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Stimulation for IVF

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https://www.readbyqxmd.com/read/28535578/coasting-withholding-gonadotrophins-for-preventing-ovarian-hyperstimulation-syndrome
#1
REVIEW
Arianna D'Angelo, Nazar N Amso, Rudaina Hassan
BACKGROUND: Ovarian hyperstimulation syndrome (OHSS) is an iatrogenic and potentially life threatening condition resulting from excessive ovarian stimulation. Reported incidence of moderate to severe OHSS ranges from 0.6% to 5% of in vitro fertilization (IVF) cycles. The factors contributing to OHSS have not been completely explained. The release of vasoactive substances secreted by the ovaries under human chorionic gonadotrophin (hCG) stimulation may play a key role in triggering this syndrome...
May 23, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28533904/-this-is-where-it-all-started-the-pivotal-role-of-plc%C3%AE-within-the-sophisticated-process-of-mammalian-reproduction-a-systemic-review
#2
Itai Gat, Raoul Orvieto
Mammalian reproduction is one of the most complex and fascinating biological phenomenon, which aims to transfer maternal and paternal genetic material to the next generation. At the end of oogenesis and spermatogenesis, both haploid gametes contain a single set of chromosomes ready to form the zygote, the first cell of the newly developing individual. The mature oocyte and spermatozoa remain in a quiescent state, during which the oocyte is characterized by nuclear and cytoplasmic arrest, while the spermatozoa necessitates further maturation within the epididymis and female reproductive track prior to egg fertilization...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/28532740/reduced-intellectual-ability-in-offspring-of-ovarian-hyperstimulation-syndrome-a-cohort-study
#3
Gu-Feng Xu, Cheng-Liang Zhou, Yi-Meng Xiong, Jing-Yi Li, Tian-Tian Yu, Shen Tian, Xian-Hua Lin, Yun Liao, Yuan Lv, Fang-Hong Zhang, Zhi-Wei Liu, Yin-Yin Shi, Yan Shen, Jin Sha, Dan Zhang, Yi-Min Zhu, Jian-Zhong Sheng, He-Feng Huang
BACKGROUND: Ovarian hyperstimulation syndrome (OHSS), a complication of ovarian stimulation, has various adverse effects on both pregnant women and their offspring. However, whether OHSS will affect intellectual ability in offspring is still unknown. METHODS: We recruited 86 Chinese children born to OHSS women and 172 children conceived with non-OHSS In Vitro Fertilization (IVF) in this cohort study. Their intellectual ability was assessed according to the Revised Chinese Version of the Wechsler Intelligence Scale for Children (C-WISC)...
May 18, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28524047/oestrogen-and-progesterone-receptor-in-melanoma-and-nevi-an-immunohistochemical-study
#4
Emi Dika, Pier Alessandro Fanti, Sabina Vaccari, Elisa Capizzi, Alessio Degiovanni, Agnese Gobbi, Bianca Maria Piraccini, Simone Ribero, Carlotta Baraldi, Giulia Maria Ravaioli, Michelangelo Fiorentino, Annalisa Patrizi
The effect of hormonal stimulation and fertility treatments, as well as their role in the development of malignant melanoma (MM), is still to be determined. The aim of this study was to investigate the presence of oestrogen receptor alpha (ERα) and progesterone receptor (PR) in MM and nevi after hormonal stimulation. Immunohistochemical analyses were performed utilizing antibodies specifically directed against ERα and PR in MM and atypical nevi specimens from patients: (1) diagnosed during pregnancy, (2) diagnosed in the six months following delivery, or (3) who had undergone repetitive cycles of hormonal stimulation for in vitro fertilization in the year that preceded MM diagnosis...
May 19, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/28520729/top-quality-blastocyst-formation-rates-in-relation-to-progesterone-levels-on-the-day-of-oocyte-maturation-in-gnrh-antagonist-ivf-icsi-cycles
#5
V S Vanni, E Somigliana, M Reschini, L Pagliardini, E Marotta, S Faulisi, A Paffoni, P Vigano', W Vegetti, M Candiani, E Papaleo
Cycles with progesterone elevation during controlled ovarian stimulation (COS) for IVF/ICSI are commonly managed with a "freeze-all" strategy, due to a well-recognized detrimental effect of high progesterone levels on endometrial receptivity. However, also a detrimental effect of elevated progesterone on day-3 embryo quality has recently been found with regards to top quality embryo formation rate. Because blastocyst culture and cryopreservation are largely adopted, we deemed relevant to determine whether this detrimental effect is also seen on blastocyst quality on day 5-6...
