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controlled ovarian stimulation

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https://www.readbyqxmd.com/read/29334208/effects-of-crocin-on-the-pituitary-gonadal-axis-and-hypothalamic-kiss-1-gene-expression-in-female-wistar-rats
#1
Dina Zohrabi, Kazem Parivar, Mohammad Hossein Sanati, Nasim Hayati Roodbari
Background: Saffron (Crocus sativus L.) has been traditionally used as a spice for coloring and flavoring in some countries cuisine. One of the main components of saffron is Crocin. Recent research have shown that crocin has various pharmacological effects. The aim of this study was to assess the effects of crocin on the Pituitary-Gonadal axis and Kiss-1 gene expression in hypothalamus and ovarian tissue organization in female Wistar rats. MATERIALS AND METHODS: In this experimental study, 18 adult female Wistar rats were randomly divided into three groups...
April 2018: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/29334206/decreased-expression-of-arginine-phenylalanine-amide-related-peptide-3-gene-in-dorsomedial-hypothalamic-nucleus-of-constant-light-exposure-model-of-polycystic-ovarian-syndrome
#2
Zahra Shaaban, Mohammad Reza Jafarzadeh Shirazi, Mohammad Hossein Nooranizadeh, Amin Tamadon, Farhad Rahmanifar, Somayeh Ahmadloo, Amin Ramezani, Mohammad Javad Zamiri, Iman Razeghian Jahromi, Fatemeh Sabet Sarvestani, Omid Koohi Hosseinabadi
Background: An abnormality in pulse amplitude and frequency of gonadotropin releasing hormone (GnRH) secretion is the most characteristics of polycystic ovarian syndrome (PCOS). On the other hand, arginine-phenylalanine-amide (RFamide)-related peptide-3 (RFRP3) inhibits the secretion of GnRH in mammalian hypothalamus. The current study performed in order to investigate the expression of RFRP3 mRNA in the dorsomedial hypothalamic nucleus (DMH) after the induction of PCOS in a rat model of constant light exposure, and the possible role of parity on occurrence of PCOS...
April 2018: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/29332135/sequential-versus-simultaneous-use-of-chemotherapy-and-gonadotropin-releasing-hormone-agonist-gnrha-among-estrogen-receptor-er-positive-premenopausal-breast-cancer-patients-effects-on-ovarian-function-disease-free-survival-and-overall-survival
#3
Ying Zhang, Yajie Ji, Jianwei Li, Li Lei, Siyu Wu, Wenjia Zuo, Xiaoqing Jia, Yujie Wang, Miao Mo, Na Zhang, Zhenzhou Shen, Jiong Wu, Zhimin Shao, Guangyu Liu
OBJECTIVE: To investigate ovarian function and therapeutic efficacy among estrogen receptor (ER)-positive, premenopausal breast cancer patients treated with gonadotropin-releasing hormone agonist (GnRHa) and chemotherapy simultaneously or sequentially. METHOD: This study was a phase 3, open-label, parallel, randomized controlled trial (NCT01712893). Two hundred sixteen premenopausal patients (under 45 years) diagnosed with invasive ER-positive breast cancer were enrolled from July 2009 to May 2013 and randomized at a 1:1 ratio to receive (neo)adjuvant chemotherapy combined with sequential or simultaneous GnRHa treatment...
January 13, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29317127/low-dosing-of-gonadotropins-in-in%C3%A2-vitro-fertilization-cycles-for-women-with-poor-ovarian-reserve-systematic-review-and-meta-analysis
#4
Mohamed Abdel-Fattah Youssef, Madelon van Wely, Monique Mochtar, Usama Mohamed Fouda, Ashraf Eldaly, Eman Zein El Abidin, Ahmed Elhalwagy, Ahmed Abdel Mageed Abdallah, Sherif Sameh Zaki, Mohamed Sayed Abdel Ghafar, Mohamed Nagi Mohesen, Fulco van der Veen
OBJECTIVE: To evaluate the effectiveness of low doses of gonadotropins and gonadotropins combined with oral compounds compared with high doses of gonadotropins in ovarian stimulation regimens in terms of ongoing pregnancy per fresh IVF attempt in women with poor ovarian reserve undergoing IVF/intracytoplasmic sperm injection (ICSI) treatment. DESIGN: A systematic review and meta-analysis of randomized controlled studies that evaluate the effectiveness of low dosing of gonadotropins alone or combined with oral compounds compared with high doses of gonadotropins in women with poor ovarian reserve undergoing IVF/ICSI treatment...
