Andrew Yip

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Melatonin inhibited the proliferation of hormone-independent LNCaP prostate cancer cells partly via MT1 receptor activation both in vitro and in nude mice xenograft model. In this study, the melatonin receptor expression in the prostate cancer tissue of a patient with bone metastases and the effect of melatonin on the biochemical progression of(More)
Erectile dysfunction (ED), smoking, and alcohol drinking are common in middle-aged men. Although smoking has been shown to be a risk factor of ED in Chinese and other populations, the relationship between drinking alcohol and ED is not clear. The Family Planning Association of Hong Kong conducted the Men Health Survey in 2004. In all, 1506 men aged 20-70(More)
BACKGROUND It has been suggested that addition of obesity score to the APACHE-II system can lead to more accurate prediction of severity of acute pancreatitis. However there is scanty information on the usefulness of the combined APACHE-O scoring system in Asian patients. This study aimed to compare the accuracy of Ranson, APACHE-II and APACHE-O systems in(More)
To describe the prevalence of erectile dysfunction (ED) and its association with smoking among the Chinese in Hong Kong, we conducted a cross-sectional study among 819 men (aged 31-60 years) who were randomly selected among the Hong Kong residents and interviewed by trained interviewers. A structured questionnaire was used for data collection. We found that(More)
AIM To examine the influence of diabetes mellitus (DM) on the outcome of infrainguinal bypass operations performed for critical foot ischaemia in Chinese patients. METHODS A prospective audit of 265 consecutive infrainguinal bypass operations. RESULTS Diabetic patients suffered more frequently from ischaemic heart disease (48% vs 25%, P=0.001) and(More)
OBJECTIVE To estimate the prevalence of, and risk factors associated with, sexual dysfunction among Hong Kong Chinese married men aged 30-60 years. MATERIALS AND METHODS The present study was a part of the Ninth Knowledge, Attitude, and Practice survey conducted in 2007 by the Family Planning Association of Hong Kong. The data set consisted of 728(More)
BACKGROUND Whether the association between smoking and erectile dysfunction is causal is uncertain. No RCTs have been previously conducted on cessation counseling and additional nicotine replacement therapy (NRT) adherence counseling among smokers with erectile dysfunction. PURPOSE The aim of the study was to determine if smoking-cessation counseling in(More)
We evaluated the efficacy and safety of as-needed tadalafil in a diverse clinical population (with varying patient demographics, disease severity, and comorbid medical conditions) of Asian men with erectile dysfunction (ED). An integrated analysis of five double-blind, placebo-controlled trials (N = 1 046) was performed. Patients were randomly assigned to(More)
The aim of this study was to evaluate a rehabilitative programme including biofeedback training for the treatment of chronic constipation. A prospective series of patients with constipation, as defined by the Rome II diagnostic criteria, were assessed by a clinician, a dietitian and a physiotherapist. Anorectal physiology investigations and defecography(More)