Publications by authors named "John Tuckey"

Objective: To provide a clinical framework and key guideline statements to assist clinicians in the evidence-based management of Peyronie's disease (PD).

Methods: We conducted a review of the published literature relevant to PD management, with an emphasis on published clinical guidelines. References used in the text have been assessed according to their level of evidence, and guideline recommendations have been graded based on the Oxford Centre for Evidence-based Medicine Levels of Evidence.

View Article and Find Full Text PDF

Purpose: This study was conducted to investigate the effect of Se supplementation on prostate cancer incidence in men at high risk for prostate cancer.

Methods: A Phase 3 randomized, double-blind, placebo-controlled clinical trial was conducted in 699 men at high risk for prostate cancer (prostate specific antigen (PSA) >4 ng/ml and/or suspicious digital rectal examination and/or PSA velocity >0.75 ng/ml/year), but with a negative prostate biopsy.

View Article and Find Full Text PDF

The study provides data relating serum selenium concentration to activities of 2 key selenoenzymes, hemolysate thioredoxin reductase (TR) and glutathione peroxidase (GPx), measured by spectrophotometry, in a group of men at high risk for prostate cancer. This trial enrolled 43 patients with elevated prostate-specific antigen but negative biopsy for prostate cancer. Such individuals have a high risk of developing prostate cancer in the succeeding 5 y.

View Article and Find Full Text PDF

The essential micronutrient, selenium, is at low levels in the New Zealand diet. Selenium is a component of a number of proteins involved in the maintenance of genomic stability, and recommended daily allowances (RDA) are set on saturation levels for glutathione peroxidase (GPx), a key enzyme in surveillance against oxidative stress. It has been assumed but not proven that this level will be adequate for other key selenoenzymes.

View Article and Find Full Text PDF