background: our objective was to evaluate the effectiveness of clomiphene citrate (cc) vs. letrozole (l) plus human menopausal gonadotropin (hmg) in gonadotropin releasing hormone (gnrh) antagonist protocol in poor prognosis women with previous failed ovarian stimulation undergoing intracytoplasmic sperm injection (icsi). materials and methods: this retrospective cohort study included cycles wi...

background: premature luteinization during in vitro fertilization was commonly happened before the introduction of gnrh analogues. high level of unwanted progesterone is associated with adverse pregnancy outcome and is thought to be induced by inappropriate lh elevation.objective: to evaluate the progesterone level on the day of human chorionic gonadotropin (hcg) triggering in gnrh agonist and ...

Superparamagnetic iron oxide nanoparticles have been coated with a low affinity CXCR4 receptor antagonist to give high multivalent binding construct.

objective: to compare the pregnancy outcomes achieved by in vitro fertilization (ivf) between minimal stimulation and conventional antagonist protocols in poor ovarian responders (pors). materials and methods: in this randomized controlled trial, 77 pors undergoing ivf were selected and divided into two groups. first group was the minimal stimulation group (n = 42) receiving 100 mg/day clomiphe...

background: to assess the usefulness of premature luteinization hormone (lh) surge prevention in an intrauterine insemination (iui) cycle by gnrh antagonist administration materials and methods: sixty patients with unexplained or mild male infertility or minimal to mild endometriosis were enrolled in this prospective randomized controlled trial. there were twenty patients in group a (with gnrh ...

introduction: spreading depression (sd) is a propagating wave of depolarization followed by depression of the neuroglial activities and can modulate extracellular dopamine concentrations in the neocortex. it has been shown that the dopaminergic system plays a role in migraine. sd has been suggested as a critical phenomenon in the pathophysiology of migraine. the aim of this study was to investi...

Objective(s):Estrogen (E2) has neuroprotective effects on blood-brain-barrier (BBB) after traumatic brain injury (TBI). In order to investigate the roles of estrogen receptors (ERs) in these effects, ER-α antagonist (MPP) and, ER-β antagonist (PHTPP), or non-selective estrogen receptors antagonist (ICI 182780) were administered. Materials and Methods: Ovariectomized rats were divided into 10 gr...

Background To compare a flexible, multi-dose GnRH antagonist protocol with a long GnRH .agonist protocol in poor respo MaterialsAndMethods A randomized clinical trial of 70 poor responder patients (35 patients in GnRH antagonist protocol and 35 patients in long GnRH agonist protocol) was performed at Royan Institute, Tehran, Iran. Both groups were given a fixed dose of human menopausal gonadotr...

Giriş/Amaç:IVF-ET uygulanan 1000 siklusun GnRH antagonist ve agonist protokollerinin etkinliğinin karşılaştırılması amaçlanmıştır. Gereç Yöntemler:1000 siklus çalışmaya dahil edilmiştir,bu siklusların 283?üne protokol,717?sine protokol uygulanmıştır. Her iki grubu demografik özellikleri, tedavi karakteristikleri, gebelik oranları açısından karşılaştırılmıştır. Bulgular:Agonist grubunda ?coastin...

results: the most important diseases to consider in the differential diagnosis of fphl include chronic telogen effluvium (cte), permanent alopecia after chemotherapy (pac), alopecia areata incognito (aai) and frontal fibrosing alopecia (ffa). this review describes criteria for distinguishing these conditions from fphl. conclusions: the only approved treatment for fphl, which is 2% topical minox...