Increased lymphocytic Na+/H+ exchange activity after hemodialysis
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Increased lymphocytic Na+/H+ exchange activity after hemodialysis : evidence for an endogenous inhibitor of Na+/H+ exchange in patients with end-stage renal failure. / Tepel, M; Klaus, T; Laukemper, S; Schlüter, H; Zidek, W.
in: LIFE SCI, Jahrgang 59, Nr. 18, 1996, S. 1545-52.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Increased lymphocytic Na+/H+ exchange activity after hemodialysis
T2 - evidence for an endogenous inhibitor of Na+/H+ exchange in patients with end-stage renal failure
AU - Tepel, M
AU - Klaus, T
AU - Laukemper, S
AU - Schlüter, H
AU - Zidek, W
PY - 1996
Y1 - 1996
N2 - The Na+/H+ exchange antiport activity was measured in lymphocytes from 16 patients with end-stage renal failure pre- and postdialysis. In addition the effect of the patients' plasma on lymphocytes from healthy subjects was tested. Resting pH (pHi) was not significantly different in lymphocytes pre- and postdialysis. On the other hand, the Na+/H+ exchange activity was significantly lower in lymphocytes before hemodialysis (6.22 +/- 0.73 x 10(-3) pHi/s) than after hemodialysis (9.32 +/- 1.58 x 10(-3) pHi/s; n = 16; p < 0.05). The buffer capacity was not significantly different before and after hemodialysis. The incubation of lymphocytes from healthy control subjects with plasma from patients with end-stage chronic renal failure significantly reduced the lymphocytic Na+/H+ exchange activity. The addition of ultrafiltrate also significantly reduced the Na+/H+ exchange activity in lymphocytes from healthy control subjects. The study indicates the existence of an endogenous inhibitor of the Na+/H+ exchange that is accumulated in plasma from patients with end-stage chronic renal failure.
AB - The Na+/H+ exchange antiport activity was measured in lymphocytes from 16 patients with end-stage renal failure pre- and postdialysis. In addition the effect of the patients' plasma on lymphocytes from healthy subjects was tested. Resting pH (pHi) was not significantly different in lymphocytes pre- and postdialysis. On the other hand, the Na+/H+ exchange activity was significantly lower in lymphocytes before hemodialysis (6.22 +/- 0.73 x 10(-3) pHi/s) than after hemodialysis (9.32 +/- 1.58 x 10(-3) pHi/s; n = 16; p < 0.05). The buffer capacity was not significantly different before and after hemodialysis. The incubation of lymphocytes from healthy control subjects with plasma from patients with end-stage chronic renal failure significantly reduced the lymphocytic Na+/H+ exchange activity. The addition of ultrafiltrate also significantly reduced the Na+/H+ exchange activity in lymphocytes from healthy control subjects. The study indicates the existence of an endogenous inhibitor of the Na+/H+ exchange that is accumulated in plasma from patients with end-stage chronic renal failure.
KW - Adult
KW - Female
KW - Fluoresceins
KW - Fluorescent Dyes
KW - Humans
KW - Hydrogen-Ion Concentration
KW - Kidney Failure, Chronic
KW - Lymphocytes
KW - Male
KW - Renal Replacement Therapy
KW - Sodium-Hydrogen Exchangers
KW - Journal Article
M3 - SCORING: Journal article
C2 - 8890935
VL - 59
SP - 1545
EP - 1552
JO - LIFE SCI
JF - LIFE SCI
SN - 0024-3205
IS - 18
ER -