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Ovulation induction

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https://www.readbyqxmd.com/read/29757396/hetero-fertilization-along-with-failed-egg-sperm-cell-fusion-supports-single-fertilization-involved-in-in-vivo-haploid-induction-in-maize
#1
Xiaolong Tian, Yuanxin Qin, Baojian Chen, Chenxu Liu, Lele Wang, Xingli Li, Xin Dong, Liwei Liu, Shaojiang Chen
In vivo doubled-haploid technology is widely applied in commercial maize breeding programs owing to its time-saving and cost-reducing features. The production of maize haploids primarily depends on the use of the Stock6-derived haploid inducer lines. Although the gene underlying haploid induction, MTL/ZmPLA1/NLD, was cloned recently, the mechanism of haploid induction is still unknown. Hetero-fertilization can occur via a single fertilization, which pave a way to investigate single-fertilization events by studying the hetero-fertilization phenomenon...
May 11, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29743106/the-foam-study-is-hysterosalpingo-foam-sonography-hyfosy-a-cost-effective-alternative-for-hysterosalpingography-hsg-in-assessing-tubal-patency-in-subfertile-women-study-protocol-for-a-randomized-controlled-trial
#2
Joukje van Rijswijk, Nienke van Welie, Kim Dreyer, Machiel H A van Hooff, Jan Peter de Bruin, Harold R Verhoeve, Femke Mol, Kimiko A Kleiman-Broeze, Maaike A F Traas, Guido J J M Muijsers, Arentje P Manger, Judith Gianotten, Cornelia H de Koning, Aafke M H Koning, Neriman Bayram, David P van der Ham, Francisca P J M Vrouenraets, Michaela Kalafusova, Bob I G van de Laar, Jeroen Kaijser, Miriam F van Oostwaard, Wouter J Meijer, Frank J M Broekmans, Olivier Valkenburg, Lucy F van der Voet, Jeroen van Disseldorp, Marieke J Lambers, Henrike E Peters, Marit C I Lier, Cornelis B Lambalk, Madelon van Wely, Patrick M M Bossuyt, Jaap Stoker, Fulco van der Veen, Ben W J Mol, Velja Mijatovic
BACKGROUND: Tubal pathology is a causative factor in 20% of subfertile couples. Traditionally, tubal testing during fertility work-up is performed by hysterosalpingography (HSG). Hysterosalpingo-foam sonography (HyFoSy) is a new technique that is thought to have comparable accuracy as HSG, while it is less expensive and more patient friendly. HyFoSy would be an acceptable alternative for HSG, provided it has similar effectiveness in terms of patient outcomes. METHODS/DESIGN: We aim to compare the effectiveness and costs of management guided by HyFoSy or by HSG...
May 9, 2018: BMC Women's Health
https://www.readbyqxmd.com/read/29738181/-repeated-superovulation-induction-after-failure-in-previous-ivf-et-cycles-with-the-ultra-long-protocol-analysis-of-outcomes-of-clinical-pregnancy
#3
Bin Wang, Na Kong, Jing-Yu Liu, Ning-Yuan Zhang, Ying-Chun Zhu, Jian-Jun Zhou
Objective: To analyze the clinical outcomes of repeated superovulation induction in patients with adenomyosis or moderate to severe pelvic endometriosis after failure in previous IVF-ET cycles with the ultra-long protocol. METHODS: We retrospectively analyzed the clinical data about 37 patients with adenomyosis or moderate to severe pelvic endometriosis in our center from 2009 to 2013, who underwent repeated IVF-ET after failure in the previous cycles with the ultra-long protocol, namely by injection of 2-6 ampoules of 3...
December 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
https://www.readbyqxmd.com/read/29732159/ultrasound-imaging-improves-hormone-therapy-strategies-for-induction-of-ovulation-and-in-vitro-fertilization-in-the-endangered-dusky-gopher-frog-lithobates-sevosa
#4
Katherine M Graham, Cecilia J Langhorne, Carrie K Vance, Scott T Willard, Andrew J Kouba
Establishing captive breeding populations of amphibians is an important conservation strategy to safeguard against ongoing declines of wild populations and provide broodstock for reintroduction programs. The endangered dusky gopher frog (DGF) has never naturally reproduced in captivity and requires breeding intervention to sustain the population. Methods for inducing ovulation in female DGFs using hormone therapies have not been evaluated. To address this need, we tested four exogenous hormone treatments to induce ovulation in DGFs ( n = 11/treatment), including: treatment (A) gonadotropin-releasing hormone agonist (GnRHa); (B) GnRHa with dopamine antagonist metoclopramide hydrochloride; (C) GnRHa and human chorionic gonadotropin (hCG) and (D) GnRHa with hCG following two low hCG priming doses...
