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Title
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Perinatal growth restriction is not related to higher intestinal distribution and increased serum levels of 5-hydroxytryptamin in piglets
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Author
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Abstract
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| Serotonin [5-hydroxytryptamin (5-HT)] is abundantly present in intestinal enteroendocrine cells and neurons and plays a crucial role in gastrointestinal functions (i.e., motility and mucosal secretion). Increased concentrations of 5-HT and its precursor l-Trp are present in plasma and brain tissues in case of intrauterine growth retardation (IUGR). Therefore, 5-HT might be involved in the impaired gastrointestinal function associated with IUGR. Small-for-gestational-age (SGA) piglets have been widely used as animal model for IUGR. Hence, the density of intestinal 5-HT cells in fetal and neonatal SGA piglets was compared with serotonergic cell density in normal weight (NW) littermates. Furthermore, 5-HT serum concentrations of the neonatal piglets were analyzed. Stereological analysis showed that fetal piglets have higher (P < 0.01) volume densities of 5-HT enteroendocrine cells compared to 3-d-old piglets irrespective of BW. Serum concentrations did not differ in relation to postnatal age (P = 0.637) and BW (P = 0.892). These results contrast with serum and brain 5-HT and l-Trp levels in human and guinea pig SGA individuals and seemingly contest the fact that 5-HT plays an important role in gut impairment in SGA. |
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Language
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English
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Source (journal)
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Journal of animal science. - Champaign, Ill., 1942, currens
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Publication
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Champaign, Ill.
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2012
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ISSN
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0021-8812
[print]
1525-3163
[online]
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Volume/pages
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90
:S:4
(2012)
, p. 305-307
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ISI
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000319673100098
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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