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Follitropin beta

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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
#1
COMPARATIVE STUDY
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)...
December 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/25492411/corifollitropin-alfa-compared-with-follitropin-beta-in-poor-responders-undergoing-icsi-a-randomized-controlled-trial
#2
RANDOMIZED CONTROLLED TRIAL
E M Kolibianakis, C A Venetis, J K Bosdou, L Zepiridis, K Chatzimeletiou, A Makedos, S Masouridou, S Triantafillidis, A Mitsoli, B C Tarlatzis
STUDY QUESTION: Does substituting 150 µg corifollitropin alfa for 450 IU follitropin beta during the first 7 days of ovarian stimulation in proven poor responders, result in retrieval of a non-inferior number (<1.5 fewer) of cumulus oocyte complexes (COCs)? SUMMARY ANSWER: A single s.c. dose of 150 µg corifollitropin alfa on the first day of ovarian stimulation, followed if necessary, from Day 8 onwards, with 450 IU of follitropin beta/day, is not inferior to daily doses of 450 IU follitropin beta...
February 2015: Human Reproduction
https://www.readbyqxmd.com/read/24648576/in-vivo-evaluation-of-the-genotoxic-effects-of-gonadotropins-on-rat-reticulocytes
#3
Bulent Duran, Onder Koc, Safak Ozdemirci, Ata Topcuoglu, Ozturk Ozdemir
BACKGROUND: Gonadotropins, as ovulation-inducing drugs, have been used widely to treat infertility. An epidemiologic correlation between infertility therapy and ovarian cancer development has been reported. However, the effect of gonadotropins in the formation of reproductive tract cancers is controversial. OBJECTIVE: The aim of the study was to determine the in vivo genotoxic effects of gonadotropins on rat reticulocytes. METHODS: In this prospective, randomized, controlled study, rats were randomly assigned to 1 of 5 groups...
April 2011: Current Therapeutic Research, Clinical and Experimental
https://www.readbyqxmd.com/read/24592042/a-new-way-of-setting-rfsh-deposit-a-case-of-severe-injection-error-in-ivf-icsi-cycle-ending-with-live-birth
#4
Richard Bernhard Mayer, Thomas Ebner, Omar Shebl, Gernot Tews
a 25- year old woman with secondary infertility caused by a male factor was enrolled in our IVF/ICSI-ET program. Stimulation was performed in a long- protocol and ovarian stimulation, using rFSH follitropin beta, starting on the third day of the menstrual cycle. The rFSH dose per day was 900 IU-0 IU-0 IU-0 IU. Due to normal ovarian response and follicle growth, stimulation was continued and there was no detriment in oocyte quality and no symptoms of OHSS. Following blastocyte transfer cesarean section was unpreventable at 37+5 weeks of gestation due to an impacted transverse lie...
2012: Journal of the Turkish German Gynecological Association
https://www.readbyqxmd.com/read/22736041/comparison-of-different-starting-gonadotropin-doses-50-75-and-100-iu-daily-for-ovulation-induction-combined-with-intrauterine-insemination
#5
COMPARATIVE STUDY
Robert Streda, Tonko Mardesic, Vladimir Sobotka, Dana Koryntova, Lucie Hybnerova, Martin Jindra
PURPOSE: To prevent multiple pregnancies the goal of ovulation induction by gonadotropins is to achieve only mono-follicular development. The most important issue is therefore to determine the starting dose. The aim of this study is to compare three different starting doses of follitropin beta to assess the lowest effective dose. METHODS: We evaluated 92 cycles with ovarian stimulation for patients with unexplained infertility, anovulatory disorder or mild male factor...
