scholarly journals Osmotic diuresis by SGLT2 inhibition stimulates vasopressin‐induced water reabsorption to maintain body fluid volume

2020 ◽  
Vol 8 (2) ◽  
Author(s):  
Takahiro Masuda ◽  
Shigeaki Muto ◽  
Keiko Fukuda ◽  
Minami Watanabe ◽  
Ken Ohara ◽  
...  

2018 ◽  
Vol 315 (3) ◽  
pp. F653-F664 ◽  
Author(s):  
Takahiro Masuda ◽  
Yuko Watanabe ◽  
Keiko Fukuda ◽  
Minami Watanabe ◽  
Akira Onishi ◽  
...  

The chronic intrinsic diuretic and natriuretic tone of sodium-glucose cotransporter 2 (SGLT2) inhibitors is incompletely understood because their effect on body fluid volume (BFV) has not been fully evaluated and because they often increase food and fluid intake at the same time. Here we first compared the effect of the SGLT2 inhibitor ipragliflozin (Ipra, 0.01% in diet for 8 wk) and vehicle (Veh) in Spontaneously Diabetic Torii rat, a nonobese type 2 diabetic model, and nondiabetic Sprague-Dawley rats. In nondiabetic rats, Ipra increased urinary excretion of Na+ (UNaV) and fluid (UV) associated with increased food and fluid intake. Diabetes increased these four parameters, but Ipra had no further effect, probably because of its antihyperglycemic effect, such that glucosuria and, as a consequence, food and fluid intake were unchanged. Fluid balance and BFV, determined by bioimpedance spectroscopy, were similar among the four groups. To study the impact of food and fluid intake, nondiabetic rats were treated for 7 days with Veh, Ipra, or Ipra+pair feeding+pair drinking (Pair-Ipra). Pair-Ipra maintained a small increase in UV and UNaV versus Veh despite similar food and fluid intake. Pair-Ipra induced a negative fluid balance and decreased BFV, whereas Ipra or Veh had no significant effect compared with basal values. In conclusion, SGLT2 inhibition induces a sustained diuretic and natriuretic tone. Homeostatic mechanisms are activated to stabilize BFV, including compensatory increases in fluid and food intake.



1988 ◽  
Vol 13 ◽  
pp. S62-S68
Author(s):  
Yasunobu Hirata ◽  
Masao Ishii ◽  
Kazushige Fukui ◽  
Hiroshi Hayakawa ◽  
Shin-ichiro Namba ◽  
...  




1990 ◽  
Vol 258 (4) ◽  
pp. R1084-R1088 ◽  
Author(s):  
M. C. Kollenda ◽  
A. M. Vollmar ◽  
G. A. McEnroe ◽  
A. L. Gerbes

The present study determined the presence of two types of binding sites for atrial natriuretic factor (ANF), the B and C receptor, on rat glomerular membranes. The effect of short-term salt loading and dehydration on these two receptor populations was investigated consecutively. Salt-loaded rats did not show significant changes in plasma ANF concentrations or in the number of ANF binding sites. Water-deprived rats presented significantly lower plasma ANF concentrations (22.0 +/- 1.9 vs. 34.4 +/- 3.8 fmol/ml, P less than 0.01) and an increase in total receptor density (1,860 +/- 398 vs. 987 +/- 143 fmol/mg protein) as compared with the control group. Differentiation of both receptor populations showed that it was the C receptors that accounted for this increase (1,772 +/- 369 vs. 901 +/- 151 fmol/mg protein, P less than 0.05), whereas B-receptor density was unchanged (89 +/- 31 vs. 87 +/- 44 fmol/mg protein). These data suggest that C receptors for ANF are affected by changes of body fluid volume.



1977 ◽  
Vol 267 (2) ◽  
pp. 321-338 ◽  
Author(s):  
J R Blair-West ◽  
A H Brook ◽  
P A Simpson


2003 ◽  
Vol 10 (3) ◽  
pp. 211-218 ◽  
Author(s):  
Prabal K. Guha ◽  
Daniel Villarreal ◽  
Garry P. Reams ◽  
Ronald H. Freeman


Peptides ◽  
2005 ◽  
Vol 26 (12) ◽  
pp. 2452-2457 ◽  
Author(s):  
Ryousuke Satou ◽  
Tsutomu Nakagawa ◽  
Hiroki Ido ◽  
Masayuki Tomomatsu ◽  
Fumiaki Suzuki ◽  
...  


1995 ◽  
Vol 25 (2) ◽  
pp. 178A ◽  
Author(s):  
Maurizio D. Guazzi ◽  
Piergiuseppe Agostoni ◽  
G. Battista Perego ◽  
Gianfranco Lauri ◽  
Francesco Giraldi ◽  
...  


1966 ◽  
Vol 4 (6) ◽  
pp. 567-574 ◽  
Author(s):  
M. Nagasaka ◽  
K. Shimizu ◽  
T. Maeda ◽  
Y. Yoshitoshi ◽  
S. Koshikawa ◽  
...  


1994 ◽  
Vol 1 ◽  
pp. 28
Author(s):  
H. Nose ◽  
M. Chen ◽  
A. Takamata ◽  
T. Morimoto


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