Siderophore-profile in Allergic and Non-allergic Subjects

NCT ID: NCT03815981

Last Updated: 2023-03-15

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

74 participants

Study Classification

OBSERVATIONAL

Study Start Date

2018-12-12

Study Completion Date

2021-12-12

Brief Summary

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This study aims to profile the siderophore-content in the human gut from allergic and non-allergic subjects and to assess their contribution in iron homeostasis.

Detailed Description

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Iron is an essential nutrient for the majority of commensal bacteria, which commonly secrete siderophores to liberate iron from their surroundings. In several studies, a misbalanced microbiota has been demonstrated in allergics suggesting that also their siderophore profile is severely attenuated.

There are currently no data and very limited knowledge present on the composition of bacterial surviving factors in humans, or on their impact on the human immune system.

As such, 1) the iron status, 2) the microbial biota composition and the 3) siderophore-profile in allergics and non-allergics will be assessed.

Conditions

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Allergy Healthy Allergic Sensitisation

Study Design

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Observational Model Type

COHORT

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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Allergic

Collection of blood, stool, urin samples

No interventions assigned to this group

Sensitized

Collection of blood, stool, urin samples

No interventions assigned to this group

Non-Allergic

Collection of blood, stool, urin samples

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* allergic and non-allergic volunteers
Minimum Eligible Age

18 Years

Maximum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Medical University of Vienna

OTHER

Sponsor Role lead

Responsible Party

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Franziska Roth-Walter

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Franziska Roth-Walter, PhD

Role: PRINCIPAL_INVESTIGATOR

Medical University of Vienna

Locations

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Medical University of Vienna

Vienna, , Austria

Site Status

Countries

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Austria

References

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Roth-Walter F, Pacios LF, Bianchini R, Jensen-Jarolim E. Linking iron-deficiency with allergy: role of molecular allergens and the microbiome. Metallomics. 2017 Dec 1;9(12):1676-1692. doi: 10.1039/c7mt00241f. Epub 2017 Nov 9.

Reference Type BACKGROUND
PMID: 29120476 (View on PubMed)

Petje LM, Jensen SA, Szikora S, Sulzbacher M, Bartosik T, Pjevac P, Hausmann B, Hufnagl K, Untersmayr E, Fischer L, Vyskocil E, Eckl-Dorna J, Jensen-Jarolim E, Hofstetter G, Afify SM, Krenn CG, Roth GA, Rivelles E, Hann S, Roth-Walter F. Functional iron-deficiency in women with allergic rhinitis is associated with symptoms after nasal provocation and lack of iron-sequestering microbes. Allergy. 2021 Sep;76(9):2882-2886. doi: 10.1111/all.14960. Epub 2021 Jun 17. No abstract available.

Reference Type DERIVED
PMID: 34037999 (View on PubMed)

Other Identifiers

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1972/2017

Identifier Type: -

Identifier Source: org_study_id

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