Yıl: 2003 Cilt: 33 Sayı: 3 Sayfa Aralığı: 141 - 147 Metin Dili: İngilizce İndeks Tarihi: 29-07-2022

Histological changes in the rat thoracic aorta after chronic nitric oxide synthase inhibition

Öz:
The objective of this study was to determine the morphological effects of chronic nitric oxide (NO) inhibition oh the thoracic aorta of Wistar rats. Fifteen male Wistar albino rats were divided into three groups. Group 1 rats (control group, n=5) received tap water, group II rats (n=5) recieved 100 mg/lg L-NAME (madatate NO inhibition) and group III rats (n= 5) received 500 mg/lg L-NAME, in drinking water (severe NO inhibition) for 15 days. At the end of 15 days, the carotid arteries of the rats were cannulated and their blood pressure was measured. The rats were sacrificed and thoracic aorta segments were fixed 10% neutral buffered formalin solution and examined by light microscope. The blood pressure results were expressed as the arithmetic mean ± SEM. Statistical analysis of the data was performed by the Kruskal Wallis H test ( p < 0.05). The differences between the groups were evaluated by the Mann-Whitney U test. Group I showed normal blood pressure and histology. Groups II and III had hypertensive blood pressure and showed vascular wall thickening. Irregular luminal layers of the endothelial cell linings and increased intensity of anti-alpha-SMA labeling were seen in both experimental groups. Our results revealed that chronic NO inhibition led to hypertension and structural changes in the thoracic aorta wall in Wistar rats.
Anahtar Kelime: Rats, Wistar NG-Nitroarginine Methyl Ester Microscopy, Polarization Nitric Oxide Aorta, Thoracic

