Kristine Hole

Kristine Hole
Diakonhjemmet Hospital (Norway) · Center for Psychopharmacology

MSc Pharm PhD

About

14
Publications
567
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73
Citations
Introduction
Kristine Hole currently works as PostDoc at Center for Psychopharmacology, Diakonhjemmet Hospital, and also as Associate Professor at Oslo Metropolitan University. Kristine does research on variation in drug metabolism via CYP3A, and on personalizing treatment of psychoactive drugs.
Additional affiliations
April 2019 - present
Diakonhjemmet Hospital (Norway)
Position
  • Medical Professional
Education
June 2014 - March 2019
University of Oslo
Field of study
  • Clinical pharmacology
August 2008 - June 2013
University of Oslo
Field of study

Publications

Publications (14)
Article
Full-text available
Purpose Variability in cytochrome P450 3A4 (CYP3A4) metabolism is mainly caused by non-genetic factors, hence providing a need for accurate phenotype biomarkers. Although 4β-hydroxycholesterol (4βOHC) is a promising endogenous CYP3A4 biomarker, additional investigations are required to evaluate its ability to predict CYP3A4 activity. This study inv...
Article
It remains uncertain whether pharmacokinetic changes following Roux‐en‐Y gastric bypass (RYGB) can be attributed to surgery‐induced gastrointestinal alterations per se and/or the subsequent weight loss. The aim was to compare short‐ and long‐term effects of RYGB and calorie restriction on CYP3A‐activity, and cross‐sectionally compare CYP3A‐activity...
Article
Purpose: The aim of this study was to investigate the potential dose-dependent CYP2D6 inhibition by bupropion (BUP) in patients with depression. Methods: Patients combining BUP with venlafaxine were included from a therapeutic drug monitoring (TDM) database at the Diakonhjemmet Hospital (Oslo, Norway). The O/N-desmethylvenlafaxine metabolic rati...
Article
Full-text available
Aims: To explore the pharmacodynamics of mycophenolic acid (MPA) through inosine monophosphate dehydrogenase (IMPDH) capacity measurement and purine levels in peripheral blood mononuclear cells (PBMC) longitudinally during the first year after renal transplantation (TX). Methods: PBMC were isolated from renal recipients 0-4 days prior to and 6-9...
Article
4β-Hydroxycholesterol (4βOHC) is an endogenous CYP3A4 metabolite. However, it is unclear whether circulating levels of 4βOHC may reflect hepatic CYP3A4 activity or both hepatic and intestinal enzyme activity. The aim of this study was to investigate the effect of grapefruit juice, regarded to be a selective intestinal CYP3A4 inhibitor, on serum 4βO...
Article
Full-text available
Recent studies have shown that the cytochrome P450 (CYP) 3A phenotype marker 4β‐hydroxycholesterol/cholesterol (4βOHC/C) ratio is negatively correlated with body weight in healthy volunteers, and that obese patients have lower 4βOHC levels than healthy controls. However, 4βOHC/C ratio in underweight patients has yet to be reported. The aim of this...
Article
Background: Enzyme-inducing antiepileptic drugs (EIAEDs) are among the clinically most important inducers of cytochrome P450 (CYP) 3A4, but there is limited evidence regarding the comparative potency of each EIAED in raising CYP3A4 activity. The aim of this study was to estimate CYP3A4-inductive potency of EIAEDs by comparing CYP3A4 activity in pa...
Article
Full-text available
End-stage renal disease (ESRD) impairs drug metabolism via cytochrome P450 (CYP) 3A. However, it is unclear whether CYP3A activity recovers following kidney transplantation. Therefore, the aim of this study was to evaluate the change in CYP3A activity measured as 4β-hydroxycholesterol (4βOHC) concentration after kidney transplantation. In total, da...
Article
Full-text available
Purpose: Individual variability in the endogenous CYP3A metabolite 4β-hydroxycholesterol (4βOHC) is substantial, but to which extent this is determined by genetic and nongenetic factors remains unclear. The aim of the study was to evaluate the explanatory power of candidate genetic variants and key nongenetic factors on individual variability in 4...
Article
Aims: Tacrolimus is a cornerstone in modern immunosuppressive therapy after kidney transplantation. Tacrolimus dosing is challenged by considerable pharmacokinetic variability, both between patients and over time after transplantation, partly due to variability in cytochrome P450 3A (CYP3A) activity. The aim of this study was to assess the value o...

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