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Chen HJC, Spiers JG, Lerskiatiphanich T, Parker SE, Lavidis NA, Fung JN, Woodruff TM, Lee JD. Complement C5a Receptor Signaling Alters Stress Responsiveness and Modulates Microglia Following Chronic Stress Exposure. BIOLOGICAL PSYCHIATRY GLOBAL OPEN SCIENCE 2024; 4:100306. [PMID: 38628385 PMCID: PMC11019103 DOI: 10.1016/j.bpsgos.2024.100306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 02/26/2024] [Accepted: 02/28/2024] [Indexed: 04/19/2024] Open
Abstract
Background Accumulating evidence underscores the pivotal role of heightened inflammation in the pathophysiology of stress-related diseases, but the underlying mechanisms remain elusive. The complement system, a key effector of the innate immune system, produces the C5-cleaved activation product C5a upon activation, initiating inflammatory responses through the canonical C5a receptor 1 (C5aR1). While C5aR1 is expressed in stress-responsive brain regions, its role in stress responsiveness remains unknown. Methods To investigate C5a-C5aR1 signaling in stress responses, mice underwent acute and chronic stress paradigms. Circulating C5a levels and messenger RNA expression of C5aR1 in the hippocampus and adrenal gland were measured. C5aR1-deficient mice were used to elucidate the effects of disrupted C5a-C5aR1 signaling across behavioral, hormonal, metabolic, and inflammation parameters. Results Chronic restraint stress elevated circulating C5a levels while reducing C5aR1 messenger RNA expression in the hippocampus and adrenal gland. Notably, the absence of C5aR1 signaling enhanced adrenal sensitivity to adrenocorticotropic hormone, concurrently reducing pituitary adrenocorticotropic hormone production and enhancing the response to acute stress. C5aR1-deficient mice exhibited attenuated reductions in locomotor activity and body weight under chronic stress. Additionally, these mice displayed increased glucocorticoid receptor sensitivity and disrupted glucose and insulin homeostasis. Chronic stress induced an increase in C5aR1-expressing microglia in the hippocampus, a response mitigated in C5aR1-deficient mice. Conclusions C5a-C5aR1 signaling emerges as a key metabolic regulator during stress, suggesting that complement activation and dysfunctional C5aR1 signaling may contribute to neuroinflammatory phenotypes in stress-related disorders. The results advocate for further exploration of complement C5aR1 as a potential therapeutic target for stress-related conditions.
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Affiliation(s)
- Hsiao-Jou Cortina Chen
- School of Biomedical Sciences, the University of Queensland, St. Lucia, Brisbane, Queensland, Australia
- Metabolic Research Laboratories, Wellcome Trust MRC Institute of Metabolic Science, University of Cambridge, Addenbrooke’s Hospital, Cambridge, United Kingdom
| | - Jereme G. Spiers
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Bundoora, Victoria, Australia
- Clear Vision Research, Eccles Institute of Neuroscience, John Curtin School of Medical Research, College of Health and Medicine, the Australian National University, Acton, Australian Capital Territory, Australia
- School of Medicine and Psychology, College of Health and Medicine, the Australian National University, Australian Capital Territory, Australia
| | - Titaya Lerskiatiphanich
- School of Biomedical Sciences, the University of Queensland, St. Lucia, Brisbane, Queensland, Australia
| | - Sandra E. Parker
- School of Biomedical Sciences, the University of Queensland, St. Lucia, Brisbane, Queensland, Australia
| | - Nickolas A. Lavidis
- School of Biomedical Sciences, the University of Queensland, St. Lucia, Brisbane, Queensland, Australia
| | - Jenny N. Fung
- School of Biomedical Sciences, the University of Queensland, St. Lucia, Brisbane, Queensland, Australia
| | - Trent M. Woodruff
- School of Biomedical Sciences, the University of Queensland, St. Lucia, Brisbane, Queensland, Australia
- Queensland Brain Institute, the University of Queensland, St Lucia, Brisbane, Queensland, Australia
| | - John D. Lee
- School of Biomedical Sciences, the University of Queensland, St. Lucia, Brisbane, Queensland, Australia
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Shi X, Ying Y, Yu Z, Xing M, Zhu J, Feng W, Xu D, Zhang W, Zhou M, Wang J, Yu X, Zhao K. Risk factors for postpartum depression in Chinese women: A cross-sectional study at 6 weeks postpartum. J Psychosom Res 2021; 140:110295. [PMID: 33227552 DOI: 10.1016/j.jpsychores.2020.110295] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 11/10/2020] [Accepted: 11/10/2020] [Indexed: 01/10/2023]
Abstract
OBJECTIVE Postpartum depression (PPD) has received increasing attention due to its harmful impacts and high incidence. PPD is affected by physiological and psychological factors, but the conclusions are not uniform at present, so this study explored the risk factors of postpartum depressive symptoms (PPDS) in Chinese population. METHODS A total of 397 women attending the obstetric department of the First Affiliated Hospital of Wenzhou Medical University participated in the questionnaire survey, mainly through a cross sectional study. At 6 weeks postpartum, the Edinburgh Postpartum Depression Scale (EPDS) and Pittsburgh Sleep Quality Index (PSQI) were used to assess PPDS and sleep quality, respectively. RESULTS The incidence of probable PPDS in our study population was 14.6% at 6 weeks postpartum. Women with blood group A had an almost 3-fold greater risk of PPDS than those with blood group B (OR [95% CI], 2.99 [1.43-6.28], p = 0.004). After adjusting for potential confounding variables, the blood group A phenotype was significantly more prevalent in women with PPDS compared to blood group B (OR [95% CI], 2.65 [1.23-5.70], p = 0.01). CONCLUSIONS Compared to women with blood groups B, AB or O, women with blood group A had high odds of PPDS. If this result can be demonstrated and replicated in other populations, blood group A may be a useful predictor of risk for PPDS in Chinese postpartum women.
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Affiliation(s)
- Xiang Shi
- School of Mental Health, Wenzhou Medical University, Wenzhou, China
| | - Yinwei Ying
- School of First Clinical Medical, Wenzhou Medical University, Wenzhou, China
| | - Zhelin Yu
- School of First Clinical Medical, Wenzhou Medical University, Wenzhou, China
| | - Minzhi Xing
- School of Mental Health, Wenzhou Medical University, Wenzhou, China
| | - Jie Zhu
- School of Mental Health, Wenzhou Medical University, Wenzhou, China
| | - Wenqian Feng
- School of Mental Health, Wenzhou Medical University, Wenzhou, China
| | - Dongwu Xu
- School of Mental Health, Wenzhou Medical University, Wenzhou, China
| | - Wenmiao Zhang
- Department of Obstetrics, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Meixi Zhou
- Department of Obstetrics, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jiangling Wang
- Department of Obstetrics, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xin Yu
- School of Mental Health, Wenzhou Medical University, Wenzhou, China.
| | - Ke Zhao
- School of Mental Health, Wenzhou Medical University, Wenzhou, China; The Affiliated Kangning Hospital of Wenzhou Medical University, Wenzhou, China.
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Leff-Gelman P, Mancilla-Herrera I, Flores-Ramos M, Cruz-Fuentes C, Reyes-Grajeda JP, García-Cuétara MDP, Bugnot-Pérez MD, Pulido-Ascencio DE. The Immune System and the Role of Inflammation in Perinatal Depression. Neurosci Bull 2016; 32:398-420. [PMID: 27432060 PMCID: PMC5563787 DOI: 10.1007/s12264-016-0048-3] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 04/23/2016] [Indexed: 01/01/2023] Open
Abstract
Major depression during pregnancy is a common psychiatric disorder that arises from a complex and multifactorial etiology. Psychosocial stress, sex, hormones, and genetic vulnerability increase the risk for triggering mood disorders. Microglia and toll-like receptor 4 play a crucial role in triggering wide and varied stress-induced responses mediated through activation of the inflammasome; this leads to the secretion of inflammatory cytokines, increased serotonin metabolism, and reduction of neurotransmitter availability along with hypothalamic-pituitary-adrenal axis hyperactivity. Dysregulation of this intricate neuroimmune communication network during pregnancy modifies the maternal milieu, enhancing the emergence of depressive symptoms and negative obstetric and neuropsychiatric outcomes. Although several studies have clearly demonstrated the role of the innate immune system in major depression, it is still unclear how the placenta, the brain, and the monoaminergic and neuroendocrine systems interact during perinatal depression. Thus, in the present review we describe the cellular and molecular interactions between these systems in major depression during pregnancy, proposing that the same stress-related mechanisms involved in the activation of the NLRP3 inflammasome in microglia and peripheral myeloid cells in depressed patients operate in a similar fashion in the neuroimmune placenta during perinatal depression. Thus, activation of Toll-like receptor 2 and 4 signaling and the NLRP3 inflammasome in placental immune cells may promote a shift of the Th1/Th2 bias towards a predominant Th1/Th17 inflammatory response, associated with increased secretion of pro-inflammatory cytokines, among other secreted autocrine and paracrine mediators, which play a crucial role in triggering and/or exacerbating depressive symptoms during pregnancy.
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Affiliation(s)
| | | | - Mónica Flores-Ramos
- National Institute of Psychiatry, Mexico City, Mexico
- National Council of Science and Technology, Mexico City, Mexico
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Pituitary dendritic cells communicate immune pathogenic signals. Brain Behav Immun 2015; 50:232-240. [PMID: 26188188 DOI: 10.1016/j.bbi.2015.07.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 07/01/2015] [Accepted: 07/11/2015] [Indexed: 12/23/2022] Open
Abstract
This study reveals the presence of dendritic cells (DCs) in the pituitary gland, which play a role in communicating immune activation to the hypothalamic pituitary adrenal (HPA) axis. Using enhanced yellow fluorescent protein (eyfp) expression as a reporter for CD11c, a marker of DCs, we demonstrate anatomically the presence of CD11c/eyfp+ cells throughout the pituitary. Flow cytometric analysis shows that the predominant cellular phenotype of pituitary CD11c/eyfp+ cells resembles that of non-lymphoid DCs. In vivo and in vitro immune challenge with lipopolysaccharide (LPS) stimulates these pituitary CD11c/eyfp+ DCs, but not eyfp(neg) cells, to increase levels of pro-inflammatory cytokines, IL-6, IL-1β, and TNF-α. In vivo analysis of plasma glucocorticoid (GC) and adrenocorticotropic hormone (ACTH) levels at this early phase of the immune response to LPS suggest that pro-inflammatory cytokine production by DCs within the pituitary may activate the release of GCs from the adrenals via ACTH. Pituitary CD11c/eyfp+ cells also express annexin A1 (ANXA1), indicating a role in GC signal attenuation. In summary, our data demonstrate that a resident DC population of the pituitary gland coordinates GC release in the early phase of systemic immune activation, thereby providing an essential immune signaling sentinel for the initial shaping of the systemic immune response to LPS.
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Buss NAPS, Gavins FNE, Cover PO, Terron A, Buckingham JC. Targeting the annexin 1-formyl peptide receptor 2/ALX pathway affords protection against bacterial LPS-induced pathologic changes in the murine adrenal cortex. FASEB J 2015; 29:2930-42. [PMID: 25818588 DOI: 10.1096/fj.14-268375] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 03/04/2015] [Indexed: 12/20/2022]
Abstract
Hypothalamo-pituitary-adrenocortical dysfunction contributes to morbidity and mortality in a high proportion of patients with sepsis. Here, we provide new insights into the underlying adrenal pathology. Using a murine model of endotoxemia (LPS injection), we demonstrate that adrenal insufficiency is triggered early in the disease. LPS induced a local inflammatory response in the adrenal gland within 4 hours of administration, coupled with increased expression of mRNAs for annexin A1 (AnxA1) and the formyl peptide receptors [(Fprs) 1, 2, and 3], a loss of lipid droplets in cortical cells (index of availability of cholesterol, the substrate for steroidogenesis), and a failure to mount a steroidogenic response to ACTH. Deletion of AnxA1 or Fpr2/3 in mice prevented lipid droplet loss, but not leukocyte infiltration. LPS increased adrenal myeloid differentiation primary response gene 88 and TLR2 mRNA expression, but not lymphocyte antigen 96 or TLR4. By contrast, neutrophil depletion prevented leukocyte infiltration and increased AnxA1, Fpr1, and Fpr3 mRNAs but had no impact on lipid droplet loss. Our novel data demonstrate that AnxA1 and Fpr2 have a critical role in the manifestation of adrenal insufficiency in this model, through regulation of cholesterol ester storage, suggesting that pharmacologic interventions targeting the AnxA1/FPR/ALX pathway may provide a new approach for the maintenance of adrenal steroidogenesis in sepsis.
