Abstract
The Membrane Theory of Aging proposes that lifespan is inversely related to the level of unsaturation in membrane phospholipids. Calorie restriction (CR) without malnutrition extends lifespan in many model organisms, which may be related to alterations in membrane phospholipids fatty acids. During the last few years our research focused on studying how altering the predominant fat source affects the outcome of CR in mice. We have established four dietary groups: one control group fed 95 % of a pre-determined ad libitum intake (in order to prevent obesity), and three CR groups fed 40 % less than ad libitum intake. Lipid source for the control and one of the CR groups was soybean oil (high in n-6 PUFA) whereas the two remaining CR groups were fed diets containing fish oil (high in n-3 PUFA), or lard (high in saturated and monounsaturated fatty acids). Dietary intervention periods ranged from 1 to 18 months. We performed a longitudinal lifespan study and a cross-sectional study set up to evaluate several mitochondrial parameters which included fatty acid composition, H<sup>+</sup> leak, activities of electron transport chain enzymes, ROS generation, lipid peroxidation, mitochondrial ultrastructure, and mitochondrial apoptotic signaling in liver and skeletal muscle. These approaches applied to different cohorts of mice have independently indicated that lard as a fat source often maximizes the effects of 40 % CR on mice. These effects could be due to significant increases of monounsaturated fatty acids levels, in accordance with the Membrane Theory of Aging.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 655-670 |
| Number of pages | 16 |
| Journal | Biogerontology |
| Volume | 16 |
| Issue number | 5 |
| DOIs | |
| State | Published - Oct 31 2015 |
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Keywords
- Apoptotic signaling
- Calorie restriction
- Dietary fat
- Lifespan
- Mitochondria
- Proton leak
ASJC Scopus subject areas
- Geriatrics and Gerontology
- Gerontology
- Aging
Cite this
The influence of dietary fat source on liver and skeletal muscle mitochondrial modifications and lifespan changes in calorie-restricted mice. / Villalba, José Manuel; López-Domínguez, José Alberto; Chen, Yana; Khraiwesh, Husam; González-Reyes, José Antonio; del Río, Lucía Fernández; Gutiérrez-Casado, Elena; del Río, Mercedes; Calvo-Rubio, Miguel; Ariza, Julia; de Cabo, Rafael; López-Lluch, Guillermo; Navas, Plácido; Hagopian, Kevork; Burón, María Isabel; Ramsey, Jon J.
In: Biogerontology, Vol. 16, No. 5, 31.10.2015, p. 655-670.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The influence of dietary fat source on liver and skeletal muscle mitochondrial modifications and lifespan changes in calorie-restricted mice
AU - Villalba, José Manuel
AU - López-Domínguez, José Alberto
AU - Chen, Yana
AU - Khraiwesh, Husam
AU - González-Reyes, José Antonio
AU - del Río, Lucía Fernández
AU - Gutiérrez-Casado, Elena
AU - del Río, Mercedes
AU - Calvo-Rubio, Miguel
AU - Ariza, Julia
AU - de Cabo, Rafael
AU - López-Lluch, Guillermo
AU - Navas, Plácido
AU - Hagopian, Kevork
AU - Burón, María Isabel
AU - Ramsey, Jon J
PY - 2015/10/31
Y1 - 2015/10/31
N2 - The Membrane Theory of Aging proposes that lifespan is inversely related to the level of unsaturation in membrane phospholipids. Calorie restriction (CR) without malnutrition extends lifespan in many model organisms, which may be related to alterations in membrane phospholipids fatty acids. During the last few years our research focused on studying how altering the predominant fat source affects the outcome of CR in mice. We have established four dietary groups: one control group fed 95 % of a pre-determined ad libitum intake (in order to prevent obesity), and three CR groups fed 40 % less than ad libitum intake. Lipid source for the control and one of the CR groups was soybean oil (high in n-6 PUFA) whereas the two remaining CR groups were fed diets containing fish oil (high in n-3 PUFA), or lard (high in saturated and monounsaturated fatty acids). Dietary intervention periods ranged from 1 to 18 months. We performed a longitudinal lifespan study and a cross-sectional study set up to evaluate several mitochondrial parameters which included fatty acid composition, H+ leak, activities of electron transport chain enzymes, ROS generation, lipid peroxidation, mitochondrial ultrastructure, and mitochondrial apoptotic signaling in liver and skeletal muscle. These approaches applied to different cohorts of mice have independently indicated that lard as a fat source often maximizes the effects of 40 % CR on mice. These effects could be due to significant increases of monounsaturated fatty acids levels, in accordance with the Membrane Theory of Aging.
AB - The Membrane Theory of Aging proposes that lifespan is inversely related to the level of unsaturation in membrane phospholipids. Calorie restriction (CR) without malnutrition extends lifespan in many model organisms, which may be related to alterations in membrane phospholipids fatty acids. During the last few years our research focused on studying how altering the predominant fat source affects the outcome of CR in mice. We have established four dietary groups: one control group fed 95 % of a pre-determined ad libitum intake (in order to prevent obesity), and three CR groups fed 40 % less than ad libitum intake. Lipid source for the control and one of the CR groups was soybean oil (high in n-6 PUFA) whereas the two remaining CR groups were fed diets containing fish oil (high in n-3 PUFA), or lard (high in saturated and monounsaturated fatty acids). Dietary intervention periods ranged from 1 to 18 months. We performed a longitudinal lifespan study and a cross-sectional study set up to evaluate several mitochondrial parameters which included fatty acid composition, H+ leak, activities of electron transport chain enzymes, ROS generation, lipid peroxidation, mitochondrial ultrastructure, and mitochondrial apoptotic signaling in liver and skeletal muscle. These approaches applied to different cohorts of mice have independently indicated that lard as a fat source often maximizes the effects of 40 % CR on mice. These effects could be due to significant increases of monounsaturated fatty acids levels, in accordance with the Membrane Theory of Aging.
KW - Apoptotic signaling
KW - Calorie restriction
KW - Dietary fat
KW - Lifespan
KW - Mitochondria
KW - Proton leak
UR - http://www.scopus.com/inward/record.url?scp=84940477661&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84940477661&partnerID=8YFLogxK
U2 - 10.1007/s10522-015-9572-1
DO - 10.1007/s10522-015-9572-1
M3 - Article
C2 - 25860863
AN - SCOPUS:84940477661
VL - 16
SP - 655
EP - 670
JO - Biogerontology
JF - Biogerontology
SN - 1389-5729
IS - 5
ER -