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Wang Y, Zhang Y, Yang Z, Zhang L, Chen X, Yang G, Zhan J, Li S, He F, Fan G. Mesoporous silica-based nanocarriers with dual response to pH and ROS for enhanced anti-inflammation therapy of 5-demethylnobiletin against psoriasis-like lesions. Int J Pharm 2023; 645:123373. [PMID: 37673281 DOI: 10.1016/j.ijpharm.2023.123373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 08/11/2023] [Accepted: 09/03/2023] [Indexed: 09/08/2023]
Abstract
Psoriasis is an inflammatory skin disease accompanied with chronic papulosquamous lesions and multiple comorbidities that considerably affect patients' quality of life. In order to develop an enhanced therapeutic strategy for psoriasis, 5-demethylnobiletin (5-DN), a kind of polymethoxyflavones (PMFs) with high anti-inflammatory activity, was delivered in vitro and in vivo by the nanocarrier of mesoporous silica nanoparticles (MSNs) both in the human keratinocytes HaCaT cell line and the mouse model with psoriasis-like lesions. The drug-loaded nanocarrier system (MSNs@5-DN) significantly improved the biocompatibility and bioavailability of 5-DN. Investigations at cell biological, histopathological, and molecular levels revealed the pharmacological mechanism of the drug delivery system, including the inhibition of inflammatory responses by downregulating the proinflammatory cytokine levels of tumor necrosis factor α (TNF-α) and interleukin-6 (IL-6). The upregulation of anti‑inflammatory cytokine of transforming growth factor-β1 (TGF-β1) and microRNA-17-5p, a critical regulator of the PTEN/AKT pathway, was also observed. The psoriasis-like lesions were markedly ameliorated in the mouse models treated with MSNs@5-DN. The designed drug-loading system shows an enhanced therapeutic outcome for psoriasis-like lesion compared with free 5-DN. This study revealed the synergistic effect of functionalized MSNs loaded with PMFs on the clinical treatment of human psoriasis.
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Affiliation(s)
- Yimin Wang
- Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization, College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang 438000, PR China
| | - Yanan Zhang
- College of Chemistry and Chemical Engineering, Huanggang Normal University, Huanggang 438000, PR China
| | - Zhihui Yang
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, PR China
| | - Lei Zhang
- Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization, College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang 438000, PR China
| | - Xiangping Chen
- Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization, College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang 438000, PR China
| | - Guliang Yang
- National Research Center of Rice Deep Process and Byproducts, Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha 410004, Hunan, PR China
| | - Jianfeng Zhan
- Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization, College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang 438000, PR China
| | - Shiming Li
- Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization, College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang 438000, PR China; Department of Food Science, Rutgers University, New Brunswick, NJ 08901, USA
| | - Feng He
- Li Shizhen College of Traditional Chinese Medicine, Huanggang Normal University, Huanggang 438000, PR China.
| | - Guanwei Fan
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, PR China.
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Hsieh CY, Rajanbabu V, Pan CY, Chen JY. Transcriptome analysis reveals modulation of differentially expressed genes in LPS-treated mouse macrophages (RAW264.7 cells) by grouper (Epinephelus coioides) Epinecidin-1. FISH & SHELLFISH IMMUNOLOGY 2023:108880. [PMID: 37327978 DOI: 10.1016/j.fsi.2023.108880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 05/28/2023] [Accepted: 06/02/2023] [Indexed: 06/18/2023]
Abstract
The marine antimicrobial peptide Epinecidin (Epi)-1 has been shown to exert direct antimicrobial and immunomodulatory actions in teleost, mammalian and avian organisms. For instance, Epi-1 can suppress bacterial endotoxin lipolysachcharide (LPS)-induced proinflammatory cytokines in RAW264.7 murine macrophages. However, it remains unknown how Epi-1 might broadly affect non-activated and LPS-activated macrophages. To address this question, we performed a comparative transcriptomic analysis of non-treated and LPS-treated RAW264.7 cells in the presence and absence of Epi-1. Gene enrichment analysis was conducted on filtered reads, followed by GO and KEGG analyses. The results showed that Epi-1 treatment modulated pathways and genes associated with nucleoside binding, intramolecular oxidoreductase activity, GTPase activity, peptide antigen binding, GTP binding, ribonucleoside/nucleotide binding, phosphatidylinositol binding and phosphatidylinositol-4-phosphate binding. Based on the GO analysis results, we performed real-time PCR at different treatment times to compare expression levels of selected proinflammatory cytokines, anti-inflammatory cytokines, MHC, proliferation and differentiation genes. Epi-1 decreased expression of the proinflammatory cytokines, TNF-α, IL-6 and IL-1β, and it increased the anti-inflammatory cytokine TGFβ and Sytx1. MHC-associated genes, GM7030, Arfip1, Gpb11 and Gem, were induced by Epi-1, which is expected to enhance the immune response against LPS. Immunoglobulin-associated Nuggc was also upregulated by Epi-1. Finally, we found that Epi-1 downregulated the expression of host defense peptides CRAMP, Leap2 and BD3. Taken together, these findings suggest that Epi-1 treatment induces orchestrated changes in the transcriptome of LPS-stimulated RAW264.7 cells.
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Affiliation(s)
- Chu-Yi Hsieh
- Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, 23-10 Dahuen Road, Jiaushi, Ilan, 262, Taiwan
| | - Venugopal Rajanbabu
- Anbil Dharmalingam Agricultural College and Research Institute, Tamil Nadu Agricultural University, Tiruchchirapalli, 620027, Tamil Nadu, India
| | - Chieh-Yu Pan
- Department and Graduate Institute of Aquaculture, National Kaohsiung University of Science and Technology, Kaohsiung, 811, Taiwan.
| | - Jyh-Yih Chen
- Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, 23-10 Dahuen Road, Jiaushi, Ilan, 262, Taiwan; The iEGG and Animal Biotechnology Center and the Rong Hsing Research Center for Translational Medicine, National Chung Hsing University, Taichung, 402, Taiwan.
