Measurement of Substance P in Saliva of Low Back Pain Patients

NCT ID: NCT00735735

Last Updated: 2019-08-28

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

TERMINATED

Clinical Phase

NA

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2009-02-28

Study Completion Date

2014-03-31

Brief Summary

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The purpose of this study is to compare the levels of Substance P in saliva, in patients with severe chronic low back pain and in subjects without it. In addition, to explore a possible cutoff point, in order to define normal and pathological levels of Substance P in saliva. The ultimate objective would be to design a measurement method for use in routine clinical practice.

Detailed Description

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Conditions

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Low Back Pain

Study Design

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Intervention Model

PARALLEL

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

SINGLE

Investigators

Interventions

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The taking of a saliva sample from each subject.

After taking the sample, the saliva will be transferred via a pipette to a clean tube which will be labeled with the subject's name, the date and the hour. Once a month the tubes will be sent to the collaborating laboratory for analysis.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Patients referred to the Kovacs Back Pain Unit in Palma de Mallorca for chronic low back pain
* A pain level of 6 or greater on the PI-NRS scale (0=no pain, 10= worst pain possible)
* Seen at the Unit between 9 and 13 hours (due to the circadian rhythm of Substance P in saliva and to avoid great variability in the results)

For healthy subjects:

* Volunteers with no pain (anywhere)
* That in the past year have had no more than 40 days with pain, and no episode of more than 7 days of continuous pain.

Exclusion Criteria

* Subjects with pain that is additional to or different from chronic low back pain
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Kovacs Foundation

OTHER

Sponsor Role lead

Responsible Party

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Francisco M. Kovacs

Director of Scientific Department, Kovacs Foundation

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Francisco M Kovacs, MD, PhD

Role: STUDY_DIRECTOR

Kovacs Foundation, Palma de Mallorca, 07012, Spain

Mario Gestoso, MD

Role: PRINCIPAL_INVESTIGATOR

Kovacs Foundation,Palma de Mallorca, Spain

Locations

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Kovacs Foundation

Palma de Mallorca, Balearic Islands, Spain

Site Status

Countries

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Spain

References

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LeVasseur SA, Gibson SJ, Helme RD. The measurement of capsaicin-sensitive sensory nerve fiber function in elderly patients with pain. Pain. 1990 Apr;41(1):19-25. doi: 10.1016/0304-3959(90)91104-Q.

Reference Type BACKGROUND
PMID: 2162020 (View on PubMed)

Morton CR, Hutchison WD. Release of sensory neuropeptides in the spinal cord: studies with calcitonin gene-related peptide and galanin. Neuroscience. 1989;31(3):807-15. doi: 10.1016/0306-4522(89)90443-0.

Reference Type BACKGROUND
PMID: 2480554 (View on PubMed)

Kowalski ML, Sliwinska-Kowalska M, Kaliner MA. Neurogenic inflammation, vascular permeability, and mast cells. II. Additional evidence indicating that mast cells are not involved in neurogenic inflammation. J Immunol. 1990 Aug 15;145(4):1214-21.

Reference Type BACKGROUND
PMID: 1696295 (View on PubMed)

Thomas KL, Andrews PV, Khalil Z, Helme RD. Substance P induced hydrolysis of inositol phospholipids in rat skin in an in vivo model of inflammation. Neuropeptides. 1989 Apr;13(3):191-6. doi: 10.1016/0143-4179(89)90091-7.

Reference Type BACKGROUND
PMID: 2469033 (View on PubMed)

Other Identifiers

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FK 26

Identifier Type: -

Identifier Source: org_study_id

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