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Dettmer AM, Chusyd DE. Early life adversities and lifelong health outcomes: A review of the literature on large, social, long-lived nonhuman mammals. Neurosci Biobehav Rev 2023; 152:105297. [PMID: 37391110 PMCID: PMC10529948 DOI: 10.1016/j.neubiorev.2023.105297] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 06/22/2023] [Accepted: 06/26/2023] [Indexed: 07/02/2023]
Abstract
Social nonhuman animals are powerful models for studying underlying factors related to lifelong health outcomes following early life adversities (ELAs). ELAs can be linked to lifelong health outcomes depending on the species, system, sensitive developmental periods, and biological pathways. This review focuses on the literature surrounding ELAs and lifelong health outcomes in large, social, relatively long-lived nonhuman mammals including nonhuman primates, canids, hyenas, elephants, ungulates, and cetaceans. These mammals, like humans but unlike the most-studied rodent models, have longer life histories, complex social structures, larger brains, and comparable stress and reproductive physiology. Collectively, these features make them compelling models for comparative aging research. We review studies of caregiver, social, and ecological ELAs, often in tandem, in these mammals. We consider experimental and observational studies and what each has contributed to our knowledge of health across the lifespan. We demonstrate the continued and expanded need for comparative research to inform about the social determinants of health and aging in both humans and nonhuman animals.
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Affiliation(s)
- Amanda M Dettmer
- Yale Child Study Center, Yale School of Medicine, 230 S. Frontage Rd., New Haven, CT, USA.
| | - Daniella E Chusyd
- Department of Environmental and Occupational Health, Indiana University Bloomington, 1025 E. 7th St., Bloomington, IN, USA; Department of Health and Wellness Design, Indiana University Bloomington, 1025 E. 7th St., Bloomington, IN, USA
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Shevelev OB, Tseilikman VE, Khotskin NV, Khotskina АS, Kontsevaya GV, Lapshin MS, Moshkin MP, Komelkova MV, Feklicheva IV, Tseilikman OB, Manukhina EB, Downey HF, Zavjalov EL. Anxiety and neurometabolite levels in the hippocampus and amygdala after prolonged exposure to predator-scent stress. Vavilovskii Zhurnal Genet Selektsii 2019. [DOI: 10.18699/vj19.528] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Here, to study the relationship between anxiety levels with changes in the neurometabolic profile in the hippocampus and amygdala, an experimental predator stress model was reproduced in which Sprague-Dawley rats were exposed to cat urine for 10 minutes on a daily basis for 10 days. At the time of presentation of the stimulus, an online survey of behavioral reactions was conducted. Fear, aggressiveness, avoidance of stimulus and grooming were recorded. Fourteen days after the completion of the last stress exposure, the total level of anxiety was determined in the test of the“cross maze”. Using the method of in vivo NMR spectroscopy, the content of neurometabolites was determined in the hippocampus and in the amygdala. According to the peculiarities of behavioral reactions to a stressor, animals were retrospectively divided into two phenotypes. The first phenotype used a passive behavioral strategy, and the second phenotype was active. In animals of the first phenotype, the indicators of anxiety behavior remained at the control level. In animals of the second phenotype, a decrease in anxiety was observed. Animals of the second phenotype showed elevated levels of lactate in the hippocampus compared to animals of the first phenotype, and the lowest N-acetylaspartate levels significantly differed from those in the control and the first phenotype animals. In the amygdala, in animals of the second phenotype, the content of taurine is sharply reduced in comparison with those in the control and the animals of the first phenotype. Thus, the results obtained indicate a relationship of post-stress changes in anxiety, with the peculiarities of the behavioral reactions presented at the moment of the immediate action of the stressor. Among the hippocampal and amygdala neurometabolites, the most informative for the characterization of the anxiolytic action of the predator stress are identified.
