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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Physiol
2014 ; 592
(18
): 3969-83
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Cardiorenal syndrome: acute kidney injury secondary to cardiovascular disease and
role of protein-bound uraemic toxins
#MMPMID24907309
Lekawanvijit S
; Krum H
J Physiol
2014[Sep]; 592
(18
): 3969-83
PMID24907309
show ga
Cardiovascular disease (CVD) and kidney disease are closely interrelated. Disease
of one organ can induce dysfunction of the other, ultimately leading to failure
of both. Clinical awareness of synergistic adverse clinical outcomes in patients
with coexisting CVD and kidney disease or 'cardiorenal syndrome (CRS)' has
existed. Renal dysfunction, even mild, is a strong independent predictor for poor
prognosis in CVD patients. Developing therapeutic interventions targeting acute
kidney injury (AKI) has been limited due mainly to lack of effective tools to
accurately detect AKI in a timely manner. Neutrophil gelatinase-associated
lipocalin and kidney injury molecule-1 have been recently demonstrated to be
potential candidate biomarkers in patients undergoing cardiac surgery. However,
further validation of AKI biomarkers is needed in other CVD settings, especially
acute decompensated heart failure and acute myocardial infarction where AKI
commonly occurs. The other concern with regard to understanding the pathogenesis
of renal complications in CVD is that mechanistically oriented studies have been
relatively rare. Pre-clininal studies have shown that activation of renal
inflammation-fibrosis processes, probably triggered by haemodynamic derangement,
underlies CVD-associated renal dysfunction. On the other hand, it is postulated
that there still are missing links in the heart-kidney connection in CRS patients
who have significant renal dysfunction. At present, non-dialysable protein-bound
uraemic toxins (PBUTs) appear to be the main focus in this regard. Evidence of
the causal role of PBUTs in CRS has been increasingly demonstrated, mainly
focusing on indoxyl sulfate (IS) and p-cresyl sulfate (pCS). Both IS and pCS are
derived from colonic microbiotic metabolism of dietary amino acids, and hence the
colon has become a target of treatment in addition to efforts to improve dialysis
techniques for better removal of PBUTs. Novel therapy targeting the site of toxin
production has led to new prospects in early intervention for predialysis
patients with chronic kidney disease.