Abstract
The nucleus tractus solitarius (NTS) of the brainstem is an important site for the regulation of sympathetic nerve activity. In the brain, nitric oxide (NO) has been shown to reduce blood pressure by inhibiting sympathetic nerve activity. However, most studies were performed in an acute state of anesthesia. Therefore, we developed a technique to increase the local production of NO in vivo by the transfer of endothelial NO synthase (eNOS) gene into the NTS. Adenovirus vectors encoding either the β-galactosidase gene (Adβgal) or the eNOS gene (AdeNOS) were infected into the NTS. In the Adβgal-infected rats, the local expression of β-galactosidase was confirmed by X-Gal staining, and β-galactosidase activity was quantified using a colorimetric assay. In the AdeNOS-infected rats, the local expression of eNOS was confirmed by immunohistochemistry and Western blot analysis. Production of NO was measured by in vivo microdialysis. Blood pressure and heart rate were monitored by a radiotelemetry system in a conscious state. In the AdeNOS-infected rats, blood pressure and heart rate significantly decreased from d 5 to d 10, and then gradually recovered over time. These methods should be useful in examining the local effect on cardiovascular function of a particular substance produced by a specific gene in the brain.
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References
Patel, K. P., Li, Y.-F., and Hirooka, Y. (2001) Role of nitric oxide in central sympathetic outflow. Exp. Biol. Med. 226, 814–824.
Harada, S., Tokunaga, S., Momohara, M., et al. (1993) Inhibition of nitric oxide formation in the nucleus tractus solitarius increases renal sympathetic nerve activity in rabbits. Circ. Res. 72, 511–516.
Zanzinger, J., Czachurski, J., and Seller, H. (1997) Neuronal nitric oxide reduces sympathetic excitability by modulation of central glutamate effects in pigs. Circ. Res. 80, 565–571.
Tseng, C.-J., Liu, H.-Y., Lin, H.-C., et al. (1996) Cardiovascular effects of nitric oxide in the brain stem nuclei of rats. Hypertension 27, 36–42.
Dampney, R. A. L. (1994) Functional organization of central pathways regulating the cardiovascular system. Physiol. Rev. 74, 323–364.
van Giersbergen, P. L. M., Palkovits, M., and de Jong, W. (1992) Involvement of neurotransmitters in the nucleus tractus solitarii in cardiovascular regulation. Physiol. Rev. 72, 789–824.
Andresen, M. C. (1994) Nucleus tractus solitarius: gateway to neural circulatory control. Annu. Rev. Physiol. 56, 93–116.
Shihara, M., Hirooka, Y., Eshima, K., et al. (2001) Stimulatory effect of endothelin-1 on neurons in the nucleus tractus solitarii is mediated by non-N-methyl-D-aspartate receptors. Hypertens. Res. 24, 137–142.
Hirooka, Y., Kishi, T., Sakai, K., et al. (2003) Effect of overproduction of nitric oxide in the brain stem on the cardiovascular response in conscious rats. J. Cardiovasc. Pharmacol. 41(Suppl. 1), S119–S126.
Sakai, K., Hirooka, Y., Matsuo, I., et al. (2000) Overexpression of eNOS in NTS causes hypotension and bradycardia in vivo. Hypertension 36, 1023–1028.
Hirooka, Y., Sakai, K., Kishi, T., et al. (2001) Adenovirus-mediated gene transfer into the NTS in conscious rats: a new approach to examining the central control of cardiovascular regulation. Ann. NY Acad. Sci. 940, 197–205.
Hirooka, Y., Sakai, K., Ito, K., et al. (2003) Enhanced depressor response to endothelial nitric oxide synthase gene transfer into the nucleus tractus solitarii of spontaneously hypertensive rats. Hypertens. Res. 26, 325–331.
Davidson, B. L., Allen, E. D., Kozarsky, K. F., et al. (1993) A model system for in vivo gene transfer into the central nervous system using an adenoviral vector. Nature Genet. 3, 219–223.
Ooboshi, H., Welsh, M. J., Rios, C. D., et al. (1995) Adenovirus-mediated gene transfer in vivo to cerebral blood vessels and perivascular tissue. Circ. Res. 77, 7–13.
Ooboshi, H., Chu, Y., Rios, C. D., et al. (1997) Altered vascular function after adenovirus-mediated overexpression of endothelial nitric oxide synthase. Am. J. Physiol. 273, H265–H270.
Paxinos, G. and Watoson, C. (1998) The rat brain in stereotaxic coordinates, in The Rat Brain in Stereotaxic Coordinates, Academic, New York.
