Evidence map›Paper›PMID 22248260›Full record

ArticleCardiovascular diabetology2012

Platelet hyperaggregability in high-fat fed rats: a role for intraplatelet reactive-oxygen species production.

Priscila F Monteiro, Rafael P Morganti, Maria A Delbin, Marina C Calixto, Maria E Lopes-Pires, Sisi Marcondes, Angelina Zanesco, Edson Antunes

Open access · goldAbstract read
In one paragraph

Article in Cardiovascular diabetology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
2.9field-weighted citation impact, top 9% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

  1. Pooled it
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  15. Aging of the nitric oxide system: are we as old as our NO?Journal of the American Heart Association · 2014
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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

8 authors at 2 institutions in 1 country.

Priscila F MonteiroDepartment of Pharmacology, University of Campinas, Campinas, Sao Paulo, Brazil.
Rafael P Morganti
Maria A Delbin
Marina C Calixto
Maria E Lopes-Pires
Sisi Marcondes
Angelina Zanesco
Edson Antunes
Universidade Estadual de Campinas (UNICAMP) · BRUniversidade Estadual Paulista (Unesp) · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAdiposity greatly increases the risk of atherothrombotic events, a pathological condition where a chronic state of oxidative stress is reported to play a major role. This study aimed to investigate the involvement of (NO)-soluble guanylyl cyclase (sGC) signaling pathway in the platelet dysfunction from high fat-fed (HFF) rats.

methodsMale Wistar rats were fed for 10 weeks with standard chow (SCD) or high-fat diet (HFD). ADP (10 μM)- and thrombin (100 mU/ml)-induced washed platelet aggregation were evaluated. Measurement of intracellular levels of ROS levels was carried out using flow cytometry. Cyclic GMP levels were evaluated using ELISA kits.

resultsHigh-fat fed rats exhibited significant increases in body weight, epididymal fat, fasting glucose levels and glucose intolerance compared with SCD group. Platelet aggregation induced by ADP (n = 8) and thrombin from HFD rats (n = 8) were significantly greater (P < 0.05) compared with SCD group. Platelet activation with ADP increased by 54% the intraplatelet ROS production in HFD group, as measured by flow cytometry (n = 6). N-acetylcysteine (NAC; 1 mM) and PEG-catalase (1000 U/ml) fully prevented the increased ROS production and platelet hyperaggregability in HFD group. The NO donors sodium nitroprusside (SNP; 10 μM) and SNAP (10 μM), as well as the NO-independent soluble guanylyl cyclase stimulator BAY 41-2272 (10 μM) inhibited the platelet aggregation in HFD group with lower efficacy (P < 0.05) compared with SCD group. The cGMP levels in response to these agents were also markedly lower in HFD group (P < 0.05). The prostacyclin analogue iloprost (1 μM) reduced platelet aggregation in HFD and SCD rats in a similar fashion (n = 4).

conclusionsMetabolic abnormalities as consequence of HFD cause platelet hyperaggregability involving enhanced intraplatelet ROS production and decreased NO bioavailability that appear to be accompanied by potential defects in the prosthetic haem group of soluble guanylyl cyclase.

Indexed as

Oxidative StressPlatelet AggregationAdenosine DiphosphateAnimalsAntioxidantsBlood PlateletsCyclic GMPDiet, High-FatEnzyme ActivationEnzyme ActivatorsEnzyme-Linked Immunosorbent AssayFlow CytometryGlucose IntoleranceGlucose Tolerance TestGuanylate CyclaseInsulin ResistanceAdenosine DiphosphateAntioxidantsCyclic GMPEnzyme ActivatorsGuanylate CyclaseNitric OxideNitric Oxide DonorsPlatelet Aggregation InhibitorsReactive Oxygen SpeciesReceptors, Cytoplasmic and NuclearSoluble Guanylyl CyclaseThrombin

Identifiers

PMID22248260
PMCPMC3320560
OpenAlexW2054327773

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.