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3
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Shen Y, Li X, Bao Y, Zhu T, Wu Z, Yang B, Jiao L, Zhou Q, Jin M. Lipid metabolic disorders and physiological stress caused by a high-fat diet have lipid source-dependent effects in juvenile black seabream Acanthopagrus schlegelii. FISH PHYSIOLOGY AND BIOCHEMISTRY 2022; 48:955-971. [PMID: 35771297 DOI: 10.1007/s10695-022-01095-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/24/2022] [Indexed: 06/15/2023]
Abstract
This study was conducted to evaluate the effects of different dietary lipid sources on growth performance, lipid metabolism, and physiological stress responses including oxidative stress (OS) and endoplasmic reticulum stress (ERS) of juvenile Acanthopagrus schlegelii (initial weight 0.88 ± 0.01 g) fed a high-fat diet (HFD). Four isonitrogenous and isolipidic experimental diets containing different lipid sources were formulated: fish oil (FO), palm oil (PO), linseed oil (LO), and soybean oil (SO), respectively. Results indicated that fish fed HFD supplemented with FO significantly improved growth than SO treatment. The high concentrations of aspartate aminotransferase and alanine transaminase were found in HFD supplemented with SO. Fish fed dietary LO supplementation showed significantly lower serum cholesterol, triglyceride, low-density lipoprotein, and high-density lipoprotein contents than those in SO group. Likewise, hepatic paraffin section analysis indicated that HFD with PO or SO supplementation increased fat drop. The expression levels of peroxisome proliferators-activated receptor alpha (pparα) and silent regulator 1 (sirt1) were significantly elevated by HFD with FO or LO supplementation. Additionally, the key marker of OS malonaldehyde was significantly increased in FO and SO groups. ERS-related genes were activated in dietary PO or SO supplementation and, hence, triggering inflammation and apoptosis by promoting the expression levels of nuclear factor kappa B (nf-κb) and c-Jun N-terminal kinase (jnk). Overall, the present study reveals that lipid metabolic disorders and physiological stress caused by a HFD have significant lipid source-dependent effects, which have important guiding significance for the use of HFD in marine fish.
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Affiliation(s)
- Yuedong Shen
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo, 315211, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315211, China
| | - Xuejiao Li
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo, 315211, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315211, China
| | - Yangguang Bao
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo, 315211, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315211, China
| | - Tingting Zhu
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo, 315211, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315211, China
| | - Zhaoxun Wu
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo, 315211, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315211, China
| | - Bingqian Yang
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo, 315211, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315211, China
| | - Lefei Jiao
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo, 315211, China
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315211, China
| | - Qicun Zhou
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo, 315211, China.
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315211, China.
| | - Min Jin
- Laboratory of Fish and Shellfish Nutrition, School of Marine Sciences, Ningbo University, Ningbo, 315211, China.
- Key Laboratory of Aquacultural Biotechnology Ministry of Education, Ningbo University, Ningbo, 315211, China.
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Konakov MV, Teplov IY, Levin SG, Nenov MN. Anti-hypoxic effect of interleukin-10 in hippocampal neurons is mediated by modulation of TASK-1 and TASK-3 channels activity. Biochem Biophys Res Commun 2022; 615:17-23. [DOI: 10.1016/j.bbrc.2022.05.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 05/14/2022] [Indexed: 11/17/2022]
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Bormann D, Stojanovic T, Cicvaric A, Schuld GJ, Cabatic M, Ankersmit HJ, Monje FJ. miRNA-132/212 Gene-Deletion Aggravates the Effect of Oxygen-Glucose Deprivation on Synaptic Functions in the Female Mouse Hippocampus. Cells 2021; 10:1709. [PMID: 34359879 PMCID: PMC8306255 DOI: 10.3390/cells10071709] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/01/2021] [Accepted: 07/02/2021] [Indexed: 12/29/2022] Open
Abstract
Cerebral ischemia and its sequelae, which include memory impairment, constitute a leading cause of disability worldwide. Micro-RNAs (miRNA) are evolutionarily conserved short-length/noncoding RNA molecules recently implicated in adaptive/maladaptive neuronal responses to ischemia. Previous research independently implicated the miRNA-132/212 cluster in cholinergic signaling and synaptic transmission, and in adaptive/protective mechanisms of neuronal responses to hypoxia. However, the putative role of miRNA-132/212 in the response of synaptic transmission to ischemia remained unexplored. Using hippocampal slices from female miRNA-132/212 double-knockout mice in an established electrophysiological model of ischemia, we here describe that miRNA-132/212 gene-deletion aggravated the deleterious effect of repeated oxygen-glucose deprivation insults on synaptic transmission in the dentate gyrus, a brain region crucial for learning and memory functions. We also examined the effect of miRNA-132/212 gene-deletion on the expression of key mediators in cholinergic signaling that are implicated in both adaptive responses to ischemia and hippocampal neural signaling. miRNA-132/212 gene-deletion significantly altered hippocampal AChE and mAChR-M1, but not α7-nAChR or MeCP2 expression. The effects of miRNA-132/212 gene-deletion on hippocampal synaptic transmission and levels of cholinergic-signaling elements suggest the existence of a miRNA-132/212-dependent adaptive mechanism safeguarding the functional integrity of synaptic functions in the acute phase of cerebral ischemia.
