Abstract
Sirtuins, silent information regulator 2 (Sir 2) proteins, belong to the family of NAD+-dependent enzymes with deacetylase or mono-ADP-ribosyltransferase activity. These enzymes are responsible for processes of DNA repair or recombination, chromosomal stability and gene transcription. In mammals, sirtuins occur in seven varieties, from 1 to 7 (SIRT1–SIRT7), differing among themselves with location. SIRT1, the best known variety, exerts its effects on proteins via NAD+ coenzymes, being thus associated with cellular energetic metabolism and the ‘red–ox’ state. Its deficits are, among others, concomitant with stressful situations and associated with pathophysiologies of many medical conditions, including diabetes mellitus, cardiovascular diseases, neurodegenerative syndromes and kidney diseases. In kidney disorders, it promotes (stimulates) the survival of cells in an affected kidney by modulating their responses to various stress stimuli, takes part in arterial blood pressure control, protects against cellular apoptosis in renal tubules by catalase induction and triggers autophagy. More and more available in vitro and in vivo data indicate SIRT1 activity to be oriented, among others, towards nephroprotection. Thus, SIRT1 may become a novel element in the therapy of age-related renal diseases, including diabetic nephropathy.
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Abbreviations
- ACE:
-
Angiotensin-converting-enzyme
- Atg5:
-
Autophagy protein 5
- Atg7:
-
Autophagy protein 7
- ATP:
-
Adenosine-5'-triphosphate
- COX2 :
-
Cyclooxygenase-II enzyme
- CR:
-
Caloric restriction
- DNA:
-
Deoxyribonucleic acid
- Dot1:
-
Disruptor of telomeric silencing-1
- ENaC:
-
Epithelial sodium channel
- ERK:
-
Extracellular signal-regulated kinases
- FOXO3 :
-
Forkhead box O3
- FXR:
-
farnesoid X receptor
- HIF-2a:
-
hypoxia-inducible factor
- Ku70:
-
Protein that, in humans, is encoded by the XRCC6 gene
- LC3:
-
protein light chain 3
- LXR:
-
liver X receptor
- Lys310:
-
lysine 310
- NAD+ :
-
Nicotinamide adenine dinucleotide
- NAM:
-
Generating nicotinamide
- NF-κB:
-
Nuclear factor kappa B
- NO:
-
Nitrogen oxide
- PGE2 :
-
prostaglandin E2
- AT1R:
-
angiotensin II receptor, type 1
- SIRT:
-
Silent information regulator
- Smad3:
-
Mothers against decapentaplegic homolog 3
- SREBP:
-
sterol regulatory element binding proteins
- TGF-β1:
-
Transforming growth factor beta
- UCP2:
-
uncoupling protein 2
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Polak-Jonkisz, D., Laszki-Szcząchor, K., Rehan, L. et al. Nephroprotective action of sirtuin 1 (SIRT1). J Physiol Biochem 69, 957–961 (2013). https://doi.org/10.1007/s13105-013-0268-1
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DOI: https://doi.org/10.1007/s13105-013-0268-1