Ibuki M, Fukui K, Kanatani H, Mine Y. Anti-inflammatory effects of mannanase-hydrolyzed copra meal in a porcine model of colitis.
J Vet Med Sci 2014;
76:645-51. [PMID:
24430661 PMCID:
PMC4073332 DOI:
10.1292/jvms.13-0424]
[Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
We evaluated the anti-inflammatory activity of mannanase-hydrolyzed copra meal (MNB),
including β-1,4-mannobiose (67.8%), in a dextran sodium sulfate (DSS)-induced porcine
model of intestinal inflammation. In the DSS-positive control (POS) and MNB treatment
(MCM) groups, DSS was first administered to piglets via intragastric catheter for 5 days,
followed by 5 days administration of saline or MCM. A negative control group (NEG)
received a saline alternative to DSS and MNB. Inflammation was assessed by clinical signs,
morphological and histological measurements, gut permeability and neutrophil infiltration.
Local production of TNF-α and IL-6 were analyzed by ELISA, colonic and ileal inflammatory
gene expressions were assessed by real time RT-PCR, and CD4+CD25+ cell populations were
analyzed by flow cytometry. Crypt elongation and muscle thickness, D-mannitol gut
permeation, colonic expression of the inflammatory mediators TNF-α and IL-6 and
myeloperoxidase activity were significantly lower in the MCM group than in that of POS
group. The mRNA levels of ileal IL-1β, IL-6, IL-17 and TNF-α were significantly lower
following MCM treatment than with POS treatment.MNB exerts anti-inflammatory activity
in vivo, suggesting that MNB is a novel therapeutic that may provide
relief to human and animals suffering from intestinal inflammation.
Collapse