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Affiliation(s)
| | | | | | | | | | - M. S. Lapshin
- South Ural State University (National Research University)
| | | | | | | | | | - E. B. Manukhina
- South Ural State University (National Research University);
Institute of General Pathology and Pathophysiology;
University of North Texas Health Science Center
| | - H. F Downey
- University of North Texas Health Science Center
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3
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Coplan JD, Lu D, El Sehamy AM, Tang C, Jackowski AP, Abdallah CG, Nemeroff CB, Owens MJ, Mathew SJ, Gorman JM. Early Life Stress Associated With Increased Striatal N-Acetyl-Aspartate: Cerebrospinal Fluid Corticotropin-Releasing Factor Concentrations, Hippocampal Volume, Body Mass and Behavioral Correlates. ACTA ACUST UNITED AC 2018; 2. [PMID: 29963652 PMCID: PMC6020138 DOI: 10.1177/2470547018768450] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction Using proton magnetic resonance spectroscopy imaging, the effects of early
life stress on nonhuman primate striatal neuronal integrity were examined as
reflected by N-acetyl aspartate (NAA) concentrations. NAA
measures were interrogated through examining their relationship to
previously documented early life stress markers—cerebrospinal fluid
corticotropin-releasing factor concentrations, hippocampal volume, body
mass, and behavioral timidity. Rodent models of depression exhibit increases
in neurotrophic effects in the nucleus accumbens. We hypothesized that
rearing under conditions of early life stress (variable foraging demand,
VFD) would produce persistent elevations of NAA concentrations (in absolute
or ratio form) in ventral striatum/caudate nucleus (VS/CN) with altered
correlation to early life stress markers. Methods Eleven bonnet macaque males reared under VFD conditions and seven age-matched
control subjects underwent proton magnetic resonance spectroscopy imaging
during young adulthood. Voxels were placed over VS/CN to capture nucleus
accumbens. Cisternal cerebrospinal fluid corticotropin-releasing factor
concentrations, hippocampal volume, body mass, and response to a human
intruder had been previously determined. Results VFD-reared monkeys exhibited significantly increased NAA/creatine
concentrations in right VS/CN in comparison to normally reared controls,
controlling for multiple comparisons. In comparison to controls, VFD
cerebrospinal fluid corticotropin-releasing factor concentrations were
directly associated with right VS/CN absolute NAA. Left hippocampal volume
was inversely associated with left VS/CN NAA/creatine in VFD reared but not
in controls. Disruption of a normative inverse correlation between left
VS/CN NAA and body mass was noted in VFD. Only non-VFD subjects exhibited a
direct relationship between timidity response to an intruder and right VS/CN
NAA. Conclusion Early life stress produced persistent increases in VS/CN NAA, which
demonstrated specific patterns of association (or lack thereof) to early
life stress markers in comparison to non-VFD subjects. The data are broadly
consistent with a stable nonhuman primate phenotype of anxiety and mood
disorder vulnerability whereby in vivo indicators of neuronal integrity,
although reduced in hippocampus, are increased in striatum. The findings may
provide a catalyst for further studies in humans and other species regarding
a reciprocal hippocampal/nucleus accumbens relationship in affective
disorders.
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Affiliation(s)
- Jeremy D Coplan
- Department of Psychiatry & Behavioral Sciences, State University of New York Downstate Medical Center, Brooklyn, NY
| | - Dunyue Lu
- McLaren Behavioral Health Services, Flint Township, MI, USA
| | | | - Cheuk Tang
- Departments of Psychiatry, Neuroscience, and Radiology, Mount Sinai School of Medicine, New York, NY, USA
| | | | - Chadi G Abdallah
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Charles B Nemeroff
- Department of Psychiatry and Behavioral Sciences, University of Miami Health Systems, Miami, NY, USA
| | - Michael J Owens
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta GA, USA
| | - Sanjay J Mathew
- Mental Health Care Line, Michael E. Debakey VA Medical Center, Houston, TX, USA; Menninger Department of Psychiatry & Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA
| | - Jack M Gorman
- Franklin Behavioral Health Care Consultants and Critica LLC, Bronx, New York, USA
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Yin X, Chen L, Xia Y, Cheng Q, Yuan J, Yang Y, Wang Z, Wang H, Dong J, Ding Y, Zhao X. Maternal Deprivation Influences Pup Ultrasonic Vocalizations of C57BL/6J Mice. PLoS One 2016; 11:e0160409. [PMID: 27552099 PMCID: PMC4994965 DOI: 10.1371/journal.pone.0160409] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Accepted: 07/14/2016] [Indexed: 11/18/2022] Open
Abstract
Maternal deprivation (MD) is frequently used as an early life stress model in rodents to investigate behavioral and neurological responses under stressful conditions. However, the effect of MD on the early postnatal development of rodents, which is when multiple neural systems become established, is rarely investigated due to methodological limitations. Ultrasonic vocalizations (USVs) are one of the few responses produced by neonatal rodents that can be quantitatively analyzed, and the quantification of USVs is regarded as a novel approach to investigate possible alterations in the neurobehavioral and emotional development of infant rodents under stress. To investigate the effect of MD on pup mice, we subjected C57BL/6J mice to MD and recorded the USVs of pups on postnatal days 1, 3, 7, 8, and 14. To determine whether the effect of MD on USVs was acute or cumulative, pre- and post-separation USV groups were included; sex differences in pup USV emission were also investigated. Our results suggest that (i) USV activity was high on postnatal days 3-8; (ii) the MD effect on USVs was acute, and a cumulative effect was not found; (iii) the MD mice vocalized more and longer than the controls at a lower frequency, and the effect was closely related to age; and (iv) female pups were more susceptible than males to the effect of MD on USV number and duration between postnatal days 3-8.
