SwePub
Sök i LIBRIS databas

  Utökad sökning

onr:"swepub:oai:DiVA.org:uu-493805"
 

Sökning: onr:"swepub:oai:DiVA.org:uu-493805" > Pharmacokinetic/Pha...

  • Chu, Wan-Yu (författare)

Pharmacokinetic/Pharmacodynamic Modelling of Allopurinol, its Active Metabolite Oxypurinol, and Biomarkers Hypoxanthine, Xanthine and Uric Acid in Hypoxic-Ischemic Encephalopathy Neonates

  • Artikel/kapitelEngelska2022

Förlag, utgivningsår, omfång ...

  • 2021-10-07
  • Springer Nature,2022
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:uu-493805
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-493805URI
  • https://doi.org/10.1007/s40262-021-01068-0DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • BACKGROUND: Allopurinol, an xanthine oxidase (XO) inhibitor, is a promising intervention that may provide neuroprotection for neonates with hypoxic-ischemic encephalopathy (HIE). Currently, a double-blind, placebo-controlled study (ALBINO, NCT03162653) is investigating the neuroprotective effect of allopurinol in HIE neonates.OBJECTIVE: The aim of the current study was to establish the pharmacokinetics (PK) of allopurinol and oxypurinol, and the pharmacodynamics (PD) of both compounds on hypoxanthine, xanthine, and uric acid in HIE neonates. The dosage used and the effect of allopurinol in this population, either or not undergoing therapeutic hypothermia (TH), were evaluated.METHODS: Forty-six neonates from the ALBINO study and two historical clinical studies were included. All doses were administered on the first day of life. In the ALBINO study (n = 20), neonates received a first dose of allopurinol 20 mg/kg, and, in the case of TH (n = 13), a second dose of allopurinol 10 mg/kg. In the historical cohorts (n = 26), neonates (all without TH) received two doses of allopurinol 20 mg/kg in total. Allopurinol and oxypurinol population PK, and their effects on inhibiting conversions of hypoxanthine and xanthine to uric acid, were assessed using nonlinear mixed-effects modelling.RESULTS: Allopurinol and oxypurinol PK were described by two sequential one-compartment models with an autoinhibition effect on allopurinol metabolism by oxypurinol. For allopurinol, clearance (CL) was 0.83 L/h (95% confidence interval [CI] 0.62-1.09) and volume of distribution (Vd) was 2.43 L (95% CI 2.25-2.63). For metabolite oxypurinol, CL and Vd relative to a formation fraction (fm) were 0.26 L/h (95% CI 0.23-0.3) and 11 L (95% CI 9.9-12.2), respectively. No difference in allopurinol and oxypurinol CL was found between TH and non-TH patients. The effect of allopurinol and oxypurinol on XO inhibition was described by a turnover model of hypoxanthine with sequential metabolites xanthine and uric acid. The combined allopurinol and oxypurinol concentration at the half-maximal XO inhibition was 0.36 mg/L (95% CI 0.31-0.42).CONCLUSION: The PK and PD of allopurinol, oxypurinol, hypoxanthine, xanthine, and uric acid in neonates with HIE were described. The dosing regimen applied in the ALBINO trial leads to the targeted XO inhibition in neonates treated with or without TH.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Annink, Kim V (författare)
  • Nijstad, A Laura (författare)
  • Maiwald, Christian A (författare)
  • Schroth, Michael (författare)
  • Bakkali, Loubna El (författare)
  • van Bel, Frank (författare)
  • Benders, Manon J N L (författare)
  • van Weissenbruch, Mirjam M (författare)
  • Hagen, Anja (författare)
  • Franz, Axel R (författare)
  • Dorlo, Thomas P. C.,PhD,1983-Department of Pharmacy and Pharmacology, Netherlands Cancer Institute, Amsterdam, The Netherlands(Swepub:uu)thodo249 (författare)
  • Allegaert, Karel (författare)
  • Huitema, Alwin D R (författare)
  • Department of Pharmacy and Pharmacology, Netherlands Cancer Institute, Amsterdam, The Netherlands (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Clinical Pharmacokinetics: Springer Nature61:2, s. 321-3330312-59631179-1926

Internetlänk

Hitta via bibliotek

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy