Repeated stress induces a pro-inflammatory state, increases amygdala neuronal and microglial activation, and causes anxiety in adult male rats
Open accessAbstract
A link exists between immune function and psychiatric conditions, particularly depressive and anxiety disorders. Psychological stress is a powerful trigger for these disorders and stress influences immune state. However, the nature of peripheral immune changes after stress conflicts across studies, perhaps due to the focus on few measures of pro-inflammatory or anti-inflammatory processes. The basolateral amygdala (BLA) is critical for emotion, and plays an important role in the effects of stress on anxiety. As such, it may be a primary central nervous system (CNS) mediator for the effects of peripheral immune changes on anxiety after stress. Therefore, this study aimed to delineate the influence of stress on peripheral pro-inflammatory and anti-inflammatory aspects, BLA immune activation, and its impact on BLA neuronal activity. To produce a more encompassing view of peripheral immune changes, this study used a less restrictive approach to categorize and group peripheral immune changes. We found that repeated social defeat stress in adult male Sprague-Dawley rats increased the frequencies of mature T-cells positive for intracellular type 2-like cytokine and serum pro-inflammatory cytokines. Principal component analysis and hierarchical clustering was used to guide grouping of T-cells and cytokines, producing unique profiles. Stress shifted the balance towards a specific set that included mostly type 2-like T-cells and pro-inflammatory cytokines. Within the CNS component, repeated stress caused an increase of activated microglia in the BLA, increased anxiety-like behaviors across several assays, and increased BLA neuronal firing in vivo that was prevented by blockade of microglia activation. Because repeated stress can trigger anxiety states by actions in the BLA, and altered immune function can trigger anxiety, these results suggest that repeated stress may trigger anxiety-like behaviors by inducing a pro-inflammatory state in the periphery and the BLA. These results begin to uncover how stress may recruit the immune system to alter the function of brain regions critical to emotion.
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Social defeat stress impacts immune regulation in the amygdala and changes in social behavior.
“Previously, social defeat stress has been shown to impact immune regulation in the amygdala and changes in social behavior [62–64].”
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Cites
From inflammation to sickness and depression: when the immune system subjugates the brain
Dantzer, R., O'Connor, J. C., Freund, G. G., Johnson, R. W., & Kelley, K. W. (2008) · Nature Reviews Neuroscience · doi:10.1038/nrn2297 · Cited by 7,395 · see citing works
Fate Mapping Analysis Reveals That Adult Microglia Derive from Primitive Macrophages
Ginhoux, F., Greter, M., Leboeuf, M., Nandi, S., See, P., Gokhan, S., Mehler, M. F., Conway, S. J., Ng, L. G., Stanley, E. R., et al. (2010) · Science · doi:10.1126/science.1194637 · Cited by 5,175 · see citing works
Structural and functional features of central nervous system lymphatic vessels
Louveau, A., Smirnov, I., Keyes, T. J., Eccles, J. D., Rouhani, S. J., Peske, J. D., Derecki, N. C., Castle, D., Mandell, J. W., Lee, K. S., et al. (2015) · Nature · doi:10.1038/nature14432 · Cited by 4,413 · see citing works
Tissue-resident macrophages originate from yolk-sac-derived erythro-myeloid progenitors
Gomez Perdiguero, E., Klapproth, K., Schulz, C., Busch, K., Azzoni, E., Crozet, L., Garner, H., Trouillet, C., de Bruijn, M. F., Geissmann, F., et al. (2015) · Nature · doi:10.1038/nature13989 · Cited by 2,339 · cited 1× · see citing works
“…(Wohleb et al., 2013), monocyte trafficking from the spleen to the brain contributes to the re-establishment of anxiety in stress-sensitized mice (Wohleb et al., 2014), and microglia in the brain are derived from erythro-myeloid precursor cells (Gomez Perdiguero et al., 2015; Herz et al., 2017).”
BackgroundHeterogeneity in the distribution and morphology of microglia in the normal adult mouse brain
Lawson, L. J., Perry, V. H., Dri, P., & Gordon, S. (1990) · Neuroscience · doi:10.1016/0306-4522(90)90229-w · Cited by 2,045 · see citing works
Vyas, A., Mitra, R., Shankaranarayana Rao, B. S., & Chattarji, S. (2002) · The Journal of Neuroscience · doi:10.1523/jneurosci.22-15-06810.2002 · Cited by 1,662 · see citing works
Chronic stress and age-related increases in the proinflammatory cytokine IL-6.
Kiecolt-Glaser, J. K., Preacher, K. J., MacCallum, R. C., Atkinson, C., Malarkey, W. B., & Glaser, R. (2003) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1531903100 · Cited by 1,220 · see citing works
Inflammatory cytokines in depression: neurobiological mechanisms and therapeutic implications
Felger, J. C., & Lotrich, F. E. (2013) · Neuroscience · doi:10.1016/j.neuroscience.2013.04.060 · Cited by 1,180 · see citing works
Microglia: new roles for the synaptic stripper
Kettenmann, H., Kirchhoff, F., & Verkhratsky, A. (2013) · Neuron · doi:10.1016/j.neuron.2012.12.023 · Cited by 1,173 · see citing works
Differential Regulation of AMPA Receptor and GABA Receptor Trafficking by Tumor Necrosis Factor-α
Stellwagen, D., Beattie, E. C., Seo, J. Y., & Malenka, R. C. (2005) · The Journal of Neuroscience · doi:10.1523/jneurosci.4486-04.2005 · Cited by 985 · cited 1× · see citing works
“, 2005) while decreasing the GABAmediated inhibitory synaptic strength (Stellwagen et al., 2005).”
BackgroundStress Hormones, Proinflammatory and Antiinflammatory Cytokines, and Autoimmunity
ELENKOV, I. J., & CHROUSOS, G. P. (2002) · Annals of the New York Academy of Sciences · doi:10.1111/j.1749-6632.2002.tb04229.x · Cited by 983 · see citing works
Origin and differentiation of microglia
Ginhoux, F., Lim, S., Hoeffel, G., Low, D., & Huber, T. (2013) · Frontiers in Cellular Neuroscience · doi:10.3389/fncel.2013.00045 · Cited by 905 · cited 16× · see citing works
“[PubMed: 27154755] Wohleb ES, Fenn AM, Pacenta AM, Powell ND, Sheridan JF, Godbout JP (2012) Peripheral innate immune challenge exaggerated microglia activation, increased the number of inflammatory CNS macrophages, and prolonged social withdrawal in socially defeated mice.”
