Evidence map›Paper›PMID 33824353›Full record

ArticleScientific reports2021

The effect of dietary supplementation with Nigella sativa (black seeds) mediates immunological function in male Wistar rats.

Hany Salah Mahmoud, Amani A Almallah, Heba Nageh Gad El-Hak, Tahany Saleh Aldayel, Heba M A Abdelrazek, Howayda E Khaled

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
6.3field-weighted citation impact, top 4% 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

12 citing papers in PubMed, 32 citations in OpenAlex.

  1. Foods (Basel, Switzerland) · 2026
    Article
  2. Article
  3. Article
  4. Potential of Secondary Metabolite Compounds of Black Cumin Seeds (Drug design, development and therapy · 2025
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. A proprietary black cumin oil extract (Frontiers in nutrition · 2023
    Article
  10. Magnetite-Based Nanostructured Coatings Functionalized withAntibiotics (Basel, Switzerland) · 2022
    Article
  11. Animals : an open access journal from MDPI · 2022
    Article
  12. Biomolecules · 2021
    Review
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

6 authors at 3 institutions in 2 countries.

Hany Salah MahmoudCenter of Scientific Foundation for Experimental Studies and Research, Ismailia, 41511, Egypt.
Amani A AlmallahAnatomy and Embryology Department, Faculty of Medicine, Suez Canal University, Ismailia, 41522, Egypt.
Heba Nageh Gad El-HakZoology Department, Faculty of Sciences, Suez Canal University, Ismailia, 41522, Egypt.
Tahany Saleh AldayelNutrition and Food Science, Department of Physical Sport Sciences, Princess Nourah bint Abdulrahman University, Riyadh, 11671, Saudi Arabia. tsaldayel@pnu.edu.sa.
Heba M A AbdelrazekDepartment of Physiology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt.
Howayda E KhaledZoology Department, Faculty of Sciences, Suez University, Ismailia, 43533, Egypt.
Suez Canal University · EGPrincess Nourah bint Abdulrahman University · SASuez University · EG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This experiment aimed to investigate the effect of dietary Nigella sativa on the cell-mediated immune response. Eighteen male Wistar rats were divided equally into a control group and treated groups that received black seeds at rates of 30 and 50 g/kg in the diet (Sa30 and Sa50 groups, respectively, for 30 days. The weight gain, feed intake, feed conversion ratio (FCR), and cell-mediated immune response were monitored after the injection of 0.1 mL of 10% phytohemagglutinin (PHA). The intumesce index, serum total antioxidant capacity (TAC), catalase (CAT), interleukin-12 (IL-12), gamma interferon (γ-IF) and tumor necrosis factor alpha (TNF-α) were determined. Histopathological examination and an immunohistochemistry analysis of splenic caspase-3 and CD8 were performed. Nigella sativa significantly improved the weight gain and FCR. Intumesce index of Sa50 group was significantly increased. Nigella sativa significantly increased TAC, CAT, IL-12, γ-IF and TNF-α. A histological examination of PHA-stimulated foot pads showed increased leukocyte infiltration and edema in a dose-dependent pattern. Splenic caspase-3 and CD8 showed significant decreases and increases, respectively, in the Sa30 and Sa50 groups. The results indicate that Nigella sativa seeds exhibit immunostimulatory function through their antioxidant potential, induction of cytokine production, promotion of CD8 expression and reduction of splenic apoptosis.

Indexed as

Adjuvants, ImmunologicAnimalsAntioxidantsCytokinesDietDietary SupplementsImmunityMaleNigella sativaPlant ExtractsRatsRats, WistarSeedsSpleenAdjuvants, ImmunologicAntioxidantsCytokinesPlant Extracts

Identifiers

PMID33824353
PMCPMC8024296
OpenAlexW3149891299

What OpenQuestion holds

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LicenceCC BY
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.