January 6, 2018: Fertility and Sterility
https://www.readbyqxmd.com/read/29316020/vitrification-and-in-vitro-culture-had-no-adverse-effect-on-the-follicular-development-and-gene-expression-of-stimulated-human-ovarian-tissue
#5
Mahdi Ramezani, Mojdeh Salehnia, Mina Jafarabadi
AIM: The study assesses the effect of the vitrification procedure on the integrity, morphology, follicular development and gene expression of stimulated human ovarian tissue after warming and two weeks of in vitro culture. METHODS: Ovarian specimens were divided into non-vitrified and vitrified groups and were cultured for two weeks. Morphological analysis and immunohistochemistry were performed. The 17-β estradiol and anti-Müllerian hormone levels in collected media were assessed...
January 5, 2018: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/29303236/andro-ivf-a-novel-protocol-for-poor-responders-to-ivf-controlled-ovarian-stimulation
#6
Ludmila Bercaire, Sara Mb Nogueira, Priscila Cm Lima, Vanessa R Alves, Nilka Donadio, Artur Dzik, Mario Cavagna, Renato Fanchin
OBJECTIVE: This study aimed to assess a novel protocol designed to improve poor ovarian response through intra-ovarian androgenization. The endpoints were: number of oocytes and mature oocytes retrieved, fertilization, cancellation and pregnancy rates. METHODS: This prospective crossover study enrolled poor responders from previous ovarian stimulation cycles submitted to a novel protocol called ANDRO-IVF. The protocol included pretreatment with transdermal AndroGel(r) (Besins) 25 mg, oral letrozole 2...
January 5, 2018: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/29302874/anti-m%C3%A3-llerian-hormone-in-pre-menopausal-females-after-ablative-radioiodine-treatment-for-differentiated-thyroid-cancer
#7
Massimo Giusti, Miranda Mittica, Paola Comite, Claudia Campana, Stefano Gay, Michele Mussap
PURPOSE: In recent years, anti-Mullerian hormone (AMH) has been considered a reliable index of ovarian reserve. There are few data on AMH values in thyroid cancer. The aim of this study was to evaluate AMH levels in pre-menopausal women with a history of low-risk thyroid cancer. METHODS: Thirty-four women (aged 40.7 ± 6.7 years) were studied 7.1 ± 0.9 years after surgery and at least one RAI treatment. A group of 23 thyroid cancer women (41.6 ± 7...
January 4, 2018: Endocrine
https://www.readbyqxmd.com/read/29300975/new-application-of-dydrogesterone-as-a-part-of-a-progestin-primed-ovarian-stimulation-protocol-for-ivf-a-randomized-controlled-trial-including-516-first-ivf-icsi-cycles
#8
Sha Yu, Hui Long, Hannah Ya-Ning Chang, Yali Liu, Hongyuan Gao, Jing Zhu, Xinxin Quan, Qifeng Lyu, Yanping Kuang, Ai Ai
STUDY QUESTION: Can dydrogesterone (DYG) be used as an alternative progestin in a progesterone primed ovarian stimulation (PPOS) protocol? SUMMARY ANSWER: DYG can be used as an appropriate alternative progestin in a PPOS protocol. WHAT IS KNOWN ALREADY: PPOS is a new ovarian stimulation regimen based on a freeze-all strategy that uses progestin as an alternative to a GnRH analog for suppressing a premature LH surge during the follicular phase...
December 29, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29300908/sex-and-age-specific-impact-of-erk-loss-within-the-pituitary-gonadotrope-in-mice
#9
Jessica L Brown, Jianjun Xie, Miguel Brieno Enriquez, Jennifer Sones, Cynthia N Angulo, Ulrich Boehm, Andrew Miller, Chirine Toufaily, Ying Wang, Daniel J Bernard, Mark S Roberson
Extracellular signal-regulated kinase (ERK) signaling regulates hormone action in the reproductive axis, but specific mechanisms have yet to be completely elucidated. In the present study, ERK1 null and ERK2 floxed mice were combined with a gonadotrope-specific Cre (GRIC) driver. Female ERK double knockout (ERKdko) animals were hypogonadotropic, resulting in anovulation and complete infertility. Transcript levels of four gonadotrope-specific genes (GnRHR and the three gonadotropin subunits) were reduced in pituitaries at estrus in ERKdko females and the post-castration response to endogenous GnRH hyper-stimulation was blunted...
