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2017 ; 7
(ä): 47-56
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Animal models in psychiatric research: The RDoC system as a new framework for
endophenotype-oriented translational neuroscience
#MMPMID28377991
Anderzhanova E
; Kirmeier T
; Wotjak CT
Neurobiol Stress
2017[Dec]; 7
(ä): 47-56
PMID28377991
show ga
The recently proposed Research Domain Criteria (RDoC) system defines
psychopathologies as phenomena of multilevel neurobiological existence and
assigns them to 5 behavioural domains characterizing a brain in action. We
performed an analysis on this contemporary concept of psychopathologies in
respect to a brain phylogeny and biological substrates of psychiatric diseases.
We found that the RDoC system uses biological determinism to explain the
pathogenesis of distinct psychiatric symptoms and emphasises exploration of
endophenotypes but not of complex diseases. Therefore, as a possible framework
for experimental studies it allows one to evade a major challenge of
translational studies of strict disease-to-model correspondence. The system
conforms with the concept of a normality and pathology continuum, therefore,
supports basic studies. The units of analysis of the RDoC system appear as a
novel matrix for model validation. The general regulation and arousal, positive
valence, negative valence, and social interactions behavioural domains of the
RDoC system show basic construct, network, and phenomenological homologies
between human and experimental animals. The nature and complexity of the
cognitive behavioural domain of the RDoC system deserve further clarification.
These homologies in the 4 domains justifies the validity, reliably and
translatability of animal models appearing as endophenotypes of the negative and
positive affect, social interaction and general regulation and arousal systems'
dysfunction.