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2017 ; 12
(9
): e0184449
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
The role of dietary sodium intake on the modulation of T helper 17 cells and
regulatory T cells in patients with rheumatoid arthritis and systemic lupus
erythematosus
#MMPMID28877244
Scrivo R
; Massaro L
; Barbati C
; Vomero M
; Ceccarelli F
; Spinelli FR
; Riccieri V
; Spagnoli A
; Alessandri C
; Desideri G
; Conti F
; Valesini G
PLoS One
2017[]; 12
(9
): e0184449
PMID28877244
show ga
We aimed at investigating whether the frequency and function of T helper 17
(Th17) and regulatory T cells (Treg) are affected by a restriction of dietary
sodium intake in patients with rheumatoid arthritis (RA) and systemic lupus
erythematosus (SLE). We enrolled RA and SLE patients not receiving drugs known to
increase urinary sodium excretion. Patients underwent a dietary regimen starting
with a restricted daily sodium intake followed by a normal-sodium daily intake.
The timepoints were identified at baseline (T0), after 3 weeks of low-sodium
dietary regimen (T3), after 2 weeks of normal-sodium dietary regimen (T5). On
these visits, we measured the 24-hour urinary sodium excretion, the frequency and
function of Th17 and Treg cells in the peripheral blood, the serum levels of
cytokines. Analysis of urinary sodium excretion confirmed adherence to the
dietary regimen. In RA patients, a trend toward a reduction in the frequencies of
Th17 cells over the low-sodium dietary regimen followed by an increase at T5 was
observed, while Treg cells exhibited the opposite trend. SLE patients showed a
progressive reduction in the percentage of Th17 cells that reached a significance
at T5 compared to T0 (p = 0.01) and an increase in the percentage of Treg cells
following the low-sodium dietary regimen at both T1 and T3 compared to T0 (p =
0.04 and p = 0.02, respectively). No significant apoptosis or proliferation
modulation was found. In RA patients, we found a reduction at T5 compared to T0
in serum levels of both TGF? (p = 0.0016) and IL-9 (p = 0.0007); serum IL-9
levels were also reduced in SLE patients at T5 with respect to T0 (p = 0.03).
This is the first study investigating the effects of dietary sodium intake on
adaptive immunity. Based on the results, we hypothesize that a restricted sodium
dietary intake may dampen the inflammatory response in RA and SLE patients.