Factors influencing individual variability in high fat diet-induced weight gain in out-bred MF1 mice

L M Vaanholt, R E Sinclair, S E Mitchell, J R Speakman

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Easy access to high-energy palatable foods has been suggested to have contributed to the world-wide obesity epidemic. However, within these 'obesogenic' environments many people manage to remain lean. Mice also show variability in their weight gain responses to high-fat diet (HFD) feeding and their weight loss responses to calorically restricted (CR) feeding. In this study we investigated which factors contribute to determining susceptibility to HFD-induced obesity in mice, and whether the responses in weight gain on HFD are correlated with the responses to CR. One-hundred twenty four mice were exposed to 30% CR for 28days followed by a 14day recovery period, and subsequent exposure to 60% HFD for 28days. Responses in various metabolic factors were measured before and after each exposure (body mass; BM, body composition, food intake; FI, resting metabolic rate; RMR, physical activity, body temperature and glucose tolerance; GT). Weight changes on HFD ranged from -1 to 26%, equivalent to -0.2g to 10.5g in absolute mass. Multiple regression models showed that fat free mass (FFM) of the mice before exposure to HFD predicted 12% of the variability in weight gain on HFD (p<0.001). Also, FI during the first week of HFD feeding predicted 20% of the variability in BM and fat mass (FM) gain 4weeks later. These data may point to a role for the reward system in driving individual differences in FI and weight gain. Weight gain on the HFD was significantly negatively correlated to weight loss on CR, indicating that animals that are poor at defending against weight gain on HFD, were also poor at defending against CR-induced weight loss. Changes in FM and FFM in response to HFD or CR were not correlated however.

Original languageEnglish
Pages (from-to)146-155
Number of pages10
JournalPhysiology and Behavior
Volume144
Early online date24 Mar 2015
DOIs
Publication statusPublished - 15 May 2015

Fingerprint

High Fat Diet
Weight Gain
Fats
Weight Loss
Obesity
Basal Metabolism
Body Composition
Body Temperature
Reward
Individuality
Eating
Weights and Measures
Glucose
Food

Keywords

  • Animals
  • Basal Metabolism
  • Body Composition
  • Body Temperature
  • Body Weight
  • Caloric Restriction
  • Diet, High-Fat
  • Eating
  • Female
  • Food Preferences
  • Glucose Tolerance Test
  • Linear Models
  • Male
  • Mice
  • Motor Activity
  • Obesity
  • Rest
  • Statistics, Nonparametric

Cite this

Factors influencing individual variability in high fat diet-induced weight gain in out-bred MF1 mice. / Vaanholt, L M; Sinclair, R E; Mitchell, S E; Speakman, J R.

In: Physiology and Behavior, Vol. 144, 15.05.2015, p. 146-155.

Research output: Contribution to journalArticle

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abstract = "Easy access to high-energy palatable foods has been suggested to have contributed to the world-wide obesity epidemic. However, within these 'obesogenic' environments many people manage to remain lean. Mice also show variability in their weight gain responses to high-fat diet (HFD) feeding and their weight loss responses to calorically restricted (CR) feeding. In this study we investigated which factors contribute to determining susceptibility to HFD-induced obesity in mice, and whether the responses in weight gain on HFD are correlated with the responses to CR. One-hundred twenty four mice were exposed to 30{\%} CR for 28days followed by a 14day recovery period, and subsequent exposure to 60{\%} HFD for 28days. Responses in various metabolic factors were measured before and after each exposure (body mass; BM, body composition, food intake; FI, resting metabolic rate; RMR, physical activity, body temperature and glucose tolerance; GT). Weight changes on HFD ranged from -1 to 26{\%}, equivalent to -0.2g to 10.5g in absolute mass. Multiple regression models showed that fat free mass (FFM) of the mice before exposure to HFD predicted 12{\%} of the variability in weight gain on HFD (p<0.001). Also, FI during the first week of HFD feeding predicted 20{\%} of the variability in BM and fat mass (FM) gain 4weeks later. These data may point to a role for the reward system in driving individual differences in FI and weight gain. Weight gain on the HFD was significantly negatively correlated to weight loss on CR, indicating that animals that are poor at defending against weight gain on HFD, were also poor at defending against CR-induced weight loss. Changes in FM and FFM in response to HFD or CR were not correlated however.",
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N1 - Acknowledgements Thanks to all members of the Energetics Group, Victoria Magee and Bethany Garner in particular, for their invaluable help at various stages of the project. This work was conducted under Home Office Project License 60/3706 and L.M.V. was funded by a Rubicon grant from the Netherlands Organisation for Scientific Research (NWO).

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AB - Easy access to high-energy palatable foods has been suggested to have contributed to the world-wide obesity epidemic. However, within these 'obesogenic' environments many people manage to remain lean. Mice also show variability in their weight gain responses to high-fat diet (HFD) feeding and their weight loss responses to calorically restricted (CR) feeding. In this study we investigated which factors contribute to determining susceptibility to HFD-induced obesity in mice, and whether the responses in weight gain on HFD are correlated with the responses to CR. One-hundred twenty four mice were exposed to 30% CR for 28days followed by a 14day recovery period, and subsequent exposure to 60% HFD for 28days. Responses in various metabolic factors were measured before and after each exposure (body mass; BM, body composition, food intake; FI, resting metabolic rate; RMR, physical activity, body temperature and glucose tolerance; GT). Weight changes on HFD ranged from -1 to 26%, equivalent to -0.2g to 10.5g in absolute mass. Multiple regression models showed that fat free mass (FFM) of the mice before exposure to HFD predicted 12% of the variability in weight gain on HFD (p<0.001). Also, FI during the first week of HFD feeding predicted 20% of the variability in BM and fat mass (FM) gain 4weeks later. These data may point to a role for the reward system in driving individual differences in FI and weight gain. Weight gain on the HFD was significantly negatively correlated to weight loss on CR, indicating that animals that are poor at defending against weight gain on HFD, were also poor at defending against CR-induced weight loss. Changes in FM and FFM in response to HFD or CR were not correlated however.

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