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Koyama S, Yagita K, Hamasaki H, Noguchi H, Shijo M, Matsuzono K, Takase KI, Kai K, Aishima SI, Itoh K, Ninomiya T, Sasagasako N, Honda H. Novel method for classification of prion diseases by detecting PrP res signal patterns from formalin-fixed paraffin-embedded samples. Prion 2024; 18:40-53. [PMID: 38627365 PMCID: PMC11028012 DOI: 10.1080/19336896.2024.2337981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 03/27/2024] [Indexed: 04/19/2024] Open
Abstract
Prion disease is an infectious and fatal neurodegenerative disease. Western blotting (WB)-based identification of proteinase K (PK)-resistant prion protein (PrPres) is considered a definitive diagnosis of prion diseases. In this study, we aimed to detect PrPres using formalin-fixed paraffin-embedded (FFPE) specimens from cases of sporadic Creutzfeldt-Jakob disease (sCJD), Gerstmann-Sträussler-Scheinker disease (GSS), glycosylphosphatidylinositol-anchorless prion disease (GPIALP), and V180I CJD. FFPE samples were prepared after formic acid treatment to inactivate infectivity. After deparaffinization, PK digestion was performed, and the protein was extracted. In sCJD, a pronounced PrPres signal was observed, with antibodies specific for type 1 and type 2 PrPres exhibited a strong or weak signals depending on the case. Histological examination of serial sections revealed that the histological changes were compatible with the biochemical characteristics. In GSS and GPIALP, prion protein core-specific antibodies presented as PrPres bands at 8-9 kDa and smear bands, respectively. However, an antibody specific for the C-terminus presented as smears in GSS, with no PrPres detected in GPIALP. It was difficult to detect PrPres in V180I CJD. Collectively, our findings demonstrate the possibility of detecting PrPres in FFPE and classifying the prion disease types. This approach facilitates histopathological and biochemical evaluation in the same sample and is safe owing to the inactivation of infectivity. Therefore, it may be valuable for the diagnosis and research of prion diseases.
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Affiliation(s)
- Sachiko Koyama
- Department of Neuropathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kaoru Yagita
- Department of Neuropathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hideomi Hamasaki
- Department of Neuropathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hideko Noguchi
- Department of Neuropathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masahiro Shijo
- Department of Neuropathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- Department of Neurology, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Kosuke Matsuzono
- Division of Neurology, Department of Medicine, Jichi Medical University, Tochigi, Japan
| | | | - Keita Kai
- Department of Pathology, Saga University Hospital, Saga, Japan
| | - Shin-Ichi Aishima
- Department of Scientific Pathology Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kyoko Itoh
- Department of Pathology and Applied Neurobiology, Kyoto Prefectural University of Medicine Graduate School of Medical Science, Kyoto, Japan
| | - Toshiharu Ninomiya
- Department of Epidemiology and Public Health, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Naokazu Sasagasako
- Department of Neurology, Neuro-Muscular Center, National Hospital Organization, Omuta National Hospital, Fukuoka, Japan
| | - Hiroyuki Honda
- Department of Neuropathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- Neuropathology Center, National Hospital Organization, Omuta National Hospital, Fukuoka, Japan
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Ghosh S, Kumar V, Mukherjee H, Saini S, Gupta S, Chauhan S, Kushwaha K, Lahiri D, Sircar D, Roy P. Assessment of the mechanistic role of an Indian traditionally used ayurvedic herb Bacopa monnieri (L.)Wettst. for ameliorating oxidative stress in neuronal cells. J Ethnopharmacol 2024; 328:117899. [PMID: 38341111 DOI: 10.1016/j.jep.2024.117899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 12/23/2023] [Accepted: 02/07/2024] [Indexed: 02/12/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE This study has important ethnopharmacological implications since it systematically investigated the therapeutic potential of Bacopa monnieri(L.) Wettst. (Brahmi) in treating neurological disorders characterized by oxidative stress-a growing issue in the aging population. Bacopa monnieri, which is strongly rooted in Ayurveda, has long been recognized for its neuroprotective and cognitive advantages. The study goes beyond conventional wisdom by delving into the molecular complexities of Bacopa monnieri, particularly its active ingredient, Bacoside-A, in countering oxidative stress. The study adds to the ethnopharmacological foundation for using this herbal remedy in the context of neurodegenerative disorders by unravelling the scientific underpinnings of Bacopa monnieri's effectiveness, particularly at the molecular level, against brain damage and related conditions influenced by oxidative stress. This dual approach, which bridges traditional wisdom and modern investigation, highlights Bacopa monnieri's potential as a helpful natural remedy for oxidative stress-related neurological diseases. AIM OF THE STUDY The aim of this study is to investigate the detailed molecular mechanism of action (in vitro, in silico and in vivo) of Bacopa monnieri (L.) Wettst. methanolic extract and its active compound, Bacoside-A, against oxidative stress in neurodegenerative disorders. MATERIALS AND METHODS ROS generation activity, mitochondrial membrane potential, calcium deposition and apoptosis were studied through DCFDA, Rhodamine-123, FURA-2 AM and AO/EtBr staining respectively. In silico study to check the effect of Bacoside-A on the Nrf-2 and Keap1 axis was performed through molecular docking study and validated experimentally through immunofluorescence co-localization study. In vivo antioxidant activity of Bacopa monnieri extract was assessed by screening the oxidative stress markers and stress-inducing hormone levels as well as through histopathological analysis of tissues. RESULTS The key outcome of this study is that the methanolic extract of Bacopa monnieri (BME) and its active component, Bacoside-A, protect against oxidative stress in neurodegenerative diseases. At 100 and 20 μg/ml, BME and Bacoside-A respectively quenched ROS, preserved mitochondrial membrane potential, decreased calcium deposition, and inhibited HT-22 mouse hippocampus cell death. BME and Bacoside-A regulated the Keap1 and Nrf-2 axis and their downstream antioxidant enzyme-specific genes to modify cellular antioxidant machinery. In vivo experiments utilizing rats subjected to restrained stress indicated that pre-treatment with BME (50 mg/kg) downregulated oxidative stress markers and stress-inducing hormones, and histological staining demonstrated that BME protected the neuronal cells of the Cornu Ammonis (CA1) area in the hippocampus. CONCLUSIONS Overall, the study suggests that Bacopa monnieri(L.) Wettst. has significant potential as a natural remedy for neurodegenerative disorders, and its active compounds could be developed as new drugs for the prevention and treatment of oxidative stress-related diseases.
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Affiliation(s)
- Souvik Ghosh
- Molecular Endocrinology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India; Biomaterials and Multiscale Mechanics Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India; Centre of Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Viney Kumar
- Molecular Endocrinology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Haimanti Mukherjee
- Molecular Endocrinology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Saakshi Saini
- Molecular Endocrinology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Sumeet Gupta
- Department of Pharmacy, Maharshi Markandeshwar University (Deemed to Be University), Mullana, Haryana, 133207, India
| | - Samrat Chauhan
- Chitkara College of Pharmacy, Chitkara University, Rajpura, Punjab, 140401, India
| | - Komal Kushwaha
- Plant Molecular Biology Group, Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Debrupa Lahiri
- Biomaterials and Multiscale Mechanics Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India; Centre of Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Debabrata Sircar
- Plant Molecular Biology Group, Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Partha Roy
- Molecular Endocrinology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India.
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Zhong M, Xu QQ, Hu Z, Yang W, Lin ZX, Xian YF. Tianma-Gouteng pair ameliorates the cognitive deficits on two transgenic mouse models of Alzheimer's disease. J Ethnopharmacol 2024; 328:118113. [PMID: 38548119 DOI: 10.1016/j.jep.2024.118113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 03/21/2024] [Accepted: 03/25/2024] [Indexed: 04/02/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Alzheimer's disease (AD) is a progressive neurodegenerative disease. Tianma-Gouteng Pair (TGP), commonly prescribed as a pair-herbs, can be found in many Chinese medicine formulae to treat brain diseases. However, the neuroprotective effects and molecular mechanisms of TGP remained unexplored. AIM OF THE STUDY This study investigated the difference between the TgCRND8 and 5 × FAD transgenic mice, the anti-AD effects of TGP, and underlying molecular mechanisms of TGP against AD through the two mouse models. METHODS Briefly, three-month-old TgCRND8 and 5 × FAD mice were orally administered with TGP for 4 and 6 months, respectively. Behavioral tests were carried out to determine the neuropsychological functions. Moreover, immunofluorescence and western blotting assays were undertaken to reveal the molecular mechanisms of TGP. RESULTS Although TgCRND8 and 5 × FAD mice had different beta-amyloid (Aβ) burdens, neuroinflammation status, and cognition impairments, TGP exerted neuroprotective effects against AD in the two models. In detail, behavioral tests revealed that TGP treatment markedly ameliorated the anxiety-like behavior, attenuated the recognition memory deficits, and increased the spatial learning ability as well as the reference memory of TgCRND8 and 5 × FAD mice. Moreover, TGP treatment could regulate the beta-amyloid precursor protein (APP) processing by inhibiting the Aβ production enzymes such as β- and γ-secretases and activating Aβ degrading enzyme to reduce Aβ accumulation. In addition, TGP reduced the Aβ42 level, the ratio of Aβ42/Αβ40, Aβ accumulation, and tau hyperphosphorylation in both the 5 × FAD and TgCRND8 mouse models. Furthermore, TGP ameliorated neuroinflammation by decreasing the densities of activated microglia and astrocytes, and inhibiting the production of inflammatory cytokines. TGP upregulated the SIRT1 and AMPK, and downregulated sterol response element binding protein 2 (SREBP2) in the brain of TgCRND8 mice and deactivation of the EPhA4 and c-Abl in the brain tissues of 5 × FAD mice. CONCLUSION Our experiments for the first time revealed the neuroprotective effects and molecular mechanism of TGP on 5 × FAD and TgCRND8 transgenic mouse models of different AD stages. TGP decreased the level of Aβ aggregates, improved the tauopathy, and reduced the neuroinflammation by regulation of the SIRT1/AMPK/SREBP2 axis and deactivation of EPhA4/c-Abl signaling pathway in the brains of TgCRND8 and 5 × FAD mice, respectively. All these findings unequivocally confirmed that the TGP would be promising in developing into an anti-AD therapeutic pharmaceutical.
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Affiliation(s)
- Mei Zhong
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - Qing-Qing Xu
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - Zhen Hu
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - Wen Yang
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - Zhi-Xiu Lin
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China; Hong Kong Institute of Integrative Medicine, The Chinese University of Hong Kong, Hong Kong, Shatin, N.T., Hong Kong SAR, PR China; Li Dak Sum Yip Yio Chin R&D Centre for Chinese Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China.
| | - Yan-Fang Xian
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China.
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Bao X, He Y, Huang L, Li H, Li Q, Huang Y. Sinomenine exerts a neuroprotective effect on PD mouse model through inhibiting PI3K/AKT/mTOR pathway to enhance autophagy. Int J Neurosci 2024; 134:301-309. [PMID: 35815397 DOI: 10.1080/00207454.2022.2100780] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 06/21/2022] [Accepted: 06/30/2022] [Indexed: 10/17/2022]
Abstract
BACKGROUND Parkinson's disease (PD), as a chronic and progressive neurodegenerative disease, is associated with autophagy. This study focused on the regulation of sinomenine (SN) on autophagy in PD and its related mechanism. METHODS The PD mouse model was constructed by MPTP inducement, and the mouse motor function after modeling and SN treatment was examined by rotarod, grip strength, and foot printing tests. Tyrosine hydroxylase (TH)/LC3B-positive neurons in the substantia nigra pars compacta of mouse brains were detected by immunofluorescence. The expressions of proteins related to autophagy (Beclin1, p62, LC3-I and LC3-II) and phosphorylated phosphoinositide 3-kinase (PI3K)/AKT/mechanistic target of rapamycin kinase (mTOR) signaling pathway were measured by western blot. Rescue experiments were performed to determine the effects of MHY1485 (mTOR activator) on SN-treated PD mice. RESULTS SN potentiated the motor ability in PD mice, promoted the survival of dopaminergic neurons, increased the protein expression level of Beclin1, LC3-II/LC3-I ratio and LC3B-positive neurons, lowered the protein expression level of p62 and inactivated PI3K/AKT/mTOR pathway in the substantia nigra tissue of mouse brains. Moreover, MHY1485 reversed the above effects of SN on PD mice via reactivating PI3K/AKT/mTOR pathway. CONCLUSION SN augments the autophagy of dopaminergic neurons via inhibiting the PI3K/AKT/mTOR pathway and exerts a neuroprotective effect on PD mice.
