| Abstract: | Influence of environmental salinity on expression of distinct corticosteroid receptor (CR) genes, glucocorticoid receptor (GR)-1 and -2, and mineralcorticoid receptor (MR), was examined in osmoregulatory and hemopoietic organs and leucocytes of steelhead trout (Oncorhynchus mykiss). There was no significant difference in plasma cortisol levels between freshwater (FW)- or seawater (SW)-acclimated trout, whereas Na+, K+-ATPase was activated in gill of SW fish. Plasma lysozyme levels also showed a significant increase after acclimation to SW. In SW-acclimated fish, mRNA levels of GR-1, GR-2, and MR were significantly higher in gill and body kidney than those in FW. Head kidney and spleen showed no significant change in these CR mRNA levels after SW-acclimation. On the other hand, leucocytes isolated from head kidney and peripheral blood showed significant decreases in mRNA levels of CR in SW-acclimated fish. These results showed differential regulation of gene expression of CR between osmoregulatory and immune systems. ?? 2008 Elsevier Inc. All rights reserved. |
| Genre: | Article |
| ProdID: | 70032068 |
| Citation Author: | Yada, T.; Hyodo, S.; Schreck, C. B. |
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| Citation End Page: | 627 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | General and Comparative Endocrinology |
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| Citation Number Of Pages: | 6 |
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| Citation Search Results Text: | Effects of seawater acclimation on mRNA levels of corticosteroid receptor genes in osmoregulatory and immune systems in trout; 2008; Article; Journal; General and Comparative Endocrinology; Yada, T.; Hyodo, S.; Schreck, C. B. |
| Citation Start Page: | 622 |
| Citation Volume: | 156 |
| Citation Year: | 2008 |
| Type: | citation/reference |
| Text: | Effects of seawater acclimation on mRNA levels of corticosteroid receptor genes in osmoregulatory and immune systems in trout; 2008; Article; Journal; General and Comparative Endocrinology; Yada, T.; Hyodo, S.; Schreck, C. B. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1016/j.ygcen.2008.02.009 |
| Date Other: | Tue, 1 Jan 2008 00:00 -0600 |
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