RecruitingPhase 2ACTRN12612000571875

A randomised phase 2a trial of safety, efficacy, pharmacokinetics and pharmacodynamics of L-Arginine in severe falciparum malaria

A randomised phase 2a trial of safety, efficacy (in improving lactate clearance and endothelial function), pharmacokinetics and pharmacodynamics of L-Arginine in adults with severe falciparum malaria


Sponsor

Menzies School of Health Research

Enrollment

57 participants

Start Date

Jun 24, 2012

Study Type

Interventional

Conditions

Summary

Mortality from severe malaria remains ~15% despite use of the most effective parasiticidal antimalarial therapy, intravenous artesunate. Adjunctive treatments in combination with anti-parasitic agents have the potential to improve outcome. Our overall goal is to determine if adjunctive treatment with L-arginine is safe and improves outcomes in severe malaria. In early phase studies to date, we have shown that L-arginine is safe in moderately severe malaria, increases nitric oxide (NO) production and improves endothelial function. In a pilot study in severe malaria (ARGISM 1 trial; NCT00616304), L-arginine infusion was safe. We now propose to extend these studies to larger numbers of patients with severe malaria to determine the safety, preliminary efficacy, pharmacokinetics and pharmacodynamics of L-arginine infusion in severe malaria.


Eligibility

Sex: Both males and femalesMin Age: 16 YearssMax Age: 60 Yearss

Plain Language Summary

Simplified for easier understanding

This study is testing whether a supplement called L-arginine, given by drip alongside standard anti-malaria treatment, can help reduce deaths and severe complications from falciparum malaria. Severe malaria is a life-threatening condition, and even with the best available treatment about 15% of patients die. L-arginine may help by improving blood vessel function and increasing nitric oxide levels. Participants will receive IV L-arginine or a placebo in addition to their standard malaria treatment. You may be eligible if: - You are between 16 and 60 years old - You have confirmed P. falciparum malaria with one or more signs of severity (such as kidney failure, altered consciousness, high parasite counts, or abnormal blood tests) - You have recently started parenteral anti-malaria treatment (artesunate or quinine) You may NOT be eligible if: - You are pregnant or breastfeeding - You have diabetes - You have serious pre-existing heart, liver, or kidney disease - Your blood pressure is very low even after fluids - Certain blood test values are outside safe ranges (such as very low bicarbonate or very high potassium) - You have a known allergy to L-arginine - You are taking certain medications including spironolactone, nitrates, sildenafil, alpha-blockers, or L-arginine Talk to your doctor about whether this trial might be right for you.

This summary was AI-generated to explain the trial in plain language. It is not medical advice. Always discuss eligibility with your doctor before enrolling in a clinical trial.

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Interventions

intravenous L-arginine in saline commencing within 18 hours of standard therapy: 0.33g/kg (to maximum 20g) over 8 hours. All patients receive standard intravenous artesunate therapy (Artesunate 2.4mg/

intravenous L-arginine in saline commencing within 18 hours of standard therapy: 0.33g/kg (to maximum 20g) over 8 hours. All patients receive standard intravenous artesunate therapy (Artesunate 2.4mg/kg IV then 2.4mg/kg at 12h and 24h then every 24 hours) followed, after minimum of 3 doses, once eating & drinking without vomiting, with oral therapy with artemether/lumefantrine (20/120mg) 4 tabs orally at 0h, 8h then every 12h x 2 more days


Locations(1)

Bangladesh

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ACTRN12612000571875