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Progesterone receptor breast cancer

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https://www.readbyqxmd.com/read/29345201/clinical-validation-of-nuclear-factor-kappa-b-expression-in-invasive-breast-cancer
#1
Anil Kumar Agrawal, Ewa Pielka, Artur Lipinski, Michal Jelen, Wojciech Kielan, Siddarth Agrawal
Breast cancer is the most commonly diagnosed cancer in Polish women. The expression of transcription nuclear factor kappa B, a key inducer of inflammatory response promoting carcinogenesis and cancer progression in breast cancer, is not well-established. We assessed the nuclear factor kappa B expression in a total of 119 invasive breast carcinomas and 25 healthy control samples and correlated this expression pattern with several clinical and pathologic parameters including histologic type and grade, tumor size, lymph node status, estrogen receptor status, and progesterone receptor status...
January 2018: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/29344162/effects-of-rat-bone-marrow-derived-mesenchymal-stem-cells-on-breast-cancer-cells-with-differing-hormone-receptor-status
#2
Ying Wang, Shan Shao, Minna Luo, Shangke Huang, Lu Feng, Na Yuan, Fang Wu, Chengxue Dang, Xinhan Zhao
Breast cancer is a heterogeneous disease that can be classified into several molecular intrinsic subtypes according to hormone markers, including estrogen receptor, progesterone receptor and human epidermal growth factor receptor-2. Breast cancer cases with different hormone status vary with respect to patient morbidity, metastasis organotropism and disease progression. It is well known that the most preferential relapse site of breast cancer is in the bone, but the metastatic incidence is markedly higher in hormone receptor-positive cancer compared with that in hormone receptor-negative cancers...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29339455/high-n-acetyltransferase-1-nat1-expression-is-associated-with-estrogen-receptor-expression-in-breast-tumors-but-is-not-under-direct-regulation-by-estradiol-17beta-diol-or-dihydrotestosterone-in-breast-cancer-cells
#3
Xiaoyan Zhang, Samantha M Carlisle, Mark A Doll, Robert C G Martin, J Christopher States, Carolyn M Klinge, David W Hein
N-acetyltransferase 1 (NAT1) is an enzyme which metabolizes carcinogens suggesting a potential role in breast carcinogenesis. High NAT1 expression in breast tumors is associated with estrogen receptor α (ERα+) and the luminal subtype. We report that NAT1 mRNA transcript, protein, and enzyme activity were higher in human breast tumors with high expression of ERα/ESR1 compared to normal breast tissue. There was a strong correlation between NATb promoter and NAT1 protein expression/enzyme activity. High NAT1 expression in tumors was not due to adipocytes as evidenced by low PLIN expression...
January 16, 2018: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/29333017/correlation-of-hormone-receptor-and-human-epidermal-growth-factor-receptor-2-neu-expression-in-breast-cancer-with-various-clinicopathologic-factors
#4
Cherry Bansal, Aarti Sharma, Mukta Pujani, Meenu Pujani, Kiran Lata Sharma, A N Srivastava, U S Singh
Background: A significant development in the breast carcinoma management is the correlation between the presence of hormone receptors in the tumor and response to hormonal therapy and chemotherapy. Human epidermal growth factor receptor-2/neu (Her-2/neu) overexpression also serves as a very useful parameter to predict response to herceptin. Aim of Study: The study was conducted to correlate immunohistochemical expression of markers such as estrogen receptor (ER), progesterone receptor (PR), and Her-2/neu with various clinicopathologic parameters...
October 2017: Indian Journal of Medical and Paediatric Oncology
https://www.readbyqxmd.com/read/29332343/clinical-relevance-of-telomerase-polymorphism-for-breast-cancer-a-systematic-review
#5
Katherine de Souza Rodrigues, Joao Nunes de Matos Neto, Rodrigo Haddad, Diego Madureira de Oliveira
PURPOSE: To perform a systematic review to explore the clinical relevance of hTERT polymorphisms for breast cancer (BC). METHODS: Twenty-nine polymorphic regions were evaluated after comprehensive searching of 1236 articles, and selection of 9 publications (total of 12986 cases and 16758 controls). RESULTS: About the influence of hTERT variants in BC risk, 3 studies showed that the variant rs2736098 was associated with increasing risk. The variants rs10069690 and rs2853676 were also described as risk factors for BC...
