Publications by authors named "Geoff Hackett"

To provide an evidence based consensus on the diagnosis and management of premature ejaculation (PE). The British Society for Sexual Medicine (BSSM) takes issue with the advice to use off label treatments, such as daily selective serotonin reuptake inhibitors treatment, favoring on-demand dapoxetine. There is increasing evidence for the use of PDE5 inhibitors which are superior to a placebo for the treatment of PE.

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Article Synopsis
  • * The TRAVERSE study, published in June 2023, found no increased risk of major cardiovascular events in men receiving testosterone therapy compared to a placebo, countering earlier studies that suggested potential risks.
  • * Based on the TRAVERSE findings and extensive previous research, the Androgen Society concludes that testosterone therapy is not linked to higher risks of heart attacks, strokes, or cardiovascular deaths.
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Background: Testosterone replacement therapy is known to improve sexual function in men younger than 40 years with pathological hypogonadism. However, the extent to which testosterone alleviates sexual dysfunction in older men and men with obesity is unclear, despite the fact that testosterone is being increasingly prescribed to these patient populations. We aimed to evaluate whether subgroups of men with low testosterone derive any symptomatic benefit from testosterone treatment.

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Design: The androgen receptor (AR) mediates peripheral effects of testosterone. Previous data suggests an association between the number of CAG repeats in exon-1 of the AR gene and AR transcriptional activity. The aim of this analysis was to determine the association between the number of AR CAG repeats and all-cause mortality in men and the influence of testosterone level on the association.

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Background: Inter-assay variation between different immunoassays and different mass spectrometry methods hampers the biochemical confirmation of male hypogonadism. Furthermore, some laboratories utilise assay manufacturer reference ranges that do not necessarily mirror assay performance characteristics, with the lower limit of normality ranging from 4.9 nmol/L to 11 nmol/L.

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Inter-assay variation between different immunoassays and different mass spectrometry methods hampers the biochemical confirmation of male hypogonadism. Furthermore, some laboratories utilis eassay manufacturer reference ranges that do not necessarily mirror assay performance characteristics, with the lower limit of normality ranging from 4.9 nmol/L to 11 nmol/L.

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Background: Testosterone is the standard treatment for male hypogonadism, but there is uncertainty about its cardiovascular safety due to inconsistent findings. We aimed to provide the most extensive individual participant dataset (IPD) of testosterone trials available, to analyse subtypes of all cardiovascular events observed during treatment, and to investigate the effect of incorporating data from trials that did not provide IPD.

Methods: We did a systematic review and meta-analysis of randomised controlled trials including IPD.

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Introduction: The androgen receptor (AR) mediates peripheral effects of testosterone. Evidence suggests that the number of CAG repeats in exon-1 of the AR gene negatively correlates with AR transcriptional activity. The aim of this analysis was to determine the association between CAG repeat number and mortality in men.

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Introduction: Hypogonadism is associated with poorer glycaemic outcomes/increased all-cause and cardiovascular morbidity/mortality in type 2 diabetes mellitus (T2DM). Increasing CAG repeat number within exon-1 of the androgen receptor (AR) gene is associated with increased AR resistance/insulin resistance.

Methods: We determined in a long-term 14-year follow-up cohort of 423 T2DM Caucasian men, the association between baseline androgen status/CAG repeat number (by PCR then Sequenom sequencing) and metabolic/cardiovascular outcomes.

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Introduction: We have previously reported rates of diagnosis of male hypogonadism in United Kingdom (UK) general practices. We aimed to identify factors associated with testosterone prescribing in UK general practice.

Methods: We determined for 6741 general practices in England, the level of testosterone prescribing in men and the relation between volume of testosterone prescribing and (1) demographic characteristics of the practice, (2) % patients with specific comorbidities and (3) national GP patient survey results.

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Introduction: A number of guidance documents have been published in recent years for the diagnosis and management of hypogonadism (HG). Laboratory practice has a major role in supporting guidelines with accurate and precise serum total testosterone (TT) methods and standardised pre- and post-analytical protocols. Our study investigated whether laboratory practice currently supports the management guidelines for HG.

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Introduction: Erectile dysfunction (ED) is common in older age and in diabetes mellitus (DM). Phosphodiesterase type 5-inhibitors (PDE5-is) are the first-line for ED. We investigated how the type of diabetes and age of males affect the PDE5-i use in the primary care setting.

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Introduction: Hypogonadism is more prevalent in men with type 2 diabetes (T2DM) (25%-40%) than in men without T2DM. Hypogonadism has been associated with poorer glycaemic outcomes and increased cardiovascular morbidity/mortality. We report a 14-year follow-up study to evaluate the influence of baseline testosterone level on T2DM outcomes.

