Abstract:
:The aim of this study was to ascertain whether the supplementation of polyamines present in breast milk, i.e. spermine (SPM) and spermidine (SPD), influenced the post-natal maturation of the systemic and intestinal immune system in rats. From birth, pups daily received SPM or SPD. At 5, 11 and 18 days old, small intestine intraepithelial lymphocytes (IEL), lamina propria lymphocytes (LPL) and splenocytes were phenotypically characterized. SPM and, less evidently, SPD accelerated the maturation of CD8+ IEL, and enhanced the presence of intraepithelial NK cells and IEL related with specific immune responses on the proximal and distal small intestine, respectively. Polyamines increased the percentage of more mature CD4+ LPL and enhanced the early presence of splenic B cells and, later, that of NK cells. However, no effect on Ig-secretory function was detected. These results suggest that breast milk polyamines improve the maturation of the rat intestinal and systemic immune system.
journal_name
Dev Comp Immunoljournal_title
Developmental and comparative immunologyauthors
Pérez-Cano FJ,González-Castro A,Castellote C,Franch A,Castell Mdoi
10.1016/j.dci.2009.10.001subject
Has Abstractpub_date
2010-02-01 00:00:00pages
210-8issue
2eissn
0145-305Xissn
1879-0089pii
S0145-305X(09)00215-8journal_volume
34pub_type
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