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Breast Cancer: Targets and Therapy

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https://www.readbyqxmd.com/read/28652811/structure-based-virtual-screening-and-molecular-docking-for-the-identification-of-potential-multi-targeted-inhibitors-against-breast-cancer
#1
Zeeshan Yousuf, Kanzal Iman, Nauman Iftikhar, Muhammad Usman Mirza
Breast cancer is characterized by an uncontrolled growth of cells in breast tissue. Genes that foster cell growth in breast cells are overexpressed, giving rise to breast tumors. The identification of effective inhibitors represents a rational chemopreventive strategy. The current in silico study provides a pharmacoinformatic approach for the identification of active compounds against a co-chaperone HSP90 and the human epidermal growth factor receptors EGFR and HER2/neu receptor. The elevated levels of expression of these target proteins have been documented in breast cancer...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28652810/an-effective-deep-inspiration-breath-hold-radiotherapy-technique-for-left-breast-cancer-impact-of-post-mastectomy-treatment-nodal-coverage-and-dose-schedule-on-organs-at-risk
#2
Lynsey Rice, Christy Goldsmith, Melanie Ml Green, Susan Cleator, Patricia M Price
BACKGROUND: We developed, applied, and prospectively evaluated a novel deep-inspiration breath-hold (DIBH) screening and delivery technique to optimize cardiac sparing in left-breast radiotherapy (RT) at our clinic. The impact of set-up and dose variables upon organs at risk (OAR) dose in DIBH RT was investigated. METHODS AND MATERIALS: All patients with left-breast cancer referred between 2011 and 2014 - of all disease stages, set-up variations, and dose prescriptions - were included...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28615972/single-nucleotide-polymorphisms-and-unacceptable-late-toxicity-in-breast-cancer-adjuvant-radiotherapy-a-case-report
#3
Grazia Lazzari, Maria Iole Natalicchio, Angela Terlizzi, Francesco Perri, Giovanni Silvano
BACKGROUND: There has recently been a strong interest in the inter-individual variation in normal tissue and tumor response to radiotherapy (RT), because tissue radiosensitivity seems to be under genetic control. Evidence is accumulating on the role of polymorphic genetic variants, such as single nucleotide polymorphisms (SNPs) that could influence normal tissue response after radiation. The most studied SNPs include those in genes involved in DNA repair (single- and double-strand breaks, and base excision) and those active in the response to oxidative stress...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28615971/clinical-use-of-the-oncotype-dx-genomic-test-to-guide-treatment-decisions-for-patients-with-invasive-breast-cancer
#4
REVIEW
Terri P McVeigh, Michael J Kerin
Implementation of the Oncotype DX assay has led to a change in the manner in which chemotherapy is utilized in patients with early stage, estrogen receptor (ER)-positive, node-negative breast cancer; ensuring that patients at highest risk of recurrence are prescribed systemic treatment, while at the same time sparing low-risk patients potential adverse events from therapy unlikely to influence their survival. This test generates a recurrence score between 0 and 100, which correlates with probability of distant disease recurrence...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28615970/changes-in-pulmonary-function-tests-in-breast-carcinoma-patients-treated-with-locoregional-post-mastectomy-radiotherapy-results-of-a-pilot-study
#5
Eyad Fawzi AlSaeed, Faisal Khalid Balaraj, Mutahir A Tunio