October 2012: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/22188108/chronic-cigarette-smoking-alters-circulating-sex-hormones-and-neuroactive-steroids-in-premenopausal-women
#6
M Dušková, K Simůnková, M Hill, M Velíková, J Kubátová, L Kancheva, H Kazihnitková, H Hruškovičová, H Pospíšilová, B Rácz, M Salátová, V Cirmanová, E Králíková, L Stárka, A Pařízek
Chronic smoking alters the circulating levels of sex hormones and possibly also the neuroactive steroids. However, the data available is limited. Therefore, a broad spectrum of free and conjugated steroids and related substances was quantified by GC-MS and RIA in premenopausal smokers and in age-matched (38.9+/-7.3 years of age) non-smokers in the follicular (FP) and luteal phases (LP) of menstrual cycle (10 non-smokers and 10 smokers, in the FP, and 10 non-smokers and 8 smokers in the LP). Smokers in both phases of the menstrual cycle showed higher levels of conjugated 17-hydroxypregnenolone, 5alpha-dihydroprogesterone, conjugated isopregnanolone, conjugated 5alpha-pregnane-3beta,20alpha-diol, conjugated androstenediol, androstenedione, testosterone, free testosterone, conjugated 5alpha-androstane-3alpha/beta,17beta-diols, and higher free testosterone index...
2012: Physiological Research
https://www.readbyqxmd.com/read/21815699/corifollitropin-alfa-a-review-of-its-use-in-controlled-ovarian-stimulation-for-assisted-reproduction
#7
REVIEW
Jamie D Croxtall, Kate McKeage
Corifollitropin alfa (Elonva®) is a fusion product of human follicle-stimulating hormone (FSH) and the C-terminal peptide of the β-subunit of human chorionic gonadotropin (hCG) produced by recombinant DNA technology. It has the same pharmacologic activity as FSH and recombinant FSH (rFSH; follitropin alfa; follitropin beta), but with a slower absorption and a longer half-life. Corifollitropin alfa is indicated as a multifollicular stimulant for women undergoing controlled ovarian stimulation using gonadotropin-releasing hormone (GnRH) antagonist-assisted reproduction protocols...
August 1, 2011: BioDrugs: Clinical Immunotherapeutics, Biopharmaceuticals and Gene Therapy
https://www.readbyqxmd.com/read/21649994/-comparison-of-human-chorionic-gonadotropin-pregnyl-10-000-iu-i-m-versus-gnrh-agonist-triptorelin-0-2-mg-s-c-for-final-oocytes-maturation-in-the-same-egg-donors-clinical-and-embryological-characteristics
#8
COMPARATIVE STUDY
R Streda, T Mardesic, V Sobotka, D Koryntová, L Hybnerová, M Jindra, V Paseková, J Slámová, M Stevíková, J Voboril, L Jelínková, S Vilímová, J Ichová, J Mádrová, H Tersová, M Masata, J Sobotková
OBJECTIVE: To compare clinical and embryological characteristics in donor cycles triggered for final oocytes maturation with Pregnyl 10 000 IU i.m. versus triptorelin 0.2 mg s.c. in the same patients in two sequential stimulation cycles. The aim of the study is to decrease the risk of the development of ovarian hyperstimulation syndrome (OHSS) at high response donors by the replacement of Pregnyl 10 000 IU i.m. vs. triptorelin 0.2 mg s.c. The administration of a single dose of gonadotropin-releasing hormone agonist (triptorelin 0...
April 2011: Ceská Gynekologie
https://www.readbyqxmd.com/read/21482374/effects-of-gonadotropins-gonal-f-and-puregon-on-human-endometrial-cell-proliferation-in-vitro
#9
Chi-Chen Chang, Yao-Yuan Hsieh, Kung-Hao Hsu, Chih-Sheng Lin
CONDENSATION: Both Gonal-F and Puregon, especially in their high-dosage administration, might inhibit the endometrial cell proliferation in the initial 48-hour culture. After 72-hour culture, Gonal-F persisted the inhibition of the endometrial growth, whereas Puregon reversed its effect to enhance endometrial growth. OBJECTIVES: Endometrial proliferation or regeneration during menstrual cycle is regulated by sexual hormones. However, the effect of gonadotropins on the endometrial cell growth remains obscure...
March 2011: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/21072289/review-of-the-safety-efficacy-costs-and-patient-acceptability-of-recombinant-follicle-stimulating-hormone-for-injection-in-assisting-ovulation-induction-in-infertile-women
#10
Marleen Nahuis, Fulco van der Veen, Jur Oosterhuis, Ben Willem Mol, Peter Hompes, Madelon van Wely
Anovulation is a common cause of female subfertility. Treatment of anovulation is aimed at induction of ovulation. In women with clomiphene-citrate resistant WHO group II anovulation, one of the treatment options is ovulation induction with exogenous follicle-stimulating hormone (FSH or follitropin). FSH is derived from urine or is produced as recombinant FSH. Two forms of recombinant FSH are available - follitropin alpha and follitropin beta. To evaluate the efficacy, safety, costs and acceptability of recombinant FSH, we performed a review to compare recombinant FSH with urinary-derived FSH products...
