Impairment of acetylcholine-mediated endothelium-dependent relaxation in isolated parotid artery of the alloxan-induced diabetic rabbit
Нема приказа
Аутори
Roganović, JelenaRadenković, Miroslav
Tanić, Nikola
Tanić, Nasta
Petrović, Nina
Stojić, Dragica Lj.
Чланак у часопису
Метаподаци
Приказ свих података о документуАпстракт
The aim of this study was to assess the effect of type 1 diabetes mellitus (induced by a single intravenous injection of 100 mg kg(-1) of alloxan) on acetylcholine (ACh)-induced relaxation in isolated rabbit parotid gland feeding artery. Isometric force measurements and quantification of inducible nitric oxide synthase (iNOS) mRNA by real-time RT-PCR were made in parotid artery rings from diabetic and control rabbits. Acetylcholine induced concentration- and endothelium-dependent vasorelaxation that was significantly decreased in parotid artery rings from diabetic rabbits. Schild analysis of the ACh vasorelaxant effect, in the presence of selective muscarinic receptor antagonists, revealed involvement of the M(3) receptor subtype in parotid artery rings from both control and diabetic rabbits, with no change in antagonist affinity constants. The inhibitory effects of indomethacin, a non-selective inhibitor of cyclooxygenase, and of high potassium, an inhibitor of hyperpolarization, on A...Ch vasorelaxation were increased. The effect of N(G)-nitro-L-arginine, a non-selective inhibitor of NOS, was decreased in diabetes. S-methylisothiourea, a selective inhibitor of iNOS, significantly reduced ACh vasorelaxation only in parotid artery rings from diabetic rabbits. Also, up-regulation of iNOS mRNA expression was detected in parotid artery rings from diabetic rabbits. These results suggest that in parotid artery rings from diabetic rabbits, impaired endothelium-dependent vasorelaxation to ACh appears to be caused by the loss of a nitric oxide-mediated component and increased iNOS expression, and is unlikely to be caused by a change at the M(3) receptor level.
Кључне речи:
acetylcholine / diabetes / rabbit parotid arteryИзвор:
European Journal of Oral Sciences, 2011, 119, 5, 352-360Финансирање / пројекти:
DOI: 10.1111/j.1600-0722.2011.00851.x
ISSN: 0909-8836
PubMed: 21896051
WoS: 000294808000004
Scopus: 2-s2.0-80052538432
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Институција/група
VinčaTY - JOUR AU - Roganović, Jelena AU - Radenković, Miroslav AU - Tanić, Nikola AU - Tanić, Nasta AU - Petrović, Nina AU - Stojić, Dragica Lj. PY - 2011 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4480 AB - The aim of this study was to assess the effect of type 1 diabetes mellitus (induced by a single intravenous injection of 100 mg kg(-1) of alloxan) on acetylcholine (ACh)-induced relaxation in isolated rabbit parotid gland feeding artery. Isometric force measurements and quantification of inducible nitric oxide synthase (iNOS) mRNA by real-time RT-PCR were made in parotid artery rings from diabetic and control rabbits. Acetylcholine induced concentration- and endothelium-dependent vasorelaxation that was significantly decreased in parotid artery rings from diabetic rabbits. Schild analysis of the ACh vasorelaxant effect, in the presence of selective muscarinic receptor antagonists, revealed involvement of the M(3) receptor subtype in parotid artery rings from both control and diabetic rabbits, with no change in antagonist affinity constants. The inhibitory effects of indomethacin, a non-selective inhibitor of cyclooxygenase, and of high potassium, an inhibitor of hyperpolarization, on ACh vasorelaxation were increased. The effect of N(G)-nitro-L-arginine, a non-selective inhibitor of NOS, was decreased in diabetes. S-methylisothiourea, a selective inhibitor of iNOS, significantly reduced ACh vasorelaxation only in parotid artery rings