- Tytuł:
- Effects of 1-methylnicotinamide and its metabolite N-methyl-2-pyridone-5-carboxamide on streptozotocin-induced toxicity in murine insulinoma MIN6 cell line
- Autorzy:
-
Przygodzki, Tomasz
Slominska, Ewa
Polakowska, Ewa
Mlynarski, Wojciech
Watala, Cezary - Powiązania:
- https://bibliotekanauki.pl/articles/1039953.pdf
- Data publikacji:
- 2011
- Wydawca:
- Polskie Towarzystwo Biochemiczne
- Tematy:
-
nucleotide pool
streptozotocine
1-methylnicotinamide
N-methyl-2-pyridone-5-carboxamide - Opis:
- 1-methylnicotinamide (MNA) is a primary metabolite of nicotinamide. In recent years several activities of MNA have been described, such as anti-inflammatory activity in skin diseases, induction of prostacyclin synthesis via COX-2, aortal endothelium protection in diabetes and hypertriglyceridaemia and increased survival rate of diabetic rats. 1-methylnicotinamide was also suggested to protect pancreatic cells from streptozotocin in vivo. Streptozotocin toxicity is known to be mediated by poly-ADP-ribose polymerase. Nicotinamide and its derivatives have been shown to ameliorate poly-ADP-ribose polymerase-dependent nucleotide pool reduction. We aimed to verify if 1-methylnicotinamide and its metabolite, N-methyl-2-pyridone-5-carboxamide, can protect insulinoma cells from streptozotocin-induced toxicity. We found that N-methyl-2-pyridone-5-carboxamide, but not 1-methylnicotinamide, restores the pool of ATP and NAD+ in streptozotocin-treated cells, but neither compound improved the cell viability. We conclude that inhibition of poly-ADP-ribose polymerase-dependent nucleotide pool reduction may not be sufficient to protect cells from streptozotocin toxicity.
- Źródło:
-
Acta Biochimica Polonica; 2011, 58, 1; 75-77
0001-527X - Pojawia się w:
- Acta Biochimica Polonica
- Dostawca treści:
- Biblioteka Nauki
Artykuł