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Affiliation(s)
- Xiaowen Yin
- Department of Psychosomatic Medicine, East Hospital, Tongji University School of Medicine, Shanghai, China
- Key Laboratory of Arrhythmias, Ministry of Education, East Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Psychiatry, The Seventh Hospital of HangZhou, Zhejiang, China
| | - Ling Chen
- Key Laboratory of Arrhythmias, Ministry of Education, East Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Anatomy and Neurobiology, Tongji University School of Medicine, Shanghai, China
| | - Yong Xia
- Department of Psychiatry, The Seventh Hospital of HangZhou, Zhejiang, China
| | - Qunkang Cheng
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, Tennessee, United States of America
| | - Jiabei Yuan
- Department of Psychosomatic Medicine, East Hospital, Tongji University School of Medicine, Shanghai, China
- Key Laboratory of Arrhythmias, Ministry of Education, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yan Yang
- Department of Psychiatry, The Seventh Hospital of HangZhou, Zhejiang, China
| | - Zhaoxin Wang
- Department of Psychosomatic Medicine, East Hospital, Tongji University School of Medicine, Shanghai, China
- Key Laboratory of Arrhythmias, Ministry of Education, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Haojie Wang
- Department of Psychosomatic Medicine, East Hospital, Tongji University School of Medicine, Shanghai, China
- Key Laboratory of Arrhythmias, Ministry of Education, East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jianshu Dong
- Shanghai Health Education Institute, Shanghai, China
| | - Yuqiang Ding
- Key Laboratory of Arrhythmias, Ministry of Education, East Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Anatomy and Neurobiology, Tongji University School of Medicine, Shanghai, China
- * E-mail: (YQD); (XDZ)
| | - Xudong Zhao
- Department of Psychosomatic Medicine, East Hospital, Tongji University School of Medicine, Shanghai, China
- Key Laboratory of Arrhythmias, Ministry of Education, East Hospital, Tongji University School of Medicine, Shanghai, China
- * E-mail: (YQD); (XDZ)
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Holschneider DP, Guo Y, Mayer EA, Wang Z. Early life stress elicits visceral hyperalgesia and functional reorganization of pain circuits in adult rats. Neurobiol Stress 2016; 3:8-22. [PMID: 26751119 PMCID: PMC4700548 DOI: 10.1016/j.ynstr.2015.12.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Early life stress (ELS) is a risk factor for developing functional gastrointestinal disorders, and has been proposed to be related to a central amplification of sensory input and resultant visceral hyperalgesia. We sought to characterize ELS-related changes in functional brain responses during acute noxious visceral stimulation. Neonatal rats (males/females) were exposed to limited bedding (ELS) or standard bedding (controls) on postnatal days 2–9. Age 10–11 weeks, animals were implanted with venous cannulas and transmitters for abdominal electromyography (EMG). Cerebral blood flow (rCBF) was mapped during colorectal distension (CRD) using [14C]-iodoantipyrine autoradiography, and analyzed in three-dimensionally reconstructed brains by statistical parametric mapping and functional connectivity. EMG responses to CRD were increased after ELS, with no evidence of a sex difference. ELS rats compared to controls showed a greater significant positive correlation of EMG with amygdalar rCBF. Factorial analysis revealed a significant main effect of ‘ELS’ on functional activation of nodes within the pain pathway (somatosensory, insular, cingulate and prefrontal cortices, locus coeruleus/lateral parabrachial n. [LC/LPB], periaqueductal gray, sensory thalamus), as well as in the amygdala, hippocampus and hypothalamus. In addition, ELS resulted in an increase in the number of significant functional connections (i.e. degree centrality) between regions within the pain circuit, including the amygdala, LC/LPB, insula, anterior ventral cingulate, posterior cingulate (retrosplenium), and stria terminalis, with decreases noted in the sensory thalamus and the hippocampus. Sex differences in rCBF were less broadly expressed, with significant differences noted at the level of the cortex, amygdala, dorsal hippocampus, raphe, sensory thalamus, and caudate-putamen. ELS showed a sexually dimorphic effect (‘Sex x ELS’ interaction) at the LC/LPB complex, globus pallidus, hypothalamus, raphe, septum, caudate-putamen and cerebellum. Our results suggest that ELS alters functional activation of the thalamo-cortico-amydala pathway, as well as the emotional-arousal network (amygdala, locus coeruleus), with evidence that ELS may additionally show sexually dimorphic effects on brain function. Early life stress (ELS) elicits visceral hyperalgesia in adult offspring. ELS alters functional activation of the thalamo-cortico-amydala pathway. ELS shows a sexually dimorphic effects on brain function. Functional imaging-based endpoints promise improved animal-to-human translation.
