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https://www.readbyqxmd.com/read/28623970/localization-of-the-placental-bcrp-abcg2-transporter-to-lipid-rafts-role-for-cholesterol-in-mediating-efflux-activity
#1
John T Szilagyi, Anna M Vetrano, Jeffrey D Laskin, Lauren M Aleksunes
INTRODUCTION: The breast cancer resistance protein (BCRP/ABCG2) is an efflux transporter in the placental barrier. By transporting chemicals from the fetal to the maternal circulation, BCRP limits fetal exposure to a range of drugs, toxicants, and endobiotics such as bile acids and hormones. The purpose of the present studies was to 1) determine whether BCRP localizes to highly-ordered, cholesterol-rich lipid raft microdomains in placenta microvillous membranes, and 2) determine the impact of cholesterol on BCRP-mediated placental transport in vitro...
July 2017: Placenta
https://www.readbyqxmd.com/read/28611542/protecting-effects-of-gonadotropin-releasing-hormone-agonist-on-chemotherapy-induced-ovarian-damage-in-premenopausal-breast-cancer-patients-a-systematic-review-and-meta-analysis
#2
REVIEW
Fang Bai, Yunshu Lu, Kejin Wu, Qing Chen, Longlong Ding, Meixin Ge, Ziyi Weng
OBJECTIVE: There is no universal consensus on whether gonadotropin-releasing hormone (GnRH) agonist could protect chemotherapy-induced ovarian damage in premenopausal breast cancer patients. This meta-analysis was conducted to estimate the protective effects of GnRH agonist on premenopausal breast cancer patients in details. METHODS: PubMed, Cochrane Library, Embase, CNKI and the Chinese Wangfang Database, conference proceedings and clinical trials were searched to find studies reported since 2000...
March 2017: Breast Care
https://www.readbyqxmd.com/read/28609163/imaging-appearance-and-clinical-impact-of-preoperative-breast-mri-in-pregnancy-associated-breast-cancer
#3
Kelly S Myers, Lauren A Green, Lizza Lebron, Elizabeth A Morris
OBJECTIVE: The purpose of this study is to describe the imaging features of pregnancy-associated breast cancer (PABC) on breast MRI and to consider the impact of preoperative MRI on patient management. MATERIALS AND METHODS: A retrospective review of medical records from January 1994 to May 2014 identified 183 women who presented with a new diagnosis of breast cancer during pregnancy or within 1 year postpartum. MR images were available for 53 of these patients, all of whom were included in the study...
June 13, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28607282/laparoendoscopic-single-site-adnexal-surgery-preliminary-indian-experience
#4
Smitha Balusamy, Hrishikesh P Salgaonkar, Ramya Ranjan Behera, Ashwini Bhalerao-Gandhi, Deepraj S Bhandarkar
INTRODUCTION: Laparoendoscopic single-site surgery (LESS) is an emerging technique in gynaecology. The proposed advantages of the LESS include better cosmesis and reduction in pain. We report our preliminary experience with LESS in the treatment of adnexal pathology. MATERIALS AND METHODS: After a preoperative workup, LESS was offered to 37 patients between July 2009 and April 2015. All the procedures were carried out through a 2-2.5 cm transumbilical incision using conventional laparoscopic instruments...
