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Telemetric monitoring of 24 h intraocular pressure in conscious and freely moving C57BL/6J and CBA/CaJ mice
PURPOSE: To study change patterns of 24 h intraocular pressure (IOP) in conscious and freely moving mice using telemetry. METHODS: Adult C57BL/6J and CBA/CaJ mice were entrained to a standard 12 h light and 12 h dark cycle. A telemetric pressure transmitter was implanted subcutaneously on the upper...
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Formato: | Texto |
Lenguaje: | English |
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Molecular Vision
2008
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2324118/ https://www.ncbi.nlm.nih.gov/pubmed/18431454 |
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author | Li, Ruixia Liu, John H.K. |
author_facet | Li, Ruixia Liu, John H.K. |
author_sort | Li, Ruixia |
collection | PubMed |
description | PURPOSE: To study change patterns of 24 h intraocular pressure (IOP) in conscious and freely moving mice using telemetry. METHODS: Adult C57BL/6J and CBA/CaJ mice were entrained to a standard 12 h light and 12 h dark cycle. A telemetric pressure transmitter was implanted subcutaneously on the upper back of each light-dark entrained mouse, and the pressure catheter tip was inserted into the vitreous chamber. Broadcasted IOP data were received at 120 Hz. Means of 2 min IOP were recorded every 5 min for 4–13 days to generate the 24 h IOP pattern in each mouse strain. The pattern of IOP in the C57BL/6J strain was also determined under an acute constant dark condition for 24 h. RESULTS: There were distinct patterns of 24 h IOP in the C57BL/6J and CBA/CaJ mouse strains. Under the standard light-dark condition, IOP was higher during the dark period than the light period in both strains. Elevation in IOP from the light period to the dark period was significantly smaller in the CBA/CaJ strain (1.6±1.7 mmHg, mean± standard deviation (SD), n=21) than in the C57BL/6J strain (3.4±2.5 mmHg, n=20). The 24 h IOP pattern in the C57BL/6J strain persisted under an acute constant dark condition (n=8). CONCLUSIONS: Distinct change patterns of 24 h IOP appeared in these two mouse strains. Although mean IOP during the dark period was significantly higher than the light period in both strains, the magnitudes of light-dark IOP elevation differed. The 24 h IOP change pattern can be driven endogenously in the absence of light. |
format | Text |
id | pubmed-2324118 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2008 |
publisher | Molecular Vision |
record_format | MEDLINE/PubMed |
spelling | pubmed-23241182008-04-22 Telemetric monitoring of 24 h intraocular pressure in conscious and freely moving C57BL/6J and CBA/CaJ mice Li, Ruixia Liu, John H.K. Mol Vis Research Article PURPOSE: To study change patterns of 24 h intraocular pressure (IOP) in conscious and freely moving mice using telemetry. METHODS: Adult C57BL/6J and CBA/CaJ mice were entrained to a standard 12 h light and 12 h dark cycle. A telemetric pressure transmitter was implanted subcutaneously on the upper back of each light-dark entrained mouse, and the pressure catheter tip was inserted into the vitreous chamber. Broadcasted IOP data were received at 120 Hz. Means of 2 min IOP were recorded every 5 min for 4–13 days to generate the 24 h IOP pattern in each mouse strain. The pattern of IOP in the C57BL/6J strain was also determined under an acute constant dark condition for 24 h. RESULTS: There were distinct patterns of 24 h IOP in the C57BL/6J and CBA/CaJ mouse strains. Under the standard light-dark condition, IOP was higher during the dark period than the light period in both strains. Elevation in IOP from the light period to the dark period was significantly smaller in the CBA/CaJ strain (1.6±1.7 mmHg, mean± standard deviation (SD), n=21) than in the C57BL/6J strain (3.4±2.5 mmHg, n=20). The 24 h IOP pattern in the C57BL/6J strain persisted under an acute constant dark condition (n=8). CONCLUSIONS: Distinct change patterns of 24 h IOP appeared in these two mouse strains. Although mean IOP during the dark period was significantly higher than the light period in both strains, the magnitudes of light-dark IOP elevation differed. The 24 h IOP change pattern can be driven endogenously in the absence of light. Molecular Vision 2008-04-18 /pmc/articles/PMC2324118/ /pubmed/18431454 Text en http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Li, Ruixia Liu, John H.K. Telemetric monitoring of 24 h intraocular pressure in conscious and freely moving C57BL/6J and CBA/CaJ mice |
title | Telemetric monitoring of 24 h intraocular pressure in conscious and freely moving C57BL/6J and CBA/CaJ mice |
title_full | Telemetric monitoring of 24 h intraocular pressure in conscious and freely moving C57BL/6J and CBA/CaJ mice |
title_fullStr | Telemetric monitoring of 24 h intraocular pressure in conscious and freely moving C57BL/6J and CBA/CaJ mice |
title_full_unstemmed | Telemetric monitoring of 24 h intraocular pressure in conscious and freely moving C57BL/6J and CBA/CaJ mice |
title_short | Telemetric monitoring of 24 h intraocular pressure in conscious and freely moving C57BL/6J and CBA/CaJ mice |
title_sort | telemetric monitoring of 24 h intraocular pressure in conscious and freely moving c57bl/6j and cba/caj mice |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2324118/ https://www.ncbi.nlm.nih.gov/pubmed/18431454 |
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