BackgroundInfluentialChronic variable stress activates hematopoietic stem cells
Heidt, T., Sager, H. B., Courties, G., Dutta, P., Iwamoto, Y., Zaltsman, A., von zur Muhlen, C., Bode, C., Fricchione, G. L., Denninger, J., et al. (2014) · Nature Medicine · doi:10.1038/nm.3589 · Cited by 803 · see citing works
Maes, M., Song, C., Lin, A., De Jongh, R., Van Gastel, A., Kenis, G., Bosmans, E., De Meester, I., Benoy, I., Neels, H., et al. (1998) · Cytokine · doi:10.1006/cyto.1997.0290 · Cited by 772 · cited 1× · see citing works
“Furthermore, the effects of stress on peripheral cytokines does not follow a pattern that would be predicted for a simple general increase in Th1 or Th2 cell function (e.g. Maes et al., 1998; Kamezaki et al., 2012).”
BackgroundPassos, I. C., Vasconcelos-Moreno, M. P., Costa, L. G., Kunz, M., Brietzke, E., Quevedo, J., Salum, G., Magalhães, P. V., Kapczinski, F., & Kauer-Sant'Anna, M. (2015) · The Lancet Psychiatry · doi:10.1016/s2215-0366(15)00309-0 · Cited by 743 · see citing works
Microglia: Dynamic Mediators of Synapse Development and Plasticity
Wu, Y., Dissing-Olesen, L., MacVicar, B. A., & Stevens, B. (2015) · Trends in Immunology · doi:10.1016/j.it.2015.08.008 · Cited by 661 · see citing works
Powell, N. D., Sloan, E. K., Bailey, M. T., Arevalo, J. M. G., Miller, G. E., Chen, E., Kobor, M. S., Reader, B. F., Sheridan, J. F., & Cole, S. W. (2013) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1310655110 · Cited by 588 · see citing works
Miller, G. E., Chen, E., Sze, J., Marin, T., Arevalo, J. M. G., Doll, R., Ma, R., & Cole, S. W. (2008) · Biological Psychiatry · doi:10.1016/j.biopsych.2008.03.017 · Cited by 552 · see citing works
Blood-brain barrier transport of cytokines: a mechanism for neuropathology
Banks, W. (2005) · Current Pharmaceutical Design · doi:10.2174/1381612053381684 · Cited by 534 · see citing works
Dantzer, R., Konsman, J.-P., Bluthé, R.-M., & Kelley, K. W. (2000) · Autonomic Neuroscience · doi:10.1016/s1566-0702(00)00220-4 · Cited by 400 · see citing works
Cole, S. W., Hawkley, L. C., Arevalo, J. M. G., & Cacioppo, J. T. (2011) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1014218108 · Cited by 306 · see citing works
Wohleb, E. S., Terwilliger, R., Duman, C. H., & Duman, R. S. (2018) · Biological Psychiatry · doi:10.1016/j.biopsych.2017.05.026 · Cited by 288 · see citing works
REDD1 is essential for stress-induced synaptic loss and depressive behavior
Ota, K. T., Liu, R.-J., Voleti, B., Maldonado-Aviles, J. G., Duric, V., Iwata, M., Dutheil, S., Duman, C., Boikess, S., Lewis, D. A., et al. (2014) · Nature Medicine · doi:10.1038/nm.3513 · Cited by 267 · see citing works
Cytokines, prostaglandins and nitric oxide in the regulation of stress-response systems
Gądek-Michalska, A., Tadeusz, J., Rachwalska, P., & Bugajski, J. (2013) · Pharmacological Reports · doi:10.1016/s1734-1140(13)71527-5 · Cited by 225 · see citing works
Stressor-specific alterations in corticosterone and immune responses in mice
Bowers, S. L., Bilbo, S. D., Dhabhar, F. S., & Nelson, R. J. (2008) · Brain, Behavior, and Immunity · doi:10.1016/j.bbi.2007.07.012 · Cited by 222 · see citing works
Adaptive immunity affects learning behavior in mice
Brynskikh, A., Warren, T., Zhu, J., & Kipnis, J. (2008) · Brain, Behavior, and Immunity · doi:10.1016/j.bbi.2007.12.008 · Cited by 221 · see citing works
Renna, M. E., O'Toole, M. S., Spaeth, P. E., Lekander, M., & Mennin, D. S. (2018) · Depression and Anxiety · doi:10.1002/da.22790 · Cited by 220 · see citing works
Stress-induced cognitive dysfunction: hormone-neurotransmitter interactions in the prefrontal cortex
Shansky, R. M., & Lipps, J. (2013) · Frontiers in Human Neuroscience · doi:10.3389/fnhum.2013.00123 · Cited by 205 · cited 1× · see citing works
“(ii) Stress causes cognitive impairment (Yuen et al., 2012; Shansky and Lipps, 2013).”
Association of trauma exposure with proinflammatory activity: a transdiagnostic meta-analysis
Tursich, M., Neufeld, R. W. J., Frewen, P. A., Harricharan, S., Kibler, J. L., Rhind, S. G., & Lanius, R. A. (2014) · Translational Psychiatry · doi:10.1038/tp.2014.56 · Cited by 204 · see citing works
How and why do T cells and their derived cytokines affect the injured and healthy brain?
Filiano, A. J., Gadani, S. P., & Kipnis, J. (2017) · Nature Reviews Neuroscience · doi:10.1038/nrn.2017.39 · Cited by 199 · see citing works
Hou, R., Garner, M., Holmes, C., Osmond, C., Teeling, J., Lau, L., & Baldwin, D. S. (2017) · Brain, Behavior, and Immunity · doi:10.1016/j.bbi.2017.01.021 · Cited by 191 · see citing works
Lapiz-Bluhm, M. D. S., Soto-Piña, A. E., Hensler, J. G., & Morilak, D. A. (2009) · Psychopharmacology · doi:10.1007/s00213-008-1224-6 · Cited by 163 · see citing works
Understanding the Role of T Cells in CNS Homeostasis
Ellwardt, E., Walsh, J. T., Kipnis, J., & Zipp, F. (2016) · Trends in Immunology · doi:10.1016/j.it.2015.12.008 · Cited by 156 · see citing works
Stroncek, D. F., Ren, J., Lee, D. W., Tran, M., Frodigh, S. E., Sabatino, M., Khuu, H., Merchant, M. S., & Mackall, C. L. (2016) · Cytotherapy · doi:10.1016/j.jcyt.2016.04.003 · Cited by 148 · see citing works
Niraula, A., Wang, Y., Godbout, J. P., & Sheridan, J. F. (2018) · The Journal of Neuroscience · doi:10.1523/jneurosci.2568-17.2018 · Cited by 137 · see citing works
Depressed and anxious mood and T-cell cytokine expressing populations in ovarian cancer patients
Lutgendorf, S. K., Lamkin, D. M., DeGeest, K., Anderson, B., Dao, M., McGinn, S., Zimmerman, B., Maiseri, H., Sood, A. K., & Lubaroff, D. M. (2008) · Brain, Behavior, and Immunity · doi:10.1016/j.bbi.2007.12.012 · Cited by 126 · cited 2× · see citing works
“T-cells were defined as CD3+ cells (Lutgendorf et al., 2008), and were further divided into CD3+CD4+ (helper T-cells or Thcells) and CD3+CD8+ (cytotoxic T-cells or Tc-cells).”
BackgroundMethodStress and Depression: Preclinical Research and Clinical Implications
Bartolomucci, A., & Leopardi, R. (2009) · PLoS ONE · doi:10.1371/journal.pone.0004265 · Cited by 111 · see citing works
Acute amygdaloid response to systemic inflammation.
Engler, H., Doenlen, R., Engler, A., Riether, C., Prager, G., Niemi, M.-B., Pacheco-López, G., Krügel, U., & Schedlowski, M. (2011) · Brain, Behavior, and Immunity · doi:10.1016/j.bbi.2011.04.005 · Cited by 108 · see citing works
Van de Velde, L.-A., Subramanian, C., Smith, A. M., Barron, L., Qualls, J. E., Neale, G., Alfonso-Pecchio, A., Jackowski, S., Rock, C. O., Wynn, T. A., et al. (2017) · Journal of Biological Chemistry · doi:10.1074/jbc.m116.766238 · Cited by 75 · see citing works
Knapp, D. J., Whitman, B. A., Wills, T. A., Angel, R. A., Overstreet, D. H., Criswell, H. E., Ming, Z., & Breese, G. R. (2011) · Brain, Behavior, and Immunity · doi:10.1016/j.bbi.2011.02.018 · Cited by 60 · see citing works
Flagged first, then by citations
Research works printed but not linked: 122
- Acharjee S, Verbeek M, Gomez CD, Bisht K, Lee B, Benoit L, Sharkey KA, Benediktsson A, Tremblay ME, Pittman QJ (2018) Reduced Microglial Activity and Enhanced Glutamate Transmission in the Basolateral Amygdala in Early CNS Autoimmunity. J Neurosci 38: 9019– 9033. 30185466 PMC6503215
- Ahmad SF, Zoheir KM, Ansari MA, Korashy HM, Bakheet SA, Ashour AE, Attia SM (2015) Stimulation of the histamine 4 receptor with 4-methylhistamine modulates the effects of chronic stress on the Th1/Th2 cytokine balance. Immunobiology 220: 341– 349. 25457414
- Anisman H, Merali Z (2002) Cytokines, stress, and depressive illness. Brain Behav Immun 16: 513– 524. 12401465
- Arima Y, Harada M, Kamimura D, Park JH, Kawano F, Yull FE, Kawamoto T, Iwakura Y, Betz UA, Marquez G, Blackwell TS, Ohira Y, Hirano T, Murakami M (2012) Regional neural activation defines a gateway for autoreactive T cells to cross the blood-brain barrier. Cell (United States) 148: 447– 457. 22304915
- Avitsur R, Stark JL, Sheridan JF (2001) Social stress induces glucocorticoid resistance in subordinate animals. Horm Behav 39: 247– 257. 11374910
- Azzinnari D, Sigrist H, Staehli S, Palme R, Hildebrandt T, Leparc G, Hengerer B, Seifritz E, Pryce CR (2014) Mouse social stress induces increased fear conditioning, helplessness and fatigue to physical challenge together with markers of altered immune and dopamine function. Neuropharmacology 85: 328– 341. 24907589
- Bajo M, Varodayan FP, Madamba SG, Robert AJ, Casal LM, Oleata CS, Siggins GR, Roberto M (2015) IL-1 interacts with ethanol effects on GABAergic transmission in the mouse central amygdala. Front Pharmacol (Switzerland) 6: 49. PMC4365713 25852553
- Banks WA, Kastin AJ, Broadwell RD (1995) Passage of cytokines across the blood-brain barrier. Neuroimmunomodulation (Switzerland) 2: 241– 248. 8963753
- Bartolomucci A, Palanza P, Gaspani L, Limiroli E, Panerai AE, Ceresini G, Poli MD, Parmigiani S (2001) Social status in mice: behavioral, endocrine and immune changes are context dependent. Physiol Behav 73: 401– 410. 11438368
- Berner B, Akca D, Jung T, Muller GA, Reuss-Borst MA (2000) Analysis of Th1 and Th2 cytokines expressing CD4+ and CD8+ T cells in rheumatoid arthritis by flow cytometry. J Rheumatol 27: 1128– 1135. 10813277
