Evidence map›Paper›PMID 33614035›Full record

ArticleSAGE open medicine2021

Deficiency of antioxidants and increased oxidative stress in COVID-19 patients: A cross-sectional comparative study in Jigawa, Northwestern Nigeria.

Yahaya Muhammad, Yamuna Aminu Kani, Sani Iliya, Jafaru Bunza Muhammad, Abubakar Binji, Abdurrahman El-Fulaty Ahmad, Muhd Bashir Kabir, Kabir Umar Bindawa, Armaya'u Ahmed

Open access · goldAbstract read
In one paragraph

Article in SAGE open medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 93 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
93citing papers in PubMed, 3 pooled it
9.4field-weighted citation impact, top 2% 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

93 citing papers in PubMed, 3 syntheses or guidelines pooled it, 163 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. COVID-19 and Selenium Deficiency: a Systematic Review.Biological trace element research · 2022
    Pooled it
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Biomarkers of Oxidative Stress in COVID-19 Patients.International journal of molecular sciences · 2025
    Article
  14. Article
  15. Article
  16. Article
  17. Post-Acute Sequelae and Mitochondrial Aberration in SARS-CoV-2 Infection.International journal of molecular sciences · 2024
    Review
  18. Article
  19. Article
  20. Article

33 more citing papers are in PubMed but not listed here.

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

9 authors at 5 institutions in 2 countries.

Yahaya MuhammadDepartment of Chemical Pathology, Rasheed Shekoni Teaching Hospital Dutse, Dutse, Nigeria.ORCID https://orcid.org/0000-0002-7873-6283
Yamuna Aminu KaniCollege of Medicine and Health Sciences, Federal University Dutse, Dutse, Nigeria.
Sani IliyaDepartment of Biological Sciences, School of Pure and Applied Sciences, Mount Kenya University, Thika, Kenya.ORCID https://orcid.org/0000-0001-7685-3147
Jafaru Bunza MuhammadDepartment of Chemical Pathology, School of Medical Laboratory Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria.
Abubakar BinjiHealth Without Gaps (HWG) Foundation, Hopkins, MN, USA.
Abdurrahman El-Fulaty AhmadDepartment of Medical Laboratory Science, Ahmadu Bello University Zaria, Zaria, Nigeria.ORCID https://orcid.org/0000-0003-1941-8346
Muhd Bashir KabirDepartment of Biotechnology, Federal University Dutse, Jigawa, Nigeria.
Kabir Umar BindawaDepartment of Medical Laboratory Science, Ahmadu Bello University Zaria, Zaria, Nigeria.
Armaya'u AhmedDepartment of Chemical Pathology, Usmanu Danfodiyo University Teaching Hospital Sokoto, Sokoto, Nigeria.
Ahmadu Bello University · NGFederal University DutseMount Kenya University · KEUsmanu Danfodiyo University · NGUsmanu Danfodiyo University Teaching Hospital, Sokoto · NG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe COVID-19 is a pandemic caused by SARS-CoV-2 which has infected over 74 million people, killing more than 1,600,000 million people around the world as of 17th December 2020. Accumulation of free radicals coupled by weakened antioxidant system leads to oxidative stress, which will further worsen respiratory diseases, COVID-19 inclusive. This study aimed to examine the levels of some antioxidants and oxidative stress markers in COVID-19 patients.

methodsThis was a cross-sectional comparative study in which 50 COVID-19 symptomatic patients who were on admission at the COVID-19 isolation center in Jigawa, Northwestern Nigeria, were recruited. Twenty one (21) apparently healthy individuals were included as controls. Levels of antioxidant trace elements (Se, Zn, Mg, Cu and Cr), 8-isoprostaglandin F2 alpha and malondialdehyde in the plasma and erythrocytes activity of glutathione, glutathione peroxidase, superoxide dismutase and catalase were determined.

resultsThe plasma concentrations of vitamins A, C and E were significantly lower (

conclusionIn conclusion, COVID-19 patients are prone to depleted levels of antioxidant substances due to their increase utilization in counterbalancing the negative effect of free radicals. Furthermore, COVID-19 infection with other comorbidities, such as malaria, hypertension and diabetes, are at higher risk of developing oxidative stress.

Indexed as

antioxidantsCOVID-19free radicalsNigeriavitamin A

Identifiers

PMID33614035
PMCPMC7871282
OpenAlexW3127106206

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.