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Energy Restriction with Different Protein Quantities and Source: Implications for Innate Immunity

OBJECTIVE: Physical age, energy restriction (ER), and weight loss have been reported to suppress indices of innate immunity, which may increase the risk of illness. To evaluate these interactions, we recruited older, postmenopausal women (50 to 80 years) to fill one of the following 9-week ER (1250... Full description

Journal Title: Obesity research 2006, Vol.14(7), pp.1211-1218
Main Author: Mcfarlin , Brian K.
Other Authors: Flynn , Michael G. , Mahon , Anne K. , Stewart , Laura K. , Timmerman , Kyle L. , Lyle , Roseann M. , Campbell , Wayne W.
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 1071-7323
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recordid: faoagrisUS201301094293
title: Energy Restriction with Different Protein Quantities and Source: Implications for Innate Immunity
format: Article
creator:
  • Mcfarlin , Brian K.
  • Flynn , Michael G.
  • Mahon , Anne K.
  • Stewart , Laura K.
  • Timmerman , Kyle L.
  • Lyle , Roseann M.
  • Campbell , Wayne W.
subjects:
  • Zinc
  • Dietary Nutrient Sources
  • Very Low Calorie Diet
  • Dietary Carbohydrate
  • Beef
  • Dietary Minerals
  • Immunity
  • Iron
  • Dietary Protein
ispartof: Obesity research, 2006, Vol.14(7), pp.1211-1218
description: OBJECTIVE: Physical age, energy restriction (ER), and weight loss have been reported to suppress indices of innate immunity, which may increase the risk of illness. To evaluate these interactions, we recruited older, postmenopausal women (50 to 80 years) to fill one of the following 9-week ER (1250 kcal/d) groups: beef [n = 14; reported intakes 46% carbohydrate (CHO):24% protein (PRO):30% fat], chicken (n = 15; 51% CHO:25% PRO:24% fat), or CHO (n = 14; 59% CHO:17% PRO:24% fat), or a non-intervention control (n = 11). RESEARCH METHODS AND PROCEDURES: Fasting blood was collected before and after ER to determine leukocyte phenotype, neutrophil oxidative burst capacity, natural killer cell activity, stimulated interleukin-2 and interferon-γ production, and blood zinc and iron concentrations. RESULTS: No significant effects of ER (8.6% weight loss) or PRO quantity and source were found for the majority of indices of innate immunity. Small but significant (p < 0.05) declines in interleukin-2 production were found in the chicken and CHO groups only; however, the clinical significance of this finding is not known. DISCUSSION: In the present study, 9 weeks of moderate ER did not suppress immunity in postmenopausal women. Also, contrary to our hypothesis, differential zinc and iron intakes did not significantly alter immunity. ; Includes references ; p. 1211-1218.
language: eng
source:
identifier: ISSN: 1071-7323
fulltext: fulltext
issn:
  • 10717323
  • 1071-7323
url: Link


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titleEnergy Restriction with Different Protein Quantities and Source: Implications for Innate Immunity
creatorMcfarlin , Brian K. ; Flynn , Michael G. ; Mahon , Anne K. ; Stewart , Laura K. ; Timmerman , Kyle L. ; Lyle , Roseann M. ; Campbell , Wayne W.
ispartofObesity research, 2006, Vol.14(7), pp.1211-1218
identifierISSN: 1071-7323
subjectZinc ; Dietary Nutrient Sources ; Very Low Calorie Diet ; Dietary Carbohydrate ; Beef ; Dietary Minerals ; Immunity ; Iron ; Dietary Protein
descriptionOBJECTIVE: Physical age, energy restriction (ER), and weight loss have been reported to suppress indices of innate immunity, which may increase the risk of illness. To evaluate these interactions, we recruited older, postmenopausal women (50 to 80 years) to fill one of the following 9-week ER (1250 kcal/d) groups: beef [n = 14; reported intakes 46% carbohydrate (CHO):24% protein (PRO):30% fat], chicken (n = 15; 51% CHO:25% PRO:24% fat), or CHO (n = 14; 59% CHO:17% PRO:24% fat), or a non-intervention control (n = 11). RESEARCH METHODS AND PROCEDURES: Fasting blood was collected before and after ER to determine leukocyte phenotype, neutrophil oxidative burst capacity, natural killer cell activity, stimulated interleukin-2 and interferon-γ production, and blood zinc and iron concentrations. RESULTS: No significant effects of ER (8.6% weight loss) or PRO quantity and source were found for the majority of indices of innate immunity. Small but significant (p < 0.05) declines in interleukin-2 production were found in the chicken and CHO groups only; however, the clinical significance of this finding is not known. DISCUSSION: In the present study, 9 weeks of moderate ER did not suppress immunity in postmenopausal women. Also, contrary to our hypothesis, differential zinc and iron intakes did not significantly alter immunity. ; Includes references ; p. 1211-1218.
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titleEnergy Restriction with Different Protein Quantities and Source: Implications for Innate Immunity
descriptionOBJECTIVE: Physical age, energy restriction (ER), and weight loss have been reported to suppress indices of innate immunity, which may increase the risk of illness. To evaluate these interactions, we recruited older, postmenopausal women (50 to 80 years) to fill one of the following 9-week ER (1250 kcal/d) groups: beef [n = 14; reported intakes 46% carbohydrate (CHO):24% protein (PRO):30% fat], chicken (n = 15; 51% CHO:25% PRO:24% fat), or CHO (n = 14; 59% CHO:17% PRO:24% fat), or a non-intervention control (n = 11). RESEARCH METHODS AND PROCEDURES: Fasting blood was collected before and after ER to determine leukocyte phenotype, neutrophil oxidative burst capacity, natural killer cell activity, stimulated interleukin-2 and interferon-γ production, and blood zinc and iron concentrations. RESULTS: No significant effects of ER (8.6% weight loss) or PRO quantity and source were found for the majority of indices of innate immunity. Small but significant (p < 0.05) declines in interleukin-2 production were found in the chicken and CHO groups only; however, the clinical significance of this finding is not known. DISCUSSION: In the present study, 9 weeks of moderate ER did not suppress immunity in postmenopausal women. Also, contrary to our hypothesis, differential zinc and iron intakes did not significantly alter immunity. ; Includes references ; p. 1211-1218.
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abstractOBJECTIVE: Physical age, energy restriction (ER), and weight loss have been reported to suppress indices of innate immunity, which may increase the risk of illness. To evaluate these interactions, we recruited older, postmenopausal women (50 to 80 years) to fill one of the following 9-week ER (1250 kcal/d) groups: beef [n = 14; reported intakes 46% carbohydrate (CHO):24% protein (PRO):30% fat], chicken (n = 15; 51% CHO:25% PRO:24% fat), or CHO (n = 14; 59% CHO:17% PRO:24% fat), or a non-intervention control (n = 11). RESEARCH METHODS AND PROCEDURES: Fasting blood was collected before and after ER to determine leukocyte phenotype, neutrophil oxidative burst capacity, natural killer cell activity, stimulated interleukin-2 and interferon-γ production, and blood zinc and iron concentrations. RESULTS: No significant effects of ER (8.6% weight loss) or PRO quantity and source were found for the majority of indices of innate immunity. Small but significant (p < 0.05) declines in interleukin-2 production were found in the chicken and CHO groups only; however, the clinical significance of this finding is not known. DISCUSSION: In the present study, 9 weeks of moderate ER did not suppress immunity in postmenopausal women. Also, contrary to our hypothesis, differential zinc and iron intakes did not significantly alter immunity.
pubThe North American Association for the Study of Obesity
doi10.1038/oby.2006.138
eissn1930739X