Evidence map›Paper›PMID 18270324›Full record

ArticleBlood2008

Red blood cells induce hypoxic lung inflammation.

Rainer Kiefmann, Joseph M Rifkind, Enika Nagababu, Jahar Bhattacharya

Open access · bronzeAbstract read
In one paragraph

Article in Blood, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
4.1field-weighted citation impact, top 6% 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

58 citing papers in PubMed, 110 citations in OpenAlex.

  1. Autologous transfusion of stored red blood cells increases pulmonary artery pressure.American journal of respiratory and critical care medicine · 2014
    Trial
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Live Imaging of the Lung.Current protocols in cytometry · 2020
    Article
  10. Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Rainer KiefmannLung Biology Laboratory, College of Physicians & Surgeons, Columbia University, St Luke's Roosevelt Hospital Center, New York, NY, USA.
Joseph M Rifkind
Enika Nagababu
Jahar Bhattacharya
Columbia University · USNational Institute on Aging · US

Funding

OPTICAL IMAGING OF MESENCHYMAL STEM CELL INTERACTIONS WITH LUNG MICROVESSELSR01HL057556 · NHLBI · ST. LUKE'S-ROOSEVELT INST FOR HLTH SCIS · PI BHATTACHARYA, JAHAR · 1997 to 2020
$8.0M
ALVEOLO-CAPILLARY SIGNALING IN LUNG IMMUNOLOGYR01HL069514 · NHLBI · ST. LUKE'S-ROOSEVELT INST FOR HLTH SCIS · PI BHATTACHARYA, JAHAR · 2001 to 2009
$3.2M
Structure-function Relationships In Hemoglobin And ErythrocytesZIAAG000047 · NIA · NATIONAL INSTITUTE ON AGING · PI RIFKIND, JOSEPH · 2009 to 2013
$2.1M
Intramural NIH HHSNHLBI NIH HHS HL57556NHLBI NIH HHS HL69514NHLBI NIH HHS R01 HL057556NHLBI NIH HHS R01 HL069514
6 · The paper itself

Abstract

Hypoxia, which commonly associates with respiratory and cardiovascular diseases, provokes an acute inflammatory response. However, underlying mechanisms are not well understood. Here we report that red blood cells (RBCs) induce hypoxic inflammation by producing reactive oxygen species (ROS) that diffuse to endothelial cells of adjoining blood vessels. Real-time fluorescence imaging of rat and mouse lungs revealed that in the presence of RBC-containing vascular perfusion, hypoxia increased microvascular ROS, and cytosolic Ca(2+), leading to P-selectin-dependent leukocyte recruitment. However, in the presence of RBC-free perfusion, all hypoxia-induced responses were completely inhibited. Because hemoglobin (Hb) autoxidation causes RBC superoxide formation that readily dismutates to H(2)O(2), hypoxia-induced responses were lost when we inhibited Hb autoxidation with CO or nitrite, or when the H(2)O(2) inhibitor, catalase was added to the infusion to neutralize the RBC-derived ROS. By contrast, perfusion with RBCs from BERK-trait mice that are more susceptible to Hb autoxidation and to hypoxia-induced superoxide production enhanced the hypoxia-induced responses. We conclude that in hypoxia, increased Hb autoxidation augments superoxide production in RBCs. Consequently, RBCs release H(2)O(2) that diffuses to the lung microvascular endothelium, thereby initiating Ca(2+)-dependent leukocyte recruitment. These findings are the first evidence that RBCs contribute to hypoxia-induced inflammation.

Indexed as

AnimalsChemotaxis, LeukocyteEndothelial CellsEndothelium, VascularErythrocytesHemoglobinsHydrogen PeroxideHypoxiaIn Vitro TechniquesLungMicePneumoniaRatsReactive Oxygen SpeciesHemoglobinsHydrogen PeroxideReactive Oxygen Species

Identifiers

PMID18270324
PMCPMC2384143
OpenAlexW2002027087

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.