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Affiliation(s)
- Xi Bao
- Department of Geriatrics, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Yingchun He
- Department of Geriatrics, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Lin Huang
- Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Haichang Li
- Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Qiang Li
- Department of Geriatrics, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Yun Huang
- Department of Chinese Medicine Gynecology, Hangzhou TCM Hospital, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
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Song LJ, Sui RX, Wang J, Miao Q, He Y, Yin JJ, An J, Ding ZB, Han QX, Wang Q, Yu JZ, Xiao BG, Ma CG. Targeting the differentiation of astrocytes by Bilobalide in the treatment of Parkinson's disease model. Int J Neurosci 2024; 134:274-291. [PMID: 36037147 DOI: 10.1080/00207454.2022.2100778] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 06/27/2022] [Accepted: 06/30/2022] [Indexed: 12/27/2022]
Abstract
Background: The etiology of Parkinson's disease (PD), a chronic and progressive neurodegenerative disease, is multifactorial but not fully unknown. Until now, no drug has been proven to have neuroprotective or neuroregenerative effects in patients with PD. Objectives: To observe the therapeutic potential of Bilobalide (BB), a constituent of ginkgo biloba, in MPTP-induced PD model, and explore its possible mechanisms of action. Material and Methods: Mice were randomly divided into three groups: healthy group, MPTP group and MPTP + BB group. PD-related phenotypes were induced by intraperitoneal injection of MPTP into male C57BL/6 mice, and BB (40 mg/kg/day) was intraperitoneally given for 7 consecutive days at the end of modeling. The injection of saline was set up as the control in a similar manner. Results: BB induced M2 polarization of microglia, accompanied by inhibition of neuroinflammation in the brain. Simultaneously, BB promoted the expression of BDNF in astrocytes and neurons, and expression of GDNF in neurons. Most interestingly, BB enhanced the formation of GFAP+ astrocytes expressing nestin, Brn2 and Ki67, as well as the transformation of GFAP+ astrocytes expressing tyrosine hydroxylase around subventricular zone, providing experimental evidence that BB could promote the conversion of astrocytes into TH+ dopamine neurons in vivo and in vitro. Conclusions: These results suggest the natural product BB may utilize multiple pathways to modify degenerative process of TH+ neurons, revealing an exciting opportunity for novel neuroprotective therapeutics. However, its multi-target and important mechanisms need to be further explored.
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Affiliation(s)
- Li-Juan Song
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine/Research Center of Neurobiology, Shanxi University of Chinese Medicine, Taiyuan, China
| | - Ruo-Xuan Sui
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine/Research Center of Neurobiology, Shanxi University of Chinese Medicine, Taiyuan, China
- Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jing Wang
- The Department of Neurology, Shanxi Medical University, Taiyuan, China
| | - Qiang Miao
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine/Research Center of Neurobiology, Shanxi University of Chinese Medicine, Taiyuan, China
| | - Yan He
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine/Research Center of Neurobiology, Shanxi University of Chinese Medicine, Taiyuan, China
| | - Jun-Jun Yin
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine/Research Center of Neurobiology, Shanxi University of Chinese Medicine, Taiyuan, China
| | - Jun An
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine/Research Center of Neurobiology, Shanxi University of Chinese Medicine, Taiyuan, China
| | - Zhi-Bin Ding
- The Department of Neurology, Shanxi Medical University, Taiyuan, China
| | - Qing-Xian Han
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine/Research Center of Neurobiology, Shanxi University of Chinese Medicine, Taiyuan, China
| | - Qing Wang
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine/Research Center of Neurobiology, Shanxi University of Chinese Medicine, Taiyuan, China
| | - Jie-Zhong Yu
- The NO. 1 Affiliated Hospital/Institute of Brain Science, Shanxi Datong University, Datong, China
| | - Bao-Guo Xiao
- Institute of Neurology, Huashan Hospital, Institutes of Brain Science and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, China
| | - Cun-Gen Ma
- The Key Research Laboratory of Benefiting Qi for Acting Blood Circulation Method to Treat Multiple Sclerosis of State Administration of Traditional Chinese Medicine/Research Center of Neurobiology, Shanxi University of Chinese Medicine, Taiyuan, China
- The Department of Neurology, Shanxi Medical University, Taiyuan, China
- The NO. 1 Affiliated Hospital/Institute of Brain Science, Shanxi Datong University, Datong, China
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Turco A, Primiceri E, Chiriacò MS, La Pesa V, Ferrara F, Riva N, Quattrini A, Romano A, Maruccio G. Advancing amyotrophic lateral sclerosis disease diagnosis: A lab-on-chip electrochemical immunosensor for ultra-sensitive TDP-43 protein detection and monitoring in serum patients'. Talanta 2024; 273:125866. [PMID: 38490025 DOI: 10.1016/j.talanta.2024.125866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 12/22/2023] [Accepted: 02/29/2024] [Indexed: 03/17/2024]
Abstract
The global increase in population aging has led to a rise in neurodegenerative diseases (NDs), posing significant challenges to public health. Developing selective and specific biomarkers for early diagnosis and drug development is crucial addressing the growing burden of NDs. In this context, the RNA-binding protein TDP-43 has emerged as a promising biomarker for amyotrophic lateral sclerosis (ALS), frontotemporal lobar degeneration (FTLD), and TDP-43-associated proteinopathies. However, existing detection methods suffer from limitations such as cost, complexity, and operator dependence. Here, we present a novel electrochemical biosensor integrated into a lab-on-chip (LoC) platform to detect TDP-43. The sensor utilizes electrosynthesized polypyrrole derivatives with carboxylic groups for transducer functionalization, enabling targeted immobilization of TDP-43 antibodies. Differential pulsed voltammetry (DPV) is used for the indirect detection and quantification of TDP-43. The chip exhibits rapid response, good reproducibility, a linear detection range, and sensitivity from 0.01 ng/mL to 25 ng/mL of TDP-43 protein concentration with a LOD = 10 pg/mL. Furthermore, successful TDP-43 detection in complex matrices like serum of ALS patients and healthy individuals demonstrates its potential as a point-of-care diagnostic device. This electrochemical biosensor integrated into a chip offers good sensitivity, rapid response, and robust performance, providing a promising avenue for advancing neurodegenerative disease diagnostics and therapeutic development.
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Affiliation(s)
- Antonio Turco
- CNR Nanotec Institute of Nanotechnology, Via Monteroni, 73100, Lecce, Italy; IRCCS San Raffaele Scientific Institute, Neuropathology Unit, Institute of Experimental Neurology, 20132, Milan, Italy
| | | | | | - Velia La Pesa
- IRCCS San Raffaele Scientific Institute, Neuropathology Unit, Institute of Experimental Neurology, 20132, Milan, Italy
| | - Francesco Ferrara
- CNR Nanotec Institute of Nanotechnology, Via Monteroni, 73100, Lecce, Italy
| | - Nilo Riva
- IRCCS San Raffaele Scientific Institute, Neuropathology Unit, Institute of Experimental Neurology, 20132, Milan, Italy
| | - Angelo Quattrini
- IRCCS San Raffaele Scientific Institute, Neuropathology Unit, Institute of Experimental Neurology, 20132, Milan, Italy
| | - Alessandro Romano
- IRCCS San Raffaele Scientific Institute, Neuropathology Unit, Institute of Experimental Neurology, 20132, Milan, Italy
| | - Giuseppe Maruccio
- CNR Nanotec Institute of Nanotechnology, Via Monteroni, 73100, Lecce, Italy; Omnics Research Group, Department of Mathematics and Physics "Ennio De Giorgi", University of Salento, Via per Monteroni, 73100, Lecce, Italy
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Giarola JF, Santos J, Estevez MC, Ventura S, Pallarès I, Lechuga LM. An α-helical peptide-based plasmonic biosensor for highly specific detection of α-synuclein toxic oligomers. Anal Chim Acta 2024; 1304:342559. [PMID: 38637056 DOI: 10.1016/j.aca.2024.342559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/20/2024] [Accepted: 03/28/2024] [Indexed: 04/20/2024]
Abstract
BACKGROUND α-Synuclein (αS) aggregation is the main neurological hallmark of a group of neurodegenerative disorders, collectively referred to as synucleinopathies, of which Parkinson's disease (PD) is the most prevalent. αS oligomers are elevated in the cerebrospinal fluid (CSF) of PD patients, standing as a biomarker for disease diagnosis. However, methods for early PD detection are still lacking. We have recently identified the amphipathic 22-residue peptide PSMα3 as a high-affinity binder of αS toxic oligomers. PSMα3 displayed excellent selectivity and reproducibility, binding to αS toxic oligomers with affinities in the low nanomolar range and without detectable cross-reactivity with functional monomeric αS. RESULTS In this work, we leveraged these PSMα3 unique properties to design a plasmonic-based biosensor for the direct detection of toxic oligomers under label-free conditions. SIGNIFICANCE AND NOVELTY We describe the integration of the peptide in a lab-on-a-chip plasmonic platform suitable for point-of-care measurements of αS toxic oligomers in CSF samples in real-time and at an affordable cost, providing an innovative biosensor for PD early diagnosis in the clinic.
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Affiliation(s)
- Juliana Fátima Giarola
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Jaime Santos
- Institut de Biotecnologia I Biomedicina and Departament de Bioquímica I Biologia Molecular, Universitat Autònoma de Barcelona, 08193, Barcelona, Spain
| | - M-Carmen Estevez
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain.
| | - Salvador Ventura
- Institut de Biotecnologia I Biomedicina and Departament de Bioquímica I Biologia Molecular, Universitat Autònoma de Barcelona, 08193, Barcelona, Spain
| | - Irantzu Pallarès
- Institut de Biotecnologia I Biomedicina and Departament de Bioquímica I Biologia Molecular, Universitat Autònoma de Barcelona, 08193, Barcelona, Spain.
| | - Laura M Lechuga
- Nanobiosensors and Bioanalytical Applications Group (NanoB2A), Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, CIBER-BBN and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
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Tian X, Zhao Z, Zhao J, Su D, He B, Shi C, Shi Y. Transcriptomic analysis to identify genes associated with hypothalamus vulnerability in aging mice with cognitive decline. Behav Brain Res 2024; 465:114943. [PMID: 38452974 DOI: 10.1016/j.bbr.2024.114943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 03/01/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024]
Abstract
The normal aging process is accompanied by cognitive decline, and previous studies have indicated the crucial role of the hypothalamus in regulating both aging and cognition. However, the precise molecular mechanism underlying this relationship remains unclear. Therefore, this present study aimed to identify potential predictors of cognitive decline associated with aging specifically within the hypothalamus. To achieve this, we employed Morris water maze (MWM) testing to assess learning and memory differences between young and aged mice. Additionally, transcriptome sequencing was conducted on the hypothalamus of young and aged mice to identify potential genes. Subsequently, GO and KEGG analyses were performed to investigate the functions of differentially expressed genes (DEGs) and their associated biological pathways. Finally, the results obtained from sequencing analysis were further validated using qRT-PCR. Notably, MWM testing revealed a significant decrease in spatial learning and memory ability among aged mice. According to KEGG analysis, the DEGs primarily encompassed various biochemical signaling pathways related to immune system (e.g., C3; C4b; Ccl2; Ccl7; Cebpb; Clec7a; Col3a1; Cxcl10; Cxcl2; Fosb; Fosl1; Gbp5; H2-Ab1; Hspa1a; Hspa1b; Icam1; Il1b; Itga5; Itgax; Lilrb4a; Plaur; Ptprc; Serpine1; Tnfrsf10b; Tnfsf10), neurodegenerative disease (e.g., Atp2a1; Creb5; Fzd10; Hspa1a; Hspa1b; Il1b; Kcnj10; Nxf3; Slc6a3; Tubb6; Uba1y; Wnt9b), nervous system function (e.g., Chrna4; Chrna6; Creb5; Slc6a3),and aging (e.g., Creb5; Hspa1a; Hspa1b) among others. These identified genes may serve as potential predictors for cognitive function in elderly individuals and will provide a crucial foundation for further exploration into the underlying molecular mechanisms.
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Affiliation(s)
- Xiaofeng Tian
- Department of clinical laboratory, the Third Affiliated Hospital of Zhengzhou University. Zhengzhou, China
| | - Zhixing Zhao
- Department of clinical laboratory, the Third Affiliated Hospital of Zhengzhou University. Zhengzhou, China
| | - Jing Zhao
- Department of clinical laboratory, the Third Affiliated Hospital of Zhengzhou University. Zhengzhou, China
| | - Dongmei Su
- NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Beijing, China
| | - Bin He
- NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Beijing, China
| | - Cuige Shi
- NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Beijing, China.
| | - Ying Shi
- Department of clinical laboratory, the Third Affiliated Hospital of Zhengzhou University. Zhengzhou, China.
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9
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Tan S, Wu L, Liu J, Wu Z, Cheng Q, Qu Q, Zhu L, Yan Y, Wu H, Ling TJ, Liu RT, Yang S. Quercetin-3-O-glc-1-3-rham-1-6-glucoside decreases Aβ production, inhibits Aβ aggregation and neurotoxicity, and prohibits the production of inflammatory cytokines. Eur J Pharmacol 2024; 970:176491. [PMID: 38503399 DOI: 10.1016/j.ejphar.2024.176491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 01/24/2024] [Accepted: 03/11/2024] [Indexed: 03/21/2024]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disease with the hallmark of aggregation of beta-amyloid (Aβ) into extracellular fibrillar deposition. Accumulating evidence suggests that soluble toxic Aβ oligomers exert diverse roles in neuronal cell death, oxidative stress, neuroinflammation, and the eventual pathogenesis of AD. Aβ is derived from the sequential cleavage of amyloid-β precursor protein (APP) by β-secretase (BACE1) and γ-secretase. The current effect of single targeting is not ideal for the treatment of AD. Therefore, developing multipotent agents with multiple properties, including anti-Aβ generation and anti-Aβ aggregation, is attracting more attention for AD treatment. Previous studies indicated that Quercetin was able to attenuate the effects of several pathogenetic factors in AD. Here, we showed that naturally synthesized Quercetin-3-O-glc-1-3-rham-1-6-glucoside (YCC31) could inhibit Aβ production by reducing β-secretase activity. Further investigations indicated that YCC31 could suppress toxic Aβ oligomer formation by directly binding to Aβ. Moreover, YCC31 could attenuate Aβ-mediated neuronal death, ROS and NO production, and pro-inflammatory cytokines release. Taken together, YCC31 targeting multiple pathogenetic factors deserves further investigation for drug development of AD.
