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https://www.readbyqxmd.com/read/28101487/immunoglobulin-g4-related-thyroid-diseases
#1
REVIEW
Dulani Kottahachchi, Duncan J Topliss
Immunoglobulin G4-related disease (IgG4-RD) is a new disease category involving many organ systems, including the endocrine system in general and the thyroid in particular. Since an initial association was made between hypothyroidism and autoimmune (IgG4-related) pancreatitis, more forms of IgG4-related thyroid disease (IgG4-RTD) have been recognized. Four subcategories of IgG4-RTD have so far been identified: Riedel thyroiditis (RT), fibrosing variant of Hashimoto thyroiditis (FVHT), IgG4-related Hashimoto thyroiditis, and Graves disease with elevated IgG4 levels...
December 2016: European Thyroid Journal
https://www.readbyqxmd.com/read/28100469/immunohistochemical-phenotype-of-breast-cancer-during-25-year-follow-up-of-the-royal-marsden-tamoxifen-prevention-trial
#2
Simone Detre, Susan Ashley, Kabir Mohammed, Ian E Smith, Trevor Powles, Mitch Dowsett
Background The randomized double-blinded Royal Marsden Tamoxifen Breast Cancer Prevention Trial in healthy high-risk women started in 1986 and is still blinded. 2471 eligible participants were randomly assigned to tamoxifen (20mg/day) or placebo for 8 years. Analysis in 2006 showed a 30% risk reduction of ER-positive invasive breast cancer mostly in the post treatment period. Biomarker analysis in this population may identify any sub-group specific preventive effects tamoxifen. Methods After a median follow-up of 18...
January 18, 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/28100467/an-essential-role-of-cbl-and-cbl-b-ubiquitin-ligases-in-mammary-stem-cell-maintenance
#3
Bhopal Mohapatra, Neha Zutshi, Wei An, Benjamin Goetz, Priyanka Arya, Timothy A Bielecki, Insha Mustaq, Matthew D Storck, Jane L Meza, Vimla Band, Hamid Band
CBL and CBL-B ubiquitin ligases are negative regulators of tyrosine kinase signaling with established roles in the immune system. However, their physiological roles in epithelial tissues are unknown. Here we used the MMTV-Cre-mediated Cbl gene deletion on a Cbl-b-null background as well as a tamoxifen-inducible mammary stem cell (MaSC)-specific Cbl/Cbl-b double knockout (DKO), using Lgr5-GFP-CreERT, to demonstrate a mammary epithelial cell-autonomous requirement of CBL and CBL-B in the maintenance of MaSCs...
January 18, 2017: Development
https://www.readbyqxmd.com/read/28096479/igf-1-receptor-modulates-foxo1-mediated-tamoxifen-response-in-breast-cancer-cells
#4
Ali Vaziri-Gohar, Yan Zheng, Kevin D Houston
: Tamoxifen is a common adjuvant treatment for ERalpha-positive breast cancer patients, however acquired resistance abrogates the efficacy of this therapeutic approach. We recently demonstrated that G protein-coupled estrogen receptor 1 (GPER1) mediates tamoxifen action in breast cancer cells by inducing insulin-like growth factor binding protein-1 (IGFBP-1) to inhibit IGF-1-dependent signaling. To determine if dysregulation of IGFBP-1 induction is associated with tamoxifen resistance, IGFBP-1 transcription was measured in tamoxifen-resistant MCF-7 cells (TamR) after tamoxifen (Tam) treatment...
January 17, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28095342/orthognathic-surgery-during-breast-cancer-treatment-a-case-report
#5
Tsuyoshi Shimo, Norie Yoshioka, Masahiro Nakamura, Soichiro Ibaragi, Tatsuo Okui, Yuki Kunisada, Masanori Masui, Mayumi Yao, Koji Kishimoto, Shoko Yoshida, Akiyoshi Nishiyama, Hiroshi Kamioka, Akira Sasaki
INTRODUCTION: In recent years, patients with orthognathic surgery in middle-aged and elderly people have come to be a more frequent occurrence. Breast cancer is the most frequently diagnosed cancer in woman worldwide, and its prevalence rate is steadily increasing. PRESENTATION OF CASE: We report a case of a 47-year-old Japanese woman in whom left-side breast cancer (Stage 1) was unexpectedly found just before orthognathic surgery in April 2012. Breast-conserving surgery was performed (estrogen receptor+, progesterone receptor+, HER2 -, surgical margin+, sentinel lymph node +) that May...
