Experimental lung injury induces cerebral cytokine mRNA production in pigs.
Acute respiratory distress syndrome
Cerebral inflammation
Cognitive impairment
Critical care
Cytokines
Lung injury
Pigs
Journal
PeerJ
ISSN: 2167-8359
Titre abrégé: PeerJ
Pays: United States
ID NLM: 101603425
Informations de publication
Date de publication:
2020
2020
Historique:
received:
07
04
2020
accepted:
11
11
2020
entrez:
23
12
2020
pubmed:
24
12
2020
medline:
24
12
2020
Statut:
epublish
Résumé
Acute respiratory distress syndrome (ARDS) is an important disease with a high incidence among patients admitted to intensive care units. Over the last decades, the survival of critically ill patients has improved; however, cognitive deficits are among the long-term sequelae. We hypothesize that acute lung injury leads to upregulation of cerebral cytokine synthesis. After approval of the institutional and animal care committee, 20 male pigs were randomized to one of three groups: (1) Lung injury by oleic acid injection (OAI), (2) ventilation only (CTR) or (3) untreated. We compared neuronal numbers, proportion of neurons with markers for apoptosis, activation state of Iba-1 stained microglia cells and cerebral mRNA levels of different cytokines between the groups 18 hours after onset of lung injury. We found an increase in hippocampal TNFalpha ( Hippocampal cytokine transcription increases within 18 hours after the induction of acute lung injury with histological evidence of neuronal damage. It remains to be elucidated if increased cytokine mRNA synthesis plays a role in the cognitive decline observed in survivors of ARDS.
Sections du résumé
BACKGROUND
BACKGROUND
Acute respiratory distress syndrome (ARDS) is an important disease with a high incidence among patients admitted to intensive care units. Over the last decades, the survival of critically ill patients has improved; however, cognitive deficits are among the long-term sequelae. We hypothesize that acute lung injury leads to upregulation of cerebral cytokine synthesis.
METHODS
METHODS
After approval of the institutional and animal care committee, 20 male pigs were randomized to one of three groups: (1) Lung injury by oleic acid injection (OAI), (2) ventilation only (CTR) or (3) untreated. We compared neuronal numbers, proportion of neurons with markers for apoptosis, activation state of Iba-1 stained microglia cells and cerebral mRNA levels of different cytokines between the groups 18 hours after onset of lung injury.
RESULTS
RESULTS
We found an increase in hippocampal TNFalpha (
CONCLUSION
CONCLUSIONS
Hippocampal cytokine transcription increases within 18 hours after the induction of acute lung injury with histological evidence of neuronal damage. It remains to be elucidated if increased cytokine mRNA synthesis plays a role in the cognitive decline observed in survivors of ARDS.
Identifiants
pubmed: 33354426
doi: 10.7717/peerj.10471
pii: 10471
pmc: PMC7733330
doi:
Types de publication
Journal Article
Langues
eng
Pagination
e10471Informations de copyright
©2020 Kamuf et al.
Déclaration de conflit d'intérêts
The authors declare there are no competing interests.
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