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Gan X, Li X, Cai Y, Yin B, Pan Q, Teng T, He Y, Tang H, Wang T, Li J, Zhu Z, Zhou X, Li J. Metabolic features of adolescent major depressive disorder: A comparative study between treatment-resistant depression and first-episode drug-naive depression. Psychoneuroendocrinology 2024; 167:107086. [PMID: 38824765 DOI: 10.1016/j.psyneuen.2024.107086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 04/12/2024] [Accepted: 05/21/2024] [Indexed: 06/04/2024]
Abstract
Major depressive disorder (MDD) is a psychiatric illness that can jeopardize the normal growth and development of adolescents. Approximately 40% of adolescent patients with MDD exhibit resistance to conventional antidepressants, leading to the development of Treatment-Resistant Depression (TRD). TRD is associated with severe impairments in social functioning and learning ability and an elevated risk of suicide, thereby imposing an additional societal burden. In this study, we conducted plasma metabolomic analysis on 53 adolescents diagnosed with first-episode drug-naïve MDD (FEDN-MDD), 53 adolescents with TRD, and 56 healthy controls (HCs) using hydrophilic interaction liquid chromatography-mass spectrometry (HILIC-MS) and reversed-phase liquid chromatography-mass spectrometry (RPLC-MS). We established a diagnostic model by identifying differentially expressed metabolites and applying cluster analysis, metabolic pathway analysis, and multivariate linear support vector machine (SVM) algorithms. Our findings suggest that adolescent TRD shares similarities with FEDN-MDD in five amino acid metabolic pathways and exhibits distinct metabolic characteristics, particularly tyrosine and glycerophospholipid metabolism. Furthermore, through multivariate receiver operating characteristic (ROC) analysis, we optimized the area under the curve (AUC) and achieved the highest predictive accuracy, obtaining an AUC of 0.903 when comparing FEDN-MDD patients with HCs and an AUC of 0.968 when comparing TRD patients with HCs. This study provides new evidence for the identification of adolescent TRD and sheds light on different pathophysiologies by delineating the distinct plasma metabolic profiles of adolescent TRD and FEDN-MDD.
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Affiliation(s)
- Xieyu Gan
- Department of Neurology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xuemei Li
- Department of Psychiatry, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yuping Cai
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Bangmin Yin
- Department of Psychiatry, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qiyuan Pan
- The First People's Hospital of Zaoyang City, Hubei, China
| | - Teng Teng
- Department of Psychiatry, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yuqian He
- Department of Psychiatry, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Han Tang
- Department of Neurology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ting Wang
- Department of Psychology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jie Li
- Department of Psychiatry, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhengjiang Zhu
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China; Shanghai Key Laboratory of Aging Studies, Shanghai, China.
| | - Xinyu Zhou
- Department of Psychiatry, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
| | - Jinfang Li
- Department of Neurology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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Ahmed HH, Essam RM, El-Yamany MF, Ahmed KA, El-Sahar AE. Unleashing lactoferrin's antidepressant potential through the PI3K/Akt/mTOR pathway in chronic restraint stress rats. Food Funct 2023; 14:9265-9278. [PMID: 37767889 DOI: 10.1039/d3fo02222f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
Depression is a widespread neuropsychiatric illness whose etiology is yet mysterious. Lactoferrin (LF), an iron-binding glycoprotein, is reported to promote neuroprotection through its role in the modulation of oxidative stress and inflammation. The objective of the present research was to evaluate the efficacy of LF against chronic restraint stress (CRS)-induced depressive behavior in rats. Depression was evidenced by a reduced grooming time in the splash test and an increased immobility time in the tail suspension test (TST) and forced swimming test (FST). This effect was also accompanied by reduced GSH and serotonin levels and elevated lipid peroxidation and corticosterone levels in the hippocampus. Additionally, an exaggerated hippocampal inflammatory response was also shown by a rise in NF-κB (p65) and TNF-α levels and a reduced IL-10 level. Moreover, CRS substantially reduced the BDNF content as well as the protein levels of PI3K, Akt, and mTOR while boosting the GSK3β content. Interestingly, LF therapy significantly improved CRS-induced behavioral and biochemical aberrations, an effect which was suppressed upon pretreatment with LY294002 (PI3K inhibitor). This suggests that the antidepressant potential of LF may be mediated through the modulation of the PI3K/Akt/mTOR signaling pathway. Furthermore, LF succeeded in restoring 5-HT and corticosterone levels, diminishing oxidative stress and ameliorating the inflammatory cascades. Therefore, and for the first time, LF might serve as a promising antidepressant drug through targeting the PI3K/Akt/mTOR pathway.
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Affiliation(s)
- Hanan H Ahmed
- Department of Pharmacy, Al-Noor University College, Nineveh, Iraq
| | - Reham M Essam
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo, University, Cairo, Egypt.
- Biology Department, School of Pharmacy, Newgiza University, Giza, Egypt
| | - Muhammed F El-Yamany
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo, University, Cairo, Egypt.
| | - Kawkab A Ahmed
- Pathology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Ayman E El-Sahar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo, University, Cairo, Egypt.
- Biology Department, School of Pharmacy, Newgiza University, Giza, Egypt
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An Investigation of the Anti-Depressive Properties of Phenylpropanoids and Flavonoids in Hemerocallis citrina Baroni. Molecules 2022; 27:molecules27185809. [PMID: 36144545 PMCID: PMC9502271 DOI: 10.3390/molecules27185809] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 08/29/2022] [Accepted: 09/05/2022] [Indexed: 11/17/2022] Open
Abstract
The World Health Organization predicts that over the next several years, depression will become the most important mental health issue globally. Growing evidence shows that the flower buds of Hemerocallis citrina Baroni (H. citrina) possess antidepressant properties. In the search for new anti-depression drugs, a total of 15 phenylpropanoids and 22 flavonoids were isolated and identified based on spectral data (1D and 2D NMR, HR-ESI-MS, UV) from H. citrina. Among them, compound 8 was a novel compound, while compounds 1–4, 6, 9, 10, 15, 17, 24–26, 28, and 37 were isolated for the first time from Hemerocallis genus. To study the antidepressant activity of phenylpropanoids and flavonoids fractions from H. citrina, macroporous resin was used to enrich them under the guidance of UV characteristics. UHPLC-MS/MS was applied to identify the constituents of the enriched fractions. According to behavioral tests and biochemical analyses, it showed that phenylpropanoid and flavonoid fractions from H. citrina can improve the depressive-like mental state of chronic unpredictable mild stress (CUMS) rats. This might be accomplished by controlling the amounts of the inflammatory proteins IL-6, IL-1β, and TNF-α in the hippocampus as well as corticosterone in the serum. Thus, the monomer compounds were tested for their anti-neuroinflammatory activity and their structure–activity relationship was discussed in further detail.
