Anti-inflammatory effects induced by pharmaceutical substances on inflammatory active brain astrocytes—promising treatment of neuroinflammation
Abstract Background Pharmaceutical treatment with probable anti-inflammatory substances that attack cells in various ways including receptors, ion channels, or transporter systems may slow down the progression of inflammatory conditions. Astrocytes and microglia are the most prominent target cells f...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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BMC
2018-11-01
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| Series: | Journal of Neuroinflammation |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s12974-018-1361-8 |
| _version_ | 1819017574052003840 |
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| author | Elisabeth Hansson Ulrika Björklund Eva Skiöldebrand Lars Rönnbäck |
| author_facet | Elisabeth Hansson Ulrika Björklund Eva Skiöldebrand Lars Rönnbäck |
| author_sort | Elisabeth Hansson |
| collection | DOAJ |
| description | Abstract Background Pharmaceutical treatment with probable anti-inflammatory substances that attack cells in various ways including receptors, ion channels, or transporter systems may slow down the progression of inflammatory conditions. Astrocytes and microglia are the most prominent target cells for inflammation in the central nervous system. Their responses upon inflammatory stimuli work through the NO/cyclic GMP/protein kinase G systems that can downregulate the ATP-induced Ca2+ signaling, as well as G protein activities which alter Na+ transporters including Na+/K+-ATPase pump activity, Toll-like receptor 4 (TLR4), glutamate-induced Ca2+ signaling, and release of pro-inflammatory cytokines. The rationale for this project was to investigate a combination of pharmaceutical substances influencing the NO and the Gi/Gs activations of inflammatory reactive cells in order to make the cells return into a more physiological state. The ATP-evoked Ca2+ signaling is important maybe due to increased ATP release and subsequent activation of purinergic receptors. A balance between intercellular Ca2+ signaling through gap junctions and extracellular signaling mediated by extracellular ATP may be important for physiological function. Methods Astrocytes in primary cultures were incubated with lipopolysaccharide in a physiological glucose concentration for 24 h to induce inflammatory reactivity. The probable anti-inflammatory substances sildenafil and 1α,25-Dihydroxyvitamin D3 together with endomorphin-1, naloxone, and levetiracetam, were used in the presence of high glucose concentration in the medium to restore the cells. Glutamate-, 5-HT-, and ATP-evoked intracellular Ca2+ release, Na+/K+-ATPase expression, expression of inflammatory receptors, and release of tumor necrosis factor alpha were measured. Results Sildenafil in ultralow concentration together with 1α,25-Dihydroxyvitamin D3 showed most prominent effects on the ATP-evoked intracellular Ca2+ release. The μ-opioid agonist endomorphin-1, the μ-opioid antagonist naloxone in ultralow concentration, and the antiepileptic agent levetiracetam downregulated the glutamate-evoked intracellular Ca2+ release and TLR4. The combination of the pharmaceutical substances in high glucose concentration downregulated the glutamate- and ATP-evoked Ca2+ signaling and the TLR4 expression and upregulated the Na+/K+-ATPase pump. Conclusion Pharmaceutical treatment with the combination of substances that have potential anti-inflammatory effects, which attack different biochemical mechanisms in the cells may exert decisive effects to downregulate neuroinflammation in the nervous system. |
| first_indexed | 2024-12-21T03:05:41Z |
| format | Article |
| id | doaj.art-1f0f4a6a6dd24ea4a03b11f6b2687a60 |
| institution | Directory Open Access Journal |
| issn | 1742-2094 |
| language | English |
| last_indexed | 2024-12-21T03:05:41Z |
| publishDate | 2018-11-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of Neuroinflammation |
