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https://www.readbyqxmd.com/read/28738326/difficulty-in-the-cytodiagnosis-of-mammary-analogue-secretory-carcinoma-survey-of-109-cytologists-with-a-case-originating-from-a-minor-salivary-gland
#1
Keita Kai, Akimichi Minesaki, Kumiko Suzuki, Mikio Monji, Mitsuo Nakamura, Hisayuki Tsugitomi, Yuichiro Kuratomi, Shinichi Aishima
BACKGROUND: Mammary analogue secretory carcinoma (MASC) of the salivary gland shows morphologic similarities and shares an immunophenotype and characteristic ETV6-NTRK3 translocation with secretory carcinoma of the breast. We present a buccal case of MASC along with a survey-based debate about its cytologic diagnosis by fine-needle aspiration (FNA). CASE: FNA of the buccal nodule of a 58-year-old Japanese man was initially performed by 3 cytologists who gave different assessments of the Papanicolaou classification (i...
July 25, 2017: Acta Cytologica
https://www.readbyqxmd.com/read/28733529/immunotherapy-of-wap-tnp-mice-with-early-stage-mammary-gland-tumors
#2
Michael Bruns, Wolfgang Deppert
The SV40 transgenic BALB/c mouse based WAP-T/WAP-TNP model for triple-negative breast cancer allows the analysis of parameters influencing immunotherapeutic approaches. Except for WAP-TNP tumors expressing the immune-dominant LCMV NP-epitope within SV40 T-antigen (T-AgNP) which is not expressed by T-Ag of WAP-T tumors, the tumors are extremely similar. Comparative anti-PD1/PD-L1 immunotherapy of WAP-T and WAP-TNP mice supported the hypothesis that the immunogenicity of tumor antigen T-cell epitopes strongly influences the success of immune checkpoint blockade therapy, with highly immunogenic T-cell epitopes favoring rapid CTL exhaustion...
June 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28732031/breast-tissue-ablation-with-irreversible-electroporation-in-rabbits-a-safety-and-feasibility-study
#3
Wenlong Zhang, Wanning Wang, Wei Chai, Xiaomei Luo, Jiannan Li, Jian Shi, Liqi Bi, Lizhi Niu
BACKGROUND AND AIM: Irreversible electroporation (IRE) was confirmed to control several solid tumors effectively in vivo. Our preclinical study aimed to assess the feasibility and safety of IRE in the breast of rabbit. METHODS: Thirty New Zealand white rabbits were randomly divided into 3 groups of 10 rabbits (control group, IRE group A, and B). Two mono-electrode needles were inserted into the breast tissue by percutaneous puncture. Electrocardiogram and vital signs were monitored before, during, and after ablation...
2017: PloS One
https://www.readbyqxmd.com/read/28724908/design-and-discovery-of-novel-monastrol-1-3-5-triazines-as-potent-anti-breast-cancer-agent-via-attenuating-epidermal-growth-factor-receptor-tyrosine-kinase
#4
Jitendra Kumar Srivastava, Girinath G Pillai, Hans Raj Bhat, Amita Verma, Udaya Pratap Singh
A novel series of hybrid analogues of monastrol-1,3,5-triazine were designed and developed via one-pot synthesis using Bi(NO3)3 as a catalyst. Entire compounds were evaluated for their anticancer activity against HeLa (cervical cancer), MCF-7 (breast cancer), HL-60 (Human promyelocytic leukemia), HepG2 (Hepatocellular carcinoma) and MCF 12A (normal epithelial breast cell line) using MTT assay, where they showed highest inhibitory activity against MCF-7. The molecules were also found to be non-toxic to MCF 12A cells...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28724033/ethical-issues-on-the-synthetic-phosphoethanolamine-clinical-trial
#5
Francisco José Roma Paumgartten
Notwithstanding its approval by the National Committee for Ethics in Research (Conep) on April 19, 2016, a trial of the so-called "synthetic" phosphoethanolamine (syn-phospho) pill in cancer patients raises ethical concerns. An analysis by a laboratory contracted by the Ministry of Science, Technology and Innovation (MCTI) revealed that syn-phospho contained a great amount of impurities and did not meet standards of pharmaceutical quality required for an investigational drug. Cytotoxicity against human tumor cell lines and in vivo rodent xenograft tumor assays consistently failed to demonstrate a potential anticancer activity of syn-phospho...