- Berton O, McClung CA, Dileone RJ, Krishnan V, Renthal W, Russo SJ, Graham D, Tsankova NM, Bolanos CA, Rios M, Monteggia LM, Self DW, Nestler EJ (2006) Essential role of BDNF in the mesolimbic dopamine pathway in social defeat stress. Science 311: 864– 868. 16469931
- Beynon SB, Walker FR (2012) Microglial activation in the injured and healthy brain: What are we really talking about? practical and theoretical issues associated with the measurement of changes in microglial morphology. Neuroscience (United States) 225: 162– 171. 22824429
- Bhandage AK, Jin Z, Korol SV, Shen Q, Pei Y, Deng Q, Espes D, Carlsson PO, Kamali-Moghaddam M, Birnir B (2018) GABA regulates release of inflammatory cytokines from peripheral blood mononuclear cells and CD4(+) T cells and is immunosuppressive in type 1 diabetes. Ebiomedicine (Netherlands) 30: 283– 294. PMC5952354 29627388
- Blandino P Jr, Barnum CJ, Deak T (2006) The involvement of norepinephrine and microglia in hypothalamic and splenic IL-1beta responses to stress. J Neuroimmunol (Netherlands) 173: 87– 95. 16386803
- Bollinger JL, Collins KE, Patel R, Wellman CL (2017) Behavioral stress alters corticolimbic microglia in sex- and brain region-specific manner. PLoS One 12: e0187631. 29194444 PMC5711022
- Boschen KE, Hamilton GF, Delorme JE, Klintsova AY (2014) Activity and social behavior in a complex environment in ratsneonatally exposed to alcohol. Alcohol 48: 533– 541 25150044 PMC4163121
- Breen MS, Tylee DS, Maihofer AX, Neylan TC, Mehta D, Binder EB, Chandler SD, Hess JL, Kremen WS, Risbrough VB, Woelk CH, Baker DG, Nievergelt CM, Tsuang MT, Buxbaum JD, Glatt SJ (2018) PTSD Blood Transcriptome Mega-Analysis: Shared Inflammatory Pathways across Biological Sex and Modes of Trauma. Neuropsychopharmacology 43: 469– 481 28925389 PMC5770765
- Brown DA, Sawchenko PE (2007) Time course and distribution of inflammatory and neurodegenerative events suggest structural bases for the pathogenesis of experimental autoimmune encephalomyelitis. J Comp Neurol (United States) 502: 236– 260. 17348011
- Brown GC, Vilalta A (2015) How microglia kill neurons. Brain Res 1628 (Pt B): 288– 297 26341532
- Budiu RA, Vlad AM, Nazario L, Bathula C, Cooper KL, Edmed J, Thaker PH, Urban J, Kalinski P, Lee AV, Elishaev EL, Conrads TP, Flint MS (2017). Restraint and Social Isolation Stressors Differentially Regulate Adaptive Immunity and Tumor Angiogenesis in a Breast Cancer Mouse Model. Cancer Clin Oncol 6: 12– 24 28603578 PMC5464739
- Calcagni E, Elenkov I (2006) Stress system activity, innate and T helper cytokines, and susceptibility to immune-related diseases. Ann N Y Acad Sci 1069: 62– 76. 16855135
- Caserta MT, O’Connor TG, Wyman PA, Wang H, Moynihan J, Cross W, Tu X, Jin X (2008) The associations between psychosocial stress and the frequency of illness, and innate and adaptive immune function in children. Brain Behav Immun 22: 933– 940 18308510 PMC2516370
- Chida Y, Sudo N, Kubo C (2005) Social isolation stress exacerbates autoimmune disease in MRL/lpr mice. J Neuroimmunol 158: 138– 144. 15589047
- Dantzer R (2001) Cytokine-induced sickness behavior: Mechanisms and implications. Ann N Y Acad Sci 933: 222– 234. 12000023
- Deak T, Bellamy C, D’Agostino LG (2003) Exposure to forced swim stress does not alter central production of IL-1. Brain Res 972: 53– 63 12711078
- Deak T, Bordner KA, McElderry NK, Barnum CJ, Blandino P Jr, Deak MM, Tammariello SP (2005) Stress-induced increases in hypothalamic IL-1: a systematic analysis of multiple stressor paradigms. Brain Res Bull 64: 541– 556 15639551
- Dunphy-Doherty F, O’Mahony SM, Peterson VL, O’Sullivan O, Crispie F, Cotter PD, Wigmore P, King MV, Cryan JF, Fone KCF (2018) Post-weaning social isolation of rats leads to long-term disruption of the gut microbiota-immune-brain axis. Brain Behav Immun 68: 261– 273 29104061
- Eddy P, Heckenberg R, Wertheim EH, Kent S, Wright BJ (2016) A systematic review and meta-analysis of the effort-reward imbalance model of workplace stress with indicators of immune function. J Psychosom Res 91: 1– 8 27894456
- Engelhardt B, Ransohoff RM (2005) The ins and outs of T-lymphocyte trafficking to the CNS: Anatomical sites and molecular mechanisms. Trends Immunol (England) 26: 485– 495. 16039904
- Ferrini F, De Koninck Y (2013) Microglia control neuronal network excitability via BDNF signalling. Neural Plast (United States) 2013: 429815. PMC3780625 24089642
- File SE, Hyde JR (1978) Can social interaction be used to measure anxiety? Br J Pharmacol 62: 19– 24 563752 PMC1667770
- Frick LR, Arcos ML, Rapanelli M, Zappia MP, Brocco M, Mongini C, Genaro AM, Cremaschi GA (2009) Chronic restraint stress impairs T-cell immunity and promotes tumor progression in mice. Stress (England) 12: 134– 143. 18609297
