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Furlan R, Melloni E, Finardi A, Vai B, Di Toro S, Aggio V, Battistini L, Borsellino G, Manfredi E, Falini A, Colombo C, Poletti S, Benedetti F. Natural killer cells protect white matter integrity in bipolar disorder. Brain Behav Immun 2019; 81:410-421. [PMID: 31254622 DOI: 10.1016/j.bbi.2019.06.037] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 06/08/2019] [Accepted: 06/25/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Bipolar Disorder (BD) associates with disrupted white matter (WM) microstructure and functional connectivity, and with a perturbation of the immune system. Higher cytokines, and reduced T cells, correlated with WM disruption and fMRI responses. A core component of the innate immune system, natural killer (NK) cells were detected in brain parenchyma, but never studied in BD. METHODS We studied Diffusion Tensor Imaging (DTI) measures of water diffusion, fMRI corticolimbic functional response and connectivity, and multi-parameter cytofluorometry analysis of NK (CD56+) subpopulations, in 30 inpatients with active Bipolar Disorder type I. NK cells were also obtained in 36 healthy controls. RESULTS Patients had significantly higher circulating counts of CD56+GMCSF+, CD56+INFγ+, and CD56+IL17+. NK cell levels positively associated to fractional anisotropy (FA) measures. CD56+TNFα+, CD56+INFγ+, and CD56+GMCSF+ directly correlated with FA, and inversely with radial (RD) and mean (MD) diffusivity. Duration of lithium treatment associated with higher CD56+TNFα+, CD56+IL2+, and CD56+IL4+, and positively associated with FA in tracts were NKs had significant effects. A mediation model suggested a partial mediation of CD56+TNFα+ cells, higher in patients on lithium, on the effects of lithium on FA. Frequencies of the same cytokine-producing NK cells also influenced fMRI cortico-limbic functional connectivity during processing of both, emotional and non-emotional stimuli. DISCUSSION Higher circulating cytokine-producing NK cells associated with lithium treatment, and with DTI measures of WM integrity, partially mediating the effect of lithium on WM. The same cells associated with fMRI responses and connectivity, thus suggesting an effect on structural and functional connectomics in BD.
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Affiliation(s)
- Roberto Furlan
- Clinical Neuroimmunology Unit, Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Milano, Italy
| | - Elisa Melloni
- University Vita-Salute San Raffaele, Italy; Psychiatry & Clinical Psychobiology Unit, Division of Neuroscience, San Raffaele Scientific Institute, Milano, Italy
| | - Annamaria Finardi
- Clinical Neuroimmunology Unit, Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Milano, Italy
| | - Benedetta Vai
- University Vita-Salute San Raffaele, Italy; Psychiatry & Clinical Psychobiology Unit, Division of Neuroscience, San Raffaele Scientific Institute, Milano, Italy
| | - Sara Di Toro
- Clinical Neuroimmunology Unit, Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Milano, Italy
| | - Veronica Aggio
- University Vita-Salute San Raffaele, Italy; Psychiatry & Clinical Psychobiology Unit, Division of Neuroscience, San Raffaele Scientific Institute, Milano, Italy
| | | | | | | | - Andrea Falini
- University Vita-Salute San Raffaele, Italy; Department of Neuroradiology, San Raffaele Scientific Institute, Milano, Italy
| | - Cristina Colombo
- University Vita-Salute San Raffaele, Italy; Psychiatry & Clinical Psychobiology Unit, Division of Neuroscience, San Raffaele Scientific Institute, Milano, Italy
| | - Sara Poletti
- University Vita-Salute San Raffaele, Italy; Psychiatry & Clinical Psychobiology Unit, Division of Neuroscience, San Raffaele Scientific Institute, Milano, Italy
| | - Francesco Benedetti
- University Vita-Salute San Raffaele, Italy; Psychiatry & Clinical Psychobiology Unit, Division of Neuroscience, San Raffaele Scientific Institute, Milano, Italy.
