Evidence map›Paper›PMID 14638485›Full record

Trial reportAntimicrobial agents and chemotherapy2003

Artemether bioavailability after oral or intramuscular administration in uncomplicated falciparum malaria.

Kamolrat Silamut, Paul N Newton, Paktiya Teja-Isavadharm, Yupin Suputtamongkol, Duangsuda Siriyanonda, Maneerat Rasameesoraj, Sasithon Pukrittayakamee, Nicholas J White

Open access · greenAbstract readClinical TrialRandomized Controlled Trial
In one paragraph

Trial report in Antimicrobial agents and chemotherapy, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
2.7field-weighted citation impact, top 10% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 39 citations in OpenAlex.

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  14. Artemisinins.Postgraduate medical journal · 2005
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 5 institutions in 3 countries.

Kamolrat SilamutFaculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Paul N Newton
Paktiya Teja-Isavadharm
Yupin Suputtamongkol
Duangsuda Siriyanonda
Maneerat Rasameesoraj
Sasithon Pukrittayakamee
Nicholas J White
Armed Forces Research Institute of Medical Science · THJohn Radcliffe Hospital · GBMahidol Oxford Tropical Medicine Research Unit · THMahidol University · THSiriraj Hospital · TH

Funding

Wellcome Trust
6 · The paper itself

Abstract

The antimalarial activity of artemether following oral or intramuscular administration in the plasma of 15 adults with acute uncomplicated Plasmodium falciparum malaria was measured by bioassay. The peak concentrations in plasma following oral administration were higher in patients with acute illness (median, 1,905 mmol of dihydroartemisinin [DHA] equivalents per liter; range, 955 to 3,358 mmol of DHA equivalents per liter) than in patients in the convalescent phase (median, 955 mmol of DHA equivalents per liter; range, 576 to 1,363 mmol of DHA equivalents per liter), and clearance (CL/F) was lower in patients in the acute phase (1.11 liters/kg/h; range, 0.21 to 3.08 liters/kg/h) than in patients in the convalescent phase (median, 2.76 liters/kg/h; range, 1.56 to 5.74 liters/kg/h) (P< or =0.008). Antimalarial activity in terms of the peak concentration in plasma (Cmax) after oral administration was a median of 16 times higher than that after intramuscular administration. The ratio of the area under the plasma concentration-time curve during the first 24 h (AUC(0-24)) after oral administration of artemether to the AUC(0-24) after intramuscular administration was a median of 3.3 (range, 1 to 11) (P=0.0001). In the acute phase, the time to Cmax was significantly shorter after oral administration (median, 1 h; range, 0.5 to 3.0 h) than after intramuscular administration (median, 8 h; range, 4 to 24 h) (P=0.001). Intramuscular artemether is absorbed very slowly in patients with acute malaria.

Indexed as

Administration, OralAdolescentAdultAntimalarialsArea Under CurveArtemetherArtemisininsBiological AssayBiological AvailabilityBiotransformationChloroquineDrug ResistanceFemaleHumansInjections, IntramuscularIntestinal AbsorptionAntimalarialsArtemetherArtemisininsChloroquineQuinineSesquiterpenes

Identifiers

PMID14638485
PMCPMC296187
OpenAlexW2047466881

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.