Effects of diadenosine polyphosphates on renal function and blood pressure in anesthetized Wistar rats
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Effects of diadenosine polyphosphates on renal function and blood pressure in anesthetized Wistar rats. / Hohage, H; Reinhardt, C; Borucki, U; Enck, G; Schlüter, H; Schlatter, E; Zidek, W.
in: J AM SOC NEPHROL, Jahrgang 7, Nr. 8, 08.1996, S. 1216-22.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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T1 - Effects of diadenosine polyphosphates on renal function and blood pressure in anesthetized Wistar rats
AU - Hohage, H
AU - Reinhardt, C
AU - Borucki, U
AU - Enck, G
AU - Schlüter, H
AU - Schlatter, E
AU - Zidek, W
PY - 1996/8
Y1 - 1996/8
N2 - In this study, the effects of diadenosine polyphosphates on kidney function were examined. Intravenous application of diadenosine hexaphosphate (AP6A) led to a significant threefold increase in both urine flow (from 2.45 +/- 0.2 to 13.8 +/- 0.74 microL/min per 100 g body wt (P < 0.05)) and Na+ excretion (from 0.41 +/- 0.12 to 1.52 +/- 0.28 mumol/min per 100 g body wt at a dose of 1.0 mg/kg body wt). In contrast, diadenosine triphosphate dose-dependently reduced urine flow (from 3.74 +/- 0.3 to 2.57 +/- 0.1 microL/min per 100 g body wt (P < 0.05)) and Na+ excretion (from 0.45 +/- 0.1 to 0.13 +/- 0.1 mumol/min per 100 g body wt at a dose of 1.0 mg/kg body wt). ATP and the P2y purinoceptor agonist gamma-S-ATP did not significantly modulate urine flow and Na+ excretion. alpha, beta-methylene-ATP, a P2x purinoceptor agonist, significantly increased urine flow from 1.74 +/- 0.5 to 4.07 +/- 1.51 microL/min per 100 g body wt, whereas Na+ excretion was unaffected. The effects were independent of alterations in GFR. Pretreatment with indomethacin (2.0 mg/kg body wt iv) completely abolished the effects of AP6A on urine flow and Na+ excretion. Similarly, pretreatment with the endothelin antagonist bosentan abolished the effects of AP6A on both urine flow and Na+ excretion, whereas suramin had no effects on the AP6A-induced increase in urine flow. In conclusion, diadenosine polyphosphates exert specific actions on urine flow and Na+ excretion that are different from the effects of ATP. AP6A may partially influence renal function by stimulating prostaglandin and endothelin release.
AB - In this study, the effects of diadenosine polyphosphates on kidney function were examined. Intravenous application of diadenosine hexaphosphate (AP6A) led to a significant threefold increase in both urine flow (from 2.45 +/- 0.2 to 13.8 +/- 0.74 microL/min per 100 g body wt (P < 0.05)) and Na+ excretion (from 0.41 +/- 0.12 to 1.52 +/- 0.28 mumol/min per 100 g body wt at a dose of 1.0 mg/kg body wt). In contrast, diadenosine triphosphate dose-dependently reduced urine flow (from 3.74 +/- 0.3 to 2.57 +/- 0.1 microL/min per 100 g body wt (P < 0.05)) and Na+ excretion (from 0.45 +/- 0.1 to 0.13 +/- 0.1 mumol/min per 100 g body wt at a dose of 1.0 mg/kg body wt). ATP and the P2y purinoceptor agonist gamma-S-ATP did not significantly modulate urine flow and Na+ excretion. alpha, beta-methylene-ATP, a P2x purinoceptor agonist, significantly increased urine flow from 1.74 +/- 0.5 to 4.07 +/- 1.51 microL/min per 100 g body wt, whereas Na+ excretion was unaffected. The effects were independent of alterations in GFR. Pretreatment with indomethacin (2.0 mg/kg body wt iv) completely abolished the effects of AP6A on urine flow and Na+ excretion. Similarly, pretreatment with the endothelin antagonist bosentan abolished the effects of AP6A on both urine flow and Na+ excretion, whereas suramin had no effects on the AP6A-induced increase in urine flow. In conclusion, diadenosine polyphosphates exert specific actions on urine flow and Na+ excretion that are different from the effects of ATP. AP6A may partially influence renal function by stimulating prostaglandin and endothelin release.
KW - Anesthesia
KW - Animals
KW - Blood Pressure
KW - Bosentan
KW - Cyclooxygenase Inhibitors
KW - Dinucleoside Phosphates
KW - Diuresis
KW - Endothelins
KW - Enzyme Inhibitors
KW - Glomerular Filtration Rate
KW - Indomethacin
KW - Kidney
KW - Male
KW - NG-Nitroarginine Methyl Ester
KW - Natriuresis
KW - Nitric Oxide Synthase
KW - Prostaglandins
KW - Rats
KW - Rats, Wistar
KW - Sulfonamides
KW - Vasoconstrictor Agents
KW - Comparative Study
KW - Journal Article
KW - Research Support, Non-U.S. Gov't
M3 - SCORING: Journal article
C2 - 8866415
VL - 7
SP - 1216
EP - 1222
JO - J AM SOC NEPHROL
JF - J AM SOC NEPHROL
SN - 1046-6673
IS - 8
ER -