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BlueCQ Bioavailability

This study has been completed.
Information provided by:
Heidelberg University Identifier:
First received: September 12, 2005
Last updated: NA
Last verified: July 2004
History: No changes posted

Bioavailability of methylene blue (MB) - comparison of an i.v. and two oral MB formulations - and influence of sustained release MB on chloroquine (CQ) concentrations in whole blood, plasma and urine.

Intraindividual cross over open comparison in healthy male and female individuals (6:6) with different MB formulations in randomised order for the determination of the absolute bioavailability of MB (part 1), followed by an explorative randomised parallel group comparison of CQ disposition when CQ is given alone (3 males and 3 females) or in combination with 1000 mg sustained release MB (3 males and 3 females) in the participants of study part 1 (part 2).

Condition Phase
Methylene Blue Chloroquine Pharmacokinetics Bioavailability Phase 1

Study Type: Observational
Study Design: Observational Model: Defined Population
Primary Purpose: Screening
Time Perspective: Cross-Sectional
Time Perspective: Prospective
Official Title: B l u e C Q - P r o j e c t: Bioavailability of Methylene Blue (MB) - Comparison of an Intravenous and Two Oral Formulations - and Influence of Sustained Release MB on Chloroquine (CQ) Concentrations

Further study details as provided by Heidelberg University:

Estimated Enrollment: 18
Study Start Date: August 2004
Estimated Study Completion Date: November 2004
Detailed Description:

Maximum whole blood methylene blue (MB) concentrations after i.v. and oral administration may differ in the magnitude of 100:1. For achieving MB concentrations possibly effective against malaria when using different pharmaceutical formulations, determination of oral bioavailability of MB is necessary. To investigate this 12 healthy subjects (6 females, 6 males) will receive in a randomised cross over design MB 50 mg i.v. and MB 500 mg as a oral solution.

For generating this information for a planned phase II/III study in Africa, an intravenous and an oral MB preparation will be investigated.

A second part of the study will explorative investigate the influence of MB on chloroquine (CQ) plasma concentrations. During this part 6 healthy subjects (3 females, 6 males) will receive either CQ alone or in combination with MB 500 mg, the design of this part will be a parallel design.


Ages Eligible for Study:   18 Years to 50 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

Good state of health physically and mentally

Exclusion Criteria:

Any regular drug treatment currently or past (within the last 2 months) except for oral contraceptives in females Treatment with a known inhibitor or inducer of drug metabolising enzymes or transport proteins within a period of less than 10 times the respective elimination half-life

Any acute or chronic illness, especially:

Glucose-6-phosphate dehydrogenase deficiency Allergic disposition or history of hypersensitivity reactions Smoking Alcohol or drug abuse

  Contacts and Locations
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Please refer to this study by its identifier: NCT00176072

Sponsors and Collaborators
Heidelberg University
Principal Investigator: Gerd Mikus, MD Bsc Department Internal Medicine VI
  More Information Identifier: NCT00176072     History of Changes
Other Study ID Numbers: K102
Study First Received: September 12, 2005
Last Updated: September 12, 2005 processed this record on August 18, 2017