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Affiliation(s)
- Daniel Bormann
- Center for Physiology and Pharmacology, Department of Neurophysiology and Neuropharmacology, Medical University of Vienna, Schwarzspanierstraße 17, 1090 Vienna, Austria; (D.B.); (T.S.); (G.J.S.); (M.C.)
- Laboratory for Cardiac and Thoracic Diagnosis, Department of Surgery, Regeneration and Applied Immunology, Medical University of Vienna, Research Laboratories Vienna General Hospital, Waehringer Guertel 18-20, 1090 Vienna, Austria;
- Division of Thoracic Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Tamara Stojanovic
- Center for Physiology and Pharmacology, Department of Neurophysiology and Neuropharmacology, Medical University of Vienna, Schwarzspanierstraße 17, 1090 Vienna, Austria; (D.B.); (T.S.); (G.J.S.); (M.C.)
| | - Ana Cicvaric
- Department of Psychiatry and Behavioral Sciences, Albert Einstein College of Medicine, New York, NY 10461, USA;
| | - Gabor J. Schuld
- Center for Physiology and Pharmacology, Department of Neurophysiology and Neuropharmacology, Medical University of Vienna, Schwarzspanierstraße 17, 1090 Vienna, Austria; (D.B.); (T.S.); (G.J.S.); (M.C.)
| | - Maureen Cabatic
- Center for Physiology and Pharmacology, Department of Neurophysiology and Neuropharmacology, Medical University of Vienna, Schwarzspanierstraße 17, 1090 Vienna, Austria; (D.B.); (T.S.); (G.J.S.); (M.C.)
| | - Hendrik Jan Ankersmit
- Laboratory for Cardiac and Thoracic Diagnosis, Department of Surgery, Regeneration and Applied Immunology, Medical University of Vienna, Research Laboratories Vienna General Hospital, Waehringer Guertel 18-20, 1090 Vienna, Austria;
- Division of Thoracic Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
- Aposcience AG, Dresdner Straße 87/A 21, 1200 Vienna, Austria
| | - Francisco J. Monje
- Center for Physiology and Pharmacology, Department of Neurophysiology and Neuropharmacology, Medical University of Vienna, Schwarzspanierstraße 17, 1090 Vienna, Austria; (D.B.); (T.S.); (G.J.S.); (M.C.)
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Wigner P, Saluk-Bijak J, Synowiec E, Miller E, Sliwinski T, Cichon N, Bijak M. Variation of Genes Encoding Tryptophan Catabolites Pathway Enzymes in Stroke. J Clin Med 2019; 8:jcm8122133. [PMID: 31817010 PMCID: PMC6947300 DOI: 10.3390/jcm8122133] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 11/25/2019] [Accepted: 11/27/2019] [Indexed: 11/16/2022] Open
Abstract
The abnormal activation of the tryptophan catabolites pathway (TRYCATs) is observed in patients suffering from cerebrovascular disease, including stroke. A previous study confirmed that lower bioavailability of tryptophan for serotonin synthesis was characterized in the patients during the acute stroke phase. Interestingly, according to various studies, polymorphisms of the genes involved in the TRYCATs pathway may modulate the risk of stroke occurrence. Therefore, this study aimed to investigate the association between the occurrence of TPH1, TPH2, KAT1, KAT2 and IDO1 polymorphisms and the risk of stroke development.The following 10 polymorphisms of the genes encoding enzymes of the TRYCATs pathway were selected: c.804-7C > A (rs10488682), c.-1668T > A (rs623580), c.803+221C > A (rs1800532), c.-173A > T (rs1799913) - TPH1, c.-1449C > A (rs7963803), and c.-844G > T (rs4570625) - TPH2. c.*456G > A of KAT1 (rs10988134), c.975-7T > C of KAT2 (rs1480544), c.-1849C > A (rs3824259) and c. -1493G > C (rs10089084) of IDO1. The study was carried out on DNA isolated from the peripheral blood taken from 107 patients after a stroke and 107 healthy volunteers. All DNA samples were genotyped using TaqMan probes. The genotypes of eight studied polymorphisms modulated the risk of stroke. No significant difference in genotype and allele frequencies of the c.804-7C > A -TPH1 (rs10488682) and c.*456G > A - KAT1 (rs10988134) polymorphisms were found between patients and controls. Having performed haplotype and gen-gen analyses, it was possible to determine that patients after a stroke and controls differed in terms of the frequency of selected genotypes and haplotypes. Among the studied polymorphisms, eight SNPs were linked with stroke risk modulation. The results obtained confirmed our hypothesis regarding the involvement of the TRYCATs pathway in the pathogenesis of stroke.
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Affiliation(s)
- Paulina Wigner
- Laboratory of Medical Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (P.W.)
| | - Joanna Saluk-Bijak
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Ewelina Synowiec
- Laboratory of Medical Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (P.W.)
| | - Elzbieta Miller
- Department of Neurological Rehabilitation, Medical University of Lodz, Poland, Milionowa 14, 93-113 Lodz, Poland;
| | - Tomasz Sliwinski
- Laboratory of Medical Genetics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland; (P.W.)
