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Effects of oats on plasma cholesterol and lipoproteins in C57BL/6 mice are substrain specific.

Andersson, Kristina E LU ; Immerstrand, Tina LU ; Swärd, Karl LU ; Bergenståhl, Björn LU ; Lindholm, Marie LU ; Öste, Rickard LU and Hellstrand, Per LU (2010) In British Journal of Nutrition 103. p.513-521
Abstract
Cholesterol-lowering effects of oats have been demonstrated in both animals and human subjects. However, the crucial properties of oat-containing diets that determine their health effects need to be further investigated to optimise their use. A mouse model would be a valuable tool, but few such studies have been published to date. We investigated the effects of oat bran on plasma cholesterol and lipoproteins in two substrains of C57BL/6 mice. Western diet was made atherogenic by the addition of 0.8 % cholesterol and 0.1 % cholic acid. After 4 weeks on atherogenic diet, total plasma cholesterol had increased from 1.86-2.53 to 3.77-4.40 mmol/l. In C57BL/6NCrl mice, inclusion of 27 and 40 % oat bran reduced total plasma cholesterol by 19 and... (More)
Cholesterol-lowering effects of oats have been demonstrated in both animals and human subjects. However, the crucial properties of oat-containing diets that determine their health effects need to be further investigated to optimise their use. A mouse model would be a valuable tool, but few such studies have been published to date. We investigated the effects of oat bran on plasma cholesterol and lipoproteins in two substrains of C57BL/6 mice. Western diet was made atherogenic by the addition of 0.8 % cholesterol and 0.1 % cholic acid. After 4 weeks on atherogenic diet, total plasma cholesterol had increased from 1.86-2.53 to 3.77-4.40 mmol/l. In C57BL/6NCrl mice, inclusion of 27 and 40 % oat bran reduced total plasma cholesterol by 19 and 24 %, respectively, reduced the shift from HDL to LDL+VLDL and caused increased faecal cholesterol excretion. There was no effect of oat bran on plasma levels of the inflammatory markers fibrinogen, serum amyloid A or TNF-alpha. Contrary to findings in C57BL/6NCrl mice, there was no sustained effect of oat bran (27 or 40 %) on plasma cholesterol in C57BL/6JBomTac mice after 4 weeks of feeding. Thus, C57BL/6NCrl mice fed an atherogenic diet are a good model for studies of physiological effects of oats, whereas a substrain derived from C57BL/6J, raised in a different breeding environment and likely possessing functional genetic differences from C57BL/6N, is considerably less responsive to oats. The present finding that two substrains of mice respond differently to oats is of practical value, but can also help to elucidate mechanisms of the cholesterol-lowering effect of oats. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
British Journal of Nutrition
volume
103
pages
513 - 521
publisher
Cambridge University Press
external identifiers
  • wos:000274804900007
  • pmid:19840420
  • scopus:77649198133
ISSN
1475-2662
DOI
10.1017/S000711450999211X
language
English
LU publication?
yes
id
4ca35c79-2bc5-42e4-9bdb-bebd4c1a094a (old id 1500207)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/19840420?dopt=Abstract
date added to LUP
2009-11-03 13:55:35
date last changed
2018-05-29 10:03:08
@article{4ca35c79-2bc5-42e4-9bdb-bebd4c1a094a,
  abstract     = {Cholesterol-lowering effects of oats have been demonstrated in both animals and human subjects. However, the crucial properties of oat-containing diets that determine their health effects need to be further investigated to optimise their use. A mouse model would be a valuable tool, but few such studies have been published to date. We investigated the effects of oat bran on plasma cholesterol and lipoproteins in two substrains of C57BL/6 mice. Western diet was made atherogenic by the addition of 0.8 % cholesterol and 0.1 % cholic acid. After 4 weeks on atherogenic diet, total plasma cholesterol had increased from 1.86-2.53 to 3.77-4.40 mmol/l. In C57BL/6NCrl mice, inclusion of 27 and 40 % oat bran reduced total plasma cholesterol by 19 and 24 %, respectively, reduced the shift from HDL to LDL+VLDL and caused increased faecal cholesterol excretion. There was no effect of oat bran on plasma levels of the inflammatory markers fibrinogen, serum amyloid A or TNF-alpha. Contrary to findings in C57BL/6NCrl mice, there was no sustained effect of oat bran (27 or 40 %) on plasma cholesterol in C57BL/6JBomTac mice after 4 weeks of feeding. Thus, C57BL/6NCrl mice fed an atherogenic diet are a good model for studies of physiological effects of oats, whereas a substrain derived from C57BL/6J, raised in a different breeding environment and likely possessing functional genetic differences from C57BL/6N, is considerably less responsive to oats. The present finding that two substrains of mice respond differently to oats is of practical value, but can also help to elucidate mechanisms of the cholesterol-lowering effect of oats.},
  author       = {Andersson, Kristina E and Immerstrand, Tina and Swärd, Karl and Bergenståhl, Björn and Lindholm, Marie and Öste, Rickard and Hellstrand, Per},
  issn         = {1475-2662},
  language     = {eng},
  pages        = {513--521},
  publisher    = {Cambridge University Press},
  series       = {British Journal of Nutrition},
  title        = {Effects of oats on plasma cholesterol and lipoproteins in C57BL/6 mice are substrain specific.},
  url          = {http://dx.doi.org/10.1017/S000711450999211X},
  volume       = {103},
  year         = {2010},
}