Evidence map›Paper›PMID 18684888›Full record

ArticleAmerican journal of physiology. Renal physiology2008

cGMP decreases surface NKCC2 levels in the thick ascending limb: role of phosphodiesterase 2 (PDE2).

Gustavo R Ares, Paulo Caceres, Francisco J Alvarez-Leefmans, Pablo A Ortiz

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Renal physiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
1.1field-weighted citation impact, top 24% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

35 citing papers in PubMed, 55 citations in OpenAlex.

  1. The non-steroidal mineralocorticoid receptor blocker esaxerenone reduces glomerular hyperfiltration and albuminuria.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2026
    Article
  2. Article
  3. Article
  4. Actin cytoskeleton and associated myosin motors within the renal epithelium.American journal of physiology. Renal physiology · 2024
    Review
  5. Review
  6. Review
  7. Review
  8. Article
  9. Article
  10. Molecular characteristics and physiological roles of NaJournal of cellular physiology · 2021
    Review
  11. Molecular regulation of NKCC2 in blood pressure control and hypertension.Current opinion in nephrology and hypertension · 2019
    Review
  12. Superoxide increases surface NKCC2 in the rat thick ascending limbs via PKC.American journal of physiology. Renal physiology · 2019
    Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Review
  18. Article
  19. ANP-induced signaling cascade and its implications in renal pathophysiology.American journal of physiology. Renal physiology · 2015
    Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Gustavo R AresHypertension and Vascular Research Division, Department of Internal Medicine, Henry Ford Hospital, and Department of Physiology, Wayne State University, 2799 West Grand Blvd., Detroit, MI 48202, USA.
Paulo Caceres
Francisco J Alvarez-Leefmans
Pablo A Ortiz
Wayne State University · USWright State University · US

Funding

Cell Volume Regulation in Neurons and GliaR01NS029227 · NINDS · WRIGHT STATE UNIVERSITY · PI ALVAREZ-LEEFMANS, FRANCISCO J · 1991 to 2006
$1.5M
Salt Absorption by the THAL: Role of NKCC2 traffickingR01HL080409 · NHLBI · HENRY FORD HEALTH SYSTEM · PI ORTIZ, PABLO A. · 2006 to 2010
$1.3M
NHLBI NIH HHS R0-1 HL-080409NINDS NIH HHS NS29227
6 · The paper itself

Abstract

NaCl absorption in the medullary thick ascending limb of the loop of Henle (THAL) is mediated by the apical Na/K/2Cl cotransporter (NKCC2). Hormones that increase cGMP, such as nitric oxide (NO) and natriuretic peptides, decrease NaCl absorption by the THAL. However, the mechanism by which cGMP decreases NaCl absorption in THALs is not known. We hypothesized that cGMP decreases surface NKCC2 levels in the THAL. We used surface biotinylation to measure surface NKCC2 levels in rat THAL suspensions. We tested the effect of the membrane-permeant cGMP analog dibutyryl-cGMP (db-cGMP) on surface NKCC2 levels. Incubating THALs with db-cGMP for 20 min decreased surface NKCC2 levels in a concentration-dependent manner (basal=100%; db-cGMP 100 microM=77+/-7%; 500 microM=54+/-10% and 1,000 microM=61+/-8%). A different cGMP analog 8-bromo-cGMP (8-Br-cGMP) also decreased surface NKCC2 levels by 25%, (basal=100%; 8-Br-cGMP=75+/-5%). Incubation of isolated, perfused THALs with db-cGMP decreased apical surface NKCC2 labeling levels as measured by immunofluorescence and confocal microscopy. cGMP-stimulated phosphodiesterase 2 (PDE2) mediates the inhibitory effect of NO on NaCl absorption by THALs. Thus we examined the role of PDE2 and found that PDE2 inhibitors blocked the effect of db-cGMP on surface NKCC2. Also, a nonstimulatory concentration of db-cAMP blocked the cGMP-induced decrease in surface NKCC2. Finally, db-cGMP inhibited THAL net Cl absorption by 48+/-4%, and this effect was completely blocked by PDE2 inhibition. We conclude that cGMP decreases NKCC2 levels in the apical membrane of THALs and that this effect is mediated by PDE2. This is an important mechanism by which cGMP inhibits NaCl absorption by the THAL.

Indexed as

AnimalsChloridesCyclic AMPCyclic GMPCyclic Nucleotide Phosphodiesterases, Type 2Dibutyryl Cyclic GMPEpithelial CellsLoop of HenleMaleMembrane ProteinsProtein TransportRatsRats, Sprague-DawleySignal TransductionSodium ChlorideSodium-Potassium-Chloride Symporters8-bromocyclic GMPChloridesCyclic AMPCyclic GMPCyclic Nucleotide Phosphodiesterases, Type 2Dibutyryl Cyclic GMPMembrane ProteinsPde2a protein, ratSlc12a1 protein, ratSodium ChlorideSodium-Potassium-Chloride SymportersSolute Carrier Family 12, Member 1

Identifiers

PMID18684888
PMCPMC2576138
OpenAlexW2049828277

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.