Search results for "Venous leg ulcer"
showing 5 items of 5 documents
Calf muscle pump impairment and delayed healing of venous leg ulcers: Air plethysmographic findings
2007
There is a need for a diagnostic tool to predict clinical outcome of venous leg ulcer patients, as the prognosis of healing based on clinical data alone has not appeared to be satisfactory. Air plethysmographic assessment of calf muscle pump was performed in the supine and upright position in 129 patients with active ulcers on their legs. All patients were managed in a specialized leg ulcer clinic. Results of air plethysmography were compared to clinical data and time of healing of ulcers. Muscle pump failure was found in 42.6% of extremities (supine position, 33.3%; upright, 22.5%; both, 12.4%). Patients with insufficient pump were older, and their ulcers were larger. Failure of pump was f…
The treatment of venous leg ulcers: a new therapeutic use of iloprost
2007
Background: We conducted a study using an intravenous (i.v.) infusion of iloprost in the treatment of venous ulcers to verify whether the association of i.v. iloprost + local therapy + elastic compression has a favorable effect when compared with traditional treatment with local therapy and elastic compression. Study Design: We evaluated the effects of iloprost in 98 consecutive patients with noncomplicated venous ulcers of lower limbs subdivided into 2 groups: the first group (48 patients) received iloprost in saline solution for 3 weeks and the second group (50 patients) received a venous infusion of a saline solution. The patients were examined at baseline time 0 (first visit) and then a…
Hypothetical molecular mechanisms by which local iron overload facilitates the development of venous leg ulcers and multiple sclerosis lesions.
2008
Summary This paper presents a hypothetical model of role for iron in the development of venous leg ulcers and multiple sclerosis. Elevated concentrations of iron were found in the skin affected by venous hypertension and also in the areas of brain with multiple sclerosis lesions. Individuals with hemochromatosis gene (HFE) mutations: C282Y and H63D, which result in a less efficient transport of iron by macrophages, are characterized by an increased risk for venous leg ulcer and multiple sclerosis. Multiple sclerosis is a T cell-mediated disease, and T cells probably participate in the development of venous ulcers. This deleterious role of ferric ions could be related to the regulation of T …
A potential role of interferon-gamma in the pathogenesis of venous leg ulcers.
2005
Venous leg ulcer is the most severe expression of chronic venous insufficiency. Venous ulcerations are always associated with venous ambulatory hypertension, but the exact mechanism leading from pathological hemodynamics in venous circulation to the necrotic lesions in the skin still remains undiscovered. It has been shown that tissue injury in venous ulcer patients was induced by leukocytes. However, though infiltrating leukocytes have at their disposal a powerfully cytotoxic arsenal, it has not been discovered which molecular mechanisms may contribute to the skin damage. The search for this hypothetical factor responsible for the development of ulceration should be focused on mechanisms l…
Behaviour of the plasma concentration of gelatinases and their tissue inhibitors in subjects with venous leg ulcers.
2015
Venous leg ulcers are common in subjects with chronic venous insufficiency. The increased intraluminal pressure causes alteration of the skin microcirculation, leukocyte activation and release of proteolytic enzymes leading to ulceration. An impaired expression and activity of matrix metalloproteases (MMPs) and their tissue inhibitors (TIMPs) might influence extracellular matrix degradation and deposition in chronic venous ulcers with the failure of the healing process. Our aim was to evaluate plasma concentration of gelatinases (MMP-2 and MMP-9) and their inhibitors (TIMP-1 and TIMP-2) in subjects with venous leg ulcers before and after the compression therapy. We enrolled 36 subjects (12 …