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In this commentary, we highlight important findings from a notable RCT by Ng Tang Fui et al. 2016 which investigated the effects of testosterone treatment in dieting obese men. First, a myopic focus on weight loss can detract from important improvements in body composition.

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Erectile dysfunction (ED), which worldwide is likely to affect in excess of 300 million men by 2025, is often either untreated or insufficiently treated. It can be a prelude to other serious illnesses and may be a cause or consequence of depression in affected individuals. Among men younger than 60 years of age, ED can be a robust early-stage indicator of vascular disease and type 2 diabetes.

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Background: Erectile dysfunction (ED) is a common condition that may affect men of all ages; in 1999, a Process of Care Model was developed to provide clinicians with recommendations regarding the evaluation and management of ED.

Aim: To reflect the evolution of the study of ED since 1999, this update to the process of care model presents health care providers with a tool kit to facilitate patient interactions, comprehensive evaluation, and counseling for ED.

Methods: A cross-disciplinary panel of international experts met to propose updates to the 1999 process of care model from a global perspective.

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Introduction: Erectile dysfunction (ED) is a common condition the treatment of which over the years has expanded from specialty care settings to various other clinical settings. A Process of Care Model was developed in 1999 to provide primary care physicians with guidance in the diagnosis and management of ED.

Aim: This update to the Process of Care Model aims to reflect current ED management practices, because the study of ED has changed since 1999.

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Background: This is an update of the 2008 British Society for Sexual Medicine (BSSM) guidelines.

Aim: To provide up-to-date guidance for U.K.

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Background: Testosterone, the most important androgen produced by the testes, plays an integral role in male health. Testosterone levels are increasingly being checked in primary healthcare as awareness of the risks of male hypogonadism grows.

Aim: To investigate what tests are performed to screen for hypogonadism and to exclude secondary hypogonadism.

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Background: Testosterone deficiency (TD) is an increasingly common problem with significant health implications, but its diagnosis and management can be challenging.

Aim: To review the available literature on TD and provide evidence-based statements for UK clinical practice.

Methods: Evidence was derived from Medline, EMBASE, and Cochrane searches on hypogonadism, testosterone (T) therapy, and cardiovascular safety from May 2005 to May 2015.

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Article Synopsis
  • - The study examined the long-term effects of testosterone replacement therapy (TRT) on quality of life (QOL) and sexual function in men with low testosterone levels, using data from a multinational registry over 36 months.
  • - Results showed that men receiving TRT experienced significant improvements in QOL and sexual function, reporting fewer symptoms compared to those who did not receive treatment; TRT patients scored better on established assessment scales like the AMS and IIEF.
  • - The findings suggest that TRT can lead to sustained enhancements in the life quality of men with hypogonadism, although some improvement was also noted in untreated patients, emphasizing the effectiveness of TRT over time.
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Objective: Experimental evidence has shown potential cardioprotective actions of phosphodiesterase type-5 inhibitors (PDE5is). We investigated whether PDE5i use in patients with type 2 diabetes, with high-attendant cardiovascular risk, was associated with altered mortality in a retrospective cohort study.

Research Design And Methods: Between January 2007 and May 2015, 5956 men aged 40-89 years diagnosed with type 2 diabetes before 2007 were identified from anonymised electronic health records of 42 general practices in Cheshire, UK, and were followed for 7.

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Erectile dysfunction (ED) has been well recognized as a marker of increased cardiovascular risk for more than 15 years, especially in younger men. Early detection of ED represents an opportunity to intervene to decrease the risk of future cardiovascular events and limit the progression of ED severity. Evidence suggests there is a window of opportunity of 3 to 5 years from the onset of ED to subsequent cardiovascular events.

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Introduction: The diagnosis, treatment, and survivorship of cancer have a profound effect on the quality of life and psychological well-being of men and women. Indeed, the perturbation of sexual function because of neoplasm has far-reaching implications.

Aims: To explore the prevalence, pathophysiology, and treatment of sexual issues in persons with cancer and offer evidence-based recommendations regarding optimal prevention and treatment strategies.

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Synopsis of recent research by authors named "Geoff Hackett"

  • Geoff Hackett's recent research primarily focuses on testosterone therapy, investigating its implications on cardiovascular health and the benefits for various patient subgroups, particularly men with low testosterone levels and specific comorbidities.
  • A key finding from Hackett's work indicates that testosterone treatment may not increase cardiovascular event risks, challenging previous concerns raised by earlier studies and reaffirmed in the Androgen Society's position paper.
  • Additionally, his studies emphasize the need for standardized biochemical confirmation of male hypogonadism due to significant variability in laboratory practices, which could affect diagnosis and management outcomes.