from diabetic rabbits. Also, up-regulation of iNOS mRNA expression was detected in parotid artery rings from diabetic rabbits. These results suggest that in parotid artery rings from diabetic rabbits, impaired endothelium-dependent vasorelaxation to ACh appears to be caused by the loss of a nitric oxide-mediated component and increased iNOS expression, and is unlikely to be caused by a change at the M(3) receptor level. T2 - European Journal of Oral Sciences T1 - Impairment of acetylcholine-mediated endothelium-dependent relaxation in isolated parotid artery of the alloxan-induced diabetic rabbit VL - 119 IS - 5 SP - 352 EP - 360 DO - 10.1111/j.1600-0722.2011.00851.x ER -
@article{ author = "Roganović, Jelena and Radenković, Miroslav and Tanić, Nikola and Tanić, Nasta and Petrović, Nina and Stojić, Dragica Lj.", year = "2011", abstract = "The aim of this study was to assess the effect of type 1 diabetes mellitus (induced by a single intravenous injection of 100 mg kg(-1) of alloxan) on acetylcholine (ACh)-induced relaxation in isolated rabbit parotid gland feeding artery. Isometric force measurements and quantification of inducible nitric oxide synthase (iNOS) mRNA by real-time RT-PCR were made in parotid artery rings from diabetic and control rabbits. Acetylcholine induced concentration- and endothelium-dependent vasorelaxation that was significantly decreased in parotid artery rings from diabetic rabbits. Schild analysis of the ACh vasorelaxant effect, in the presence of selective muscarinic receptor antagonists, revealed involvement of the M(3) receptor subtype in parotid artery rings from both control and diabetic rabbits, with no change in antagonist affinity constants. The inhibitory effects of indomethacin, a non-selective inhibitor of cyclooxygenase, and of high potassium, an inhibitor of hyperpolarization, on ACh vasorelaxation were increased. The effect of N(G)-nitro-L-arginine, a non-selective inhibitor of NOS, was decreased in diabetes. S-methylisothiourea, a selective inhibitor of iNOS, significantly reduced ACh vasorelaxation only in parotid artery rings from diabetic rabbits. Also, up-regulation of iNOS mRNA expression was detected in parotid artery rings from diabetic rabbits. These results suggest that in parotid artery rings from diabetic rabbits, impaired endothelium-dependent vasorelaxation to ACh appears to be caused by the loss of a nitric oxide-mediated component and increased iNOS expression, and is unlikely to be caused by a change at the M(3) receptor level.", journal = "European Journal of Oral Sciences", title = "Impairment of acetylcholine-mediated endothelium-dependent relaxation in isolated parotid artery of the alloxan-induced diabetic rabbit", volume = "119", number = "5", pages = "352-360", doi = "10.1111/j.1600-0722.2011.00851.x" }
Roganović, J., Radenković, M., Tanić, N., Tanić, N., Petrović, N.,& Stojić, D. Lj.. (2011). Impairment of acetylcholine-mediated endothelium-dependent relaxation in isolated parotid artery of the alloxan-induced diabetic rabbit. in European Journal of Oral Sciences, 119(5), 352-360. https://doi.org/10.1111/j.1600-0722.2011.00851.x
Roganović J, Radenković M, Tanić N, Tanić N, Petrović N, Stojić DL. Impairment of acetylcholine-mediated endothelium-dependent relaxation in isolated parotid artery of the alloxan-induced diabetic rabbit. in European Journal of Oral Sciences. 2011;119(5):352-360. doi:10.1111/j.1600-0722.2011.00851.x .
Roganović, Jelena, Radenković, Miroslav, Tanić, Nikola, Tanić, Nasta, Petrović, Nina, Stojić, Dragica Lj., "Impairment of acetylcholine-mediated endothelium-dependent relaxation in isolated parotid artery of the alloxan-induced diabetic rabbit" in European Journal of Oral Sciences, 119, no. 5 (2011):352-360, https://doi.org/10.1111/j.1600-0722.2011.00851.x . .