| spelling | doaj.art-1f0f4a6a6dd24ea4a03b11f6b2687a602022-12-21T19:18:05ZengBMCJournal of Neuroinflammation1742-20942018-11-0115111310.1186/s12974-018-1361-8Anti-inflammatory effects induced by pharmaceutical substances on inflammatory active brain astrocytes—promising treatment of neuroinflammationElisabeth Hansson0Ulrika Björklund1Eva Skiöldebrand2Lars Rönnbäck3Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of GothenburgDepartment of Clinical Neuroscience, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of GothenburgSection of Pathology, Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural SciencesDepartment of Clinical Neuroscience, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of GothenburgAbstract Background Pharmaceutical treatment with probable anti-inflammatory substances that attack cells in various ways including receptors, ion channels, or transporter systems may slow down the progression of inflammatory conditions. Astrocytes and microglia are the most prominent target cells for inflammation in the central nervous system. Their responses upon inflammatory stimuli work through the NO/cyclic GMP/protein kinase G systems that can downregulate the ATP-induced Ca2+ signaling, as well as G protein activities which alter Na+ transporters including Na+/K+-ATPase pump activity, Toll-like receptor 4 (TLR4), glutamate-induced Ca2+ signaling, and release of pro-inflammatory cytokines. The rationale for this project was to investigate a combination of pharmaceutical substances influencing the NO and the Gi/Gs activations of inflammatory reactive cells in order to make the cells return into a more physiological state. The ATP-evoked Ca2+ signaling is important maybe due to increased ATP release and subsequent activation of purinergic receptors. A balance between intercellular Ca2+ signaling through gap junctions and extracellular signaling mediated by extracellular ATP may be important for physiological function. Methods Astrocytes in primary cultures were incubated with lipopolysaccharide in a physiological glucose concentration for 24 h to induce inflammatory reactivity. The probable anti-inflammatory substances sildenafil and 1α,25-Dihydroxyvitamin D3 together with endomorphin-1, naloxone, and levetiracetam, were used in the presence of high glucose concentration in the medium to restore the cells. Glutamate-, 5-HT-, and ATP-evoked intracellular Ca2+ release, Na+/K+-ATPase expression, expression of inflammatory receptors, and release of tumor necrosis factor alpha were measured. Results Sildenafil in ultralow concentration together with 1α,25-Dihydroxyvitamin D3 showed most prominent effects on the ATP-evoked intracellular Ca2+ release. The μ-opioid agonist endomorphin-1, the μ-opioid antagonist naloxone in ultralow concentration, and the antiepileptic agent levetiracetam downregulated the glutamate-evoked intracellular Ca2+ release and TLR4. The combination of the pharmaceutical substances in high glucose concentration downregulated the glutamate- and ATP-evoked Ca2+ signaling and the TLR4 expression and upregulated the Na+/K+-ATPase pump. Conclusion Pharmaceutical treatment with the combination of substances that have potential anti-inflammatory effects, which attack different biochemical mechanisms in the cells may exert decisive effects to downregulate neuroinflammation in the nervous system.http://link.springer.com/article/10.1186/s12974-018-1361-8Gap junction-coupled cellsAstrocytesInflammationRestorationCa2+ signalingNa+/K+-ATPase |
| spellingShingle | Elisabeth Hansson Ulrika Björklund Eva Skiöldebrand Lars Rönnbäck Anti-inflammatory effects induced by pharmaceutical substances on inflammatory active brain astrocytes—promising treatment of neuroinflammation Journal of Neuroinflammation Gap junction-coupled cells Astrocytes Inflammation Restoration Ca2+ signaling Na+/K+-ATPase |
| title | Anti-inflammatory effects induced by pharmaceutical substances on inflammatory active brain astrocytes—promising treatment of neuroinflammation |
| title_full | Anti-inflammatory effects induced by pharmaceutical substances on inflammatory active brain astrocytes—promising treatment of neuroinflammation |
| title_fullStr | Anti-inflammatory effects induced by pharmaceutical substances on inflammatory active brain astrocytes—promising treatment of neuroinflammation |
| title_full_unstemmed | Anti-inflammatory effects induced by pharmaceutical substances on inflammatory active brain astrocytes—promising treatment of neuroinflammation |
| title_short | Anti-inflammatory effects induced by pharmaceutical substances on inflammatory active brain astrocytes—promising treatment of neuroinflammation |
| title_sort | anti inflammatory effects induced by pharmaceutical substances on inflammatory active brain astrocytes promising treatment of neuroinflammation |
| topic | Gap junction-coupled cells Astrocytes Inflammation Restoration Ca2+ signaling Na+/K+-ATPase |
| url | http://link.springer.com/article/10.1186/s12974-018-1361-8 |
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