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Zhou Z, Chen H, Tang X, He B, Gu L, Feng H. Total Saikosaponins Attenuates Depression-Like Behaviors Induced by Chronic Unpredictable Mild Stress in Rats by Regulating the PI3K/AKT/NF- κB Signaling Axis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2022; 2022:4950414. [PMID: 35761900 PMCID: PMC9233589 DOI: 10.1155/2022/4950414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 05/27/2022] [Accepted: 06/01/2022] [Indexed: 02/06/2023]
Abstract
Background Depression is a major cause of disability and most antidepressant medicines are ineffective owing to their high toxicity and numerous adverse effects. As a result, there is an urgent need to find new effective treatment methods. This paper aims to investigate the effect and mechanism of total saikosaponins (TSS) on depression-like behaviors induced by chronic unpredictable mild stress (CUMS) in rats. Methods Twenty-four male SD rats were randomly divided into 4 groups: control group, CUMS group, TSS group, and fluoxetine (Flu) group. Then, the following tests were conducted: sucrose preference test, open field test, and elevated plus maze test. Additionally, ELISA was used to detect the levels of corticosterone (CORT) and adrenocorticotropic hormone (ACTH) in the serum of the rats as well as the levels of inflammatory cytokines IL-1β, IL-6, and TNF-α in the hippocampus, and Western blot was used for measuring the expression of brain-derived neurotrophic factor (BDNF) protein and related proteins of the PI3K/AKT/NF-κB signaling pathway in the hippocampus. Results TSS could significantly improve rat behaviors, specifically indicated by increases in sucrose preference, total movement distance, stay time in the central area, number of entries into open arms, time spent in open arms, and a decrease in stay time in the peripheral area. TSS acted to significantly reduce BDNF protein expression and increase the contents of ACTH and CORT in serum as well as the levels of IL-1β, IL-6, and TNF-α in the hippocampal tissue in rats. In addition, it was able to raise the ratios of p-PI3K/PI3K and p-AKT/AKT and decrease the ratio of p-p65/p65 in tissues, which in turn regulated the PI3K/AKT/NF-κB signaling pathway. Conclusions TSS, through regulating PI3K/AKT/NF-κB signaling axis, can alleviate depression-like behaviors and elevate neuroendocrine hormone levels and inflammatory factor levels.
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Affiliation(s)
- Zhicong Zhou
- Departments of Geriatrics, Guangzhou Geriatric Hospital, 510550 Guangzhou, China
- Department of Geriatrics, Home for the Aged Guangzhou, 510550 Guangzhou, China
| | - Hui Chen
- Departments of Geriatrics, Guangzhou Geriatric Hospital, 510550 Guangzhou, China
- Department of Geriatrics, Home for the Aged Guangzhou, 510550 Guangzhou, China
| | - Xiaoyan Tang
- Department of Pharmacy, The Third Affiliated Hospital, Southern Medical University, 510630 Guangzhou, China
| | - Binghong He
- Department of Pharmacy, The Third Affiliated Hospital, Southern Medical University, 510630 Guangzhou, China
| | - Lingxia Gu
- Department of Pharmacy, The Third Affiliated Hospital, Southern Medical University, 510630 Guangzhou, China
| | - Huancun Feng
- Department of Pharmacy, The Third Affiliated Hospital, Southern Medical University, 510630 Guangzhou, China
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Jia A, Yang X, Zou B, Li J, Wang Y, Ma R, Li J, Yao Y. Saikosaponins: A Review of Structures and Pharmacological Activities. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221094908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Radix Bupleuri is a traditional medicine widely used in China and other Asian countries. Phytochemistry and pharmacology study reveal that saikosaponins(SSs) are the main bioactive compounds in Radix Bupleuri. SSs are complex compounds composed of triterpene aglycone and carbohydrate part containing 1-13 monosaccharides, which can be divided into seven types based on their structural characteristics. Many different kinds of SSs have been isolated from plants of Bupleurum L. SSs show a variety of biological activities, such as central nervous system protection, liver protection, antivirus, anti-tumor, anti-inflammation, hormone-like effects, and immune regulation functions. Due to their broad activity and favorable safety profile, SSs attract an increasing amount of attention in recent years. In this review, the structures of 86 SSs are summarized based on the different aglycones due to the diverse structures of saikosaponin(SS). The pharmacological effects and related mechanism of SSs are thoroughly reviewed, and perspectives for future research are further discussed.
