User profiles for H. M. Marriott

Helen M Marriott

Lecturer in Respiratory Infection, University of Sheffield
Verified email at sheffield.ac.uk
Cited by 5195

Pneumolysin: a double-edged sword during the host-pathogen interaction

HM Marriott, TJ Mitchell… - Current molecular …, 2008 - ingentaconnect.com
The cholesterol-dependent cytolysins are pore-forming toxins. Pneumolysin is the cytolysin
produced by Streptococcus pneumoniae and is a key virulence factor. The protein contains …

Alveolar macrophages in pulmonary host defence–the unrecognized role of apoptosis as a mechanism of intracellular bacterial killing

…, J Cole, MA Bewley, HM Marriott… - Clinical & …, 2013 - academic.oup.com
Alveolar macrophages play an essential role in clearing bacteria from the lower airway, as
the resident phagocyte alveolar macrophages must both phagocytose and kill bacteria, and if …

[HTML][HTML] The identification of markers of macrophage differentiation in PMA-stimulated THP-1 cells and monocyte-derived macrophages

M Daigneault, JA Preston, HM Marriott, MKB Whyte… - PloS one, 2010 - journals.plos.org
Differentiated macrophages are the resident tissue phagocytes and sentinel cells of the
innate immune response. The phenotype of mature tissue macrophages represents the …

The role of the macrophage in lung disease mediated by bacteria

HM Marriott, DH Dockrell - Experimental lung research, 2007 - Taylor & Francis
… Macrophage apoptosis and alterations in Mcl-1 can be observed for a variety of other
pathogens, including Haemophilus influenzae and Escherichia coli (Marriott and Dockrell …

Alveolar macrophage apoptosis contributes to pneumococcal clearance in a resolving model of pulmonary infection

DH Dockrell, HM Marriott, LR Prince… - The Journal of …, 2003 - journals.aai.org
The role of alveolar macrophages (AM) in host defense against pulmonary infection has
been difficult to establish using in vivo models. This may reflect a reliance on models of …

[HTML][HTML] Prolyl hydroxylase 3 (PHD3) is essential for hypoxic regulation of neutrophilic inflammation in humans and mice

…, K Vaughan, HM Marriott… - The Journal of …, 2011 - Am Soc Clin Investig
The regulation of neutrophil lifespan by induction of apoptosis is critical for maintaining an
effective host response and preventing excessive inflammation. The hypoxia-inducible factor (…

TNF-related apoptosis-inducing ligand (TRAIL) regulates inflammatory neutrophil apoptosis and enhances resolution of inflammation

EE McGrath, HM Marriott, A Lawrie… - Journal of leukocyte …, 2011 - academic.oup.com
Novel therapeutics targeting neutrophilic inflammation are a major unmet clinical need in
acute and chronic inflammation. The timely induction of neutrophil apoptosis is critical for …

Hypoxia-inducible factor 2α regulates key neutrophil functions in humans, mice, and zebrafish

AAR Thompson, PM Elks, HM Marriott… - Blood, The Journal …, 2014 - ashpublications.org
Neutrophil lifespan and function are regulated by hypoxia via components of the hypoxia
inducible factor (HIF)/von Hippel Lindau/hydroxylase pathway, including specific roles for HIF-…

Inhibition of neutrophil apoptosis by ATP is mediated by the P2Y11 receptor

…, L Stokes, LR Prince, HM Marriott… - The Journal of …, 2007 - journals.aai.org
Neutrophils undergo rapid constitutive apoptosis that is delayed by a range of pathogen-and
host-derived inflammatory mediators. We have investigated the ability of the nucleotide ATP…

Nitric oxide levels regulate macrophage commitment to apoptosis or necrosis during pneumococcal infection

HM Marriott, F Ali, RC Read, TJ Mitchell… - The FASEB …, 2004 - Wiley Online Library
Macrophages are resistant to constitutive apoptosis, but infectious stimuli can induce either
microbial or host‐mediated macrophage apoptosis. Phagocytosis and killing of opsonized …