Evidence map›Paper›PMID 28151458›Full record

Trial reportAnnals of Saudi medicine

Effect of Nigella sativa supplementation over a one-year period on lipid levels, blood pressure and heart rate in type-2 diabetic patients receiving oral hypoglycemic agents: nonrandomized clinical trial.

Ahmed Badar, Huda Kaatabi, Abdullah Bamosa, Abdulmohsen Al-Elq, Bodour Abou-Hozaifa, Fatma Lebda, Akram Alkhadra, Sameeh Al-Almaie

Open access · diamondAbstract readClinical Trial
In one paragraph

Trial report in Annals of Saudi medicine. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
7.1field-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

26 citing papers in PubMed, 74 citations in OpenAlex.

  1. Trial
  2. Trial
  3. The Role of the Gut Microbiota in Vascular Physiology and Health.International journal of molecular sciences · 2025
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  6. Clinical andInfectious disorders drug targets · 2025
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  7. International journal of molecular sciences · 2024
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  8. Review
  9. Review
  10. Therapeutic Effects ofOxidative medicine and cellular longevity · 2024
    Article
  11. Article
  12. Potential Pharmacological Applications ofPlants (Basel, Switzerland) · 2023
    Review
  13. Article
  14. Effect ofCurrent issues in molecular biology · 2023
    Review
  15. Synergistic Effects of Nigella sativa and Exercise on Diabetic Profiles: A Systematic Review.Diabetes therapy : research, treatment and education of diabetes and related disorders · 2023
    Review
  16. The Effectiveness ofVascular health and risk management · 2023
    Article
  17. Review
  18. Article
  19. Potential health benefits ofFrontiers in nutrition · 2022
    Review
  20. Frontiers in nutrition · 2022
    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

8 authors at 1 institution in 1 country.

Ahmed Badar
Huda Kaatabi
Abdullah BamosaProfessor Abdullah Omar Bamosa, Imam Abdulrahman AlFaisal University,, Physiology, College of Medicine,, PO Box 2114, Dammam 31451, Saudi Arabia, M: +966-505853161, bamosa@uod.edu.sa, ORCID: http://orcid.org/0000-0003-3061-6626.
Abdulmohsen Al-Elq
Bodour Abou-Hozaifa
Fatma Lebda
Akram Alkhadra
Sameeh Al-Almaie
Imam Abdulrahman Bin Faisal University · SA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDiabetic patients with hypertension and dyslipidemia are at a high risk of cardiovascular complications.

objectivesTo determine the effect of Nigella sativa supplementation on the lipid profile, mean arterial pressure, and heart rate in persons with type 2 diabetes on oral hypoglycemic agents (OHA).

designSingle-blind, nonrandomized.

settingDiabetes clinic of a university hospital in Saudi Arabia. PATIENTS AND

methodsType-2 diabetic patients were recruited by purposive sampling and assigned to treatment or control at the discretion of the investigator with the patient blinded to treatment. Before the in.tervention and every 3 months thereafter until the end of the treatment period, the following parameters were measured: triglycerides (TG), total cholesterol (TC), low density lipoprotein cholesterol (LDL-C), high density lipoprotein cholesterol (HDL-C), systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), heart rate (HR), and body mass index (BMI). Results at the baseline and each subsequent visit were compared between the two groups. MAIN OUTCOME MEASURE(S): Lipid and cardiovascular parameters, and BMI.

resultsFifty-seven patients were assigned to receive N sativa 2 g daily for one year and 57 were assigned to receive an identical regimen of placebo, along with OHA. A significant decrease in HDL-C and increase in the TC/HDL-C and LDL-C/HDL-C ratios were seen in the control group. The N sativa group had a signifi.cant decline in TC, LDL-C, TC/HDL-C and LDL-C/HDL-C ratios, compared with the respective baseline data and the control group. HDL-C was significantly elevated in the N sativa group. The control group showed a significant elevation in MAP. The N sativa group had a significant reduction in SBP, DBP, MAP and HR and a significant decrease in DBP, MAP and HR as compared with the control group.

conclusionN sativa supplementation improves total cholesterol, mean arterial pressure and heart rate in type 2 diabetes patients on oral hypoglycemic agents. LIMITATIONS: There were 9 subjects in each group lost to follow up; thus the sample size could not be maintained as per the sample size calculation. The study was nonrandomized and thus there was a possibility of allocation bias. (Clinical trial registration number: CTRI/2013/06/003781, Clinical Trial Registry of India).

Indexed as

Dietary SupplementsNigella sativaPhytotherapyAdultBlood PressureCholesterol, HDLCholesterol, LDLDiabetes Mellitus, Type 2FemaleHeart RateHumansHypoglycemic AgentsLipidsMaleMiddle AgedPlant ExtractsCholesterol, HDLCholesterol, LDLHypoglycemic AgentsLipidsPlant ExtractsTriglycerides

Identifiers

PMID28151458
PMCPMC6148980
OpenAlexW2586513030

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.