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Affiliation(s)
- Ao Jia
- School of pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Xinhe Yang
- School of pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Bin Zou
- School of pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Jia Li
- School of pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Yefeng Wang
- School of Public Health & Management, Ningxia Medical University, Yinchuan 750004, China
| | - Ruixia Ma
- School of pharmacy, Ningxia Medical University, Yinchuan 750004, China
| | - Juan Li
- School of pharmacy, Ningxia Medical University, Yinchuan 750004, China
- Key Laboratory of Modernization of Traditional Chinese Medicine, Ministry of Education, Yinchuan 750004, China
| | - Yao Yao
- School of Basic Medical Science, Ningxia Medical University, Yinchuan 750004, China
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Sirtuins and neuropeptide y downregulation in Flinders Sensitive Line rat model of depression. Acta Neuropsychiatr 2022; 34:86-92. [PMID: 34666848 DOI: 10.1017/neu.2021.36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Since the NAD+-dependent histone deacetylases sirtuin-1 (SIRT1) and sirtuin-2 (SIRT2) are critically involved in epigenetics, endocrinology and immunology and affect the longevity in model organisms, we investigated their expression in brains of 3-month-old and 14-15 months old rat model of depression Flinders Sensitive Line (FSL) and control Flinders Resistant Line (FRL) rats. In view of the dysregulated NPY system in depression, we also studied NPY in young and old FSL to explore the temporal trajectory of depressive-like-ageing interaction. Sirt1, Sirt2 and Npy mRNA were determined using qRT-PCR in prefrontal cortex (PFC) from young and old FSL and FRL, and in hippocampi from young FSL and FRL. PFC: Sirt1 expression was decreased in FSL (p = 0.001). An interaction between age and genotype was found (p = 0.032); young FSL had lower Sirt1 with respect to both age (p = 0.026) and genotype (p = 0.001). Sirt2 was lower in FSL (p = 0.003). Npy mRNA was downregulated in FSL (p = 0.001) but did not differ between the young and old rat groups. Hippocampus: Sirt1 was reduced in young FSL compared to young FRL (p = 0.005). There was no difference in Sirt2 between FSL and FRL. Npy levels were decreased in hippocampus of young FSL compared to young FRL (p = 0.003). Effects of ageing could not be investigated due to loss of samples. To conclude, i this is the first demonstration that SIRT1 and SIRT2 are changed in brain of FSL, a rat model of depression; ii the changes are age-dependent; iii sirtuins are potential targets for treatment of age-related neurodegenerative diseases.
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Du T, Li G, Luo H, Pan Y, Xu Q, Ma K. Hippocampal alpha-synuclein mediates depressive-like behaviors. Brain Behav Immun 2021; 95:226-237. [PMID: 33775831 DOI: 10.1016/j.bbi.2021.03.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/28/2021] [Accepted: 03/22/2021] [Indexed: 02/08/2023] Open
Abstract
Alpha-synuclein (α-syn) which encoded by SNCA plays a critical role in the neurotransmission, vesicle dynamics, and neuroplasticity. Alteration to SNCA expression is associated with major depressive disorder. However, the pathogenic mechanism of SNCA in depression remains unknown. Herein, we reported that SNCA was up-regulated in the peripheral blood of major depressive disorder (MDD) patients and the depressive mice. Chronic restraint stress (CRS) also up-regulated the SNCA expression in the hippocampus. Moreover, over-expression of SNCA in the hippocampus triggered spontaneous depressive-like behaviors under the non-stressed conditions in mice, and knockout of SNCA could reverse CRS-induced depressive-like behaviors. SNCA led to synapse loss and neuronal cell death in the hippocampus possibly via complement-mediated microglial engulfment and inflammation, and thus contributed to the pathogenesis of depressive disorder. Overall, hippocampal SNCA and complement system are involved in the pathogenesis of depressive disorder and it provides a new perspective for the occurrence of depressive disorder.
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Affiliation(s)
- Tingfu Du
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China; Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China.
| | - Guoxiang Li
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China.
| | - Haiyu Luo
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China.
| | - Yue Pan
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China.
| | - Qi Xu
- Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China; Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100005 China.
| | - Kaili Ma
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China; Neuroscience Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China.
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Tang W, Liu H, Chen L, Zhao K, Zhang Y, Zheng K, Zhu C, Zheng T, Liu J, Wang D, Yu L, Fang X, Zhang C, Su KP. Inflammatory cytokines, complement factor H and anhedonia in drug-naïve major depressive disorder. Brain Behav Immun 2021; 95:238-244. [PMID: 33794316 DOI: 10.1016/j.bbi.2021.03.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/17/2021] [Accepted: 03/27/2021] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVE Anhedonia is a core symptom of major depressive disorder (MDD) and often associated with poor prognosis. The main objective of the present study was to explore the relationship between complement factor H (CFH), inflammatory cytokines and anhedonia in drug-naïve MDD patients. METHODS A total of 215 participants (61 MDD patients with anhedonia, 78 MDD patients without anhedonia, and 76 control subjects) were included. Severity of depression and levels of anhedonia were evaluated by Hamilton Rating Scale for Depression-17 (HAMD-17) and SHAPS (Snaith-Hamilton Pleasure Scale). Plasma levels of CFH, interleukin-6 (IL-6), IL-10 and tumor necrosis factor-α (TNF-α) were measured. RESULTS The plasma levels of CFH, IL-10 and TNF-α were higher in drug-naïve MDD patients than control subjects. Compared to MDD patients without anhedonia, patients with anhedonia showed higher levels of CFH and IL-6. The stepwise regression analysis revealed that IL-10, TNF-α, as well as IL-10 × TNF-α were associated with depressive symptoms measured by HAMD-17 in drug-naïve MDD patients, while only CFH levels were identified as a mediator factor for the severity of anhedonia in the patients. CONCLUSION MDD patients with anhedonia showed different inflammatory characteristics compared to patients without anhedonia. Our results provide novel evidence suggesting that increased plasma CFH levels may be a potential biomarker of anhedonia of subtyping MDD.
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Affiliation(s)
- Wei Tang
- The Affiliated Kangning Hospital of Wenzhou Medical University, Wenzhou, China; Affiliated Nanjing Brain Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Hongyang Liu
- The Affiliated Kangning Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lixian Chen
- Second People's Hospital of Yuhuan, Zhejiang, China
| | - Ke Zhao
- Department of Psychiatry, School of Mental Health, Wenzhou Medical University, Wenzhou, China
| | - Yaoyao Zhang
- Department of Psychiatry, School of Mental Health, Wenzhou Medical University, Wenzhou, China
| | - Ke Zheng
- The Affiliated Kangning Hospital of Wenzhou Medical University, Wenzhou, China
| | - Cheng Zhu
- The Affiliated Kangning Hospital of Wenzhou Medical University, Wenzhou, China
| | - Tiansheng Zheng
- The Affiliated Kangning Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jiahong Liu
- The Affiliated Kangning Hospital of Wenzhou Medical University, Wenzhou, China
| | - Dandan Wang
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lingfang Yu
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xinyu Fang
- Affiliated Nanjing Brain Hospital, Nanjing Medical University, Nanjing, Jiangsu, China.
| | - Chen Zhang
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Kuan-Pin Su
- Department of Psychiatry & Mind-Body Interface Laboratory (MBI-Lab), China Medical University Hospital, Taichung, Taiwan; An-Nan Hospital, China Medical University, Tainan, Taiwan; Institute of Psychiatry, King's College London, London, UK.