November 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29330856/reproductive-history-breast-feeding-and-risk-of-triple-negative-breast-cancer-the-breast-cancer-etiology-in-minorities-bem-study
#6
Esther M John, Lisa M Hines, Amanda I Phipps, Jocelyn Koo, Teri A Longacre, Sue A Ingles, Kathy B Baumgartner, Martha L Slattery, Anna H Wu
Few risk factors have been identified for triple negative breast cancer (TNBC) which lacks expression of estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2). This more aggressive subtype disproportionately affects some racial/ethnic minorities and is associated with lower survival. We pooled data from three population-based studies (558 TNBC and 5,111 controls) and examined associations of TNBC risk with reproductive history and breast-feeding. We estimated odds ratios (OR) and 95% confidence intervals (CI) using multivariable logistic regression...
January 13, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29323875/theranostics-of-triple-negative-breast-cancer-based-on-conjugated-polymer-nanoparticles
#7
Guorui Jin, Rongyan He, Qian Liu, Yuqing Dong, Min Lin, Wenfang Li, Feng Xu
Triple negative breast cancer (TNBC) does not respond to many targeted drugs due to the lack of three receptors (i.e., estrogen receptor, progesterone receptor and human epidermal growth factor receptor-2), which makes it difficult for TNBC detection and treatment. As compared to traditional breast cancer treatments such as surgery and chemotherapy, photodynamic therapy (PDT) has emerged as a promising approach for treating TNBC due to its precise controllability, high spatiotemporal accuracy and minimal invasive nature...
January 11, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29323210/anticancer-potentiality-of-lignan-rich-fraction-of-six-flaxseed-cultivars
#8
Shahira M Ezzat, Samia A Shouman, Abeer Elkhoely, Yasmin M Attia, Mohamed S Elsesy, Amira S El Senousy, Mouchira A Choucry, Sabah H El Gayed, Abeer A El Sayed, Essam Abdel Sattar, Nebal El Tanbouly
The objective of our study is to highlight the therapeutic effect and mechanism of action by which purified Flaxseed hydrolysate (PFH) which is a lignan rich fraction exerts its anticancer activity on a human breast cancer cell line (T47D) and in mice bearing tumor. HPLC analysis of PFH of six flaxseed cultivars had shown that PFH of the cultivar Giza 9 (PFH-G9) contains the highest concentration of SDG (81.64 mg/g). The in vitro cytotoxic potentiality of PFH's of six flaxseed cultivars was screened against a panel of human cancer cell lines...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29323058/assessment-of-topoisomerase-ii-alpha-gene-status-by-dual-color-chromogenic-in-situ-hybridization-in-a-set-of-iraqi-patients-with-invasive-breast-carcinoma
#9
Rasha Abd Alraouf Neama, Manal A Habib, Sahira A Ali, Ali H Al-Khafaji, Mohammed F Alqanbar
BACKGROUND: The human epidermal growth factor receptor 2(HER2) proto-oncogene is overexpressed or amplified in approximately 15%-25% of invasive breast cancers. Approximately 35% of HER2-amplified breast cancers have coamplification of the topoisomerase II-alpha (TOP2A) gene encoding an enzyme that is a major target of anthracyclines. Hence, the determination of genetic alteration (amplification or deletion) of both genes is considered as an important predictive factor that determines the response of breast cancer patients to treatment...
October 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29319143/prognostic-factors-of-breast-cancer-survival-in-the-islamic-republic-of-iran-an-additive-empirical-bayesian-approach
#10
Samane Nematolahi, Abbas Rezaianzadeh, Najaf Zare, Majid Akrami, Sedighe Tahmasebi
Breast cancer is a public health challenge in the Islamic Republic of Iran. Relatively few studies have dealt with large dataset and advanced statistical methods. Therefore, we aimed to investigate the role of prognostic factors on breast cancer survival using Additive Empirical Bayesian model with large data set. Breast cancer data set included 1574 women diagnosed with breast cancer from 2002 to 2012 that registered from Cancer Registry in Fars Province, Islamic Republic of Iran. Overall survival rates at 2, 3, 5 and 10 years were 0...
