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Soares AR, Picciotto MR. Nicotinic regulation of microglia: potential contributions to addiction. J Neural Transm (Vienna) 2024; 131:425-435. [PMID: 37778006 PMCID: PMC11189589 DOI: 10.1007/s00702-023-02703-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 09/22/2023] [Indexed: 10/03/2023]
Abstract
Clinical and preclinical studies have identified immunosuppressive effects of nicotine, with potential implications for treating nicotine addiction. Here we review how nicotine can regulate microglia, the resident macrophages in the brain, and corresponding effects of nicotine on neuroimmune signaling. There is significant evidence that activation of α7 nicotinic acetylcholine receptors (nAChRs) on microglia can trigger an anti-inflammatory cascade that alters microglial polarization and activity, cytokine release, and intracellular calcium concentrations, leading to neuroprotection. These anti-inflammatory effects of nicotine-dependent α7 nAChR signaling are lost during withdrawal, suggesting that neuroimmune signaling is potentiated during abstinence, and thus, heightened microglial activity may drive circuit disruption that contributes to withdrawal symptoms and hyperkatifeia. In sum, the clinical literature has highlighted immunomodulatory effects of nicotine and the potential for anti-inflammatory compounds to treat addiction. The preclinical literature investigating the underlying mechanisms points to a role of microglial engagement in the circuit dysregulation and behavioral changes that occur during nicotine addiction and withdrawal, driven, at least in part, by activation of α7 nAChRs on microglia. Specifically targeting microglial signaling may help alleviate withdrawal symptoms in people with nicotine dependence and help to promote abstinence.
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Affiliation(s)
- Alexa R Soares
- Department of Psychiatry, Yale University, 34 Park Street-3rd floor Research, New Haven, CT, 06508, USA
- Interdepartmental Neuroscience Program, Yale University School of Medicine, New Haven, CT, 06508, USA
| | - Marina R Picciotto
- Department of Psychiatry, Yale University, 34 Park Street-3rd floor Research, New Haven, CT, 06508, USA.
- Interdepartmental Neuroscience Program, Yale University School of Medicine, New Haven, CT, 06508, USA.
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Saquib M, Agnihotri P, Sarkar A, Malik S, Mann S, Chakraborty D, Joshi L, Malhotra R, Biswas S. Functional Significance of miR-4693-5p in Targeting HIF1α and Its Link to Rheumatoid Arthritis Pathogenesis. Noncoding RNA 2024; 10:22. [PMID: 38668380 PMCID: PMC11053697 DOI: 10.3390/ncrna10020022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 03/26/2024] [Accepted: 03/29/2024] [Indexed: 04/29/2024] Open
Abstract
Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disease that causes joint inflammation and destruction with an unknown origin. Our study aims to elucidate the molecular mechanism behind HIF1α overexpression in RA. Dysregulated miRNA expressions are known to influence gene behavior, thereby enhancing cell proliferation, inflammation, and resistance to apoptosis, contributing to RA development. Our earlier finding indicated that exogenous miRNA similar to miR-4693-5p may modulate RA-related targets. However, the specific role of miR-4693-5p and its targets in RA remain unexplored. In this study, we found that miR-4693-5p was significantly reduced in PBMCs of RA patients, with evidence suggesting it targets the 3' UTR of HIF1α, thereby potentially contributing to its overexpression in RA. In vitro overexpression of miR-4693-5p leads to the knockdown of HIF1α, resulting in inhibited expression of Survivin to disrupt apoptosis resistance, inflammation suppression, and a reduction in the total cellular ROS response in SW982 and RAFLS cells. The results were validated using the CIA Rat model. In conclusion, this study provides a crucial foundation for understanding the functional role of miR-4693-5p. These findings improve our understanding and provide novel insights into the molecular mechanisms underlying RA pathogenesis.
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Affiliation(s)
- Mohd Saquib
- Council of Scientific and Industrial Research (CSIR), Institute of Genomics and Integrative Biology, Delhi University Campus, Mall Road, Delhi 110007, India; (M.S.); (P.A.); (A.S.); (S.M.); (S.M.); (D.C.); (L.J.)
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Prachi Agnihotri
- Council of Scientific and Industrial Research (CSIR), Institute of Genomics and Integrative Biology, Delhi University Campus, Mall Road, Delhi 110007, India; (M.S.); (P.A.); (A.S.); (S.M.); (S.M.); (D.C.); (L.J.)
