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Zhu M, Huang S, Chen W, Pan G, Zhou Y. The effect of transcranial magnetic stimulation on cognitive function in post-stroke patients: a systematic review and meta-analysis. BMC Neurol 2024; 24:234. [PMID: 38969994 PMCID: PMC11225150 DOI: 10.1186/s12883-024-03726-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 06/12/2024] [Indexed: 07/07/2024] Open
Abstract
BACKGROUND AND OBJECTIVE Transcranial magnetic stimulation (TMS) is considered as a promising treatment option for post-stroke cognitive impairment (PSCI).Some meta-analyses have indicated that TMS can be effective in treating cognitive decline in stroke patients, but the quality of the studies included and the methodologies employed were less than satisfactory. Thus, this meta-analysis aimed to evaluate the efficacy and safety of TMS for treating post-stroke cognitive impairment. METHODS We searched online databases like PubMed, Embase, Cochrane Library, and Web of Science to retrieve randomized controlled trials (RCTs) of TMS for the treatment of patients with PSCI. Two independent reviewers identified relevant literature, extracted purpose-specific data, and the Cochrane Risk of Bias Assessment Scale was utilized to assess the potential for bias in the literature included in this study. Stata 17.0 software was used for data analysis. RESULTS A total of 10 studies involving 414 patients were included. The results of the meta-analysis showed that TMS was significantly superior to the control group for improving the overall cognitive function of stroke patients (SMD = 1.17, 95% CI [0.59, 1.75], I2 = 86.1%, P < 0.001). Subgroup analyses revealed that high-frequency rTMS (HF-rTMS), low-frequency rTMS (LF-rTMS), and intermittent theta burst stimulation (iTBS) all have a beneficial effect on the overall cognitive function of stroke patients. However, another subgroup analysis failed to demonstrate any significant advantage of TMS over the control group in terms of enhancing scores on the Loewenstein Occupational Therapy Cognitive Assessment (LOTCA) and Rivermead Behavioral Memory Test (RBMT) scales. Nonetheless, TMS demonstrated the potential to enhance the recovery of activities of daily living in stroke patients, as indicated by the Modified Barthel Index (MBI) (SMD = 0.76; 95% CI [0.22, 1.30], I2 = 52.6%, P = 0.121). CONCLUSION This meta-analysis presents evidence supporting the safety and efficacy of TMS as a non-invasive neural modulation tool for improving global cognitive abilities and activities of daily living in stroke patients. However, given the limited number of included studies, further validation of these findings is warranted through large-scale, multi-center, double-blind, high-quality randomized controlled trials. PROSPERO REGISTRATION NUMBER CRD42022381034.
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Affiliation(s)
- Mingjin Zhu
- Department of Rehabilitation Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Siyu Huang
- Graduate School, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Wenjun Chen
- Department of Pharmacy, Xixi Hospital of Hangzhou, Hangzhou, 310023, China
| | - Guoyuan Pan
- Department of Rehabilitation Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Yibo Zhou
- Department of Rehabilitation Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, China.
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Zhang M, Qin H, Xiang L, An L, Zhang X, Li K, Wu K, Fei X, Fan W, Xu X, Xu P, Wu Y, Mu D. Camellia sinensis polysaccharide attenuates inflammatory responses via the ROS-mediated pathway by endocytosis. Int J Biol Macromol 2024; 267:131674. [PMID: 38641285 DOI: 10.1016/j.ijbiomac.2024.131674] [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: 08/14/2023] [Revised: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 04/21/2024]
Abstract
Polysaccharide CSTPs extracted from Camellia sinensis tea-leaves possessed unique against oxidative damage by scavenging ROS. Herein, acid tea polysaccharide CSTPs-2 with tightly packed molecular structure was isolated, purified and characterized in this research. Furthermore, the effects of CSTPs-2 on ROS-involved inflammatory responses and its underlying mechanisms were investigated. The results suggest that CSTPs-2 dramatically reduced the inflammatory cytokines overexpression and LPS-stimulated cell damage. CSTPs-2 could trigger the dephosphorylation of downstream AKT/MAPK/NF-κB signaling proteins and inhibit nuclear transfer of p-NF-κB to regulate the synthesis and release of inflammatory mediators in LPS-stimulated cells by ROS scavenging. Importantly, the impact of CSTPs-2 in downregulating pro-inflammatory cytokines and mitigating ROS overproduction is associated with clathrin- or caveolae-mediated endocytosis uptake mechanisms, rather than TLR-4 receptor-mediated endocytosis. This study presents a novel perspective for investigating the cellular uptake mechanism of polysaccharides in the context of anti-inflammatory mechanisms.