2018: Conservation Physiology
https://www.readbyqxmd.com/read/29716588/prostaglandin-e2-involvement-in-mammalian-female-fertility-ovulation-fertilization-embryo-development-and-early-implantation
#5
REVIEW
Jean Damascene Niringiyumukiza, Hongcai Cai, Wenpei Xiang
BACKGROUND: Infertility in mammalian females has been a challenge in reproductive medicine. The causes of female infertility include anovulation, ovulated oocyte defects, abnormal fertilization, and insufficient luteal support for embryo development, as well as early implantation. Ovulation induction, in vitro fertilization and luteal support regimens have been performed for decades to increase fertility rates. The identification of proteins and biochemical factors involved in female reproduction is essential to further increase female fertility rates...
May 1, 2018: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/29707935/do-serum-vitamin-d-levels-have-any-effect-on-intrauterine-insemination-success
#6
Nafiye Yilmaz, Ebru Ersoy, Aytekin Tokmak, Ayla Sargin, A Seval Ozgu-Erdinc, Salim Erkaya, Halil Ibrahim Yakut
Background: Recent studies have shown that vitamin D has an essential role in the reproductive system. In this study, we aimed to investigate the effect of vitamin D levels in patients undergoing ovulation induction (OI), and subsequent intrauterine insemination (IUI) procedure. MATERIALS AND METHODS: One hundred and four infertile and one hundred and three fertile women were recruited in this cross-sectional study which was conducted in a tertiary level maternity hospital...
July 2018: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/29706932/potential-functions-of-igfbp-2-for-ovarian-folliculogenesis-and-steroidogenesis
#7
REVIEW
Marion Spitschak, Andreas Hoeflich
Ovarian follicles, as transient structural and functional complexes with the oocyte and the associated cells, determine the female reproductive cycle and thus fertility. Ovarian function is subject to the strict control of hormones and growth factors and thus regulated by auto-, para-, and endocrine mechanisms but influenced also by endogenous factors. During the waves of follicular growth and development, one follicle (monoovulatory) or a limited number of them (polyovulatory) are selected under hypothalamic-gonadal control for maturation until ovulation, resulting in the fertile oocyte...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29696918/-efficacy-of-acupuncture-as-adjunctive-treatment-on-infertility-patients-with-polycystic-ovary-syndrome
#8
Juan Xu, Yu Zuo
OBJECTIVE: To observe the efficacy differences between acupuncture combined with medication and medication alone for infertility patients with polycystic ovary syndrome (PCOS). METHODS: According to random number table, a total of 60 infertility patients with PCOS were randomly assigned into an observation group and a control group, 30 cases in each one. The patients in the control group were treated with diane-35 from the 3rd day into menstruation, and one menstrual cycle was taken as a session of treatment...
April 12, 2018: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
https://www.readbyqxmd.com/read/29692680/microdissection-testicular-sperm-extraction-in-five-japanese-patients-with-non-mosaic-klinefelter-s-syndrome
#9
Makoto Chihara, Kanna Ogi, Tatsuya Ishiguro, Kunihiko Yoshida, Chikako Godo, Koichi Takakuwa, Takayuki Enomoto
Cases: Microdissection testicular sperm extraction (micro-TESE) was performed on five Japanese men with non-mosaic Klinefelter's syndrome (KS) and non-obstructive azoospermia in the authors' department. Here is reported the operative results and partner's clinical course for two cases where spermatozoa could be acquired. Also encountered was a man with non-mosaic KS with the partial deletion of azoospermia factor (AZF)b. Because this is rare, it is reported in detail in the context of the previous literature...