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Rajewska-Rager A, Dmitrzak-Weglarz M, Kapelski P, Lepczynska N, Pawlak J, Twarowska-Hauser J, Skibinska M. Longitudinal assessment of S100B serum levels and clinical factors in youth patients with mood disorders. Sci Rep 2021; 11:11973. [PMID: 34099858 PMCID: PMC8184924 DOI: 10.1038/s41598-021-91577-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 05/25/2021] [Indexed: 11/25/2022] Open
Abstract
Mood disorders have been discussed as being in relation to glial pathology. S100B is a calcium-binding protein, and a marker of glial dysfunctions. Although alterations in the S100B expression may play a role in various central nervous system diseases, there are no studies on the potential role of S100B in mood disorders in adolescents and young adults . In a prospective two-year follow-up study, peripheral levels of S100B were investigated in 79 adolescent/young adult patients (aged 14–24 years), diagnosed with mood disorders and compared with 31 healthy control subjects. A comprehensive clinical interview was conducted which focused on clinical symptoms and diagnosis change. The diagnosis was established and verified at each control visit. Serum S100B concentrations were determined. We detected: lower S100B levels in medicated patients, compared with those who were drug-free, and healthy controls; higher S100B levels in a depressed group with a family history of affective disorder; correlations between age and medication status; sex-dependent differences in S100B levels; and lack a of correlation between the severity of depressive or hypo/manic symptoms. The results of our study indicate that S100B might be a trait-dependent rather than a state-dependent marker. Due to the lack of such studies in the youth population, further research should be performed. A relatively small sample size, a lack of exact age-matched control group, a high drop-out rate.
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Affiliation(s)
- Aleksandra Rajewska-Rager
- Department of Psychiatric Genetics, Chair of Psychiatry, Poznan University of Medical Sciences, Rokietnicka 8, 60-806, Poznan, Poland
| | - Monika Dmitrzak-Weglarz
- Department of Psychiatric Genetics, Chair of Psychiatry, Poznan University of Medical Sciences, Rokietnicka 8, 60-806, Poznan, Poland
| | - Pawel Kapelski
- Department of Psychiatric Genetics, Chair of Psychiatry, Poznan University of Medical Sciences, Rokietnicka 8, 60-806, Poznan, Poland
| | - Natalia Lepczynska
- Department of Child and Adolescent Psychiatry, Karol Jonscher Clinical Hospital, Poznan University of Medical Sciences, Szpitalna 27/33 St, 60-572, Poznań, Poland
| | - Joanna Pawlak
- Department of Psychiatric Genetics, Chair of Psychiatry, Poznan University of Medical Sciences, Rokietnicka 8, 60-806, Poznan, Poland
| | - Joanna Twarowska-Hauser
- Department of Psychiatric Genetics, Chair of Psychiatry, Poznan University of Medical Sciences, Rokietnicka 8, 60-806, Poznan, Poland
| | - Maria Skibinska
- Department of Psychiatric Genetics, Chair of Psychiatry, Poznan University of Medical Sciences, Rokietnicka 8, 60-806, Poznan, Poland.
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Tao H, Chen X, Zhou H, Fu J, Yu Q, Liu Y. Changes of Serum Melatonin, Interleukin-6, Homocysteine, and Complement C3 and C4 Levels in Patients With Depression. Front Psychol 2020; 11:1271. [PMID: 32655450 PMCID: PMC7324806 DOI: 10.3389/fpsyg.2020.01271] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 05/14/2020] [Indexed: 12/26/2022] Open
Abstract
Objectives Cytokine activation and low complement levels are common in depression patients. This study is aimed at investigating the clinical significance of changes in serum concentrations of melatonin (MT), interleukin-6 (IL-6), homocysteine (hcy), and complement C3 and C4 in depression patients and relationships of them with depression activity. Methods A total of 95 depression patients, including first-episode group (n = 43) and recurrent group (n = 52), and 45 age- and gender-matched healthy controls (HC) were recruited. Serum levels of MT, IL-6, hcy, C3, and C4 in all samples were measured by using enzyme-linked immunosorbent assay (ELISA), chemiluminescence method, enzyme circulation method, and immuno-scatter turbidimetric assay, respectively. Results The serum MT, IL-6, and hcy levels in the first-episode group (113.08 ± 5.06 pg/ml, 2.06 ± 0.12 ng/L, and 13.87 ± 0.45 μmol/L), and recurrent group (117.63 ± 4.63 pg/ml, 2.20 ± 0.12 ng/L, and 13.61 ± 0.46 μmol/L) were significantly higher than those in the control group (89.50 ± 5.10 pg/ml, 1.57 ± 0.06 ng/L, and 11.34 ± 0.40 μmol/L). The serum levels of C3 in the first-episode group (0.95 ± 0.02 ng/L) were significantly lower than those in the recurrent group (1.05 ± 0.03 ng/L) and control group (1.12 ± 0.03 ng/L). There was no significant difference in serum C4 level between each group. Conclusion These results suggest that higher serum MT, IL-6, and hcy levels were correlated with pathogenesis of depression.
