Jonathan Ramsay
A5019610543- Sperm and Testicular Function
- Reproductive Biology and Fertility
- Reproductive Health and Technologies
- Sexual Differentiation and Disorders
- Hormonal and reproductive studies
- Ureteral procedures and complications
- Assisted Reproductive Technology and Twin Pregnancy
- Urinary Bladder and Prostate Research
- Male Reproductive Health Studies
- Urological Disorders and Treatments
- Ovarian function and disorders
- Prenatal Screening and Diagnostics
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Testicular diseases and treatments
- Kidney Stones and Urolithiasis Treatments
- Metabolism and Genetic Disorders
- Reproductive System and Pregnancy
- Pediatric Urology and Nephrology Studies
- Urologic and reproductive health conditions
- Prostate Cancer Diagnosis and Treatment
- Medical History and Innovations
- Therapeutic Uses of Natural Elements
- Renal Diseases and Glomerulopathies
- Abdominal vascular conditions and treatments
- Bladder and Urothelial Cancer Treatments
London Clinic
2025
Hammersmith Hospital
2008-2024
Imperial College Healthcare NHS Trust
2015-2024
Charing Cross Hospital
1993-2021
Imperial College London
2016
Chelsea and Westminster Hospital
2004-2008
University of Calgary
2007
St Bartholomew's Hospital
1985-1994
Royal Marsden Hospital
1990
Urology Team
1989
Oxidative stress (OS) is a significant cause of DNA fragmentation and associated with poor embryo development recurrent miscarriage. The aim this study was to compare two different methods for assessing seminal OS their ability predict sperm abnormal semen parameters. Semen samples were collected from 520 men attending routine diagnostic testing following informed consent. assessed using either chemiluminescence assay measure reactive oxygen species (ROS) or an electrochemical oxidation...
Varicocele is a common problem among infertile men. repair (VR) frequently performed to improve semen parameters and the chances of pregnancy. However, there lack consensus about diagnosis, indications for VR its outcomes. The aim this study was explore global practice patterns on management varicocele in context male infertility.Sixty practicing urologists/andrologists from 23 countries contributed 382 multiple-choice-questions pertaining management. These were condensed into an online...
This is the first study to assess outcome of sperm washing and intrauterine insemination (IUI) cycles in human immunodeficiency virus-positive (HIV(+)) men determine any predictors success, as well evaluating effect HIV on parameters.Semen characteristics were evaluated 106 HIV(+) a control group 234 HIV(-) men, markers disease assessed. Age, stimulation regime, parameters, use anti-retrovirals assessed washing/IUI men.Ejaculate volume, concentration, total count, progressive motility normal...
Purpose: The use of antioxidants is common practice in the management infertile patients.However, there are no established guidelines by professional societies on antioxidant for male infertility.Materials and Methods: Materials Using an online survey, this study aimed to evaluate pattern reproductive specialists determine clinical utility oxidative stress (OS) testing prescriptions treat infertility.Results: Results: Responses from 1,327 participants representing 6 continents, showed...
The purpose of this meta-analysis is to study the impact varicocele repair in largest cohort infertile males with clinical by including all available studies, no language restrictions, comparing intra-person conventional semen parameters before and after varicoceles.
Do the Comet parameters of proportions sperm with low or high DNA damage improve power test in diagnosis male infertility and/or prediction IVF and ICSI live birth rates?The mean score scores for were useful diagnosing provided additional discriminatory information both births.Sperm impacts adversely on fertility outcomes.A retrospective study was performed involving a total 457 participants (381 patients 76 fertile donors). Data collected from clinic between 2015 2017.A 381 consecutive...
BACKGROUNDWe present the first powered prospective study to assess whether sperm aneuploidy can predict outcome of ICSI.
The Prostatron device, which provides simultaneous microwave heating of the prostate and conductive cooling urethra, was used in 50 men with significant urethral obstruction by benign prostatic hyperplasia (BPH). heated to 45.5°C for 55 minutes most cases. No anesthesia or sedation required. Of 19 patients acute retention before treatment, one died disseminated renal cancer soon after treatment three are awaiting a voiding trial. Eight voided normally catheter withdrawal, six whom continue...
Non-obstructive azoospermia (NOA) is a common, but complex problem, with multiple therapeutic options and lack of clear guidelines. Hence, there considerable controversy marked variation in the management NOA. This survey evaluates contemporary global practices related to medical surgical for patients A 56-question online covering various aspects evaluation NOA was sent specialists around globe. paper analyzes results second half dealing Results have been compared current guidelines, expert...
Couple's infertility is a rising issue worldwide affecting approximately 15% of couples. In 50% the couples, male factor can be identified. Moreover, 30% men exhibit reduced sperm quality without any identifiable reason, thereby delineating condition idiopathic (IMI). Despite numerous improvements in diagnosis and treatment over last decades, forms are still most challenging clinical dilemmas. The aim this article to describe comprehensive diagnostic work-up that each infertile man should...
OBJECTIVE To present the first UK data on sperm DNA fragmentation levels in subfertile men and fertile controls, correlation with semen variables, to assess effect outcome of intracytoplasmic injection (ICSI). PATIENTS, SUBJECTS AND METHODS In all, 56 undergoing ICSI (28 positive 28 a negative for paternity) 10 control donors were recruited. The index (DFI) was assessed raw pre‐preparation samples using chromatin structure assay. A mean 5212 analysed per sample DFI are presented by fertility...
Objective To assess whether the effect of chewing khat leaves ( Catha edulis ) on urodynamics healthy males is altered by selective α 1 ‐adrenergic blocking agent indoramin in a prospective randomized double‐blind controlled trial. Subjects and methods The 11 were studied before during session preceded or placebo. Results Khat produced fall average maximum urine flow rate. This was inhibited indoramin. Conclusions urinary side‐effects are probably mediated through stimulation adrenergic...