July 2017: Journal of Minimal Access Surgery
https://www.readbyqxmd.com/read/28603694/estrogen-effects-on-the-mammary-gland-in-early-and-late-life-and-breast-cancer-risk
#5
REVIEW
Genevieve Victoria Dall, Kara Louise Britt
A woman has an increased risk of breast cancer if her lifelong estrogen exposure is increased due to an early menarche, a late menopause, and/or an absence of childbearing. For decades, it was presumed that the number of years of exposure drove the increased risk, however, recent epidemiological data have shown that early life exposure (young menarche) has a more significant effect on cancer risk than late menopause. Thus, rather than the overall exposure it seems that the timing of hormone exposure plays a major role in defining breast cancer risk...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28600297/the-premenopausal-breast-cancer-collaboration-a-pooling-project-of-studies-participating-in-the-national-cancer-institute-cohort-consortium
#6
Hazel B Nichols, Minouk J Schoemaker, Lauren B Wright, Craig McGowan, Mark N Brook, Kathleen M McClain, Michael E Jones, Hans-Olov Adami, Claudia Agnoli, Laura Baglietto, Leslie Bernstein, Kimberly A Bertrand, William J Blot, Marie-Christine Boutron-Ruault, Lesley Butler, Yu Chen, Michele M Doody, Laure Dossus, A Heather Eliassen, Graham G Giles, Inger T Gram, Susan E Hankinson, Judy Hoffman-Bolton, Rudolf Kaaks, Timothy J Key, Victoria A Kirsh, Cari M Kitahara, Woon-Puay Koh, Susanna C Larsson, Eiliv Lund, Huiyan Ma, Melissa A Merritt, Roger L Milne, Carmen Navarro, Kim Overvad, Kotaro Ozasa, Julie R Palmer, Petra H Peeters, Elio Riboli, Thomas E Rohan, Atsuko Sadakane, Malin Sund, Rulla M Tamimi, Antonia Trichopoulou, Lars Vatten, Kala Visvanathan, Elisabete Weiderpass, Walter C Willett, Alicja Wolk, Anne Zeleniuch-Jacquotte, Wei Zheng, Dale P Sandler, Anthony J Swerdlow
Breast cancer is a leading cancer diagnosis among premenopausal women around the world. Unlike rates in postmenopausal women, incidence rates of advanced breast cancer have increased in recent decades for premenopausal women. Progress in identifying contributors to breast cancer risk among premenopausal women has been constrained by the limited numbers of premenopausal breast cancer cases in individual studies and resulting low statistical power to subcategorize exposures or to study specific subtypes. The Premenopausal Breast Cancer Collaborative Group was established to facilitate cohort-based analyses of risk factors for premenopausal breast cancer by pooling individual-level data from studies participating in the United States National Cancer Institute Cohort Consortium...
June 9, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28592386/ct-p6-compared-with-reference-trastuzumab-for-her2-positive-breast-cancer-a-randomised-double-blind-active-controlled-phase-3-equivalence-trial
#7
Justin Stebbing, Yauheni Baranau, Valeriy Baryash, Alexey Manikhas, Vladimir Moiseyenko, Giorgi Dzagnidze, Edvard Zhavrid, Dmytro Boliukh, Daniil Stroyakovskii, Joanna Pikiel, Alexandru Eniu, Dmitry Komov, Gabriela Morar-Bolba, Rubi K Li, Andriy Rusyn, Sang Joon Lee, Sung Young Lee, Francisco J Esteva
BACKGROUND: CT-P6 is a proposed biosimilar to reference trastuzumab. In this study, we aimed to establish equivalence of CT-P6 to reference trastuzumab in neoadjuvant treatment of HER2-positive early-stage breast cancer. METHODS: In this randomised, double-blind, active-controlled, phase 3 equivalence trial, we recruited women aged 18 years or older with stage I-IIIa operable HER2-positive breast cancer from 112 centres in 23 countries. Inclusion criteria were an Eastern Cooperative Oncology Group performance status score of 0 or 1; a normal left ventricular ejection fraction of at least 55%; adequate bone marrow, hepatic, and renal function; at least one measureable lesion; and known oestrogen and progesterone receptor status...
June 2, 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28572259/emerging-data-and-current-challenges-for-young-old-obese-or-male-patients-with-breast-cancer
#8
EDITORIAL
Rachel A Freedman, Ann H Partridge
There are distinct subgroups of patients who have historically been underrepresented in most prospective clinical trials in breast cancer, including the youngest and oldest patients, male patients, and those struggling with obesity. Herein, we review current and future directions in research for each of these special populations with breast cancer, highlighting significant knowledge gaps and priorities in tumor biology and heterogeneity, therapeutic decision making promotion of adherence, supportive care, and psychosocial and functional well-being...
June 1, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28526992/epithelial-mesenchymal-transition-emt-in-metastatic-breast-cancer-in-omani-women
#9
Ritu Lakhtakia, Adil Aljarrah, Muhammad Furrukh, Shyam S Ganguly
Breast cancer (BC) in Oman affects younger women and has a more aggressive course. Clinical and biological variables like age, pregnancy, tumor size, type, grade, receptor expression and proliferation predict disease aggression but there is no direct predictor of metastasis except lymphovascular invasion. Epithelial-mesenchymal transition (EMT) is characterized by epithelial cells losing epithelial and acquiring mesenchymal morpho-immunophenotypic characteristics. In tumors, EMT-like transitions may signify a metastatic phenotype and have features in common with cancer stem cells (CSC) which show resistance to chemotherapy...