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Affiliation(s)
- Shuo Tan
- School of Basic Medical Sciences, School of Life Sciences, Anhui Medical University, Hefei, 230032, China
| | - Linmei Wu
- School of Basic Medical Sciences, School of Life Sciences, Anhui Medical University, Hefei, 230032, China
| | - Jiayi Liu
- School of Basic Medical Sciences, School of Life Sciences, Anhui Medical University, Hefei, 230032, China
| | - Zhaoyuan Wu
- School of Basic Medical Sciences, School of Life Sciences, Anhui Medical University, Hefei, 230032, China
| | - Qiang Cheng
- School of Basic Medical Sciences, School of Life Sciences, Anhui Medical University, Hefei, 230032, China
| | - Qiuhao Qu
- School of Basic Medical Sciences, School of Life Sciences, Anhui Medical University, Hefei, 230032, China
| | - Lianghao Zhu
- School of Basic Medical Sciences, School of Life Sciences, Anhui Medical University, Hefei, 230032, China
| | - Yizhu Yan
- School of Basic Medical Sciences, School of Life Sciences, Anhui Medical University, Hefei, 230032, China
| | - Hao Wu
- School of Basic Medical Sciences, School of Life Sciences, Anhui Medical University, Hefei, 230032, China
| | - Tie-Jun Ling
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036, China
| | - Rui-Tian Liu
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China.
| | - Shigao Yang
- School of Basic Medical Sciences, School of Life Sciences, Anhui Medical University, Hefei, 230032, China.
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10
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Dong T, Li H. Neurological risks arising from the bioaccumulation of heavy metal contaminants: A focus on mercury. Environ Toxicol 2024; 39:2692-2705. [PMID: 38240341 DOI: 10.1002/tox.24119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/18/2023] [Accepted: 12/25/2023] [Indexed: 04/17/2024]
Abstract
This study investigated the concentrations of heavy metals in the water sources of the upstream region of the Huangpu River, the Yangtze River Estuary, and various areas in Shanghai, as well as the heavy metal concentrations in the blood of Shanghai residents. It aimed to analyze the heavy metal elements absorbed by the human body and the resulting pathological effects. The results revealed that surface water primarily contains five heavy metals: copper (Cu), lead (Pb), zinc (Zn), arsenic (As), and mercury (Hg), while water sediments primarily contain seven heavy metals: Cu, cadmium (Cd), Pb, chromium (Cr), Zn, As, and Hg. The main heavy metals present in the human body are Pb, Hg, As, and Cd. By reviewing previous articles, it was found that heavy metal concentrations in human blood are higher than those in surface water, suggesting uncertainties in the heavy metal content of surface water and its tendency to settle at the bottom. Furthermore, a comparison of heavy metal content in sediments revealed that Hg is the most readily absorbed heavy metal by the human body and is also a toxic environmental pollutant. Within the cell, Hg is highly toxic to mitochondria and may cause oxidative stress and neurodegenerative disease. This study concludes that water sediments serve as the major source of pollution in the human body and pose significant health risks, thereby necessitating the implementation of effective preventive measures.
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Affiliation(s)
- Tianyu Dong
- Municipal Environmental Engineering College, Qingdao University of Technology, Qingdao, China
- Shanghai WLSA Academy, Shanghai, China
| | - Hanxuan Li
- Municipal Environmental Engineering College, Qingdao University of Technology, Qingdao, China
- Shanghai WLSA Academy, Shanghai, China
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11
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Wang Y, Zhang H, Ding F, Li J, Li L, Xu Z, Zhao Y. N-3 polyunsaturated fatty acids attenuate amyloid-beta-induced toxicity in AD transgenic Caenorhabditis elegans via promotion of proteasomal activity and activation of PPAR-gamma. J Nutr Biochem 2024; 127:109603. [PMID: 38373507 DOI: 10.1016/j.jnutbio.2024.109603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 01/31/2024] [Accepted: 02/15/2024] [Indexed: 02/21/2024]
Abstract
Alzheimer's disease (AD) is a common neurodegenerative disease that causes progressive cognitive decline. A major pathological characteristic of AD brain is the presence of senile plaques composed of β-amyloid (Aβ), the accumulation of which induces toxic cascades leading to synaptic dysfunction, neuronal apoptosis, and eventually cognitive decline. Dietary n-3 polyunsaturated fatty acids (PUFAs), such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), are beneficial for patients with early-stage AD; however, the mechanisms are not completely understood. In this study, we investigated the effects of n-3 PUFAs on Aβ-induced toxicity in a transgenic AD Caenorhabditis elegans (C. elegans) model. The results showed that EPA and DHA significantly inhibited Aβ-induced paralytic phenotype and decreased the production of reactive oxygen species while reducing the levels of Aβ in the AD worms. Further studies revealed that EPA and DHA might reduce the accumulation of Aβ by restoring the activity of proteasome. Moreover, treating worms with peroxisome proliferator-activated receptor (PPAR)-γ inhibitor GW9662 prevented the inhibitory effects of n-3 PUFAs on Aβ-induced paralytic phenotype and diminished the elevation of proteasomal activity by n-3 PUFAs, suggesting that PPARγ-mediated signals play important role in the protective effects of n-3 PUFAs against Aβ-induced toxicity.
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Affiliation(s)
- Yanqing Wang
- Department of Bioengineering, Harbin Institute of Technology, Weihai 264209, Shandong, China
| | - Huanying Zhang
- Department of Bioengineering, Harbin Institute of Technology, Weihai 264209, Shandong, China
| | - Feng Ding
- Department of Bioengineering, Harbin Institute of Technology, Weihai 264209, Shandong, China
| | - Jianhua Li
- Department of Bioengineering, Harbin Institute of Technology, Weihai 264209, Shandong, China
| | - Lianyu Li
- Department of Bioengineering, Harbin Institute of Technology, Weihai 264209, Shandong, China
| | - Zhong Xu
- Department of Bioengineering, Harbin Institute of Technology, Weihai 264209, Shandong, China.
| | - Yan Zhao
- Department of Bioengineering, Harbin Institute of Technology, Weihai 264209, Shandong, China.
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12
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Cheng WH, Quan Y, Thompson WF. The effect of dance on mental health and quality of life of people with Parkinson's disease: A systematic review and three-level meta-analysis. Arch Gerontol Geriatr 2024; 120:105326. [PMID: 38237379 DOI: 10.1016/j.archger.2024.105326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 01/04/2024] [Accepted: 01/07/2024] [Indexed: 03/10/2024]
Abstract
OBJECTIVES Parkinson's disease (PD) is a neurodegenerative disease that affects millions of individuals worldwide. Dance has emerged as a comprehensive intervention for enhancing well-being in this population. This meta-analysis aimed to assess the effectiveness of dance on mental health and quality of life among individuals with PD. METHODS Three databases were searched in December 2022. Research papers comparing the effects of dance with a non-dance control on the quality of life or mental health of individuals with PD were included. Two authors independently screened the studies, extracted data, and assessed methodological quality of eligible studies. To address the interdependence of effect sizes within studies, the three-level meta-analysis approach was employed to analyze the data. RESULTS Thirteen trials involving a total of 496 participants were included, with 11 being subjected to statistical analysis. The results indicated that dance had a positive impact on mental health (g = 0.43, 95 % CI = [0.11, 0.75]) and quality of life (g = 0.46, 95 % CI = [-0.04, 0.95]) when compared to passive control groups. Moderator analyses revealed that non-partnered dance and dance interventions with lower total dosages were particularly beneficial for mental health. CONCLUSION Dance interventions are an effective lifestyle activity for enhancing mental health and quality of life in individuals with PD. A theoretical framework is proposed to explain the impact of dance on well-being from neurological, social, physical, and psychological perspectives.
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Affiliation(s)
- Wei-Hsin Cheng
- Faculty of Society and Design, Bond University, Queensland 4229, Australia
| | - Yixue Quan
- School of Psychological Sciences, Macquarie University, Sydney 2109, Australia
| | - William Forde Thompson
- Faculty of Society and Design, Bond University, Queensland 4229, Australia; School of Psychological Sciences, Macquarie University, Sydney 2109, Australia.
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13
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Zhao J, Chen Z, Li L, Sun B. UHPLC-MS/MS analysis and protective effects on neurodegenerative diseases of phenolic compounds in different parts of Diospyros kaki L. cv. Mopan. Food Res Int 2024; 184:114251. [PMID: 38609229 DOI: 10.1016/j.foodres.2024.114251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 03/14/2024] [Accepted: 03/17/2024] [Indexed: 04/14/2024]
Abstract
Persimmon (Diospyros kaki L. cv. Mopan.), an important commercial crop belonging to the genus of Diospyros in the Ebenaceae family, is rich in bioactive phenolic compounds. In this study, the phenolic compounds from fruits, leaves, and calyces of persimmon were qualitatively and quantitatively determined by UPLC-Q-Exactive-Orbitrap/MS and UPLC-QqQ-MS/MS, respectively. Furthermore, the role of phenolic extract from different parts of persimmon on neuroprotective activity in vitro, through against oxidative stress and anti-neuroinflammation effect was firstly evaluated. The results showed that 75 phenolic compounds, and 3 other kinds of compounds were identified, among which 44 of phenolic compounds were quantified from different parts of persimmon. It is the first time that epicatechin-epigallocatechin, catechin-epigallocatechin, catechin-epigallocatechin (A-type), and glycoside derivatives of laricitrin were identified in persimmon extract. The dominated phenolic compounds in three parts of persimmon were significantly different. All phenolic extracts from each part of persimmon showed strong neuroprotective activities against H2O2-induced oxidative stress in PC-12 cells and LPS-induced BV2 cells. The fruit extract presented the strongest activity, followed by calyx and leaf extract. The systematic knowledge on the phytochemical composition along with activity evaluation of different parts of persimmon could contribute to their targeted selection and development.
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Affiliation(s)
- Jian Zhao
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Zhongling Chen
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Lingxi Li
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Baoshan Sun
- School of Functional Food and Wine, Shenyang Pharmaceutical University, Shenyang 110016, China; Pólo de Inovação de Dois Portos, Instituto Nacional de Investigação Agrária e Veterinária, I.P., Quinta da Almoinha, Dois Portos 2565-191, Portugal.
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14
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Oliveira NAS, Pinho BR, Pinto J, Guedes de Pinho P, Oliveira JMA. Edaravone counteracts redox and metabolic disruptions in an emerging zebrafish model of sporadic ALS. Free Radic Biol Med 2024; 217:126-140. [PMID: 38531462 DOI: 10.1016/j.freeradbiomed.2024.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 03/05/2024] [Accepted: 03/20/2024] [Indexed: 03/28/2024]
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease in which the death of motor neurons leads to loss of muscle function. Additionally, cognitive and circadian disruptions are common in ALS patients, contributing to disease progression and burden. Most ALS cases are sporadic, and environmental exposures contribute to their aetiology. However, animal models of these sporadic ALS cases are scarce. The small vertebrate zebrafish is a leading organism to model neurodegenerative diseases; previous studies have proposed bisphenol A (BPA) or β-methylamino-l-alanine (BMAA) exposure to model sporadic ALS in zebrafish, damaging motor neurons and altering motor responses. Here we characterise the face and predictive validity of sporadic ALS models, showing their potential for the mechanistic study of ALS drugs. We phenotypically characterise the BPA and BMAA-induced models, going beyond motor activity and motor axon morphology, to include circadian, redox, proteostasis, and metabolomic phenotypes, and assessing their predictive validity for ALS modelling. BPA or BMAA exposure induced concentration-dependent activity impairments. Also, exposure to BPA but not BMAA induced motor axonopathy and circadian alterations in zebrafish larvae. Our further study of the BPA model revealed loss of habituation to repetitive startles, increased oxidative damage, endoplasmic reticulum (ER) stress, and metabolome abnormalities. The BPA-induced model shows predictive validity, since the approved ALS drug edaravone counteracted BPA-induced motor phenotypes, ER stress, and metabolic disruptions. Overall, BPA exposure is a promising model of ALS-related redox and ER imbalances, contributing to fulfil an unmet need for validated sporadic ALS models.
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Affiliation(s)
- Nuno A S Oliveira
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, University of Porto, 4050-313, Porto, Portugal; UCIBIO - Applied Molecular Biosciences Unit, Mitochondria and Neurobiology Lab, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal
| | - Brígida R Pinho
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, University of Porto, 4050-313, Porto, Portugal; UCIBIO - Applied Molecular Biosciences Unit, Mitochondria and Neurobiology Lab, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal
| | - Joana Pinto
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, University of Porto, 4050-313, Porto, Portugal; UCIBIO - Applied Molecular Biosciences Unit, Faculty of Pharmacy, Laboratory of Toxicology, University of Porto, 4050-313, Porto, Portugal
| | - Paula Guedes de Pinho
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, University of Porto, 4050-313, Porto, Portugal; UCIBIO - Applied Molecular Biosciences Unit, Faculty of Pharmacy, Laboratory of Toxicology, University of Porto, 4050-313, Porto, Portugal
| | - Jorge M A Oliveira
- Associate Laboratory i4HB - Institute for Health and Bioeconomy, University of Porto, 4050-313, Porto, Portugal; UCIBIO - Applied Molecular Biosciences Unit, Mitochondria and Neurobiology Lab, Faculty of Pharmacy, University of Porto, 4050-313, Porto, Portugal.