May 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28723234/flexible-small-molecular-anti-estrogens-with-n-n-dialkylated-2-5-diethoxy-4-morpholinoaniline-scaffold-targets-multiple-estrogen-receptor-conformations
#6
Bethany K Asare, Emmanuel Yawson, Rajendram V Rajnarayanan
Estrogen mediates various cellular processes including cell proliferation, differentiation, growth and mammary gland function. Estrogen Receptors (ERs) are expressed in 70% of breast cancers. Consequently, estrogen mediated ER signaling plays a critical role in breast cancer diagnosis, prognosis, and treatment. Estrogen Receptors are ligand-triggered transcription factors. However, in the absence of a cognate estrogenic ligand, ERs can be activated by a variety of other extracellular signals. Tamoxifen, an anti-estrogen that selectively targets ER, induces substantial regression of breast tumors and an increase in disease-free survival...
July 19, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28720577/lysyl-oxidase-like-protein-loxl2-promotes-lung-metastasis-of-breast-cancer
#7
Fernando Salvador, Alberto Martin, Celia López-Menéndez, Gema Moreno-Bueno, Vanesa Santos, Alberto Vazquez-Naharro, Patricia G Santamaría, Saleta Morales, Pierre Dubus, Laura Muinelo-Romay, Rafael López López, Jason C Tung, Valerie M Weaver, Francisco Portillo, Amparo Cano
The lysyl oxidase-like protein LOXL2 has been suggested to contribute to tumor progression and metastasis, but in vivo evidence has been lacking. Here we provide functional evidence that LOXL2 is a key driver of breast cancer metastasis in two conditional transgenic mouse models of PyMT-induced breast cancer. LOXL2 ablation in mammary tumor cells dramatically decreased lung metastasis, whereas LOXL2 overexpression promoted metastatic tumor growth. LOXL2 depletion or overexpression in tumor cells does not affect extracellular matrix stiffness or organization in primary and metastatic tumors, implying a function for LOXL2 independent of its conventional role in extracellular matrix remodeling...
July 18, 2017: Cancer Research
https://www.readbyqxmd.com/read/28717943/a-pyrrole-based-natural-small-molecule-mitigates-hsp90-expression-in-mda-mb-231-cells-and-inhibits-tumor-angiogenesis-in-mice-by-inactivating-hsf-1
#8
K C Rashmi, H S Atreya, M Harsha Raj, Bharathi P Salimath, H S Aparna
Heat shock proteins (HSPs), molecular chaperones, are crucial for the cancer cells to facilitate proper functioning of various oncoproteins involved in cell survival, proliferation, migration, and tumor angiogenesis. Tumor cells are said to be "addicted" to HSPs. HSPs are overexpressed in many cancers due to upregulation of transcription factor Heat-shock factor 1 (HSF-1), the multifaceted master regulator of heat shock response. Therefore, pharmacological targeting of HSPs via HSF-1 is an effective strategy to treat malignant cancers like triple negative breast cancer...
July 17, 2017: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/28713912/progesterone-suppresses-triple-negative-breast-cancer-growth-and-metastasis-to-the-brain-via-membrane-progesterone-receptor%C3%A2-%C3%AE
#9
Li Zhou, Wei Zhou, Hongwei Zhang, Yan Hu, Lei Yu, Yufei Zhang, Yanli Zhang, Shuang Wang, Peng Wang, Wei Xia
Progesterone plays an important role in mammary epithelial cell proliferation and differentiation. Evidence from experimental and clinical studies indicates that progesterone is a risk factor for breast cancer under certain conditions through binding nuclear progesterone receptor (PR). These mechanisms, however, are not applicable to triple-negative breast cancer (TNBC) due to the lack of PR in these cancers. In this study, we demonstrate that membrane progesterone receptor α (mPRα) is expressed in TNBC tissues and the expression level of mPRα is negatively associated with the TNM stage...
July 7, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28709970/selective-effects-of-whey-protein-concentrate-on-glutathione-levels-and-apoptosis-in-rats-with-mammary-tumors
#10
Shih-Hsuan Cheng, Yang-Ming Tseng, Szu-Hsien Wu, Shih-Meng Tsai, Li-Yu Tsai
Glutathione (GSH) plays an important role in antioxidant defense and regulation of apoptosis. GSH deficiency is related to many diseases, including cancer, and increased GSH levels in cancer cells are associated with chemotherapy resistance because of resistance to apoptosis. In this study, we investigated the effects of whey protein concentrate (WPC), a precursor of GSH, in rats with mammary tumors induced by treatment with 7,12-dimethylbenz(a)anthracene (DMBA). DMBA treatment results in cellular changes that mimic the initiation and promotion of carcinogenesis of breast tissue...
