BACKGROUND AND PURPOSE: In acute stroke, Iron (Fe) may amplify reperfusion injury by catalyzing the conversion of superoxide and hydrogen peroxide into highly reactive radicals. Transferrin (Tf) is the main protein regulating Fe homeostasis, whereas Ceruplasmin (CP) is a circulating ferroxidase enzyme able to oxidize ferrous ions to less toxic ferric forms. This study aims at investigating whether CP, Copper (Cu), Tf, and Fe play a role in the pathophysiology of acute stroke. METHODS: We enrolled 35 acute stroke patients and 44 controls. All patients underwent: neurological examination assessed by National Institutes of Health Stroke Scale (NIHSS), ultrasound evaluation of carotid atherosclerosis, brain MRI to quantify ischemic lesion volume and measurement of serum levels of CP, Cu, Tf, Fe, hydro-peroxides, and Total plasmatic antioxidant capacity. RESULTS: In patients, NIHSS scores were associated with Tf (r=-0.48, P=0.004), hydro-peroxides (r=0.34, P=0.046), CP (r=0.43, P=0.012), and lesion volume (r=0.50, P=0.004). Lesion volume was inversely associated with Tf (r=-0.44, P=0.012). CP and hydro-peroxides were also largely related (r=0.81, P<0.001). The model multiple R was 0.57, resulting in a 32.5% of explained NIHSS variance with Tf accounting for 23.4% and CP for 9.1%. CONCLUSIONS: CP and Tf levels are representative of clinical status in acute stroke patients. Our findings suggest a protective role of Tf in acute stroke and a possible ambivalent role of CP.
BACKGROUND AND PURPOSE: In acute stroke, Iron (Fe) may amplify reperfusion injury by catalyzing the conversion of superoxide and hydrogen peroxide into highly reactive radicals. Transferrin (Tf) is the main protein regulating Fe homeostasis, whereas Ceruplasmin (CP) is a circulating ferroxidase enzyme able to oxidize ferrous ions to less toxic ferric forms. This study aims at investigating whether CP, Copper (Cu), Tf, and Fe play a role in the pathophysiology of acute stroke. METHODS: We enrolled 35 acute strokepatients and 44 controls. All patients underwent: neurological examination assessed by National Institutes of Health Stroke Scale (NIHSS), ultrasound evaluation of carotid atherosclerosis, brain MRI to quantify ischemic lesion volume and measurement of serum levels of CP, Cu, Tf, Fe, hydro-peroxides, and Total plasmatic antioxidant capacity. RESULTS: In patients, NIHSS scores were associated with Tf (r=-0.48, P=0.004), hydro-peroxides (r=0.34, P=0.046), CP (r=0.43, P=0.012), and lesion volume (r=0.50, P=0.004). Lesion volume was inversely associated with Tf (r=-0.44, P=0.012). CP and hydro-peroxides were also largely related (r=0.81, P<0.001). The model multiple R was 0.57, resulting in a 32.5% of explained NIHSS variance with Tf accounting for 23.4% and CP for 9.1%. CONCLUSIONS: CP and Tf levels are representative of clinical status in acute strokepatients. Our findings suggest a protective role of Tf in acute stroke and a possible ambivalent role of CP.
Authors: Phanichand Kodali; Karnakar R Chitta; Julio A Landero Figueroa; Joseph A Caruso; Opeolu Adeoye Journal: Metallomics Date: 2012-09-14 Impact factor: 4.526
Authors: S Mariani; M Ventriglia; I Simonelli; G Spalletta; S Bucossi; M Siotto; F Assogna; J M Melgari; F Vernieri; R Squitti Journal: Front Aging Neurosci Date: 2013-08-05 Impact factor: 5.750
Authors: Daniela Frizon Alfieri; Marcio Francisco Lehmann; Tamires Flauzino; Maria Caroline Martins de Araújo; Nicolas Pivoto; Rafaele Maria Tirolla; Andrea Name Colado Simão; Michael Maes; Edna Maria Vissoci Reiche Journal: Neurotox Res Date: 2020-05-15 Impact factor: 3.911