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Merendino RA, Gangemi S, Ruello A, Bene A, Losi E, Lonbardo G, Purello-Dambrosio F. Serum Levels of Interleukin-18 and sICAM-1 in Patients Affected by Breast Cancer: Preliminary Considerations. Int J Biol Markers 2018; 16:126-9. [PMID: 11471895 DOI: 10.1177/172460080101600207] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Interleukin-18 (IL-18), a cytokine that plays an important role in the T-cell-helper type 1 response, acts as an angiogenesis and tumor suppressor. Intercellular adhesion molecule-1 (ICAM-1) has a potential role in immunoregulation by mediating immune cell infiltration into the tissue. The aim of this study was to evaluate IL-18 and soluble (s) ICAM-1 serum levels in breast cancer (BCa) patients with liver (BCaM1h) or bone (BCaM1b) metastases compared to BCa patients without metastases (BCaM0) and healthy donors (HDs). Furthermore, since IL-18 enhances ICAM-1 expression, we investigated whether there was a direct correlation between sICAM-1 and IL-18 serum levels. Serum IL-18 and sICAM-1 levels were assayed by immunoenzymatic methods. The serum sICAM-1 levels in the three groups of cancer patients were significantly higher (p<0.05) than those of HDs. Serum IL-18 levels were significantly higher (p<0.05) in BCaM1h and BCaM1b patients compared to BCaM0 patients and HDs. sICAM-1 proved to be closely correlated with serum IL-18 levels in HDs, whereas a weaker correlation was found in BCaM1h, BCaM1b and BCaM0 patients. The defective correlation between sICAM-1 and IL-18 found in cancer patients may contribute to our understanding of the immunity upset occurring in cancer. Our data suggest that IL-18, irrespective of its biological activity, could represent a marker for metastatic breast cancer.
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Affiliation(s)
- R A Merendino
- University of Messina Medical School, University Hospital G. Martino, Messina, Italy
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Proliferation and apoptosis of T lymphocytes in patients with bipolar disorder. Sci Rep 2018; 8:3327. [PMID: 29463875 PMCID: PMC5820246 DOI: 10.1038/s41598-018-21769-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 02/08/2018] [Indexed: 11/22/2022] Open
Abstract
The aim of the study was to evaluate proliferation capacity and susceptibility to apoptosis of T lymphocytes of patients with bipolar disorder (BD) and to investigate in vitro influence of two standard mood stabilizers: lithium and valproic acid on these parameters using flow cytometry. Our results show that T lymphocytes of BD patients, especially those treated with lithium, have reduced proliferation capacity compared to healthy people. In vitro studies showed that valproic acid reduces the number of cell divisions and percentages of proliferating cells regardless of health status but mainly in very high dose, while lithium has no significant influence on proliferation capacity of patients’ T lymphocytes. Lymphocytes of BD patients are also more prone to apoptosis compared with healthy individuals which is related to high expression of Bax, a pro-apoptotic protein. In vitro lithium protected patients’ lymphocytes from apoptosis proportionally to dose used. Valproic acid protected lymphocytes of patients from apoptosis mainly in therapeutic concentration. Our results show that mood stabilizers used to prevent relapses of the disease have anti-apoptotic effect on T lymphocytes of BD patients but they are not able to improve their proliferation capacity.