May 19, 2017: Cancer Microenvironment: Official Journal of the International Cancer Microenvironment Society
https://www.readbyqxmd.com/read/28526378/association-between-prepregnancy-obesity-and-metabolic-risk-in-chilean-premenopausal-women-10%C3%A2-y-postpartum
#10
Maria Luisa Garmendia, Carolina Zamudio, Marcela Araya, Juliana Kain
OBJECTIVES: One of every four pregnant women in Chile is obese. Gestational obesity is associated with maternal metabolic complications in pregnancy (e.g., gestational diabetes, preeclampsia), but to our knowledge, there is little evidence on relationships with future metabolic risk. The aim of this study was to evaluate the association between prepregnancy obesity (prepregnancy body mass index ≥30 kg/m(2)) or excessive gestational weight gain (GWG; according to the 2009 recommendations from the Institute of Medicine), and maternal metabolic complications 10 y postpartum in premenopausal Chilean women...
June 2017: Nutrition
https://www.readbyqxmd.com/read/28526012/the-pregnancy-and-fertility-prefer-study-an-italian-multicenter-prospective-cohort-study-on-fertility-preservation-and-pregnancy-issues-in-young-breast-cancer-patients
#11
Matteo Lambertini, Paola Anserini, Valeria Fontana, Francesca Poggio, Giuseppina Iacono, Annalisa Abate, Alessia Levaggi, Loredana Miglietta, Claudia Bighin, Sara Giraudi, Alessia D'Alonzo, Eva Blondeaux, Davide Buffi, Francesco Campone, Domenico F Merlo, Lucia Del Mastro
BACKGROUND: Fertility and pregnancy issues are of key importance for young breast cancer patients. Despite several advances in the field, there are still multiple unmet needs and barriers in discussing and dealing with these concerns. To address the significant challenges related to fertility and pregnancy issues, the PREgnancy and FERtility (PREFER) study was developed as a national comprehensive program aiming to optimize care and improve knowledge around these topics. METHODS: The PREFER study is a prospective cohort study conducted across several Italian institution affiliated with the Gruppo Italiano Mammella (GIM) group evaluating patterns of care and clinical outcomes of young breast cancer patients dealing with fertility and pregnancy issues...
May 19, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28515524/spinal-anaesthesia-for-a-caesarean-section-in-a-patient-with-paraneoplastic-cerebellar-ataxia
#12
Ayca Tas Tuna, Fatih Sahin, Dilcan Kotan, Ali Fuat Erdem, Meltem Baykara, Tuba Duzcan
Paraneoplastic cerebellar ataxia (PCA) is most frequently observed in gynaecological cancers, small cell lung cancer, breast cancer, Hodgkin's lymphoma, cancer testis or malignant thymoma. In the literature, there is no data related to the effects of PCA during pregnancy or reports on the effects of anaesthesia in patients with PCA. We present management of a pregnant woman with PCA who was suddenly unable to walk with PCA and for whom effective spinal anaesthesia was performed for an elective caesarean section with no complications...
April 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/28487351/gestational-high-fat-diet-and-bisphenol-a-exposure-heightens-mammary-cancer-risk
#13
Yuet-Kin Leung, Vinothini Govindarajah, Ana Cheong, Jen Veevers, Dan Song, Robin Gear, Xuegong Zhu, Jun Ying, Ady Kendler, Mario Medvedovic, Scott Belcher, Shuk-Mei Ho
In utero exposure to bisphenol A (BPA) increases mammary cancer susceptibility in offspring. High fat diet is widely believed to be a risk factor of breast cancer. The objective of this study was to determine whether maternal exposure to BPA in addition to high-butterfat (HBF) intake during pregnancy further impacts carcinogen-induced mammary cancer risk in offspring, and its dose-response curve. In this study, we found that gestational HBF intake in addition to a low-dose BPA (25 µg/kg BW/day) exposure increased mammary tumor incidence in a 50-day-of-age chemical carcinogen administration model and altered mammary gland morphology in offspring in a non-monotonic manner, while shortening tumor-free survival time compared with the HBF-alone group...
May 9, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28477329/is-chemotherapy-always-required-for-cancer-in-pregnancy-an-observational-study
#14
E M Walsh, G M O'Kane, K A Cadoo, D M Graham, G J Korpanty, D G Power, D N Carney
BACKGROUND: Cancer in pregnancy is relatively rare, but the incidence is increasing. Several studies show that cytotoxic agents are safe to use in pregnancy from the second trimester onwards. AIMS: This study assesses the maternal and foetal outcomes of cancers diagnosed during pregnancy. In particular, it focuses on a subset of women who elected to defer systemic chemotherapy until after delivery. This study examines if all cancers need to be treated during pregnancy or if, in certain cases, treatment can be safely deferred until after full-term delivery...
