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Renal function and glomerular hemodynamics in male endotoxemic rats.

Abstract：

:The renal effects of a single intravenous dose of two different E. coli lipopolysaccharides (LPS 0111:B4 and LPS 0127:B8), at the same dose of 100 micrograms/kg, were evaluated in euvolemic Munich-Wistar (MW) rats by whole kidney clearance techniques and micropuncture studies. Following LPS infusion, a significant decrease (8%) in mean BP was observed only in the LPS 0127:B8 treated group. Inulin clearance fell 57% (LPS 0111:B4), P less than 0.01, and 38% (LPS 0127:B8), P less than 0.01. Para-aminohippuric (PAH) clearance decreased 31% (P less than 0.01) and total effective renal vascular resistance rose 70% (P less than 0.03) in response to LPS 0111:B4. No significant change in PAH clearance was noted in the LPS 0127:B8 group. Superficial single nephron glomerular filtration rate (SNGFR) was reduced 69% (LPS 0111:B4), P less than 0.03, and 33% (LPS 0127:B8), P less than 0.02. Superficial glomerular plasma flow fell 48% (LPS 0111:B4), P less than 0.03, and 24% (LPS 0127:B8), P less than 0.03. Both lipopolysaccharides were associated with an increase in afferent arteriolar resistance (RA) which accounted for a reduction in the glomerular capillary hydraulic pressure (PGC). There was no change in the proximal tubular pressure in either group and, therefore, the net transcapillary hydraulic pressures were reduced. No measurable change in the ultrafiltration coefficient. Kf, was observed in either group. In a second set of protocols, the effect of prior administration of indomethacin or captopril on LPS 0111:B4 action was investigated. A significant decrease in BP occurred when animals were pretreated with captopril. Both indomethacin and captopril prevented the renal effects of LPS 0111:B4.(ABSTRACT TRUNCATED AT 250 WORDS)

journal_name

Kidney Int

journal_title

Kidney international

authors

Lugon JR,Boim MA,Ramos OL,Ajzen H,Schor N

doi

10.1038/ki.1989.232

subject

Has Abstract

pub_date

1989-10-01 00:00:00

pages

570-5

issue

4

eissn

0085-2538

issn

1523-1755

pii

S0085-2538(15)34673-1

journal_volume

36

pub_type

杂志文章

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