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Affiliation(s)
- Mingzhu Zhang
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Huaguang Qin
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Lijun Xiang
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Lujing An
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Xiaoling Zhang
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Kexin Li
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Kai Wu
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Xinyao Fei
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Wenhui Fan
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Xinyun Xu
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Pengfei Xu
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China
| | - Yan Wu
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China.
| | - Dan Mu
- The Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, School of Life Science, Anqing Normal University, Anqing 246011, China.
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Sadeghzadeh J, Hosseini L, Mobed A, Zangbar HS, Jafarzadeh J, Pasban J, Shahabi P. The Impact of Cerebral Ischemia on Antioxidant Enzymes Activity and Neuronal Damage in the Hippocampus. Cell Mol Neurobiol 2023; 43:3915-3928. [PMID: 37740074 DOI: 10.1007/s10571-023-01413-w] [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: 02/27/2023] [Accepted: 09/09/2023] [Indexed: 09/24/2023]
Abstract
Cerebral ischemia and subsequent reperfusion, leading to reduced blood supply to specific brain areas, remain significant contributors to neurological damage, disability, and mortality. Among the vulnerable regions, the subcortical areas, including the hippocampus, are particularly susceptible to ischemia-induced injuries, with the extent of damage influenced by the different stages of ischemia. Neural tissue undergoes various changes and damage due to intricate biochemical reactions involving free radicals, oxidative stress, inflammatory responses, and glutamate toxicity. The consequences of these processes can result in irreversible harm. Notably, free radicals play a pivotal role in the neuropathological mechanisms following ischemia, contributing to oxidative stress. Therefore, the function of antioxidant enzymes after ischemia becomes crucial in preventing hippocampal damage caused by oxidative stress. This study explores hippocampal neuronal damage and enzymatic antioxidant activity during ischemia and reperfusion's early and late stages.
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Affiliation(s)
- Jafar Sadeghzadeh
- Department of Neuroscience and Cognition, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran
| | - Leila Hosseini
- Research Center of Psychiatry and Behavioral Sciences, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran
| | - Ahmad Mobed
- Physical Medicine and Rehabilitation Research Center, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran
| | - Hamid Soltani Zangbar
- Department of Neuroscience and Cognition, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran
| | - Jaber Jafarzadeh
- Department of Community Nutrition Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran
| | - Jamshid Pasban
- Department of Neuroscience and Cognition, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran
| | - Parviz Shahabi
- Department of Physiology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Islamic Republic of Iran.
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Myers SJ, Agapova V, Patel SV, Hayes SH, Sposato LA, Allman BL, Whitehead SN. Acute minocycline treatment inhibits microglia activation, reduces infarct volume, and has domain-specific effects on post-ischemic stroke cognition in rats. Behav Brain Res 2023; 455:114680. [PMID: 37742808 DOI: 10.1016/j.bbr.2023.114680] [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: 04/28/2023] [Revised: 08/23/2023] [Accepted: 09/19/2023] [Indexed: 09/26/2023]
Abstract
Ischemic stroke affects millions of individuals worldwide and a high prevalence of survivors experience cognitive deficits. At present, the underlying mechanisms that drive post-stroke cognitive decline are not well understood. Microglia play a critical role in the post-stroke inflammatory response, but experimental studies show that an accumulation of chronically activated microglia can be harmful and associates with cognitive impairment. This study assessed the effect of acute post-stroke minocycline treatment on chronic microglia and astrocyte expression within the infarct and remote white matter regions, as well as its effect on various domains of cognitive function post-stroke. Nine-month-old male rats received an injection of endothelin-1 into the right dorsal striatum to induce transient focal ischemia, and then were treated with minocycline or saline for 4 days post-stroke. Rats were tested using a series of lever-pressing tasks and the Morris water maze to assess striatal-based learning, cognitive flexibility, and spatial learning and reference memory. We found that minocycline-treated rats had smaller stroke-induced infarcts and less microglia activation in the infarct area and remote white matter regions compared to saline-treated rats at 28 days post-stroke. The behavioural testing results differed according to the cognitive domain; whereas minocycline-treated rats trended towards improved striatal-based learning in a lever-pressing task, but cognitive flexibility was unaffected during the subsequent set-shifting task. Furthermore, minocycline treatment unexpectedly impaired spatial learning, yet it did not alter reference memory. Collectively, we show that post-stroke minocycline treatment can reduce chronic microglia activation even in remote brain regions, with domain-specific effects on cognitive function.
