TY - JOUR
T1 - Effects of weight gain and loss on metabolic rate, glucose tolerance, and serum lipids in domestic cats
AU - Fettman, M. J.
AU - Stanton, C. A.
AU - Banks, L. L.
AU - Johnson, D. E.
AU - Hamar, D. W.
AU - Davies, Rebecca L
AU - Johnston, S.
N1 - Funding Information:
Supported by a postdoctoral fellowship for Dr Stanton from Hill’s Pet Products, Inc., Topeka, KS and a research grant from Mark Morris Associates, Topeka, KS.
PY - 1998
Y1 - 1998
N2 - Weight gain is a common problem in domestic cats, but little is known about its metabolic effects. The purpose of this study was to determine the effects of diet-induced weight gain and subsequent weight loss on metabolic rate, body composition, and glucose tolerance. Gain of approximately 20 per cent body weight (divided approximately equally between fat and fat-free mass) over three months resulted in insulin resistance in females, indicated by increases in basal insulin concentration (68·2 ±7·9 to 119 ±16·5 pmol litre-1, P<0·05), insulin peak response to glucose (241·1 ±31·6 to 315·0 ±23·0 pmol litre-1, P<0·05), and ΔI/ΔG (14·2 ±2·6 to 18·1 ±1·3 pmol mmol-1, P<0·05) compared with pre-gain values. The same numerical trend was noted in male cats, however, changes were not significant (P>0·05). Alterations in serum lipids included significant (P<0·05) elevations in triglyceride concentrations in male cals and decreased β-lipoprotein concentrations in both genders. Weight loss over three months normalised basal insulin, insulin response to glucose, and serum triglyceride concentrations, and resulted in significant (P<0·05) decreases in serum concentrations of β- and preβ-lipoproteins. cholesterol, and triiodothyronine. Diet-induced weight gain of three months' duration, followed by three months' maintenance of increased body weight did not affect fasting or resting metabolic rate. Development and severity of impaired glucose tolerance, insulin resistance, and other changes may be affected by duration and possibly severity of weight gain.
AB - Weight gain is a common problem in domestic cats, but little is known about its metabolic effects. The purpose of this study was to determine the effects of diet-induced weight gain and subsequent weight loss on metabolic rate, body composition, and glucose tolerance. Gain of approximately 20 per cent body weight (divided approximately equally between fat and fat-free mass) over three months resulted in insulin resistance in females, indicated by increases in basal insulin concentration (68·2 ±7·9 to 119 ±16·5 pmol litre-1, P<0·05), insulin peak response to glucose (241·1 ±31·6 to 315·0 ±23·0 pmol litre-1, P<0·05), and ΔI/ΔG (14·2 ±2·6 to 18·1 ±1·3 pmol mmol-1, P<0·05) compared with pre-gain values. The same numerical trend was noted in male cats, however, changes were not significant (P>0·05). Alterations in serum lipids included significant (P<0·05) elevations in triglyceride concentrations in male cals and decreased β-lipoprotein concentrations in both genders. Weight loss over three months normalised basal insulin, insulin response to glucose, and serum triglyceride concentrations, and resulted in significant (P<0·05) decreases in serum concentrations of β- and preβ-lipoproteins. cholesterol, and triiodothyronine. Diet-induced weight gain of three months' duration, followed by three months' maintenance of increased body weight did not affect fasting or resting metabolic rate. Development and severity of impaired glucose tolerance, insulin resistance, and other changes may be affected by duration and possibly severity of weight gain.
UR - http://www.scopus.com/inward/record.url?scp=0031616981&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031616981&partnerID=8YFLogxK
U2 - 10.1016/S0034-5288(98)90108-4
DO - 10.1016/S0034-5288(98)90108-4
M3 - Article
C2 - 9557799
AN - SCOPUS:0031616981
VL - 64
SP - 11
EP - 16
JO - Research in Veterinary Science
JF - Research in Veterinary Science
SN - 0034-5288
IS - 1
ER -