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https://www.readbyqxmd.com/read/27932523/treatment-of-recurrent-ovarian-cysts-and-primary-infertility-by-iranian-traditional-medicine-a-case-report
#1
Mehdi Salehi, Mohammad Setayesh, Roshanak Mokaberinejad
Infertility is a medical and psychosocial problem with a high prevalence. There are different treatments for this problem in Iranian traditional medicine. A 28-year-old woman presented with the complaints of 4 emergency operations of the left ovarian cyst during 4 years and infertility. Diagnostic laparoscopy showed an ovarian cyst, adhesion, and endometriosis. Hysteroscopy was unremarkable. After 2 months of letrozole administration, the ovarian cyst ruptured again. Considering the failure of conventional treatments, Iranian traditional medicine products were administered to the patient...
December 8, 2016: Journal of Evidence-based Complementary & Alternative Medicine
https://www.readbyqxmd.com/read/27927075/soy-isoflavones-exert-beneficial-effects-on-letrozole-induced-rat-polycystic-ovary-syndrome-pcos-model-through-anti-androgenic-mechanism
#2
Ravi Kumar Rajan, Siva Selva Kumar M, Bhaskar Balaji
CONTEXT: Soy is the main source of phytoestrogens, which has long been used as traditional food. One major subtype of phytoestrogens includes isoflavones and they are scientifically validated for their beneficial actions on many hormone-dependent conditions. OBJECTIVE: The present study examines the effect of soy isoflavones on letrozole-induced polycystic ovary syndrome (PCOS) rat model. MATERIALS AND METHODS: PCOS was induced in Sprague-Dawley rats with of 1 mg/kg letrozole, p...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27923406/ameliorative-effects-of-rutin-against-metabolic-biochemical-and-hormonal-disturbances-in-polycystic-ovary-syndrome-in-rats
#3
Sarwat Jahan, Faryal Munir, Suhail Razak, Anam Mehboob, Qurat Ul Ain, Hizb Ullah, Tayyaba Afsar, Ghazala Shaheen, Ali Almajwal
BACKGROUND: Polycystic ovary syndrome (PCOS) is the most prevalent endocrinopathy in women of reproductive age. The study was commenced to assess the favorable effects of Rutin against metabolic, biochemical, histological, and androgenic aspects of polycystic ovary syndrome in rats. METHODS: Female Sprague-Dawley rats were administered letrozole (1 mg/kg) per orally (p.o) for a period of 21 days for the induction of PCOS, followed by dose of rutin (100 mg/kg and 150 mg/kg, p...
December 7, 2016: Journal of Ovarian Research
https://www.readbyqxmd.com/read/27923036/cotargeting-of-cyp-19-aromatase-and-emerging-pivotal-signalling-pathways-in-metastatic-breast-cancer
#4
REVIEW
Stine Daldorff, Randi Margit Ruud Mathiesen, Olav Erich Yri, Hilde Presterud Ødegård, Jürgen Geisler
Aromatase inhibition is one of the cornerstones of modern endocrine therapy of oestrogen receptor-positive (ER+) metastatic breast cancer (MBC). The nonsteroidal aromatase inhibitors anastrozole and letrozole, as well as the steroidal aromatase inactivator exemestane, are the preferred drugs and established worldwide in all clinical phases of the disease. However, although many patients suffering from MBC experience an initial stabilisation of their metastatic burden, drug resistance and disease progression occur frequently, following in general only a few months on treatment...
December 6, 2016: British Journal of Cancer
https://www.readbyqxmd.com/read/27920623/factors-influencing-decision-making-for-or-against-adjuvant-and-neoadjuvant-chemotherapy-in-postmenopausal-hormone-receptor-positive-breast-cancer-patients-in-the-evaluate-tm-study
#5
Paul Gaß, Peter A Fasching, Tanja Fehm, Johann de Waal, Mahdi Rezai, Bernd Baier, Gerold Baake, Hans-Christian Kolberg, Martin Guggenberger, Mathias Warm, Nadia Harbeck, Rachel Wuerstlein, Jörg-Uwe Deuker, Peter Dall, Barbara Richter, Grischa Wachsmann, Cosima Brucker, Jan W Siebers, Nikos Fersis, Thomas Kuhn, Christopher Wolf, Hans-Walter Vollert, Georg-Peter Breitbach, Wolfgang Janni, Robert Landthaler, Andreas Kohls, Daniela Rezek, Thomas Noesselt, Gunnar Fischer, Stephan Henschen, Thomas Praetz, Volker Heyl, Thorsten Kühn, Thomas Krauss, Christoph Thomssen, Andre Hohn, Hans Tesch, Christoph Mundhenke, Alexander Hein, Claudia Rauh, Christian M Bayer, Adib Jacob, Katja Schmidt, Erik Belleville, Peyman Hadji, Sara Y Brucker, Matthias W Beckmann, Diethelm Wallwiener, Sherko Kümmel, Christian R Löhberg
BACKGROUND: Decision-making for or against neoadjuvant or adjuvant chemotherapy in postmenopausal patients with hormone receptor-positive breast cancer does not follow any clear guidelines, and some patients may unnecessarily undergo chemotherapy and be exposed to the associated toxicity. The aim of this study was to identify the patient population for whom this issue may bear relevance. METHODS: Patients being treated with letrozole in the prospective multicenter noninterventional EvAluate-TM study were recruited...