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Affiliation(s)
- D P Holschneider
- Department of Psychiatry and Behavioral Sciences, University of Southern California, Los Angeles, CA, USA; Departments of Neurology, Cell and Neurobiology, Biomedical Engineering, University of Southern California, Los Angeles, CA, USA; Center for Neurobiology of Stress, Department of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Y Guo
- Department of Psychiatry and Behavioral Sciences, University of Southern California, Los Angeles, CA, USA
| | - E A Mayer
- Veterans Administration Greater Los Angeles Healthcare System, Los Angeles, California, United States of America; Center for Neurobiology of Stress, Department of Medicine, University of California Los Angeles, Los Angeles, California, USA; Departments of Physiology, Psychiatry and Biobehavioral Sciences, University of California Los Angeles, Los Angeles, California, USA
| | - Z Wang
- Department of Psychiatry and Behavioral Sciences, University of Southern California, Los Angeles, CA, USA; Center for Neurobiology of Stress, Department of Medicine, University of California Los Angeles, Los Angeles, California, USA
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Milrod B, Altemus M, Gross C, Busch F, Silver G, Christos P, Stieber J, Schneier F. Adult separation anxiety in treatment nonresponders with anxiety disorders: delineation of the syndrome and exploration of attachment-based psychotherapy and biomarkers. Compr Psychiatry 2016; 66:139-45. [PMID: 26995247 PMCID: PMC8363051 DOI: 10.1016/j.comppsych.2016.01.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 01/06/2016] [Accepted: 01/11/2016] [Indexed: 01/01/2023] Open
Abstract
Clinically significant separation anxiety [SA] has been identified as being common among patients who do not respond to psychiatric interventions, regardless of intervention type (pharmacological or psychotherapeutic), across anxiety and mood disorders. An attachment formation and maintenance domain has been proposed as contributing to anxiety disorders. We therefore directly determined prevalence of SA in a population of adult treatment non-responders suffering from primary anxiety. In these separation anxious nonresponders, we pilot-tested an SA-focused, attachment-based psychotherapy for anxiety, Panic-Focused Psychodynamic Psychotherapy-eXtended Range [PFPP-XR], and assessed whether hypothesized biomarkers of attachment were engaged. We studied separation anxiety [SA] in 46 adults (ages 23-70 [mean 43.9 (14.9)]) with clinically significant anxiety symptoms (Hamilton Anxiety Rating Scale [HARS]≥15), and reporting a history of past non-response to psychotherapy and/or medication treatments. Thirty-seven (80%) had clinically significant symptoms of separation anxiety (Structured Clinical Interview for Separation Anxiety Symptoms [SCI-SAS] score≥8). Five of these subjects completed an open clinical trial of Panic Focused Psychodynamic Psychotherapy eXtended Range [PFPP-XR], a 21-24 session, 12-week manualized attachment-focused anxiolytic psychodynamic psychotherapy for anxiety. Patients improved on "adult threshold" SCI-SAS (current separation anxiety) (p=.016), HARS (p=0.002), and global severity, assessed by the Clinical Global Impression Scale (p=.0006), at treatment termination. Salivary oxytocin levels decreased 67% after treatment (p=.12). There was no significant change in high or low frequency HRV after treatment, but change in high frequency HRV inversely correlated with treatment change in oxytocin (p<.02), and change in low frequency HRV was positively associated with change in oxytocin (p<.02). SA is surprisingly prevalent among non-responders to standard anti-anxiety treatments, and it may represent a novel transdiagnostic target for treatment intervention in this population. Anxiety and global function improved in a small trial of a brief, manualized, attachment-focused psychodynamic psychotherapy, potentially supporting the clinical relevance of attachment dysfunction in this sample. The large decrease in oxytocin levels with treatment, although not statistically significant in this very small sample, suggests the need for further study of oxytocin as a putative biomarker or mediator of SA response. These pilot data generate testable hypotheses supporting an attachment domain underlying treatment-resistant anxiety, and new treatment strategies.
