MOST IMPORTANT CELLULAR CHANGES INVOLVED IN RENAL ISCHEMIA REPERFUSION INJURY AND THE CONSEQUENT IMPACT ON SELECTED REMOTE ORGANS
Because of the high rate of baseline oxygen use by renal cells, kidney is highly influenced by obstruction of arterial blood inflow and subsequent shortage of the received oxygen, this condition is known as Ischemic injury. There are many clinical settings associated with unavoidable ischemic state such as kidney transplantation, partial nephrectomy or suprarenal procedures of the aorta. During ischemia many cellular changes occur including vascular congestion and adhesion of inflammatory cells to the endothelium with subsequent infiltration into the kidney tissue. Following ischemia, a phase known as Reperfusion begins and
involves a return of blood and oxygen supply to micro vessels. Reperfusion was expected to restore the damage occurred during the ischemic phase, paradoxically, reperfusion leads to more congestion, red cells trapping and excessive generation of reactive oxygen species (ROS), which can oxidatively modify significantly every type of biomolecule, thereby inducing cell dysfunction and induce reperfusion injury. Ischemia reperfusion injury (IRI) is also related to a phenomenon called Remote Organ Injury (ROI) in which the damaging effect induced by I/R is not only restricted to the tissue that undergoing the initial ischemia but also
it leads to injury to remote organs such as the liver, lung, gut. ROI usually occurs by the same mechanisms seen in the local injury induced by I/R including the generation of ROS, leukocytes, and inflammatory mediators (e.g; TNF-α). These substances are directly released from the primary injured tissue or indirectly from activated leukocytes or other inflammatory cells causing organ dysfunctions in distant organs.
Peer Review History:
Received 3 March 2018; Revised 8 March; Accepted 11 March, Available online 15 March 2018
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Average Peer review marks at initial stage: 5.5/10
Average Peer review marks at publication stage: 8.5/10
Name: Dr. Francis Adou Yapo
Affiliation: Felix Houphouet Boigny, University of Abidjan, Ivory Coast
Comments of reviewer(s):