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Affiliation(s)
- Huai Tao
- School of Medicine, Hunan University of Chinese Medicine, Changsha, China
| | - Xia Chen
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Hongfei Zhou
- School of Medicine, Hunan University of Chinese Medicine, Changsha, China
| | - Jinhua Fu
- Department of Psychiatry, Hunan Provincial Brain Hospital, Changsha, China
| | - Qi Yu
- School of Medicine, Hunan University of Chinese Medicine, Changsha, China
| | - Yong Liu
- National Clinical Research Center for Mental Disorders, Department of Psychaitry, The Second Xiangya Hospital of Central South University, China National Technology Institute on Mental Disorders, Hunan Key Laboratory of Psychiatry and Mental Health, Changsha, China
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Kalinichenko LS, Kornhuber J, Müller CP. Individual differences in inflammatory and oxidative mechanisms of stress-related mood disorders. Front Neuroendocrinol 2019; 55:100783. [PMID: 31415777 DOI: 10.1016/j.yfrne.2019.100783] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 08/05/2019] [Accepted: 08/09/2019] [Indexed: 12/16/2022]
Abstract
Emotional stress leads to the development of peripheral disorders and is recognized as a modifiable risk factor for psychiatric disorders, particularly depression and anxiety. However, not all individuals develop the negative consequences of emotional stress due to different stress coping strategies and resilience to stressful stimuli. In this review, we discuss individual differences in coping styles and the potential mechanisms that contribute to individual vulnerability to stress, such as parameters of the immune system and oxidative state. Initial differences in inflammatory and oxidative processes determine resistance to stress and stress-related disorders via the alteration of neurotransmitter content in the brain and biological fluids. Differences in coping styles may serve as possible predictors of resistance to stress and stress-related disorders, even before stressful conditions. The investigation of natural variabilities in stress resilience may allow the development of new methods for preventive medicine and the personalized treatment of stress-related conditions.
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Affiliation(s)
- L S Kalinichenko
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander-University of Erlangen-Nuremberg, Schwabachanlage 6, 91054 Erlangen, Germany.
| | - J Kornhuber
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander-University of Erlangen-Nuremberg, Schwabachanlage 6, 91054 Erlangen, Germany
| | - C P Müller
- Department of Psychiatry and Psychotherapy, University Clinic, Friedrich-Alexander-University of Erlangen-Nuremberg, Schwabachanlage 6, 91054 Erlangen, Germany
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De Luca C, Colangelo AM, Alberghina L, Papa M. Neuro-Immune Hemostasis: Homeostasis and Diseases in the Central Nervous System. Front Cell Neurosci 2018; 12:459. [PMID: 30534057 PMCID: PMC6275309 DOI: 10.3389/fncel.2018.00459] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 11/12/2018] [Indexed: 01/08/2023] Open
Abstract
Coagulation and the immune system interact in several physiological and pathological conditions, including tissue repair, host defense, and homeostatic maintenance. This network plays a key role in diseases of the central nervous system (CNS) by involving several cells (CNS resident cells, platelets, endothelium, and leukocytes) and molecular pathways (protease activity, complement factors, platelet granule content). Endothelial damage prompts platelet activation and the coagulation cascade as the first physiological step to support the rescue of damaged tissues, a flawed rescuing system ultimately producing neuroinflammation. Leukocytes, platelets, and endothelial cells are sensitive to the damage and indeed can release or respond to chemokines and cytokines (platelet factor 4, CXCL4, TNF, interleukins), and growth factors (including platelet-derived growth factor, vascular endothelial growth factor, and brain-derived neurotrophic factor) with platelet activation, change in capillary permeability, migration or differentiation of leukocytes. Thrombin, plasmin, activated complement factors and matrix metalloproteinase-1 (MMP-1), furthermore, activate intracellular transduction through complement or protease-activated receptors. Impairment of the neuro-immune hemostasis network induces acute or chronic CNS pathologies related to the neurovascular unit, either directly or by the systemic activation of its main steps. Neurons, glial cells (astrocytes and microglia) and the extracellular matrix play a crucial function in a “tetrapartite” synaptic model. Taking into account the neurovascular unit, in this review we thoroughly analyzed the influence of neuro-immune hemostasis on these five elements acting as a functional unit (“pentapartite” synapse) in the adaptive and maladaptive plasticity and discuss the relevance of these events in inflammatory, cerebrovascular, Alzheimer, neoplastic and psychiatric diseases. Finally, based on the solid reviewed data, we hypothesize a model of neuro-immune hemostatic network based on protein–protein interactions. In addition, we propose that, to better understand and favor the maintenance of adaptive plasticity, it would be useful to construct predictive molecular models, able to enlighten the regulating logic of the complex molecular network, which belongs to different cellular domains. A modeling approach would help to define how nodes of the network interact with basic cellular functions, such as mitochondrial metabolism, autophagy or apoptosis. It is expected that dynamic systems biology models might help to elucidate the fine structure of molecular events generated by blood coagulation and neuro-immune responses in several CNS diseases, thereby opening the way to more effective treatments.
