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https://www.readbyqxmd.com/read/28722677/prognostic-role-of-gli1-expression-in-breast-cancer-a-meta-analysis
#1
Bilan Wang, Ting Yu, Yuzhu Hu, Mengmeng Xiang, Haoning Peng, Yunzhu Lin, Lu Han, Lingli Zhang
Glioma-associated oncogene 1 (Gli1) is a critical transcriptional factor of Sonic hedgehog pathway which has been proved to participate in the initiation and progression of tumor in mammalians. However, its clinical value in breast cancer remains unknown. Thus, a meta-analysis was performed to clarify the association of Gli1 over-expression, clinic-pathological characteristics, molecular subtypes and prognosis in breast cancer. According to included criteria, 13 eligible studies containing 2816 patients all around the world were selected in this study...
July 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28721808/molecular-tests-for-the-choice-of-cancer-therapy
#2
Anna P Sokolenko, Evgeny N Imyanitov
There are over a dozen of approved cancer drugs, whose administration is tailored to predictive laboratory tests. The examples include estrogen and progesterone receptor status determination for the use of endocrine therapy, HER2 assessment for the administration of HER2-targeting agents, EGFR and ALK gene testing for lung cancer treatment, BRAF analysis in melanoma, etc. While first predictive tests relied on relatively easy laboratory procedures, more recent developments require rather sophisticated assays...
July 19, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28720108/early-pregnancy-sex-steroids-during-primiparous-pregnancies-and-maternal-breast-cancer-a-nested-case-control-study-in-the-northern-sweden-maternity-cohort
#3
Renée T Fortner, Eglé Tolockiene, Helena Schock, Husam Oda, Hans-Åke Lakso, Göran Hallmans, Rudolf Kaaks, Paolo Toniolo, Anne Zeleniuch-Jacquotte, Kjell Grankvist, Eva Lundin
BACKGROUND: Pregnancy and parity are associated with subsequent breast cancer risk. Experimental and epidemiologic data suggest a role for pregnancy sex steroid hormones. METHODS: We conducted a nested case-control study in the Northern Sweden Maternity Cohort (1975-2007). Eligible women had provided a blood sample in the first 20 weeks of gestation during a primiparous pregnancy leading to a term delivery. The current study includes 223 cases and 417 matched controls (matching factors: age at and date of blood collection)...
July 18, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28717716/breast-cancer-and-african-ancestry-lessons-learned-at-the-10-year-anniversary-of-the-ghana-michigan-research-partnership-and-international-breast-registry
#4
Evelyn Jiagge, Joseph Kwaku Oppong, Jessica Bensenhaver, Francis Aitpillah, Kofi Gyan, Ishmael Kyei, Ernest Osei-Bonsu, Ernest Adjei, Michael Ohene-Yeboah, Kathy Toy, Karen Eubanks Jackson, Marian Akpaloo, Dorcas Acheampong, Beatrice Antwi, Faustina Obeng Agyeman, Zainab Alhassan, Linda Ahenkorah Fondjo, Osei Owusu-Afriyie, Robert Newman Brewer, Amma Gyamfuah, Barbara Salem, Timothy Johnson, Max Wicha, Sofia Merajver, Celina Kleer, Judy Pang, Emmanuel Amankwaa-Frempong, Azadeh Stark, Francis Abantanga, Lisa Newman, Baffour Awuah
Women with African ancestry in western, sub-Saharan Africa and in the United States represent a population subset facing an increased risk of being diagnosed with biologically aggressive phenotypes of breast cancer that are negative for the estrogen receptor, the progesterone receptor, and the HER2/neu marker. These tumors are commonly referred to as triple-negative breast cancer. Disparities in breast cancer incidence and outcome related to racial or ethnic identity motivated the establishment of the International Breast Registry, on the basis of partnerships between the Komfo Anokye Teaching Hospital in Kumasi, Ghana, the University of Michigan Comprehensive Cancer Center in Ann Arbor, Michigan, and the Henry Ford Health System in Detroit, Michigan...
