Evidence map›Paper›PMID 34275090›Full record

ArticleDigestive diseases and sciences2022

Protective Effect of Saffron in Mouse Colitis Models Through Immune Modulation.

Gulshan Singh, Yeneneh Haileselassie, Allison Ruoheng Ji, Holden Terry Maecker, Sidhartha R Sinha, Hassan Brim, Aida Habtezion, Hassan Ashktorab

Abstract read
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In one paragraph

Article in Digestive diseases and sciences, 2022. 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
1.8field-weighted citation impact, top 12% 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, 26 citations in OpenAlex.

  1. Review
  2. Review
  3. Review
  4. Therapeutic Potential ofPharmaceuticals (Basel, Switzerland) · 2025
    Article
  5. Review
  6. Review
  7. Review
  8. Article
  9. Active constituents of saffron (Experimental and therapeutic medicine · 2023
    Review
  10. Life (Basel, Switzerland) · 2023
    Article
  11. Review
  12. Review
  13. Review
  14. Article
  15. 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 2 institutions in 1 country.

Gulshan SinghGastroenterology Division and Hepatology, School of Medicine, Stanford University, Palo Alto, CA, USA.
Yeneneh HaileselassieGastroenterology Division and Hepatology, School of Medicine, Stanford University, Palo Alto, CA, USA.
Allison Ruoheng JiGastroenterology Division and Hepatology, School of Medicine, Stanford University, Palo Alto, CA, USA.
Holden Terry MaeckerMicrobiology & Immunology, Human Immune Monitoring Center, Stanford University, Palo Alto, CA, USA.
Sidhartha R SinhaGastroenterology Division and Hepatology, School of Medicine, Stanford University, Palo Alto, CA, USA.
Hassan BrimDepartment of Pathology, Howard University College of Medicine, Washington, DC, USA.
Aida Habtezion *Gastroenterology Division and Hepatology, School of Medicine, Stanford University, Palo Alto, CA, USA.
Hassan Ashktorab *Department of Medicine and Cancer Center, Howard University College of Medicine, Washington, DC, USA. hashktorab@howard.edu.ORCID 0000-0002-4048-4666
Stanford University · USHoward University · US

Funding

PROTEOMICS CORE FACILITYG12MD007597 · NIMHD · HOWARD UNIVERSITY · PI SOUTHERLAND, WILLIAM M. · 2012 to 2018
$14.8M
NIH HHS G12MD007597
6 · The paper itself

Abstract

backgroundPeople with inflammatory bowel disease (IBD) including ulcerative colitis are at risk for colorectal cancer. Despite available effective drugs used to treat IBD, many patients fail or lose response over time with some displaying drug-induced adverse events. Saffron (Crocus sativus) has been reported to have anti-inflammatory properties. Its protective role in IBD has not been explored extensively.

aimTo establish whether saffron treatment alleviates inflammation in experimental colitis.

methodsColitis was induced in C57BL/6 mice with 3% DSS and treated with either saffron doses (7.5, 15, 20, 25 mg/kg body weight) or vehicle through daily gavage. On day 11, mice were euthanized and analyzed for gross and microscopic inflammation. Distal colon segments were collected for mRNA and protein expression of HO-1 protein and GPX2, (the downstream targets of NRF-2). Nrf-2 translocation from cytosol to nucleus was confirmed by immunofluorescence, and further Nrf-2 protein expression in nuclear and cytosolic fraction of colon was analyzed by immunoblot. Immune cells were isolated from the lamina propria of mouse colon for flow cytometry-based immunophenotyping. Colitis was also induced in C57BL/6 Ahr knockout and wild type mice to explore the involvement of Ahr-dependent pathways in saffron's protective effect(s). The therapeutic effect of saffron was further validated in another TNBS model of colitis.

resultsSaffron 20 mg/kg body weight showed improved colon gross and histology features and led to better body weight, colon length, histology score, and reduced disease activity index (DAI). Saffron significantly decreased pro-inflammatory macrophages (M1), while increasing anti-inflammatory macrophages (M2) and IL10 + dendritic cells. Saffron treatment also enhanced CD3 + T and CD3 + CD8 + T cells followed by increase in different CD3 + CD4 + T cells subsets like CD25 + T cells, FoxP3 + CD25 + regulatory T cells, and CD4 + FOXP3 + CD25-regulatory T cells. Immunoblot analysis showed a significant increase in HO-1/GPX2 protein expression. With saffron treatment, Nrf-2 translocation into nucleus from cytosol also supports the involvement of Nrf-2 and its downstream targets in the protective effect of saffron. Further, we demonstrated that saffron in part exert anti-inflammatory effect through activation of aryl hydrocarbon receptor (AhR)-nuclear factor erythroid 2-related factor 2 (Nrf2)-dependent pathways.

conclusionThese data demonstrate saffron's therapeutic potential and its protective role in part via Ahr/Nrf-2 pathways and regulatory innate and adaptive immune cells.

Indexed as

ColitisCrocusInflammatory Bowel DiseasesAnimalsAnti-Inflammatory AgentsBody WeightColonDextran SulfateDisease Models, AnimalForkhead Transcription FactorsHumansInflammationIntestinal MucosaMiceMice, Inbred C57BLAnti-Inflammatory AgentsDextran SulfateForkhead Transcription FactorsAhrAnti-TNFαColitisGPX2HO-1IBDIL-10Saffron

Identifiers

PMID34275090
OpenAlexW3185764991

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.