April 2018: Reproductive Medicine and Biology
https://www.readbyqxmd.com/read/29681721/progesterone-hypersensitivity-a-challenge-for-luteal-support
#10
Astha Gupta, Deepak Goenka, Mohan L Goenka
Progesterone hypersensitivity is a rare phenomenon which can occur after both endogenous and exogenous exposures. We present a case of hypersensitivity to various forms and routes of exogenous progesterone. A 27-year-old female presented with primary infertility. Investigations revealed Grade 1 endometriosis and polycystic ovary syndrome. Three cycles of intrauterine insemination were attempted which were unsuccessful and in vitro fertilization was proceeded. Six blastocysts of Grade A were formed and cryopreserved...
January 2018: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/29681714/tamoxifen-is-better-than-low-dose-clomiphene-or-gonadotropins-in-women-with-thin-endometrium-7-mm-after-clomiphene-in-intrauterine-insemination-cycles-a-prospective-study
#11
Sunita Sharma, Geetha Rani, Gunja Bose, Indranil Saha, Sikha Bathwal, B N Chakravarty
Aim: Gonadotropin stimulation is used as the second line of treatment in patients with thin endometrium following clomiphene citrate (CC) administration, which is associated with higher cost, multiple births, and ovarian hyperstimulation syndrome. Tamoxifen (TMX), a selective estrogen receptor modulator, acts as an agonist on the endometrium. The objective of the present study was to compare the efficacy of low-dose CC, TMX, and gonadotropins in women with thin endometrium (<7 mm) following Clomiphene in intrauterine insemination (IUI) cycles...
January 2018: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/29680465/treatment-strategies-and-cumulative-live-birth-rates-in-who-ii-ovulation-disorders
#12
Sanne C Braam, Jan Peter de Bruin, Erato T I A Buisman, Monique Brandes, Willianne L D M Nelen, Jesper M J Smeenk, Jan Willem van der Steeg, Ben Willem J Mol, Carl J C M Hamilton
OBJECTIVE: To assess the live birth rate in women with WHO II anovulation and the proportion of women that need second or third line treatments if the initial therapy fails. STUDY DESIGN: In this multicenter cohort study we included couples with unfulfilled child wish who were referred to three fertility clinics in the Netherlands and selected women with a WHO II ovulation disorder as the only final infertility diagnosis (n = 468). RESULTS: The cumulative live birth rate of the total group was 82% (383/468)...
April 10, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29676585/modified-hmg-stimulated-an-effective-option-in-endometrial-preparation-for-frozen-thawed-embryo-transfer-in-patients-with-normal-menstrual-cycles
#13
Pinxiu Huang, Lihong Wei, Xinlin Li, Zhong Lin
To evaluate the clinical efficacy of modified human menopausal gonadotropin (hMG) stimulated, hormone replacement therapy (HRT), natural cycling and letrozole ovulation induction during endometrial preparation for frozen-thawed embryo transfer (FET) in patients with normal menstrual cycles. This retrospective analysis included a total of 5070 cycles of patients with normal menstrual patterns who underwent FET between October 2009 and September 2015. The patients were divided into four groups according to the method of endometrial preparation for FET: 1838 cycles were natural, 1666 underwent HRT, 340 underwent letrozole ovulation induction and 1226 underwent modified hMG stimulated...
April 20, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29673662/the-influence-of-ovarian-hyperstimulation-drugs-on-morphometry-and-morphology-of-human-oocytes-in-icsi-program
#14
Fatemeh Taheri, Arezoo Alemzadeh Mehrizi, Mohammad Ali Khalili, Iman Halvaei
OBJECTIVE: To compare the influences of controlled ovarian hyperstimulation (COH) drugs using recombinant follicular stimulating hormone (rFSH) versus human menopausal gonadotropins (hMG) on morphometry and morphology of MII oocytes in ICSI cycles. MATERIALS AND METHODS: In this prospective study, 363 MII oocytes from 50 ICSI cycles with male factor infertility were evaluated. The patients were divided into two groups according to the protocols of COH: I- rFSH and II- hMG...