BACKGROUND: The aim of present pilot study was to evaluate the changes in pulmonary function tests (PFTs) after locoregional post-mastectomy radiotherapy (PMRT) in breast cancer patients. MATERIALS AND METHODS: Twenty consecutive patients with histopathologically confirmed breast carcinoma stages T1-T4, N1-N2, who were treated with modified radical mastectomy with neoadjuvant or adjuvant chemotherapy underwent PFTs, including forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1), forced expiratory flow at 50%, and peak expiratory flow rate, maximum mid expiratory flow (MMEF25-75), maximal oxygen consumption (VO2max), and carbon monoxide diffusing capacity (DLCO) before, at 30 days, and at 90 days after locoregional PMRT...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28579831/the-regulation-of-steroid-receptors-by-epigallocatechin-3-gallate-in-breast-cancer-cells
#6
Kelly Hallman, Katie Aleck, Meghan Quigley, Brigitte Dwyer, Victoria Lloyd, Monica Szmyd, Sumi Dinda
It has been reported that phytoestrogen epigallocatechin gallate (EGCG) suppresses cancer cell proliferation and may have antitumor properties. In this study, we analyzed the effects of EGCG on estrogen receptor α (ERα) and progesterone receptor in hormone-dependent T-47D breast cancer cells. Western blot analysis revealed EGCG induced a concentration-dependent decrease in ERα protein levels, with a 56% reduction occurring with 60 µM EGCG when compared to controls. Downregulation of ERα protein levels was observed after 24-hour co-treatment of T-47D cells with 60 µM EGCG and 10 nM 17β-estradiol (E2)...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28579830/effect-of-reduced-dietary-fat-on-estradiol-adiponectin-and-igf-1-levels-in-postmenopausal-women-with-breast-cancer
#7
Blanca Murillo-Ortiz, Sandra Martínez-Garza, Vanessa Cárdenas Landeros, Gerardo Cano Velázquez, David Suárez García
INTRODUCTION: In recent years, epidemiological studies have strongly related obesity with an increased risk of developing postmenopausal breast cancer. The aromatization of fatty tissue increases the levels of estradiol and adiponectin, which is correlated with the body mass index (BMI). It is of interest to investigate the effect of reducing BMI on estradiol, adiponectin, and IGF-1, as reducing BMI could be a new strategy to limit the risk of recurrence during the adjuvant treatment of breast cancer...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28579829/natural-and-synthetic-progestins-enrich-cancer-stem-cell-like-cells-in-hormone-responsive-human-breast-cancer-cell-populations-in-vitro
#8
Sandy Goyette, Yayun Liang, Benford Mafuvadze, Matthew T Cook, Moiz Munir, Salman M Hyder
Clinical trials and studies have shown that combination estrogen/progestin hormone replacement therapy, but not estrogen therapy alone or placebo, increases breast cancer risk in postmenopausal women. Using animal models, we have previously shown that both natural and synthetic progestins (including medroxyprogesterone acetate [MPA], a synthetic progestin used widely in the clinical setting) accelerate the development of breast tumors in vivo and increase their metastasis to lymph nodes. Based on these observations, we have hypothesized that progestin-induced breast cancer tumor growth and metastasis may be mediated by an enrichment of the cancer stem cell (CSC) pool...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28553141/invasive-lobular-carcinoma-of-the-male-breast-a-systematic-review-with-an-illustrative-case-study
#9
REVIEW
Jenna-Lynn Senger, Scott J Adams, Rani Kanthan
Male breast cancer is rare, comprising only 1% of all mammary cancers; invasive ductal carcinoma is by far the commonest subtype in both men and women. Though lobular breast cancer is the second most common subtype seen in women, such cancers are extremely uncommon in men, and this is likely related to the lack of lobular development in the male breast. Thus, due to the rarity of this subtype among breast cancers, compounded by the overall rarity of breast cancer in men, current understanding of the pathogenesis of this disease and its management is largely derived from case series and extrapolation of information from the larger cohort of female patients...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28553140/current-perspectives-on-chek2-mutations-in-breast-cancer
