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An explorative study of inflammation-related proteins associated with kidney injury in male heat-stressed workers

Hansson, Erik LU ; Broberg, Karin LU orcid ; Wijkström, Julia ; Glaser, Jason ; Gonzalez-Quiroz, Marvin ; Ekström, Ulf LU ; Abrahamson, Magnus LU and Jakobsson, Kristina (2023) In Journal of Thermal Biology 112.
Abstract

Chronic kidney disease of non-traditional origin (CKDnt) and acute kidney injury (AKI) often affect heat-stressed Mesoamerican manual workers. Inflammation occurs concurrently with AKI in this population, but its role remains unknown. To explore links between inflammation and kidney injury in heat stress, we compared levels of inflammation-related proteins in cutters with and without increasing serum creatinine levels during sugarcane harvest. These sugarcane cutters have previously been identified to be repeatedly exposed to severe heat stress during the five month harvest season. A nested case-control study was conducted among male Nicaraguan sugarcane cutters in a CKDnt hotspot. Cases (n = 30) were defined as having an increase in... (More)

Chronic kidney disease of non-traditional origin (CKDnt) and acute kidney injury (AKI) often affect heat-stressed Mesoamerican manual workers. Inflammation occurs concurrently with AKI in this population, but its role remains unknown. To explore links between inflammation and kidney injury in heat stress, we compared levels of inflammation-related proteins in cutters with and without increasing serum creatinine levels during sugarcane harvest. These sugarcane cutters have previously been identified to be repeatedly exposed to severe heat stress during the five month harvest season. A nested case-control study was conducted among male Nicaraguan sugarcane cutters in a CKDnt hotspot. Cases (n = 30) were defined as having an increase in creatinine of ≥0.3 mg/dL across the five-month harvest. Controls (n = 57) had stable creatinine levels. Ninety-two inflammation-related proteins in serum were measured before and after harvest using Proximity Extension Assays. Mixed linear regression was used to identify differences in protein concentrations between cases and controls before harvest, differential trends during harvest, and association between protein concentrations and the urine kidney injury markers Kidney Injury Molecule (KIM)-1, Monocyte Chemoattractant Protein (MCP)-1 and albumin. One protein, chemokine (C–C motif) ligand 23 (CCL23), was elevated among cases at pre-harvest. Changes in seven inflammation-related proteins (CCL19, CCL23, colony-stimulating factor 1 [CSF1], hepatocyte and fibroblast growth factors [HGF and FGF23], and tumor necrosis factor beta [TNFB] and TNF-related activation-induced cytokine [TRANCE]) were associated with case status and at least two out of three urine kidney injury markers (KIM-1, MCP-1 and albumin). Several of these have been implicated in myofibroblast activation, which likely is an important step in kidney interstitial fibrotic disease such as CKDnt. This study provides an initial exploration of immune system determinants of, and activation during, kidney injury experienced during prolonged heat stress.

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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
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in
Journal of Thermal Biology
volume
112
article number
103433
publisher
Elsevier
external identifiers
  • scopus:85146721304
  • pmid:36796890
ISSN
0306-4565
DOI
10.1016/j.jtherbio.2022.103433
language
English
LU publication?
yes
id
ab3f8723-1d53-46fc-b3b2-5b97acddaa99
date added to LUP
2023-02-10 15:29:30
date last changed
2024-06-13 05:03:14
@article{ab3f8723-1d53-46fc-b3b2-5b97acddaa99,
  abstract     = {{<p>Chronic kidney disease of non-traditional origin (CKDnt) and acute kidney injury (AKI) often affect heat-stressed Mesoamerican manual workers. Inflammation occurs concurrently with AKI in this population, but its role remains unknown. To explore links between inflammation and kidney injury in heat stress, we compared levels of inflammation-related proteins in cutters with and without increasing serum creatinine levels during sugarcane harvest. These sugarcane cutters have previously been identified to be repeatedly exposed to severe heat stress during the five month harvest season. A nested case-control study was conducted among male Nicaraguan sugarcane cutters in a CKDnt hotspot. Cases (n = 30) were defined as having an increase in creatinine of ≥0.3 mg/dL across the five-month harvest. Controls (n = 57) had stable creatinine levels. Ninety-two inflammation-related proteins in serum were measured before and after harvest using Proximity Extension Assays. Mixed linear regression was used to identify differences in protein concentrations between cases and controls before harvest, differential trends during harvest, and association between protein concentrations and the urine kidney injury markers Kidney Injury Molecule (KIM)-1, Monocyte Chemoattractant Protein (MCP)-1 and albumin. One protein, chemokine (C–C motif) ligand 23 (CCL23), was elevated among cases at pre-harvest. Changes in seven inflammation-related proteins (CCL19, CCL23, colony-stimulating factor 1 [CSF1], hepatocyte and fibroblast growth factors [HGF and FGF23], and tumor necrosis factor beta [TNFB] and TNF-related activation-induced cytokine [TRANCE]) were associated with case status and at least two out of three urine kidney injury markers (KIM-1, MCP-1 and albumin). Several of these have been implicated in myofibroblast activation, which likely is an important step in kidney interstitial fibrotic disease such as CKDnt. This study provides an initial exploration of immune system determinants of, and activation during, kidney injury experienced during prolonged heat stress.</p>}},
  author       = {{Hansson, Erik and Broberg, Karin and Wijkström, Julia and Glaser, Jason and Gonzalez-Quiroz, Marvin and Ekström, Ulf and Abrahamson, Magnus and Jakobsson, Kristina}},
  issn         = {{0306-4565}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Journal of Thermal Biology}},
  title        = {{An explorative study of inflammation-related proteins associated with kidney injury in male heat-stressed workers}},
  url          = {{http://dx.doi.org/10.1016/j.jtherbio.2022.103433}},
  doi          = {{10.1016/j.jtherbio.2022.103433}},
  volume       = {{112}},
  year         = {{2023}},
}