PubMed Journals Articles About "Administration Leuprolide Acetate GnRH Agonist Improves Urodynamic Parameters" RSS

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Showing "Administration leuprolide acetate GnRH agonist improves urodynamic parameters" PubMed Articles 1–25 of 13,000+

Administration of leuprolide acetate, a GnRH agonist, improves urodynamic parameters in ovariectomized rats.

To evaluate the effects of a treatment with leuprolide acetate (LA) on bladder overactivity as well as the expression of gonadotropin releasing hormone receptor (GnRH-R), and neurofilaments NF68 and NF200 in female rats with overactive bladder induced by castration.

Chronic administration of gonadotropin releasing-hormone improves learning in old gonadectomized rats.

The aim of this study was to determine whether chronic administration of GnRH improves performance of learning tasks and expression of spinophilin in the hippocampus of gonadectomized old rats. Eighteen-month-old male Wistar rats were used and divided into three groups: control (intact rats); gonadectomized; and gonadectomized + GnRH. The latter group was injected intramuscularly with GnRH (100 nM) twice a day for five weeks. The learning tasks we used were the novel object recognition task (NOR), elevated ...

GnRH agonist long protocol versus GnRH antagonist protocol for various aged patients with diminished ovarian reserve: A retrospective study.

This retrospective analysis compared the efficiency of the gonadotropin- releasing hormone (GnRH) antagonist (GnRH-ant) protocol and the GnRH agonist long (GnRH-a) protocol for patients with diminished ovarian reserve (DOR). A total of 1,233 patients with DOR (anti-Mullerian hormone 35 years). All patients with DOR underwent controlled ovarian stimulation and fresh embryo transfer (ET) on day 3. We recruited 283 GnRH-a and 54 GnRH-ant cycles for PG3, and 663 GnRH-a and 233 GnRH-ant cycles for PG4. In PG3, t...

Management of recurrent implantation failure by gonadotropin-releasing hormone agonist and aromatase inhibitor suppression, in women without evidence of endometriosis.

Endometriosis is common among those with infertility, although many cases go undiagnosed. This study was performed to determine whether empiric treatment with two months of depo-leuprolide 3.75 mg monthly (dep-GnRH-ag) and letrozole 5 mg daily improves pregnancy outcomes in patients with at least two unexplained failed embryo transfers (ETs) but without a previous diagnosis of endometriosis. A retrospective cohort study was performed with subjects who failed at least two good quality ET. The study exclu...

The GnRH analogue dephereline given in a fixed-time AI protocol improves ovulation and embryo survival in dairy cows.

This study compares the fertility effects of inducing ovulation using the GnRH analogue, dephereline, versus natural GnRH at the end of a 5-day progesterone(P4)-based protocol for fixed-time artificial insemination (FTAI) in in heat-stressed and non-heat stressed lactating dairy cows. Cows were given GnRH (GnRH group, n = 369) or dephereline (DEPH group, n = 379) and were inseminated 14-20 h later. Dephereline treatment increased corpus luteum (CL) size on Day 7 post-AI compared with GnRH (P 

Low dose human chorionic gonadotropin administration at the time of gonadotropin releasing-hormone agonist trigger versus 35 h later in women at high risk of developing ovarian hyperstimulation syndrome - a prospective randomized double-blind clinical trial.

Ovarian hyperstimulation syndrome remains a serious complication during in vitro fertilization cycles if high dose human chorionic gonadotropin (hCG) is used to trigger ovulation in high responder patients. Though much of this risk is mitigated with trigger using gonadotropin releasing-hormone (GnRH) agonist alone, it may result in lower birth rates. GnRH-agonist trigger and adjuvant low dose hCG has been proposed to improve birth rates, but timing of this hCG support to corpus luteum function has never bee...

Quantification of controlled release leuprolide and triptorelin in rabbit plasma using electromembrane extraction coupled with HPLC-UV.

An electromembrane extraction followed by HPLC-UV technique was developed and validated for quantification of leuprolide and triptorelin in rabbit plasma. The influencing parameters on the extraction efficiency were optimized using experimental design methodology. The optimized conditions were found to be; supported liquid membrane: a mixture of 1-octanol and 2-ethyl hexanol (1:1) containing 10% (v/v) di(2-ethylhexyl) phosphate, applied voltage: 5 V, extraction time: 5 min, pH of the donor phase: 4.5 and pH...

Risk of ovarian torsion is reduced in GnRH agonist triggered freeze-all cycles: a retrospective cohort study.