#10
REVIEW
Panagiotis Apostolou, Ioannis Papasotiriou
Checkpoint kinase 2 (CHEK2) is a serine/threonine kinase which is activated upon DNA damage and is implicated in pathways that govern DNA repair, cell cycle arrest or apoptosis in response to the initial damage. Loss of kinase function has been correlated with different types of cancer, mainly breast cancer. CHEK2 functionality is affected by different missense or deleterious mutations. CHEK2*1100delC and I157T are most studied in populations all over the world. Although these variants have been identified in patients with breast cancer, their frequency raises doubts about their importance as risk factors...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28503075/imprint-cytology-versus-frozen-section-analysis-for-intraoperative-assessment-of-sentinel-lymph-node-in-breast-cancer
#11
Thalia Petropoulou, Antonia Kapoula, Aikaterini Mastoraki, Aikaterini Politi, Eleni Spanidou-Karvouni, Ioannis Psychogios, Ioannis Vassiliou, Nikolaos Arkadopoulos
INTRODUCTION: Sentinel lymph node (SLN) biopsy is the gold standard for surgical staging of the axilla in breast cancer (BC). Frozen section (FS) remains the most popular means of intraoperative SLN diagnosis. Imprint cytology (IC) has also been suggested as a less expensive and equally accurate alternative to FS. The aim of our study was to perform a direct comparison between IC and FS on the same SLNs of BC cases operated in a single center by the same surgical team. MATERIALS AND METHODS: Into this prospective study we enrolled 60 consecutive patients with histologically proven T1-T3 BC and clinically negative axilla...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28503074/acute-radiation-dermatitis-in-breast-cancer-patients-challenges-and-solutions
#12
REVIEW
Adam J Kole, Lauren Kole, Meena S Moran
Nearly all women who receive radiotherapy (RT) for breast cancer experience some degree of radiation dermatitis. However, evidence describing the appropriate management of radiation dermatitis is often lacking or contradictory. Here, we summarize the available literature regarding radiation dermatitis causes, the presentation and timing of symptoms, methods for dermatitis assessment and prevention, and review evidence-based management strategies.
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28496363/prognostic-value-of-histone-chaperone-fact-subunits-expression-in-breast-cancer
#13
Kristopher Attwood, Daria Fleyshman, Laura Prendergast, Geraldine Paszkiewicz, Angela R Omilian, Wiam Bshara, Katerina Gurova
Understanding the underlying reasons for tumor aggressiveness, such as why some tumors grow slowly and locally, while others rapidly progress to a lethal metastatic disease, is still limited. This is especially critical in breast cancer (BrCa) due to its high prevalence and also due to the possibility that it can be detected early. Several oncogenes and tumor suppressors have been identified and are used in the prognosis and treatment of BrCa. However, even with these markers, the outcome within BrCa subtypes is highly variable...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28496362/metaplastic-breast-carcinoma-with-upper-limb-gangrene
#14
Reynu Rajan, Norlia Abdullah, Nik Muhd Aslan Abdullah, Abdul Yazid Mohd Kassim
Metaplastic breast carcinomas (MBCs) are rapidly growing tumors with histological heterogeneity, and triple negative receptor status. The aim of this case report is to highlight a case of advanced MBC with axillary artery infiltration leading to gangrene of the ipsilateral upper limb, in a young woman.