January 3, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28095275/tamoxifen-decreases-mortality-but-how
#6
Poulomi Bhattacharya, Balkees Abderrahman, V Craig Jordan
No abstract text is available yet for this article.
January 20, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28091596/non-invasive-optical-estimate-of-tissue-composition-to-differentiate-malignant-from-benign-breast-lesions-a-pilot-study
#7
Paola Taroni, Anna Maria Paganoni, Francesca Ieva, Antonio Pifferi, Giovanna Quarto, Francesca Abbate, Enrico Cassano, Rinaldo Cubeddu
Several techniques are being investigated as a complement to screening mammography, to reduce its false-positive rate, but results are still insufficient to draw conclusions. This initial study explores time domain diffuse optical imaging as an adjunct method to classify non-invasively malignant vs benign breast lesions. We estimated differences in tissue composition (oxy- and deoxyhemoglobin, lipid, water, collagen) and absorption properties between lesion and average healthy tissue in the same breast applying a perturbative approach to optical images collected at 7 red-near infrared wavelengths (635-1060 nm) from subjects bearing breast lesions...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28089627/the-relationship-between-tamoxifen-associated-nonalcoholic-fatty-liver-disease-and-the-prognosis-of-patients-with-early-stage-breast-cancer
#8
Meiying Yan, Jingxuan Wang, Qijia Xuan, Tieying Dong, Juan He, Qingyuan Zhang
PURPOSE: To investigate the relationship between tamoxifen-associated nonalcoholic fatty liver disease (NAFLD) and survival outcomes in patients with breast cancer. METHODS: Patients with early-stage invasive breast cancer after curative resection from January 2009 to June 2011 were selected. A total of 646 patients who were treated with tamoxifen were included. Patients diagnosed with NAFLD on ultrasonography were classified into the NAFLD and non-NAFLD groups...
December 24, 2016: Clinical Breast Cancer
https://www.readbyqxmd.com/read/28080180/long-term-effects-on-the-incidence-of-second-primary-cancers-in-a-randomized-trial-of-two-and-five-years-of-adjuvant-tamoxifen
#9
Johan Rosell, Bo Nordenskjöld, Nils-Olof Bengtsson, Tommy Fornander, Thomas Hatschek, Henrik Lindman, Per-Olof Malmström, Arne Wallgren, Olle Stål, John Carstensen
BACKGROUND: Tamoxifen is a well established treatment for breast cancer, but its long-term effects on the incidence of secondary cancers are not fully evaluated. MATERIAL AND METHODS: We have studied 4128 postmenopausal patients with early stage breast cancer who were alive and free of breast cancer recurrence after two years of tamoxifen, and who were randomized to receive totally two or five years of therapy. RESULTS: Compared to patients randomized to two years of tamoxifen the incidence of contralateral breast cancer [hazard ratio (HR) 0...
January 12, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28076663/synthesis-and-biological-evaluation-of-novel-amidinourea-and-triazine-congeners-as-inhibitors-of-mda-mb-231-human-breast-cancer-cell-proliferation
#10
Daniele Castagnolo, Rosemary Bass, Sarah Jenkinson, Jennifer Wright, Tora Smulders-Srinivasan, Jamie C Marshall
A series of novel amidinourea derivatives has been synthesised and the new compounds have been evaluated as inhibitors of MDA-MB-231 human breast cancer cell proliferation. In addition, a second series of triazine derivatives designed as rigid congeners of the amidinoureas was synthesised as well and the compounds were evaluated for their antiproliferative activity. Among the two series, the amidinourea 3d emerged as a potent anticancer hit compound with IC50 = 0.76 micormolar comparable to tamoxifen.
January 11, 2017: ChemMedChem
https://www.readbyqxmd.com/read/28076660/influenza-a-virus-ns1-protein-induced-jnk-activation-and-apoptosis-are-not-functionally-linked
#11
Wolfgang Nacken, Viktor Wixler, Christina Ehrhardt, Stephan Ludwig
Expression of the influenza A virus (IAV) non-structural protein NS1 results in the activation of c-Jun N-terminal kinase (JNK). Both NS1 and JNK are involved in apoptosis induction. To investigate their interrelationship, we stably expressed a tamoxifen inducible NS1 oestrogen receptor fusion-protein (NS1ERT) in mammalian cells. Upon tamoxifen stimulation, NS1ERT expressing cells partially rescued the attenuated replication of NS1-deficient IAVs and also inhibited interferon up-regulation, confirming the functional competence of NS1ERT...