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Affiliation(s)
- Barbara Milrod
- Weill Cornell Medical College, 525 East 68(th) Street, NY 10065, USA.
| | - Margaret Altemus
- Weill Cornell Medical College, 525 East 68(th) Street, NY 10065, USA
| | - Charles Gross
- Weill Cornell Medical College, 525 East 68(th) Street, NY 10065, USA
| | - Fredric Busch
- Weill Cornell Medical College, 525 East 68(th) Street, NY 10065, USA
| | - Gabrielle Silver
- Weill Cornell Medical College, 525 East 68(th) Street, NY 10065, USA
| | - Paul Christos
- Weill Cornell Medical College, 525 East 68(th) Street, NY 10065, USA
| | - Joshua Stieber
- Weill Cornell Medical College, 525 East 68(th) Street, NY 10065, USA
| | - Franklin Schneier
- Weill Cornell Medical College, 525 East 68(th) Street, NY 10065, USA
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Raparia E, Coplan JD, Abdallah CG, Hof PR, Mao X, Mathew SJ, Shungu DC. Impact of childhood emotional abuse on neocortical neurometabolites and complex emotional processing in patients with generalized anxiety disorder. J Affect Disord 2016; 190:414-423. [PMID: 26551399 DOI: 10.1016/j.jad.2015.09.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 09/05/2015] [Accepted: 09/10/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND The rostral prefrontal cortex (RPFC) is involved in reflective thought processes such as self-knowledge and person perception. We hypothesized that childhood emotional abuse, which is disruptive of emotional regulation, would differentially impact neurometabolite concentrations of the RPFC, and related neocortical areas, in adults with generalized anxiety disorder (GAD) versus healthy controls. METHODS GAD patients (n=16; females=11) and medically healthy volunteers (n=16; F=10) were assessed using the Childhood Trauma Questionnaire (CTQ), specifically the emotional abuse category. Proton magnetic resonance spectroscopy imaging examined 3 regions of interest (ROI) from the most rostral slice from the Duyn et al. (1993) multivoxel imaging modality: rostral prefrontal cortex (BA 10,9), premotor cortex (BA 6,8) and secondary somatosensory and associated parietal cortex (BA 5,7). Metabolites included N-acetyl-aspartate, creatine, and choline. RESULTS GAD patients reported higher emotional abuse scores versus controls. An omnibus general linear model including 3 ROI, 3 metabolites, and laterality as dependent variables revealed a significant diagnosis by CTQ emotional abuse score interactive effect. In controls, all 3 ROI for all 3 metabolites on both sides demonstrated a significant inverse relationship with emotional abuse scores; none were significant in GAD patients. LIMITATIONS A major limitation is the uneven distribution of emotional abuse scores between the controls and GAD patients, with GAD patients reporting higher scores. CONCLUSION Unlike controls, GAD patients appear compromised in forming a molecular representation reflective of magnitude of childhood emotional abuse. The neurometabolites in GAD patients appear non-aligned to childhood emotional abuse, suggesting potential consequences for normative "theory of mind" processes and emotional function in certain anxiety disorders.