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ashish Sarkar
- Council of Scientific and Industrial Research (CSIR), Institute of Genomics and Integrative Biology, Delhi University Campus, Mall Road, Delhi 110007, India; (M.S.); (P.A.); (A.S.); (S.M.); (S.M.); (D.C.); (L.J.)
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Swati Malik
- Council of Scientific and Industrial Research (CSIR), Institute of Genomics and Integrative Biology, Delhi University Campus, Mall Road, Delhi 110007, India; (M.S.); (P.A.); (A.S.); (S.M.); (S.M.); (D.C.); (L.J.)
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sonia Mann
- Council of Scientific and Industrial Research (CSIR), Institute of Genomics and Integrative Biology, Delhi University Campus, Mall Road, Delhi 110007, India; (M.S.); (P.A.); (A.S.); (S.M.); (S.M.); (D.C.); (L.J.)
| | - Debolina Chakraborty
- Council of Scientific and Industrial Research (CSIR), Institute of Genomics and Integrative Biology, Delhi University Campus, Mall Road, Delhi 110007, India; (M.S.); (P.A.); (A.S.); (S.M.); (S.M.); (D.C.); (L.J.)
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Lovely Joshi
- Council of Scientific and Industrial Research (CSIR), Institute of Genomics and Integrative Biology, Delhi University Campus, Mall Road, Delhi 110007, India; (M.S.); (P.A.); (A.S.); (S.M.); (S.M.); (D.C.); (L.J.)
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rajesh Malhotra
- All India Institute of Medical Science (AIIMS), Ansari Nagar, New Delhi 110029, India;
| | - Sagarika Biswas
- Council of Scientific and Industrial Research (CSIR), Institute of Genomics and Integrative Biology, Delhi University Campus, Mall Road, Delhi 110007, India; (M.S.); (P.A.); (A.S.); (S.M.); (S.M.); (D.C.); (L.J.)
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Milani F, Bottoni M, Bardelli L, Colombo L, Colombo PS, Bruschi P, Giuliani C, Fico G. Remnants from the Past: From an 18th Century Manuscript to 21st Century Ethnobotany in Valle Imagna (Bergamo, Italy). PLANTS (BASEL, SWITZERLAND) 2023; 12:2748. [PMID: 37514363 PMCID: PMC10386062 DOI: 10.3390/plants12142748] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/20/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023]
Abstract
BACKGROUND This project originated from the study of an 18th century manuscript found in Valle Imagna (Bergamo, Italy) which contains 200 plant-based medicinal remedies. A first comparison with published books concerning 20th century folk medicine in the Valley led to the designing of an ethnobotanical investigation, aimed at making a thorough comparison between past and current phytotherapy knowledge in this territory. METHODS The field investigation was conducted through semi-structured interviews. All data collected was entered in a database and subsequently processed. A diachronic comparison between the field results, the manuscript, and a 20th century book was then performed. RESULTS A total of 109 interviews were conducted and the use of 103 medicinal plants, belonging to 46 families, was noted. A decrease in number of plant taxa and uses was observed over time, with only 42 taxa and 34 uses reported in the manuscript being currently known by the people of the valley. A thorough comparison with the remedies in the manuscript highlighted similar recipes for 12 species. Specifically, the use of agrimony in Valle Imagna for the treatment of deep wounds calls back to an ancient remedy against leg ulcers based on this species. CONCLUSIONS The preliminary results of this study allow us to outline the partial passage through time fragments of ancient plant-based remedies once used in the investigated area.
