Lithothamnion muelleri Controls Inflammatory Responses, Target Organ Injury and Lethality Associated with Graft-versus-Host Disease in Mice

Autor: Rosa Maria Esteves Arantes, Priscila T. T. Bernardes, Bárbara M. Rezende, Vanessa Pinho, Mauro M. Teixeira, Danielle G. Souza, Carolina B. Resende, Marina G. M. Castor, Fernão Castro Braga
Jazyk: angličtina
Rok vydání: 2013
Předmět:
Zdroj: Marine Drugs
Marine Drugs, Vol 11, Iss 7, Pp 2595-2615 (2013)
Marine Drugs; Vol 11
Marine Drugs; Volume 11; Issue 7; Pages: 2595-2615
ISSN: 1660-3397
Popis: Lithothamnion muelleri (Hapalidiaceae) is a marine red alga, which is a member of a group of algae with anti-inflammatory, antitumor, and immunomodulatory properties. The present study evaluated the effects of treatment with Lithothamnion muelleri extract (LM) in a model of acute graft-versus-host disease (GVHD), using a model of adoptive splenocyte transfer from C57BL/6 donors into B6D2F1 recipient mice. Mice treated with LM showed reduced clinical signs of disease and mortality when compared with untreated mice. LM-treated mice had reduced tissue injury, less bacterial translocation, and decreased levels of proinflammatory cytokines and chemokines (interferon-γ (IFN-γ), tumor necrosis factor-α (TNF-α), chemokine (C-C motif) ligand 2 (CCL2), chemokine (C-C motif) ligand 3 (CCL3) and chemokine (C-C motif) ligand 5 (CCL5)). The polysaccharide-rich fraction derived from LM could inhibit leukocyte rolling and adhesion in intestinal venules, as assessed by intravital microscopy. LM treatment did not impair the beneficial effects of graft-versus-leukaemia (GVL). Altogether, our studies suggest that treatment with Lithothamnion muelleri has a potential therapeutic application in GVHD treatment.
Databáze: OpenAIRE