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Affiliation(s)
- Ciro De Luca
- Laboratory of Morphology of Neuronal Network, Department of Public Medicine, University of Campania-Luigi Vanvitelli, Naples, Italy
| | - Anna Maria Colangelo
- Laboratory of Neuroscience "R. Levi-Montalcini", Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy.,SYSBIO Centre of Systems Biology, University of Milano-Bicocca, Milan, Italy
| | - Lilia Alberghina
- Laboratory of Neuroscience "R. Levi-Montalcini", Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy.,SYSBIO Centre of Systems Biology, University of Milano-Bicocca, Milan, Italy
| | - Michele Papa
- Laboratory of Morphology of Neuronal Network, Department of Public Medicine, University of Campania-Luigi Vanvitelli, Naples, Italy.,SYSBIO Centre of Systems Biology, University of Milano-Bicocca, Milan, Italy
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Michetti F, D'Ambrosi N, Toesca A, Puglisi MA, Serrano A, Marchese E, Corvino V, Geloso MC. The S100B story: from biomarker to active factor in neural injury. J Neurochem 2018; 148:168-187. [DOI: 10.1111/jnc.14574] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 07/19/2018] [Accepted: 08/15/2018] [Indexed: 02/06/2023]
Affiliation(s)
- Fabrizio Michetti
- Institute of Anatomy and Cell Biology; Università Cattolica del Sacro Cuore; Rome Italy
- IRCCS San Raffaele Scientific Institute; Università Vita-Salute San Raffaele; Milan Italy
| | - Nadia D'Ambrosi
- Department of Biology; Università degli Studi di Roma Tor Vergata; Rome Italy
| | - Amelia Toesca
- Institute of Anatomy and Cell Biology; Università Cattolica del Sacro Cuore; Rome Italy
| | | | - Alessia Serrano
- Institute of Anatomy and Cell Biology; Università Cattolica del Sacro Cuore; Rome Italy
| | - Elisa Marchese
- Institute of Anatomy and Cell Biology; Università Cattolica del Sacro Cuore; Rome Italy
| | - Valentina Corvino
- Institute of Anatomy and Cell Biology; Università Cattolica del Sacro Cuore; Rome Italy
| | - Maria Concetta Geloso
- Institute of Anatomy and Cell Biology; Università Cattolica del Sacro Cuore; Rome Italy
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Abildgaard A, Elfving B, Hokland M, Lund S, Wegener G. Probiotic treatment protects against the pro-depressant-like effect of high-fat diet in Flinders Sensitive Line rats. Brain Behav Immun 2017; 65:33-42. [PMID: 28450222 DOI: 10.1016/j.bbi.2017.04.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 04/10/2017] [Accepted: 04/23/2017] [Indexed: 12/18/2022] Open
Abstract
Major depressive disorder (MDD) is highly associated with dysmetabolic conditions, such as obesity and diabetes mellitus type 2, and the gut microbiota may interact with both disease entities. We have previously shown that a high-fat diet (HFD) exacerbated depressive-like behaviour uniquely in Flinders Sensitive Line (FSL) rats that inherently present with an increased level of depressive-like behaviour compared with Flinders Resistant Line (FRL) rats. We therefore investigated whether multispecies probiotics possessed anti-depressant-like effect in FSL rats or protected against the pro-depressant-like effect of HFD. We also examined blood and cerebral T cell subsets as well as plasma cytokines. Lastly, we investigated the effect of HFD in outbred Sprague-Dawley (SD) rats to substantiate the association between depressive-like behaviour and any immunological measures affected by HFD. HFD exacerbated the depressive-like behaviour in FSL rats in the forced swim test, whereas SD rats remained unaffected. Probiotic treatment completely precluded the pro-depressant-like effect of HFD, but it did not affect FSL rats on control diet. Cerebral T lymphocyte CD4/8 ratios closely mirrored the behavioural changes, whereas the proportions of Treg and Th17 subsets were unaltered. No association between blood and brain CD4/8 ratios were evident; nor did plasma cytokine levels change as a consequence of HFD of probiotic treatment. Our findings suggest that MDD may hold a dysmetabolic component that responds to probiotic treatment. This finding has wide implications owing to the high metabolic comorbidity in MDD. Furthermore, the close association between depressive-like behaviour and cerebral T cell populations demonstrate lymphocyte-brain interactions as a promising future research area in the field of psychoneuroimmunology.
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Affiliation(s)
- Anders Abildgaard
- Translational Neuropsychiatry Unit, Aarhus University, Skovagervej 2, 8240 Risskov, Denmark; Department of Clinical Biochemistry, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark.
| | - Betina Elfving
- Translational Neuropsychiatry Unit, Aarhus University, Skovagervej 2, 8240 Risskov, Denmark
| | - Marianne Hokland
- Department of Biomedicine, Aarhus University, Bartholins Allé 6, Build. 1242, 8000 Aarhuc C, Denmark
| | - Sten Lund
- Department of Medical Endocrinology (MEA), Aarhus University Hospital, Nørrebrogade 44, 8000 Aarhus C, Denmark
| | - Gregers Wegener
- Translational Neuropsychiatry Unit, Aarhus University, Skovagervej 2, 8240 Risskov, Denmark; Center of Excellence for Pharmaceutical Sciences, North-West University (Potchefstroom Campus), Hoffman Street, Potchefstroom 2520, South Africa
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Antidepressant Mechanism Research of Acupuncture: Insights from a Genome-Wide Transcriptome Analysis of Frontal Cortex in Rats with Chronic Restraint Stress. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:1676808. [PMID: 29098013 PMCID: PMC5634580 DOI: 10.1155/2017/1676808] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 07/12/2017] [Accepted: 07/26/2017] [Indexed: 01/15/2023]
Abstract
Major depressive disorder (MDD) is a chronic disease that adversely affects mood and cognition. In this study, we randomly divided the rats into control group (C), model group (M), fluoxetine group (F), and acupuncture group (A), used open-field test to ascertain whether acupuncture affects chronic restraint stress (CRS) induced depression-like behaviors of rats, and explored the antidepressant mechanism of acupuncture at the molecular level of transcriptome in the frontal cortex of CRS rats by RNA-sequencing (RNA-seq). According to differentially expressed genes (DEG) analysis, we identified 134, 46, and 89 response genes differentially expressed in C versus M, F versus M, and A versus M, respectively. Through Gene Ontology (GO) term enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis, we identified the gene sets involved in extracellular space, inflammatory response, Toll-like receptor signaling pathway, chemokine signaling pathway, and TNF signaling pathway. In this study, RNA-seq technology was used to investigate the frontal cortex genome-wide transcriptomes in depression rats under CRS, which suggested that the antidepressant effect of acupuncture is effective and has a multitarget characteristic, which may be related to amino acid metabolism and inflammatory pathways, especially the Toll-like receptor signaling pathway, TNF signaling pathway, and NF-kappa B signaling pathway.