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Affiliation(s)
- Nicholas A P S Buss
- *Division of Diabetes, Endocrinology and Metabolism and Division of Brain Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom; Department of Physiology, Louisiana State University Health Science Center, Shreveport, Louisiana, USA; Safety Assessment, GlaxoSmithKline, Ware, United Kingdom; and Brunel University London, Uxbridge, United Kingdom
| | - Felicity N E Gavins
- *Division of Diabetes, Endocrinology and Metabolism and Division of Brain Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom; Department of Physiology, Louisiana State University Health Science Center, Shreveport, Louisiana, USA; Safety Assessment, GlaxoSmithKline, Ware, United Kingdom; and Brunel University London, Uxbridge, United Kingdom
| | - Patricia O Cover
- *Division of Diabetes, Endocrinology and Metabolism and Division of Brain Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom; Department of Physiology, Louisiana State University Health Science Center, Shreveport, Louisiana, USA; Safety Assessment, GlaxoSmithKline, Ware, United Kingdom; and Brunel University London, Uxbridge, United Kingdom
| | - Andrea Terron
- *Division of Diabetes, Endocrinology and Metabolism and Division of Brain Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom; Department of Physiology, Louisiana State University Health Science Center, Shreveport, Louisiana, USA; Safety Assessment, GlaxoSmithKline, Ware, United Kingdom; and Brunel University London, Uxbridge, United Kingdom
| | - Julia C Buckingham
- *Division of Diabetes, Endocrinology and Metabolism and Division of Brain Sciences, Faculty of Medicine, Imperial College London, London, United Kingdom; Department of Physiology, Louisiana State University Health Science Center, Shreveport, Louisiana, USA; Safety Assessment, GlaxoSmithKline, Ware, United Kingdom; and Brunel University London, Uxbridge, United Kingdom
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Liu J, Buisman-Pijlman F, Hutchinson MR. Toll-like receptor 4: innate immune regulator of neuroimmune and neuroendocrine interactions in stress and major depressive disorder. Front Neurosci 2014; 8:309. [PMID: 25324715 PMCID: PMC4179746 DOI: 10.3389/fnins.2014.00309] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 09/13/2014] [Indexed: 01/06/2023] Open
Abstract
Major depressive disorder (MDD) poses one of the highest disease burdens worldwide. Yet, current treatments targeting serotonergic and noradrenaline reuptake systems are insufficient to provide long-term relief from depressive symptoms in most patients, indicating the need for new treatment targets. Having the ability to influence behavior similar to depressive symptoms, as well as communicate with neuronal and neuroendocrine systems, the innate immune system is a strong candidate for MDD treatments. Given the complex nature of immune signaling, the main question becomes: What is the role of the innate immune system in MDD? The current review presents evidence that toll-like receptor 4 (TLR4), via driving both peripheral and central immune responses, can interact with serotonergic neurotransmission and cause neuroendocrine disturbances, thus integrating with widely observed hallmarks of MDD. Additionally, through describing the multi-directional communication between immune, neural and endocrine systems in stress, TLR4—related mechanisms can mediate stress-induced adaptations, which are necessary for the development of MDD. Therefore, apart from exogenous pathogenic mechanisms, TLR4 is involved in immune changes as a result of endogenous stress signals, playing an integral part in the pathophysiology, and could be a potential target for pharmacological treatments to improve current interventions for MDD.
