Evidence map›Paper›PMID 33989761›Full record

ReviewJournal of chemical neuroanatomy2021

COVID-19 and Parkinson's disease: Defects in neurogenesis as the potential cause of olfactory system impairments and anosmia.

Harini Sri Rethinavel, Sowbarnika Ravichandran, Risna Kanjirassery Radhakrishnan, Mahesh Kandasamy

Open access · greenAbstract readReview
In one paragraph

Review in Journal of chemical neuroanatomy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
3.9field-weighted citation impact, top 5% 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

22 citing papers in PubMed, 37 citations in OpenAlex.

  1. Article
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  9. Article
  10. TLRs: Innate Immune Sentries against SARS-CoV-2 Infection.International journal of molecular sciences · 2023
    Review
  11. Review
  12. Review
  13. Article
  14. COVID-19 causes neuronal degeneration and reduces neurogenesis in human hippocampus.Apoptosis : an international journal on programmed cell death · 2022
    Article
  15. Review
  16. Review
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  18. Article
  19. Review
  20. Linking COVID-19 and Parkinson's disease: Targeting the role of Vitamin-D.Biochemical and biophysical research communications · 2021
    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.

Harini Sri RethinavelLaboratory of Stem Cells and Neuroregeneration, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, 620024, Tamil Nadu, India.
Sowbarnika RavichandranLaboratory of Stem Cells and Neuroregeneration, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, 620024, Tamil Nadu, India; School of Life Sciences, Bharathidasan University, Tiruchirappalli, 620024, Tamil Nadu, India.
Risna Kanjirassery RadhakrishnanLaboratory of Stem Cells and Neuroregeneration, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, 620024, Tamil Nadu, India.
Mahesh KandasamyLaboratory of Stem Cells and Neuroregeneration, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, 620024, Tamil Nadu, India; School of Life Sciences, Bharathidasan University, Tiruchirappalli, 620024, Tamil Nadu, India; Faculty Recharge Programme, University Grants Commission (UGC-FRP), New Delhi, 110002, India. Electronic address: mahesh.kandasamy@bdu.ac.in.
Bharathidasan University · INUniversity Grants Commission · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Anosmia, a neuropathogenic condition of loss of smell, has been recognized as a key pathogenic hallmark of the current pandemic SARS-CoV-2 infection responsible for COVID-19. While the anosmia resulting from olfactory bulb (OB) pathology is the prominent clinical characteristic of Parkinson's disease (PD), SARS-CoV-2 infection has been predicted as a potential risk factor for developing Parkinsonism-related symptoms in a significant portion of COVID-19 patients and survivors. SARS-CoV-2 infection appears to alter the dopamine system and induce the loss of dopaminergic neurons that have been known to be the cause of PD. However, the underlying biological basis of anosmia and the potential link between COVID-19 and PD remains obscure. Ample experimental studies in rodents suggest that the occurrence of neural stem cell (NSC) mediated neurogenesis in the olfactory epithelium (OE) and OB is important for olfaction. Though the occurrence of neurogenesis in the human forebrain has been a subject of debate, considerable experimental evidence strongly supports the incidence of neurogenesis in the human OB in adulthood. To note, various viral infections and neuropathogenic conditions including PD with olfactory dysfunctions have been characterized by impaired neurogenesis in OB and OE. Therefore, this article describes and examines the recent reports on SARS-CoV-2 mediated OB dysfunctions and defects in the dopaminergic system responsible for PD. Further, the article emphasizes that COVID-19 and PD associated anosmia could result from the regenerative failure in the replenishment of the dopaminergic neurons in OB and olfactory sensory neurons in OE.

Indexed as

NeurogenesisAnimalsAnosmiaCOVID-19HumansOlfaction DisordersParkinson DiseaseAnosmiaCOVID-19NeurogenesisOlfactory dysfunctionParkinson’s disease

Identifiers

PMID33989761
PMCPMC8111887
OpenAlexW3161612935

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.