PubMed Health⌕ Search

Biomedical subjects

J Loane

Publications and source records attributed to J Loane.

5 recordsLinked to original sources
PubMed2006

The efficacy of corticosteroid therapy in inflammatory bowel disease: analysis of a 5-year UK inception cohort.

BACKGROUND: Corticosteroids remain the mainstay of first-line therapy in active inflammatory bowel disease. AIMS: To determine the clinical outcome after the first corticosteroid-therapy and to identify factors which predict response/failure. METHODS: 216 (136 ulcerative colitis and 80 Crohn's disease) patients were identified in this 5-year inception cohort. The outcomes of early (30 days) and late (1 year) responses were used. Multivariate analyses were performed to identify factors associated with outcome. RESULTS: 86 (63%) and 60 (75%) ulcerative colitis and Crohn's disease required corticosteroid therapy, respectively. In ulcerative colitis, at 30 days, 69 (51%), 42 (31%) and 25 (18%) patients demonstrated complete response, partial response and no response, respectively. For Crohn's disease, these outcomes were observed in 32 (40%), 28 (35%) and 20 (25%). After 1 year, 75 (55%), 23 (17%) and 29 (21%) patients with ulcerative colitis demonstrated prolonged response, corticosteroid-dependence or required surgery, respectively. For Crohn's disease, these outcomes were observed in 30 (38%), 19 (24%) and 27 (35%) patients. Extensive ulcerative colitis was a predictor of surgery (P = 0.001, OR: 15.2). In Crohn's disease, inflammatory disease behaviour was negatively associated with surgery (P = 0.02, OR: 0.13). CONCLUSION: Although corticosteroids are effective, dependence/resistance remains common. Patients with extensive ulcerative colitis and fistulizing/stricturing Crohn's are most at risk of failing corticosteroid therapy.

Adrenal Cortex Hormones↗
PubMed2001

Tissue viral load variability in chronic hepatitis C.

OBJECTIVE: Liver biopsy is regarded as the gold standard for assessing disease activity in chronic hepatitis C, but sampling error is a potential limitation. Whether sampling variability applies equally to viral load assessment as it does to histology is uncertain. To examine this, we compared viral load between right- and left-lobe biopsy specimens from patients infected with hepatitis C virus (HCV). METHODS: Bilobe biopsies were taken from 16 patients who were serum positive for HCV RNA by reverse transcription-polymerase chain reaction. Genotype was identified by reverse line probe hybridization. There was an absence of competing risk factors for infectious and other liver diseases in this patient group. Histology and hepatic viral load were assessed blindly. None of the patients had received antiviral therapy at the time of study. RESULTS: Detection of HCV in right and left lobes was concordant with serum positivity in all cases. The viral load between lobes was highly correlated (p = 0.0003, r = 0.79). In contrast, the histological activity indices of inflammation and fibrosis/cirrhosis were poorly correlated between lobes (p = 0.038, r = 0.60, and p = 0.098, r = 0.50, respectively). CONCLUSION: Hepatic viral load variability does not suffer from the same degree of heterogeneity of sampling variability as does histology.

Adult↗
PubMed1997

One week triple therapy for Helicobacter pylori: does high-dose clarithromycin confer additional benefit?

BACKGROUND: Clarithromycin, a new acid stable macrolide antibiotic with proven efficacy against Helicobacter pylori, has been widely incorporated into eradication regimens but its optimal dosage schedule remains controversial. The standard dose of clarithromycin is 250 mg twice daily. METHODS: In a prospective study designed to evaluate the helicobactericidal efficacy, patient acceptability, and ulcer healing efficacy of a triple therapy regimen incorporating high dose clarithromycin, 100 consecutive patients with H. pylori-positive peptic ulcer received omeprazole 20 mg twice daily in combination with metronidazole 400 mg twice daily and clarithromycin 500 mg twice daily for seven days. H. pylori status was assessed before and at least 4 weeks after therapy by rapid urease test and histology. Adverse events and compliance were assessed by direct questioning. RESULTS: Only two patients failed to attend for repeat endoscopy, leaving 98 evaluable patients. Of these, 94 were H. pylori-negative after therapy, giving an intention-to-treat eradication rate of 94% (95% confidence interval, 89%-99%). The ulcer healing rate was 92% (86%-98%), and ulcer healing was significantly associated with H. pylori eradication (p < 0.01). Adverse events were reported by 33% of patients of which nausea was the commonest (14%). Noncompliance with therapy was significantly associated with H. pylori treatment failure (p < 0.001). CONCLUSIONS: Seven day triple therapy incorporating high dose clarithromycin effectively eradicates H. pylori and heals ulcers, but it is disadvantaged by a relatively high rate of adverse events. In view of these findings and the fact that no direct comparison to date has shown increased efficacy from high dose clarithromycin, we would recommend continued use of low dose clarithromycin when combined with omeprazole and a nitroimidazole.

Adult↗