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15
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Dos Santos HM, Bertollo AG, Mingoti MED, Grolli RE, Kreuz KM, Ignácio ZM. Dementia and depression: Biological connections with amyloid β protein. Basic Clin Pharmacol Toxicol 2024; 134:563-573. [PMID: 38459754 DOI: 10.1111/bcpt.13996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 02/12/2024] [Accepted: 02/13/2024] [Indexed: 03/10/2024]
Abstract
Dementia is an umbrella term for a broad group of age-associated neurodegenerative diseases. It is estimated that dementia affects 50 million people worldwide and that Alzheimer's disease (AD) is responsible for up to 75% of cases. Small extracellular senile plaques composed of filamentous aggregates of amyloid β (Aβ) protein tend to bind to neuronal receptors, affecting cholinergic, serotonergic, dopaminergic and noradrenergic neurotransmission, leading to neuroinflammation, among other pathophysiologic processes and subsequent neuronal death, followed by dementia. The amyloid cascade hypothesis points to a pathological process in the cleavage of the amyloid precursor protein (APP), resulting in pathological Aβ. There is a close relationship between the pathologies that lead to dementia and depression. It is estimated that depression is prevalent in up to 90% of individuals diagnosed with Parkinson's disease, with varying severity, and in 20 to 30% of cases of Alzheimer's disease. The hypothalamic pituitary adrenal (HPA) axis is the great intermediary between the pathophysiological mechanisms in neurodegenerative diseases and depression. This review discusses the role of Aβ protein in the pathophysiological mechanisms of dementia and depression, considering the HPA axis, neuroinflammation, oxidative stress, signalling pathways and neurotransmission.
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Affiliation(s)
- Helamã Moraes Dos Santos
- Laboratory of Physiology, Pharmacology and Psychopathology, Graduate Program in Biomedical Sciences, Federal University of Fronteira Sul, Chapecó, SC, Brazil
| | - Amanda Gollo Bertollo
- Laboratory of Physiology, Pharmacology and Psychopathology, Graduate Program in Biomedical Sciences, Federal University of Fronteira Sul, Chapecó, SC, Brazil
| | - Maiqueli Eduarda Dama Mingoti
- Laboratory of Physiology, Pharmacology and Psychopathology, Graduate Program in Biomedical Sciences, Federal University of Fronteira Sul, Chapecó, SC, Brazil
| | - Roberta Eduarda Grolli
- Laboratory for research into care, patient safety, and technological innovation in nursing and health, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Kelli Maria Kreuz
- Laboratory of Physiology, Pharmacology and Psychopathology, Graduate Program in Biomedical Sciences, Federal University of Fronteira Sul, Chapecó, SC, Brazil
| | - Zuleide Maria Ignácio
- Laboratory of Physiology, Pharmacology and Psychopathology, Graduate Program in Biomedical Sciences, Federal University of Fronteira Sul, Chapecó, SC, Brazil
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16
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Gopalan AB, van Uden L, Sprenger RR, Fernandez-Novel Marx N, Bogetofte H, Neveu PA, Meyer M, Noh KM, Diz-Muñoz A, Ejsing CS. Lipotype acquisition during neural development is not recapitulated in stem cell-derived neurons. Life Sci Alliance 2024; 7:e202402622. [PMID: 38418090 PMCID: PMC10902711 DOI: 10.26508/lsa.202402622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 03/01/2024] Open
Abstract
During development, different tissues acquire distinct lipotypes that are coupled to tissue function and homeostasis. In the brain, where complex membrane trafficking systems are required for neural function, specific glycerophospholipids, sphingolipids, and cholesterol are highly abundant, and defective lipid metabolism is associated with abnormal neural development and neurodegenerative disease. Notably, the production of specific lipotypes requires appropriate programming of the underlying lipid metabolic machinery during development, but when and how this occurs is unclear. To address this, we used high-resolution MSALL lipidomics to generate an extensive time-resolved resource of mouse brain development covering early embryonic and postnatal stages. This revealed a distinct bifurcation in the establishment of the neural lipotype, whereby the canonical lipid biomarkers 22:6-glycerophospholipids and 18:0-sphingolipids begin to be produced in utero, whereas cholesterol attains its characteristic high levels after birth. Using the resource as a reference, we next examined to which extent this can be recapitulated by commonly used protocols for in vitro neuronal differentiation of stem cells. Here, we found that the programming of the lipid metabolic machinery is incomplete and that stem cell-derived cells can only partially acquire a neural lipotype when the cell culture media is supplemented with brain-specific lipid precursors. Altogether, our work provides an extensive lipidomic resource for early mouse brain development and highlights a potential caveat when using stem cell-derived neuronal progenitors for mechanistic studies of lipid biochemistry, membrane biology and biophysics, which nonetheless can be mitigated by further optimizing in vitro differentiation protocols.
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Affiliation(s)
- Anusha B Gopalan
- https://ror.org/03mstc592 Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
- Faculty of Biosciences, Candidate for Joint PhD Degree Between EMBL and Heidelberg University, Heidelberg, Germany
| | - Lisa van Uden
- https://ror.org/03mstc592 Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Richard R Sprenger
- Department of Biochemistry and Molecular Biology, Villum Center for Bioanalytical Sciences, University of Southern Denmark, Odense, Denmark
| | | | - Helle Bogetofte
- Department of Biochemistry and Molecular Biology, Villum Center for Bioanalytical Sciences, University of Southern Denmark, Odense, Denmark
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Pierre A Neveu
- https://ror.org/03mstc592 Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Morten Meyer
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
- Department of Neurology, Odense University Hospital, Odense, Denmark
- BRIDGE, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Kyung-Min Noh
- https://ror.org/03mstc592 Genome Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Alba Diz-Muñoz
- https://ror.org/03mstc592 Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Christer S Ejsing
- https://ror.org/03mstc592 Cell Biology and Biophysics Unit, European Molecular Biology Laboratory, Heidelberg, Germany
- Department of Biochemistry and Molecular Biology, Villum Center for Bioanalytical Sciences, University of Southern Denmark, Odense, Denmark
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17
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Halliwell B, Cheah I. Are age-related neurodegenerative diseases caused by a lack of the diet-derived compound ergothioneine? Free Radic Biol Med 2024; 217:60-67. [PMID: 38492784 DOI: 10.1016/j.freeradbiomed.2024.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/05/2024] [Accepted: 03/13/2024] [Indexed: 03/18/2024]
Abstract
We propose that the diet-derived compound ergothioneine (ET) is an important nutrient in the human body, especially for maintenance of normal brain function, and that low body ET levels predispose humans to significantly increased risks of neurodegenerative (cognitive impairment, dementia, Parkinson's disease) and possibly other age-related diseases (including frailty, cardiovascular disease, and eye disease). Hence, restoring ET levels in the body could assist in mitigating these risks, which are rapidly increasing due to ageing populations globally. Prevention of neurodegeneration is especially important, since by the time dementia is usually diagnosed damage to the brain is extensive and likely irreversible. ET and vitamin E from the diet may act in parallel or even synergistically to protect different parts of the brain; both may be "neuroprotective vitamins". The present article reviews the substantial scientific basis supporting these proposals about the role of ET.
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Affiliation(s)
- Barry Halliwell
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Centre for Life Sciences, #05-01A, 28 Medical Drive, 117456, Singapore.
| | - Irwin Cheah
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Centre for Life Sciences, #05-01A, 28 Medical Drive, 117456, Singapore.
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18
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Hobin F, De Vocht J, Lamaire N, Beyens H, Ombelet F, Van Damme P. Specialized multidisciplinary care improves ALS survival in Belgium: a population-based retrospective study. Amyotroph Lateral Scler Frontotemporal Degener 2024; 25:282-289. [PMID: 38240367 DOI: 10.1080/21678421.2024.2304058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 01/03/2024] [Indexed: 01/24/2024]
Abstract
ALS is a neurodegenerative disease characterized by loss of motor neurons, resulting in progressive weakness and wasting of muscles. The average survival time is 2-5 years, mostly due to respiratory failure. Since current therapies can prolong survival time by only a few months, multidisciplinary care remains the cornerstone of the management of ALS. At the ALS Expert Centre of University Hospitals Leuven, a large proportion of Belgian ALS patients are seen for diagnosis and a significant number is also in follow-up with the multidisciplinary team. In this retrospective study, we compared the outcome of incident patients who were in follow-up at our site with patients who were not in follow-up. We included 659 patients of which 557 (84.5%) received specialized care at the ALS Expert Centre. After adjusting for clinically relevant prognostic parameters, multidisciplinary follow-up significantly prolonged survival (p = 0.004; HR = 0.683; CI 95% [0.528 - 0.884]). This increase in survival is mainly driven by patients with spinal onset (p = 0.035; HR = 0.746; CI 95% [0.568 - 0.980]), since no significant increased survival time was observed in patients with bulbar onset (p = 0.28; HR = 0.778; CI 95% [0.495 - 1.223]). These data confirm that multidisciplinary follow-up contributes to a better outcome of patients, emphasizing the importance of multidisciplinary specialized care in ALS.
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Affiliation(s)
- Frederik Hobin
- Neurology Department, University Hospitals Leuven, Leuven, Belgium
- Department of Neurosciences, Experimental Neurology, and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, Leuven, Belgium, and
- VIB, Centre for Brain & Disease Research, Laboratory of Neurobiology, Leuven, Belgium
| | - Joke De Vocht
- Neurology Department, University Hospitals Leuven, Leuven, Belgium
- Department of Neurosciences, Experimental Neurology, and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, Leuven, Belgium, and
- VIB, Centre for Brain & Disease Research, Laboratory of Neurobiology, Leuven, Belgium
| | - Nikita Lamaire
- Neurology Department, University Hospitals Leuven, Leuven, Belgium
| | - Hilde Beyens
- Neurology Department, University Hospitals Leuven, Leuven, Belgium
| | - Fouke Ombelet
- Neurology Department, University Hospitals Leuven, Leuven, Belgium
- Department of Neurosciences, Experimental Neurology, and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, Leuven, Belgium, and
- VIB, Centre for Brain & Disease Research, Laboratory of Neurobiology, Leuven, Belgium
| | - Philip Van Damme
- Neurology Department, University Hospitals Leuven, Leuven, Belgium
- Department of Neurosciences, Experimental Neurology, and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, Leuven, Belgium, and
- VIB, Centre for Brain & Disease Research, Laboratory of Neurobiology, Leuven, Belgium
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19
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Heikkinen AL, Tikkanen V, Hänninen T, Hublin C, Koivisto AM, Saari TT, Remes AM, Paajanen TI, Krüger J. Utility of the INECO Frontal Screening and the Frontal Assessment Battery in detecting executive dysfunction in early-onset cognitive impairment and dementia. J Int Neuropsychol Soc 2024; 30:339-349. [PMID: 37800312 DOI: 10.1017/s1355617723000619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
OBJECTIVE The INECO Frontal Screening (IFS) and the Frontal Assessment Battery (FAB) are executive dysfunction (ED) screening tools that can distinguish patients with neurodegenerative disorders from healthy controls and, to some extent, between dementia subtypes. This paper aims to examine the suitability of these tests in assessing early-onset cognitive impairment and dementia patients. METHOD In a memory clinic patient cohort (age mean = 57.4 years) with symptom onset at ≤65 years, we analyzed the IFS and the FAB results of four groups: early-onset dementia (EOD, n = 49), mild cognitive impairment due to neurological causes (MCI-n, n = 34), MCI due to other causes such as depression (MCI-o, n = 99) and subjective cognitive decline (SCD, n = 14). Data were gathered at baseline and at 6 and 12 months. We also studied the tests' accuracy in distinguishing EOD from SCD patients and ED patients from those with intact executive functioning. Correlations with neuropsychological measures were also studied. RESULTS The EOD group had significantly (p < .05) lower IFS and FAB total scores than the MCI-o and SCD groups. Compared with the FAB, the IFS showed more statistically significant (p < .05) differences between diagnostic groups, greater accuracy (IFS AUC = .80, FAB AUC = .75, p = .036) in detecting ED and marginally stronger correlations with neuropsychological measures. We found no statistically significant differences in the EOD group scores from baseline up to 6- or 12-months follow-up. CONCLUSIONS While both tests can detect EOD among memory clinic patients, the IFS may be more reliable in detecting ED than the FAB.