2017: PloS One
https://www.readbyqxmd.com/read/28514122/-is-anti-thrombotic-prophylaxis-warranted-in-fertility-and-in-vitro-fertilization-treatments
#6
REVIEW
Enav Yefet, Amir Weiss
INTRODUCTION: Assisted reproductive technology (ART) treatments are potential risk factors for thromboembolism (TE) due to excessive estrogen levels. Recently, several studies have shed new light on this matter. AIMS: To review the literature to assess the risk for TE during ART and to establish guidelines regarding thrombophylaxis. METHODS: A search was conducted of PubMed, Medline, Cochrane and clinicaltrials.gov. The search terms were fertility, assisted reproductive technology, IVF, thromboembolism, thrombosis and anticoagulation...
July 2016: Harefuah
https://www.readbyqxmd.com/read/28508691/corifollitropin-alfa-compared-with-follitropin-beta-in-gnrh-antagonist-ovarian-stimulation-protocols-in-an-unselected-population-undergoing-ivf-icsi
#7
Charalampos Siristatidis, Konstantinos Dafopoulos, Nikolas Christoforidis, George Anifandis, Vasileios Pergialiotis, Nikolaos Papantoniou
Recombinant DNA technologies have produced Corifollitropin alfa (CFa) used during IVF/ICSI in order to keep the circulating FSH levels above the threshold necessary to support multi-follicular growth for a week. In this prospective case-control study, we compared 70 participants treated with 150 μg CFa combined with 150 IU of follitropin beta (study group) with 70 subfertile participants with matching baseline characteristics, conforming with the same inclusion criteria and treated with an antagonist protocol using follitropin beta (control group)...
May 16, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28505290/supraphysiologic-estradiol-is-an-independent-predictor-of-low-birth-weight-in-full-term-singletons-born-after-fresh-embryo-transfer
#8
N Pereira, R T Elias, P J Christos, A C Petrini, K Hancock, J P Lekovich, Z Rosenwaks
STUDY QUESTION: Is supraphysiologic estradiol (E2) an independent predictor of low birth weight (LBW) in singletons born after fresh IVF-embryo transfer (ET) cycles? SUMMARY ANSWER: Our results suggest that E2 > 2500 pg/ml is an independent predictor for LBW in full-term singletons born to normal responder patients undergoing fresh IVF-ET cycles. WHAT IS KNOWN ALREADY: The pathogenesis of LBW in IVF singletons remains unknown. However, recent studies have suggested that the hyperestrogenic milieu generated during ovarian stimulation may create a sub-optimal peri-implantation environment, leading to placental dysfunction, and therefore, LBW...
May 13, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28501428/management-of-ovarian-stimulation-for-ivf-narrative-review-of-evidence-provided-for-world-health-organization-guidance
#9
REVIEW
Cindy Farquhar, Jane Marjoribanks, Julie Brown, Bart C J M Fauser, Anne Lethaby, Selma Mourad, Robert Rebar, Marian Showell, Sheryl van der Poel
In this paper, a review of evidence provided to the World Health Organization (WHO) guideline development, who prepare global guidance on the management of ovarian stimulation for women undergoing IVF, is presented. The purpose of ovarian stimulation is to facilitate retrieval of multiple oocytes during a single IVF cycle. Availability of multiple oocytes compensates for inefficiencies in subsequent stages of the cycle, which include oocyte maturation, IVF, embryo culture, embryo transfer, and implantation...
April 26, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28501361/intrauterine-insemination-with-gonadotropin-stimulation-or-in%C3%A2-vitro-fertilization-for-the-treatment-of-unexplained-subfertility-a-randomized-controlled-trial
#10
Anupa Nandi, Priya Bhide, Richard Hooper, Anil Gudi, Amit Shah, Khalid Khan, Roy Homburg
OBJECTIVE: To evaluate the best first line management option for the treatment of unexplained subfertility-controlled ovarian hyperstimulation (COH) with gonadotropins and IUI or IVF. DESIGN: Randomized controlled trial. SETTING: Single center trial in a tertiary referral unit. PATIENT(S): Couples with unexplained subfertility. INTERVENTION(S): Couples were randomized to receive either three cycles of IUI + COH or one cycle of IVF...