2010: International Journal of Women's Health
https://www.readbyqxmd.com/read/20843323/patient-evaluation-of-the-use-of-follitropin-alfa-in-a-prefilled-ready-to-use-injection-pen-in-assisted-reproductive-technology-an-observational-study
#11
MULTICENTER STUDY
J Thomas Welcker, Frank Nawroth, Wilma Bilger
BACKGROUND: Self-administration of recombinant human follicle-stimulating hormone (r-hFSH) can be performed using injection pen devices by women undergoing assisted reproductive technology procedures. The objective of this study was to explore the use of the prefilled follitropin alfa pen in routine assisted reproductive technology procedures in Germany. METHODS: This prospective, observational study was conducted across 43 German IVF centres over a period of 1...
2010: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/19167716/efficient-isolation-of-the-subunits-of-recombinant-and-pituitary-glycoprotein-hormones
#12
C M Carvalho, J E Oliveira, B E Almeida, E K M Ueda, P A Torjesen, P Bartolini, M T C P Ribela
Complete dissociation into subunits was attained by incubating Chinese hamster ovary (CHO)-derived or native human thyrotropin, follitropin and lutropin overnight at 37 degrees C in acetic acid. The alpha-and beta-subunits of the pituitary glycoprotein hormones were rapidly and quantitatively isolated by reversed-phase high-performance liquid chromatography (RP-HPLC). A dissociation efficiency of > 98% was obtained on the basis of mass determinations of the heterodimers and subunits carried out via mass spectrometry...
February 27, 2009: Journal of Chromatography. A
https://www.readbyqxmd.com/read/18851846/follitropin-alpha-gonal-f-versus-follitropin-beta-puregon-in-controlled-ovarian-hyperstimulation-for-in-vitro-fertilization-is-there-any-difference
#13
COMPARATIVE STUDY
Raoul Orvieto, Ravit Nahum, Jacob Rabinson, Jacob Ashkenazi, Eyal Y Anteby, Simion Meltcer
In an attempt to examine and compare the effect of the two commercially available recombinant FSH on ovarian stimulation characteristics and IVF cycle outcome, we studied 264 IVF cycles in patients with a favorable prognosis a priori, 198 in patients using follitropin-alpha, and 68 in patients using follitropin-beta. Although both groups achieved a comparable number of retrieved oocytes, the use of follitropin-beta was associated with a tendency toward a lower clinical pregnancy rate (PR), and with significantly higher E(2) levels despite the use of significantly lower total gonadotropin dose...
April 2009: Fertility and Sterility
https://www.readbyqxmd.com/read/18613858/comparison-of-follitropin-beta-administered-by-a-pen-device-with-conventional-syringe-in-an-art-programme-a-retrospective-study
#14
COMPARATIVE STUDY
G A Rama Raju, K Suryanarayana, G Jaya Prakash, K Murali Krishna
OBJECTIVES: This study compares the efficacy and patient tolerance of follitropin-beta (recagon) administered using a pen device with conventional syringe in infertile couples undergoing in vitro fertilization/intracytoplasmic sperm injection treatment. METHODS: Data for 481 patients were retrieved retrospectively for the analysis. Conventional syringe group constituted 204 patients with 217 cycles and 265 patients with 294 cycles in the pen-device group. Down-regulation was achieved with GnRH agonist...
August 2008: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/18567427/-mono-follicular-development-the-objective-of-ovulation-induction-with-follitropin-beta-combined-with-intrauterine-insemination
#15
R Streda, J Stepán, J Tosner
OBJECTIVE: To assess the effect of different starting follitropin's beta dose (50 IU, 75 IU and 100 IU daily) for ovulation induction combined with intrauterine insemination on mono-follicular development. SUBJECT: Prospective study. SETTING: Centre for Assisted Reproduction SANUS, Pardubice. SUBJECT AND METHOD: From March 2005 to November 2007 we performed a total number of 111 ovarian stimulations for patients with unexplained infertility, anovulatory disorder or mild male factor...
