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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01205464
Other study ID # 151:2004/25331
Secondary ID
Status Completed
Phase N/A
First received September 17, 2010
Last updated September 17, 2010
Start date February 2005
Est. completion date February 2008

Study information

Verified date February 2005
Source Linkoeping University
Contact n/a
Is FDA regulated No
Health authority Sweden: Medical Products Agency
Study type Interventional

Clinical Trial Summary

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.


Description:

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.


Recruitment information / eligibility

Status Completed
Enrollment 15
Est. completion date February 2008
Est. primary completion date February 2008
Accepts healthy volunteers No
Gender Both
Age group 18 Years to 85 Years
Eligibility 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

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Caregiver, Investigator), Primary Purpose: Basic Science


Intervention

Drug:
Doxycycline
Doxycycline, 100 mg, 2 capsules once daily, 24 hour time interval, 21 days.
Placebo
Placebo, 100 mg, 2 capsules once daily, 24 hour dosage interval, 21 days.

Locations

Country Name City State
Sweden Clinic for Infectious Diseases, University Hospital Linköping Östergötland

Sponsors (1)

Lead Sponsor Collaborator
Linkoeping University

Country where clinical trial is conducted

Sweden, 

Outcome

Type Measure Description Time frame Safety issue
Primary Improvement in persistent symptoms 12 weeks No
Secondary Changes in cytokine levels in plasma/serum in patients during treatment with DOX/PBO 12 weeks No
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