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Daniels S, Horman T, Lapointe T, Melanson B, Storace A, Kennedy SH, Frey BN, Rizvi SJ, Hassel S, Mueller DJ, Parikh SV, Lam RW, Blier P, Farzan F, Giacobbe P, Milev R, Placenza F, Soares CN, Turecki G, Uher R, Leri F. Reverse translation of major depressive disorder symptoms: A framework for the behavioural phenotyping of putative biomarkers. J Affect Disord 2020; 263:353-366. [PMID: 31969265 DOI: 10.1016/j.jad.2019.11.108] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 11/13/2019] [Accepted: 11/22/2019] [Indexed: 02/08/2023]
Abstract
BACKGROUND Reverse translating putative biomarkers of depression from patients to animals is complex because Major Depressive Disorder (MDD) is a highly heterogenous condition. This review proposes an approach to reverse translation based on relating relevant bio-behavioural functions in laboratory rodents to MDD symptoms. METHODS This systematic review outlines symptom clusters assessed by psychometric tests of MDD and antidepressant treatment response including the Montgomery-Åsberg Depression Rating Scale, the Hamilton Depression Rating Scale, and the Beck Depression Inventory. Symptoms were related to relevant behavioural assays in laboratory rodents. RESULTS The resulting battery of tests includes passive coping, anxiety-like behaviours, sleep, caloric intake, cognition, psychomotor functions, hedonic reactivity and aversive learning. These assays are discussed alongside relevant clinical symptoms of MDD, providing a framework through which reverse translation of a biomarker can be interpreted. LIMITATIONS Certain aspects of MDD may not be quantified by tests in laboratory rodents, and their biological significance may not always be of clinical relevance. CONCLUSIONS Using this reverse translation approach, it is possible to clarify the functional significance of a putative biomarker in rodents and hence translate its contribution to specific clinical symptoms, or clusters of symptoms.
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Affiliation(s)
- Stephen Daniels
- Department of Psychology and Neuroscience, University of Guelph, Guelph N1G 2W1, Ontario, Canada
| | - Thomas Horman
- Department of Psychology and Neuroscience, University of Guelph, Guelph N1G 2W1, Ontario, Canada
| | - Thomas Lapointe
- Department of Psychology and Neuroscience, University of Guelph, Guelph N1G 2W1, Ontario, Canada
| | - Brett Melanson
- Department of Psychology and Neuroscience, University of Guelph, Guelph N1G 2W1, Ontario, Canada
| | - Alexandra Storace
- Department of Psychology and Neuroscience, University of Guelph, Guelph N1G 2W1, Ontario, Canada
| | - Sidney H Kennedy
- University of Toronto Health Network, Toronto, Ontario, Canada; St. Michael's Hospital, Toronto, Ontario, Canada
| | | | - Sakina J Rizvi
- University of Toronto Health Network, Toronto, Ontario, Canada; St. Michael's Hospital, Toronto, Ontario, Canada
| | | | - Daniel J Mueller
- The Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | | | - Raymond W Lam
- The University of British Columbia, Vancouver, British Columbia, Canada
| | - Pierre Blier
- The Royal Institute of Mental Health Research, Ottawa, Ontario, Canada
| | - Faranak Farzan
- Simon Fraser University, Burnaby, British Columbia, Canada
| | - Peter Giacobbe
- University of Toronto Health Network, Toronto, Ontario, Canada
| | | | - Franca Placenza
- University of Toronto Health Network, Toronto, Ontario, Canada
| | | | | | - Rudolf Uher
- Dalhousie University, Halifax, Nova Scotia, Canada
| | - Francesco Leri
- Department of Psychology and Neuroscience, University of Guelph, Guelph N1G 2W1, Ontario, Canada.