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28496361/improved-immediate-breast-reconstruction-as-a-result-of-oncoplastic-multidisciplinary-meeting
#15
Mohsen M El Gammal, Maria Lim, Rajan Uppal, Richard Sainsbury
INTRODUCTION: The National Institute for Health and Clinical Excellence guidelines recommend that breast reconstruction should be available to all women undergoing mastectomy and discussed at the initial surgical consultation (2002, and updated 2009). The National Mastectomy and Breast Reconstruction Audit (2009) showed that 21% of mastectomy patients underwent immediate breast reconstruction (IBR) and 11% had delayed breast reconstruction (DBR). Breast reconstruction has been shown to have a positive effect on quality of life postmastectomy...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28490901/breast-cancer-and-amyloid-bodies-is-there-a-role-for-amyloidosis-in-cancer-cell-dormancy
#16
Gerald J Mizejewski
Breast cancer and Alzheimer's disease (AD) are major causes of death in older women. Interestingly, breast cancer occurs less frequently in AD patients than in the general population. Amyloidosis, the aggregation of amyloid proteins to form amyloid bodies, plays a central role in the pathogenesis of AD and other human neuropathies by forming intracellular fibrillary proteins. Contrary to popular belief, amyloidosis is a common occurrence in mammalian cells, and has recently been reported to be a natural physiological process in response to environmental stress stimulations (such as pH and temperature extremes, hypoxia, and oxidative stress)...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28458580/lymphoscintigraphy-detecting-alterations-of-upper-limb-lymphatic-flow-following-early-sentinel-lymph-node-biopsy-in-breast-cancer
#17
Almir Jose Sarri, Eduardo Tinois da Silva, Rene Aloisio da Costa Vieira, Katia Hiromoto Koga, Pedro Henrique Moriguchi Cação, Vitor Coca Sarri, Sonia Marta Moriguchi
PURPOSE: To evaluate early variations in lymphatic circulation of the arm pre- and post-sentinel lymph node biopsy (SLNB) and conservative breast surgery by lymphoscintigraphy (LS). PATIENTS AND METHODS: Between 2005 and 2012, 15 patients underwent LS before and after the SLNB (total=30 studies). The pre-SLNB study was considered the control. Early images within twenty minutes (dynamic and static images) and delayed images within ninety minutes of arms and armpits were acquired using a gamma camera...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28458579/mentha-arvensis-linn-mediated-green-silver-nanoparticles-trigger-caspase-9-dependent-cell-death-in-mcf7-and-mda-mb-231-cells
#18
Prajna Paramita Banerjee, Arindam Bandyopadhyay, Singapura Nagesh Harsha, Rudragoud S Policegoudra, Shelley Bhattacharya, Niranjan Karak, Ansuman Chattopadhyay
INTRODUCTION: Leaf extract of Mentha arvensis or mint plant was used as reducing agent for the synthesis of green silver nanoparticles (GSNPs) as a cost-effective, eco-friendly process compared to that of chemical synthesis. The existence of nanoparticles was characterized by ultraviolet-visible spectrophotometry, dynamic light scattering, Fourier transform infrared spectroscopy, X-ray diffraction, energy-dispersive X-ray analysis, atomic-force microscopy and transmission electron microscopy analyses, which ascertained the formation of spherical GSNPs with a size range of 3-9 nm...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28458578/intraoperative-radiation-therapy-for-breast-cancer-patients-current-perspectives
#19
REVIEW
Sunil W Dutta, Shayna L Showalter, Timothy N Showalter, Bruce Libby, Daniel M Trifiletti
Accelerated partial breast irradiation (APBI) provides an attractive alternative to whole breast irradiation (WBI) through normal tissue radiation exposure and reduced treatment duration. Intraoperative radiation therapy (IORT) is a form of APBI with the shortest time interval, as it delivers the entirety of a planned radiation course at the time of breast surgery. However, faster is not always better, and IORT has been met with healthy skepticism. Patients treated with IORT have an increased compliance and overall satisfaction when compared to patients treated with WBI...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/28450788/effects-of-cyp2d6-and-cyp3a5-polymorphisms-on-tamoxifen-and-its-metabolites-in-thai-breast-cancer-patients
#20
Wanaporn Charoenchokthavee, Nutthada Areepium, Duangchit Panomvana, Virote Sriuranpong
PURPOSE: This study aimed to determine the effects of CYP2D6 and CYP3A5 polymorphisms on the levels of tamoxifen (TAM) and its metabolites in the plasma of breast cancer patients. The protocol was designed to test the associations between CYP2D6, CYP3A5 genotypes and phenotypes (extensive metabolizer [EM], intermediate metabolizer [IM] and poor metabolizer [PM]) and TAM, N-desmethyl tamoxifen (NDMT), endoxifen (END) and 4-hydroxytamoxifen (4OHT) concentrations. PATIENTS AND METHODS: One hundred and thirty-four Thai breast cancer patients from the Thai Tamoxifen Project undergoing TAM treatment who met the inclusion/exclusion criteria were recruited...
2017: Breast Cancer: Targets and Therapy
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