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Studies on the variability of the uptake and effect of drugs and endogenous substances in blood cells

Studies on the variability of the uptake and effect of drugs and endogenous substances in blood cells - VARIABLE

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
DRKS
Registry ID
DRKS00037460
Enrollment
150
Registered
2025-07-24
Start date
2019-02-06
Completion date
Unknown
Last updated
2025-10-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy volunteers

Interventions

Group 1: A maximum of 60 mL of blood is taken once from the healthy volunteers (venous blood sampling).

Sponsors

Institut für Pharmakologie
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 45 Years

Inclusion criteria

Inclusion criteria: 1) Caucasian 2) Written declaration of consent signed and available

Exclusion criteria

Exclusion criteria: 1) known diseases of the hematopoietic system (e.g. blood clotting disorders, vascular diseases, neoplasia of the hematopoietic system) 2) known diseases of the hematopoietic system in 1st degree relatives 3) medication taken within the last week (except oral contraceptives) 4) Blood donation in the last 8 weeks 5) Pregnancy and breastfeeding 6) Known infectious diseases (e.g. hepatitis, HIV) 7) Persons in an active dependent relationship with the study leaders

Design outcomes

Primary

MeasureTime frame
Quantitative analysis of the concentration and distribution of endogenous substances (e.g. serotonin and acylcarnitine) in blood cells.

Secondary

MeasureTime frame
Examination of the influence of the investigated substances on the function of blood cells as well as recording the variability of expression and function of various membrane transporters in healthy volunteers and the identification of potential predictive biomarkers (in particular genetic, epigenetic and metabolic biomarkers).

Countries

Germany

Contacts

Public ContactMladen Vassilev Tzvetkov

Institut für Pharmakologie

mladen.tzvetkov@med.uni-greifswald.de+49 3834 86 5630

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026