January 3, 2018: Endocrinology
https://www.readbyqxmd.com/read/29300901/aromatase-inhibitor-use-during-ovarian-stimulation-suppresses-growth-of-uterine-endometrial-cancer-in-xenograft-mouse-model
#10
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/29288977/maternal-nutritional-restriction-during-late-gestation-impairs-development-of-the-reproductive-organs-in-both-male-and-female-lambs
#11
F Hoffman, E Boretto, S Vitale, V Gonzalez, G Vidal, M F Pardo, M F Flores, F Garcia, G Bagnis, O C M Queiroz, M B Rabaglino
Maternal nutritional restrictions during late gestation could lead to fetal hypoglycemia. Glucose levels in the fetal sheep regulate circulating insulin-like growth factor 1 (IGF1) levels, which stimulate cell proliferation and differentiation of reproductive organs after binding to its own receptor or estrogen receptors. The objective of this study was to determine the effects of subnutrition of ewes during the last trimester of gestation on the serum glucose/IGF1 levels and development of reproductive organs in their lambs...
December 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/29280508/does-freeze-all-policy-affect-ivf-outcomes-in-poor-responders
#12
Matheus Roque, Marcello Valle, Marcos Sampaio, Selmo Geber
OBJECTIVES: To evaluate whether the freeze-all strategy affects in vitro fertilization (IVF) outcomes in poor ovarian responders following the Bologna criteria. METHODS: We performed a retrospective cohort study conducted between January 2012 and December 2016. A total of 433 poor responders (per the Bologna criteria) fulfilled the inclusion/exclusion criteria and were included in the study, with 277 patients included in the fresh group and 156 in the freeze-all group...
December 27, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29279836/evaluation-of-endometrial-angiogenesis-in-mice-uterus-before-implantation-in-natural-cycles-followed-by-use-of-human-menopausal-gonadotropin-human-chorionic-gonadotropin-drugs-and-epigallocatechin-gallate
#13
Bahman Rashidi, Mehrnoush Malekzadeh
Background: Angiogenesis plays a major role in endometrial receptivity and thickening of the endometrium immediately before implantation. The aim of the present work was to evaluate the antiangiogenic properties of epigallocatechin-3-gallate (EGCG) from green tea in angiogenesis of endometrium. Materials and Methods: In this study, forty adult female NMARI mice randomly divided into four groups. Control group received vehicle; human menopausal gonadotropin/human chorionic gonadotropin (HMG/HCG) group received 7...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/29259490/age-specific-serum-anti-m%C3%A3-llerian-hormone-concentration-in-japanese-women-and-its-usefulness-as-a-predictor-of-the-ovarian-response
#14
Yoshimasa Asada, Yoshiharu Morimoto, Yoshiharu Nakaoka, Takahiro Yamasaki, Yutaka Suehiro, Hikaru Sugimoto, Masayuki Yoshida, Minoru Irahara
Purpose: To compare the ovarian response predictive ability of anti-Müllerian hormone (AMH), follicle-stimulating hormone (FSH), and estradiol (E2) and to determine the age-specific distribution of serum AMH concentrations of Japanese women. Methods: This was a multicenter (four-site), observational, analytic, cross-sectional Japanese study consisting of two parts: Study 1 (the prediction of the ovarian response of 236 participants who were undergoing controlled ovarian stimulation [COS]) and Study 2 (the distribution of the AMH concentration with an assay of 417 healthy women who were aged 20-49 years and who had normal menstrual cycles)...
October 2017: Reproductive Medicine and Biology
https://www.readbyqxmd.com/read/29259449/analyzing-the-risk-factors-for-a-diminished-oocyte-retrieval-rate-under-controlled-ovarian-stimulation
#15
Mayumi Nakamura, Yoshiki Yamashita, Atsushi Hayashi, Natsuho Saito, Masae Yu, Masami Hayashi, Yoshito Terai, Masahide Ohmichi
Aim: To investigate which risk factors contribute to a lower oocyte retrieval ratio in women who are receiving controlled ovarian hyperstimulation. Methods: The authors retrospectively analyzed 329 in vitro fertilization (IVF) cycles under controlled ovarian hyperstimulation by using a gonadotropin-releasing hormone antagonist or agonist at Osaka Medical College, Japan. The patients were classified into five groups: advanced age, male infertility, severe endometriosis, tubal infertility, and unexplained infertility...