October 2016: Journal of Global Oncology
https://www.readbyqxmd.com/read/28717401/novel-therapeutic-strategies-in-the-treatment-of-triple-negative-breast-cancer
#5
REVIEW
Karima Oualla, Heba M El-Zawahry, Banu Arun, James M Reuben, Wendy A Woodward, Heba Gamal El-Din, Bora Lim, Nawfel Mellas, Naoto T Ueno, Tamer M Fouad
Triple-negative breast cancer (TNBC) is a heterogeneous subtype of breast cancer that is defined by negative estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2) status. Treating patients with TNBC remains clinically challenging, as patients are not candidates for endocrine or HER2-directed therapy. As a result, chemotherapy with traditional agents such as anthracyclines and taxanes remains the only available option with moderate success. Recent discoveries have revealed that TNBC is a heterogeneous disease at the clinical, histological and molecular levels...
July 2017: Therapeutic Advances in Medical Oncology
https://www.readbyqxmd.com/read/28717394/immunohistochemical-expression-of-er-%C3%AE-and-pr-in-papillary-thyroid-carcinoma
#6
Marwa Mohammed Serag Eldien, Asmaa Gaber Abdou, Tarek Rageh, Eman Abdelrazek, Enas Elkholy
Papillary thyroid carcinoma (PTC) is the most common thyroid cancer with multiple risk factors including exposure to ionising radiation. Oestrogens contribute to papillary carcinoma development by promoting cell proliferation and invasion of mutated epithelial follicular cells. The present study aimed to assess ER-α and PR expression in PTC and to correlate their expression with the clinicopathological parameters in this cancer. This study included 62 primary and six metastatic papillary thyroid carcinoma cases...
2017: Ecancermedicalscience
https://www.readbyqxmd.com/read/28716426/hormone-dependent-uterine-epithelial-stromal-communication-for-pregnancy-support
#7
Xiaoqiu Wang, San-Pin Wu, Francesco J DeMayo
Human fertility is a relatively inefficient process. Despite the presence of visibly healthy embryos, 30% of pregnancies generated by assisted reproductive technology (ART) fail before the second trimester. The uterine microenvironment plays a critical role in establishing and maintaining a successful pregnancy that requires coordinated communication between the epithelial and stromal cells of the endometrium. The epithelial cells must cease proliferation and become permissive for the conceptus (embryo and associated extraembryonic membranes), while the stromal cells undergoes mesenchymal-to-epithelioid transformation to form the decidua in support of subsequent embryo development...
July 6, 2017: Placenta
https://www.readbyqxmd.com/read/28714765/comparison-of-estrogen-and-progesterone-receptor-antibody-reagents-using-proficiency-testing-data
#8
Megan L Troxell, Thomas Long, Jason L Hornick, Abiy B Ambaye, Kristin C Jensen
CONTEXT: - Immunohistochemical analysis of estrogen receptor (ER) and progesterone receptor (PgR) expression in breast cancer is the current standard of care and directly determines therapy. In 2010 the American Society of Clinical Oncology and the College of American Pathologists (ASCO/CAP) published guidelines for ER and PgR predictive testing, encompassing preanalytic, analytic, postanalytic factors; antibody validation; and proficiency testing. OBJECTIVE: - To compare the performance of different antibody reagents for ER and PgR immunohistochemical analysis by using CAP proficiency testing data...
July 17, 2017: Archives of Pathology & Laboratory Medicine
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/28711501/comparing-the-androgenic-and-estrogenic-properties-of-progestins-used-in-contraception-and-hormone-therapy
#10
Renate Louw-du Toit, Meghan S Perkins, Janet P Hapgood, Donita Africander
Progestins used in endocrine therapies bind to multiple steroid receptors and are associated with several side-effects. It is thus important to understand the relationship between steroid receptor cross-reactivity and the side-effect profile of progestins. In cell lines that express negligible levels of steroid receptors, we report for the first time the binding affinities, potencies and efficacies of selected progestins from different generations determined in parallel. We show that the progestins bind to the androgen receptor (AR) with similar affinities to each other and progesterone, while none bind estrogen receptor (ER)-β, and only norethisterone acetate, levonorgestrel and gestodene bind ERα...
