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Non-anticoagulant fractions of enoxaparin suppress inflammatory cytokine release from peripheral blood mononuclear cells of allergic asthmatic individuals


Shastri, MD and Stewart, N and Horne, J and Zaidi, STR and Sohal, SS and Peterson, GM and Korner, H and Gueven, N and Patel, RP, Non-anticoagulant fractions of enoxaparin suppress inflammatory cytokine release from peripheral blood mononuclear cells of allergic asthmatic individuals, PLoS One, 10, (6) Article e0128803. ISSN 1932-6203 (2015) [Refereed Article]


Copyright Statement

2015 Shastri et al. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0)

DOI: doi:10.1371/journal.pone.0128803


Background: Enoxaparin, a low-molecular-weight heparin, is known to possess anti-inflammatory properties. However, its clinical exploitation as an anti-inflammatory agent is hampered by its anticoagulant effect and the associated risk of bleeding.

Objective: The aim of the current study was to examine the ability of non-anticoagulant fractions of enoxaparin to inhibit the release of key inflammatory cytokines in primed peripheral blood mononuclear cells derived from allergic mild asthmatics.

Methods: Peripheral blood mononuclear cells from allergic asthmatics were activated with phytohaemag glutinin (PHA), concanavalin-A (ConA) or phorbol 12-myristate 13-acetate (PMA) in the presence or absence of enoxaparin fractions before cytokine levels were quantified using specific cytokine bead arrays. Together with nuclear magnetic resonance analysis,time-dependent and target-specific effects of enoxaparin fractions were used to elucidate structural determinants for their anti-inflammatory effect and gain mechanistic insights into their anti-inflammatory activity.

Results: Two non-anticoagulant fractions of enoxaparin were identified that significantly inhibited T-cell activation. A disaccharide fraction of enoxaparin inhibited the release of IL-4, IL-5, IL-13 and TNF-α by more than 57% while a tetrasaccharide fraction was found to inhibit the release of tested cytokines by more than 68%. Our data suggest that the observed response is likely to be due to an interaction of 6-O-sulfated tetrasaccharide with cellular receptor(s).

Conclusions and Clinical Relevance: The two identified anti-inflammatory fractions lacked anticoagulant activity and are therefore not associated with risk of bleeding. The findings highlight the potential therapeutic use of enoxaparin-derived fractions, in particular tetrasaccharide, in patients with chronic inflammatory disorders.

Item Details

Item Type:Refereed Article
Keywords:heparin, HPLC, carbohydrates, anticoagulant
Research Division:Biomedical and Clinical Sciences
Research Group:Pharmacology and pharmaceutical sciences
Research Field:Pharmaceutical sciences
Objective Division:Health
Objective Group:Public health (excl. specific population health)
Objective Field:Public health (excl. specific population health) not elsewhere classified
UTAS Author:Shastri, MD (Mr Madhur Shastri)
UTAS Author:Stewart, N (Dr Niall Stewart)
UTAS Author:Horne, J (Dr James Horne)
UTAS Author:Zaidi, STR (Dr Tabish Razi Zaidi)
UTAS Author:Sohal, SS (Dr Sukhwinder Sohal)
UTAS Author:Peterson, GM (Professor Gregory Peterson)
UTAS Author:Korner, H (Professor Heinrich Korner)
UTAS Author:Gueven, N (Dr Nuri Guven)
UTAS Author:Patel, RP (Dr Rahul Patel)
ID Code:101020
Year Published:2015
Web of Science® Times Cited:22
Deposited By:Pharmacy
Deposited On:2015-06-07
Last Modified:2017-11-02
Downloads:377 View Download Statistics

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