October 2016: Breast Care
https://www.readbyqxmd.com/read/27914563/differential-effects-of-testosterone-and-estradiol-on-clitoral-function-an-experimental-study-in-rats
#6
Paolo Comeglio, Ilaria Cellai, Sandra Filippi, Chiara Corno, Francesca Corcetto, Annamaria Morelli, Elena Maneschi, Elisa Maseroli, Edoardo Mannucci, Massimiliano Fambrini, Mario Maggi, Linda Vignozzi
INTRODUCTION: Female sexual response is a complex phenomenon in which psychological, neurologic, and vascular mechanisms and hormonal factors interact. During the arousal phase, they cooperate to increase genital blood flow, thus inducing engorgement of the clitoris and lubrication of the vagina. Regulation of vascular and non-vascular smooth muscle tone is the crucial event in the erectile process. Preclinical studies have suggested that nitric oxide (NO) is the main vasodilator neurotransmitter modulating, through the second messenger cyclic guanosine monophosphate (cGMP), clitoral flow vessels...
December 2016: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/27895740/letrozole-as-second-line-hormonal-treatment-for-recurrent-low-grade-endometrial-stromal-sarcoma-a-case-report-and-review-of-the-literature
#7
Kohei Nakamura, Kentaro Nakayama, Masako Ishikawa, Noriyoshi Ishikawa, Hiroshi Katagiri, Atsuko Katagiri, Tomoka Ishibashi, Emi Sato, Kohji Iida, Razia Sultana, Satoru Kyo
Low-grade endometrial stromal sarcoma (LGESS) is a rare malignancy. The tumor is reportedly responsive to hormonal therapy, most commonly with medroxyprogesterone acetate (MPA), but the effectiveness of aromatase inhibitors for recurrent LGESS remains unclear. The present study reports a case of stage IC LGESS presenting with abnormal uterine bleeding, and also provides a review of the literature. Following a total abdominal hysterectomy and bilateral salpingo-oophorectomy, MPA therapy was initiated; treatment was successful, but discontinued 19 months later due to disruptive side effects...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27866972/letrozole-regulates-actin-cytoskeleton-polymerization-dynamics-in-a-src-1-dependent-manner-in-the-hippocampus-of-mice
#8
Yangang Zhao, Yanlan Yu, Yuanyuan Zhang, Li He, Linli Qiu, Jikai Zhao, Mengying Liu, Jiqiang Zhang
In the hippocampus, local estrogens (E2) derived from testosterone that is catalyzed by aromatase play important roles in the regulation of hippocampal neural plasticity, but the underlying mechanisms remain unclear. The actin cytoskeleton contributes greatly to hippocampal synaptic plasticity; however, whether it is regulated by local E2 and the related mechanisms remain to be elucidated. In this study, we first examined the postnatal developmental profiles of hippocampal aromatase and specific proteins responsible for actin cytoskeleton dynamics...
November 17, 2016: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27866938/ovulation-induction-in-polycystic-ovary-syndrome-current-options
#9
REVIEW
Richard S Legro
There are a variety of effective treatment options to induce ovulation in women with polycystic ovary syndrome (PCOS). The most effective treatments are primarily reproductive and target the hypothalamic-pituitary-ovarian (HPO) axis. Letrozole, an aromatase inhibitor, is headed toward replacing clomiphene, a selective estrogen receptor modulator, as the first-choice option. Metabolic treatments likely work indirectly through the HPO axis. Many metabolic treatments have shown initial promise and later failed (troglitozone or d-chiro-inositol) or disappointed (metformin); further studies are needed of newer agents to treat type 2 diabetes...
