Lipopolysaccharide induces cell death in cultured porcine myenteric neurons.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

Enteric bacteria execute, via lipopolysaccharide (LPS), a pathogenic role in intestinal inflammation. The effects of LPS on survival and neurotransmitter expression in cultured porcine myenteric neurons were investigated. Myenteric neurons were isolated and cultured for 6 days in medium, in LPS (100 ng/ml) with or without α-ketoglutarate or the nitric oxide synthase (NOS) inhibitor L-NAME, in α-ketoglutarate or in the NO donor SNAP. Neuronal survival and expression of vasoactive intestinal peptide (VIP) and NOS were evaluated by immunocytochemistry. Addition of LPS significantly decreased neuronal survival; only 40% survived, compared to controls run in parallel. The LPS-induced neurotoxic effect was not counteracted by the simultaneous presence of α-ketoglutarate or L-NAME. Either SNAP or α-ketoglutarate influenced neuronal survival. Culturing, particularly in the presence of LPS, markedly increased the proportion of VIP-immunoreactive neurons; NOS-immunoreactive neurons were unchanged. The reported LPS-induced neurotoxicity indicates loss of enteric neurons as a consequence of intestinal inflammation.

Detaljer

Författare
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Gastroenterologi

Nyckelord

Originalspråkengelska
Sidor (från-till)1661-1668
TidskriftDigestive Diseases and Sciences
Volym50
Utgivningsnummer9
StatusPublished - 2005
PublikationskategoriForskning
Peer review utfördJa

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