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Affiliation(s)
- Anna-Leena Heikkinen
- Research Unit of Clinical Medicine, Neurology, University of Oulu, Oulu, Finland
- MRC, Oulu University Hospital, Oulu, Finland
- Neurocenter, Neurology, Oulu University Hospital, Oulu, Finland
- Work Ability and Working Careers, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Veera Tikkanen
- Research Unit of Clinical Medicine, Neurology, University of Oulu, Oulu, Finland
- MRC, Oulu University Hospital, Oulu, Finland
- Neurocenter, Neurology, Oulu University Hospital, Oulu, Finland
| | - Tuomo Hänninen
- Neurocenter, Neurology, Kuopio University Hospital, Kuopio, Finland
| | - Christer Hublin
- Work Ability and Working Careers, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Anne M Koivisto
- Neurocenter, Neurology, Kuopio University Hospital, Kuopio, Finland
- Unit of Neurology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
- Department of Geriatrics, Helsinki University Hospital, Helsinki, Finland
- Clinical Neurosciences, University of Helsinki, Helsinki, Finland
| | - Toni T Saari
- Neurocenter, Neurology, Kuopio University Hospital, Kuopio, Finland
- Unit of Neurology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Anne M Remes
- Research Unit of Clinical Medicine, Neurology, University of Oulu, Oulu, Finland
- MRC, Oulu University Hospital, Oulu, Finland
- Neurocenter, Neurology, Oulu University Hospital, Oulu, Finland
- Clinical Neurosciences, University of Helsinki, Helsinki, Finland
| | - Teemu I Paajanen
- Work Ability and Working Careers, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Johanna Krüger
- Research Unit of Clinical Medicine, Neurology, University of Oulu, Oulu, Finland
- MRC, Oulu University Hospital, Oulu, Finland
- Neurocenter, Neurology, Oulu University Hospital, Oulu, Finland
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20
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Murdock BJ, Zhao B, Pawlowski KD, Famie JP, Piecuch CE, Webber-Davis IF, Teener SJ, Feldman EL, Zhao L, Goutman SA. Peripheral Immune Profiles Predict ALS Progression in an Age- and Sex-Dependent Manner. Neurol Neuroimmunol Neuroinflamm 2024; 11:e200241. [PMID: 38626361 DOI: 10.1212/nxi.0000000000200241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
BACKGROUND AND OBJECTIVES Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease whose pathobiology associates with peripheral blood immune cell levels and activation patterns in an age and sex-dependent manner. This study's objective was to identify immune profile associations with ALS progression, whether the associations are age and sex-specific, and whether immune profiles can predict a future disease course. METHODS Flow cytometry immune profiles (a combination of 22 peripheral blood immune markers) were generated for 241 participants with ALS and linked to ALS progression, using progression-free survival, which is a composite combining the revised ALS Functional Rating Scale and survival. Participants were first grouped by immune profiles using unsupervised hierarchical clustering, and clusters were associated with subsequent progression-free survival. Next, individual immune markers were associated with progression-free survival using least absolute shrinkage and selection operator-Cox regression. Analyses were stratified by age and sex to identify demographic-specific immune mechanisms. Finally, random forest determined the predictive power of immune profiles on ALS progression in the whole population and again stratified by age and sex. RESULTS Progression-free survival differed between clusters of participants with similar immune profiles, particularly reduced natural killer (NK)-cell activation associated with slower progression. Individual markers such as neutrophil levels and NK-cell NKp46 expression associated with faster ALS progression while overall NK-cell levels and NK-cell subpopulations associated with slower progression; the strength of these associations varied by age and sex. Adding these immune markers to prediction models dramatically increased short-term prediction compared with routine clinical prognostic variables alone, and the addition of NK-cell markers further improved the prediction accuracy in female participants. DISCUSSION Specific immune profiles likely contribute to ALS progression in an age and sex-dependent manner, and peripheral immune markers enhance the prediction of short-term clinical outcomes. These findings suggest a complex milieu of immune profiles associated with ALS progression, and more detailed immunophenotyping in ALS will facilitate personalized immunotherapeutics in ALS.
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Affiliation(s)
- Benjamin J Murdock
- From the Department of Neurology (B.J.M., K.D.P., J.P.F., C.E.P., I.F.W.-D., S.J.T., E.L.F., S.A.G.); and School of Public Health (B.Z., L.Z.), Biostatistics Department, University of Michigan, Ann Arbor
| | - Bangyao Zhao
- From the Department of Neurology (B.J.M., K.D.P., J.P.F., C.E.P., I.F.W.-D., S.J.T., E.L.F., S.A.G.); and School of Public Health (B.Z., L.Z.), Biostatistics Department, University of Michigan, Ann Arbor
| | - Kristen D Pawlowski
- From the Department of Neurology (B.J.M., K.D.P., J.P.F., C.E.P., I.F.W.-D., S.J.T., E.L.F., S.A.G.); and School of Public Health (B.Z., L.Z.), Biostatistics Department, University of Michigan, Ann Arbor
| | - Joshua P Famie
- From the Department of Neurology (B.J.M., K.D.P., J.P.F., C.E.P., I.F.W.-D., S.J.T., E.L.F., S.A.G.); and School of Public Health (B.Z., L.Z.), Biostatistics Department, University of Michigan, Ann Arbor
| | - Caroline E Piecuch
- From the Department of Neurology (B.J.M., K.D.P., J.P.F., C.E.P., I.F.W.-D., S.J.T., E.L.F., S.A.G.); and School of Public Health (B.Z., L.Z.), Biostatistics Department, University of Michigan, Ann Arbor
| | - Ian F Webber-Davis
- From the Department of Neurology (B.J.M., K.D.P., J.P.F., C.E.P., I.F.W.-D., S.J.T., E.L.F., S.A.G.); and School of Public Health (B.Z., L.Z.), Biostatistics Department, University of Michigan, Ann Arbor
| | - Samuel J Teener
- From the Department of Neurology (B.J.M., K.D.P., J.P.F., C.E.P., I.F.W.-D., S.J.T., E.L.F., S.A.G.); and School of Public Health (B.Z., L.Z.), Biostatistics Department, University of Michigan, Ann Arbor
| | - Eva L Feldman
- From the Department of Neurology (B.J.M., K.D.P., J.P.F., C.E.P., I.F.W.-D., S.J.T., E.L.F., S.A.G.); and School of Public Health (B.Z., L.Z.), Biostatistics Department, University of Michigan, Ann Arbor
| | - Lili Zhao
- From the Department of Neurology (B.J.M., K.D.P., J.P.F., C.E.P., I.F.W.-D., S.J.T., E.L.F., S.A.G.); and School of Public Health (B.Z., L.Z.), Biostatistics Department, University of Michigan, Ann Arbor
| | - Stephen A Goutman
- From the Department of Neurology (B.J.M., K.D.P., J.P.F., C.E.P., I.F.W.-D., S.J.T., E.L.F., S.A.G.); and School of Public Health (B.Z., L.Z.), Biostatistics Department, University of Michigan, Ann Arbor
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21
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Zhang TC, Lin YC, Sun NN, Liu S, Hu WZ, Zhao Y, Dong XH, He XP. Icariin, astragaloside a and puerarin mixture attenuates cognitive impairment in APP/PS1 mice via inhibition of ferroptosis-lipid peroxidation. Neurochem Int 2024; 175:105705. [PMID: 38412923 DOI: 10.1016/j.neuint.2024.105705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 02/18/2024] [Accepted: 02/23/2024] [Indexed: 02/29/2024]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease that seriously threatens the quality of life of the elderly. Its pathogenesis has not yet been fully elucidated. Ferroptosis, a cell death caused by excessive accumulation of iron-dependent lipid peroxides, has been implicated in the pathogenesis of AD. Uncontrolled lipid peroxidation is the core process of ferroptosis, and inhibiting lipid peroxidation of ferroptosis may be an important therapeutic target for AD. Based on previous studies, we mixed standards of icariin, astragaloside IV, and puerarin, named the standard mixture YHG, and investigated the effect of YHG on ferroptosis -lipid peroxidation in APP/PS1 mice. DFX, a ferroptosis inhibitor, was used as a control drug. In this study, APP/PS1 mice were used as an AD animal model, and behavioral experiments, iron level detection, Transmission electron microscopy (TEM) observation, lipid peroxidation level detection, antioxidant capacity detection, immunofluorescence, Western blot and real-time qPCR were performed. It was found that YHG could reduce body weight, significantly improve abnormal behaviors and the ultrastructure of hippocampal neurons in APP/PS1 mice. The results of biochemical tests showed that YHG reduced the contents of iron, malondialdehyde (MDA) and lipid peroxide (LPO) in brain tissue and serum, and increased the levels of superoxide dismutase (SOD) and reduced glutathione (GSH). Immunofluorescence, WesternBlot and real-time qPCR results showed that YHG could promote the expression of solute carrier family 7 member 11 (SLC7A11), solute carrier family 3 member 2 (SLC3A2) and glutathione peroxidase 4(GPX4). Inhibited the expression of long-chain acyllipid coenzyme a synthetase 4(ACSL4) and lysophosphatidyltransferase 3 (LPCAT3). This study suggests that the mechanism by which YHG improves cognitive dysfunction in APP/PS1 mice may be related to the inhibition of ferroptosis-lipid peroxidation.
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Affiliation(s)
- Tian-Ci Zhang
- Hebei University of Chinese Medicine, Hebei Key Laboratory of Chinese Medicine Research On Cardio-cerebrovasc, Hebei, Shijiazhuang, 050091, China
| | - Yi-Can Lin
- Hebei University of Chinese Medicine, Hebei Key Laboratory of Chinese Medicine Research On Cardio-cerebrovasc, Hebei, Shijiazhuang, 050091, China
| | - Ning-Ning Sun
- Hebei University of Chinese Medicine, Hebei Key Laboratory of Chinese Medicine Research On Cardio-cerebrovasc, Hebei, Shijiazhuang, 050091, China
| | - Shan Liu
- Hebei University of Chinese Medicine, Hebei Key Laboratory of Chinese Medicine Research On Cardio-cerebrovasc, Hebei, Shijiazhuang, 050091, China
| | - Wen-Zhu Hu
- Hebei University of Chinese Medicine, Hebei Key Laboratory of Chinese Medicine Research On Cardio-cerebrovasc, Hebei, Shijiazhuang, 050091, China
| | - Yan Zhao
- Hebei University of Chinese Medicine, Hebei Key Laboratory of Chinese Medicine Research On Cardio-cerebrovasc, Hebei, Shijiazhuang, 050091, China
| | - Xian-Hui Dong
- Hebei University of Chinese Medicine, Hebei Key Laboratory of Chinese Medicine Research On Cardio-cerebrovasc, Hebei, Shijiazhuang, 050091, China.
| | - Xiao-Ping He
- Hebei University of Chinese Medicine, Hebei Key Laboratory of Chinese Medicine Research On Cardio-cerebrovasc, Hebei, Shijiazhuang, 050091, China.
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22
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Wang P, Chen C, Shan M. Vincamine alleviates brain injury by attenuating neuroinflammation and oxidative damage in a mouse model of Parkinson's disease through the NF-κB and Nrf2/HO-1 signaling pathways. J Biochem Mol Toxicol 2024; 38:e23714. [PMID: 38629493 DOI: 10.1002/jbt.23714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/12/2024] [Accepted: 04/04/2024] [Indexed: 04/19/2024]
Abstract
Parkinson's disease (PD) is a neurodegenerative disease featured by progressive loss of nigrostriatal dopaminergic neurons, the etiology of which is associated with the existence of neuroinflammatory response and oxidative stress. Vincamine is an indole alkaloid that was reported to exhibit potent anti-inflammatory and antioxidant properties in many central and/or peripheral diseases. Nevertheless, the specific role of vincamine in PD development remains unknown. In our study, dopaminergic neuron loss was determined through immunohistochemistry staining and western blot analysis of tyrosine hydroxylase (TH) expression in the substantia nigra (SN) of PD mice. Reactive oxygen species (ROS) production and malondialdehyde (MDA), superoxide dismutase (SOD), and glutathione (GSH) levels were detected through DHE staining and commercially available kits to assess oxidative stress. Pro-inflammatory cytokine (TNF-α, IL-1β, and IL-6) levels in the SN were measured via RT-qPCR and western blot analysis. Microglial and astrocyte activation was examined through immunofluorescence staining of Iba-1 (microglia marker) and GFAP (astrocyte marker) in the SN. The regulation of vincamine on the NF-κB and Nrf2/HO-1 pathway was estimated through western blot analysis. Our results showed that vincamine treatment decreased TNF-α, IL-1β, and IL-6 mRNA and protein levels, reduced GFAP and Iba-1 expression, decreased ROS production and MDA level, and increased SOD activity and GSH level in the SN of PD mice. Mechanically, vincamine repressed the phosphorylation levels of p65, IKKβ, and IκBα but enhanced the protein levels of Nrf2 and HO-1 in PD mice. Collectively, vincamine plays a neuroprotective role in PD mouse models by alleviating neuroinflammation and oxidative damage via suppressing the NF-κB pathway and activating the Nrf2/HO-1 pathway.
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Affiliation(s)
- Pengjun Wang
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Chen Chen
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Min Shan
- Department of Neurology, Luohe Central Hospital, Luohe, Henan, China
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23
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Parra-Cantu C, Martinez-Thompson JM, Linch FB, Welch TL, Chou CZ, Pattinson AK, Staff NP, Neisen M. Radiologically Inserted Gastrostomy Tube Placement Guided by the Assessment and Primary Palliative Care Provided by an Amyotrophic Lateral Sclerosis Multidisciplinary Clinic: A Single-Arm Retrospective Clinical Study. Am J Hosp Palliat Care 2024; 41:516-526. [PMID: 37266922 DOI: 10.1177/10499091231180553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease with a median survival of about 3 years. An ALS multidisciplinary team can provide primary palliative care and improve outcomes and quality of life for patients. Feeding tube insertion may be considered for patients with significant weight loss, or respiratory insufficiency. While radiologically inserted gastrostomy (RIG) tube placement may be an option, further studies are required to determine its best timing and appropriateness. This study's objectives were to evaluate the feasibility and outcomes of RIG tube placement in ALS patients over a 90-day follow-up period through the assessment and primary palliative care provided by the multidisciplinary team. This retrospective study reviewed the placement of 16 or 18 French RIG-tube without intubation or endoscopy for 36 ALS patients at a single center between April 2019 and December 2021. Measures included ALS Functional Rating Scale-Revised (ALSFRS-R) scores to determine the ALS stage. Demographic, clinical, procedural, and follow-up data were reviewed. Results showed that the RIG tube placement had a low rate of minor adverse events (11%) and no major procedure-related adverse events. The mean ALSFRS-R score at the time of procedure in subjects who died within 90 days was lower than of those alive beyond 90 days (P = .04). This study found that RIG-tube placement is a safe and effective way to manage dysphagia in ALS patients and highlights the importance of educating members of the multidisciplinary clinic in palliative care principles to determine the appropriateness of RIG tube placement.