July 11, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28708091/trail-wnt-sonic-hedgehog-tgf%C3%AE-and-mirna-signalings-are-potential-targets-for-oral-cancer-therapy
#11
REVIEW
Ammad Ahmad Farooqi, Chih-Wen Shu, Hurng-Wern Huang, Hui-Ru Wang, Yung-Ting Chang, Sundas Fayyaz, Shyng-Shiou F Yuan, Jen-Yang Tang, Hsueh-Wei Chang
Clinical studies and cancer cell models emphasize the importance of targeting therapies for oral cancer. The tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is highly expressed in cancer, and is a selective killing ligand for oral cancer. Signaling proteins in the wingless-type mouse mammary tumor virus (MMTV) integration site family (Wnt), Sonic hedgehog (SHH), and transforming growth factor β (TGFβ) pathways may regulate cell proliferation, migration, and apoptosis. Accordingly, the genes encoding these signaling proteins are potential targets for oral cancer therapy...
July 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28705719/prevalence-of-ebv-hpv-and-mmtv-in-pakistani-breast-cancer-patients-a-possible-etiological-role-of-viruses-in-breast-cancer
#12
Wasifa Naushad, Orooj Surriya, Hajra Sadia
BACKGROUND: Breast cancer being a multifactorial disease, the role of infectious agent in development of disease is of great interest. The high incidence of breast cancer around the world has woken the interest in a viral etiology of breast cancer. Despite decades of research, no etiologic factor(s) for human breast cancer has been known and the quest for a contributing cause has all but been abandoned during the past years. Recent investigations have linked breast cancer to viral infections, such as Epstein-Barr virus (EBV), Human papillomavirus (HPV) and mouse mammary tumor virus...
July 10, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28704522/assessment-of-gut-microbiota-populations-in-lean-and-obese-zucker-rats
#13
Reza Hakkak, Soheila Korourian, Steven L Foley, Bruce D Erickson
Obesity has been on the rise in the US and worldwide for the last several decades. Obesity has been associated with chronic disease development, such as certain types of cancer, type 2 diabetes, cardiovascular disease, and liver diseases. Previously, we reported that obesity promotes DMBA-induced mammary tumor development using the obese Zucker rat model. The intestinal microbiota is composed of a diverse population of obligate and facultative anaerobic microorganisms, and these organisms carry out a broad range of metabolic activities...
2017: PloS One
https://www.readbyqxmd.com/read/28701332/circulating-rankl-and-rankl-opg-and-breast-cancer-risk-by-er-and-pr-subtype-results-from-the-epic-cohort
#14
Danja Sarink, Helena Schock, Theron Johnson, Kim Overvad, Marianne Holm, Anne Tjonneland, Marie-Christine Boutron-Ruault, Mathilde His, Marina Kvaskoff, Heiner Boeing, Pagona Lagiou, Eleni-Maria Papatesta, Antonia Trichopoulou, Domenico Palli, Valeria Pala, Amalia Mattiello, Rosario Tumino, Carlotta Sacerdote, H B As Bueno-de-Mesquita, Carla H van Gils, Petra H Peeters, Elisabete Weiderpass, Antonio Agudo, Maria-Jose Sanchez, Maria-Dolores Chirlaque, Eva Ardanaz, Pilar Amiano, Kay-Tee Khaw, Ruth C Travis, Laure Dossus, Marc J Gunter, Sabina Rinaldi, Melissa A Merritt, Elio Riboli, Rudolf Kaaks, Renee T Fortner
Receptor activator of nuclear factor kappa-B (RANK)-RANK ligand (RANKL) signaling promotes mammary tumor development in experimental models. Circulating concentrations of soluble RANKL (sRANKL) may influence breast cancer risk via activation of RANK signaling; this may be modulated by osteoprotegerin (OPG), the decoy receptor for RANKL. sRANKL and breast cancer risk by hormone receptor subtype has not previously been investigated. <p>A case-control study was nested in the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort...
July 12, 2017: Cancer Prevention Research
https://www.readbyqxmd.com/read/28700899/pegylated-liposomal-formulation-of-doxorubicin-overcomes-drug-resistance-in-a-genetically-engineered-mouse-model-of-breast-cancer
#15
András Füredi, Kornélia Szebényi, Szilárd Tóth, Mihály Cserepes, Lilla Hámori, Veronika Nagy, Edina Karai, Péter Vajdovich, Tímea Imre, Pál Szabó, Dávid Szüts, József Tóvári, Gergely Szakács
Success of cancer treatment is often hampered by the emergence of multidrug resistance (MDR) mediated by P-glycoprotein (ABCB1/Pgp). Doxorubicin (DOX) is recognized by Pgp and therefore it can induce therapy resistance in breast cancer patients. In this study our aim was to evaluate the susceptibility of the pegylated liposomal formulation of doxorubicin (PLD/Doxil®/Caelyx®) to MDR. We show that cells selected to be resistant to DOX are cross-resistant to PLD and PLD is also ineffective in an allograft model of doxorubicin-resistant mouse B-cell leukemia...