- Gerritsen W, Heijnen CJ, Wiegant VM, Bermond B, Frijda NH (1996) Experimental social fear: immunological, hormonal, and autonomic concomitants. Psychosom Med. 58: 273– 286 8771627
- Girotti M, Donegan JJ, Morilak DA (2011) Chronic intermittent cold stress sensitizes neuro-immune reactivity in the rat brain. Psychoneuroendocrinology (England) 36: 1164– 1174. PMC3130087 21411230
- Hashizume H, Horibe T, Ohshima A, Ito T, Yagi H, Takigawa M (2005) Anxiety accelerates T-helper 2-tilted immune responses in patients with atopic dermatitis. Br J Dermatol 152: 1161– 1164 15948976
- Herz J, Filiano AJ, Smith A, Yogev N, Kipnis J (2017) Myeloid Cells in the Central Nervous System. Immunity 46: 943– 956 28636961 PMC5657250
- Hong M, Zheng J, Ding ZY, Chen JH, Yu L, Niu Y, Hua YQ, Wang LL (2013) Imbalance between Th17 and treg cells may play an important role in the development of chronic unpredictable mild stress-induced depression in mice. Neuroimmunomodulation (Switzerland) 20: 39– 50. 23172104
- Hou N, Zhang X, Zhao L, Zhao X, Li Z, Song T, Huang C (2013) A novel chronic stress-induced shift in the Th1 to Th2 response promotes colon cancer growth. Biochem Biophys Res Commun 439: 471– 476 24036270
- Hu GZ, Yang SJ, Hu WX, Wen Z, He D, Zeng LF, Xiang Q, Wu XM, Zhou WY, Zhu QX (2016) Effect of cold stress on immunity in rats. Exp Ther Med 11: 33– 42. 26889214 PMC4726882
- Hueston CM, Barnum CJ, Eberle JA, Ferraioli FJ, Buck HM, Deak T (2011) Stress-dependent changes in neuroinflammatory markers observed after common laboratory stressors are not seen following acute social defeat of the Sprague Dawley rat. Physiol Behav 104: 187– 198 21406198
- Huse M, Lillemeier BF, Kuhns MS, Chen DS, Davis MM (2006) T cells use two directionally distinct pathways for cytokine secretion. Nat Immunol (United States) 7: 247– 255. 16444260
- Inagaki TK, Muscatell KA, Irwin MR, Cole SW, Eisenberger NI (2012) Inflammation selectively enhances amygdala activity to socially threatening images. Neuroimage 59: 3222– 3226. 22079507 PMC3348143
- Kamezaki Y, Katsuura S, Kuwano Y, Tanahashi T, Rokutan K (2012) Circulating cytokine signatures in healthy medical students exposed to academic examination stress. Psychophysiology 49: 991– 997 22468981
- Kang HJ, Voleti B, Hajszan T, Rajkowska G, Stockmeier CA, Licznerski P, Lepack A, Majik MS, Jeong LS, Banasr M, Son H, Duman RS (2012) Decreased expression of synapse-related genes and loss of synapses in major depressive disorder. Nat Med (United States) 18: 1413– 1417. PMC3491115 22885997
- Karlsson L, Nousiainen N, Scheinin NM, Maksimow M, Salmi M, Lehto SM, Tolvanen M, Lukkarinen H, Karlsson H (2017) Cytokine profile and maternal depression and anxiety symptoms in mid-pregnancy-the FinnBrain Birth Cohort Study. Arch Womens Ment Health 20: 39– 48 27699637
- Kaufmann I, Eisner C, Richter P, Huge V, Beyer A, Chouker A, Schelling G, Thiel M (2007) Lymphocyte subsets and the role of TH1/TH2 balance in stressed chronic pain patients. Neuroimmunomodulation 14: 272– 280. 18239379
- Kim SJ, Lee H, Lee G, Oh SJ, Shin MK, Shim I, Bae H (2012) CD4+CD25+ regulatory T cell depletion modulates anxiety and depression-like behaviors in mice. PLoS One (United States) 7: e42054. PMC3409145 22860054
- Kipnis J, Cohen H, Cardon M, Ziv Y, Schwartz M (2004) T cell deficiency leads to cognitive dysfunction: Implications for therapeutic vaccination for schizophrenia and other psychiatric conditions. Proc Natl Acad Sci U S A (United States) 101: 8180– 8185. PMC419577 15141078
- Klapal L, Igelhorst BA, Dietzel-Meyer ID (2016) Changes in neuronal excitability by activated microglia: Differential na(+) current upregulation in pyramid-shaped and bipolar neurons by TNF-alpha and IL-18. Front Neurol (Switzerland) 7: 44. PMC4812774 27065940
- Konsman JP, Parnet P, Dantzer R (2002) Cytokine-induced sickness behaviour: Mechanisms and implications. Trends Neurosci 25: 154– 159. 11852148
- Kraynak TE, Marsland AL, Wager TD, Gianaros PJ (2018) Functional neuroanatomy of peripheral inflammatory physiology: A meta-analysis of human neuroimaging studies. Neurosci Biobehav res 94: 76– 92 PMC6363360 30067939
- Leitermann RJ, Rostkowski AB, Urban JH (2016) Neuropeptide Y input to the rat basolateral amygdala complex and modulation by conditioned fear. J Comp Neurol 524: 2418– 2439. 26779765 PMC4900924
- Li J, Zhao R, Li X, Sun W, Qu M, Tang Q, Yang X, Zhang S (2016) Shen-qi-jie-yu-fang exerts effects on a rat model of postpartum depression by regulating inflammatory cytokines and CD4(+)CD25(+) regulatory T cells. Neuropsychiatr Dis Treat (New Zealand) 12: 883– 896. PMC4841396 27143890
- Liu YY, Zhou XY, Yang LN, Wang HY, Zhang YQ, Pu JC, Liu LX, Gui SW, Zeng L, Chen JJ, Zhou CJ, Xie P (2017) Social defeat stress causes depression-like behavior with metabolite changes in the prefrontal cortex of rats. PLoS One 12: e0176725. 28453574 PMC5409051