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Affiliation(s)
- S J Myers
- Vulnerable Brain Laboratory, Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - V Agapova
- Vulnerable Brain Laboratory, Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - S V Patel
- Vulnerable Brain Laboratory, Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - S H Hayes
- Vulnerable Brain Laboratory, Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - L A Sposato
- Department of Clinical Neurological Sciences, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - B L Allman
- Vulnerable Brain Laboratory, Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada
| | - S N Whitehead
- Vulnerable Brain Laboratory, Department of Anatomy and Cell Biology, Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada.
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Teleanu DM, Niculescu AG, Lungu II, Radu CI, Vladâcenco O, Roza E, Costăchescu B, Grumezescu AM, Teleanu RI. An Overview of Oxidative Stress, Neuroinflammation, and Neurodegenerative Diseases. Int J Mol Sci 2022; 23:ijms23115938. [PMID: 35682615 PMCID: PMC9180653 DOI: 10.3390/ijms23115938] [Citation(s) in RCA: 204] [Impact Index Per Article: 102.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 12/14/2022] Open
Abstract
Oxidative stress has been linked with a variety of diseases, being involved in the debut and/or progress of several neurodegenerative disorders. This review intends to summarize some of the findings that correlate the overproduction of reactive oxygen species with the pathophysiology of Alzheimer’s disease, Parkinson’s disease, Huntington’s disease, and amyotrophic lateral sclerosis. Oxidative stress was also noted to modify the inflammatory response. Even though oxidative stress and neuroinflammation are two totally different pathological events, they are linked and affect one another. Nonetheless, there are still several mechanisms that need to be understood regarding the onset and the progress of neurodegenerative diseases in order to develop efficient therapies. As antioxidants are a means to alter oxidative stress and slow down the symptoms of these neurodegenerative diseases, the most common antioxidants, enzymatic as well as non-enzymatic, have been mentioned in this paper as therapeutic options for the discussed disorders.
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Affiliation(s)
- Daniel Mihai Teleanu
- “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (D.M.T.); (O.V.); (E.R.); (R.I.T.)
| | - Adelina-Gabriela Niculescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (I.I.L.)
| | - Iulia Ioana Lungu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (I.I.L.)
- National Institute of Laser, Plasma and Radiation Physics (NILPRP), 077125 Magurele, Romania
| | - Crina Ioana Radu
- Department of Neurosurgery (I), Bucharest University Emergency Hospital, 050098 Bucharest, Romania;
| | - Oana Vladâcenco
- “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (D.M.T.); (O.V.); (E.R.); (R.I.T.)
- Department of Pediatric Neurology, “Dr. Victor Gomoiu” Children’s Hospital, 022102 Bucharest, Romania
| | - Eugenia Roza
- “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (D.M.T.); (O.V.); (E.R.); (R.I.T.)
- Department of Pediatric Neurology, “Dr. Victor Gomoiu” Children’s Hospital, 022102 Bucharest, Romania
| | - Bogdan Costăchescu
- “Gr. T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania;
- “Prof. Dr. N. Oblu” Emergency Clinical Hospital, 700309 Iasi, Romania
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania; (A.-G.N.); (I.I.L.)
- ICUB—Research Institute of University of Bucharest, University of Bucharest, 050657 Bucharest, Romania
- Academy of Romanian Scientists, Ilfov No. 3, 050044 Bucharest, Romania
- Correspondence:
| | - Raluca Ioana Teleanu
- “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (D.M.T.); (O.V.); (E.R.); (R.I.T.)
- Department of Pediatric Neurology, “Dr. Victor Gomoiu” Children’s Hospital, 022102 Bucharest, Romania
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