Document Detail

Additive effects of dietary protein and energy deficiencies on diaphysis and bone tissue of rat femurs as determined by bending tests.
MedLine Citation:
PMID:  1797205     Owner:  NLM     Status:  MEDLINE    
The present study was designed to study the effects of diets moderately restricted in protein and/or carbohydrate derived calories on morphometric parameters (geometric properties) and mechanical performance of both diaphysis (structural properties) and cortical bone tissue (material properties) from growing rat femurs, as determined by bending tests at low strain rates. Male rats aged 30 days were divided in four groups, namely NN = normal protein and energy, NPLE = normal protein and low energy, LP = low protein and normal energy, and LPLE = low protein and low energy. Each group was fed on a corresponding diet for 20 days. Both body weight and femoral length were greater in NN and lower in LL than in LE and LP groups. Geometrical and structural variables (with the exception of wall/lumen ratio) grossly paralleled changes in body weight, while material properties showed independent and less significant changes. Therefore, the assayed levels of restriction of either plastic or energetic nutrients seemed to alter bone biomechanics proportionally to the way it affected bone growth.
J L Ferretti; R Capozza; G Cointry; C Bozzini; R M Alippi; C E Bozzini
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta physiologica, pharmacologica et therapeutica latinoamericana : órgano de la Asociación Latinoamericana de Ciencias Fisiológicas y [de] la Asociación Latinoamericana de Farmacología     Volume:  41     ISSN:  0327-6309     ISO Abbreviation:  Acta Physiol Pharmacol Ther Latinoam     Publication Date:  1991  
Date Detail:
Created Date:  1992-04-16     Completed Date:  1992-04-16     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9200300     Medline TA:  Acta Physiol Pharmacol Ther Latinoam     Country:  ARGENTINA    
Other Details:
Languages:  eng     Pagination:  253-62     Citation Subset:  IM    
Centro de Estudios de Metabolismo Fosfocálcico, Facultad de Medicina, Universidad Nacional de Rosario, Argentina.
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MeSH Terms
Body Weight
Bone Development
Dietary Proteins / administration & dosage*
Energy Intake*
Femur / physiology*
Rats, Inbred Strains
Reg. No./Substance:
0/Dietary Proteins

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