US National Library of Medicine National Institutes of Health
Free Radic Biol Med. 2017 Oct;111:281-293. doi: 10.1016/j.freeradbiomed.2016.12.046. Epub 2017 Jan 4.
Linking lipid peroxidation and neuropsychiatric disorders: focus on 4-hydroxy-2-nonenal. Romano A1, Serviddio G2, Calcagnini S1, Villani R2, Giudetti AM3, Cassano T4, Gaetani S1.
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TIIVISTELMÄ, Abstract
4-HNE molekyyliä pidetään vahvana oksidatiivisen stressin merkitsijänä. 4-HNE ja soluproteiinit tekevät keskenään vuorovaikutuksen ja muodostuu 4-HNE-molekyyliin liittyneitä tuotteita, jotka voivat muuntaa soluhomeostaasia ja aiheuttaa patologisten tilojen kehkeytymistä. Aivot ovat hyvin altistuneita vapaiden radikaalien muodostumiselle ja HNE-molekyylin tapaisten aldehydien muodostumiselle koska ne ovat lipidipitoinen struktuuri ja niissä vallitsee korkea happipitoisuus ja redoxreaktioihin osallistuvia metallijoneja on läsnä.
- 4-hydroxy-2-nonenal (HNE) is considered to be a strong marker of oxidative stress; the interaction between HNE and cellular proteins leads to the formation of HNE-protein adducts able to alter cellular homeostasis and cause the development of a pathological state. By virtue of its high lipid concentration, oxygen utilization, and the presence of metal ions participating to redox reactions, the brain is highly susceptible to the formation of free radicals and HNE-related compounds.
Moneen neuropsykiatriseen häiriöön liittyy kohonnut HNE-pitoisuus. esimerkiksi harmaassa aivokuoressa on havaittu kohonnutta HNE-pitoisuutta bipolaarisessa taudissa ja skitsofreniassa, kun taas plasmassa on korkeita HNE-pitoisuuksia depressiossa. Lisäksi on havaittu huntingtonin taudissa kohonneita HNE-pitoisuuksia assosioituneena Huntingtonin inkluusiokappaleisiin. Parkinsonin taudissa esiintyy korkeaa HNE-pitoisuutta aivoissa ja aivoselkäydinnesteessä .Tässä tapauksessa HNE- pitoisuuden kohoama oli assosioituneena raudan akkumuloitumiseen substantia nigraan.
- A variety of neuropsychiatric disorders have been associated with elevations of HNE concentration. For example, increased levels of HNE were found in the cortex of bipolar and schizophrenic patients, while HNE plasma concentrations resulted high in patients with major depression. On the same line, high brain concentrations of HNE were found associated with Huntington's inclusions. The incidence of high HNE levels is relevant also in the brain and cerebrospinal fluid of patient suffering from Parkinson's disease. Intriguingly, in this case the increase of HNE was associated with an accumulation of iron in the substantia nigra, a brain region highly affected by the pathology.
- In the present review we recapitulate the findings supporting the role of HNE in the pathogenesis of different neuropsychiatric disorders to highlight the pathogenic mechanisms ascribed to HNE accumulation. The aim of this review is to offer novel perspectives both for the understanding of etiopathogenetic mechanisms that remain still unclear and for the identification of new useful biological markers. We conclude suggesting that targeting HNE-driven cellularprocesses may represent a new more efficacious therapeutical intervention.
4-HNE, 4-hydroxy-2-nonenal;
Huntington's disease;
Parkinson's disease;
bipolar disorders;
depression;
neuropsychiatric disorders;
schizophrenia
PMID:
28063940
DOI:
10.1016/j.freeradbiomed.2016.12.046
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