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Yang M, Yang BO, Gan H, Li X, Xu J, Yu J, Gao L, Li F. Anti-inflammatory effect of 1,25-dihydroxyvitamin D 3 is associated with crosstalk between signal transducer and activator of transcription 5 and the vitamin D receptor in human monocytes. Exp Ther Med 2015; 9:1739-1744. [PMID: 26136886 DOI: 10.3892/etm.2015.2321] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Accepted: 01/26/2015] [Indexed: 01/04/2023] Open
Abstract
1,25-Dihydroxyvitamin D3 (1,25-(OH)2D3) has an anti-inflammatory effect on human monocytes incubated with sera from patients with type 2 diabetes/diabetic nephropathy; however, the detailed mechanism behind the effect remains to be explored. The current study further validated the effects of 1,25-(OH)2D3 and lipopolysaccharide (LPS) + human recombinant interleukin (IL)-15 on the expression of the vitamin D receptor (VDR) and phosphorylated signal transducer and activator of transcription 5 (p-STAT5) in human monocytes and explored the possible interaction between VDR and p-STAT5. Synchronized THP-1 cells were divided into pre-intervened groups, namely the control, LPS + IL-15 and 1,25-(OH)2D3, groups, according to their differing treatments. The expression of STAT5 and p-STAT5 was evaluated by western blot analysis; the concentration of IL-6 in the supernatant was determined using an enzyme-linked immunosorbent assay; the expression of cytoskeletal proteins was observed using immunofluorescence and laser confocal microscopy; and the possible intranuclear interaction between VDR and p-STAT5 was investigated using immunofluorescence, immuno-coprecipitation and western blot analysis. LPS + IL-15 upregulated p-STAT5 expression and the IL-6 level (P<0.05), with cytoskeletal rearrangement. These effects were partially prevented through pretreatment with 1,25-(OH)2D3. The LPS + IL-15 group and the 1,25-(OH)2D3 group exhibited an interaction between p-STAT5 and VDR in the nucleus, with the latter group showing a significant increase compared with the former (P<0.05). The immuno-coprecipitation results provided evidence of the interaction between VDR and p-STAT5, which suggests the existence of STAT5-VDR crosstalk in THP-1 monocytes. Cytoskeletal rearrangement, VDR and p-STAT5 potentially have interactions in THP-1 monocytes. The anti-inflammatory effect of 1,25-(OH)2D3 may be associated with crosstalk between STAT5 and VDR, which further induces cytoskeletal rearrangement.
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Affiliation(s)
- Mengxue Yang
- Department of Endocrinology, First Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou 563000, P.R. China
| | - B O Yang
- Department of Endocrinology, First Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou 563000, P.R. China
| | - Hua Gan
- Department of Nephrology, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Xianwen Li
- Department of Endocrinology, First Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou 563000, P.R. China
| | - Jie Xu
- School of Public Health, Zunyi Medical College, Zunyi, Guizhou 563000, P.R. China
| | - Jie Yu
- School of Public Health, Zunyi Medical College, Zunyi, Guizhou 563000, P.R. China
| | - Lin Gao
- Department of Endocrinology, First Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou 563000, P.R. China
| | - Fengping Li
- Department of Endocrinology, First Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou 563000, P.R. China
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Abstract
One of the remarkable discoveries in the field of psychopharmacology from late 1940s is Lithium (Li) that reminds of old but still gold. It continues to be a distinctive mood stabilizer that matches various standards recommended for mood stabilizers. Apart from this Li is also known to affect immune cell functions. Lithium response and regulations of different immune cells in bipolar patients, related immune disorders are not well defined. Here, we provide an overview of literature with regard to Li's effects on different immune cells. However, the use of Li is currently limited to bipolar disorders and there is no empirical evidence for immune cell disorders. The objective of this article is to provide the evaluations of Li responses towards the different immune cells based on the existing studies. Further, more studies are needed to understand the mechanistic basis and heterogeneous responses of Li's effect in bipolar, also unravel relative immune disorders.
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Affiliation(s)
- Narendra Maddu
- Department of Biochemistry, Sri Krishnadevaraya University , Anantapur, Andhra Pradesh , India and
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Raghavendra PB, Lee E, Parameswaran N. Regulation of macrophage biology by lithium: a new look at an old drug. J Neuroimmune Pharmacol 2013; 9:277-84. [PMID: 24277481 DOI: 10.1007/s11481-013-9516-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 11/06/2013] [Indexed: 12/16/2022]
Abstract
Lithium (Li) continues to be a standard small compound used for the treatment of neurological disorders. Besides neuronal cells, Li is also known to affect immune cell function. In spite of its clinical use, potential mechanisms by which Li modulates immune cells, especially macrophages and its clinical relevance in bipolar patients are not well understood. Here, we provide an overview of the literature with regard to Li's effects on monocytes and macrophages. We have also included some of our results showing that Li differentially modulates chemokine gene expression in the absence and presence of Toll-like receptor-4 stimulation in a human macrophage model. Given that Li has a wide range of intracellular targets both in macrophages as well as in other cell types, more studies are needed to further understand the mechanistic basis of Li's effect in neurological and other inflammatory diseases. These studies could undoubtedly identify new therapeutic targets for treating such diseases.
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Affiliation(s)
- Pongali B Raghavendra
- Department of Physiology and Division of Human Pathology, Michigan State University, 2201 Biomedical Physical Sciences building, East Lansing, MI, 48823, USA
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