Effects of Doxycycline on Persistent Symptoms Post-neuroborreliosis

NCT ID: NCT01205464

Last Updated: 2010-09-20

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

Clinical Phase

NA

Total Enrollment

15 participants

Study Classification

INTERVENTIONAL

Study Start Date

2005-02-28

Study Completion Date

2008-02-29

Brief Summary

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The aim of this randomised, double-blind crossover study was to determine whether Doxycycline has an impact on the persistent symptoms post-neuroborreliosis, through alterations in the immune response and whether such an effect could influence the clinical outcome.

Detailed Description

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Persistent symptoms after treatment of neuroborreliosis (NB) are not uncommon. There is currently no evidence for improvement of symptoms after repeated or prolonged antibiotic treatment. However, clinical observations have indicated that some patients improve during treatment with doxycycline (DOX), but regain the symptoms some time after completed treatment. This may be due to an immunomodulatory effect of the drug. The aim of this randomised, double-blind crossover study was to determine whether DOX has an impact on the persistent symptoms through alterations in the immune response and whether such an effect can influence the clinical outcome.

A total of 15 patients from South-East Sweden with previously adequately diagnosed NB with diverse persistent symptoms ≥6months after antibiotic treatment were randomised in a double-blind, crossover fashion to receive either DOX 200 mg or placebo (PBO) once daily for three weeks, followed by a wash-out period of six weeks and a further three-weeks treatment with either DOX 200 mg or PBO once daily for three weeks. The primary outcome measures were improvement of the persistent symptoms and physical and mental health, evaluated using the visual analogue scale (VAS), the 36-item Short-Form General Health Survey (SF-36) and through physical examination with special emphasis on neurologic status at the follow-up visits. Secondary outcome measures were changes in drug-induced antigen-stimulated and unstimulated cytokine responses.

Conditions

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Fatigue Radicular Pain Cognitive Dysfunction Paresthesia Paresis

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

TRIPLE

Participants Caregivers Investigators

Study Groups

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Doxycycline

Treatment with Capsule Doxycycline 200 mg, once daily, for 21 days.

Group Type ACTIVE_COMPARATOR

Doxycycline

Intervention Type DRUG

Doxycycline, 100 mg, 2 capsules once daily, 24 hour time interval, 21 days.

Sugar pill

Capsule Placebo, 200 mg, once daily, for 21 days.

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Placebo, 100 mg, 2 capsules once daily, 24 hour dosage interval, 21 days.

Interventions

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Doxycycline

Doxycycline, 100 mg, 2 capsules once daily, 24 hour time interval, 21 days.

Intervention Type DRUG

Placebo

Placebo, 100 mg, 2 capsules once daily, 24 hour dosage interval, 21 days.

Intervention Type DRUG

Other Intervention Names

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Doxyferm Vibramycin Tetracycline Sugar pill

Eligibility Criteria

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Inclusion Criteria

* a history of adequately diagnosed and treated neuroborreliosis (presence of intrathecal borrelia-antibody production)
* persistence of symptoms (with debut in conjunction with neuroborreliosis) of typical character, such as headache, radiculitis, cognitive dysfunction, fatigue, mood disorders, paresthesia or paresis \> 6 months post-treatment of neuroborreliosis

Exclusion Criteria

* systemic immunosuppression (treatment with corticosteroids, cytostatics etc)
* ongoing infection at inclusion
* allergy against doxycycline
* pregnancy
* breast feeding
* psychiatric disease
* multiple sclerosis
* rheumatoid arthritis
* diabetes mellitus type 1 or II
* inflammatory systemic diseases
* liver ohc kidney dysfunction
* treatment with didanosine, quinapril, antacids
* malignancy
Minimum Eligible Age

18 Years

Maximum Eligible Age

85 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Linkoeping University

OTHER_GOV

Sponsor Role lead

Responsible Party

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Dep. of Infectious Diseases, Faculty of Health Scienses, Linköping University, Sweden

Principal Investigators

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Pia Forsberg, MD

Role: PRINCIPAL_INVESTIGATOR

Department of Infectious Diseases, Faculty of Health Sciences, Linköping university, Sweden

Locations

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Clinic for Infectious Diseases, University Hospital

Linköping, Östergötland County, Sweden

Site Status

Countries

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Sweden

References

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Sjowall J, Ledel A, Ernerudh J, Ekerfelt C, Forsberg P. Doxycycline-mediated effects on persistent symptoms and systemic cytokine responses post-neuroborreliosis: a randomized, prospective, cross-over study. BMC Infect Dis. 2012 Aug 10;12:186. doi: 10.1186/1471-2334-12-186.

Reference Type DERIVED
PMID: 22876748 (View on PubMed)

Other Identifiers

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151:2004/25331

Identifier Type: -

Identifier Source: org_study_id