SP Resistance and Falciparum Malaria Transmission

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00299247
Recruitment Status : Withdrawn
First Posted : March 6, 2006
Last Update Posted : August 27, 2010
Information provided by:
National Institute of Allergy and Infectious Diseases (NIAID)

Brief Summary:
The purpose of this study is to study resistance to current malaria treatments and affordable alternatives for uncomplicated malaria. Resistance occurs in areas where these treatments are used frequently. This study may help prevent future resistance. About 150 residents in Buenaventura, Colombia will participate. They will have uncomplicated malaria and they will be followed for 28 days after treatment. Physical exams and blood draws are included in study visits.

Condition or disease Intervention/treatment Phase
Plasmodium Falciparum Malaria Drug: sulfadoxine/pyrimethamine Phase 3

Detailed Description:
Drug-resistant Plasmodium falciparum is a major threat to global public health and new strategies are needed to deter spread of resistance to available and forthcoming antimalarial drugs. This study seeks to contribute to understanding the molecular basis of spread of drug resistance in a setting with low level of sulfadoxine-pyrimethamine (SP) treatment failure. The objectives of this study are to compare the prevalence of dihydrofolate reductase (DHFR) and dihydropteroate synthase (DHPS) point mutations associated with SP resistance before and after SP treatment of uncomplicated Plasmodium falciparum malaria episodes and to measure parasite infectivity to Anopheles mosquitoes of post-treatment gametocytes with and without DHFR and DHPR mutations. Patients with uncomplicated falciparum malaria will receive a standard SP regimen and will be closely followed for 28 days. This study will add new knowledge of the understanding of ways in which resistance is spread and is expected to provide a sound basis for the future clinical evaluation of antimalarial drug combinations designed to prevent transmission of drug-resistance malaria.

Study Type : Interventional  (Clinical Trial)
Enrollment : 150 participants
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: SP Resistance Markers and Falciparum Malaria Transmission
Estimated Primary Completion Date : December 2006
Estimated Study Completion Date : December 2006

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Malaria
U.S. FDA Resources

Information from the National Library of Medicine

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Ages Eligible for Study:   5 Years and older   (Child, Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

Age more than 5 years Positive blood smear for falciparum malaria Informed consent from participant or parent Intention to remain in the study area for at least 4 weeks from the time of enrollment

Exclusion Criteria:

Mixed Plasmodium infection Parasitemia > 10% Hematocrit < 15% Respiratory distress Spontaneous bleeding (from gums, nose, gastrointestinal tract, etc.) Recent seizures or coma Prostration or weakness, so that the patient cannot sit or walk, with no obvious neurological explanation Inability to drink Persistent vomiting History of allergy or adverse reaction to sulfadoxine-pyrimethamine (SP) or sulfa drugs Known pregnancy

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00299247

Malaria Vaccine and Drug Development Center
Cali, Colombia
Universidad del Valle Sede San Fernando
Cali, Colombia
Sponsors and Collaborators
National Institute of Allergy and Infectious Diseases (NIAID) Identifier: NCT00299247     History of Changes
Other Study ID Numbers: 03-246
First Posted: March 6, 2006    Key Record Dates
Last Update Posted: August 27, 2010
Last Verified: January 2010

Keywords provided by National Institute of Allergy and Infectious Diseases (NIAID):
Malaria, Plasmodium falciparum, drug resistance, Colombia

Additional relevant MeSH terms:
Malaria, Falciparum
Protozoan Infections
Parasitic Diseases
Antiprotozoal Agents
Antiparasitic Agents
Anti-Infective Agents
Folic Acid Antagonists
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Anti-Infective Agents, Urinary
Renal Agents