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Biomedical subjects

Angeliki Theodoropoulou

Publications and source records attributed to Angeliki Theodoropoulou.

6 recordsLinked to original sources

A prospective, randomized comparison of adrenaline injection in combination with detachable snare versus adrenaline injection alone in the prevention of postpolypectomy bleeding in large colonic polyps.

OBJECTIVES: Our study sought to compare the efficacy of adrenaline injection in combination with detachable snare versus adrenaline injection alone in the prevention of postpolypectomy bleeding in large colonic polyps. METHODS: At the time of colonoscopy, patients with at least one colonic polyp > or =2 cm were randomized to receive treatment either by the injection of a 1:10.000 solution of adrenaline and the position of a detachable snare followed by a conventional snare polypectomy (group A) or injection of adrenaline followed by a conventional snare polypectomy (group B). A total of 159 consecutive patients were randomly assigned to one of the above groups. Out of them, 84 patients (47 men, 37 women, mean age 61 yr) were assigned to group A and 75 (37 men, 38 women, mean age 64 yr) to group B. Early (<24 h) and late (>24 h-30 days) bleeding complications were assessed. RESULTS: Overall bleeding complications occurred in 10/159 (6.2%) of the patients. There were two cases of bleeding in group A (2.3%), and eight in group B (10.6%) (P= 0.04). The number of early bleeding episodes was significantly reduced in group A patients (1 case) compared to that of group B (7 cases) (P= 0.02). In contrast, there was no significant difference between group A and B as far as late bleeding is concerned. CONCLUSIONS: Our data suggest that the use of adrenaline injection in combination with detachable snare may significantly decrease the number of early postpolypectomy bleeding episodes in patients with large colonic polyps.

Aged↗

Association between enhanced soluble CD40 ligand and prothrombotic state in inflammatory bowel disease.

BACKGROUND: Inflammatory bowel disease is associated with an increased incidence of thromboembolic complications. The aim of this study was to investigate the role of the soluble CD40 ligand (sCD40L), which displays prothrombotic properties, in patients with ulcerative colitis (UC) and Crohn's disease (CD) in comparison with inflammatory and healthy controls. METHODS: Plasma levels of sCD40L, prothrombin fragment 1+2 (F1+2), thrombin-antithrombin (TAT) complex and soluble P-selectin were measured in 104 inflammatory bowel disease patients (54 ulcerative colitis and 50 Crohn's disease), in 18 cases with other causes of intestinal inflammation and in 80 healthy controls using commercially available enzyme-linked immunosorbent assays. Plasma levels of sCD40L were correlated with disease activity, type, localization and treatment as well as with the measured thrombophilic parameters. RESULTS: CD patients had significantly higher sCD40L levels than both groups of controls (CD vs HC P < 0.001; CD vs non-IBD P < 0.05). UC patients had higher but not significantly different sCD40L levels compared with the controls. Both UC and CD patients with active disease had significantly higher sCD40L levels in comparison with patients with inactive disease. Plasma levels of sCD40L were correlated with platelet count (r = 0.27, P = 0.001). They also showed a correlation with prothrombin F1+2 (r = 0.16, r = 0.03) and TAT (r = 0.15, r = 0.04) as well as with P-selectin (r = 0.19, P = 0.01). CONCLUSIONS: The increased sCD40L plasma levels may represent, at least in some degree, a molecular link between inflammatory bowel disease and the procoagualant state.

Adult↗

Low plasma protein Z levels in patients with ischemic colitis.

Hypercoagulable states have been suggested to play an important role in the pathogenesis of ischemic colitis. Since protein Z is, as recently demonstrated, important in the regulation of coagulation, we investigated the plasma levels of protein Z in connection to factor V Leiden (FVL) and anti-phospholipid antibodies in patients with a definite diagnosis of ischemic colitis. The plasma levels of protein Z were measured using a commercially available enzyme-linked immunosorbent assay in 33 patients with ischemic colitis, 13 patients with diverticulitis, and 33 healthy controls. Mean plasma protein Z levels were 1.38 +/- 0.52 microg/ml in patients with ischemic colitis and were significantly lower compared to healthy controls (1.86 +/- 0.49 microg/ml) and patients with diverticulitis (1.72 +/- 0.53 microg/ml) (P = 0.001). Protein Z deficiency was found in patients cases with ischemic colitis (18.2%) compared to one with diverticulitis (7.7%) and one healthy control (3.0%). In conclusion, our results suggest that low plasma protein Z levels may play a role in the disease development in some cases with ischemic colitis.

Antibodies, Antiphospholipid↗