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Affiliation(s)
| | | | - Forrest B Linch
- Division of Vascular and Interventional Radiology, Mayo Clinic, Rochester, MN, USA
| | - Tasha L Welch
- Department of Anesthesiology, Mayo Clinic, Rochester, MN, USA
| | - Claudia Z Chou
- Division of Community Internal Medicine, Geriatrics, and Palliative Care, Mayo Clinic, Rochester, MN, USA
| | - Adele K Pattinson
- Division of Endocrinology, Diabetes, Metabolism and Nutrition, Mayo Clinic, Rochester, MN, USA
| | - Nathan P Staff
- Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | - Melissa Neisen
- Division of Vascular and Interventional Radiology, Mayo Clinic, Rochester, MN, USA
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24
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Muhanna M, Lund I, Bromberg M, Wicks P, Benatar M, Barnes B, Pierce K, Ratner D, Brown A, Bertorini T, Barkhaus P, Carter G, Mascias Cadavid J, McDermott C, Glass JD, Pattee G, Armon C, Bedlack R, Li X. ALSUntangled #73: Lion's Mane. Amyotroph Lateral Scler Frontotemporal Degener 2024; 25:420-423. [PMID: 38141002 DOI: 10.1080/21678421.2023.2296557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023]
Abstract
Lion's Mane (Hericium erinaceus) has historically been used as traditional medicine in Asia and Europe for its potential benefits in fighting infection and cancer. It has gained interest in the neurodegenerative disease field because of its mechanisms of action; these include anti-inflammation, neuroprotection, and promoting neurite growth demonstrated in various cell and animal models. A very small, double-blind, placebo-controlled trial in patients with mild cognitive impairment showed a temporary improvement in cognitive function; this finding has yet to be replicated. However, there have been no studies in ALS cell or animal models or in humans with ALS. Lion's Mane appears safe and inexpensive when consumed in powder or capsule, but one anaphylactic case was reported after a patient consumed fresh Lion's Mane mushroom. Currently, we do not have enough information to support the use of Lion's Mane for treating ALS. We support further research in ALS disease models and clinical trials to study its efficacy.
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Affiliation(s)
- Maya Muhanna
- Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Issac Lund
- Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Mark Bromberg
- Department of Neurology, University of Utah, Salt Lake City, UT, USA
| | | | - Michael Benatar
- Department of Neurology, University of Miami, Miami, FL, USA
| | - Benjamin Barnes
- Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Kaitlyn Pierce
- Neuroscience Center, University of North Carolina, Chapel Hill, NC, USA
| | | | - Andrew Brown
- Department of Neurology, University of Miami, Miami, FL, USA
| | - Tulio Bertorini
- Department of Neurology, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Paul Barkhaus
- Department of Neurology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Greg Carter
- Department of Rehabilitation, Elson S. Floyd College of Medicine, Washington State University, Spokane, WA, USA
| | | | - Christopher McDermott
- Sheffield Institute of Translational Neuroscience, University of Sheffield, Sheffield, UK
| | | | - Gary Pattee
- Department of Neurology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Carmel Armon
- Department of Neurology, Shamir Medical Center, Tzrifin, Israel, and
| | | | - Xiaoyan Li
- Department of Neurology, Duke University, Durham, NC, USA
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25
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Ma Y, Deng L, Du Z. Development and validation of an LC-MS/MS method for quantifying NAD + and related metabolites in mice sciatic nerves and its application to a nerve injury animal model. J Chromatogr A 2024; 1721:464821. [PMID: 38547681 DOI: 10.1016/j.chroma.2024.464821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/13/2024] [Accepted: 03/14/2024] [Indexed: 04/13/2024]
Abstract
Recent studies highlight the pivotal roles of Nicotinamide adenine dinucleotide (NAD+) and its metabolites in aging and neurodegeneration. Accurate quantification of NAD+ and its metabolite levels in cells or tissues is crucial for advancing biochemical research and interventions targeting aging and neurodegenerative diseases. This study presents an accurate, precise, and rapid LC-MS/MS method using a surrogate matrix to quantify endogenous substances NAD+, nicotinamide mononucleotide (NMN), nicotinamide (NAM), adenosine diphosphate ribose (ADPR), and cyclic adenosine diphosphate ribose (cADPR) concentrations in mice sciatic nerves. Considering the properties of the phosphate groups in the analytes, the column and mobile phase were systematically optimized. These five polar analytes exhibited excellent analytical performance and baseline separation within 5 min on an Atlantis Premier BEH C18 AX column, with methylene phosphonic acid as a mobile phase additive. Enhanced sensitivity addressed the challenges posed by the small sample size of mice sciatic nerve and low NMN and cADPR detection. The method was fully validated, with linear correlation coefficients exceeding 0.992, precision (%relative standard deviation, RSD) values within 8.8%, and accuracy values between 92.2% and 107.3%, suggesting good reproducibility. Analytical recoveries in spiked and diluted matrix ranged from 87.8% to 104.7%, indicating the suitability of water as a surrogate matrix. Application of the method to quantify NAD+ and its metabolite levels in normal and injured mice sciatic nerve identified cADPR as a sensitive biomarker in the nerve injury model. This method is anticipated to deepen our understanding of the connections between NAD+ and its metabolites in health and disease, potentially improving diagnoses of various neurological disorders and aiding drug development for aging and neurodegenerative diseases.
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Affiliation(s)
- Yongfen Ma
- College of Chemistry, Beijing Key Laboratory of Environmentally Harmful Chemical Analysis, Beijing University of Chemical Technology, Beijing 100029, China; DMPK Department, Sironax (Beijing) Co., Ltd, Beijing 102206, China
| | - Li Deng
- DMPK Department, Sironax (Beijing) Co., Ltd, Beijing 102206, China
| | - Zhenxia Du
- College of Chemistry, Beijing Key Laboratory of Environmentally Harmful Chemical Analysis, Beijing University of Chemical Technology, Beijing 100029, China.
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26
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Green K, MacIver CL, Ebden S, Rees DA, Peall KJ. Pearls & Oy-sters: AARS2 Leukodystrophy-Tremor and Tribulations. Neurology 2024; 102:e209296. [PMID: 38507676 DOI: 10.1212/wnl.0000000000209296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 01/31/2024] [Indexed: 03/22/2024] Open
Abstract
A 35-year-old woman with a progressive, bilateral upper limb tremor, personality change, behavioral disturbance, and primary ovarian insufficiency was found to have AARS2-related leukodystrophy. She had congenital nystagmus which evolved to head titubation by age 8 years and then developed an upper limb tremor in her mid-teens. These symptoms stabilized during her 20s, but soon after this presentation at age 35 years, neurologic and behavioral disturbances progressed rapidly over a 12-month period requiring transition to an assisted living facility with care support (4 visits/day) and assistance for all activities of daily living. MRI of the brain demonstrated confluent white matter changes predominantly involving the frontal lobes consistent with a leukodystrophy. All other investigations were unremarkable. Nongenetic causes of a leukodystrophy including sexually transmitted diseases and recreational drug use were excluded. Family history was negative for similar symptoms. Gene panel testing identified compound heterozygous pathogenic AARS2 mutations. This case highlights the importance of MRI brain imaging in progressive tremor syndromes, the utility of gene panels in simultaneous testing of multiple disorders with overlapping phenotypes, and the need for awareness of comorbid endocrinological disorders in many of the genetic leukodystrophies, whose identification may aid in clinical diagnosis.
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Affiliation(s)
- Katy Green
- From the Cardiff University Brain Research Imaging Centre (CUBRIC) (K.G., C.L.M.), Cardiff University; University Hospital of Wales (S.E.), Cardiff and Vale University Health Board; and Neuroscience and Mental Health Innovation Institute (D.A.R., K.J.P.), Cardiff University, United Kingdom
| | - Claire L MacIver
- From the Cardiff University Brain Research Imaging Centre (CUBRIC) (K.G., C.L.M.), Cardiff University; University Hospital of Wales (S.E.), Cardiff and Vale University Health Board; and Neuroscience and Mental Health Innovation Institute (D.A.R., K.J.P.), Cardiff University, United Kingdom
| | - Sian Ebden
- From the Cardiff University Brain Research Imaging Centre (CUBRIC) (K.G., C.L.M.), Cardiff University; University Hospital of Wales (S.E.), Cardiff and Vale University Health Board; and Neuroscience and Mental Health Innovation Institute (D.A.R., K.J.P.), Cardiff University, United Kingdom
| | - D A Rees
- From the Cardiff University Brain Research Imaging Centre (CUBRIC) (K.G., C.L.M.), Cardiff University; University Hospital of Wales (S.E.), Cardiff and Vale University Health Board; and Neuroscience and Mental Health Innovation Institute (D.A.R., K.J.P.), Cardiff University, United Kingdom
| | - Kathryn J Peall
- From the Cardiff University Brain Research Imaging Centre (CUBRIC) (K.G., C.L.M.), Cardiff University; University Hospital of Wales (S.E.), Cardiff and Vale University Health Board; and Neuroscience and Mental Health Innovation Institute (D.A.R., K.J.P.), Cardiff University, United Kingdom
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Jin MH, Feng L, Xiang HY, Sun HN, Han YH, Kwon T. Exploring the role of Prx II in mitigating endoplasmic reticulum stress and mitochondrial dysfunction in neurodegeneration. Cell Commun Signal 2024; 22:231. [PMID: 38637880 PMCID: PMC11025193 DOI: 10.1186/s12964-024-01613-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 04/11/2024] [Indexed: 04/20/2024] Open
Abstract
BACKGROUND Neurodegenerative diseases are increasingly recognized for their association with oxidative stress, which leads to progressive dysfunction and loss of neurons, manifesting in cognitive and motor impairments. This study aimed to elucidate the neuroprotective role of peroxiredoxin II (Prx II) in counteracting oxidative stress-induced mitochondrial damage, a key pathological feature of neurodegeneration. METHODS We investigated the impact of Prx II deficiency on endoplasmic reticulum stress and mitochondrial dysfunction using HT22 cell models with knocked down and overexpressed Prx II. We observed alcohol-treated HT22 cells using transmission electron microscopy and monitored changes in the length of mitochondria-associated endoplasmic reticulum membranes and their contact with endoplasmic reticulum mitochondria contact sites (EMCSs). Additionally, RNA sequencing and bioinformatic analysis were conducted to identify the role of Prx II in regulating mitochondrial transport and the formation of EMCSs. RESULTS Our results indicated that Prx II preserves mitochondrial integrity by facilitating the formation of EMCSs, which are essential for maintaining mitochondrial Ca2+ homeostasis and preventing mitochondria-dependent apoptosis. Further, we identified a novel regulatory axis involving Prx II, the transcription factor ATF3, and miR-181b-5p, which collectively modulate the expression of Armcx3, a protein implicated in mitochondrial transport. Our findings underscore the significance of Prx II in protecting neuronal cells from alcohol-induced oxidative damage and suggest that modulating the Prx II-ATF3-miR-181b-5p pathway may offer a promising therapeutic strategy against neurodegenerative diseases. CONCLUSIONS This study not only expands our understanding of the cytoprotective mechanisms of Prx II but also offers necessary data for developing targeted interventions to bolster mitochondrial resilience in neurodegenerative conditions.
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Affiliation(s)
- Mei-Hua Jin
- College of Life Science & Biotechnology Technology, Heilongjiang Bayi Agricultural University, 163319, Daqing, China
| | - Lin Feng
- College of Life Science & Biotechnology Technology, Heilongjiang Bayi Agricultural University, 163319, Daqing, China
| | - Hong-Yi Xiang
- College of Life Science & Biotechnology Technology, Heilongjiang Bayi Agricultural University, 163319, Daqing, China
| | - Hu-Nan Sun
- College of Life Science & Biotechnology Technology, Heilongjiang Bayi Agricultural University, 163319, Daqing, China
| | - Ying-Hao Han
- College of Life Science & Biotechnology Technology, Heilongjiang Bayi Agricultural University, 163319, Daqing, China.
| | - Taeho Kwon
- Primate Resources Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 351-33 Neongme-gil, Ibam-myeon, 56216, Jeongeup-si, Jeonbuk, Republic of Korea.
- Department of Applied Biological Engineering, KRIBB School of Biotechnology, National University of Science and Technology (UST), 34113, Daejeon, Republic of Korea.