Ueno, H., Li, J.-J., Tomita, H., et al. (1995) Quantitative analysis of repeat adenovirus-mediated gene transfer into injured canine femoral arteries. Arteriosclerosis Thromb. Vasc. Biol. 15, 2246–2253.
Eustice, D. C., Feldman, P. A., Colberg-Poley, A. M., et al. (1991) A sensitive method for the detection of β-galactosidase in transfected mammalian cells. BioTechniques 11, 739–741.
Bradford, M. M. (1976) A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding. Anal. Biochem. 72, 248–254.
Chen, A. F. Y., O’Brien, T., Tsutsui, M., et al. (1997) Expression and function of recombinant endothelial nitric oxide synthase gene in canine basilar artery. Circ. Res. 80, 327–335.
Cable, D. G., O’Brian, T., Kullo, I. J., et al. (1997) Expression and function of a recombinant endothelial nitric oxide synthase gene in porcine coronary arteries. Cardiovasc. Res. 35, 553–559.
Kosaka, K., Toida, K., Margolis, F. L., et al. (1997) Chemically defined neuron groups and their subpopulations in the glomerular layer of the rat main olfactory bulb, II: prominent differences in the intraglomerular dendritic arborization and their relationship to olfactory nerve terminals. Neuroscience 76, 775–786.
Yamada, K. and Nabeshima, T. (1997) Simultaneous measurement of nitrite and nitrate levels as indices of nitric oxide release in the cerebellum of conscious rats. J. Neurochem. 68, 1234–1243.
Matsuo, I., Hirooka, Y., Hironaga, K., et al. (2001) Glutamate release via NO production evoked by NMDA in the NTS enhances hypotension and bradycardia in vivo. Am. J. Physiol. Regul. Integr. Comp. Physiol. 280, R1285–R1291.
Anderson, N. H., Devlin, A. M., Graham, D., et al. (1999) Telemetry for cardiovascular monitoring in a pharmacological study: new approaches to data analysis. Hypertension 33, 248–255.
van den Buuse, M. (1994) Circadian rhythm of blood pressure, heart rate, and locomotor activity in spontaneously hypertensive rats as measured with radiotelemetry. Physiol. Behav. 55, 783–787.
Hironaga, K., Hirooka, Y., Matsuo, I., et al. (1998) Role of endogenous nitric oxide in the brain stem on the rapid adaptation of baroreflex. Hypertension 31, 27–31.
Byrnes, A. P., Rusby, J. E., Wood, M. J. A., et al. (1995) Adenovirus gene transfer causes inflammation in the brain. Neuroscience 66, 1015–1024.
Tomita, H., Egashira, K., Kubo-Inoue, M., et al. (1998) Inhibition of NO synthesis induces inflammatory changes and monocyte chemoattractant protein-1 expression in rat hearts and vessels. Arteriosclerosis Thromb. Vasc. Biol. 18, 1456–1464.
Mannes, A. J., Caudle, R. M., O’Connell, B. C., et al. (1998) Adenoviral gene transfer to spinal-cord neurons: intrathecal vs intraparechymal administration. Brain Res. 793, 1–6.
Sinnayah, P., Lindley, T. E., Staber, P. D., et al. (2002) Selective gene transfer to key cardiovascular regions of the brain: comparison of two viral vector systems. Hypertension 39, 603–608.
Okada, T., Nomoto, T., Shimazaki, K., et al. (2002) Adeno-associated virus vectors for gene transfer to the brain. Methods 28, 237–247.
Kuo, H., Ingram, D. K., Crystal, R. G., et al. (1995) Retrograde transfer of replicant deficient recombinant adenovirus vector in the central nervous system for tracing. Brain Res. 705, 31–38.
Vasquez, E. C., Beltz, T. G., Meyrelles, S. S., et al. (1999) Adenovirus-mediated gene delivery to hypothalamic magnocellular neurons in mice. Hypertension 34, 756–761.
Kishi, T., Hirooka, Y., Sakai, K., et al. (2001) Overexpression of eNOS in the RVLM causes hypotension and bradycardia via GABA release. Hypertension 38, 896–901.
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Hirooka, Y., Sakai, K. (2004). Adenovirus-Mediated Nitric Oxide Synthase Gene Transfer Into the Nucleus Tractus Solitarius in Conscious Rats. In: Hassid, A. (eds) Nitric Oxide Protocols. Methods in Molecular Biology™, vol 279. Humana Press. https://doi.org/10.1385/1-59259-807-2:187
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DOI: https://doi.org/10.1385/1-59259-807-2:187
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