January 2, 2018: Eastern Mediterranean Health Journal, la Revue de Santé de la Méditerranée Orientale
https://www.readbyqxmd.com/read/29317254/revisiting-progesterone-receptor-pr-actions-in-breast-cancer-insights-into-pr-repressive-functions
#11
Cecilia J Proietti, Mauro E Cenciarini, Patricia V Elizalde
Progesterone receptor (PR) is a master regulator in female reproductive tissues that controls developmental processes and proliferation and differentiation during the reproductive cycle and pregnancy. PR also plays a role in progression of endocrine-dependent breast cancer. As a member of the nuclear receptor family of ligand-dependent transcription factors, the main action of PR is to regulate networks of target gene expression in response to binding its cognate steroid hormone, progesterone. Liganded-PR transcriptional activation has been thoroughly studied and associated mechanisms have been described while progesterone-mediated repression has remained less explored...
January 6, 2018: Steroids
https://www.readbyqxmd.com/read/29315564/circulating-anti-m%C3%A3-llerian-hormone-and-breast-cancer-risk-a-study-in-ten-prospective-cohorts
#12
Wenzhen Ge, Tess V Clendenen, Yelena Afanasyeva, Karen L Koenig, Claudia Agnoli, Louise A Brinton, Joanne F Dorgan, A Heather Eliassen, Roni T Falk, Göran Hallmans, Susan E Hankinson, Judith Hoffman-Bolton, Timothy J Key, Vittorio Krogh, Hazel B Nichols, Dale P Sandler, Minouk J Schoemaker, Patrick M Sluss, Malin Sund, Anthony J Swerdlow, Kala Visvanathan, Mengling Liu, Anne Zeleniuch-Jacquotte
A strong positive association has been observed between circulating anti-Müllerian hormone (AMH), a biomarker of ovarian reserve, and breast cancer risk in three prospective studies. Confirming this association is important because of the paucity of biomarkers of breast cancer risk in premenopausal women. We conducted a consortium study including ten prospective cohorts that had collected blood from premenopausal women. A nested case-control design was implemented within each cohort. A total of 2,835 invasive (80%) and in situ (20%) breast cancer cases were individually matched to controls (n = 3,122) on age at blood donation...
January 8, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29315431/receptor-conversion-in-distant-breast-cancer-metastases-a-systematic-review-and-meta-analysis
#13
Willemijne A M E Schrijver, Karijn P M Suijkerbuijk, Carla H van Gils, Elsken van der Wall, Cathy B Moelans, Paul J van Diest
Background: In metastatic breast cancer, hormone and/or human epidermal growth factor receptor 2 (HER2)-targeted therapy decision-making is still largely based on tissue characteristics of the primary tumor. However, a change of estrogen receptor alpha (ERα), progesterone receptor (PR), and HER2 status in distant metastases has frequently been reported. The actual incidence of this phenomenon has been debated. Methods: We performed a meta-analysis including 39 studies assessing receptor conversion from primary breast tumors to paired distant breast cancer metastases...
January 5, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29306324/stromal-cd10-expression-in-breast-cancer-correlates-with-tumor-invasion-and-cancer-stem-cell-phenotype
#14
Tahani Louhichi, Hanene Saad, Myriam Ben Dhiab, Sonia Ziadi, Mounir Trimeche
BACKGROUND: Previous investigations have indicated that CD10 is associated with biological aggressivity in human cancers, but the use of this marker for diagnosis and prognosis is more complex. The aim of this study was to evaluate the expression of CD10 in breast cancer and its association with the clinicopathological features. In addition, we investigated whether a relationship exists between CD10 expression and cancer stem cells. METHODS: CD10 expression was examined by the immunohistochemistry in a series of 133 invasive breast carcinoma cases...
January 6, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29304138/the-use-of-automated-ki67-analysis-to-predict-oncotype-dx-risk-of-recurrence-categories-in-early-stage-breast-cancer
#15
Satbir Singh Thakur, Haocheng Li, Angela M Y Chan, Roxana Tudor, Gilbert Bigras, Don Morris, Emeka K Enwere, Hua Yang
Ki67 is a commonly used marker of cancer cell proliferation, and has significant prognostic value in breast cancer. In spite of its clinical importance, assessment of Ki67 remains a challenge, as current manual scoring methods have high inter- and intra-user variability. A major reason for this variability is selection bias, in that different observers will score different regions of the same tumor. Here, we developed an automated Ki67 scoring method that eliminates selection bias, by using whole-slide analysis to identify and score the tumor regions with the highest proliferative rates...