April 2008: Ceská Gynekologie
https://www.readbyqxmd.com/read/18342857/comparison-of-daily-and-alternate-day-recombinant-follicle-stimulating-hormone-stimulation-protocols-for-intrauterine-insemination
#16
COMPARATIVE STUDY
Nadia Kabli, Camille Sylvestre, Togas Tulandi, William Buckett
OBJECTIVE: To determine the efficacy of daily versus alternate-day stimulation for patients undergoing intrauterine insemination (IUI). DESIGN: Retrospective comparative study. SETTING: University tertiary care center for infertility. PATIENT(S): Women with anovulatory or unexplained infertility for over 12 months who had not responded to or not conceived with clomiphene citrate treatment. INTERVENTION(S): Ovarian stimulation with recombinant follicle-stimulating hormone (FSH; follitropin-beta) given either daily or on alternate days before IUI...
April 2009: Fertility and Sterility
https://www.readbyqxmd.com/read/18292086/a-carboxyl-terminal-sequence-in-the-lutropin-beta-subunit-contributes-to-the-sorting-of-lutropin-to-the-regulated-pathway
#17
Albina Jablonka-Shariff, Christopher A Pearl, Anna Comstock, Irving Boime
Although synthesized in the same pituitary gonadotropes, the secretion profiles of lutropin (LH) and follitropin (FSH) differ. LH is secreted through a regulated pathway and associated with a bolus release at mid-estrous cycle. In contrast, the majority of FSH is secreted constitutively with an incremental increase until ovulation. Both share an identicalalpha subunit, and thus thebeta subunit contains determinants for sorting into the regulated pathway. Previously, we demonstrated that a hydrophobic carboxyl-terminal heptapeptide of the LHbeta subunit (Leu-Ser-Gly-Leu-Leu-Phe-Leu), not found in the FSHbeta subunit, influences the intracellular behavior of the LH dimer...
April 25, 2008: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/18230195/patient-and-nurse-evaluation-of-recombinant-human-follicle-stimulating-hormone-administration-methods-comparison-of-two-follitropin-injection-pens
#18
RANDOMIZED CONTROLLED TRIAL
R Porter, C Kissel, H Saunders, C Keck
OBJECTIVE: Ovarian stimulation by injection of gonadotrophins is an essential part of assisted reproductive technology (ART) protocols. Two studies (a German pilot study and an Australian study) aimed to assess and compare the ease-of-use, safety and efficacy of two follitropin injection pens. METHODS: Patient satisfaction (questionnaire) and safety were assessed in patients undergoing ART at a German centre for in vitro fertilisation (IVF), randomised either to the follitropin alfa pen or to the follitropin beta pen...
March 2008: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/18068163/spectrotemporal-changes-in-electrical-activity-of-myometrium-due-to-recombinant-follicle-stimulating-hormone-preparations-follitropin-alfa-and-beta
#19
Onder Celik, M Emin Tagluk, Seyma Hascalik, Koray Elter, Nilüfer Celik, Nasuhi Engin Aydin
OBJECTIVE: To investigate the effects of follitropin alfa and beta on the myoelectrical activity of rat myometrium using signal-processing techniques. DESIGN: Prospective, placebo-controlled study. SETTING: Animal and pharmacology laboratory at Inonu University. ANIMAL(S): Forty-five female Wistar albino rats. INTERVENTION(S): Thirty of 45 animals involved in the experiment were registered as the superovulation group...
October 2008: Fertility and Sterility
https://www.readbyqxmd.com/read/18020563/follitropin-alpha-in-infertility-a-review
#20
K L Goa, A J Wagstaff
UNLABELLED: Follitropin alpha (recombinant human follicle-stimulating hormone; follitropin alfa) is a recombinant form of follicle-stimulating hormone (FSH), an endogenous gonadotrophin. Unlike FSH products derived from urine [menotropins (human menopausal gonadotrophins), urofollitropin and highly purified urofollitropin], follitropin alpha is readily available and shows batch-to-batch consistency. As well, it is free of luteinising hormone (LH) activity and contaminant urinary proteins and can be self-administered subcutaneously...
March 1998: BioDrugs: Clinical Immunotherapeutics, Biopharmaceuticals and Gene Therapy
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