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Affiliation(s)
- Eva Raparia
- College of Medicine, State University of New York Downstate Medical Center, Brooklyn, NY, USA.
| | - Jeremy D Coplan
- Department of Psychiatry & Behavioral Sciences, State University of New York, Downstate Medical Center, Brooklyn, NY, USA
| | - Chadi G Abdallah
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Patrick R Hof
- Fishberg Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Xiangling Mao
- Departments of Radiology, Psychiatry and Biophysics, Weill Medical College of Cornell University, New York, NY, USA
| | - Sanjay J Mathew
- Mental Health Care Line, Michael E. Debakey VA Medical Center, Houston, TX, USA; Menninger Department of Psychiatry, Baylor College of Medicine, Houston, TX, USA
| | - Dikoma C Shungu
- Departments of Radiology, Psychiatry and Biophysics, Weill Medical College of Cornell University, New York, NY, USA
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8
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Affiliation(s)
- Barbara Milrod
- Department of Psychiatry, Weill Medical College of Cornell
University, New York
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9
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Abdallah CG, Salas R, Jackowski A, Baldwin P, Sato JR, Mathew SJ. Hippocampal volume and the rapid antidepressant effect of ketamine. J Psychopharmacol 2015; 29:591-5. [PMID: 25122038 PMCID: PMC4852551 DOI: 10.1177/0269881114544776] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Accumulating evidence underscores the utility of ketamine in treating severely treatment-resistant depressed patients. We investigated the relationship between the rapid antidepressant effects of ketamine and hippocampal volume, a biomarker of antidepressant treatment outcome. We gave 16 medication-free, major depressive disorder (MDD) patients a single, sub-anesthetic dose infusion of ketamine (0.5 mg/kg, over 40 min). We assessed depression severity pre-treatment, and at 24 h post-treatment, with the Montgomery-Åsberg Depression Rating Scale (MADRS). Prior to treatment, patients underwent magnetic resonance imaging (MRI) to estimate their hippocampal volume: We obtained viable MRI data in 13 patients. Delta MADRS (post- minus pre-treatment) was significantly correlated with the pre-treatment volumes of the left hippocampus (r = 0.66; p = 0.01), but not the right hippocampus (r = 0.49; p = 0.09). The correlation between delta MADRS and the left hippocampus remained high (r > 0.6; p = 0.13), after controlling for several demographic and clinical variables, although the p value increased due to the reduced degree of freedom (df = 5). Ketamine exerts enhanced antidepressant effects in patients with a relatively smaller hippocampus, a patient population that has been repeatedly shown to be refractory to traditional antidepressants.
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Affiliation(s)
- Chadi G. Abdallah
- Clinical Neuroscience Division, National Center for PTSD, West Haven, CT, USA,Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Ramiro Salas
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA
| | - Andrea Jackowski
- LiNC, Departamento de Psiquiatria, Universidade Federal de Sao Paulo, SP, Brazil
| | - Philip Baldwin
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA
| | - Joao R. Sato
- LiNC, Departamento de Psiquiatria, Universidade Federal de Sao Paulo, SP, Brazil,Center of Mathematics, Computation and Cognition. Universidade Federal do ABC, Santo Andre, Brazil
| | - Sanjay J. Mathew
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA,Mental Health Care Line, Michael E. Debakey VA Medical Center, Houston, TX
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Meyer JS, Hamel AF. Models of stress in nonhuman primates and their relevance for human psychopathology and endocrine dysfunction. ILAR J 2014; 55:347-60. [PMID: 25225311 PMCID: PMC4240440 DOI: 10.1093/ilar/ilu023] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Stressful life events have been linked to the onset of severe psychopathology and endocrine dysfunction in many patients. Moreover, vulnerability to the later development of such disorders can be increased by stress or adversity during development (e.g., childhood neglect, abuse, or trauma). This review discusses the methodological features and results of various models of stress in nonhuman primates in the context of their potential relevance for human psychopathology and endocrine dysfunction, particularly mood disorders and dysregulation of the hypothalamic-pituitary-adrenocortical (HPA) system. Such models have typically examined the effects of stress on the animals' behavior, endocrine function (primarily the HPA and hypothalamic-pituitary-gonadal systems), and, in some cases, immune status. Manipulations such as relocation and/or removal of an animal from its current social group or, alternatively, formation of a new social group can have adverse effects on all of these outcome measures that may be either transient or more persistent depending on the species, sex, and other experimental conditions. Social primates may also experience significant stress associated with their rank in the group's dominance hierarchy. Finally, stress during prenatal development or during the early postnatal period may have long-lasting neurobiological and endocrine effects that manifest in an altered ability to cope behaviorally and physiologically with later challenges. Whereas early exposure to severe stress usually results in deficient coping abilities, certain kinds of milder stressors can promote subsequent resilience in the animal. We conclude that studies of stress in nonhuman primates can model many features of stress exposure in human populations and that such studies can play a valuable role in helping to elucidate the mechanisms underlying the role of stress in human psychopathology and endocrine dysfunction.