| | - Natalia Cichon
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Michal Bijak
- Department of General Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
- Correspondence: ; Tel.: +48-42-635-43-36
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Nenov MN, Malkov AE, Konakov MV, Levin SG. Interleukin-10 and transforming growth factor-β1 facilitate long-term potentiation in CA1 region of hippocampus. Biochem Biophys Res Commun 2019; 518:486-491. [PMID: 31434608 DOI: 10.1016/j.bbrc.2019.08.072] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 08/12/2019] [Indexed: 12/24/2022]
Abstract
It has been shown that pro-inflammatory cytokines preferentially attenuate long-term potentiation (LTP), at the same time the effect of anti-inflammatory cytokines on synaptic plasticity has not been fully studied yet. Here we studied the effect of two anti-inflammatory cytokines - interleukin-10 (IL-10) and transforming growth factor-β1 (TGF-β1) on long-term potentiation. It was found that exogenously added IL-10 as well as TGF-β1 were able to effectively facilitate LTP evoked with ether high frequency or theta burst stimulation protocols in CA1 area of hippocampus. Effectiveness of IL-10 and TGF-β1 on LTP varied depending on the concentration of used cytokine and type of tetanic stimulation protocol used for LTP induction. Overall the positive effect of studied cytokines on LTP was associated with their ability to increase basal synaptic strength at Schaffer collateral - CA1 synapse. At the same time IL-10 and TGF-β1 did not have any effect on short-term plasticity. Our results provide new evidence upon the modulatory effects that anti-inflammatory cytokines exert on synaptic plasticity further highlighting their potency as modulators of neuronal function.
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Affiliation(s)
- Miroslav N Nenov
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia; Alzheimer's Center at Temple, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, 19140, USA.
| | - Anton E Malkov
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia
| | - Maxim V Konakov
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia
| | - Sergey G Levin
- Institute of Theoretical and Experimental Biophysics of the Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia
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8
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Interleukin-10 Facilitates Glutamatergic Synaptic Transmission and Homeostatic Plasticity in Cultured Hippocampal Neurons. Int J Mol Sci 2019; 20:ijms20133375. [PMID: 31324059 PMCID: PMC6650830 DOI: 10.3390/ijms20133375] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 06/27/2019] [Accepted: 07/07/2019] [Indexed: 01/29/2023] Open
Abstract
Anti-inflammatory cytokines are known to exert neuroprotective action ameliorating aberrant neuronal network activity associated with inflammatory responses. Yet, it is still not fully understood if anti-inflammatory cytokines play a significant role in the regulation of synaptic activity under normal conditions. Thus, the aim of our study was to investigate the effect of Interleukin-10 (IL-10) on neuronal synaptic transmission and plasticity. For this we tested the effect of IL-10 on miniature excitatory postsynaptic currents (mEPSC) and intracellular Ca2+ responses using whole-cell patch clamp and fluorescence microscopy in 13–15 DIV primary hippocampal neuroglial culture. We found that IL-10 significantly potentiated basal glutamatergic excitatory synaptic transmission within 15 min after application. Obtained results revealed a presynaptic nature of the effect, as IL-10 in a dose-dependent manner significantly increased the frequency but not the amplitude of mEPSC. Further, we tested the effect of IL-10 on mEPSC in a model of homeostatic synaptic plasticity (HSP) induced by treatment of primary hippocampal culture with 1 µM of tetrodotoxin (TTX) for a 24 h. It was found that 15 min application of IL-10 at established HSP resulted in enhanced mEPSC frequency, thus partially compensating for a decrease in the mEPSC frequency associated with TTX-induced HSP. Next, we studied if IL-10 can influence induction of HSP. We found that co-incubation of IL-10 with 1 µM of TTX for 24 h induced synaptic scaling, significantly increasing the amplitude of mEPSC and Ca2+ responses to application of the AMPA agonist, 5-Fluorowillardiine, thus facilitating a compensatory postsynaptic mechanism at HSP condition. Our results indicate that IL-10 potentiates synaptic activity in a dose- and time-dependent manner exerting both presynaptic (short-term exposure) and postsynaptic (long-term exposure) action. Obtained results demonstrate involvement of IL-10 in the regulation of basal glutamatergic synaptic transmission and plasticity at normal conditions.
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The role of anti-inflammatory cytokines in memory processing in a healthy brain. Behav Brain Res 2019; 367:111-116. [PMID: 30943419 DOI: 10.1016/j.bbr.2019.03.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 03/29/2019] [Accepted: 03/30/2019] [Indexed: 11/21/2022]
Abstract
The purpose of the work was to study the role of anti-inflammatory cytokines in memory processing in a healthy brain. Wistar rats were trained to perform a task with positive (food) reinforcement; and then the task performance was tested after intraventricular injection of IL-10 or TGF-β1. A microinjection into the brain of either of the two cytokines did not affect the performance of the task and did not have an anti-amnesic effect when the retrieval was deteriorated with scopolamine. In addition, endogenous levels of IL-10 and TGF-β1 were determine in the prefrontal cortex and in the hippocampus after one and two training sessions, consisting of 10 runs each. The level of IL-10 did not change after training both in the prefrontal cortex and in the hippocampus. Endogenous level of TGF-β1 increased in the neocortex after the first training session, the second session, and recovered to the normal level three days after training. In contrast, in the hippocampus, the level of TGF-β1 was decreased: maximally after the first training session in the right hippocampus and after the second training session in the left one. Given the role of the prefrontal cortex in memory processing, we assume that a specific increase of TGF-β1 in the prefrontal cortex may indicate involvement in memory trace consolidation.
