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Dried blood spot and saliva samples are collected during MDR-TB treatment to measure the drug concentration of levofloxacin. Feasibility of both analytical procedures in a high burdened setting is explored.
Measuring pharmacokinetic variability of anti-tuberculosis (TB) drugs and responding by dose correction will allow individualized treatment to improve microbiological response, curb acquired drug-resistance, protect and extend the efficacy of novel drugs rolled-out to endemic areas (pharmacovigilance), reduce toxicity to patients and lead to treatment duration shortening.
Aims and Objectives:
Implement Dried Blood Spot (DBS) collection for performance of high-performance liquid chromatography (HPLC) to optimize multidrug resistant TB treatment in Tanzania. Simultaneously, provide a proof-of-principle-demonstration that the developed saliva point of care drug assay for measurement of fluoroquinolone concentration works in a field setting.
This will be a phase II prospective diagnostic study among patients from a national referral of MDR-TB in Tanzania. The investigators anticipate recruiting a minimum of 50 study participants to power for the primary aim. Subjects will have a minimum amount of blood and saliva collected for therapeutic drug monitoring and the investigational drug assays respectively. Expected results include agreement of saliva point-of-care and DBS for measurement of fluoroquinolone concentrations in HPLC. Other important findings related to field-testing include the best time for sample collection within the dosing interval and the algorithmic use of DBS and saliva, and clinical - demographic factors such as HIV coinfection, concomitant drugs, and diabetes mellitus that may influence the saliva drug assay results. Performance characteristics (sensitivity, specificity, negative and positive predictive values) of the saliva PoC and DBS will be calculated as a measurement of accuracy with reference to the gold standard.
Kibong'oto infectious diseases hospital
University Medical Center Groningen
Published on BioPortfolio: 2019-10-14T10:28:28-0400
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An ionophorous, polyether antibiotic from Streptomyces chartreusensis. It binds and transports cations across membranes and uncouples oxidative phosphorylation while inhibiting ATPase of rat liver mitochondria. The substance is used mostly as a biochemical tool to study the role of divalent cations in various biological systems.
An organothiophosphate insecticide.
Places where animals are slaughtered and dressed for market.
Shortened forms of written words or phrases used for brevity.
That portion of the body that lies between the THORAX and the PELVIS.
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