April 2018: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29662710/natural-cycle-versus-artificial-cycle-in-frozen-thawed-embryo-transfer-a-randomized-prospective-trial
#15
Marzieh Agha-Hosseini, Leila Hashemi, Ashraf Aleyasin, Marzieh Ghasemi, Fatemeh Sarvi, Maryam Shabani Nashtaei, Mahshad Khodarahmian
Objective: To investigate whether there was a difference in pregnancy outcomes between modified natural cycle frozen-thawed embryo transfer (NC-FET) cycles and artificial cycles (AC)-FET in women who all had regular menstrual cycles. Materials and Methods: One hundred seventy patients who met the inclusion criteria and had at least two cryopreserved embryos were included in a prospective randomized controlled trial. Eighty-five patients were randomized based on Bernoulli distribution into the following two groups: 1) Modified NC-FET using human chorionic gonadotropin for ovulation induction and 2) AC-FET, in which endometrial timing was programmed with estrogen and progesterone...
March 2018: Turkish Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29661236/clinical-analysis-of-50-patients-with-heterotopic-pregnancy-after-ovulation-induction-or-embryo-transfer
#16
Zaigui Wu, Xinmei Zhang, Ping Xu, Xiufeng Huang
OBJECTIVES: The purpose of this study was to evaluate the clinical characteristics, prenatal diagnosis, and management of patients with heterotopic pregnancy after ovulation induction or embryo transfer. METHODS: This was a retrospective study of fifty cases with heterotopic pregnancy, in which the fertilization way, type and number of embryo transferred, gestational age, clinical presentation and outcome of intrauterine, ultrasound presentation and site of ectopic pregnancy, bilateral fallopian tube and treatment were evaluated...
April 16, 2018: European Journal of Medical Research
https://www.readbyqxmd.com/read/29659700/sex-steroids-drive-the-remodeling-of-oviductal-extracellular-matrix-in-cattle
#17
Angela Maria Gonella-Diaza, Fernando Silveira Mesquita, Everton Lopes, Kauê Ribeiro da Silva, Bruno Cogliati, Ricardo De Francisco Strefezzi, Mario Binelli
The extracellular matrix (ECM) is a group of molecules that offer structural and biochemical support to cells and interact with them to regulate their function. Also, growth factors (GFs) stored in the ECM can be locally released during the ECM remodeling process. Here, we hypothesize that the balance between ECM components and remodelers is regulated according to the ovarian steroid milieu to which the oviduct is exposed during the periovulatory period. Follicular growth was manipulated to generate cows that ovulated small follicles (SF-SCL; n = 20) or large follicles (LF-LCL; n = 21) and possess corresponding Estradiol (E2) and Progesterone (P4) plasmatic concentrations...
April 5, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29656770/assisted-reproduction-in-the-female-cat
#18
REVIEW
Aime K Johnson
Assisted reproduction in the queen can range from simple ovulation induction to more advanced techniques such as in vitro fertilization. This article describes techniques available and the success associated with each.
April 12, 2018: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/29656071/-natural-cycle-for-frozen-thawed-embryo-transfer-spontaneous-ovulation-or-triggering-by-hcg
#19
S Huberlant, M Vaast, T Anahory, M L Tailland, N Rougier, N Ranisavljevic, S Hamamah
OBJECTIVE: To compare frozen-thawed embryo transfer (FET) outcomes in natural cycles according to ovulation induction: spontaneous versus recombinant human chorionic gonadotrophin (r-hCG) triggering. METHODS: This retrospective study included all patients monitored for natural cycle FET during one year. When serial monitoring were performed until spontaneous LH rise, patients were included in group A (n=38) whereas those receiving r-hCG for ovulation triggering formed group B (n=43)...
April 11, 2018: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/29648638/ovulatory-induction-of-scg2-in-human-non-human-primate-and-rodent-granulosa-cells-stimulates-ovarian-angiogenesis
#20
Patrick R Hannon, Diane M Duffy, Katherine L Rosewell, Mats Brännström, James W Akin, Thomas E Curry
The luteinizing hormone (LH) surge is essential for ovulation, but the intrafollicular factors induced by LH that mediate ovulatory processes (e.g. angiogenesis) are poorly understood, especially in women. The role of secretogranin II (SCG2) and its cleaved bioactive peptide, secretoneurin (SN), were investigated as potential novel mediators of ovulation by testing the hypothesis that SCG2/SN is induced in granulosa cells by human chorionic gonadotropin (hCG), via a downstream LH receptor signaling mechanism, and stimulates ovarian angiogenesis...
April 10, 2018: Endocrinology
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