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5 March 2015 Optical cryoimaging of rat kidney and the effective role of chromosome 13 in salt-induced hypertension
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Abstract
The objective of this work is to assess oxidative stress levels in salt-sensitive hypertension animal model using 3D optical cryoimager to image mitochondrial redox ratio. We studied Dahl salt-induced (SS) rats, and compared the results with a consomic SS rat strain (SSBN13). The SSBN13 strain was developed by the introgression of chromosome from the Brown Norway (BN) rat into the salt-sensitive (SS) genetic background and exhibits significant protection from salt induced hypertension1 . These two groups were fed on a high salt diet of 8.0% NaCl for one week. Mitochondrial redox ratio (NADH/FAD=NADH RR), was used as a quantitative marker of the oxidative stress in kidney tissue. Maximum intensity projected images and their corresponding histograms in each group were acquired from each kidney group. The result showed a 49% decrease in mitochondrial redox ratio of SS compared to SSBN13 translated to an increase in the level of oxidative stress of the tissue. Therefore, the results quantify oxidative stress levels and its effect on mitochondrial redox in salt sensitive hypertension.
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F. Salehpour, Chun Yang, Theresa Kurth, A. W. Cowley Jr., and M. Ranji "Optical cryoimaging of rat kidney and the effective role of chromosome 13 in salt-induced hypertension", Proc. SPIE 9321, Optical Interactions with Tissue and Cells XXVI, 932113 (5 March 2015); https://doi.org/10.1117/12.2079549
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