2018: PloS One
https://www.readbyqxmd.com/read/29302853/progesterone-receptor-pgr-gene-variants-associated-with-breast-cancer-and-associated-features-a-case-control-study
#16
Rabeb M Ghali, Maryam A Al-Mutawa, Bashayer H Ebrahim, Hanen H Jrah, Sonia Zaied, Hanen Bhiri, Fahmi Hmila, Touhami Mahjoub, Wassim Y Almawi
Insofar as altered estrogen receptor-progesterone receptor (PR) expression contribute to breast cancer pathogenesis, previous studies examined the association of genetic variation in PR gene (PGR) with breast cancer, but with mixed outcome. We evaluated the association between PGR variants, and breast cancer and associated features. A retrospective case-control study involving 183 female breast cancer patients, and 222 control women. PGR genotyping was done by real-time PCR. Minor allele frequencies of rs1042838, rs590688, and rs10895068 PGR gene polymorphisms were significantly higher in breast cancer patients compared to controls...
January 4, 2018: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/29301281/sumoylation-regulates-transcription-by-the-progesterone-receptor-a-isoform-in-a-target-gene-selective-manner
#17
Hany A Abdel-Hafiz, Michelle L Dudevoir, Daniel Perez, Mohamed Abdel-Hafiz, Kathryn B Horwitz
Luminal breast cancers express estrogen (ER) and progesterone (PR) receptors, and respond to endocrine therapies. However, some ER+PR+ tumors display intrinsic or acquired resistance, possibly related to PR. Two PR isoforms, PR-A and PR-B, regulate distinct gene subsets that may differentially influence tumor fate. A high PR-A:PR-B ratio is associated with poor prognosis and tamoxifen resistance. We speculate that excessive PR-A marks tumors that will relapse early. Here we address mechanisms by which PR-A regulate transcription, focusing on SUMOylation...
January 2, 2018: Diseases (Basel)
https://www.readbyqxmd.com/read/29300901/aromatase-inhibitor-use-during-ovarian-stimulation-suppresses-growth-of-uterine-endometrial-cancer-in-xenograft-mouse-model
#18
Tai Kawahara, Naoki Okamoto, Seido Takae, Megumi Kashiwagi, Mariko Nakajima, Atsushi Uekawa, Junya Ito, Naomi Kashiwazaki, Yodo Sugishita, Nao Suzuki
STUDY QUESTION: Could aromatase inhibitors (AI) be used to reduce risks of uterine endometrial cancer growth or recurrence during ovarian stimulation? SUMMARY ANSWER: In a xenograft mouse model of endometrial cancer, concomitant AI administration suppressed the growth of endometrial cancer during ovarian stimulation. WHAT IS KNOWN ALREADY: Recurrence and mortality rates of estrogen receptor-positive early breast cancer are reduced by long-term AI administration...
December 28, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29298285/the-relationship-between-breast-cancer-treatment-tumour-type-and-vitamin-d-level-in-pre-and-postmenopausal-women
#19
Joanna Streb, Izabela Glanowska, Anna Streb, Joanna Szpor, Koleta Kryka, Paweł Potocki, Małgorzata Wójcik, Robert Jach
OBJECTIVE: Vitamin D deficiency has been linked to a higher risk of cancer. There is insufficient data regarding the influence of treatment on vitamin D status. The aim of this study was to compare pre- and post-treatment levels of 25(OH)D in premenopausal and postmenopausal women with breast cancer with a different receptor status (ER-estrogen receptors, PR-progesterone receptors) and in healthy controls. METHODS: 49 patients with breast cancer (23 premenopausal), and 28 healthy controls matched for age, menopausal status and BMI...
December 4, 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/29291541/her-2-positive-mucinous-carcinoma-breast-cancer-case-report
#20
Irean Garcia Hernandez, Mauricio Canavati Marcos, Margarita Garza Montemayor, Dulce Lopez Sotomayor, Diana Pineda Ochoa, Gabriela Sofia Gomez Macias
INTRODUCTION: Mucinous carcinoma is a variant of invasive breast carcinomas that accounts for 2% of them and has a better prognosis in contrast to the non-specific invasive carcinoma. They regularly are positive for estrogen and progesterone receptors and, generally, they do not overexpress HER2. When HER2 is positive, the first line treatment is trastuzumab; although the resistance is 52-89% for the non-specific carcinoma, it has been described just once in mucinous carcinoma. CASE SUMMARY: A 48-year-old female presented with a lump in her right breast and after a biopsy, it was diagnosed as mucinous carcinoma in the core biopsy and surgical resection, with positive hormone receptors and HER2 positive (3+) in 100% of the tumor cells...
December 26, 2017: International Journal of Surgery Case Reports
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