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Ondacova K, Moravcikova L, Jurkovicova D, Lacinova L. Fibrotic scar model and TGF-β1 differently modulate action potential firing and voltage-dependent ion currents in hippocampal neurons in primary culture. Eur J Neurosci 2017; 46:2161-2176. [DOI: 10.1111/ejn.13663] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 07/17/2017] [Accepted: 07/21/2017] [Indexed: 12/17/2022]
Affiliation(s)
- Katarina Ondacova
- Center of Biosciences; Institute of Molecular Physiology and Genetics; Slovak Academy of Sciences; Dubravska cesta 9 Bratislava 84005 Slovakia
| | - Lucia Moravcikova
- Center of Biosciences; Institute of Molecular Physiology and Genetics; Slovak Academy of Sciences; Dubravska cesta 9 Bratislava 84005 Slovakia
| | - Dana Jurkovicova
- KRD Molecular Technologies s. r. o.; Bratislava Slovakia
- Biomedical Research Center; Cancer Research Institute; Slovak Academy of Sciences; Bratislava Slovakia
| | - Lubica Lacinova
- Center of Biosciences; Institute of Molecular Physiology and Genetics; Slovak Academy of Sciences; Dubravska cesta 9 Bratislava 84005 Slovakia
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Levin SG, Godukhin OV. Modulating Effect of Cytokines on Mechanisms of Synaptic Plasticity in the Brain. BIOCHEMISTRY (MOSCOW) 2017; 82:264-274. [PMID: 28320267 DOI: 10.1134/s000629791703004x] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
After accumulation of data showing that resident brain cells (neurons, astrocytes, and microglia) produce mediators of the immune system, such as cytokines and their receptors under normal physiological conditions, a critical need emerged for investigating the role of these mediators in cognitive processes. The major problem for understanding the functional role of cytokines in the mechanisms of synaptic plasticity, de novo neurogenesis, and learning and memory is the small number of investigated cytokines. Existing concepts are based on data from just three proinflammatory cytokines: interleukin-1 beta, interleukin-6, and tumor necrosis factor-alpha. The amount of information in the literature on the functional role of antiinflammatory cytokines in the mechanisms of synaptic plasticity and cognitive functions of mature mammalian brain is dismally low. However, they are of principle importance for understanding the mechanisms of local information processing in the brain, since they modulate the activity of individual cells and local neural networks, being able to reconstruct the processes of synaptic plasticity and intercellular communication, in general, depending on the local ratio of the levels of different cytokines in certain areas of the brain. Understanding the functional role of cytokines in cellular mechanisms of information processing and storage in the brain would allow developing preventive and therapeutic means for the treatment of neuropathologies related to impairment of these mechanisms.
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Affiliation(s)
- S G Levin
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia.
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12
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Dong TF, Lv HX, Niu XL, Gui YK, Zhang P, Yan HQ, Li T. Effect of Urinary Kallidinogenase on Transforming Growth Factor-β1 and High-Sensitivity C-Reactive Protein Expression in Rat Focal Cerebral Ischemic Injury. Med Sci Monit 2016; 22:2852-8. [PMID: 27521289 PMCID: PMC4988362 DOI: 10.12659/msm.892724] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Background In this study we investigated the effect of urinary kallidinogenase (UK) on transforming growth factor beta 1 (TGF-β1) expression in brain tissue. We also explored the neuroprotective mechanism of UK against ischemic injury by measuring serum high-sensitivity C-reactive protein (hs-CRP) level changes after rat cerebral ischemic injury. Material/Methods The rat middle cerebral artery ischemia/reperfusion model was established using the suture method. Sprague-Dawley rats were randomly divided into 3 groups: treatment, Gegen control, and blank control. Each group was subsequently divided into 5 subgroups according to time (6, 12, 24, 48, and 72 h). Rats in the treatment group were administered UK as treatment. TGF-β1 expression was observed at each time point using SABC and immunohistochemical staining methods to estimate cerebral infarct volume percentage. Serum hs-CRP levels were also measured. Results TGF-β1 protein expression in ischemic brain tissues of the treatment group significantly increased at each time point (P<0.01) compared with both control groups. Treatment group serum hs-CRP levels significantly decreased at each time point (P<0.05) compared with both control groups. Conclusions UK exerts a neuroprotective effect by upregulating TGF-β1 expression and inhibiting excessive inflammatory responses.
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Affiliation(s)
- Ting-Fang Dong
- Department of Pharmacy, The First Afiliated Hospital of Xinxiang Medical College, Weihui, Henan, China (mainland)
| | - Hai-Xia Lv
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan, China (mainland)
| | - Xiao-Lu Niu
- Department of Neurology, The First Afiliated Hospital of Xinxiang Medical College, Weihui, Henan, China (mainland)
| | - Yong-Kun Gui
- Department of Neurology, The First Afiliated Hospital of Xinxiang Medical College, Weihui, Henan, China (mainland)
| | - Ping Zhang
- Department of Neurology, The First Afiliated Hospital of Xinxiang Medical College, Weihui, Henan, China (mainland)
| | - Hai-Qing Yan
- Department of Neurology, The First Afiliated Hospital of Xinxiang Medical College, Weihui, Henan, China (mainland)
| | - Tong Li
- Department of Neurology, The First Afiliated Hospital of Xinxiang Medical College, Weihui, Henan, China (mainland)
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Role of BKCa Potassium Channels in the Mechanisms of Modulatory Effects of IL-10 on Hypoxia-Induced Changes in Activity of Hippocampal Neurons. Bull Exp Biol Med 2016; 160:643-5. [DOI: 10.1007/s10517-016-3238-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Indexed: 10/22/2022]
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14
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Liu JH, Feng D, Zhang YF, Shang Y, Wu Y, Li XF, Pei L. Chloral Hydrate Preconditioning Protects Against Ischemic Stroke via Upregulating Annexin A1. CNS Neurosci Ther 2015. [PMID: 26205642 DOI: 10.1111/cns.12435] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
AIMS Preconditioning is promising for treating cerebral ischemic stroke. Annexin A1 (ANXA1) is a homeostatic antiinflammatory mediator that participates in countering against ischemic injuries. We investigated whether chloral hydrate preconditioning (CH) exerts neuroprotection via regulation of ANXA1 in stroke. METHODS Adult male C57BL/6J mice or ANXA1 knockout (ANXA1(-/-) ) mice were randomly allocated to control (NCH) and CH groups [2%, 6%, and 10% chloral hydrate (i.p.) 1 h before the middle cerebral artery occlusion (MCAO)]. Neurological performances were evaluated by modified 7-point neurological scales and rotarod test. Cerebral infarction was analyzed by triphenyltetrazolium chloride (TTC) staining and MRI. The expression of ANXA1, pro-inflammatory (TNF-α, IL-1β, IL-6), and antiinflammatory (IL-4, IL-10, TGF-β) cytokines was investigated by RT-PCR, western blot, and immunofluorescence. RESULTS Chloral hydrate preconditioning significantly improved the neurological outcomes and reduced the infarction and brain edema after ischemia. In addition, CH increased the expression of ANXA1 in the microglia, decreased the levels of TNF-α, IL-1β, and IL-6, while elevated the levels of IL-4, IL-10, and TGF-β in the MCAO mice. Furthermore, both ANXA1 blocker Boc1 (5 mg/kg, i.c.v.) or ANXA1 gene deficiency restrained the protective effects of CH against stroke. CONCLUSIONS Chloral hydrate preconditioning protects against ischemic injuries through upregulating the expression of ANXA1, and the followed antiinflammatory mechanisms.