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Abstract
The basic consideration in the field of antidepressants is that tests to model depression do not exist, as depression etiopathology is unknown. So far, any kind of proposed model for depression needs to satisfy construct, face and predictive validities. In the present editorial, this idea is challenged, based on the fact that “old” methods can only reveal therapeutical “me-too” drugs and that there is no longer a need of therapeutical “me-too” drugs in the field of antidepressants. Since reduction in the number of antidepressant non-responders is a real medical need, the predictive validity of animal models will be challenged in the future, as the new methods should be based on antidepressant-insensitive animals. Moreover, antidepressants exert similar effects in depressed and non-depressed subjects, but mood normalization is only induced in depressed patients. This implies that the use of normal cells and animals only involves pharmacological rather than therapeutical actions of drugs. Therefore, the use of environmental-induced changes, in the hope that these can evidence antidepressant-insensitive animals, will predominantly be used in the future. In the choice of experimental settings, other factors need to be taken into consideration: (1) gender of animals, as depression affects females more than males, (2) natural rhythmicity in drug effects; (3) pharmacokinetics; and (4) possible biomarker(s) to be measured. There are no golden recipes to discover new antidepressants but the experimental long-term strategy should very clearly be declared before starting the experiments.
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Zhukov DA, Vinogradova KP. Learned helplessness or learned inactivity after inescapable stress? Interpretation depends on coping styles. Integr Psychol Behav Sci 2002; 37:35-43. [PMID: 12069363 DOI: 10.1007/bf02688804] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Researches on uncontrollable events in the post-soviet states are overviewed. In our research, susceptibility to learned helplessness is studied in rats with active (KHA strain) versus passive (KLA strain) coping styles. Inescapable footshocks, but not escapable footshocks, applied to KHA rats induced escape failures, diminished locomotion and coping, reduced measures of anxiety, and resulted in dexamethasone nonsuppression of the brain-hypothalamus-pituitary-adrenal axis--all characteristic of learned helplessness. In contrast, KLA rats demonstrated the same responses upon exposure to both escapable and inescapable stresses. While learned helplessness occurred in KHA rats, it appears that KLA rats exposed to inescapable stress demonstrated learned inactivity based upon the nondifference between effects of escapable and inescapable shocks. Relationships between coping styles and social ranks are discussed. Our and other's results with genetically selected strains suggest active coping in dominant and subordinate subjects, and passive coping in subdominant animals confirm the importance of coping style and its relation to health under stress.
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Affiliation(s)
- D A Zhukov
- Pavlov Institute of Physiology, St Petersburg, Russia.
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Lehmann J, Weizman R, Pryce CR, Leschiner S, Allmann I, Feldon J, Gavish M. Peripheral benzodiazepine receptors in cerebral cortex, but not in internal organs, are increased following inescapable stress and subsequent avoidance/escape shuttle-box testing. Brain Res 1999; 851:141-7. [PMID: 10642837 DOI: 10.1016/s0006-8993(99)02160-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Stress-induced alterations in peripheral benzodiazepine receptor (PBR) density have been reported in humans and in rats. However, the PBR response is highly specific, and its function remains largely unexplained. The aim of the present study was to investigate the relationship between behavior in the two-way active avoidance paradigm (2WAA) and post-test PBR densities in adrenal, testis, kidney, and cerebral cortex. Adult male Wistar rats were tested in the 2WAA either in the naive state (AA) or 24 h following shock preexposure (PE), known to interfere with avoidance/escape response acquisition, and decapitated immediately after testing. Control subjects were decapitated without experimental experience. The stressful characteristic of the experiment was validated by significantly increased post-test corticosterone levels in AA and PE subjects compared with controls, with a trend towards higher corticosterone levels in PE relative to AA rats. Similarly, PE compared with AA subjects tended to show retarded acquisition of the escape/avoidance response. PBR densities in adrenal, kidney, and testis and central benzodiazepine receptors (CBR) in the cerebral cortex remained unaffected by avoidance testing. Cerebral cortex PBR density was significantly increased in PE subjects. These findings suggest that avoidance testing, although stressful to the animals, led to changes confined to cerebral cortex PBR, indicating that the hypothalamic-pituitary-adrenal (HPA) response occurs independently of the PBR response in peripheral organs, and also suggest that the opportunity for coping alters the impact of the stressor on the subject and prevents the expression of PBR response in peripheral organs.