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Abstract
Depression causes significant morbidity in the human population. The Diathesis-Stress/Two-Hit model of depression hypothesizes that stress interacts with underlying (probably genetic) predispositions to produce a central nervous system that is primed to express psychopathology when confronted with stressful experiences later in life. Nonhuman primate (NHP) studies have been extensively utilized to test this model. NHPs are especially useful for studying effects of early experience, because many aspects of NHP infancy are similar to humans, whereas development occurs at an accelerated rate and therefore allows for more rapid assessment of experimental variables. In addition, the ability to manipulate putative risk factors, including introducing experimental stress during development, allows inference of causality not possible with human studies. This manuscript reviews experimental paradigms that have been utilized to model early adverse experience in NHPs, including peer-rearing, maternal separation, and variable foraging. It also provides examples of how this model has been used to investigate the effects of early experience on later neurobiology, physiology, and behavior associated with depression. We conclude that the NHP offers an excellent model to research mechanisms contributing to the Diathesis-Stress/Two-Hit model of depression.
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Aust S, Alkan Härtwig E, Koelsch S, Heekeren HR, Heuser I, Bajbouj M. How emotional abilities modulate the influence of early life stress on hippocampal functioning. Soc Cogn Affect Neurosci 2013; 9:1038-45. [PMID: 23685776 DOI: 10.1093/scan/nst078] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Early life stress (ELS) is known to have considerable influence on brain development, mental health and affective functioning. Previous investigations have shown that alexithymia, a prevalent personality trait associated with difficulties experiencing and verbalizing emotions, is particularly related to ELS. The aim of the present study was to investigate how neural correlates of emotional experiences in alexithymia are altered in the presence and absence of ELS. Therefore, 50 healthy individuals with different levels of alexithymia were matched regarding ELS and investigated with respect to neural correlates of audio-visually induced emotional experiences via functional magnetic resonance imaging. The main finding was that ELS modulated hippocampal responses to pleasant (>neutral) stimuli in high-alexithymic individuals, whereas there was no such modulation in low-alexithymic individuals matched for ELS. Behavioral and psychophysiological results followed a similar pattern. When considered independent of ELS, alexithymia was associated with decreased responses in insula (pleasant > neutral) and temporal pole (unpleasant > neutral). Our results show that the influence of ELS on emotional brain responses seems to be modulated by an individual's degree of alexithymia. Potentially, protective and adverse effects of emotional abilities on brain responses to emotional experiences are discussed.
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Affiliation(s)
- Sabine Aust
- Cluster of Excellence "Languages of Emotion", Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, and Department of Psychiatry, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Eschenallee 3, 14150 Berlin, GermanyCluster of Excellence "Languages of Emotion", Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, and Department of Psychiatry, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Eschenallee 3, 14150 Berlin, GermanyCluster of Excellence "Languages of Emotion", Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, and Department of Psychiatry, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Eschenallee 3, 14150 Berlin, Germany
| | - Elif Alkan Härtwig
- Cluster of Excellence "Languages of Emotion", Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, and Department of Psychiatry, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Eschenallee 3, 14150 Berlin, GermanyCluster of Excellence "Languages of Emotion", Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, and Department of Psychiatry, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Eschenallee 3, 14150 Berlin, Germany
| | - Stefan Koelsch
- Cluster of Excellence "Languages of Emotion", Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, and Department of Psychiatry, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Eschenallee 3, 14150 Berlin, GermanyCluster of Excellence "Languages of Emotion", Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, and Department of Psychiatry, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Eschenallee 3, 14150 Berlin, Germany
| | - Hauke R Heekeren
- Cluster of Excellence "Languages of Emotion", Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, and Department of Psychiatry, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Eschenallee 3, 14150 Berlin, GermanyCluster of Excellence "Languages of Emotion", Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, and Department of Psychiatry, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Eschenallee 3, 14150 Berlin, Germany
| | - Isabella Heuser
