Alterations in proteins of bone marrow extracellular matrix in undernourished mice

The objective of the present study was to determine the effect of protein malnutrition on the glycoprotein content of bone marrow extracellular matrix (ECM). Two-month-old male Swiss mice were submitted to protein malnutrition with a low-protein diet containing 4% casein as compared to 20% casein in the control diet. When the experimental group had attained a 20% loss of their original body weight, we extracted the ECM proteins from bone marrow with PBS buffer, and analyzed ECM samples by SDS-PAGE (7.5%) and ECL Western blotting. Quantitative differences were observed between control and experimental groups. Bone marrow ECM from undernourished mice had greater amounts of extractable fibronectin (1.6-fold increase) and laminin (4.8-fold increase) when compared to the control group. These results suggest an association between fluctuations in the composition of the hematopoietic microenvironment and altered hematopoiesis observed in undernourished mice.

Bibliographic Details

Main Authors:	Vituri,C.L., Alvarez-Silva,M., Trentin,A.G., Borelli,P.
Format:	Digital revista
Language:	English
Published:	Associação Brasileira de Divulgação Científica 2000
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000800004
Tags:	Add Tag No Tags, Be the first to tag this record!