Publications by authors named "R M Breyer"

Article Synopsis
  • The study aims to understand the role of the PGE2 receptor EP4 in vascular intimal hyperplasia (IH), noting its differing effects in vascular smooth muscle cells (VSMCs) and endothelial cells.
  • Researchers generated EP4 reporter mice and found that EP4 expression peaks in VSMCs two weeks post-femoral artery injury, affecting IH's progression based on EP4 levels in these cells.
  • The downstream effects of EP4 signaling in VSMCs were explored, revealing that EP4 promotes VSMC proliferation and migration through fibulin-1 and its interaction with ECM1, suggesting that targeting this signaling pathway could be a potential therapeutic approach to manage IH.
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Background: Group 2 innate lymphoid cells (ILC2s) play a critical role in asthma pathogenesis. Non-steroidal anti-inflammatory drug (NSAID)-exacerbated respiratory disease (NERD) is associated with reduced signaling via EP2, a receptor for prostaglandin E (PGE ). However, the respective roles for the PGE receptors EP2 and EP4 (both share same downstream signaling) in the regulation of lung ILC2 responses has yet been deciphered.

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The purpose of this work was to evaluate the level of antimicrobial resistant Escherichia coli isolates in freshwaters and hospital effluents in Belgium. The samples were collected from 24 locations along the Ourthe, Vesdre, Amblève and Meuse rivers and in the wastewater effluents of several hospitals. The sampling stations in rivers were classified according to the dominant land covers of the rivers (rural, urban and forest areas).

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Objective: Type 2 diabetes is characterized by hyperglycemia and inflammation. Prostaglandin E, which signals through four G protein-coupled receptors (EP1-4), is a mediator of inflammation and is upregulated in diabetes. We have shown previously that EP3 receptor blockade promotes β-cell proliferation and survival in isolated mouse and human islets ex vivo.

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Gulf War I veterans who were victims of depleted uranium (DU) "friendly-fire" incidents have undergone longitudinal health surveillance since 1994. During the spring of 2019, 36 members of the cohort were evaluated with a monitoring protocol including exposure assessment for total and isotopic uranium concentrations in urine and a comprehensive review of health outcomes, including measures of bone metabolism and bone mineral density (BMD) determination. Elevated urine U concentrations were observed in cohort members with retained depleted uranium (DU) shrapnel fragments.

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