The DPRA is an in chemico method which quantifies the remaining concentration of cysteine- or lysine-containing peptide following 24 hours incubation with the test chemical at 252.5ºC. The synthetic peptides contain phenylalanine to aid in the detection. Relative peptide concentration

Last updated on: 17-04-2019 - 13:23

Contact: bart Desmedt
Organisation: Sciensano, Sciensano
Partners: Sciensano
Status: History of use, Internally validated, Validated by an external party (e.g. OECD, EURL ECVAM,…)

The monocyte-activation test (MAT) is used to detect or quantify substances that activate human monocytes or monocytic cells to release endogenous mediators such as pro-inflammatory cytokines, for example tumour necrosis factor alpha (TNFα), interleukin-1 beta (IL-1β) and interleukin-6 (IL-6).

Last updated on: 27-03-2019 - 16:50

Contact: Celine Vanhee
Organisation: Sciensano
Status: Still in development, History of use

The Vitotox test is a high-throughput bacterial genotoxicity test. The test is based on bacteria that contain the lux operon of Vibrio fischeri under transcriptional control of the mutated recN promoter, which is controled by the bacterial SOS-system (TA 104-recN2-4 strain or Genox strain) .

Last updated on: 20-03-2019 - 17:34

Contact: Roel Anthonissen
Organisation: Sciensano
Status: History of use

The Alkaline Comet Assay is a microgel electrophoresis technique which allows to measure DNA damage (single and double strand breaks, alkali labile sites, incomplete excision repair sites and cross links) cell by cell. Cells are mixed with 0.8% Low Melting Point Agarose which is spread as a gel

Last updated on: 20-03-2019 - 17:30

Contact: Roel Anthonissen
Organisation: Sciensano
Status: History of use

The in vitro micronucleus test is a genotoxicity test for the detection of micronuclei in the cytoplasm of interphase cells. Micronuclei may originate from acentric chromosome fragments (i.e. lacking a centromere), or whole chromosomes that are unable to migrate to the poles during the anaphase

Last updated on: 20-03-2019 - 17:26

Organisation: Sciensano
Status: Published in peer reviewed journal, Validated by an external party (e.g. OECD, EURL ECVAM,…)

The RT-qPCR assay is used to identify genotoxic and non-genotoxic compounds. Herefore metabolic-competent human HepaRG cells are exposed to the IC10 value (measured by the MTT test). A microassay is performed to select 84 genes that show the most robust rates of correct classification of the

Last updated on: 20-03-2019 - 17:22

Organisation: Sciensano
Partners: Vrije Universiteit Brussel
Status: Internally validated, Published in peer reviewed journal

The Ames test is a short-term bacterial reverse mutation assay specifically designed to detect a wide range of chemical substances that can produce genetic damage that leads to permanent gene mutations. The test employs several histidine dependent Salmonella strains each carrying different

Last updated on: 20-03-2019 - 17:16

Contact: Roel Anthonissen
Organisation: Sciensano
Status: Published in peer reviewed journal, Validated by an external party (e.g. OECD, EURL ECVAM,…)

The neutral red uptake (NRU) assay provides a quantitative measurement of the number of viable cells. The test is based on the ability of living cells to take up and bind neutral red (NR), a dye which easily penetrates cell membranes via non-ionic diffusion. It accumulates in the lysosomes. Dying

Last updated on: 20-03-2019 - 17:11

Contact: Roel Anthonissen
Organisation: Sciensano
Status: History of use