Evidence map›Paper›PMID 32307711›Full record

ArticleBritish journal of haematology2020

Homocysteine is associated with severity of microvasculopathy in sickle cell disease patients.

Sandra L Samarron, Joshua W Miller, Anthony T Cheung, Peter C Chen, Xin Lin, Theodore Zwerdling, Ted Wun, Ralph Green

Registry-linked trialOpen access · bronzeAbstract read
In one paragraph

Article in British journal of haematology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05011032 (Effects of Homocysteine in Myocardial Infarction Patients in a Tertiary Care Hospital of Twin Cities of Pakistan), which is not on this map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
0.9field-weighted citation impact, top 26% 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.

NCT05011032 nawithdrawnnot on this mapstarted 2021, after this paper: background citation

Effects of Homocysteine in Myocardial Infarction Patients in a Tertiary Care Hospital of Twin Cities of Pakistan

TypeinterventionalSponsorAqua Medical Services (Pvt) LtdRan2021 to 2021Enrolled0ConditionsHomocystine, Metabolic DisorderArmsHomocysteine
3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 1 country.

Sandra L SamarronDepartment of Medical Pathology and Laboratory Medicine, University of California, Davis, CA, USA.
Joshua W MillerDepartment of Nutritional Sciences, Rutgers University, New Brunswick, NJ, USA.ORCID 0000-0002-9126-0224
Anthony T CheungDepartment of Medical Pathology and Laboratory Medicine, University of California, Davis, CA, USA.
Peter C ChenInstitute for Biomedical Sciences, San Diego, CA, USA.
Xin LinDepartment of Medical Pathology and Laboratory Medicine, University of California, Davis, CA, USA.
Theodore ZwerdlingDepartment of Pediatrics (Hematology-Oncology), University of California, Davis, CA, USA.
Ted WunDepartment of Medical Pathology and Laboratory Medicine, University of California, Davis, CA, USA.ORCID 0000-0003-1117-6450
Ralph GreenDepartment of Medical Pathology and Laboratory Medicine, University of California, Davis, CA, USA.ORCID 0000-0002-9935-230X
University of California Davis Medical Center · USCalifornia Institute for Biomedical Research · USRutgers, The State University of New Jersey · USUniversity of California, Davis · US

Funding

Translational Research Support CoreP30ES005022 · NIEHS · UNIV OF MED/DENT NJ-R W JOHNSON MED SCH · PI ROBERT John LAUMBACH · 1988 to 2026
$47.4M
UC Davis Clinical and Translational Science CenterUL1TR001860 · NCATS · UNIVERSITY OF CALIFORNIA AT DAVIS · PI KENYON, NICHOLAS J., LYLES, COURTNEY REES · 2016 to 2025
$47.3M
Vitamin B6, Vascular Dysfunction and Adhesion Molecules in Sickle Cell DiseaseR01HL083276 · NHLBI · UNIVERSITY OF CALIFORNIA AT DAVIS · PI GREEN, RALPH · 2007 to 2010
$1.5M
NCATS NIH HHS UL1 TR001860NHLBI NIH HHS R01 HL083276NIEHS NIH HHS P30 ES005022
6 · The paper itself

Abstract

The pathophysiology of sickle cell disease (SCD) includes vasculopathy as well as anaemia. Elevated plasma homocysteine is a risk factor for vascular disease and may be associated with increased risk of vascular complications in SCD patients. In the present study, microvascular characteristics were assessed in the bulbar conjunctiva of 18 paediatric and 18 adult SCD patients, using the non-invasive technique of computer-assisted intravital microscopy. A vasculopathy severity index (SI) was computed to quantify the degree of microvasculopathy in each patient. Plasma homocysteine and several of its determinants [serum folate and vitamin B12, plasma pyridoxal-5'-phosphate (vitamin B6 status) and creatinine (kidney function)] were measured. Age was strongly correlated with microvasculopathy in the SCD patients, with the SI increasing about 0·1 unit per one-year increase in age (P < 0·001). After adjusting for age, gender, B-vitamin status and creatinine, homocysteine concentration was directly correlated with severity index (P < 0·05). Age and homocysteine concentration were independent predictors of microvasculopathy in SCD patients. It remains to be determined whether lowering homocysteine concentrations using appropriate B-vitamin supplements (folate and vitamins B12 and B6) - particularly if started early in life - could ameliorate microvasculopathy and its associated complications in SCD patients.

Indexed as

MicrocirculationAdolescentAdultAnemia, Sickle CellChildChild, PreschoolCreatineFolic AcidHomocysteineHumansIntravital MicroscopyMiddle AgedPyridoxal PhosphateSeverity of Illness IndexThrombotic MicroangiopathiesVitamin B 12CreatineFolic AcidHomocysteinePyridoxal PhosphateVitamin B 12folate vitamin B12homocysteineintravital microscopymicrovasculaturesickle cell diseasevitamin B6

Identifiers

PMID32307711
PMCPMC7415728
OpenAlexW3016542639

What OpenQuestion holds

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Read underepoch 390

Registered trials

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.