Ovarian torsion (OT) in IVF is rare, however, the consequences are significant, which include ovariotomy. In the present study, it was aimed for the first time to compare the incidence of OT between hCG triggered cycles with ICSI and fresh transfer and GnRH-agonist triggered cycles with the ICSI-freeze-all and frozen embryo transfer (FET). In total, 15,577 ICSI cycles performed between 2001 and 2016 were categorised into two groups (Group 1, n: 9978): cycles with controlled ovarian stimulation (COS) and hCG...

Optimizing timed AI protocols for Angus beef heifers: Comparison of induction of synchronized ovulation with estradiol cypionate or GnRH.

This study compared estradiol cypionate (ECP) or GnRH as ovulation inducers at the end of a timed AI (TAI) protocol in Angus heifers. On day 0, heifers (n = 415), between 22 and 24 months of age, were treated with an intravaginal 1 g progesterone (P4) insert and 2 mg of estradiol benzoate. On day 8, heifers had P4 removed, received 500 μg cloprostenol, and were randomized into two groups: ECP [n = 214; 0.5 mg of ECP on day 8] or GnRH [n = 201; 25 μg of GnRH analog licerelin acetate o...

Effects of an intravaginal GnRH analogue administration on rabbit reproductive parameters and welfare.

On commercial farms, rabbit does are subjected to a reproductive rhythm that does not account for their welfare or physiology, leading to reduced longevity and consequently high annual replacement. The European Food Safety Authority (EFSA) recommends limited and infrequent use of hormone treatments, and suggests replacement with alternative methods that do not threaten animal welfare when possible. In the present study, we aimed to determine whether the GnRH analogue lecirelin acetate could be administered ...

The GnRH analogues affect novel neuropeptide SMIM20/phoenixin and GPR173 receptor expressions in the female rat hypothalamic-pituitary-gonadal (HPG) axis.

The recently discovered peptide phoenixin (PNX) and its receptor GPR173 are novel factors that exhibit a large spectrum of regulatory activity, especially when considered as a central modulator of GnRH-related hormonal control of reproductive processes. It has been already proven that GnRH agonists and antagonists can modulate peptidergic signaling in the HPG axis. Despite these findings, there is so far no information regarding the influence of treatment with GnRH analogues on SMIM20/phoenixin signaling in...

How pulsatile kisspeptin stimulation and GnRH autocrine feedback can drive GnRH secretion: A modeling investigation.

Pulsatile secretion of gonadotropin-releasing hormone (GnRH) from hypothalamic GnRH neurons tightly regulates the release of mammalian reproductive hormones. While key factors such as electrical activity and stimulation by kisspeptin have been extensively studied, the underlying mechanisms that regulate GnRH release are still not fully understood. Previously developed mathematical models studied hormonal release and electrical properties of GnRH neurons separately, but never integrated both components. Here...

Subchronic (90-day) repeated dose oral toxicity study of 2-hydroxybenzylamine acetate in rabbit.

2-hydroxybenzylamine (2-HOBA), a naturally occurring compound found in buckwheat, has potential for use as a nutrition supplement due to its ability to protect against the damaging effects of oxidative stress. In a series of rodent toxicity studies, 2-HOBA acetate was well-tolerated and did not produce any toxic effects over 28 or 90 days of repeated oral administration. However, it remained necessary to test the potential toxicity of 2-HOBA acetate in a non-rodent species. In this investigation, 2-HOBA ace...

What research is needed to validate new urodynamic methods? ICI-RS2017.

In recent years urodynamic innovations, although well researched, have failed to follow a standardized development pathway specifically in terms of clinical trials undertaken to demonstrate efficacy. This was discussed at the International Consultation on Incontinence Research Society (ICI-RS) in Bristol, United Kingdom, 2017 with the aim of defining minimum standards for future urodynamic research.

Evaluation of the effect of mating, intrauterine deposition of raw seminal plasma or seminal plasma purified β-NGF on endometrial vascularization in llamas.

The aim of this study was to evaluate the endometrial vascularization area (EVA) of both uterine horns in llamas subjected to different intrauterine treatments resembling physiological conditions after a single mating. Llamas with a growing follicle (≥8 mm) were randomly assigned to: a) single mating with a fertile male (mating; positive control; n = 6); b) intramuscular administration of 50 μg of gonadorelin acetate plus an intrauterine infusion of 4 ml of PBS (GnRH; negative control; n = ...

Rationales for a urodynamic study in patients with cervical spondylotic myelopathy.

Detrusor sphincter dyssynergia (DSD), involuntary detrusor contractions (IDC) and poor bladder compliance (PC) are relatively common urodynamic findings in cervical myelopathy. However, there is little information regarding the role of a urodynamic study (UDS) after decompression surgery for cervical spondylotic myelopathy (CSM).