September 21, 2016: Best Practice & Research. Clinical Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/27864574/enhancing-endocrine-therapy-combination-strategies-for-the-treatment-of-postmenopausal-hormone-receptor-positive-her2-advanced-breast-cancer
#10
REVIEW
Kathleen I Pritchard, Stephen K Chia, Christine Simmons, Deanna McLeod, Alexander Paterson, Louise Provencher, Daniel Rayson
: : Breast cancer (BC) is the most common malignancy in women worldwide, with approximately two-thirds having hormone receptor (HR)-positive tumors. New endocrine therapy (ET) strategies include combining ET agents as well as adding inhibitors targeting growth factors, angiogenesis, the mechanistic target of rapamycin, phosphoinositide 3-kinase (PI3K), or cyclin-dependent kinase 4/6 to ET. Level 1 evidence supports use of fulvestrant plus anastrozole or palbociclib plus letrozole as first-line therapy for HR-positive, HER2-negative advanced BC with special consideration for the former in ET-naïve patients, as well as everolimus plus exemestane or palbociclib plus fulvestrant as second-line therapy with special consideration in select first-line patients...
November 18, 2016: Oncologist
https://www.readbyqxmd.com/read/27861893/synaptopodin-is-regulated-by-aromatase-activity
#11
Lars Fester, Lepu Zhou, Christiana Ossig, Jan Labitzke, Corinna Bläute, Manuela Bader, Günter Vollmer, Hubertus Jarry, Gabriele M Rune
Locally synthesized estradiol plays an important role in synaptic plasticity in the hippocampus. We have previously shown that in hippocampal neurons, activity of the enzyme aromatase, which converts testosterone to estradiol, is reduced via Ca(2+) -dependent phosphorylation. Synaptopodin is a highly estrogen responsive protein, and it has been shown that it is an important regulator of synaptic plasticity, mediated by its close association to internal calcium stores. In this study, we show that the expression of synaptopodin is stronger in the hippocampus of female animals than in that of male animals...
November 8, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27855085/comparison-of-acupuncture-pretreatment-followed-by-letrozole-versus-letrozole-alone-on-live-birth-in-anovulatory-infertile-women-with-polycystic-ovary-syndrome-a-study-protocol-for-a-randomised-controlled-trial
#12
Juan Li, Ernest Hung Yu Ng, Elisabet Stener-Victorin, Zhenxing Hu, Wanting Wu, Maohua Lai, Taixiang Wu, Hongxia Ma
INTRODUCTION: The high prevalence of insulin resistance in women with polycystic ovary syndrome (PCOS) is considered to be one of the major pathophysiological changes in PCOS that leads to anovulatory infertility. We hypothesise that electroacupuncture pretreatment improves insulin sensitivity and leads to a higher ovulation rate and greater chances of live birth after the induction of ovulation. The effect of electroacupuncture pretreatment followed by ovulation induction in women with anovulatory PCOS has not been investigated before, and we present here a randomised controlled trial to test this hypothesis by comparing electroacupuncture pretreatment followed by letrozole versus letrozole alone in anovulatory women with PCOS...
October 7, 2016: BMJ Open
https://www.readbyqxmd.com/read/27852078/clomiphene-citrate-versus-letrozole-for-ovarian-stimulation-in-therapeutic-donor-sperm-insemination
#13
Hady El Hachem, Roland Antaki, Camille Sylvestre, Isaac-Jacques Kadoch, Louise Lapensée, Pierre Emmanuel Bouet
AIM: To compare clomiphene citrate (CC) and letrozole for ovarian stimulation (OS) in therapeutic donor sperm insemination (TDI) cycles. METHODS: Retrospective cohort study between January 2011 and June 2014 at a University-affiliated private IVF clinic in Montreal, Canada. 257 normo-ovulatory women ≤40 years of age with no history of infertility undergoing 590 TDI cycles in the absence of a male partner (single women and same-sex couples) or azoospermia were included...
November 17, 2016: Gynecologic and Obstetric Investigation
https://www.readbyqxmd.com/read/27848887/metabolism-and-toxicological-implications-of-commonly-used-chemopreventive-drugs-against-breast-cancer-carcinogenesis
#14
Aliyu Muhammad, Mohammed Auwal Ibrahim, Ochuko Lucky Erukainure, Ibrahim Malami, Hadiza Sani, Hafsat Abdullahi Mohammed
BACKGROUND: Breast cancer has been reported to be among the frequently diagnosed cancer in women worldwide despite advances in early detection and treatment. Several drugs are currently used for chemoprevention as a result of a number of drawbacks associated with breast cancer therapy. AIM: This review focuses on the metabolism and toxicological implications of these drugs against breast cancer/carcinogenesis. METHODOLOGY: Relevant articles on the commonly used anti-breast cancer drugs (raloxifene, tamoxifen, anastrozole, letrozole and exemestane) used in chemoprevention were searched using the major scientific databases including Scopus, Embase, PubMed/ Medline, Sciencedirect and Google Scholar...
