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Jia H, Gong J, Hu Z, Wen T, Li C, Chen Y, Huang J, He W. Antioxidant Carbon Dots Nanozymes Alleviate Stress-induced Depression by Modulating Gut Microbiota. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:19739-19750. [PMID: 39219094 DOI: 10.1021/acs.langmuir.4c02481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Depression is a debilitating mental illness that severely threatens millions of individuals and public health. Because of the multifactorial etiologies, there is currently no cure for depression; thus, it is urgently imperative to find alternative antidepressants and strategies. Growing evidence underscores the prominent role of oxidative stress as key pathological hallmarks of depression, making oxidative stress a potential therapeutic target. In this study, we report a N-doped carbon dot nanozyme (CDzyme) with excellent antioxidant capacity for treating depression by remodeling redox homeostasis and gut microbiota. The CDzymes prepared via microwave-assisted fast polymerization of histidine and glucose exhibit superior biocompatibility. Benefiting from the unique structure, CDzymes can provide abundant electrons, hydrogen atoms, and protons for reducing reactions, as well as catalytic sites to mimic redox enzymes. These mechanisms collaborating endow CDzymes with broad-spectrum antioxidant capacity to scavenge reactive oxygen and nitrogen species (•OH, O2-•, H2O2, ONOO-), and oxygen/nitrogen centered free radicals. A depression animal model was established by chronic unpredictable mild stress (CUMS) to evaluate the therapeutic efficacy of CDzymes from the behavioral, physiological, and biochemical index and intestinal flora assessments. CDzymes can remarkably improve depression-like behaviors and key neurotransmitters produced in hippocampus tissues and restore the gut microbiota compositions and the amino acid metabolic functions, proving the potential in treating depression through the intestinal-brain axis system. This study will facilitate the development of intestinal flora dysbiosis nanomedicines and treatment strategies for depression and other oxidative stress related multifactorial diseases.
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Affiliation(s)
- Huimin Jia
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang, Henan 461000, P. R. China
- Henan Joint International Research Laboratory of Nanomaterials for Energy and Catalysis, Xuchang University, 88 Bayi Road, Xuchang, Henan 461000, P. R. China
| | - Jiawen Gong
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang, Henan 461000, P. R. China
| | - Zheyuan Hu
- College of Food and Pharmacy, Xuchang University, Xuchang, Henan 461000, P. R. China
- Food Laboratory of Zhong Yuan, Luohe 462300, China
| | - Tao Wen
- Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing 100005, P. R. China
| | - Caixia Li
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang, Henan 461000, P. R. China
- Henan Joint International Research Laboratory of Nanomaterials for Energy and Catalysis, Xuchang University, 88 Bayi Road, Xuchang, Henan 461000, P. R. China
| | - Yuyang Chen
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang, Henan 461000, P. R. China
| | - Jihong Huang
- College of Food and Pharmacy, Xuchang University, Xuchang, Henan 461000, P. R. China
| | - Weiwei He
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University, Xuchang, Henan 461000, P. R. China
- Henan Joint International Research Laboratory of Nanomaterials for Energy and Catalysis, Xuchang University, 88 Bayi Road, Xuchang, Henan 461000, P. R. China
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Schulder T, Rudenstine S, Ettman CK, Galea S. Correlates of long-COVID-19: the role of demographics, chronic illness, and psychiatric diagnosis in an urban sample. PSYCHOL HEALTH MED 2023; 28:1831-1843. [PMID: 36752386 DOI: 10.1080/13548506.2023.2177684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 02/02/2023] [Indexed: 02/09/2023]
Abstract
Long-COVID-19 symptoms are an emerging public health issue. This study sought to investigate demographics, chronic illness, and probable psychiatric diagnoses as correlates for long-COVID-19 in an urban adult sample. Self-report Qualtrics surveys were sent to students across City University of New York (CUNY) campuses in New York City in Winter 2021-2022. Binary logistic regressions were used to assess the relation of a range of factors with endorsement of long-COVID-19. Results demonstrated that Latinx participants endorsed higher odds of long-COVID-19, as compared to non-Latinx white participants. Participants who endorsed having a prior chronic illness and those who met the cut-off for probable psychiatric diagnoses all endorsed higher odds of long-COVID-19. Long-COVID-19 may be more likely among specific subpopulations and among persons with other ongoing physical and mental illness.
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Affiliation(s)
- Talia Schulder
- Department of Psychology, City College of New York, New York, NY, USA
| | - Sasha Rudenstine
- Department of Psychology, City College of New York, New York, NY, USA
| | | | - Sandro Galea
- Department of Psychology, City College of New York, New York, NY, USA
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Godellas NE, Cymes GD, Grosman C. An experimental test of the nicotinic hypothesis of COVID-19. Proc Natl Acad Sci U S A 2022; 119:e2204242119. [PMID: 36279466 PMCID: PMC9636949 DOI: 10.1073/pnas.2204242119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 09/19/2022] [Indexed: 11/29/2022] Open
Abstract
The pathophysiological mechanisms underlying the constellation of symptoms that characterize COVID-19 are only incompletely understood. In an effort to fill these gaps, a "nicotinic hypothesis," which posits that nicotinic acetylcholine receptors (AChRs) act as additional severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) receptors, has recently been put forth. A key feature of the proposal (with potential clinical ramifications) is the suggested competition between the virus' spike protein and small-molecule cholinergic ligands for the receptor's orthosteric binding sites. This notion is reminiscent of the well-established role of the muscle AChR during rabies virus infection. To address this hypothesis directly, we performed equilibrium-type ligand-binding competition assays using the homomeric human α7-AChR (expressed on intact cells) as the receptor, and radio-labeled α-bungarotoxin (α-BgTx) as the orthosteric-site competing ligand. We tested different SARS-CoV-2 spike protein peptides, the S1 domain, and the entire S1-S2 ectodomain, and found that none of them appreciably outcompete [125I]-α-BgTx in a specific manner. Furthermore, patch-clamp recordings showed no clear effect of the S1 domain on α7-AChR-mediated currents. We conclude that the binding of the SARS-CoV-2 spike protein to the human α7-AChR's orthosteric sites-and thus, its competition with ACh, choline, or nicotine-is unlikely to be a relevant aspect of this complex disease.
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Affiliation(s)
- Nicole E. Godellas
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana–Champaign, Urbana, IL 61801
| | - Gisela D. Cymes
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana–Champaign, Urbana, IL 61801
| | - Claudio Grosman
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana–Champaign, Urbana, IL 61801
- Center for Biophysics and Quantitative Biology, University of Illinois at Urbana–Champaign, Urbana, IL 61801
- Neuroscience Program, University of Illinois at Urbana–Champaign, Urbana, IL 61801
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