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2016 ; 3
(3
): 220-224
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
TRPM7 is down-regulated in both left atria and left ventricle of ischaemic
cardiomyopathy patients and highly related to changes in ventricular function
#MMPMID27818786
Ortega A
; Roselló-Lletí E
; Tarazón E
; Gil-Cayuela C
; Lago F
; González-Juanatey JR
; Martinez-Dolz L
; Portolés M
; Rivera M
ESC Heart Fail
2016[Sep]; 3
(3
): 220-224
PMID27818786
show ga
AIMS: The kinase ion channel transient receptor potential melastatin 7 (TRPM7) is
considered a modulator of cardiac fibrosis progression; nevertheless, we lack of
studies analysing its role in human ischaemic cardiomyopathy (ICM). Our objective
was to analyse the expression of genes encoding cardiac ion channels in human
ICM, focusing on the alterations in mRNA levels of TRPM7 and its relationship
with changes in the ventricular function. METHODS AND RESULTS: RNA-sequencing was
carried out in 13 left ventricular (LV) samples of patients with ICM compared
with a control group (n?=?10). The analysis revealed a total of 25 ion channel
genes differentially expressed. We performed an RTqPCR analysis of the TRPM7 mRNA
in LV and left atrial samples and found that it was down-regulated in both
cavities (-1.43-fold and -1.52-fold, respectively). Atrial TRPM7 mRNA levels
showed an excellent and inverse relationships with the depressed ejection
fraction (r?=?-0.724, P?=?0.042) and with the mitral A wave (r?=?-0.938,
P?=?0.006). CONCLUSIONS: We report the down-regulation of TRPM7 in tissue samples
from both left atria and left ventricle in patients with ICM. We found an inverse
relationship between both cardiac chambers mRNA levels with LV dysfunction,
suggesting an important role of TRPM7 in the left atrial and LV functional
depression found in this cardiomyopathy.