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Affiliation(s)
- Jiu-Hong Liu
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dan Feng
- Department of Pain Clinic, Institute of Anesthesia and Critical Care, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu-Fen Zhang
- Department of Neurobiology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - You Shang
- Department of Pain Clinic, Institute of Anesthesia and Critical Care, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yan Wu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiao-Feng Li
- Department of Neurology, The People's Hospital of Guangxi Zhuang-Autonomous Region, Guilin, China
| | - Lei Pei
- Department of Neurobiology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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15
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Tukhovskaya EA, Turovsky EA, Turovskaya MV, Levin SG, Murashev AN, Zinchenko VP, Godukhin OV. Anti-inflammatory cytokine interleukin-10 increases resistance to brain ischemia through modulation of ischemia-induced intracellular Ca²⁺ response. Neurosci Lett 2014; 571:55-60. [PMID: 24796809 DOI: 10.1016/j.neulet.2014.04.046] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Revised: 04/17/2014] [Accepted: 04/25/2014] [Indexed: 10/25/2022]
Abstract
It is suggested that anti-inflammatory cytokine interleukin-10 (IL-10) mediates the delayed protective effects through activation of Jak-Stat3, PI3K-Akt and NF-κB signaling pathways. However, our previous experiments have demonstrated that IL-10 is capable to exert the rapid neuroprotective action through modulation of hypoxia-induced intracellular Ca(2+) ([Ca(2+)]i) response. The first purpose of the present study was to evaluate the neuroprotective effects of IL-10 using three models of the ischemic insults in rats: permanent middle cerebral artery occlusion, ischemia in acute hippocampal slices in vitro and ischemia in cultured hippocampal cells in vitro. The second purpose of the study was to elucidate a role of [Ca(2+)]i changes in the mechanisms underlying IL-10 elicited protection of neurons and astrocytes from ischemia-induced death in cultures of primary hippocampal cells. The data presented here shown that anti-inflammatory cytokine IL-10 is capable to induce a resistance of the brain cells to ischemia-evoked damages in in vivo and in vitro models of the ischemic insults in rats. This protective effect in cultured hippocampal cells is developed rapidly after application of IL-10 and strongly associated with the IL-10 elicited elimination of [Ca(2+)]i response to ischemia. Thus, our results provide the evidence that anti-inflammatory cytokine IL-10, in addition to an activation of the canonical signaling pathways, is capable to exert the rapid neuroprotective effects through transcription-independent modulation of ischemia-induced intracellular Ca(2+) responses in the brain cells.
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Affiliation(s)
- Elena A Tukhovskaya
- Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, Pushchino, Russia
| | - Egor A Turovsky
- Institute of Cell Biophysics of Russian Academy of Sciences, Pushchino, Russia
| | - Maria V Turovskaya
- Institute of Cell Biophysics of Russian Academy of Sciences, Pushchino, Russia
| | - Sergei G Levin
- Institute of Theoretical and Experimental Biophysics of Russian Academy of Sciences, Pushchino, Russia
| | - Arkady N Murashev
- Branch of Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry of Russian Academy of Sciences, Pushchino, Russia
| | - Valery P Zinchenko
- Institute of Cell Biophysics of Russian Academy of Sciences, Pushchino, Russia
| | - Oleg V Godukhin
- Institute of Theoretical and Experimental Biophysics of Russian Academy of Sciences, Pushchino, Russia.