July 12, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28710294/steroid-hormone-receptors-and-direct-effects-of-steroid-hormones-on-ram-spermatozoa
#11
Silvia Gimeno-Martos, Marta González-Arto, Adriana Casao, Margarita Gallego, Jose A Cebrian-Perez, Teresa Muino Blanco, Rosaura Perez-Pe
This study was based on the assumption that steroid hormones present in the female genital tract may have a rapid effect on ram spermatozoa by interaction with specific surface receptors. We demonstrate the presence of progesterone (PR) and estrogen (ER) receptors in ram spermatozoa, their localization changes during in vitro capacitation and the actions of progesterone (P4) and 17β-estradiol (E2) on ram sperm functionality. Immunolocalization assays revealed the presence of PR mainly at the equatorial region of ram spermatozoa...
July 14, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28708530/bambi-promotes-porcine-granulosa-cell-steroidogenesis-involving-tgf-%C3%AE-signaling
#12
Long Bai, Guiyan Chu, Wusu Wang, Aoqi Xiang, Gongshe Yang
Transforming growth factor β (TGF-β), acting as the auto/para endocrine factors, has multi-function in mammalian follicle development. Bone morphogenetic protein and activin membrane-bound inhibitor (BAMBI) is considered as a pseudoreceptor in the TGF-β signal pathway which has the similar extracellular structure of TGF-β receptor but lack of intracellular serine/threonine kinase domains. However, the biological function of BAMBI involved in porcine granulosa cell steroidogenesis remains unknown. This study was thus carried out to explore the effect of BAMBI on the steroidogenesis process in porcine primary granulosa cells...
May 28, 2017: Theriogenology
https://www.readbyqxmd.com/read/28708501/bmal1-interference-impairs-hormone-synthesis-and-promotes-apoptosis-in-porcine-granulosa-cells
#13
Wusu Wang, Lin Yin, Long Bai, Guangjun Ma, Cunzhen Zhao, Aoqi Xiang, Weijun Pang, Gongshe Yang, Guiyan Chu
In mammals, granulosa cell proliferation, differentiation, luteinization, apoptosis, and hormone synthesis are tightly related to oocyte maturation, follicular development and ovarian function. In current study, we investigated the role of the key circadian clock gene, brain and muscle arnt-like protein-1 (Bmal1), on porcine granulosa cell hormone secretion and apoptosis. The transcription levels of circadian clock genes, including Bmal1 and period circadian clock 2 (Per2), were detected by RT-qPCR. We found that the circadian clock genes exhibited rhythmic change and were further enhanced by dexamethasone synchronization in granulosa cells...
May 23, 2017: Theriogenology
https://www.readbyqxmd.com/read/28707744/the-impact-of-molecular-subtype-on-breast-cancer-recurrence-in-young-women-treated-with-contemporary-adjuvant-therapy
#14
Hanan Alabdulkareem, Tiffany Pinchinat, Sarah Khan, Alyssa Landers, Paul Christos, Rache Simmons, Tracy-Ann Moo
Breast cancer is the leading cause of cancer death in women younger than 40 years. Triple-negative breast cancer (TNBC) and human epidermal growth factor receptor-2 (HER2) positive subtypes have a particularly poor prognosis in this age group. The purpose of this study was to compare rates of recurrence among breast cancer subtypes in young patients treated with modern adjuvant systemic therapy. A retrospective review of breast cancer patients managed at a major academic breast center between May 2000 and November 2014 was performed...
July 14, 2017: Breast Journal
https://www.readbyqxmd.com/read/28701790/membrane-progesterone-receptor-beta-mpr%C3%AE-paqr8-promotes-progesterone-dependent-neurite-outgrowth-in-pc12-neuronal-cells-via-non-g-protein-coupled-receptor-gpcr-signaling
#15
Mayu Kasubuchi, Keita Watanabe, Kanako Hirano, Daisuke Inoue, Xuan Li, Kazuya Terasawa, Morichika Konishi, Nobuyuki Itoh, Ikuo Kimura
Recently, sex steroid membrane receptors garnered world-wide attention because they may be related to sex hormone-mediated unknown rapid non-genomic action that cannot be currently explained by their genomic action via nuclear receptors. Progesterone affects cell proliferation and survival via non-genomic effects. In this process, membrane progesterone receptors (mPRα, mPRβ, mPRγ, mPRδ, and mPRε) were identified as putative G protein-coupled receptors (GPCRs) for progesterone. However, the structure, intracellular signaling, and physiological functions of these progesterone receptors are still unclear...
