| Título: | Exendin-4 and sitagliptin protect kidney from ischemia-reperfusion injury through suppressing oxidative stress and inflammatory reaction |
| Autores: |
Chen, Yen-Ta Tsai, Tzu-Hsien Yang, Chih-Chau Sun, Cheuk-Kwan Chang, Li-Teh Chen, Hung-Hwa Chang, Chia-Lo Sung, Pei-Hsun Zhen, Yen-Yi Leu, Steve Chang, Hsueh-Wen Chen, Yung-Lung Yip, Hon-Kan |
| Fecha: | 2013-10-25 |
| Publicador: | BioMed Central Ltd. |
| Fuente: |
Ver documento |
| Tipo: | Research |
| Tema: | Exendin-4, Sitagliptin, Acute ischemia-reperfusion injury, Inflammation, Oxidative stress |
| Descripción: | Abstract Background This study tested the hypothesis that exendin-4 and sitagliptin can effectively protect kidney from acute ischemia-reperfusion (IR) injury. Methods Adult SD-rats (n = 48) equally divided into group 1 (sham control), group 2 (IR injury), group 3 [IR + sitagliptin 600 mg/kg at post-IR 1, 24, 48 hr)], and group 4 [IR + exendin-4 10 μm/kg at 1 hr after procedure] were sacrificed after 24 and 72 hrs (n = 6 at each time from each group) following clamping of bilateral renal pedicles for 60 minutes (groups 2–4). Results Serum creatinine level and urine protein to creatinine ratio were highest in group 2 and lowest in group 1 (all p < 0.001) without notable differences between groups 3 and 4. Kidney injury score, expressions of inflammatory biomarkers at mRNA (MMP-9, TNF-α, IL-1β, PAI-1), protein (TNF-α, NF-κB and VCAM-1), and cellular (CD68+) levels in injured kidneys at 24 and 72 hr showed an identical pattern compared to that of creatinine level in all groups (all p < 0.0001). Expressions of oxidized protein, reactive oxygen species (NOX-1, NOX-2), apoptosis (Bax, caspase-3 and PARP), and DNA damage marker (γH2AX+) of IR kidney at 24 and 72 hrs exhibited a pattern similar to that of inflammatory mediators among all groups (all p < 0.01). Renal expression of glucagon-like peptide-1 receptor, and anti-oxidant biomarkers at cellular (GPx, GR) and protein (NQO-1, HO-1, GPx) levels at 24 and 72 hr were lowest in group 1, significantly lower in group 2 than in groups 3 and 4 (all p < 0.01). Conclusion Exendin-4 and sitagliptin provided significant protection for the kidneys against acute IR injury. |
| Idioma: | Inglés |