May 10, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28485664/controlled-ovarian-stimulation-and-ivf-pregnancy-in-a-trisomy-x-carrier-with-associated-hypogonadotropic-hypogonadism
#11
Claudia Massarotti, Patrizia Fiorio, Roberto Gastaldi, Lucia Rosaia De Santis, Daniela Pastorino, Valentino Remorgida, Paola Anserini
We describe successful controlled ovarian stimulation (COS) and the first known IVF pregnancy in a trisomy X carrier with associated hypogonadotropic hypogonadism (HH) linked to a chromosome 4 double mutation in the allele of the Gonadotropins Releasing Hormone receptor (GnRHr) gene. Previous administration of low dose of gonadotropins, as recommended in patients with HH, led to poor follicular recruitment. Since trisomy X is a risk factor for diminished ovarian reserve (DOR) and premature ovarian insufficiency (POI), higher doses of gonadotropins led to better ovarian response...
May 9, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28476487/a-randomized-controlled-trial-comparing-the-efficacy-and-safety-of-two-hmg-preparations-gaining-their-lh-bioactivity-from-different-hcg-sources
#12
Gillian Lockwood, Barbara Cometti, Jeanette Bogstad, Karin Erb, Christian De Geyter, Janos Urbancsek, Silvia Trevisan, Khaled Pocate-Cheriet, Dominique de Ziegler
In this prospective, controlled, randomized, multicentre, non-inferiority study, efficacy and safety of two HMG preparations (Menopur(®)- Ferring and Meriofert®- IBSA Institut Biochimique SA) for ovarian stimulation were compared (270 women undergoing IVF aged between 18 and 39 years; BMI 30 kg/m(2) or less; less than three prior completed assisted reproduction technique cycles). A standard long down-regulation with gonadotrophin-releasing hormone agonist protocol, with HCG triggering was used; primary end-point was total number of oocytes retrieved; attention was paid toovarian hyperstimulation syndrome (OHSS)...
April 20, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28473127/long-term-breast-cancer-risk-following-ovarian-stimulation-in-young-egg-donors-a-call-for-follow-up-research-and-informed-consent
#13
Jennifer Schneider, Jennifer Lahl, Wendy Kramer
In the USA and other countries, oocyte donation is gaining increasing importance. Although sufficient data exist on procedure-associated short-term risks for oocyte donors, such as ovarian hyperstimulation syndrome, long-term follow-up studies of egg donors are lacking and their health risks are unknown. The lack of information may be misleadingly interpreted as lack of risk. Long-term hormone replacement therapy is recognized as a risk factor for breast cancer; the breast cancer risk of ovarian stimulation for egg donors is unknown but is a possibility...
May 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28472976/the-effect-of-dehydroepiandrosterone-supplementation-on-ovarian-response-is-associated-with-androgen-receptor-in-diminished-ovarian-reserve-women
#14
Qiaofei Hu, Liming Hong, Mingyue Nie, Qin Wang, Ying Fang, Yinmei Dai, Yanhong Zhai, Shuyu Wang, Chenghong Yin, Xiaokui Yang
BACKGROUND: Diminished ovarian reserve(DOR) is associated with female infertility and poor response to ovarian stimulation. Our objective was to assess the effect of dehydroepiandrosterone(DHEA) on DOR women and to explore whether the improvement of ovarian response after DHEA supplementation was dependent on the expression levels of androgen receptor(AR). METHODS: A prospective cohort study was performed in the Department of Human Reproductive Medicine, Beijing Obstetrics and Gynecology Hospital during August 2014 to August 2016...
May 4, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28472405/the-ovarian-response-in-fragile-x-patients-and-premutation-carriers-undergoing-ivf-pgd-reappraisal
#15
Sarit Avraham, Benny Almog, Adi Reches, Liat Zakar, Mira Malcov, Amit Sokolov, Sharon Alpern, Foad Azem
STUDY QUESTION: What is the association between the ovarian response and the number of CGG repeats among full mutation and premutation carriers of fragile X (FMR1), undergoing controlled ovarian hyperstimulation (COH) for PGD? SUMMARY ANSWER: Ovarian response was normal in full mutation patients but decreased in premutation carriers, although the number of repeats was not statistically significantly associated with the number of oocytes retrieved. WHAT IS KNOWN ALREADY: There is inconsistent data in the literature regarding ovarian response in FMR1 carriers...