July 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28701684/expression-of-aldo-keto-reductase-family-1-member-c14-during-ovulation-in-the-rat
#16
Phuong T M Dam, You-Jee Jang, Ja-Yeon Kim, Seul-Gee Choi, Jae-Il Park, Young-Woo Seo, Sang-Young Chun
The potent androgen 5α-dihydrotestosterone is metabolized to the weak androgen 5α-androstane-3α, 17β-diol (3α-diol) by the enzyme aldo-keto reductase family 1, member C14 (Akr1c14) in rodents. The purpose of the present study was to investigate the regulation of Akr1c14 expression during the ovulatory process in rat ovaries. Northern blot analysis revealed that treatment of immature rats with equine chorionic gonadotropin resulted in lowered Akr1c14 expression, whereas subsequent treatment with human chorionic gonadotropin (hCG) increased ovarian Akr1c14 expression within 3 h...
July 11, 2017: Endocrine Journal
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
#17
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/28701032/bcl2-regulation-according-to-molecular-subtype-of-breast-cancer-by-analysis-of-the-cancer-genome-atlas-database
#18
Ki-Tae Hwang, Kwangsoo Kim, Ji Hyun Chang, Sohee Oh, Young A Kim, Jong Yoon Lee, Se Hee Jung, In Sil Choi
Purpose: We investigated BCL2 regulation across DNA, RNA, protein, and methylation status according to molecular subtype of breast cancer using The Cancer Genome Atlas (TCGA) database. Materials and Methods: We analyzed clinical and biological data on 1,096 breast cancers from the TCGA database. Biological data included reverse phase protein array (RPPA), mRNA sequencing (mRNA seq), mRNA microarray, methylation, copy number alteration linear, copy number alteration nonlinear, and mutation data...
July 4, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/28701017/high-level-of-progesteron-receptor-membrane-component-1-pgrmc-1-in-tissue-of-breast-cancer-patients-is-associated-with-worse-response-to-anthracycline-based-neoadjuvant-therapy
#19
Marina Willibald, Isabel Wurster, Christoph Meisner, Ulrich Vogel, Harald Seeger, Alfred O Mueck, Tanja Fehm, Hans Neubauer
PGRMC1 is known to be highly expressed in breast cancer tissue and is associated with chemoresistance in breast cancer cells. However, its role in breast cancer signaling is not fully understood yet. In the present study, the expression status of PGRMC1 and its phosphorylated version (pPGRMC1) in breast cancer tissue and surrounding stroma before and after neoadjuvant therapy was examined to find a possible association to therapy response. Tissue biopsies of 69 breast cancer patients were analyzed by immunohistochemistry for expression levels of PGRMC1 and pPGRMC1...
July 12, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28699905/fkbp51-decreases-cell-proliferation-and-increases-progestin-sensitivity-of-human-endometrial-adenocarcinomas-by-inhibiting-akt
#20
Jing Dong, Yulian Jiao, Wenli Mu, Bingru Lu, Muyun Wei, Linying Sun, Shengnan Hu, Bin Cui, Xiaowen Liu, Zijiang Chen, Yueran Zhao
In this study, we investigated the role of FK506 binding protein 51 (FKBP51) in human endometrial adenocarcinoma progression. Immunohistochemical analysis showed decreased FKBP51 expression in endometrial adenocarcinoma tissues. Moreover, higher FKBP51 expression was observed in the normal secretory phase than in proliferative-phase endometrial tissues. FKBP51-shRNA transfected KLE cells showed high Ser473-phospho Akt with decreased p21 and p27 levels, which promoted S-G2/M phase cell cycle progression and proliferation...
June 30, 2017: Oncotarget
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