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Wang Y, Jiang H, Meng H, Lu J, Li J, Zhang X, Yang X, Zhao B, Sun Y, Bao T. Genome-wide transcriptome analysis of hippocampus in rats indicated that TLR/NLR signaling pathway was involved in the pathogenisis of depressive disorder induced by chronic restraint stress. Brain Res Bull 2017; 134:195-204. [PMID: 28780410 DOI: 10.1016/j.brainresbull.2017.07.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 07/11/2017] [Accepted: 07/27/2017] [Indexed: 12/21/2022]
Abstract
Data from clinical investigations and laboratory fundings have provided preliminary evidence for the effectiveness and safety of acupuncture therapy in depression. However, the mechanisms underlying the antidepressant response of acupuncture are not fully elucidated. To elucidate the potential effects of acupuncture for depression on the hippocampal genome-wide transcriptome at the molecular level, we evaluated the transcriptomic profile of depression rats under treatment of acupuncture, and fluoxetine. We identified a very significant effect of acupucture intervention, with 107 genes differentially expressed in acupuncture vs. model group; while 41 genes between fluoxetine vs. model group. Notably, the 54 differentially expressed genes between acupuncture and fluoxetine showed the significantly different effect between acupuncture and fluoxetine. Through GO (gene ontology) functional term and KEGG (kyoto encyclopedia of genes and genomes) pathway analysis, we identified that the upregulation of gene sets were related to inflammatory response, innate immunity and immune response. We found that toll-like receptor signalling pathway and NOD like receptor signalling pathway were associated with the function of inflammatory response, innate immunity and immune response. Importantly, acupuncture reversed the upregulation of gene sets that were related to inflammatory response, innate immunity and immune response (including toll-like receptor signalling pathway and NOD like receptor signalling pathway), which might be critical for the pathogenesis of depression and provide evidence for the antidepressive effects of acupuncture by regulating inflammatory response, innate immunity and immune response via toll-like receptor signalling pathway and NOD like receptor signalling pathway.
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Affiliation(s)
- Yu Wang
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China; Research Center of Mental and Neurological Disorders, School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Huili Jiang
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China; Research Center of Mental and Neurological Disorders, School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Hong Meng
- School of Science, Beijing Technology and Business University, Beijing 102488, China
| | - Jun Lu
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China; Research Center of Mental and Neurological Disorders, School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Jing Li
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China; Research Center of Mental and Neurological Disorders, School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Xuhui Zhang
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China; Research Center of Mental and Neurological Disorders, School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Xinjing Yang
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China; Research Center of Mental and Neurological Disorders, School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Bingcong Zhao
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China; Research Center of Mental and Neurological Disorders, School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Yang Sun
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China; Research Center of Mental and Neurological Disorders, School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China
| | - Tuya Bao
- School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China; Research Center of Mental and Neurological Disorders, School of Acupuncture-Moxibustion and Tuina, Beijing University of Chinese Medicine, Beijing 100029, China.
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17
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Yu W, Huili J, Hong M, Jing L, Xinjing Y, Bingcong Z, Qiuyun Y, Xingchen L, Tuya B. Molecular-level effects of acupuncture on depression: a genome-wide transcriptome analysis of pituitary gland in rats exposed to chronic restraint stress. J TRADIT CHIN MED 2017. [DOI: 10.1016/s0254-6272(17)30155-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Grissom NM, George R, Reyes TM. Suboptimal nutrition in early life affects the inflammatory gene expression profile and behavioral responses to stressors. Brain Behav Immun 2017; 63:115-126. [PMID: 27756624 DOI: 10.1016/j.bbi.2016.10.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 10/06/2016] [Accepted: 10/14/2016] [Indexed: 12/15/2022] Open
Abstract
Nutritional conditions in early life can have a lasting impact on health and disease risk, though the underlying mechanisms are incompletely understood. In the healthy individual, physiological and behavioral responses to stress are coordinated in such a way as to mobilize resources necessary to respond to the stressor and to terminate the stress response at the appropriate time. Induction of proinflammatory gene expression within the brain is one such example that is initiated in response to both physiological and psychological stressors, and is the focus of the current study. We tested the hypothesis that early life nutrition would impact the proinflammatory transcriptional response to a stressor. Pregnant and lactating dams were fed one of three diets; a low-protein diet, a high fat diet, or the control diet through pregnancy and lactation. Adult male offspring were then challenged with either a physiological stressor (acute lipopolysaccharide injection, IP) or a psychological stressor (15 min restraint). Expression of 20 proinflammatory and stress-related genes was evaluated in hypothalamus, prefrontal cortex, amygdala and ventral tegmental area. In a second cohort, behavioral responses (food intake, locomotor activity, metabolic rate) were evaluated. Offspring from low protein fed dams showed a generally reduced transcriptional response, particularly to LPS, and resistance to behavioral changes associated with restraint, while HF offspring showed an exacerbated transcriptional response within the PFC, a reduced transcriptional response in hypothalamus and amygdala, and an exacerbation of the LPS-induced reduction of locomotor activity. The present data identify differential proinflammatory transcriptional responses throughout the brain driven by perinatal diet as an important variable that may affect risk or resilience to stressors.
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Affiliation(s)
- Nicola M Grissom
- University of Minnesota, Department of Psychology, Minneapolis, MN, USA
| | - Robert George
- University of Pennsylvania, Department of Pharmacology, Philadelphia, PA, USA
| | - Teresa M Reyes
- University of Cincinnati, Department of Psychiatry and Behavioral Neuroscience, Cincinnati, OH, USA.
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Abstract
OBJECTIVE There is a growing interest in the role of kynurenine pathway and tryptophan metabolites in the pathophysiology of depression. In the present study, the metabolism of tryptophan along the kynurenine pathway was analysed in a rat model of depression. METHODS Kynurenic acid (KYNA) and 3-hydroxykynurenine (3-HK) were measured by high-performance liquid chromatography (HPLC) in prefrontal cortex (PFC) and frontal cortex (FC) in a rat model of depression, the Flinders Sensitive Line (FSL) and their controls, the Flinders Resistant Line (FRL) rats. In addition, KYNA was also measured in hippocampus, striatum and cerebellum. RESULTS KYNA levels were reduced in the PFC of FSL rats compared with FRL rats, but did not differ with regard to the FC, hippocampus, striatum or cerebellum. 3-HK levels in PFC and FC, representing the activity of the microglial branch of the kynurenine pathway, did not differ between the FSL and FRL strains. CONCLUSION Our results suggest an imbalanced metabolism of the kynurenine pathway in the PFC of FSL rats.
