info:eu-repo/semantics/article
Galactomannan as a potential modulator of intestinal ischemia–reperfusion injury
Fecha
2020-05-01Registro en:
Stringa, Pablo; Toledano, Victor; Papa Gobbi, Rodrigo; Arreola, Miguel; Largo, Carlota; et al.; Galactomannan as a potential modulator of intestinal ischemia–reperfusion injury; Academic Press Inc Elsevier Science; Journal Of Surgical Research; 249; 01-5-2020; 232-240
0022-4804
1095-8673
CONICET Digital
CONICET
Autor
Stringa, Pablo
Toledano, Victor
Papa Gobbi, Rodrigo
Arreola, Miguel
Largo, Carlota
Machuca, Mariana
Aguirre, Luis A.
Rumbo, Martín
López Collazo, Eduardo
Hernández Oliveros, Francisco
Resumen
Background: Galactomannan (GAL), a polysaccharide present on the cell wall of several fungi, has shown an ability to modulate inflammatory responses through the dectin-1 receptor in human macrophages. However, studies evaluating the modulatory properties of this polysaccharide in in vivo inflammatory scenarios are scarce. We hypothesized that GAL pretreatment would modulate local and remote damage related to intestinal reperfusion after an ischemic insult. Materials and methods: Adult male Balb/c mice were subjected to intestinal ischemia–reperfusion injury by reversible occlusion of the superior mesenteric artery, consisting of 45 min of ischemia followed by 3 or 24 h of reperfusion. Intragastric GAL (70 mg/kg) was administered 12 h before ischemia, and saline solution was used in the control animals. Jejunum, lung, and blood samples were taken for the analysis of histology, gene expression, plasma cytokine levels, and nitrosative stress. Results: Intestinal and lung histologic alterations were attenuated by GAL pretreatment, showing significant differences compared with nontreated animals. Interleukin 1β, monocyte chemoattractant protein 1, and IL-6 messenger RNA expression were considerably downregulated in the small intestine of the GAL group. In addition, GAL treatment significantly prevented plasma interleukin 6 and monocyte chemoattractant protein 1 upregulation and diminished nitrate and nitrite levels after 3 h of intestinal reperfusion. Conclusions: GAL pretreatment constitutes a novel and promising therapy to reduce local and remote damage triggered by intestinal ischemia–reperfusion injury. Further in vivo and in vitro studies to understand GAL's modulatory effects are warranted.