Page last updated: 2024-11-03

primaquine and Eye Infections, Parasitic

primaquine has been researched along with Eye Infections, Parasitic in 1 studies

Primaquine: An aminoquinoline that is given by mouth to produce a radical cure and prevent relapse of vivax and ovale malarias following treatment with a blood schizontocide. It has also been used to prevent transmission of falciparum malaria by those returning to areas where there is a potential for re-introduction of malaria. Adverse effects include anemias and GI disturbances. (From Martindale, The Extra Pharmacopeia, 30th ed, p404)
primaquine : An N-substituted diamine that is pentane-1,4-diamine substituted by a 6-methoxyquinolin-8-yl group at the N(4) position. It is a drug used in the treatment of malaria and Pneumocystis pneumonia.

Eye Infections, Parasitic: Mild to severe infections of the eye and its adjacent structures (adnexa) by adult or larval protozoan or metazoan parasites.

Research Excerpts

ExcerptRelevanceReference
"Ophthalmic safety observations are reported from a clinical trial comparing tafenoquine (TQ) efficacy and safety versus sequential chloroquine (CQ)/primaquine (PQ) for acute Plasmodium vivax malaria."9.30Comparative ophthalmic assessment of patients receiving tafenoquine or chloroquine/primaquine in a randomized clinical trial for Plasmodium vivax malaria radical cure. ( Euswas, A; Fukuda, MM; Ittiverakul, M; Krudsood, S; Miller, RS; Ohrt, C; Warrasak, S, 2019)
"Ophthalmic safety observations are reported from a clinical trial comparing tafenoquine (TQ) efficacy and safety versus sequential chloroquine (CQ)/primaquine (PQ) for acute Plasmodium vivax malaria."5.30Comparative ophthalmic assessment of patients receiving tafenoquine or chloroquine/primaquine in a randomized clinical trial for Plasmodium vivax malaria radical cure. ( Euswas, A; Fukuda, MM; Ittiverakul, M; Krudsood, S; Miller, RS; Ohrt, C; Warrasak, S, 2019)

Research

Studies (1)

TimeframeStudies, this research(%)All Research%
pre-19900 (0.00)18.7374
1990's0 (0.00)18.2507
2000's0 (0.00)29.6817
2010's1 (100.00)24.3611
2020's0 (0.00)2.80

Authors

AuthorsStudies
Warrasak, S1
Euswas, A1
Fukuda, MM1
Ittiverakul, M1
Miller, RS1
Krudsood, S1
Ohrt, C1

Clinical Trials (3)

Trial Overview

TrialPhaseEnrollmentStudy TypeStart DateStatus
Safety, Tolerability and Pharmacokinetics of Tafenoquine After Weekly and Escalating Monthly Doses of Tafenoquine in Healthy Vietnamese Volunteers[NCT05203744]Phase 4200 participants (Anticipated)Interventional2022-05-10Not yet recruiting
A Randomized, Active-control, Double-blind, Double-dummy Study to Evaluate the Efficacy and Safety of Tafenoquine for the Treatment of Plasmodium Vivax in Adults[NCT01290601]Phase 270 participants (Actual)Interventional2003-09-15Terminated (stopped due to Failure to meet pre-specified endpoint for the day 28 cure rate)
Does Artemisinin Combination Treatment Reduce the Radical Curative Efficacy of High Dose Tafenoquine for Plasmodium Vivax Malaria?[NCT05788094]Phase 4388 participants (Anticipated)Interventional2023-06-26Recruiting
[information is prepared from clinicaltrials.gov, extracted Sep-2024]

Trial Outcomes

Fever Clearance Time (FCT)

Measure of body temperature every 12 hours through day 7 was used to determine the time (to nearest 12 hours) from initiation of treatment until subjects temperature decreased to 37.2C and remained at or below that level for a minimum of 24 hours. (NCT01290601)
Timeframe: through day 7

InterventionHours (Mean)
Cohort 1 Tafenoquine41.5
Cohort 1-Chloroquine24.7

Adequate Clinical Response (ACR) of Tafenoquine: 28 Day Cure Rate

A subject will be considered a success (cure) if they have an Adequate Clinical Response (ACR). Tafenoquine was efficacious if the lower bound of the two-sided 90% confidence interval for the day 28 cure rate was not less than 85% (NCT01290601)
Timeframe: 28 Days

,
InterventionParticipants (Count of Participants)
Adequate Clinical Response (ACR)Early Treatment FailureLate Treatment Failure
Cohort 1 Tafenoquine4051
Cohort 1-Chloroquine2202

Number of Subjects Without Relapse of P. Vivax

"Number of subjects without relapse of P. vivax at 2, 3 and 4 months~- Blood smears were obtained at Days 28, 60, 90 and 120 to confirm the continued absence of P. vivax parasitemia" (NCT01290601)
Timeframe: Day 28, Months 2, 3 and 4