- Maes M (2011) Depression is an inflammatory disease, but cell-mediated immune activation is the key component of depression. Prog Neuropsychopharmacol Biol Psychiatry (England) 35: 664– 675. 20599581
- Maes M, Leonard BE, Myint AM, Kubera M, Verkerk R (2011) The new ‘5-HT’ hypothesis of depression: Cell-mediated immune activation induces indoleamine 2,3-dioxygenase, which leads to lower plasma tryptophan and an increased synthesis of detrimental tryptophan catabolites (TRYCATs), both of which contribute to the onset of depression. Prog Neuropsychopharmacol Biol Psychiatry (England) 35: 702– 721. 21185346
- Maier SF, Goehler LE, Fleshner M, Watkins LR (1998) The role of the vagus nerve in cytokine-to-brain communication. Ann N Y Acad Sci (United States) 840: 289– 300. 9629257
- Marin I, Kipnis J (2013) Learning and memory... and the immune system. Learn Mem (United States) 20: 601– 606. PMC3768198 24051097
- Marsland AL, Walsh C, Lockwood K, John-Henderson NA (2017) The effects of acute psychological stress on circulating and stimulated inflammatory markers: A systematic review and meta-analysis. Brain Behav Immun 64: 208– 219 28089638 PMC5553449
- McKim DB, Weber MD, Niraula A, Sawicki CM, Liu X, Jarrett BL, Ramirez-Chan K, Wang Y, Roeth RM, Sucaldito AD, Sobol CG, Quan N, Sheridan JF, Godbout JP (2018) Microglial recruitment of IL-1β-producing monocytes to brain endothelium causes stress-induced anxiety. Mol Psychaitry. 23: 1421– 1431. PMC5628107 28373688
- Miller AH, Maletic V, Raison CL (2009) Inflammation and its discontents: the role of cytokines in the pathophysiology of major depression. Biol Psychiatry 65: 732– 741. 19150053 PMC2680424
- Miller LG, Galpern WR, Dunlap K, Dinarello CA, Turner TJ (1991) Interleukin-1 augments gamma-aminobutyric acidA receptor function in brain. Mol Pharmacol (United States) 39: 105– 108. 1847488
- Mormède C, Castanon N, Médina C, Moze E, Lestage J, Neveu PJ, Dantzer R (2002) Chronic mild stress in mice decreases peripheral cytokine and increases central cytokine expression independently of IL-10 regulation of the cytokine network. Neuroimmunomodulation 10: 359– 366. 12907843
- Morrison H, Young K, Qureshi M, Rowe RK, Lifshitz J (2017) Quantitative microglia analyses reveal diverse morphologic responses in the rat cortex after diffuse brain injury. Sci Rep 7: 13211– 017– 13581– z. 29038483 PMC5643511
- Mosmann TR, Sad S (1996) The expanding universe of T-cell subsets: Th1, Th2 and more. Immunol Today 17: 138– 146. 8820272
- Munshi S, Rosenkranz JA (2018) Effects of Peripheral Immune Challenge on In Vivo Firing of Basolateral Amygdala Neurons in Adult Male Rats. Neuroscience 390: 174– 186 30170159 PMC6168414
- Nagaraj S, Schrum AG, Cho HI, Celis E, Gabrilovich DI (2010) Mechanism of T cell tolerance induced by myeloid-derived suppressor cells. J Immunol 184: 3106– 3116 20142361 PMC2832724
- Nakano Y, Nakamura S, Hirata M, Harada K, Ando K, Tabuchi T, Matunaga I, Oda H (1998) Immune function and lifestyle of taxi drivers in Japan. Ind Health 36: 32– 39. 9473856
- Nakata (2012) Psychosocial job stress and immunity: a systematic review. Methods Mol Biol 934: 39– 75 22933140
- National Research Council (2011) Guide for the Care and Use of Laboratory Animals. National Academies Press. 21595115
- Nelson TE, Olde Engberink A, Hernandez R, Puro A, Huitron-Resendiz S, Hao C, De Graan PN, Gruol DL (2012) Altered synaptic transmission in the hippocampus of transgenic mice with enhanced central nervous systems expression of interleukin-6. Brain Behav Immun (Netherlands) 26: 959– 971. PMC3427030 22609298
- Norden DM, Trojanowski PJ, Villanueva E, Navarro E, Godbout JP (2016) Sequential activation of microglia and astrocyte cytokine expression precedes increased iba-1 or GFAP immunoreactivity following systemic immune challenge. Glia (United States) 64: 300– 316. PMC4707977 26470014
- Ogoshi F, Yin HZ, Kuppumbatti Y, Song B, Amindari S, Weiss JH (2005) Tumor necrosis-factor-alpha (TNF-alpha) induces rapid insertion of Ca2+-permeable alpha-amino-3-hydroxyl-5-methyl-4-isoxazole-propionate (AMPA)/kainate (ca-A/K) channels in a subset of hippocampal pyramidal neurons. Exp Neurol (United States) 193: 384– 393. 15869941
- Paschall AV, Zhang R, Qi CF, Bardhan K, Peng L, Lu G, Yang J, Merad M, McGaha T, Zhou G, Mellor A, Abrams SI, Morse HC 3rd, Ozato K, Xiong H, Liu K (2015) IFN regulatory factor 8 represses GM-CSF expression in T cells to affect myeloid cell lineage differentiation. J Immunol 194: 2369– 2379. 25646302 PMC4340766
- Paxinos G, Watson C (1998) The Rat Brain in Stereotaxic Coordinates. Fourth edition. Academic Press, San Diego.
- Paxinos G, Watson C (2007) The Rat Brain in Stereotaxic Coordinates. Sixth edition. Academic Press, San Diego.