May 5, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28463857/controversies-about-fertility-and-pregnancy-issues-in-young-breast-cancer-patients-current-state-of-the-art
#15
Matteo Lambertini, Oranite Goldrat, Florian Clatot, Isabelle Demeestere, Ahmad Awada
PURPOSE OF REVIEW: For trying to help physicians in counseling their young patients with breast cancer interested in fertility preservation and future reproductive plans, this manuscript aims to perform an overview of the main available data on 10 controversies in this field. RECENT FINDINGS: Thanks to the improvement in patients' prognosis, a growing attention towards fertility and pregnancy issues has been given over the past years and is currently provided to young breast cancer patients...
July 2017: Current Opinion in Oncology
https://www.readbyqxmd.com/read/28461243/current-perspective-of-diethylstilbestrol-des-exposure-in-mothers-and-offspring
#16
REVIEW
Taher Al Jishi, Consolato Sergi
Diethylstilbestrol (DES) was an orally active estrogen prescribed to the pregnant women to prevent miscarriages. DES is known as a 'biological time bomb' and long-term effects of DES have been recorded in the mothers exposed to DES and their offspring (DES-daughters and DES-sons). Adverse pregnancy outcomes, infertility, cancer, and early menopause have been discovered in women exposed to DES, and some events occur in their offspring and subsequent generations. An increased risk of breast cancer is not limited to the DES-exposed daughters...
April 28, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28453508/viable-options-for-fertility-preservation-in-breast-cancer-patients-a-focus-on-latin-america
#17
Matteo Lambertini, Oranite Goldrat, Regina Barragan-Carrillo, Giulia Viglietti, Isabelle Demeestere, Cynthia Villarreal-Garza
Thanks to the improved survival outcomes observed in recent years, a growing attention has been given to the quality of life issues faced by young women with breast cancer such as fertility preservation and concerns related to future pregnancies. However, several challenges remain for young women with breast cancer considering undergoing fertility preservation strategies. Further specific issues on this regard should be taken into account in Latin America, where patients and physicians face particular barriers that hinder the routine adoption of this practice...
March 2017: Revista de Investigación Clínica; Organo del Hospital de Enfermedades de la Nutrición
https://www.readbyqxmd.com/read/28452561/follicular-growth-but-absence-of-oocyte-and-cumulus-maturation-during-ovarian-stimulation-in-the-days-following-surgical-abortion-a-case-report
#18
Clémentine Cohade, Jessika Moreau, Nicolas Gatimel, Laurence Gladieff, Jean Parinaud, Roger Leandri
This paper is a case report on the results of an ovarian stimulation performed in the days following an induced abortion. A patient had breast cancer diagnosed during an early pregnancy. She had an induced abortion and had, before chemotherapy an ovarian stimulation, using rFSH and GnRH antagonist, followed by follicular puncture for oocyte for vitrification in the view of fertility preservation. No oocyte could be obtained despite a good hormonal and ultrasonographical follicular growth. This case report suggest that ovarian stimulation must be delayed after abortion to allow the maturation of oocyte-cumulus complexes...
April 28, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28442393/progesterone-receptors-pr-mediate-stat-actions-pr-and-prolactin-receptor-signaling-crosstalk-in-breast-cancer-models
#19
Katherine A Leehy, Thu H Truong, Laura J Mauro, Carol A Lange
Estrogen is the major mitogenic stimulus of mammary gland development during puberty wherein ER signaling acts to induce abundant PR expression. PR signaling, in contrast, is the primary driver of mammary epithelial cell proliferation in adulthood. The high circulating levels of progesterone during pregnancy signal through PR, inducing expression of the prolactin receptor (PRLR). Cooperation between PR and prolactin (PRL) signaling, via regulation of downstream components in the PRL signaling pathway including JAKs and STATs, facilitates the alveolar morphogenesis observed during pregnancy...
April 22, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28440587/risk-benefit-perception-of-pregnancy-among-breast-cancer-survivors
#20
P-L Hsieh, S-M Huang, L-Y Chien, C-F Lee, Y Hsiung, C-J Tai
Helping breast cancer patients who desire a pregnancy after cancer treatment is a vital issue. Little is known about the complex context of the decision to become pregnant after breast cancer treatment. The purpose of this study was to understand the risk-benefit perception of choosing conception or contraception after treatment in Taiwan. We applied grounded theory to guide this exploratory qualitative study. Data were collected through in-depth interviews with 16 breast cancer patients. Pregnancy was addressed in the context of cancer as a potentially life-threatening diagnosis and its treatment...
April 25, 2017: European Journal of Cancer Care
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