,
Interventionparticipants (Number)
Cleared at Day 28Relapsed by Day 60Relapsed by Day 90Relapsed by Day 120Without Relapse by Day 120Unevaluable by Day 120
Cohort 1 Tafenoquine40000355
Cohort 1-Chloroquine22011192

Parasite and Gametocyte Clearance Time (PCT and GCT)

Serial blood smears to detect the presence of P. vivax parasites and gametocytes, conducted every 12 hours up to and including day 7, until blood smear became negative were utilized to determine the time to clearance. PCT and GCT were considered cleared if 2 consecutive blood smears were negative. (NCT01290601)
Timeframe: up to day 7 after baseline smear

,
InterventionHours (Mean)
Parasite Clearance TimeGametocyte Clearance Time
Cohort 1 Tafenoquine83.448.3
Cohort 1-Chloroquine40.022.7

Safety and Tolerability of Tafenoquine as Defined by Most Common Adverse Events (AEs)

To evaluate the safety and tolerability of the tafenoquine dosing regimens as defined by the most common AE's overall, occurring in >10% of subjects in either treatment group (NCT01290601)
Timeframe: 90 Days

,
InterventionAEs (Number)
Blood methemoglobin presentHeadacheKeratopathyUpper respiratory tract infectionDizzinessRetinopathyEosinophiliaAbdominal painNauseaThrombocytopeniaEosinophil count increasedPyrexia
Cohort 1 Tafenoquine46141413129866655
Cohort 1-Chloroquine2240531753033

Trials

1 trial available for primaquine and Eye Infections, Parasitic

ArticleYear
Comparative ophthalmic assessment of patients receiving tafenoquine or chloroquine/primaquine in a randomized clinical trial for Plasmodium vivax malaria radical cure.
    International ophthalmology, 2019, Volume: 39, Issue:8

    Topics: Adult; Aminoquinolines; Antimalarials; Cornea; Dose-Response Relationship, Drug; Double-Blind Method

2019
Comparative ophthalmic assessment of patients receiving tafenoquine or chloroquine/primaquine in a randomized clinical trial for Plasmodium vivax malaria radical cure.
    International ophthalmology, 2019, Volume: 39, Issue:8

    Topics: Adult; Aminoquinolines; Antimalarials; Cornea; Dose-Response Relationship, Drug; Double-Blind Method

2019
Comparative ophthalmic assessment of patients receiving tafenoquine or chloroquine/primaquine in a randomized clinical trial for Plasmodium vivax malaria radical cure.
    International ophthalmology, 2019, Volume: 39, Issue:8

    Topics: Adult; Aminoquinolines; Antimalarials; Cornea; Dose-Response Relationship, Drug; Double-Blind Method

2019
Comparative ophthalmic assessment of patients receiving tafenoquine or chloroquine/primaquine in a randomized clinical trial for Plasmodium vivax malaria radical cure.
    International ophthalmology, 2019, Volume: 39, Issue:8

    Topics: Adult; Aminoquinolines; Antimalarials; Cornea; Dose-Response Relationship, Drug; Double-Blind Method

2019
Comparative ophthalmic assessment of patients receiving tafenoquine or chloroquine/primaquine in a randomized clinical trial for Plasmodium vivax malaria radical cure.
    International ophthalmology, 2019, Volume: 39, Issue:8

    Topics: Adult; Aminoquinolines; Antimalarials; Cornea; Dose-Response Relationship, Drug; Double-Blind Method

2019
Comparative ophthalmic assessment of patients receiving tafenoquine or chloroquine/primaquine in a randomized clinical trial for Plasmodium vivax malaria radical cure.
    International ophthalmology, 2019, Volume: 39, Issue:8

    Topics: Adult; Aminoquinolines; Antimalarials; Cornea; Dose-Response Relationship, Drug; Double-Blind Method

2019
Comparative ophthalmic assessment of patients receiving tafenoquine or chloroquine/primaquine in a randomized clinical trial for Plasmodium vivax malaria radical cure.
    International ophthalmology, 2019, Volume: 39, Issue:8

    Topics: Adult; Aminoquinolines; Antimalarials; Cornea; Dose-Response Relationship, Drug; Double-Blind Method

2019
Comparative ophthalmic assessment of patients receiving tafenoquine or chloroquine/primaquine in a randomized clinical trial for Plasmodium vivax malaria radical cure.
    International ophthalmology, 2019, Volume: 39, Issue:8

    Topics: Adult; Aminoquinolines; Antimalarials; Cornea; Dose-Response Relationship, Drug; Double-Blind Method

2019
Comparative ophthalmic assessment of patients receiving tafenoquine or chloroquine/primaquine in a randomized clinical trial for Plasmodium vivax malaria radical cure.
    International ophthalmology, 2019, Volume: 39, Issue:8

    Topics: Adult; Aminoquinolines; Antimalarials; Cornea; Dose-Response Relationship, Drug; Double-Blind Method

2019