May 3, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28467764/anovulatory-patients-demonstrate-a-sharp-decline-in-lh-levels-upon-gnrh-antagonist-administration-during-ivf-cycles
#16
Linoy Segal, Ofer Fainaru, Shahar Kol
To evaluate the decrease in luteinizing hormone (LH) levels following gonadotropin-releasing hormone (GnRH) antagonist administration in in vitro fertilization (IVF) cycles, data were retrospectively collected from 305 consecutive IVF or intracytoplasmic sperm injection (ICSI) cycles of patients who underwent ovarian stimulation with gonadotropins and were treated with GnRH antagonist for the prevention of premature luteinization. We compared the percent change in LH concentration from stimulation start to that observed before ovulation triggering in patients with or without anovulation...
April 28, 2017: Rambam Maimonides Medical Journal
https://www.readbyqxmd.com/read/28466814/association-of-leukemia-inhibitory-factor-gene-polymorphism-and-in-vitro-fertilization-outcome-in-a-population-in-northern-iran
#17
M Alipour, F Mashayekhi, Z Salehi
Several studies have been demonstrated that endometrial leukemia inhibitory factor (LIF) is important in embryo implantation. LIF is a secreted glycoprotein with a variety of biological functions including stimulation of cell proliferation, differentiation and survival that are all essential for blastocyete development and implantation. The LIF receptor activates several signaling pathways in diverse cell types, including Jak/STAT, MAPK and PI3-kinase pathways in the endometrium of fertile woman. It has been suggested that the initial lower expression of LIF in proliferative phase may be one of the causes for multiple failure of implantation...
March 31, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28461237/-ovarian-hyperstimulation-syndrome-after-stimulation-with-highly-purified-hmgfor-in-vitro-fertilization-observational-study-shoview
#18
P Barrière, D Dewailly, A Duhamel, V Gayet
OBJECTIVE: Data on the incidence and severity of ovarian hyperstimulation syndrome (OHSS) in France are limited. METHODS: Prospective observational multicentric study (23 French centers of IVF) in a cohort of 421 women treated with highly purified hMG (HP-hMG) for the first or second cycle of IVF with or without ICSI. The primary objective was to assess the incidence of moderate to severe OHSS in this cohort. RESULTS: At inclusion, 172 patients (40...
May 2017: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/28461075/rfsh-in-medically-assisted-procreation-evidence-for-ovarian-follicular-hyperplasia-and-interest-of-mass-spectrometry-to-measure-17-hydroxyprogesterone-and-%C3%AE-4-androstenedione-in-serum
#19
M C Menet, M L Hebert-Schuster, N Lahlou, L Marcellin, M C Leguy, V Gayet, J Guibourdenche
Ovarian monitoring requires the determination of serum estradiol and progesterone levels. We investigated whole follicular steroidogenesis under rFSH in medically assisted procreation (MAP: 26 IVF, 24 ICSI) compared to 11 controls (IUI). Estrone, estradiol, Δ4-androstenedione, testosterone, progesterone and 17-hydroxyprogesterone were measured by immunoassay and mass spectrometry except for estrogens. At the start of a spontaneous or induced cycle, steroids levels fluctuated within normal ranges: estradiol (314-585 pmol/L), estrone (165-379 pmol/L) testosterone (1...
April 28, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28458301/ultrastructural-characteristics-of-human-oocytes-vitrified-before-and-after-in-vitro-maturation
#20
Yolanda Segovia, Noemí Victory, Irene Peinado, Laura M García-Valverde, Magdalena García, Jon Aizpurua, Ana Monzó, María José Gómez-Torres
The development of an effective program that combines in vitro maturation (IVM) and cryopreservation for immature oocytes would represent a novel advance for in vitro fertilization (IVF), especially as a means to preserve the fertility of women in unique situations. The aim of this study was to analyze the ultrastructural characteristics of human oocytes, obtained after controlled ovarian stimulation, to determine whether IVM is best performed before or after vitrification. To this end, we analyzed the following features in a total of 22 MII oocytes: size, zona pellucida and perivitelline space, mitochondria number, M-SER (mitochondria-smooth endoplasmic reticulum) aggregates and M-V (mitochondria-vesicle) complexes, the number of cortical granules and microvilli, and the presence of vacuolization using transmission electron microscopy (TEM)...
April 30, 2017: Journal of Reproduction and Development
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