November 16, 2016: Current Drug Metabolism
https://www.readbyqxmd.com/read/27843622/review-of-hormone-based-treatments-in-postmenopausal-patients-with-advanced-breast-cancer-focusing-on-aromatase-inhibitors-and-fulvestrant
#15
REVIEW
Iben Kümler, Ann S Knoop, Christina A R Jessing, Bent Ejlertsen, Dorte L Nielsen
BACKGROUND: Endocrine therapy constitutes a central modality in the treatment of oestrogen receptor (ER)-positive advanced breast cancer. PURPOSE: To evaluate the evidence for endocrine treatment in postmenopausal patients with advanced breast cancer focusing on the aromatase inhibitors, letrozole, anastrozole, exemestane and fulvestrant. METHODS: A review was carried out using PubMed. Randomised phase II and III trials reporting on ≥100 patients were included...
2016: ESMO Open
https://www.readbyqxmd.com/read/27832985/effects-of-raloxifene-against-letrozole-induced-bone-loss-in-chemically-induced-model-of-menopause-in-mice
#16
Abul Kalam, Sushama Talegaonkar, Divya Vohora
INTRODUCTION: The deleterious effects of letrozole, an aromatase inhibitor, used in the adjuvant treatment of breast cancer in postmenopausal women, on bone are well-documented and represent a major drawback to its clinical use. Raloxifene, a selective estrogen receptor modulator and a clinically approved anti-osteoporotic drug, has been recently demonstrated to be efficacious in women with breast cancer. The present study evaluated the effects of preventive and curative treatment with raloxifene on letrozole-induced alterations of bone microarchitecture and turnover markers in a chemically-induced menopause model in mice...
November 8, 2016: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/27825272/cost-effectiveness-of-letrozole-and-purified-urinary-fsh-in-treating-women-with-clomiphene-citrate-resistant-polycystic-ovarian-syndrome-a-randomized-controlled-trial
#17
AbdelGany Hassan, Nesreen Shehata, Amr Wahba
We aimed to compare the cost effectiveness of letrozole versus purified urinary follicle stimulating hormone (FSH) in treating patients with clomiphene citrate (CC)-resistant polycystic ovary syndrome (PCOS). This was a randomized trial conducted in Cairo University and Beni-Suef University Hospitals, Egypt. A cohort of 140 eligible women was randomized to receive either letrozole 2.5 mg twice daily for five days, or FSH using a graduated regimen starting with a dose of 75 IU. Treatment was repeated for three months if pregnancy did not occur...
November 8, 2016: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/27821708/no-increased-risk-of-major-congenital-anomalies-or-adverse-pregnancy-or-neonatal-outcomes-following-letrozole-use-in-assisted-reproductive-technology
#18
T Tatsumi, S C Jwa, A Kuwahara, M Irahara, T Kubota, H Saito
STUDY QUESTION: Does letrozole use increase the risk of major congenital anomalies and adverse pregnancy and neonatal outcomes in fresh, single-embryo transfer? SUMMARY ANSWER: Letrozole significantly decreases the risk of miscarriage and does not increase the risk of major congenital anomalies or adverse pregnancy or neonatal outcomes compared with natural cycles in patients undergoing ART. WHAT IS KNOWN ALREADY: Letrozole is the most commonly used aromatase inhibitor for mild ovarian stimulation in ART...
November 7, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27817058/aromatase-inhibitor-induced-carpal-tunnel-syndrome-prevalence-in-daily-practice
#19
Labidi Soumaya, Mejri Nesrine, El Benna Houda, Afrit Mehdi, Lakhdhar Sarra, Boussen Hamouda
INTRODUCTION: We aim to evaluate prevalence and characteristics of CTS in routine daily practice over a 5-year period, with a review of the literature. METHODS: Patients treated with endocrine therapy (441) were retrospectively analyzed looking for CTS cases in aromatase inhibitors (219, 49.6%) and in tamoxifen (222, 50.3%) patients. We described patient's characteristics and CTS management. We also reviewed the literature reporting CTS in aromatase inhibitors clinical trials...
December 2016: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/27810861/ribociclib-lengthens-breast-cancer-survival
#20
(no author information available yet)
The combination of antiestrogen therapy and ribociclib, an investigational CDK4/6 inhibitor, led to improved outcomes in women with metastatic HR-positive, HER2-negative breast cancer, according to findings presented at a meeting of the European Society for Medical Oncology. The combination significantly increased progression-free survival compared with letrozole alone in a large phase III trial-data that could lead to FDA approval.
December 2016: Cancer Discovery
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