- Cluster of Excellence "Languages of Emotion", Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, and Department of Psychiatry, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Eschenallee 3, 14150 Berlin, GermanyCluster of Excellence "Languages of Emotion", Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, and Department of Psychiatry, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Eschenallee 3, 14150 Berlin, GermanyCluster of Excellence "Languages of Emotion", Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, and Department of Psychiatry, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Eschenallee 3, 14150 Berlin, Germany
| | - Malek Bajbouj
- Cluster of Excellence "Languages of Emotion", Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, and Department of Psychiatry, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Eschenallee 3, 14150 Berlin, GermanyCluster of Excellence "Languages of Emotion", Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, and Department of Psychiatry, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Eschenallee 3, 14150 Berlin, GermanyCluster of Excellence "Languages of Emotion", Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, Dahlem Institute for Neuroimaging of Emotion, Freie Universität Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany, and Department of Psychiatry, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Eschenallee 3, 14150 Berlin, Germany
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McLean J, Krishnadas R, Batty GD, Burns H, Deans KA, Ford I, McConnachie A, McGinty A, McLean JS, Millar K, Sattar N, Shiels PG, Tannahill C, Velupillai YN, Packard CJ, Condon BR, Hadley DM, Cavanagh J. Early life socioeconomic status, chronic physiological stress and hippocampal N-acetyl aspartate concentrations. Behav Brain Res 2012; 235:225-30. [PMID: 22917526 DOI: 10.1016/j.bbr.2012.08.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2012] [Revised: 08/06/2012] [Accepted: 08/10/2012] [Indexed: 12/29/2022]
Abstract
OBJECTIVE Early life socioeconomic deprivation has been associated with cognitive and behavioural changes that persist through towards adulthood. In this study, we investigated whether early life socioeconomic status is associated with changes in the hippocampus N-acetyl aspartate (NAA), using the non-invasive technique of magnetic resonance spectroscopy (MRS). METHODS We performed proton magnetic resonance spectroscopy ((1)H-MRS) of the hippocampus at 3T in 30 adult males, selected from the PSOBID cohort. We conducted multiple regression analysis to examine the relationship between early socioeconomic status (SES) and concentration of N-acetyl-aspartate in the hippocampus. We also examined whether the relationship between these variables was mediated by markers of chronic physiological stress. RESULTS Greater socioeconomic deprivation was associated with lower hippocampal NAA concentrations bilaterally. The relationship between early life SES and hippocampal NAA concentrations was mediated by allostatic load index - a marker of chronic physiological stress. CONCLUSIONS Greater early life socioeconomic deprivation was associated with lower concentrations of NAA reflecting lesser neuronal integrity. This relationship was mediated by greater physiological stress. Further work, to better understand the biological processes underlying the effects of poverty, physiological stress on hippocampal metabolites is necessary.
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Affiliation(s)
- John McLean
- Sackler Institute of Psychobiological Research, Institute of Health and Wellbeing University of Glasgow, Glasgow G51 4TF, Scotland, United Kingdom.
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Metabolic syndrome and neurometabolic asymmetry of hippocampus in adult bonnet monkeys. Physiol Behav 2011; 103:535-9. [PMID: 21459102 DOI: 10.1016/j.physbeh.2011.03.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Revised: 03/18/2011] [Accepted: 03/21/2011] [Indexed: 01/25/2023]
Abstract
OBJECTIVE Obesity is associated with the insulin resistance metabolic syndrome, postulated to be mediated by stress-induced alterations within the hypothalamic-pituitary-adrenal (HPA) axis. In adult bonnet macaques we examined relationships between components of the metabolic syndrome, hippocampal neurometabolic asymmetry, an indicator of negative affect, and juvenile cerebrospinal fluid (csf) corticotropin-releasing factor (CRF) levels obtained after stress exposure associated with maternal food insecurity and in controls. METHODS Eleven adult male monkeys (seven with early life stress) who had undergone csf-CRF analyses as juveniles had magnetic resonance spectroscopic imaging (MRSI) of bilateral hippocampus, morphometry (body mass index, BMI; sagittal abdominal diameter, SAD) and determination of fasting plasma glucose and insulin as adults. Neurometabolite ratios included N-acetyl-aspartate as numerator (NAA; a marker of neuronal integrity) and choline (Cho; cell turnover) and creatine (Cr; reference analyte) as denominators. RESULTS Elevated juvenile csf-CRF levels positively predicted adult BMI and SAD and were associated with right>left shift of NAA ratio within the hippocampus. Adult visceral obesity and insulin level correlated with right>left shift in hippocampal NAA concentrations, controlling for age and denominator. CONCLUSION Juvenile csf-CRF levels, a neuropeptide associated with early life stress, predict adult visceral obesity and hippocampal asymmetry supporting the hypothesis that metabolic syndrome in adults may be related to early life stress. Furthermore, this study demonstrates asymmetrical hippocampal alterations related to obesity.
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