Immune response in addicts with chronic hepatitis C treated with interferon and ribavirin.

Background: The role played by the immune system in the progression of chronic hepatitis C (CHC) is not completely clear. Opioids may facilitate the outbreak of infections through marked immunomodulating effects on the immune response against a virus. To asses if addicts can be treated successfully with interferon (IFN) during detoxification treatment, we evaluated some immune response mediators in addicts affected by CHC.

Circulating erythropoietin in microalbuminuric type 2 diabetic patients with normal renal function: a pilot study.

To verify the hypothesis of an early impairment of erythropoietin (Epo) production and to assess the adequacy of its circulating levels in diabetic nephropathy, we investigated Epo values in 18 microalbuminuric type 2 diabetic patients with normal renal function (7 anaemic and 11 nonanaemic), 24 subjects with uncomplicated iron-deficiency anaemia, and 15 healthy controls comparable for sex and age. Mean+/-S.D.

Oxidative stress, nitric oxide, endothelial dysfunction and tinnitus.

To assess whether pathogenic endothelial dysfunction is involved in acute idiopathic tinnitus we enrolled 44 patients and 25 healthy volunteers. In blood from the internal jugular vein and brachial vein we determined malonaldehyde, 4-hydroxynonenal, myeloperoxidase, glutathione peroxidase, nitric oxide, L-arginine and L-ornitine, thrombomodulin (TM) and von Willebrand factor (vWF) activity during tinnitus and asymptomatic period. Higher plasma concentrations of oxidative markers and L-arginine, and lower nitric oxide and L-ornitine levels were observed in jugular blood of patients with tinnitus, there being a significant difference between brachial and jugular veins.

Effects of antioxidant supplementation on postprandial oxidative stress and endothelial dysfunction: a single-blind, 15-day clinical trial in patients with untreated type 2 diabetes, subjects with impaired glucose tolerance, and healthy controls.

Background: Increased generation of reactive oxygen species (ROS) and oxidative stress may be of crucial importance in the pathogenesis of endothelial damage. Furthermore, there is understood to be a relationship between endothelial damage, glycemic control, disorders of lipid metabolism, and coagulative hemostatic disorders.

Objective: This study investigated within- and between-group changes in various circulating markers of oxidation-reduction balance and endothelial function after a balanced moderate-fat meal with and without antioxidant supplementation in patients with early-stage, untreated type 2 diabetes mellitus; subjects with impaired glucose tolerance (IGT); and healthy controls.

Circulating adhesion molecules in patients with virus-related chronic diseases of the liver.

Aim: In the inflammatory state, intercellular adhesion molecule-1 (ICAM-1) and vascular cellular adhesion molecule-1 (VCAM-1) play a key role in promoting migration of immunological cells from the circulation to target site. Aim of our study was to investigate soluble forms of these molecules in patients with virus-related chronic liver diseases, to assess their behavior in different pathologies and correlation with severity of liver damage.

Methods: Circulating ICAM-1 and VCAM-1 were assayed by EIA commercial kits (R and D System Co.

Plasma erythropoietin levels in anaemic and non-anaemic patients with chronic liver diseases.

Aim: To investigate the serum erythropoietin (Epo) levels in patients with chronic liver diseases and to compare to subjects with iron-deficiency anaemia and healthy controls.

Methods: We examined 31 anaemic (ALC) and 22 non-anaemic (NALC) cirrhotic patients, 21 non- anaemic subjects with chronic active hepatitis (CAH), 24 patients with iron-deficiency anaemia (ID) and 15 healthy controls. Circulating Epo levels (ELISA; R and D Systems, Europe Ltd, Abingdon, UK) and haemoglobin (Hb) concentration were determined in all subjects.

Can ultrasonographic findings of perihepatic lymphadenopathy promote investigations to detect possible presence of virus C infection in non-symptomatic subjects?

PURPOSE: Only early detection of non-symptomatic patients is able to arrest the diffusion of the non-symptomatic HCV infection and lead to prompt treatment. Our aim was to attempt to correlate the presence of perihepatic lymph nodes and hepatitis C infection and to assess whether ultrasonography can have a role to promote specific investigations for pre-clinical diagnosis of virus C infection. METHOD: We performed a controlled study on a cohort of 7974 subjects from a town of 27000 inhabitants on the eastern coast of Sicily.

Controlled clinical trial to assess the response of recent heroin abusers with chronic hepatitis C virus infection to treatment with interferon alpha-n2b.

Background: Chronic infection with hepatitis C virus (HCV) is the most common infectious disease among heroin abusers, but it is recommended that specific treatment with interferon be delayed until at least 6 to 12 months after the end of drug addiction.

Objective: We investigated the response of heroin abusers to interferon treatment shortly after the end of detoxification treatment with methadone.

Methods: We studied 2 homogeneous groups of white Italian patients with chronic HCV infection: former male heroin abusers and males without a history of drug addiction.