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Chen S, Barritt JD, Cascella R, Bigi A, Cecchi C, Banchelli M, Gallo A, Jarvis JA, Chiti F, Dobson CM, Fusco G, De Simone A. Structure-Toxicity Relationship in Intermediate Fibrils from α-Synuclein Condensates. J Am Chem Soc 2024; 146:10537-10549. [PMID: 38567991 PMCID: PMC11027145 DOI: 10.1021/jacs.3c14703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 03/14/2024] [Accepted: 03/15/2024] [Indexed: 04/18/2024]
Abstract
The aberrant aggregation of α-synuclein (αS) into amyloid fibrils is associated with a range of highly debilitating neurodegenerative conditions, including Parkinson's disease. Although the structural properties of mature amyloids of αS are currently understood, the nature of transient protofilaments and fibrils that appear during αS aggregation remains elusive. Using solid-state nuclear magnetic resonance (ssNMR), cryogenic electron microscopy (cryo-EM), and biophysical methods, we here characterized intermediate amyloid fibrils of αS forming during the aggregation from liquid-like spherical condensates to mature amyloids adopting the structure of pathologically observed aggregates. These transient amyloid intermediates, which induce significant levels of cytotoxicity when incubated with neuronal cells, were found to be stabilized by a small core in an antiparallel β-sheet conformation, with a disordered N-terminal region of the protein remaining available to mediate membrane binding. In contrast, mature amyloids that subsequently appear during the aggregation showed different structural and biological properties, including low levels of cytotoxicity, a rearranged structured core embedding also the N-terminal region, and a reduced propensity to interact with the membrane. The characterization of these two fibrillar forms of αS, and the use of antibodies and designed mutants, enabled us to clarify the role of critical structural elements endowing intermediate amyloid species with the ability to interact with membranes and induce cytotoxicity.
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Affiliation(s)
- Serene
W. Chen
- Department
of Life Sciences, Imperial College London, London SW7 2AZ, U.K.
| | - Joseph D. Barritt
- Department
of Life Sciences, Imperial College London, London SW7 2AZ, U.K.
| | - Roberta Cascella
- Department
of Experimental and Clinical Biomedical Sciences, Section of Biochemistry, University of Florence, Florence 50134, Italy
| | - Alessandra Bigi
- Department
of Experimental and Clinical Biomedical Sciences, Section of Biochemistry, University of Florence, Florence 50134, Italy
| | - Cristina Cecchi
- Department
of Experimental and Clinical Biomedical Sciences, Section of Biochemistry, University of Florence, Florence 50134, Italy
| | - Martina Banchelli
- Institute
of Applied Physics “Nello Carrara” National Research
Council of Italy, Sesto Fiorentino, Florence 50019, Italy
| | - Angelo Gallo
- Department
of Chemistry, University of Turin, Turin 10124, Italy
| | - James A. Jarvis
- Department
of Life Sciences, Imperial College London, London SW7 2AZ, U.K.
- Randall
Centre for Cell and Molecular Biophysics and Centre for Biomolecular
Spectroscopy, King’s College London, London SE1 9RT, U.K.
| | - Fabrizio Chiti
- Department
of Experimental and Clinical Biomedical Sciences, Section of Biochemistry, University of Florence, Florence 50134, Italy
| | | | - Giuliana Fusco
- Department
of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K.
- Department
of Pharmacy, University of Naples, Naples 80131, Italy
| | - Alfonso De Simone
- Department
of Life Sciences, Imperial College London, London SW7 2AZ, U.K.
- Department
of Pharmacy, University of Naples, Naples 80131, Italy
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Liu J, Wu H, Robertson DH, Zhang J. Text mining and portal development for gene-specific publications on Alzheimer's disease and other neurodegenerative diseases. BMC Med Inform Decis Mak 2024; 24:98. [PMID: 38632621 PMCID: PMC11025191 DOI: 10.1186/s12911-024-02501-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 04/04/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Tremendous research efforts have been made in the Alzheimer's disease (AD) field to understand the disease etiology, progression and discover treatments for AD. Many mechanistic hypotheses, therapeutic targets and treatment strategies have been proposed in the last few decades. Reviewing previous work and staying current on this ever-growing body of AD publications is an essential yet difficult task for AD researchers. METHODS In this study, we designed and implemented a natural language processing (NLP) pipeline to extract gene-specific neurodegenerative disease (ND) -focused information from the PubMed database. The collected publication information was filtered and cleaned to construct AD-related gene-specific publication profiles. Six categories of AD-related information are extracted from the processed publication data: publication trend by year, dementia type occurrence, brain region occurrence, mouse model information, keywords occurrence, and co-occurring genes. A user-friendly web portal is then developed using Django framework to provide gene query functions and data visualizations for the generalized and summarized publication information. RESULTS By implementing the NLP pipeline, we extracted gene-specific ND-related publication information from the abstracts of the publications in the PubMed database. The results are summarized and visualized through an interactive web query portal. Multiple visualization windows display the ND publication trends, mouse models used, dementia types, involved brain regions, keywords to major AD-related biological processes, and co-occurring genes. Direct links to PubMed sites are provided for all recorded publications on the query result page of the web portal. CONCLUSION The resulting portal is a valuable tool and data source for quick querying and displaying AD publications tailored to users' interested research areas and gene targets, which is especially convenient for users without informatic mining skills. Our study will not only keep AD field researchers updated with the progress of AD research, assist them in conducting preliminary examinations efficiently, but also offers additional support for hypothesis generation and validation which will contribute significantly to the communication, dissemination, and progress of AD research.
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Affiliation(s)
- Jiannan Liu
- Department of BioHealth Informatics, Indiana University School of Informatics & Computing, Indianapolis, IN, 46202, USA
| | - Huanmei Wu
- Department of BioHealth Informatics, Indiana University School of Informatics & Computing, Indianapolis, IN, 46202, USA
- Health Services Administration & Policy, Temple University College of Public Health, Philadelphia, PA, 19122, USA
| | - Daniel H Robertson
- Integrated Data Sciences, Indiana Biosciences Research Institute, Indianapolis, IN, 46202, USA
| | - Jie Zhang
- Dept of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, 46202, USA.
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Dai T, Lou J, Kong D, Li J, Ren Q, Chen Y, Sun S, Yun Y, Sun X, Yang Y, Shao K, Li W, Zhao Y, Meng X, Yan C, Lin P, Liu S. Choroid plexus enlargement in amyotrophic lateral sclerosis patients and its correlation with clinical disability and blood-CSF barrier permeability. Fluids Barriers CNS 2024; 21:36. [PMID: 38632611 PMCID: PMC11025206 DOI: 10.1186/s12987-024-00536-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 04/02/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Using in vivo neuroimaging techniques, growing evidence has demonstrated that the choroid plexus (CP) volume is enlarged in patients with several neurodegenerative diseases, including Alzheimer's disease and Parkinson's disease. However, although animal and postmortem findings suggest that CP abnormalities are likely important pathological mechanisms underlying amyotrophic lateral sclerosis (ALS), the third most common neurodegenerative disease, no available study has been conducted to thoroughly assess CP abnormalities and their clinical relevance in vivo in ALS patients to date. Thus, we aimed to determine whether in vivo CP enlargement may occur in ALS patients. We also aimed to identify the relationships of CP volume with clinical disabilities and blood-CSF barrier (BCSFB) permeability in ALS patients. METHODS In this retrospective study, based on structural MRI data, CP volume was assessed using a Gaussian mixture model and underwent further manual correction in 155 ALS patients and 105 age- and sex-matched HCs from October 2021 to April 2023. The ALS Functional Rating Scale-Revised (ALSFRS-R) was used to assess clinical disability. The CSF/serum albumin quotient (Qalb) was used to assess BCSFB permeability. Moreover, all the ALS patients completed genetic testing, and according to genetic testing, the ALS patients were further divided into genetic ALS subgroup and sporadic ALS subgroup. RESULTS We found that compared with HCs, ALS patients had a significantly higher CP volume (p < 0.001). Moreover, compared with HCs, CP volume was significantly increased in both ALS patients with and without known genetic mutations after family-wise error correction (p = 0.006 and p < 0.001, respectively), while there were no significant differences between the two ALS groups. Furthermore, the CP volume was significantly correlated with the ALSFRS-r score (r = -0.226; p = 0.005) and the Qalb (r = 0.479; p < 0.001) in ALS patients. CONCLUSION Our study first demonstrates CP enlargement in vivo in ALS patients, and continues to suggest an important pathogenetic role for CP abnormalities in ALS. Moreover, assessing CP volume is likely a noninvasive and easy-to-implement approach for screening BCSFB dysfunction in ALS patients.
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Affiliation(s)
- Tingjun Dai
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Qilu Hospital, Shandong University, West Wenhua Street No.107, 250012, Jinan, China
| | - Jianwei Lou
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Qilu Hospital, Shandong University, West Wenhua Street No.107, 250012, Jinan, China
| | - Deyuan Kong
- School of Clinical Medicine, Shandong Second Medical University, Weifang, China
| | - Jinyu Li
- Department of Neurology, Xiamen Branch, Zhongshan Hospital, Fudan University, 361015, Xiamen, China
| | - Qingguo Ren
- Department of Radiology, Cheeloo College of Medicine, Qilu Hospital (Qingdao), Shandong University, Qingdao, China
| | - Yujing Chen
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Qilu Hospital, Shandong University, West Wenhua Street No.107, 250012, Jinan, China
| | - Sujuan Sun
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Qilu Hospital, Shandong University, West Wenhua Street No.107, 250012, Jinan, China
| | - Yan Yun
- Department of Radiology, Cheeloo College of Medicine, Qilu Hospital, Shandong University, Jinan, China
| | - Xiaohan Sun
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Qilu Hospital, Shandong University, West Wenhua Street No.107, 250012, Jinan, China
| | - Yiru Yang
- School of Nursing and Rehabilitation, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Kai Shao
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Qilu Hospital, Shandong University, West Wenhua Street No.107, 250012, Jinan, China
- Department of Clinical Laboratory, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, China
| | - Wei Li
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Qilu Hospital, Shandong University, West Wenhua Street No.107, 250012, Jinan, China
| | - Yuying Zhao
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Qilu Hospital, Shandong University, West Wenhua Street No.107, 250012, Jinan, China
| | - Xiangshui Meng
- Department of Radiology, Cheeloo College of Medicine, Qilu Hospital (Qingdao), Shandong University, Qingdao, China
| | - Chuanzhu Yan
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Qilu Hospital, Shandong University, West Wenhua Street No.107, 250012, Jinan, China
- Department of Clinical Laboratory, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, China
| | - Pengfei Lin
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Qilu Hospital, Shandong University, West Wenhua Street No.107, 250012, Jinan, China.
| | - Shuangwu Liu
- Research Institute of Neuromuscular and Neurodegenerative Disease, Department of Neurology, Qilu Hospital, Shandong University, West Wenhua Street No.107, 250012, Jinan, China.
- School of Nursing and Rehabilitation, Cheeloo College of Medicine, Shandong University, Jinan, China.
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Sawant R, Paret K, Petrillo J, Koenig A, Wolowacz S, Ronquest N, Rickards H. Health state utility estimates for value assessments of novel treatments in Huntington's disease: a systematic literature review. Health Qual Life Outcomes 2024; 22:33. [PMID: 38627749 PMCID: PMC11020898 DOI: 10.1186/s12955-024-02242-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 03/18/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Huntington's disease (HD) is a progressive neurodegenerative disease with a devastating impact on patients and their families. Quantifying how treatments affect patient outcomes is critical for informing reimbursement decisions. Many countries mandate a formal value assessment in which the treatment benefit is measured as quality-adjusted life-years, calculated with the use of utility estimates that reflect respondents' preferences for health states. OBJECTIVE To summarize published health state utility data in HD and identify gaps and uncertainties in the data available that could be used to inform value assessments. METHODS We conducted a systematic literature review of studies that used preference-based instruments (e.g., EQ-5D and SF-6D) to estimate utility values for people with HD. The studies were published between January 2012 and December 2022. RESULTS Of 383 articles screened, 16 articles reported utility values estimated in 11 distinct studies. The utility measure most frequently reported was EQ-5D (9/11 studies). Two studies reported SF-6D data; one used time trade-off methods to value health state descriptions (vignettes). Although utility scores generally worsened to a lower value with increased HD severity, the estimates varied considerably across studies. The EQ-5D index range was 0.89 - 0.72 for mild/prodromal HD and 0.71 - 0.37 for severe/late-stage disease. CONCLUSIONS This study uncovered high variability in published utility estimates, indicating substantial uncertainty in existing data. Further research is needed to better understand preferences and valuation across all stages and domains of HD symptoms and the degree to which generic utility measures capture the impact of cognitive changes on quality of life.