Konular: Cerrahi
Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
  • 1. Epstein FH. Mechanism of disease: The L-Arginine-Nitric oxide pathway. The New England Journal of Medicine 329: 2002-2012, 1993. 2. Babai P, Pechanova O, Bernatoval I, et al. Chronic inhibition of NO synthesis produces myocardial fibrosis and arterial media hyperplasia. Histology and Histopathology 12: 623-629, 1997. 3. Sarkar R, Meinberg EG, Stanley JC, et al. Nitric oxide reversibly inhibits the migration of cultured vascular smooth muscle cells. Circulation Research 78: 225-230, 1996. 4. Akira I, Kensuke E, Toshiaki K, et al. Chronic inhibition of endotheliumderived nitric oxide synthesis causes coronary microvascular structural changes and hyperreactivity to serotonin in pigs. Circulation 92: 2636- 2644, 1995. 5. Baylis C, Mitruka B, Deng A. Chronic blockade of nitric oxide synthesis in the rat produces systemic hypertension and glomerular damage. J Clin Invest 90: 278-281, 1992. 6. Cayatta AJ, Palacino JJ, Horten K, et al. Chronic inhibition of nitric oxide production accelerates neointima formation and impairs endothelial function in hypercholesterolemic rabbits. Arterioscler Thromb 14: 753- 759, 1994.
  • 7. Rossi MA, Colombini-Netto M. Chronic inhibition of NO synthesis per se promotes structural intimal remodelling of the rat aorta. Journal of Hypertension 19: 1567-1579, 2001. 8. Kristek F, Gerova M. Long-term NO synthase inhibition affects heart weight and geometry of coronary and carotid arteries. Physiol Res; 45: 361-367, 1996. 9. Yoneyama T, Ohkawa S, Watanabe T, et al. The contribution of nitric oxide to renal vascular wall thickening in rats with L-NAME-induced hypertension. Virchows Arch 433: 549-557, 1998. 10. Titus JL, Kim H. Blood vessels and lymphatics. In: AndersonÕs Pathology. Kissane JM (ed). Vol II, 9th ed, CV Mosby Co. USA, 1990; 756-757. 11. Bezie Y, Lacoley P, Laurent S, et al. Connection of smooth muscle cells to elastic lamellae in aorta of spontaneously hypertensive rats. Hypertension 32: 166-169, 1998. 12. Jones R, Jacobson M, Steudel W. a- Smooth-muscle cells in pulmonary hypertension. American Journal of Respiratory Cell and Molecular Biology 20: 582-594, 1999. 13. Pereira LMM, Vianna GMM, Mandarimde- Lacerda CA. Stereology of the myocardium in hypertensive rats. Difference in relation to the time of inhibition of nitric oxide synthesis. Virchows Arch 433: 369-373, 1998. 14. Guyton JR, Dao DT, Lidsay KL. Ultrastructure of hypertensive rat aorta. Increased basement membranelike material. Hypertension 15: 56-67, 1990.
APA VARDI N, Öztürk F, FADILLIOĞLU E, OTLU A, YAĞMURCA M (2003). Histological changes in the rat thoracic aorta after chronic nitric oxide synthase inhibition. , 141 - 147.
Chicago VARDI Nigar,Öztürk Feral,FADILLIOĞLU Ersin,OTLU Ali,YAĞMURCA Murat Histological changes in the rat thoracic aorta after chronic nitric oxide synthase inhibition. (2003): 141 - 147.
MLA VARDI Nigar,Öztürk Feral,FADILLIOĞLU Ersin,OTLU Ali,YAĞMURCA Murat Histological changes in the rat thoracic aorta after chronic nitric oxide synthase inhibition. , 2003, ss.141 - 147.
AMA VARDI N,Öztürk F,FADILLIOĞLU E,OTLU A,YAĞMURCA M Histological changes in the rat thoracic aorta after chronic nitric oxide synthase inhibition. . 2003; 141 - 147.
Vancouver VARDI N,Öztürk F,FADILLIOĞLU E,OTLU A,YAĞMURCA M Histological changes in the rat thoracic aorta after chronic nitric oxide synthase inhibition. . 2003; 141 - 147.
IEEE VARDI N,Öztürk F,FADILLIOĞLU E,OTLU A,YAĞMURCA M "Histological changes in the rat thoracic aorta after chronic nitric oxide synthase inhibition." , ss.141 - 147, 2003.
ISNAD VARDI, Nigar vd. "Histological changes in the rat thoracic aorta after chronic nitric oxide synthase inhibition". (2003), 141-147.
APA VARDI N, Öztürk F, FADILLIOĞLU E, OTLU A, YAĞMURCA M (2003). Histological changes in the rat thoracic aorta after chronic nitric oxide synthase inhibition. Turkish Journal of Medical Sciences, 33(3), 141 - 147.
Chicago VARDI Nigar,Öztürk Feral,FADILLIOĞLU Ersin,OTLU Ali,YAĞMURCA Murat Histological changes in the rat thoracic aorta after chronic nitric oxide synthase inhibition. Turkish Journal of Medical Sciences 33, no.3 (2003): 141 - 147.
MLA VARDI Nigar,Öztürk Feral,FADILLIOĞLU Ersin,OTLU Ali,YAĞMURCA Murat Histological changes in the rat thoracic aorta after chronic nitric oxide synthase inhibition. Turkish Journal of Medical Sciences, vol.33, no.3, 2003, ss.141 - 147.
AMA VARDI N,Öztürk F,FADILLIOĞLU E,OTLU A,YAĞMURCA M Histological changes in the rat thoracic aorta after chronic nitric oxide synthase inhibition. Turkish Journal of Medical Sciences. 2003; 33(3): 141 - 147.
Vancouver VARDI N,Öztürk F,FADILLIOĞLU E,OTLU A,YAĞMURCA M Histological changes in the rat thoracic aorta after chronic nitric oxide synthase inhibition. Turkish Journal of Medical Sciences. 2003; 33(3): 141 - 147.
IEEE VARDI N,Öztürk F,FADILLIOĞLU E,OTLU A,YAĞMURCA M "Histological changes in the rat thoracic aorta after chronic nitric oxide synthase inhibition." Turkish Journal of Medical Sciences, 33, ss.141 - 147, 2003.
ISNAD VARDI, Nigar vd. "Histological changes in the rat thoracic aorta after chronic nitric oxide synthase inhibition". Turkish Journal of Medical Sciences 33/3 (2003), 141-147.