Archive for category: Dissemination

Congratulations to NEPHSTROM partners at the Centre for Public Health, Queen’s University Belfast, the University Hospitals Birmingham, and the National University of Ireland Galway for their recent review: The impact of chronic kidney disease on developed countries from a health economics perspective: A systematic scoping review published in PLoS ONE.

Sarah Elshahat, Paul Cockwell, Alexander P. Maxwell, Matthew Griffin, Timothy O’Brien, and Ciaran O’Neill are the authors of the study which appears in the March 24, 2020 edition of the open-access journal; PLoS ONE 15(3): e0230512. https://doi.org/10.1371/journal.pone.0230512

Congratulations to the team of researchers Tomás Patrick Griffin, Md Nahidul Islam, Deirdre Wall, John Ferguson, Damian Gerard Griffin, Matthew Dallas Griffin and Paula M. O’Shea who published a NEPHSTROM-acknowledged study in Scientific Reports.  The open-access paper titled “Plasma dephosphorylated-uncarboxylated Matrix Gla-Protein (dp-ucMGP): reference intervals in Caucasian adults and diabetic kidney disease biomarker potential” can be found in the 5th of December 2019 edition with doi  https://doi.org/10.1038/s41598-019-54762-2. Alternatively, download the pdf here.

“Recent studies suggest a possible association between dephosphorylated-uncarboxylated MGP (dp-ucMGP) and glomerular filtration rate (GFR). This study aimed to establish normative data in an adult Caucasian population and to explore the potential utility of dp-ucMGP in patients with diabetes mellitus (DM) with and without diabetic kidney disease (DKD).”

“Human mesenchymal stromal cells broadly modulate high glucose-induced inflammatory responses of renal proximal tubular cell monolayers” authored by Md Nahidul Islam, Tomás P. Griffin, Elizabeth Sander, Stephanie Rocks, Junaid Qazi, Joana Cabral, Jasmin McCaul, Tara McMorrow and Matthew D. Griffin at NUI Galway was published today, the 19th of November 2019. The open-access paper appears in Stem Cell Research & Therapy (2019) 10:329, DOI: 10.1186/s13287-019-1424-5 You can download the pdf here.

Abstract:

Background

Renal proximal tubular epithelial cells (RPTEC) are dysfunctional in diabetic kidney disease (DKD). Mesenchymal stromal cells (MSC) may modulate DKD pathogenesis through anti-inflammatory mediators. This study aimed to investigate the pro-inflammatory effect of extended exposure to high glucose (HG) concentration on stable RPTEC monolayers and the influence of MSC on this response.

Methods

Morphologically stable human RPTEC/TERT1 cell monolayers were exposed to 5 mM and 30 mM (HG) D-glucose or to 5 mM D-glucose + 25 mM D-mannitol (MAN) for 5 days with sequential immunoassays of supernatants and end-point transcriptomic analysis by RNA sequencing. Under the same conditions, MSC-conditioned media (MSC-CM) or MSC-containing transwells were added for days 4–5. Effects of CM from HG- and MAN-exposed RPTEC/MSC co-cultures on cytokine secretion by monocyte-derived macrophages were determined.

Results

After 72–80 h, HG resulted in increased RPTEC/TERT1 release of interleukin (IL)-6, IL-8, monocyte chemoattractant protein (MCP)-1 and neutrophil gelatinase-associated lipocalin (NGAL). The HG pro-inflammatory effect was attenuated by concentrated (10×) MSC-CM and, to a greater extent, by MSC transwell co-culture. Bioinformatics analysis of RNA sequencing data confirmed a predominant effect of HG on inflammation-related mediators and biological processes/KEGG pathways in RPTEC/TERT1 stable monolayers as well as the non-contact-dependent anti-inflammatory effect of MSC. Finally, CM from HG-exposed RPTEC/MSC transwell co-cultures was associated with attenuated secretion of inflammatory mediators by macrophages compared to CM from HG-stimulated RPTEC alone.

Conclusions

Stable RPTEC monolayers demonstrate delayed pro-inflammatory response to HG that is attenuated by close proximity to human MSC. In DKD, this MSC effect has the potential to modulate hyperglycemia-associated RPTEC/macrophage cross-talk.