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Affiliation(s)
- Fabrizia Milani
- Department of Pharmaceutical Sciences, University of Milan, Via Mangiagalli 25, 20133 Milan, Italy
- Ghirardi Botanic Garden, Department of Pharmaceutical Sciences, University of Milan, Via Religione 25, 25088 Toscolano Maderno, Italy
| | - Martina Bottoni
- Department of Pharmaceutical Sciences, University of Milan, Via Mangiagalli 25, 20133 Milan, Italy
- Ghirardi Botanic Garden, Department of Pharmaceutical Sciences, University of Milan, Via Religione 25, 25088 Toscolano Maderno, Italy
| | - Laura Bardelli
- Department of Pharmaceutical Sciences, University of Milan, Via Mangiagalli 25, 20133 Milan, Italy
- Ghirardi Botanic Garden, Department of Pharmaceutical Sciences, University of Milan, Via Religione 25, 25088 Toscolano Maderno, Italy
| | - Lorenzo Colombo
- Department of Pharmaceutical Sciences, University of Milan, Via Mangiagalli 25, 20133 Milan, Italy
- Ghirardi Botanic Garden, Department of Pharmaceutical Sciences, University of Milan, Via Religione 25, 25088 Toscolano Maderno, Italy
| | - Paola Sira Colombo
- Department of Pharmaceutical Sciences, University of Milan, Via Mangiagalli 25, 20133 Milan, Italy
- Ghirardi Botanic Garden, Department of Pharmaceutical Sciences, University of Milan, Via Religione 25, 25088 Toscolano Maderno, Italy
| | - Piero Bruschi
- Department of Agricultural, Environmental, Food and Forestry Science and Technology, University of Florence, 50144 Florence, Italy
| | - Claudia Giuliani
- Department of Pharmaceutical Sciences, University of Milan, Via Mangiagalli 25, 20133 Milan, Italy
- Ghirardi Botanic Garden, Department of Pharmaceutical Sciences, University of Milan, Via Religione 25, 25088 Toscolano Maderno, Italy
| | - Gelsomina Fico
- Department of Pharmaceutical Sciences, University of Milan, Via Mangiagalli 25, 20133 Milan, Italy
- Ghirardi Botanic Garden, Department of Pharmaceutical Sciences, University of Milan, Via Religione 25, 25088 Toscolano Maderno, Italy
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Song Y, Xing X, Shen J, Chen G, Zhao L, Tian L, Ying J, Yu Y. Anti-inflammatory effect of glycyrrhetinic acid in IL-1β-induced SW982 cells and adjuvant-induced arthritis. Heliyon 2023; 9:e15588. [PMID: 37180904 PMCID: PMC10172753 DOI: 10.1016/j.heliyon.2023.e15588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 04/09/2023] [Accepted: 04/14/2023] [Indexed: 05/16/2023] Open
Abstract
Influences of Glycyrrhetinic acid on expression of inflammatory factors in interleukin (IL)-1β-induced SW982 cells and its anti-inflammatory effects were discussed in this study. MTT results showed that Glycyrrhetinic acid (≤80 μmol·L-1) almost has no toxicity on SW982 cells. The results of ELISA and real-time PCR showed that Glycyrrhetinic acid (10, 20 and 40 μmol · L-1) can significantly inhibit the expression of inflammatory factors such as IL-6, IL-8 and matrix metalloproteinase-1 (MMP-1). Western blot analysis showed that Glycyrrhetinic acid remarkably blocked the NF-κB signaling pathway in vitro. Molecule docking showed that Glycyrrhetinic acid could bind to the active site (NLS Polypeptide) of NF-κB p65. Furthermore, observation of rat foot swelling proved that Glycyrrhetinic acid had a significant therapeutic effect on adjuvant-induced arthritis (AIA) in rats in vivo. Collectively, all these findings suggested that Glycyrrhetinic acid might be a promising lead compound worthy of further pursuit as anti-inflammation agent.
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Affiliation(s)
- Yang Song
- Department of Pain, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei 230022, China
| | - Xinyu Xing
- Department of Pain, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - Jing Shen
- Department of Pain, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - Guo Chen
- Department of Gynecology, Maternity and Child Health Hospital Affiliated to Anhui Medical University, Anhui Province Maternity and Child Health Hospital, No. 15 Yimin Street, Hefei 230001, Anhui, China
| | - Li Zhao
- Department of Pain, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - Lu Tian
- Department of Gynecology, Maternity and Child Health Hospital Affiliated to Anhui Medical University, Anhui Province Maternity and Child Health Hospital, No. 15 Yimin Street, Hefei 230001, Anhui, China
| | - Jie Ying
- Department of Gynecology, Maternity and Child Health Hospital Affiliated to Anhui Medical University, Anhui Province Maternity and Child Health Hospital, No. 15 Yimin Street, Hefei 230001, Anhui, China
| | - Yongqiang Yu
- Department of Radiology, The First Affiliated Hospital of Anhui Medical University, No. 218 Jixi Road, Hefei 230032, Anhui, China
- Corresponding author.
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