K D Williamson

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OBJECTIVE To determine the incidence of Fas positivity and DNA double-strand breaks (DSB) as indicators of early- and late-stage apoptosis in ejaculated sperm. DESIGN Fas positivity was assessed by flow cytometry and DSB by the neutral Comet assay. SETTING Andrology Laboratory, Royal Maternity Hospital, Belfast, Northern Ireland, United Kingdom. (More)
UNLABELLED The biochemical response to ursodeoxycholic acid (UDCA)--so-called "treatment response"--strongly predicts long-term outcome in primary biliary cholangitis (PBC). Several long-term prognostic models based solely on the treatment response have been developed that are widely used to risk stratify PBC patients and guide their management. However,(More)
BACKGROUND Data regarding the utility of the Glasgow-Blatchford bleeding score (GBS) in hospitalized patients with upper GI hemorrhage are limited. OBJECTIVE To evaluate the performance of the GBS in predicting clinical outcomes and the need for interventions in patients with upper GI hemorrhage. DESIGN Prospective observational study. SETTING Single,(More)
Archival, paraffin-embedded, pathology specimens representing pretreatment tissue biopsies from 73 patients with epidermoid carcinoma of the head and neck were analyzed for DNA Index and %S-phase cells by flow cytometry and were scored for quantitative histomorphology. The DNA fluorescence/light scatter size patterns derived from paraffin-embedded specimens(More)
Flow cytometrically (FCM) derived DNA and RNA profiles were studied in acridine orange (AO)-stained body cavity fluid (BCF) specimens obtained from 78 patients with various solid tissue and hematologic malignancies. The ploidy (DNA index), RNA content (RNA index), proliferative activity (% S + G2M) and DNA and RNA scattergram patterns were tested(More)
Primary sclerosing cholangitis (PSC) is a chronic cholestatic liver disease, which in the majority of patients progresses to liver transplantation or death. To date, no medical treatment has been proven to be of benefit, although ursodeoxycholic acid is widely used. The etiopathogenesis of PSC is unclear, although it is associated with inflammatory bowel(More)
INTRODUCTION Primary sclerosing cholangitis (PSC) is a progressive cholestatic disorder that ultimately can lead to cirrhosis, liver failure, malignancy and death. It is strongly associated with inflammatory bowel disease (IBD), and though a rare disease, its incidence is increasing. There are no proven medical therapies for PSC. SOURCES OF DATA Ovid(More)
BACKGROUND Colonoscopy is an invasive procedure and a limited resource. It is therefore desirable to restrict its use to those in whom it yields an important diagnosis, without missing pathology in others. AIM The aim of this study was to determine whether standard clinical criteria can be used to reliably distinguish when colonoscopy is advisable in(More)
OBJECTIVE Most prognostic models for primary sclerosing cholangitis (PSC) are based on patients referred to tertiary care and may not be applicable for the majority of patients with PSC. The aim of this study was to construct and externally validate a novel, broadly applicable prognostic model for transplant-free survival in PSC, based on a large,(More)