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Celični redukcijski stres
ID
Blagovič, Nastja
(
Author
),
ID
Jamnik, Polona
(
Mentor
)
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Abstract
Tako oksidacijski kot redukcijski stres v celici lahko povzročata poškodbe, vendar je redukcijski stres veliko slabše raziskan. Redukcijski stres je posledica kopičenja reducentov ob hkratni nespremenjeni koncentraciji oksidantov. Po drugi strani redukcijski stres lahko tudi povzroči oksidacijski stres. Redoks reakcije so za normalno delovanje celice ključnega pomena, saj ustvarjajo energijo v obliki ATP. Prav zato je izredno pomembno, da je prisotno redoks ravnotežje, to je stanje, ko je prisotno ravnovesje med encimskimi in neencimskimi antioksidacijskimi sistemi ter produkcijo reaktivnih kisikovih zvrsti (ROS). Presežek reducentov v celici, kot so GSH, NADH ali čezmerno izražanje antioksidacijskih sistemov, lahko v celici izčrpa vse ROS in s tem povzroči redukcijski stres. Posledice redukcijskega stresa lahko opazujemo na celični ravni (zmanjšanje odziva celične rasti, zmanjšana funkcija mitohondrijev, znižanje aktivnosti metabolizma), hkrati pa je redukcijski stres lahko tudi vzrok za različna patološka stanja, kot so kardiovaskularne bolezni, rak, Alzheimerjeva bolezen itd.
Language:
Slovenian
Keywords:
Redukcijski stres
,
oksidacijski stres
,
celični metabolizem
,
reaktivne kisikove zvrsti
,
antioksidanti
,
redoks
Work type:
Bachelor thesis/paper
Typology:
2.11 - Undergraduate Thesis
Organization:
BF - Biotechnical Faculty
Place of publishing:
Ljubljana
Publisher:
[N. Blagovič]
Year:
2022
PID:
20.500.12556/RUL-138154
UDC:
606:61:601.4:577.2:576.36(043.2)
COBISS.SI-ID:
114940931
Publication date in RUL:
12.07.2022
Views:
1680
Downloads:
117
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BLAGOVIČ, Nastja, 2022,
Celični redukcijski stres
[online]. Bachelor’s thesis. Ljubljana : N. Blagovič. [Accessed 18 May 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=138154
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Secondary language
Language:
English
Title:
Cell reductive stress
Abstract:
Both oxidative and reductive stress cause cell damage, but reductive stress is much less researched. Reductive stress is caused by the accumulation of reducing agents while the concentration of oxidants remains unchanged. However, reductive stress can also induce oxidative stress. Redox reactions are crucial for normal cell function since they generate energy in the form of ATP. This is why the redox balance in the cell is extremely important. Redox balance is a state where the enzymatic and non-enzymatic antioxidant systems and the production of reactive oxygen species (ROS) are in balance. A surplus of reducing agents in the cell, such as GSH and NADH, or an over-regulation of the antioxidant systems can cause the depletion of ROS in the cell, leading to reductive stress. The consequences of reductive stress can be observed at the cellular level (reduced cell growth, reduced mitochondrial function, reduced metabolic activity). At the same time, reductive stress can also be the cause of various pathological conditions such as cardiovascular diseases, cancer, Alzheimer's disease, etc.
Keywords:
Reductive stress
,
cell metabolism
,
oxidative stress
,
reactive oxygen species
,
antioxidant
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