- Plata-Salaman CR, Ffrench-Mullen JM (1992) Interleukin-1 beta depresses calcium currents in CA1 hippocampal neurons at pathophysiological concentrations. Brain Res Bull (United States) 29: 221– 223. 1525675
- Radjavi A, Smirnov I, Kipnis J (2014) Brain antigen-reactive CD4+ T cells are sufficient to support learning behavior in mice with limited T cell repertoire. Brain Behav Immun (Netherlands) 35: 58– 63. PMC3858511 24012647
- Rehm KE, Elci OU, Hahn K, Marshall GD Jr (2013) The impact of self-reported psychological stress levels on changes to peripheral blood immune biomarkers in recreational marathon runners during training and recovery. Neuroimmunomodulation 20: 164– 176 23548735
- Rivera C, Li H, Thomas-Crusells J, Lahtinen H, Viitanen T, Nanobashvili A, Kokaia Z, Airaksinen MS, Voipio J, Kaila K, Saarma M (2002) BDNF-induced TrkB activation downregulates the K+-cl− cotransporter KCC2 and impairs neuronal cl− extrusion. J Cell Biol (United States) 159: 747– 752. PMC2173387 12473684
- Rosenkranz JA, Venheim ER, Padival M (2010) Chronic stress causes amygdala hyperexcitability in rodents. Biol Psychiatry 67: 1128– 1136. 20378100 PMC2882519
- Rostkowski AB, Teppen TL, Peterson DA, Urban JH (2009) cell-specific expression of Neuropeptide Y Y1 receptor immunoreactivity in the rat basolateral amygdala. J Comp Neurol 16: 166– 176. PMC3408246 19731317
- Rygula R, Abumaria N, Domenici E, Hiemke C, Fuchs E (2006) Effects of fluoxetine on behavioral deficits evoked by chronic social stress in rats. Behav Brain Res 174: 188– 192. 16949682
- Rygula R, Abumaria N, Flugge G, Fuchs E, Ruther E, Havemann-Reinecke U (2005) Anhedonia and motivational deficits in rats: Impact of chronic social stress. Behav Brain Res 162: 127– 134. 15922073
- Sabharwal L, Kamimura D, Meng J, Bando H, Ogura H, Nakayama C, Jiang JJ, Kumai N, Suzuki H, Atsumi T, Arima Y, Murakami M (2014) The gateway reflex, which is mediated by the inflammation amplifier, directs pathogenic immune cells into the CNS. J Biochem (England) 156: 299– 304. 25286911
- Savignac HM, Hyland NP, Dinan TG, Cryan JF (2011). The effects of repeated social interaction stress on behavioural and physiological parameters in a stress-sensitive mouse strain. Behav Brain Res. 216: 576– 584. 20826188
- Schmitt C, Strazielle N, Ghersi-Egea JF (2012) Brain leukocyte infiltration initiated by peripheral inflammation or experimental autoimmune encephalomyelitis occurs through pathways connected to the CSF-filled compartments of the forebrain and midbrain. J Neuroinflammation (England) 9: 187– 2094– 9–187. PMC3458946 22870891
- Segerstrom SC, Miller GE (2004) Psychological stress and the human immune system: a meta-analytic study of 30 years of inquiry. Psychol Bull 130: 601– 630. 15250815 PMC1361287
- Shaashua L, Sominsky L, Levi B, Sorski L, Reznick M, Page GG, Ben-Eliyahu S (2012) In vivo suppression of plasma IL-12 levels by acute and chronic stress paradigms: potential mediating mechanisms and sex differences. Brain Behav Immun 26: 996– 1005. 22659252 PMC3398208
- Shimamiya T, Terada N, Hiejima Y, Wakabayashi S, Kasai H, Mohri M (1985) Effects of 10-day confinement on the immune system and psychological aspects in humans. J Appl Physiol 97: 920– 924 15145927
- Slopen N, Loucks EB, Appleton AA, Kawachi I, Kubzansky LD, Non AL, Buka S, Gilman SE (2015) Early origins of inflammation: An examination of prenatal and childhood social adversity in a prospective cohort study. Psychoneuroendocrinology 51: 403– 413 25462912 PMC4268261
- Stark JL, Avitsur R, Hunzeker J, Padgett DA, Sheridan JF (2002) Interleukin-6 and the development of social disruption-induced glucocorticoid resistance. J Neuroimmunol 124: 9– 15. 11958817
- Stefanski V, Engler H (1998) Effects of acute and chronic social stress on blood cellular immunity in rats. Physiol Behav 64: 733– 741 9817588
- Stefanski V, Knopf G, Schulz S (2001) Long-term colony housing in Long Evans rats: immunological, hormonal, and behavioral consequences. J Neuroimmunol 114: 122– 130 11240023
- Stence N, Waite M, Dailey ME (2001) Dynamics of microglial activation: A confocal time-lapse analysis in hippocampal slices. Glia (United States) 33: 256– 266. 11241743
- Stewart AM, Roy S, Wong K, Gaikwad S, Chung KM, Kalueff AV (2015) Cytokine and endocrine parameters in mouse chronic social defeat: implications for translational ‘cross-domain’ modeling of stress-related brain disorders. Behav Brain Res 276: 84– 91. 25173699
- Stitt JT(1990) Passage of immunomodulators across the blood-brain barrier. Yale J Biol Med 63: 121 – 131. 2119089 PMC2589307
- Strazielle N, Creidy R, Malcus C, Boucraut J, Ghersi-Egea JF (2016) T-lymphocytes traffic into the brain across the blood-CSF barrier: Evidence using a reconstituted choroid plexus epithelium. PLoS One (United States) 11: e0150945. PMC4778949 26942913
- Sugama S, Takenouchi T, Fujita M, Conti B, Hashimoto M (2009) Differential microglial activation between acute stress and lipopolysaccharide treatment. J Neuroimmunol 207: 24– 31. 19111355
- Tynan RJ, Naicker S, Hinwood M, Nalivaiko E, Buller KM, Pow DV, Day TA, Walker FR (2010) Chronic stress alters the density and morphology of microglia in a subset of stress-responsive brain regions. Brain Behav Immun 24: 1058– 1068 20153418
- Urban JH, Leitermann RJ, DeJoseph MR, Somponpun SJ, Wolak ML, Sladek CD (2006) Influence of dehydration on the expression of neuropeptide Y Y1 receptors in hypothalamic magnocellular neurons. Endocrinology 147: 4122– 4131. 16728491
- van Praag HM (2005) Can stress cause depression? World J Biol Psychiatry 6 Suppl 2: 5– 22. 16166019
- Vanderschuren LJ, Niesink RJ, Van Ree JM (1997) The neurobiology of social play behavior in rats. Neurosci Biobehav Rev 21: 309– 326 9168267
