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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 Am+J+Physiol+Regul+Integr+Comp+Physiol
2016 ; 310
(8
): R697-706
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Increase in cholinergic modulation with pyridostigmine induces anti-inflammatory
cell recruitment soon after acute myocardial infarction in rats
#MMPMID26791829
Rocha JA
; Ribeiro SP
; França CM
; Coelho O
; Alves G
; Lacchini S
; Kallás EG
; Irigoyen MC
; Consolim-Colombo FM
Am J Physiol Regul Integr Comp Physiol
2016[Apr]; 310
(8
): R697-706
PMID26791829
show ga
We tested the hypothesis that an increase in the anti-inflammatory cholinergic
pathway, when induced by pyridostigmine (PY), may modulate subtypes of
lymphocytes (CD4+, CD8+, FOXP3+) and macrophages (M1/M2) soon after myocardial
infarction (MI) in rats. Wistar rats, randomly allocated to receive PY (40
mg·kg(-1)·day(-1)) in drinking water or to stay without treatment, were followed
for 4 days and then were subjected to ligation of the left coronary artery. The
groups-denominated as the pyridostigmine-treated infarcted (IP) and infarcted
control (I) groups-were submitted to euthanasia 3 days after MI; the heart was
removed for immunohistochemistry, and the peripheral blood and spleen were
collected for flow cytometry analysis. Noninfarcted and untreated rats were used
as controls (C Group). Echocardiographic measurements were registered on the
second day after MI, and heart rate variability was measured on the third day
after MI. The infarcted groups had similar MI areas, degrees of systolic
dysfunction, blood pressures, and heart rates. Compared with the I Group, the IP
Group showed a significant higher parasympathetic modulation and a lower
sympathetic modulation, which were associated with a small, but significant,
increase in diastolic function. The IP Group showed a significant increase in M2
macrophages and FOXP3(+)cells in the infarcted and peri-infarcted areas, a
significantly higher frequency of circulating Treg cells (CD4(+)CD25(+)FOXP3(+)),
and a less extreme decrease in conventional T cells (CD25(+)FOXP3(-)) compared
with the I Group. Therefore, increasing cholinergic modulation with PY induces
greater anti-inflammatory cell recruitment soon after MY in rats.