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Affiliation(s)
- JiaJun Liu
- Neuroimmunopharmacology Group, Discipline of Physiology, School of Medical Sciences, The University of Adelaide Adelaide, SA, Australia
| | - Femke Buisman-Pijlman
- Discipline of Pharmacology, School of Medical Sciences, The University of Adelaide Adelaide, SA, Australia
| | - Mark R Hutchinson
- Neuroimmunopharmacology Group, Discipline of Physiology, School of Medical Sciences, The University of Adelaide Adelaide, SA, Australia
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Fuchs F, Damm J, Gerstberger R, Roth J, Rummel C. Activation of the inflammatory transcription factor nuclear factor interleukin-6 during inflammatory and psychological stress in the brain. J Neuroinflammation 2013; 10:140. [PMID: 24279606 PMCID: PMC4222273 DOI: 10.1186/1742-2094-10-140] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 11/12/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The transcription factor nuclear factor interleukin 6 (NF-IL6) is known to be activated by various inflammatory stimuli in the brain. Interestingly, we recently detected NF-IL6-activation within the hypothalamus-pituitary-adrenal (HPA)-axis of rats after systemic lipopolysaccharide (LPS)-injection. Thus, the aim of the present study was to investigate whether NF-IL6 is activated during either, inflammatory, or psychological stress in the rat brain. METHODS Rats were challenged with either the inflammatory stimulus LPS (100 μg/kg, i.p.) or exposed to a novel environment. Core body temperature (Tb) and motor activity were monitored using telemetry, animals were killed at different time points, brains and blood removed, and primary cell cultures of the anterior pituitary lobe (AL) were investigated. Analyses were performed using immunohistochemistry, RT-PCR, and cytokine-specific bioassays. RESULTS Stress stimulation by a novel environment increased NF-IL6-immunoreactivity (IR) in the pituitary's perivascular macrophages and hypothalamic paraventricular cells and a rise in Tb lasting approximately 2 h. LPS stimulation lead to NF-IL6-IR in several additional cell types including ACTH-IR-positive corticotrope cells in vivo and in vitro. Two other proinflammatory transcription factors, namely signal transducer and activator of transcription (STAT)3 and NFκB, were significantly activated and partially colocalized with NF-IL6-IR in cells of the AL only after LPS-stimulation, but not following psychological stress. In vitro NF-IL6-activation was associated with induction and secretion of TNFα in folliculostellate cells, which could be antagonized by the JAK-STAT-inhibitor AG490. CONCLUSIONS We revealed, for the first time, that NF-IL6 activation occurs not only during inflammatory LPS stimulation, but also during psychological stress, that is, a novel environment. Both stressors were associated with time-dependent activation of NF-IL6 in different cell types of the brain and the pituitary. Moreover, while NF-IL6-IR was partially linked to STAT3 and NFκB activation, TNFα production, and ACTH-IR after LPS stimulation; this was not the case after exposure to a novel environment, suggesting distinct underlying signaling pathways. Overall, NF-IL6 can be used as a broad activation marker in the brain and might be of interest for therapeutic approaches not only during inflammatory but also psychological stress.
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Affiliation(s)
- Franziska Fuchs
- Department of Veterinary-Physiology and -Biochemistry, Justus-Liebig-University Giessen, Frankfurter Strasse 100, Giessen D-35392, Germany
| | - Jelena Damm
- Department of Veterinary-Physiology and -Biochemistry, Justus-Liebig-University Giessen, Frankfurter Strasse 100, Giessen D-35392, Germany
| | - Rüdiger Gerstberger
- Department of Veterinary-Physiology and -Biochemistry, Justus-Liebig-University Giessen, Frankfurter Strasse 100, Giessen D-35392, Germany
| | - Joachim Roth
- Department of Veterinary-Physiology and -Biochemistry, Justus-Liebig-University Giessen, Frankfurter Strasse 100, Giessen D-35392, Germany
| | - Christoph Rummel
- Department of Veterinary-Physiology and -Biochemistry, Justus-Liebig-University Giessen, Frankfurter Strasse 100, Giessen D-35392, Germany
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Sabatino ME, Sosa LDV, Petiti JP, Mukdsi JH, Mascanfroni ID, Pellizas CG, Gutiérrez S, Torres AI, De Paul AL. Functional Toll-like receptor 4 expressed in lactotrophs mediates LPS-induced proliferation in experimental pituitary hyperplasia. Exp Cell Res 2013; 319:3020-34. [DOI: 10.1016/j.yexcr.2013.08.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 07/26/2013] [Accepted: 08/06/2013] [Indexed: 11/29/2022]
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