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001-es BibID:BIBFORM084638
Első szerző:Sztanek Ferenc (orvos)
Cím:Effect of alpha-lipoic acid treatment on plasma asymmetric dimethylarginine, a biomarker of endothelial dysfunction in diabetic neuropathy / Ferenc Sztanek, Hajnalka Lőrincz, Ágnes Molnár, Anita Szentpéteri, Eszter Zöld, Ildikó Seres, Dénes Páll, Mariann Harangi, Péter Kempler, György Paragh
Dátum:2020
ISSN:1734-1922
Megjegyzések:Introduction: Diabetic neuropathy may develop on a background of hyperglycemia and is associated with increased oxidative stress. Elevated asymmetric dimethylarginine (ADMA) levels are linked to oxidative stress reducing the synthesis of nitric oxide (NO) by uncoupling NO synthase. Oxidative stress induces considerable changes in nerve conduction velocity in diabetic patients. There is strong evidence that alpha-lipoic acid (ALA) as an antioxidant may improve nerve conduction and relieve neuropathic symptoms. We aimed to investigate the relationship between endothelial dysfunction and NO synthesis in type 2 diabetic patients with peripheral neuropathy after ALA treatment. Materials and Methods: Fifty-four type 2 diabetic patients with neuropathy were included in the study. Serum ADMA concentration, ICAM-1, VCAM-1, oxLDL and TNF-alpha levels were determined with ELISA. NO concentration was measured by Griess reaction. Peripheral sensory nerve function was assessed by current perception threshold (CPT) testing. Autonomic function was assessed by Ewing's five standard cardiovascular reflex tests (CAS). Results: ADMA levels were significantly decreased (0.62?0.11 vs. 0.53?0.11 ?mol/l, p<0.001), as well as TNF-alpha concentrations (1.21?0.42 pg/ml vs. 1.05?0.5 pg/ml, p<0.05); while NO levels were significantly increased (16.78?11.1 vs. 21.58?8.84 ?mol/l, p<0.05) after six month of 600 mg/day ALA treatment. VCAM-1, ICAM-1 and oxLDL levels did not change significantly. The CPT and CAS significantly improved after ALA treatment. The improvement of current perception threshold values was correlated positively with the change of ADMA levels (r=0.58, p<0.001). Change in ADMA level was more pronounced in responder patients based on both CPT and CAS. Conclusions: Our results suggest that ALA supplementation improves endothelial function characterized by serum levels of ADMA and TNF-alpha in patients with diabetic neuropathy. Changes in serum ADMA levels may predict the clinical response to ALA treatment.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
diabetic neuropathy
cardiac autonomic neuropathy
nitric oxide
asymmetric dimethylarginine
alpha-lipoic acid
Megjelenés:Archives of Medical Science. - 2020 (2020), p. 1-9. -
További szerzők:Lőrincz Hajnalka (1986-) (biológus) Molnár Ágnes (1972-) (gyógytornász) Szentpéteri Anita (1988-) (biológus) Zöld Eszter (1988-) (szemész) Seres Ildikó (1954-) (biokémikus) Páll Dénes (1967-) (belgyógyász, kardiológus) Harangi Mariann (1974-) (belgyógyász, endokrinológus) Kempler Péter (1954-) (belgyógyász, diabetológus) Paragh György (1953-) (belgyógyász)
Pályázati támogatás:OTKA-115723
OTKA
EFOP-3.6.2-16-2017-00009
EFOP
Internet cím:DOI
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