- Varlinskaya EI, Spear LP (2008) Social interactions in adolescent and adult Sprague-Dawley rats: impact of social deprivation and test context familiarity. Behav Brain Res 188: 398– 405 18242726 PMC3057041
- Ver Hoeve ES, Kelly G, Luz S, Ghanshani S, Bhatnagar S (2013) Short-term and long-term effects of repeated social defeat during adolescence or adulthood in female rats. Neuroscience. 249: 63– 73. 23402852 PMC3743933
- Vezzani A, Maroso M, Balosso S, Sanchez MA, Bartfai T (2011) IL-1 receptor/Toll-like receptor signaling in infection, inflammation, stress and neurodegeneration couples hyperexcitability and seizures. Brain Behav Immun (Netherlands) 25: 1281– 1289. 21473909
- Vezzani A, Viviani B (2015) Neuromodulatory properties of inflammatory cytokines and their impact on neuronal excitability. Neuropharmacology (England) 96: 70– 82. 25445483
- Viviani B, Bartesaghi S, Gardoni F, Vezzani A, Behrens MM, Bartfai T, Binaglia M, Corsini E, Di Luca M, Galli CL, Marinovich M (2003) Interleukin-1beta enhances NMDA receptor-mediated intracellular calcium increase through activation of the src family of kinases. J Neurosci (United States) 23: 8692– 8700. PMC6740426 14507968
- Viviani B, Gardoni F, Marinovich M (2007) Cytokines and neuronal ion channels in health and disease. Int Rev Neurobiol (United States) 82: 247– 263. 17678965
- Walker FR, Nilsson M, Jones K (2013) Acute and chronic stress-induced disturbances of microglial plasticity, phenotype and function. Curr Drug Targets (United Arab Emirates) 14: 1262– 1276. PMC3788324 24020974
- Werneburg S, Feinberg PA, Johnson KM, Schafer DP (2017) A microglia-cytokine axis to modulate synaptic connectivity and function. Curr Opin Neurobiol (England) 47: 138– 145. PMC5797987 29096242
- Wohleb ES, Delpech JC (2017) Dynamic cross-talk between microglia and peripheral monocytes underlies stress-induced neuroinflammation and behavioral consequences. Prog Neuropsychopharmacol Biol Psychiatry 79: 40– 48. 27154755
- Wohleb ES, Fenn AM, Pacenta AM, Powell ND, Sheridan JF, Godbout JP (2012) Peripheral innate immune challenge exaggerated microglia activation, increased the number of inflammatory CNS macrophages, and prolonged social withdrawal in socially defeated mice. Psychoneuroendocrinology 37: 1491– 1505. 22386198 PMC3368999
- Wohleb ES, Franklin T, Iwata M, Duman RS (2016) Integrating neuroimmune systems in the neurobiology of depression. Nat Rev Neurosci (England) 17: 497– 511. 27277867
- Wohleb ES, Hanke ML, Corona AW, Powell ND, Stiner LM, Bailey MT, Nelson RJ, Godbout JP, Sheridan JF (2011) β-Adrenergic receptor antagonism prevents anxiety-like behavior and microglial reactivity induced by repeated social defeat. J Neurosci 31: 6277– 6288. 21525267 PMC3160240
- Wohleb ES, McKim DB, Shea DT, Powell ND, Tarr AJ, Sheridan JF, Godbout JP (2014) Re-establishment of anxiety in stress-sensitized mice is caused by monocyte trafficking from the spleen to the brain. Biol Psychiatry. 75: 970– 981. 24439304 PMC4084643
- Wohleb ES, Powell ND, Godbout JP, Sheridan JF (2013) Stress-induced recruitment of bone marrow-derived monocytes to the brain promotes anxiety-like behavior. J Neurosci 33: 13820– 13833. 23966702 PMC3755721
- Woitowich NC, Philibert KD, Leitermann RJ, Wungjiranirun M, Urban JH, Glucksman MJ (2016) EP24.15 as a potential regulator of kisspeptin within the neuroendocrine hypothalamus. Endocrinology 157: 820– 830. 26653570 PMC4733123
- Yin J-X, Tu J-l, Lin H-j, Shi F-d, Liu R-l, (2010) Centrally administered pertussis toxin inhibits microglia migration to the spinal cord and prevents dissemination of disease in an EAE mouse model. PLoS ONE 5(8): e12400. doi: 10.1371/journal.pone.0012400 20811645 PMC2928301 · DOI
- Yu B, Shinnick-Gallagher P (1994) Interleukin-1 beta inhibits synaptic transmission and induces membrane hyperpolarization in amygdala neurons. J Pharmacol Exp Ther (United States) 271: 590– 600. 7525939
- Yuen EY, Wei J, Liu W, Zhong P, Li X, Yan Z (2012) Repeated stress causes cognitive impairment by suppressing glutamate receptor expression and function in prefrontal cortex. Neuron (United States) 73: 962– 977. PMC3302010 22405206
- Zhang W, Rosenkranz JA (2012) Repeated restraint stress increases basolateral amygdala neuronal activity in an age-dependent manner. Neuroscience 226: 459– 474. 22986163 PMC3506707
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- Authors
- Munshi, S., Loh, M. K., Ferrara, N., DeJoseph, M. R., Ritger, A., Padival, M., Record, M. J., Urban, J. H., & Rosenkranz, J. A.
- Affiliations
- Rosalind Franklin University of Medicine and Science (US)
- Corresponding author
- Rosenkranz, J. Amiel
- ORCID
- Venue
- Brain, Behavior, and Immunity
- Publisher
- Elsevier BV
- Published
- 2020-02
- Volume
- 84
- Pages
- 180-199
- ISSN
- 0889-1591 (ISSN-L)
- PMC
- PMC7010555
- OpenAlex
- W2991472450
- Cited by
- 117
- References
- 40
- Citations by year
- 2026: 16 · 2025: 26 · 2024: 24 · 2023: 17 · 2022: 14 · 2021: 11 · 2020: 9
- FWCI
- 5.43
- Type
- journal article
- Language
- en
- Open access
- green
- europepmc.org
- Locations
- Brain Behavior and Immunity (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institutes of Health
- Topics
- Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
- Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
- Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
- Keywords
- repeated stress, social defeat stress, anxiety-like behavior, proinflammatory state, basolateral amygdala, microglial activation, T cell activation, inflammatory cytokines, peripheral immune activation, neuroimmune interactions, neuronal firing
- MeSH terms
- Amygdala, Animals, Anxiety, Male, Stress, Psychological, Rats, Sprague-Dawley, Rats, Long-Evans, Rats
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