnected membrane network, which is made up of lipid bilayer and associated proteins. This organelle plays a central role in the protein synthesis and sorting. In addition, it represents the synthetic machinery of phospholipids, the major constituents of the biological membrane. In this process, phosphatidic acid (PA) serves as a precursor of all phospholipids, suggesting that PA synthetic activity is closely associated with the ER function. One enzyme responsible for PA synthesis is diacylglycerol kinase (DGK) that phosphorylates diacylglycerol (DG) to PA...
2016: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/27916883/enhanced-autophagy-in-polycystic-kidneys-of-aqp11-null-mice
#12
Yasuko Tanaka, Mayumi Watari, Tatsuya Saito, Yoshiyuki Morishita, Kenichi Ishibashi
Aquaporin-11 (AQP11) is an intracellular water channel expressed at the endoplasmic reticulum (ER) of the proximal tubule. Its gene disruption in mice leads to intracellular vacuole formation at one week and the subsequent development of polycystic kidneys by three weeks. As the damaged proximal tubular cells with intracellular vacuoles form cysts later, we postulated that autophagy may play a role in the cyst formation and examined autophagy activity before and after cyst development in AQP11(-/-) kidneys...
November 30, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27915204/powerpiinc-preoperative-window-of-endocrine-therapy-provides-information-to-increase-compliance-trial-changes-in-tumor-proliferation-index-and-quality-of-life-with-7-days-of-preoperative-tamoxifen
#13
Adam L Cohen, Rachel E Factor, Kathi Mooney, Mohamed E Salama, Mark Wade, Victoria Serpico, Emily Ostrander, Edward Nelson, Jane Porretta, Cindy Matsen, Philip Bernard, Ken Boucher, Leigh Neumayer
OBJECTIVES: A decrease in Ki67 during neoadjuvant therapy predicts response to tamoxifen. Previous trials have shown a decreased Ki67 in breast tumors with as little as two or more weeks of preoperative tamoxifen. Shortening the preoperative treatment time in window of opportunity clinical trials makes these trials more attractive to women. POWERPIINC examined the effect of 7 days of preoperative tamoxifen on breast tumor proliferation and patient symptoms. METHODS: Women with untreated stage I/II, ER-positive, invasive breast cancer with no contraindications to tamoxifen were enrolled...
December 1, 2016: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/27913747/clinicopathological-significance-of-oestrogen-receptor-expression-in-non-small-cell-lung-cancer
#14
Xiang-Qi Chen, Li-Xian Zheng, Zhi-Ying Li, Ting-Yan Lin
OBJECTIVE: To investigate the expression and clinicopathological significance of the oestrogen receptor (ER) in non-small cell lung cancer (NSCLC). METHODS: ER expression was examined by immunohistochemical staining of tumour tissue and adjacent normal lung tissue from 67 NSCLC patients. The relationships between ER expression and clinicopathological features were analysed. RESULTS: A higher percentage of NSCLC tissues (28/67, 41.79%) than adjacent normal lung tissues (10/55, 18...
December 2, 2016: Journal of International Medical Research
https://www.readbyqxmd.com/read/27913278/molecular-basis-for-the-dual-subcellular-distribution-of-microsomal-glutathione-transferase-1
#15
Miyuki Shimoji, Ricardo A Figueroa, Etienne Neve, Danuta Maksel, Gabriela Imreh, Ralf Morgenstern, Einar Hallberg
Microsomal glutathione transferase 1 (MGST1) is a membrane bound enzyme involved in the detoxification of reactive electrophiles and protection of membranes from oxidative stress. The enzyme displays an unusual and broad subcellular distribution with especially high levels in the endoplasmic reticulum (ER) and outer mitochondrial membrane (OMM). Here we examined the molecular basis for this dual distribution. We hypothesized that the amphipathic properties of the first transmembrane segment (TMS), that contains a positively charged lysine (K25), is a central feature guiding dual targeting...
November 29, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27912179/cysteine-optical-sensing-with-an-up-conversion-host-and-two-chemosensors-derived-from-rhodamine-construction-characterization-and-performance
#16
Chen Lin, Fang Zhigang
This paper focused on two rhodamine chemosensors for cysteine optical sensing. To minimize their photobleaching caused by excitation light, up-conversion NaYF4:Yb(3+)/Er(3+) nanocrystals were prepared and used as excitation host. Photophysical measurement on this host and the two chemosensors suggested that chemosensor absorption matched well with host emission. An efficient energy transfer between them was discussed and confirmed by their spectral analysis and emission lifetime comparison. Job's plot suggested that our chemosensors followed a simple recognition mechanism towards cysteine with binding stoichiometry of 1:1...