January 11, 2017: Cellular Microbiology
https://www.readbyqxmd.com/read/28075498/tamoxifen-and-its-active-metabolites-inhibit-dopamine-transporter-function-independently-of-the-estrogen-receptors
#12
Sarah R Mikelman, Bipasha Guptaroy, Margaret Gnegy
As one of the primary mechanisms by which dopamine signaling is regulated, the dopamine transporter (DAT) is an attractive pharmacological target for the treatment of diseases based in dopaminergic dysfunction. In this work we demonstrate for the first time that the commonly prescribed breast cancer therapeutic tamoxifen and its major metabolites, 4-hydroxytamoxifen and endoxifen, inhibit DAT function. Tamoxifen inhibits [(3) H]dopamine uptake into hDAT-N2A cells via an uncompetitive or mixed mechanism. Endoxifen, an active metabolite of tamoxifen, asymmetrically inhibits DAT function in hDAT-N2A cells, showing a preference for the inhibition of amphetamine-stimulated dopamine efflux as compared to dopamine uptake...
January 11, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28075453/mir-375-inhibits-cancer-stem-cell-phenotype-and-tamoxifen-resistance-by-degrading-hoxb3-in-human-er-positive-breast-cancer
#13
Hui Fu, Lei Fu, Chao Xie, Wen-Shu Zuo, Yan-Song Liu, Mei-Zhu Zheng, Jin-Ming Yu
Cancer stem cell (CSC) formation and epithelial-mesenchymal transition (EMT) are pivotal events in tumor cell invasion and metastasis. They have been shown to occur in resistance to tamoxifen. Moreover, microRNAs (miRNAs) have been associated with CSCs, EMT as well as tamoxifen resistance. Studying molecular mechanism of CSCs, EMT as well as tamoxifen resistance will help us to further understand the pathogenesis and progression of the disease and offer new targets for effective therapies. In the present study, we showed that miR-375 inhibits CSC traits in breast cancer MCF-7 cells...
February 2017: Oncology Reports
https://www.readbyqxmd.com/read/28074989/-antidepressants-agents-in-breast-cancer-patients-using-tamoxifen-review-of-basic-and-clinical-evidence
#14
María Elisa Irarrázaval O, Leonardo Gaete G
Tamoxifen (Tmf), is a standard of care for women with estrogen receptor positive (ER+) breast cancer. Endoxifen is a Tmf metabolite generated by cytochrome P450 2D6 (CYP2D6). Antidepressive agents (AD) are often prescribed to women with breast cancer not only for depression, but also for anxiety and hot flashes. Some AD are substrates or inhibitors of the Tmf metabolic pathway. Therefore there may be interactions when Tmf and AD are prescribed simultaneously. Oncologic protection afforded by Tmf may become less effective or null when AD are indicated, especially in poor metabolizing patients...
October 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/28074314/a-novel-effect-of-%C3%AE-adrenergic-receptor-on-mammary-branching-morphogenesis-and-its-possible-implications-in-breast-cancer
#15
Lucía Gargiulo, María May, Ezequiel M Rivero, Sabrina Copsel, Caroline Lamb, John Lydon, Carlos Davio, Claudia Lanari, Isabel A Lüthy, Ariana Bruzzone
Understanding the mechanisms that govern normal mammary gland development is crucial to the comprehension of breast cancer etiology. β-adrenergic receptors (β-AR) are targets of endogenous catecholamines such as epinephrine that have gained importance in the context of cancer biology. Differences in β2-AR expression levels may be responsible for the effects of epinephrine on tumor vs non-tumorigenic breast cell lines, the latter expressing higher levels of β2-AR. To study regulation of the breast cell phenotype by β2-AR, we over-expressed β2-AR in MCF-7 breast cancer cells and knocked-down the receptor in non-tumorigenic MCF-10A breast cells...