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Activation of the Kynurenine Pathway in the Acute Phase of Stroke and its Role in Fatigue and Depression Following Stroke. J Mol Neurosci 2014; 54:181-7. [DOI: 10.1007/s12031-014-0272-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Accepted: 02/24/2014] [Indexed: 12/21/2022]
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17
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Turovskaya MV, Turovsky EA, Kononov AV, Zinchenko VP. Short-term hypoxia induces a selective death of GABAergic neurons. BIOCHEMISTRY MOSCOW SUPPLEMENT SERIES A-MEMBRANE AND CELL BIOLOGY 2014. [DOI: 10.1134/s199074781305019x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Yu CY, Gui W, He HY, Wang XS, Zuo J, Huang L, Zhou N, Wang K, Wang Y. Neuronal and astroglial TGFβ-Smad3 signaling pathways differentially regulate dendrite growth and synaptogenesis. Neuromolecular Med 2014; 16:457-72. [PMID: 24519742 DOI: 10.1007/s12017-014-8293-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Accepted: 01/27/2014] [Indexed: 12/16/2022]
Abstract
To address the role of the transforming growth factor beta (TGFβ)-Smad3 signaling pathway in dendrite growth and associated synaptogenesis, we used small inhibitory RNA to knockdown the Smad3 gene in either cultured neurons and or primary astrocytes. We found that TGFβ1 treatment of primary neurons increased dendrite extensions and the number of synapsin-1-positive synapses. When Smad3 was knockdown in primary neurons, dendrite growth was inhibited and the number of synapsin-1-positive synapses reduced even with TGFβ1 treatment. When astrocyte-conditioned medium (ACM), collected from TGFβ1-treated astrocytes (TGFβ1-stimulated ACM), was added to cultured neurons, dendritic growth was inhibited and the number of synapsin-1-positive puncta reduced. When TGFβ1-stimulated ACM was collected from astrocytes with Smad3 knocked down, this conditioned media promoted the growth of dendrites and the number of synapsin-1-positive puncta in cultured neurons. We further found that TGFβ1 signaling through Smad3 increased the expression of chondroitin sulfate proteoglycans, neurocan, and phosphacan in ACM. Application of chondroitinase ABC to the TGFβ1-stimulated ACM reversed its inhibitory effects on the dendrite growth and the number of synapsin-1-positive puncta. On the other hand, we found that TGFβ1 treatment caused a facilitation of Smad3 phosphorylation and translocation to the nucleus induced by status epilepticus (SE) in wild-type (Smad3(+/+)) mice, and this treatment also caused a promotion of γ-aminobutyric acid-ergic synaptogenesis impaired by SE in Smad3(+/+) as well as in Smad3(-/-) mice, but more dramatic promotion in Smad3(+/+) mice. Thus, we provide evidence for the first time that TGFβ-Smad3 signaling pathways within neuron and astrocyte differentially regulate dendrite growth and synaptogenesis, and this pathway may be involved in the pathogenesis of some central nervous system diseases, such as epilepsy.
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Affiliation(s)
- Chuan-Yong Yu
- Epilepsy and Headache Group, Department of Neurology, The First Hospital of Anhui Medical University, Jixi Road 218, Hefei, 230022, China
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19
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Brödemann R, Peters B, Höllt V, Becker A. Dynamic aspects of cerebral hypoxic preconditioning measured in an in vitro model. Neurosci Lett 2014; 558:175-9. [PMID: 24240010 DOI: 10.1016/j.neulet.2013.10.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 10/17/2013] [Accepted: 10/29/2013] [Indexed: 11/25/2022]
Abstract
Preconditioning increases the neurons' resistance to subsequent hypoxia. An in vitro study was conducted to explore kinetic aspects of hypoxic preconditioning. Hippocampal slices were exposed to one single or repeated episodes of oxygen and glucose deprivation (OGD). The interval between OGD episodes varied between 30 min and 180 min. OGD led to a significant reduction in the population spike amplitude. Subsequent episodes of OGD did not result in a further reduction in the population spike amplitude if the interval between the episodes was ca. 60 min, which demonstrated that there were preconditioning effects. In the experiment using an interval of 30 min, population spike amplitude decreased after each OGD episode. The set-up described is useful for detecting damaging effects of OGD as well as preconditioning effects. A time window of ca. 60 min is required to induce protective mechanisms.
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Affiliation(s)
- Rudolf Brödemann
- Otto-von-Guericke University, Faculty of Medicine, Institute of Pharmacology and Toxicology, Leipziger Str. 44, D-39120 Magdeburg, Germany
| | - Brigitte Peters
- Otto-von-Guericke University, Faculty of Medicine, Department of Biometry and Informatics, Leipziger Str. 44, D-39120 Magdeburg, Germany
| | - Volker Höllt
- Otto-von-Guericke University, Faculty of Medicine, Institute of Pharmacology and Toxicology, Leipziger Str. 44, D-39120 Magdeburg, Germany
| | - Axel Becker
- Otto-von-Guericke University, Faculty of Medicine, Institute of Pharmacology and Toxicology, Leipziger Str. 44, D-39120 Magdeburg, Germany.
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Pretreatment with apoaequorin protects hippocampal CA1 neurons from oxygen-glucose deprivation. PLoS One 2013; 8:e79002. [PMID: 24244400 PMCID: PMC3823939 DOI: 10.1371/journal.pone.0079002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 09/26/2013] [Indexed: 12/26/2022] Open
Abstract
Ischemic stroke affects ∼795,000 people each year in the U.S., which results in an estimated annual cost of $73.7 billion. Calcium is pivotal in a variety of neuronal signaling cascades, however, during ischemia, excess calcium influx can trigger excitotoxic cell death. Calcium binding proteins help neurons regulate/buffer intracellular calcium levels during ischemia. Aequorin is a calcium binding protein isolated from the jellyfish Aequorea victoria, and has been used for years as a calcium indicator, but little is known about its neuroprotective properties. The present study used an in vitro rat brain slice preparation to test the hypothesis that an intra-hippocampal infusion of apoaequorin (the calcium binding component of aequorin) protects neurons from ischemic cell death. Bilaterally cannulated rats received an apoaequorin infusion in one hemisphere and vehicle control in the other. Hippocampal slices were then prepared and subjected to 5 minutes of oxygen-glucose deprivation (OGD), and cell death was assayed by trypan blue exclusion. Apoaequorin dose-dependently protected neurons from OGD--doses of 1% and 4% (but not 0.4%) significantly decreased the number of trypan blue-labeled neurons. This effect was also time dependent, lasting up to 48 hours. This time dependent effect was paralleled by changes in cytokine and chemokine expression, indicating that apoaequorin may protect neurons via a neuroimmunomodulatory mechanism. These data support the hypothesis that pretreatment with apoaequorin protects neurons against ischemic cell death, and may be an effective neurotherapeutic.