January 2017: Reproductive Medicine and Biology
https://www.readbyqxmd.com/read/29259033/vasorin-a-newly-identified-regulator-of-ovarian-folliculogenesis
#16
Nitzan Rimon-Dahari, Lia Heinemann-Yerushalmi, Ron Hadas, Lital Kalich-Philosoph, Dafna Ketter, Nava Nevo, Dalia Galiani, Nava Dekel
Members of the TGF-β superfamily take part in the control of folliculogenesis. Vasorin (Vasn) is a newly identified negative regulator of TGF-β signaling whose possible involvement in ovarian physiology has never been studied. Here, we demonstrate that Vasn is expressed in the ovary by somatic cells of follicles, and that its expression is up-regulated by LH. We established a conditional knockout (cKO) mouse model in which Vasn is deleted specifically in granulosa cells of growing follicles from the secondary stage onwards...
December 19, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29258358/the-long-term-effects-of-endometrioma-surgery-on-ovarian-reserve-a-prospective-case-control-study
#17
Ilgın Turkcuoglu, Rauf Melekoglu
The objective of this study was to evaluate the long-term effects of endometrioma excision on ovarian reserve. This study evaluated the long-term effects of endometrioma excision on ovarian reserve. A total of 63 women were enrolled in this prospective case-control study; 21 women had histories of endometrioma surgery (study group), 21 women had diagnoses of endometrioma, and 21 healthy age-matched women served as controls. Participants were recruited from the Department of Obstetrics and Gynecology, Inonu University Faculty of Medicine, between January 2007 and January 2016...
December 19, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29247565/oocyte-oxidative-dna-damage-may-be-involved-in-minimal-mild-endometriosis-related-infertility
#18
Michele Gomes Da Broi, Alceu Afonso Jordão-Jr, Rui Alberto Ferriani, Paula Andrea Navarro
Early endometriosis is associated with infertility, and oxidative stress may play a role in the pathogenesis of disease-related infertility. This prospective case-control study aimed to compare the presence of oxidative stress markers in the follicular microenvironment and systemic circulation of infertile women with minimal/mild endometriosis (EI/II) versus individuals undergoing controlled ovarian stimulation for intracytoplasmic sperm injection (ICSI). Seventy-one blood samples (27 from infertile women with EI/II and 44 controls with tubal and/or male infertility factor) and 51 follicular fluid samples (19 EI/II and 32 controls) were obtained on the day of oocyte retrieval...
December 16, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/29247457/progestin-primed-ovarian-stimulation-with-or-without-clomiphene-citrate-supplementation-in-normal-ovulatory-women-undergoing-ivf-icsi-a-prospective-randomized-controlled-trial
#19
Yali Liu, Qiuju Chen, Sha Yu, Yun Wang, Wen He, Hannah Ya-Ning Chang, Bian Wang, Hongyuan Gao, Hui Long, Li Wang, Qifeng Lyu, Ai Ai, Yanping Kuang
OBJECTIVE: To compare the endocrinological profiles, cycle characteristics and pregnancy outcomes of progestin-primed ovarian stimulation (PPOS) with or without clomiphene citrate (CC) supplementation in normal ovulatory women undergoing in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI). DESIGN: Prospective randomized controlled study. PATIENT(S): A total of 320 infertile women undergoing IVF/ICSI. Medroxyprogesterone acetate (MPA) and human menopausal gonadotropin (hMG) were simultaneously administered on menstrual cycle day 3...
December 16, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29241924/effects-of-growth-hormone-plus-gonadotropins-on-controlled-ovarian-stimulation-in-infertile-women-of-advanced-age-poor-responders-and-previous-in%C3%A2-vitro-fertilization-failure-patients
#20
Yao-Kai Ho, Tsung-Hsien Lee, Chun-I Lee, En-Hui Cheng, Chun-Chia Huang, Lii-Shung Huang, Maw-Sheng Lee
OBJECTIVE: To investigate the effects of growth hormone (GH) cotreatment in ovarian stimulation in infertile women of advanced age, poor responders, and patients with one or more previous IVF treatment failures. MATERIALS AND METHODS: We conducted a retrospective observational study of 436 patients undergoing GH cotreatment in ovarian stimulation. The first arm included 134 infertile women of advanced age. The second arm included 236 patients with one or more IVF previous treatment failures, and the third arm included 66 younger poor responders...
December 2017: Taiwanese Journal of Obstetrics & Gynecology
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