January 11, 2017: Journal of Mammary Gland Biology and Neoplasia
https://www.readbyqxmd.com/read/28073843/active-estrogen-receptor-alpha-signaling-in-ovarian-cancer-models-and-clinical-specimens
#16
Courtney L Andersen, Matthew J Sikora, Michelle M Boisen, Tianzhou Ma, Alec Christie, George Tseng, Yong Seok Park, Soumya Luthra, Uma Chandran, Paul Haluska, Gina Mantia-Smaldone, Kunle Odunsi, Karen McLean, Adrian V Lee, Esther Elishaev, Robert P Edwards, Steffi Oesterreich
PURPOSE: High-grade serous ovarian cancer (HGSOC) is an aggressive disease with few available targeted therapies. Despite high expression of estrogen receptor-alpha in ~80% of HGSOC and some small but promising clinical trials of endocrine therapy, estrogen receptor-alpha has been understudied as a target in this disease. We sought to identify hormone-responsive, estrogen receptor-alpha-dependent HGSOC. EXPERIMENTAL DESIGN: We characterized endocrine response in HGSOC cells across culture conditions (2-D, 3-D, forced suspension) and in patient-derived xenograft (PDX) explants, assessing proliferation and gene expression...
January 10, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28070235/bevacizumab-and-gastrointestinal-bleeding-in-hereditary-hemorrhagic-telangiectasia
#17
George Ou, Cherry Galorport, Robert Enns
We report a case of severe, refractory gastrointestinal (GI) bleeding in a patient with hereditary hemorrhagic telangiectasia (HHT) whose massive transfusion dependence was lifted shortly after treatment with bevacizumab, an anti-vascular endothelial growth factor. The patient's bleeding had been refractory to repeated endoscopic interventions, tranexamic acid, and tamoxifen. However, following treatment with bevacizumab at 5 mg/kg every other week, nearly 300 units of packed red blood cell transfusions were avoided in one year's time...
December 27, 2016: World Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28069070/successful-management-of-synchronous-recurrent-breast-carcinoma-with-chronic-myelogenous-leukemia-a-case-report
#18
Choukri Elm'hadi, Mohamed Reda Khmamouche, Rachid Tanz, Mehdi Toreis, ElMehdi Mahtat, Mohammed Allaoui, Mohammed Oukabli, Nezha Messaoudi, Hassan Errihani, Mohammed Ichou
BACKGROUND: Survival is increasing after early breast cancer revealing frequent relapses and possibility of developing secondary malignancies. The concomitant occurrence of these two events is exceptionally disastrous and lethal. We report a case of a Moroccan woman who was successfully managed for synchronous recurrent breast carcinoma and chronic myelogenous leukemia. CASE PRESENTATION: A 42-year-old Moroccan woman was diagnosed with localized breast carcinoma in 2008...
January 10, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28065828/adipocyte-dynamics-and-reversible-metabolic-syndrome-in-mice-with-an-inducible-adipocyte-specific-deletion-of-the-insulin-receptor
#19
Masaji Sakaguchi, Shiho Fujisaka, Weikang Cai, Jonathon N Winnay, Masahiro Konishi, Brian T O'Neill, Mengyao Li, Rubén García-Martín, Hirokazu Takahashi, Jiang Hu, Rohit N Kulkarni, C Ronald Kahn
Insulin and IGF1 signaling are important for adipose tissue development and function; however, their role in mature adipocytes is unclear. Mice with a tamoxifen-inducible knockout of insulin and/or IGF1 receptors (IR/IGF1R) demonstrate a rapid loss of white and brown fat due to increased lipolysis and adipocyte apoptosis. This results in insulin resistance, glucose intolerance, hepatosteatosis, islet hyperplasia with hyperinsulinemia, and cold intolerance. This phenotype, however, resolves over 10-30 days due to a proliferation of preadipocytes and rapid regeneration of both brown and white adipocytes as identified by mTmG lineage tracing...
January 4, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28063929/mir-148a-and-mir-152-reduce-tamoxifen-resistance-in-er-breast-cancer-via-downregulating-alcam
#20
Ming-Jenn Chen, Ya-Min Cheng, Chien-Chung Chen, Yu-Chieh Chen, Ching-Ju Shen
Activated leukocyte cell adhesion molecule (ALCAM), also called CD166 is a 105-kDa transmembrane glycoprotein of the immunoglobin superfamily. In this study, we studied the association between ALCAM expression and tamoxifen resistance in ER + breast cancer and further investigated how ALCAM is regulated in the cancer cells. IHC staining data showed that the tumor tissues from non-responders (N = 20) generally had significantly stronger ALCAM staining than that from tamoxifen responders (N = 16). In vitro cell assay also confirmed ALCAM upregulation in tamoxifen resistant (TamR) MCF-7 cells than in tamoxifen sensitive (TamS) MCF-7 cells...
January 4, 2017: Biochemical and Biophysical Research Communications
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