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Ormstad H, Verkerk R, Aass HCD, Amthor KF, Sandvik L. Inflammation-induced catabolism of tryptophan and tyrosine in acute ischemic stroke. J Mol Neurosci 2013; 51:893-902. [PMID: 23990339 DOI: 10.1007/s12031-013-0097-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Accepted: 08/12/2013] [Indexed: 01/04/2023]
Abstract
Whether the inflammatory response that accompanies acute ischemic stroke induces the kynurenine pathway is currently a matter of conjecture. Activation of this pathway may disturb active metabolites. The aim of this study was thus to characterize the catabolism of tryptophan and tyrosine in acute ischemic stroke (AIS) patients, and its association with cytokines, C-reactive protein, and glucose. Serum levels of 5-hydroxytryptamine, tryptophan catabolites, and competing amino acids and significant ratios of these were measured in 45 AIS patients and compared to those of 40 control subjects. Furthermore, associations between the serum levels of these biomarkers and serum levels of cytokines, C-reactive protein, and glucose were determined. Significantly lower levels of tryptophan and tyrosine in the stroke group indicate increased tryptophan and tyrosine oxidation in acute ischemic stroke, while significantly lowered tryptophan index and tyrosine index indicate a reduced capacity for the synthesis of 5-hydroxytryptamine and catecholamines in the brain, respectively. Furthermore, our findings indicate that the proinflammatory response in acute ischemic stroke may be responsible for a reduced capacity for the biosynthesis of brain catecholamines and mediate neurotoxic effects. Meanwhile, the anti-inflammatory IL-10 may exert a neuroprotective effect and prevent the putative reduced capacity for 5-hydroxytryptamine synthesis in the brain. These mechanisms may be involved in several sequelae following stroke, such as cognitive impairment, depression, and fatigue.
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Affiliation(s)
- Heidi Ormstad
- Department of Health Sciences, Buskerud University College, Drammen, Norway,
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Kneeland RE, Fatemi SH. Viral infection, inflammation and schizophrenia. Prog Neuropsychopharmacol Biol Psychiatry 2013; 42:35-48. [PMID: 22349576 PMCID: PMC3408569 DOI: 10.1016/j.pnpbp.2012.02.001] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Revised: 01/06/2012] [Accepted: 02/02/2012] [Indexed: 12/16/2022]
Abstract
Schizophrenia is a severe neurodevelopmental disorder with genetic and environmental etiologies. Prenatal viral/bacterial infections and inflammation play major roles in the genesis of schizophrenia. In this review, we describe a viral model of schizophrenia tested in mice whereby the offspring of mice prenatally infected with influenza at E7, E9, E16, and E18 show significant gene, protein, and brain structural abnormalities postnatally. Similarly, we describe data on rodents exposed to bacterial infection or injected with a synthetic viral mimic (PolyI:C) also demonstrating brain structural and behavioral abnormalities. Moreover, human serologic data has been indispensible in supporting the viral theory of schizophrenia. Individuals born seropositive for bacterial and viral agents are at a significantly elevated risk of developing schizophrenia. While the specific mechanisms of prenatal viral/bacterial infections and brain disorder are unclear, recent findings suggest that the maternal inflammatory response may be associated with fetal brain injury. Preventive and therapeutic treatment options are also proposed. This review presents data related to epidemiology, human serology, and experimental animal models which support the viral model of schizophrenia.
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Affiliation(s)
- Rachel E. Kneeland
- Department of Psychiatry, Division of Neuroscience Research, University of Minnesota Medical School, 420 Delaware St. SE, MMC 392, Minneapolis, MN 55455, United States
| | - S. Hossein Fatemi
- Department of Psychiatry, Division of Neuroscience Research, University of Minnesota Medical School, 420 Delaware St. SE, MMC 392, Minneapolis, MN 55455, United States,Department of Pharmacology, University of Minnesota Medical School, 310 Church St. SE, Minneapolis, MN 55455, United States and Department of Neuroscience, University of Minnesota Medical School, 310 Church St. SE, Minneapolis, MN 55455, United States,Corresponding author at: 420 Delaware Street SE, MMC 392, Minneapolis, MN 55455. Tel.: +1 612 626 3633; fax: +1 612 624 8935. (R.E. Kneeland), (S.H. Fatemi)
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Savina TA, Shchipakina TG, Levin SG, Godukhin OV. Interleukin-10 prevents the hypoxia-induced decreases in expressions of AMPA receptor subunit GluA1 and alpha subunit of Ca2+/calmodulin-dependent protein kinase II in hippocampal neurons. Neurosci Lett 2013. [DOI: 10.1016/j.neulet.2012.11.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Turovskaya MV, Turovsky EA, Zinchenko VP, Levin SG, Godukhin OV. Interleukin-10 modulates [Ca2+]i response induced by repeated NMDA receptor activation with brief hypoxia through inhibition of InsP3-sensitive internal stores in hippocampal neurons. Neurosci Lett 2012; 516:151-5. [DOI: 10.1016/j.neulet.2012.03.084] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Revised: 03/25/2012] [Accepted: 03/27/2012] [Indexed: 10/28/2022]
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