November 24, 2016: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/27909883/high-expression-of-ceacam19-a-new-member-of-carcinoembryonic-antigen-gene-family-in-patients-with-breast-cancer
#17
Mehrdad Asghari Estiar, Rezvan Esmaeili, Ali-Akbar Zare, Leila Farahmand, Hassan Fazilaty, Ali Zekri, Narges Jafarbeik-Iravani, Keivan Majidzadeh-A
Carcinoembryonic antigen (CEA) family members play important roles in malignancies and are introduced as biomarkers in different types of cancers. Among them CEACAM19 (CEAL1) gene, a new member of the CEA family, remains to be fully elucidated. The aim of this study was investigating the mRNA expression level of CEACAM19 in tumor samples of breast cancer patients compared to breast tissue of normal individuals. We evaluated the expression level of this gene in 75 breast tumors by using real-time quantitative PCR...
December 1, 2016: Clinical and Experimental Medicine
https://www.readbyqxmd.com/read/27905104/biomarkers-of-folate-and-vitamin-b12-and-breast-cancer-risk-report-from-the-epic-cohort
#18
M Matejcic, J de Batlle, C Ricci, C Biessy, F Perrier, I Huybrechts, E Weiderpass, Boutron-Mc Ruault, C Cadeau, M His, D G Cox, H Boeing, R T Fortner, R Kaaks, P Lagiou, A Trichopoulou, V Benetou, R Tumino, S Panico, S Sieri, D Palli, F Ricceri, H B Bueno-de-Mesquita, G Skeie, P Amiano, M J Sánchez, M D Chirlaque, A Barricarte, J R Quirós, G Buckland, C H van Gils, P H Peeters, T J Key, E Riboli, B Gylling, A Zeleniuch-Jacquotte, M J Gunter, I Romieu, V Chajès
Epidemiological studies have reported inconsistent findings for the association between B vitamins and breast cancer (BC) risk. We investigated the relationship between biomarkers of folate and vitamin B12 and the risk of BC in the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort. Plasma concentrations of folate and vitamin B12 were determined in 2,491 BC cases individually matched to 2,521 controls among women who provided baseline blood samples. Multivariable logistic regression models were used to estimate odds ratios by quartiles of either plasma B vitamin...
December 1, 2016: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27903677/combined-inhibition-of-both-p110%C3%AE-and-p110%C3%AE-isoforms-of-phosphatidylinositol-3-kinase-is-required-for-sustained-therapeutic-effect-in-pten-deficient-er-breast-cancer
#19
Sarah R Hosford, Lloye M Dillon, Stephanie J Bouley, Rachele Rosati, Wei Yang, Vivian S Chen, Eugene Demidenko, Rocco P Morra, Todd W Miller
PURPOSE: Determine the roles of the phosphatidylinositol 3-kinase (PI3K) isoforms p110α and p110β in PTEN-deficient, estrogen receptor α (ER)-positive breast cancer, and the therapeutic potential of isoform-selective inhibitors. EXPERIMENTAL DESIGN: Anti-estrogen-sensitive and -resistant PTEN-deficient, ER+ human breast cancer cell lines, and mice bearing anti-estrogen-resistant xenografts were treated with the anti-estrogen fulvestrant, the p110α inhibitor BYL719, the p110β inhibitor GSK2636771, or combinations...
November 30, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27903276/accurate-prediction-of-response-to-endocrine-therapy-in-breast-cancer-patients-current-and-future-biomarkers
#20
REVIEW
Cigdem Selli, J Michael Dixon, Andrew H Sims
Approximately 70% of patients have breast cancers that are oestrogen receptor alpha positive (ER+) and are therefore candidates for endocrine treatment. Many of these patients relapse in the years during or following completion of adjuvant endocrine therapy. Thus, many ER+ cancers have primary resistance or develop resistance to endocrine therapy during treatment. Recent improvements in our understanding of how tumours evolve during treatment with endocrine agents have identified both changes in gene expression and mutational profiles, in the primary cancer as well as in circulating tumour cells...
December 1, 2016: Breast Cancer Research: BCR
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