Combined Effect of NF-κB Inhibitor and β2-Adrenoreceptor Agonist on Mouse Mortality and Blood Concentration of Proinflammatory Cytokines in Sepsis.

Experiments on random-bred albino mice showed that NF-κB inhibitor (BAY 11-7082) and β2-adrenoreceptor agonist (dexmedetomidine hydrochloride) significantly reduced mouse mortality in 4 and 24 h after sepsis modeling (intraperitoneal administration of E. coli) by reducing blood levels of proinflammatory cytokines TNFα, IL-1β, and IL-6. The combined administration of NF-κB inhibitor and β2-adrenoreceptors agonist have an additive effect.

Reversible inhibition of the blood-testis barrier protein improves stem cell homing in mouse testes.

Stem cell homing is a complex phenomenon that involves multiple steps; thus far, attempts to increase homing efficiency have met with limited success. Spermatogonial stem cells (SSCs) migrate to the niche after microinjection into seminiferous tubules, but the homing efficiency is very low. Here we report that reversible disruption of the blood-testis barrier (BTB) between Sertoli cells enhances the homing efficiency of SSCs. We found that SSCs on a C57BL/6 background are triggered to proliferate in vitro w...

Addition of radium-223 to abiraterone acetate and prednisone or prednisolone in patients with castration-resistant prostate cancer and bone metastases (ERA 223): a randomised, double-blind, placebo-controlled, phase 3 trial.

Abiraterone acetate plus prednisone or prednisolone improves progression-free survival and overall survival in patients with metastatic castration-resistant prostate cancer. Radium-223 improves overall survival and delays the onset of symptomatic skeletal events in patients with castration-resistant prostate cancer and bone metastases. We assessed concurrent treatment with abiraterone acetate plus prednisone or prednisolone and radium-223 in such patients.

Modulation Of Caspase-3 Gene Expression And Protective Effects Of Garlic And Spirulina Against CNS Neurotoxicity Induced By Lead Exposure In Male Rats.

Lead (Pb) is a ubiquitous environmental and industrial pollutant with worldwide health problems. The present study was designed to investigate the neurotoxic effects of Pb in albino rats and to evaluate the ameliorative role of garlic as well as Spirulina maxima against such toxic effects. Forty adult male rats were used in this investigation (10 rats/group). Group I: served as control, Group II: rats received lead acetate (100 mg/kg), Group III: rats received both lead acetate (100 mg/kg) and garlic (6...

Neuroendocrinology of reproduction: Is Gonadotropin-Releasing Hormone (GnRH) dispensable?

Gonadotropin releasing hormone (GnRH) is a highly conserved neuroendocrine decapeptide that is essential for the onset of puberty and the maintenance of the reproductive state. First identified in mammals, the GnRH signaling pathway is found in all classes of vertebrates; homologues of GnRH have also been identified in invertebrates. In addition to its role as a hypothalamic releasing hormone, GnRH has multiple functions including modulating neural activity within specific regions of the brain. These variou...

Combined oral contraceptive interference with the ability of ulipristal acetate to delay ovulation: A prospective cohort study.

To determine if a combined oral contraceptive (COC) initiated shortly after ulipristal acetate (UPA) administration interferes with its mechanism of action.

Evaluation of D1/D5 Partial Agonist PF-06412562 in Parkinson's Disease following Oral Administration.

PF-06412562 is a moderately potent, highly selective oral D1/D5 dopamine receptor partial agonist.

Inducing ovulation with hCG in a five-day progesterone-based fixed-time AI protocol improves the fertility of anestrous dairy cows under heat stress conditions.

This study compares the fertility effects of inducing ovulation using human chorionic gonadotropin (hCG) versus gonadotropin releasing hormone (GnRH) at the end of a 5-day progesterone(P4)-based protocol for fixed-time artificial insemination (FTAI) in heat-stressed and non-heat stressed anestrous lactating dairy cows. Heat stress (HS) was defined as an environmental temperature-humidity index (THI) > 72. A P4 intravaginal device (CIDR) was fitted for five days and GnRH administered upon CIDR insertion ...

Mono- and Bi-Phasic Cellulose Acetate Micro-Vectors for Anti-Inflammatory Drug Delivery.

In recent years, different processing technologies have been engineered to fabricate capsules or particles with peculiar properties (e.g., swelling, pH-sensitive response) at the micro and sub-micrometric size scale, to be used as carriers for controlled drug and molecular release. Herein, the development of cellulose acetate (CA) micro-carriers with mono- (MC) or bi-phasic (BC) composition is proposed, fabricated via electrohydrodynamic atomization (EHDA)-an electro-dropping technology able to micro-size p...

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