July 9, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28698625/ectodysplasin-target-gene-fgf20-regulates-mammary-bud-growth-and-ductal-invasion-and-branching-during-puberty
#16
Teresa Elo, Päivi H Lindfors, Qiang Lan, Maria Voutilainen, Ewelina Trela, Claes Ohlsson, Sung-Ho Huh, David M Ornitz, Matti Poutanen, Beatrice A Howard, Marja L Mikkola
Mammary gland development begins with the appearance of epithelial placodes that invaginate, sprout, and branch to form small arborized trees by birth. The second phase of ductal growth and branching is driven by the highly invasive structures called terminal end buds (TEBs) that form at ductal tips at the onset of puberty. Ectodysplasin (Eda), a tumor necrosis factor-like ligand, is essential for the development of skin appendages including the breast. In mice, Eda regulates mammary placode formation and branching morphogenesis, but the underlying molecular mechanisms are poorly understood...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28693187/salinomycin-inhibits-canine-mammary-carcinoma-in-vitro-by-targeting-cancer-stem-cells
#17
Hongchao Du, Bin Zhou, Hong Zhang, Yipeng Jin, Di Zhang, Degui Lin
Salinomycin (SAL), a polyether ionophore antibiotic, has been demonstrated to selectively kill cancer stem cells (CSCs) in various types of human tumor. The aim of the present study was to investigate the effects of SAL on canine mammary CSCs. CSCs in canine mammary carcinoma cell lines (CMT7364 and CIPp) were identified using a sphere formation assay and flow cytometry. The chemoresistance, invasive potential and expression of stem cell-associated proteins of these spheres was then analyzed. This demonstrated that the spheres exhibited characteristics of CSCs, including a cluster of differentiation (CD)44(+)/CD24(-/low) phenotype, upregulation of Wnt/β-catenin signaling pathway-associated proteins and chemoresistance...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28693009/a-review-of-the-use-of-fine-needle-aspiration-biopsy-of-mammary-tumors-for-diagnosis-and-research
#18
Edneia Tani, Nelson Fuentes-Martinez, Lambert Skoog
The article "Aspiration Biopsy of Mammary Tumors in Diagnosis and Research - A Critical Review of 2,200 Cases" by Zajicek et al. [Acta Cytol 1967;11:169-175] is composed of two separate parts as can be seen from the title. Both are, however, of great historical interest. The first describes the early days of fine-needle aspiration cytology diagnosis of breast lesions in particular carcinomas. The results are still impressive with a diagnostic accuracy close to 90%. The second deals with the effect of negative pressure on cell viability during the aspiration procedure...
July 11, 2017: Acta Cytologica
https://www.readbyqxmd.com/read/28690853/significantly-enhanced-lung-metastasis-and-reduced-organ-nk-cell-functions-in-diet-induced-obese-rats
#19
J Spielmann, J Hanke, D Knauf, S Ben-Eliyahu, R Jacobs, G I Stangl, I Bähr, H Kielstein
BACKGROUND: Obesity was identified as a major risk factor for malignant diseases, but underlying mechanisms remain unclear. Natural killer (NK) cells, a pivotal aspect of innate immunity, are capable of identifying and killing virally infected and tumor cells. Previous studies have shown altered NK cell functions in obesity, and the current study aimed to investigate the relationship between altered NK cell functions and increased cancer risk in obesity. METHODS: To induce obesity male F344-rats received a high-fat diet (34% fat) or a control diet (4% fat)...
2017: BMC Obesity
https://www.readbyqxmd.com/read/28690061/bovine-mir-146a-regulates-inflammatory-cytokines-of-bovine-mammary-epithelial-cells-via-targeting-the-traf6-gene
#20
Xing-Ping Wang, Zhuo-Ma Luoreng, Lin-Sen Zan, Feng Li, Na Li
It has been reported previously that bovine miR-146a (bta-miR-146a) is significantly differentially expressed in mammary glands infected with mastitis, compared with healthy udders. This suggests that bta-miR-146a plays an important role in the regulation of mammary inflammation. However, the specifics of this function have yet to be elucidated. Bovine mammary epithelial cells (bMEC) represent the first line of defense against pathogens and have important roles in initiating and regulating inflammatory responses and innate immunity during infection...
July 6, 2017: Journal of Dairy Science
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