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Affiliation(s)
- J Lehmann
- Laboratory of Behavioural Biology, Swiss Federal Institute of Technology, Schwerzenbach, Switzerland
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Zhukov DA, Vinogradova EP. Agonistic behavior during stress prevents the development of learned helplessness in rats. NEUROSCIENCE AND BEHAVIORAL PHYSIOLOGY 1998; 28:206-10. [PMID: 9604225 DOI: 10.1007/bf02461969] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Male Wistar rats were subjected to unavoidable electrical pain stimulation either in individual cages or in pairs. During the procedure, rats stressed in pairs fought. After 48 h, rats were tested in a shuttle box for the ability to develop active avoidance responses. The proportion of escape and avoidance responses was significantly lower in rats stressed individually as compared with intact animals and animals stressed in pairs. Plasma corticosterone was assayed one day later, at rest and after dexamethasone administration. There were no significant differences in resting corticosterone level between groups of animals. Administration of dexamethasone significantly reduced the plasma corticosterone level in intact rats and in animals stressed in pairs, but not in rats stressed individually. Thus, agonistic behavior during unavoidable stress prevents the development of pathological changes in adaptive behavior and the endocrine system.
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Affiliation(s)
- D A Zhukov
- I. P. Pavlov Institute of Physiology, Russian Academy of Sciences, St. Petersburg, Russia
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Ordyan NE, Zhukov DA. Effects of controllable and uncontrollable stresses on the receptor binding of dexamethasone in the hypophysis and hippocampus of rats with different behavior strategies. NEUROSCIENCE AND BEHAVIORAL PHYSIOLOGY 1998; 28:22-5. [PMID: 9513973 DOI: 10.1007/bf02461907] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The effects of controllable and uncontrollable stress on the receptor binding of dexamethasone in the hypophysis and hippocampus were studied in KHA and KLA rats, lines selected for the ability to development of active escape. Presentation of the controllable stimulus led to a significant reduction in receptor binding of dexamethasone in the hippocampus with significant changes in the plasma corticosterone concentration and receptor binding in the hypophysis. KLA rats were sensitive both to the controllable and the uncontrollable stresses, with increases in plasma corticosterone and receptor binding of dexamethasone in the hypophysis. It is concluded that receptor binding of dexamethasone in the hippocampus and hypophysis depend not only on the behavioral strategy of the animal, but also on the possibility of controlling the situation.
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Affiliation(s)
- N E Ordyan
- Laboratory of Endocrine System Physiology and Pathology, I. P. Pavlov Institute of Physiology, Russian Academy of Sciences, St. Petersburg
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Zhukov DA, Vinogradova KP. Inescapable shock induces the opposite changes of the plus-maze test behavior in rats with divergent coping strategy. Physiol Behav 1994; 56:1075-9. [PMID: 7824574 DOI: 10.1016/0031-9384(94)90346-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Behavior in the elevated plus-maze and plasma corticosterone levels were investigated in Koltushi high-avoidance (KHA) and low-avoidance (KLA) rat strains subjected to inescapable shock (IS) or daily handling for 10 days. These strains have been genetically selected on the basis of divergent acquisition of a conditioned avoidance response in a two-way shuttle-box. Naive KHA rats were more anxious than KLA ones. Following exposure to IS, the time spent in open arms was increased in KHA rats but decreased in KLA rats. After handling, the time spent in open arms increased only in KHA rats and became similar in both strains. There were no differences in plasma corticosterone levels between naive animals. Exposure to either IS or handling increased the plasma corticosterone levels in KLA rats. In KHA rats, handling reduced the plasma corticosterone levels, and exposure to IS had no effect. The present results suggest that the stress-induced changes in anxiety levels depend on the coping strategy of the subject.
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Affiliation(s)
- D A Zhukov
- Pavlov Institute of Physiology, Russian Academy of Sciences, St. Petersburg
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