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Elevation of Il6 is associated with disturbed let-7 biogenesis in a genetic model of depression. Transl Psychiatry 2016; 6:e869. [PMID: 27529677 PMCID: PMC5022082 DOI: 10.1038/tp.2016.136] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 05/12/2016] [Accepted: 06/19/2016] [Indexed: 12/30/2022] Open
Abstract
Elevation of the proinflammatory cytokine IL-6 has been implicated in depression; however, the mechanisms remain elusive. MicroRNAs (miRNAs) are small non-coding RNAs that inhibit gene expression post-transcriptionally. The lethal-7 (let-7) miRNA family was suggested to be involved in the inflammation process and IL-6 was shown to be one of its targets. In the present study, we report elevation of Il6 in the prefrontal cortex (PFC) of a genetic rat model of depression, the Flinders Sensitive Line (FSL) compared to the control Flinders Resistant Line. This elevation was associated with an overexpression of LIN28B and downregulation of let-7 miRNAs, the former an RNA-binding protein that selectively represses let-7 synthesis. Also DROSHA, a key enzyme in miRNA biogenesis was downregulated in FSL. Running was previously shown to have an antidepressant-like effect in the FSL rat. We found that running reduced Il6 levels and selectively increased let-7i and miR-98 expression in the PFC of FSL, although there were no differences in LIN28B and DROSHA expression. Pri-let-7i was upregulated in the running FSL group, which associated with increased histone H4 acetylation. In conclusion, the disturbance of let-7 family biogenesis may underlie increased proinflammatory markers in the depressed FSL rats while physical activity could reduce their expression, possibly through regulating primary miRNA expression via epigenetic mechanisms.
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Eskelund A, Budac DP, Sanchez C, Elfving B, Wegener G. Female Flinders Sensitive Line rats show estrous cycle-independent depression-like behavior and altered tryptophan metabolism. Neuroscience 2016; 329:337-48. [DOI: 10.1016/j.neuroscience.2016.05.024] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 05/11/2016] [Accepted: 05/11/2016] [Indexed: 01/28/2023]
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Ménard C, Hodes GE, Russo SJ. Pathogenesis of depression: Insights from human and rodent studies. Neuroscience 2015; 321:138-162. [PMID: 26037806 DOI: 10.1016/j.neuroscience.2015.05.053] [Citation(s) in RCA: 337] [Impact Index Per Article: 37.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 05/14/2015] [Accepted: 05/21/2015] [Indexed: 12/30/2022]
Abstract
Major depressive disorder (MDD) will affect one out of every five people in their lifetime and is the leading cause of disability worldwide. Nevertheless, mechanisms associated with the pathogenesis of MDD have yet to be completely understood and current treatments remain ineffective in a large subset of patients. In this review, we summarize the most recent discoveries and insights for which parallel findings have been obtained in human depressed subjects and rodent models of mood disorders in order to examine the potential etiology of depression. These mechanisms range from synaptic plasticity mechanisms to epigenetics and the immune system where there is strong evidence to support a functional role in the development of specific depression symptomology. Ultimately we conclude by discussing how novel therapeutic strategies targeting central and peripheral processes might ultimately aid in the development of effective new treatments for MDD and related stress disorders.
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Affiliation(s)
- C Ménard
- Fishberg Department of Neuroscience and the Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - G E Hodes
- Fishberg Department of Neuroscience and the Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - S J Russo
- Fishberg Department of Neuroscience and the Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
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Levkovitz Y, Fenchel D, Kaplan Z, Zohar J, Cohen H. Early post-stressor intervention with minocycline, a second-generation tetracycline, attenuates post-traumatic stress response in an animal model of PTSD. Eur Neuropsychopharmacol 2015; 25:124-32. [PMID: 25487770 DOI: 10.1016/j.euroneuro.2014.11.012] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 11/02/2014] [Accepted: 11/20/2014] [Indexed: 12/11/2022]
Abstract
We assessed the effects of minocycline, a tetracycline with anti-inflammatory, anti-apoptotic and neuroprotective capacities, in an animal model of post-traumatic stress disorder (PTSD). Rats were exposed to psychogenic stress and treated 1h later with minocycline or saline. Behavioral measures included the elevated plus-maze (EPM) and acoustic startle response (ASR) 7 days post stress-exposure. One day after behavioral testing, animals were exposed to a trauma cue and freezing response was assessed. Local levels of cytokines interleukin-1 (IL-1), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) in the hippocampus, frontal cortex (FC) and hypothalamus were then examined. Minocycline attenuated anxious-like behaviors in stress-exposed rats. In addition, decreased levels of cytokines were measured in exposed rats treated with minocycline compared to their counterparts treated with saline. This study suggests a potential use of minocycline in preventing physiological and behavioral alternations resulting from acute exposure to psychological stress. As this is the first study to report beneficial outcomes for minocycline treatment in an animal model of PTSD, further investigations of the use of minocycline in stress-related conditions with emphasis on PTSD is needed.
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Affiliation(s)
- Yechiel Levkovitz
- Beer-Yaakov Mental Health Center, Beer-Yaakov, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
| | - Daphna Fenchel
- Beer-Yaakov Mental Health Center, Beer-Yaakov, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Zeev Kaplan
- Beer-Sheva Mental Health Center, Ministry of Health, Anxiety and Stress Research Unit, Faculty of Health Sciences, Ben-Gurion University of the Negev, Israel
| | - Joseph Zohar
- Division of Psychiatry, Ministry of Health, The Chaim Sheba Medical Center, Tel Hashomer, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Hagit Cohen
- Beer-Sheva Mental Health Center, Ministry of Health, Anxiety and Stress Research Unit, Faculty of Health Sciences, Ben-Gurion University of the Negev, Israel
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