Evidence map›Paper›PMID 34421535›Full record

ReviewFrontiers in molecular neuroscience2021

Nitric Oxide Deficiency in Mitochondrial Disorders: The Utility of Arginine and Citrulline.

Mohammed Almannai, Ayman W El-Hattab

Open access · goldAbstract readReview
In one paragraph

Review in Frontiers in molecular neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.7field-weighted citation impact, top 15% 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

15 citing papers in PubMed, 28 citations in OpenAlex.

  1. Article
  2. [Decreased plasma citrulline is a biochemical marker in newborn screening forZhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics · 2026
    Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Regulation of nitric oxide generation and consumption.International journal of biological sciences · 2025
    Review
  8. Article
  9. Article
  10. Review
  11. Challenges and opportunities to bridge translational to clinical research for personalized mitochondrial medicine.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2024
    Review
  12. Article
  13. Article
  14. Recent advances in mitochondrial diseases: From molecular insights to therapeutic perspectives.Saudi pharmaceutical journal : SPJ : the official publication of the Saudi Pharmaceutical Society · 2022
    Review
  15. 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

2 authors at 2 institutions in 2 countries.

Mohammed AlmannaiSection of Medical Genetics, Children's Hospital, King Fahad Medical City, Riyadh, Saudi Arabia.
Ayman W El-HattabDepartment of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates.
King Saud University · SAUniversity of Sharjah · AE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mitochondrial diseases represent a growing list of clinically heterogeneous disorders that are associated with dysfunctional mitochondria and multisystemic manifestations. In spite of a better understanding of the underlying pathophysiological basis of mitochondrial disorders, treatment options remain limited. Over the past two decades, there is growing evidence that patients with mitochondrial disorders have nitric oxide (NO) deficiency due to the limited availability of NO substrates, arginine and citrulline; decreased activity of nitric oxide synthase (NOS); and NO sequestration. Studies evaluating the use of arginine in patients with mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes (MELAS) presenting with stroke-like episodes showed symptomatic improvement after acute administration as well as a reduction in the frequency and severity of stroke-like episodes following chronic use. Citrulline, another NO precursor, was shown through stable isotope studies to result in a greater increase in NO synthesis. Recent studies showed a positive response of arginine and citrulline in other mitochondrial disorders besides MELAS. Randomized-controlled studies with a larger number of patients are warranted to better understand the role of NO deficiency in mitochondrial disorders and the efficacy of NO precursors as treatment modalities in these disorders.

Indexed as

argininecitrullineMELASmitochondrianitric oxide

Identifiers

PMID34421535
PMCPMC8374159
OpenAlexW3187962214

What OpenQuestion holds

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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.