Article (Scientific journals)
Kidney-targeted irradiation triggers renal ischaemic preconditioning in mice.
Khbouz, Badr; LALLEMAND, François; Cirillo, Arianna et al.
2022In American Journal of Physiology. Renal Physiology
Peer Reviewed verified by ORBi
 

Files


Full Text
ajprenal.00005.2022.pdf
Author postprint (3.91 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
acute kidney injury; angiogenesis; radiotherapy; renal ischemia/reperfusion; renal preconditioning; Physiology; metabolomics; transcriptomics
Abstract :
[en] Renal ischemia/reperfusion (I/R) causes acute kidney injury (AKI). Ischemic preconditioning (IPC) attenuates I/R-associated AKI. Whole-body irradiation induces renal IPC in mice. Still, the mechanisms remain largely unknown. Furthermore, the impact of kidney-centered irradiation on renal resistance against I/R has not been studied. Renal irradiation (8.5Gy) was done in male 8-12-week-old C57bl/6 mice using Small Animal Radiation Therapy (SmART) device. Left renal I/R was performed by clamping the renal pedicles for 30 minutes, with simultaneous right nephrectomy, at 7, 14, and 28 days post-irradiation. The renal reperfusion lasted 48 hours. Following I/R, blood urea nitrogen (BUN) and creatinine (SCr) levels were lower in pre-irradiated mice compared to controls, so was the histological Jablonski score of AKI. The metabolomics signature of renal I/R was attenuated in pre-irradiated mice. The numbers of PCNA-, CD11b-, and F4-80-positive cells in the renal parenchyma post-I/R were reduced in pre-irradiated versus control groups. Such an IPC was significantly observed as early as D14 post-irradiation. RNA-Seq showed an up-regulation of angiogenesis- and stress response-related signaling pathways in irradiated non-ischemic kidneys at D28. RT-qPCR confirmed the increased expression of VEGF, ALK5, HO1, PECAM1, NOX2, HSP70, and HSP27 in irradiated kidneys compared to controls. In addition, irradiated kidneys showed an increased CD31-positive vascular area compared to controls. A 14-day gavage of irradiated mice with the anti-angiogenic drug Sunitinib before I/R abrogated the irradiation-induced IPC at both functional and structural levels. Our observations suggest that kidney-centered irradiation activates pro-angiogenic pathways and induces IPC, with preserved renal function and attenuated inflammation post-I/R.
Disciplines :
Urology & nephrology
Author, co-author :
Khbouz, Badr ;  Université de Liège - ULiège > Département des sciences cliniques > Néphrologie
LALLEMAND, François  ;  Centre Hospitalier Universitaire de Liège - CHU > > Service médical de radiothérapie
Cirillo, Arianna ;  Université de Liège - ULiège > Unités de recherche interfacultaires > Centre Interdisciplinaire de Recherche sur le Médicament (CIRM)
Rowart, Pascal ;  Université de Liège - ULiège > Département des sciences cliniques > Néphrologie ; Department of Pharmacology and Chemical Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
Legouis, David;  Division of Intensive Care, Department of Acute Medicine, Geneva University Hospitals, Geneva, Switzerland ; Laboratory of Nephrology, Department of Medicine and Cell Physiology, University Hospital and University of Geneva, Geneva, Switzerland
Sounni, Nor Eddine  ;  ULiège - University of Liège [BE] > GIGA > GIGA Cancer
Noël, Agnès  ;  Université de Liège - ULiège > GIGA > GIGA Cancer
De Tullio, Pascal  ;  Université de Liège - ULiège > Unités de recherche interfacultaires > Centre Interdisciplinaire de Recherche sur le Médicament (CIRM)
de Seigneux, Sophie;  Laboratory of Nephrology, Department of Medicine and Cell Physiology, University Hospital and University of Geneva, Geneva, Switzerland
JOURET, François  ;  Centre Hospitalier Universitaire de Liège - CHU > > Service de néphrologie
Language :
English
Title :
Kidney-targeted irradiation triggers renal ischaemic preconditioning in mice.
Publication date :
07 July 2022
Journal title :
American Journal of Physiology. Renal Physiology
ISSN :
1931-857X
eISSN :
1522-1466
Publisher :
American Physiological Society, United States
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique
Fonds Léon Fredericq
Available on ORBi :
since 11 August 2022

Statistics


Number of views
261 (36 by ULiège)
Number of downloads
14 (11 by ULiège)

Scopus citations®
 
6
Scopus citations®
without self-citations
3
OpenCitations
 
6
OpenAlex citations
 
6

Bibliography


Similar publications



Contact ORBi