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Affiliation(s)
- Ruta Sawant
- Sage Therapeutics, Inc, 215 First Street, Cambridge, MA, 02142, USA.
| | - Kyle Paret
- Health Economics, RTI Health Solutions, 3040 East Cornwallis Road, Research Triangle Park, Research Triangle Park, NC, USA
| | | | - Aaron Koenig
- Sage Therapeutics, Inc, 215 First Street, Cambridge, MA, 02142, USA
| | - Sorrel Wolowacz
- Health Economics, RTI Health Solutions, The Pavilion, Towers Business Park, Wilmslow Road, Didsbury, Manchester, UK
| | - Naoko Ronquest
- Health Economics, RTI Health Solutions, 3040 East Cornwallis Road, Research Triangle Park, Research Triangle Park, NC, USA
| | - Hugh Rickards
- Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, 32-34 Colmore Circus Queensway, Birmingham, UK
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Chen CYA, Chiu CC, Huang CY, Cheng YC, Huang MC, Kuo PH, Chen WY. Cluster analysis dissecting cognitive deficits in older adults with major depressive disorder and the association with neurofilament light chain. BMC Geriatr 2024; 24:344. [PMID: 38627748 PMCID: PMC11020442 DOI: 10.1186/s12877-024-04960-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 04/09/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND Cognitive impairment is a growing problem with increasing burden in global aging. Older adults with major depressive disorder (MDD) have higher risk of dementia. Neurofilament light chain (NfL) has been proven as a potential biomarker in neurodegenerative disease, including dementia. We aimed to investigate the association between cognitive deficits and NfL levels in older adults with MDD. METHODS In this cross-sectional study, we enrolled 39 MDD patients and 15 individuals with mild neurocognitive disorder or major neurocognitive disorder, Alzheimer's type, as controls, from a tertiary psychiatric hospital. Both groups were over age 65 and with matched Mini-Mental State Examination (MMSE) score. Demographic data, clinical variables, and plasma NfL levels were obtained. We used cluster analysis according to their cognitive profile and estimated the correlation between plasma NfL levels and each cognitive domain. RESULTS In the MDD group, participants had higher rate of family psychiatry history and current alcohol use habit compared with controls. Control group of neurocognitive disorders showed significantly lower score in total MMSE and higher plasma NfL levels. Part of the MDD patients presented cognitive deficits clustered with that of neurocognitive disorders (cluster A). In cluster A, the total MMSE score (r=-0.58277, p=0.0287) and the comprehension domain (r=-0.71717, p=0.0039) were negatively correlated to NfL levels after adjusting for age, while the associations had not been observed in the other cluster. CONCLUSIONS We noted the negative correlation between NfL levels and cognition in MDD patients clustered with neurodegenerative disorder, Alzheimer's type. NfL could be a promising candidate as a biomarker to predict subtype of patients in MDD to develop cognitive decline. Further longitudinal studies and within MDD cluster analysis are required to validate our findings for clinical implications.
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Affiliation(s)
- Cynthia Yi-An Chen
- Department of Psychiatry, Wan-Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Chih-Chiang Chiu
- Department of Psychiatry, Taipei City Psychiatric Center, Songde branch, Taipei City Hospital, Taipei, Taiwan
- Department of Psychiatry, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Cho-Yin Huang
- Department of Psychiatry, Taipei City Psychiatric Center, Songde branch, Taipei City Hospital, Taipei, Taiwan
| | - Ying-Chih Cheng
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
- Department of Psychiatry, China Medical University Hsinchu Hospital, China Medical University, Hsinchu, Taiwan
| | - Ming-Chyi Huang
- Department of Psychiatry, Taipei City Psychiatric Center, Songde branch, Taipei City Hospital, Taipei, Taiwan
- Department of Psychiatry, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Po-Hsiu Kuo
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
- Department of Public Health, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Wen-Yin Chen
- Department of Psychiatry, Taipei City Psychiatric Center, Songde branch, Taipei City Hospital, Taipei, Taiwan.
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan.
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei, Taiwan.
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Makey DM, Gadkari VV, Kennedy RT, Ruotolo BT. Cyclic Ion Mobility-Mass Spectrometry and Tandem Collision Induced Unfolding for Quantification of Elusive Protein Biomarkers. Anal Chem 2024; 96:6021-6029. [PMID: 38557001 DOI: 10.1021/acs.analchem.4c00477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Sensitive analytical techniques that are capable of detecting and quantifying disease-associated biomolecules are indispensable in our efforts to understand disease mechanisms and guide therapeutic intervention through early detection, accurate diagnosis, and effective monitoring of disease. Parkinson's Disease (PD), for example, is one of the most prominent neurodegenerative disorders in the world, but the diagnosis of PD has primarily been based on the observation of clinical symptoms. The protein α-synuclein (α-syn) has emerged as a promising biomarker candidate for PD, but a lack of analytical methods to measure complex disease-associated variants of α-syn has prevented its widespread use as a biomarker. Antibody-based methods such as immunoassays and mass spectrometry-based approaches have been used to measure a limited number of α-syn forms; however, these methods fail to differentiate variants of α-syn that display subtle differences in only the sequence and structure. In this work, we developed a cyclic ion mobility-mass spectrometry method that combines multiple stages of activation and timed ion selection to quantify α-syn variants using both mass- and structure-based measurements. This method can allow for the quantification of several α-syn variants present at physiological levels in biological fluid. Taken together, this approach can be used to galvanize future efforts aimed at understanding the underlying mechanisms of PD and serves as a starting point for the development of future protein-structure-based diagnostics and therapeutic interventions.
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Affiliation(s)
- Devin M Makey
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Varun V Gadkari
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Robert T Kennedy
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Pharmacology, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Brandon T Ruotolo
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
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Anjum R, Raza C, Faheem M, Ullah A, Chaudhry M. Neuroprotective potential of Mentha piperita extract prevents motor dysfunctions in mouse model of Parkinson's disease through anti-oxidant capacities. PLoS One 2024; 19:e0302102. [PMID: 38625964 PMCID: PMC11020615 DOI: 10.1371/journal.pone.0302102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 03/26/2024] [Indexed: 04/18/2024] Open
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disease in the world. Neurodegeneration of the substantia nigra (SN) and diminished release of dopamine are prominent causes of this progressive disease. The current study aims to evaluate the protective potential of ethanolic extract of Mentha piperita (EthMP) against rotenone-mediated PD features, dopaminergic neuronal degeneration, oxidative stress and neuronal survival in a mouse model. Swiss albino male mice were assigned to five groups: control (2.5% DMSO vehicle), PD (rotenone 2.5 mg/kg), EthMP and rotenone (200mg/kg and 2.5mg/kg, respectively), EthMP (200 mg/kg), and Sinemet, reference treatment containing levodopa and carbidopa (20 mg/kg and rotenone 2.5mg/kg). Behavioral tests for motor functional deficit analysis were performed. Anti-oxidant capacity was estimated using standard antioxidant markers. Histopathology of the mid-brain for neurodegeneration estimation was performed. HPLC based dopamine level analysis and modulation of gene expression using quantitative real-time polymerase chain reaction was performed for the selected genes. EthMP administration significantly prevented the rotenone-mediated motor dysfunctions compared to PD group as assessed through open field, beam walk, pole climb down, stepping, tail suspension, and stride length tests. EthMP administration modulated the lipid peroxidation (LPO), reduced glutathione (GSH), and superoxide dismutase (SOD) levels, as well as glutathione-s-transferase (GST) and catalase (CAT) activities in mouse brain. EthMP extract prevented neurodegeneration in the SN of mice and partially maintained dopamine levels. The expression of genes related to dopamine, anti-oxidant potential and synapses were modulated in M. piperita (MP) extract treated mice brains. Current data suggest therapeutic capacities of MP extract and neuroprotective capacities, possibly through antioxidant capacities. Therefore, it may have potential clinical applications for PD management.
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Affiliation(s)
- Rabia Anjum
- Laboratory of Neurobehavioral Biology, Department of Zoology, Government College University Lahore, Punjab, Pakistan
| | - Chand Raza
- Laboratory of Neurobehavioral Biology, Department of Zoology, Government College University Lahore, Punjab, Pakistan
| | - Mehwish Faheem
- Laboratory of Neurobehavioral Biology, Department of Zoology, Government College University Lahore, Punjab, Pakistan
| | - Arif Ullah
- Laboratory of Neurobehavioral Biology, Department of Zoology, Government College University Lahore, Punjab, Pakistan
| | - Maham Chaudhry
- Laboratory of Neurobehavioral Biology, Department of Zoology, Government College University Lahore, Punjab, Pakistan
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Fogel A, Olcer M, Goel A, Feng X, Reder AT. Novel biomarkers and interferon signature in secondary progressive multiple sclerosis. J Neuroimmunol 2024; 389:578328. [PMID: 38471284 DOI: 10.1016/j.jneuroim.2024.578328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/29/2024] [Accepted: 03/05/2024] [Indexed: 03/14/2024]
Abstract
Multiple sclerosis (MS) exhibits poor immune regulation and subnormal interferon (IFN-β) signaling. Secondary Progressive MS displays waning exacerbations, relentless neurodegeneration, and diminished benefit of therapy. We find dysregulated serum protein balance (Th1/Th2) and excessive gene expression in Relapsing-Remitting MS vs. healthy controls (8700 differentially-expressed genes, DEG) and intermediate levels in SPMS (3900 DEG). Olfactory receptor genes (chemosensing), and WNT/ß-catenin (anti-inflammatory, repair) and metallothionein (anti-oxidant) gene pathways, have less expression in SPMS than RRMS. IFN-β treatment decreased pro-inflammatory and increased metallothionein gene expression in SPMS. These gene expression biomarkers suggest new targets for immune regulation and brain repair in this neurodegenerative disease.
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Affiliation(s)
- Avital Fogel
- Department of Neurology, University of Chicago, Chicago, IL 60637, USA
| | - Maya Olcer
- Department of Neurology, University of Chicago, Chicago, IL 60637, USA
| | - Aika Goel
- Department of Neurology, University of Chicago, Chicago, IL 60637, USA
| | - Xuan Feng
- Department of Neurology, University of Chicago, Chicago, IL 60637, USA.
| | - Anthony T Reder
- Department of Neurology, University of Chicago, Chicago, IL 60637, USA.
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Miyaue N, Ochi C, Ito YH, Ando R, Sone J, Nagai M. Blepharoptosis As an Early Manifestation of Neuronal Intranuclear Inclusion Disease. Intern Med 2024; 63:1163-1166. [PMID: 38616117 DOI: 10.2169/internalmedicine.2384-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/16/2024] Open
Abstract
Neuronal intranuclear inclusion disease (NIID) exhibits diverse clinical manifestations. Our patient was a 64-year-old woman with bilateral ptosis as the chief complaint. She had bilateral miosis, and the pupil was only slightly dilated 60 min after 1% phenylephrine administration, suggesting autonomic dysfunction secondary to preganglionic sympathetic impairment. A head-up tilt test revealed asymptomatic orthostatic hypotension. She was diagnosed with NIID based on a skin biopsy and genetic testing. This study suggests that blepharoptosis is an early manifestation of NIID. Furthermore, patients with suspected NIID should be examined carefully for autonomic dysfunction.
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Affiliation(s)
- Noriyuki Miyaue
- Department of Clinical Pharmacology and Therapeutics, Ehime University Graduate School of Medicine, Japan
| | - Chikako Ochi
- Department of Clinical Pharmacology and Therapeutics, Ehime University Graduate School of Medicine, Japan
| | - Yuko H Ito
- Department of Clinical Pharmacology and Therapeutics, Ehime University Graduate School of Medicine, Japan
| | - Rina Ando
- Department of Clinical Pharmacology and Therapeutics, Ehime University Graduate School of Medicine, Japan
| | - Jun Sone
- Department of Neuropathology, Institute for Medical Science of Aging, Aichi Medical University, Japan
| | - Masahiro Nagai
- Department of Clinical Pharmacology and Therapeutics, Ehime University Graduate School of Medicine, Japan
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Wang Y, Brahma MM, Takahashi K, Hernandez ANB, Ichikawa K, Minami S, Goshima Y, Harada T, Ohshima T. Drug Treatment Attenuates Retinal Ganglion Cell Death by Inhibiting Collapsin Response Mediator Protein 2 Phosphorylation in Mouse Models of Normal Tension Glaucoma. Neuromolecular Med 2024; 26:13. [PMID: 38619671 PMCID: PMC11018674 DOI: 10.1007/s12017-024-08778-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 03/01/2024] [Indexed: 04/16/2024]
Abstract
Normal tension glaucoma (NTG) is a progressive neurodegenerative disease in glaucoma families. Typical glaucoma develops because of increased intraocular pressure (IOP), whereas NTG develops despite normal IOP. As a subtype of open-angle glaucoma, NTG is characterized by retinal ganglion cell (RGC) degeneration, gradual loss of axons, and injury to the optic nerve. The relationship between glutamate excitotoxicity and oxidative stress has elicited great interest in NTG studies. We recently reported that suppressing collapsin response mediator protein 2 (CRMP2) phosphorylation in S522A CRMP2 mutant (CRMP2 KIKI) mice inhibited RGC death in NTG mouse models. This study evaluated the impact of the natural compounds huperzine A (HupA) and naringenin (NAR), which have therapeutic effects against glutamate excitotoxicity and oxidative stress, on inhibiting CMRP2 phosphorylation in mice intravitreally injected with N-methyl-D-aspartate (NMDA) and GLAST mutant mice. Results of the study demonstrated that HupA and NAR significantly reduced RGC degeneration and thinning of the inner retinal layer, and inhibited the elevated CRMP2 phosphorylation. These treatments protected against glutamate excitotoxicity and suppressed oxidative stress, which could provide insight into developing new effective therapeutic strategies for NTG.
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Affiliation(s)
- Yuebing Wang
- Department of Life Science and Medical Bioscience, Waseda University, Shinjuku-ku, Tokyo, 162-8480, Japan
| | - Musukha Mala Brahma
- Department of Life Science and Medical Bioscience, Waseda University, Shinjuku-ku, Tokyo, 162-8480, Japan
| | - Kazuya Takahashi
- Department of Life Science and Medical Bioscience, Waseda University, Shinjuku-ku, Tokyo, 162-8480, Japan
| | | | - Koki Ichikawa
- Department of Life Science and Medical Bioscience, Waseda University, Shinjuku-ku, Tokyo, 162-8480, Japan
| | - Syuntaro Minami
- Nara Medical University, Kashihara City, Nara, 634-8521, Japan
| | - Yoshio Goshima
- Department of Molecular Pharmacology and Neurobiology, Yokohama City University Graduate School of Medicine, Yokohama, 236-0004, Japan
| | - Takayuki Harada
- Visual Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, 156-8506, Japan
| | - Toshio Ohshima
- Laboratory for Molecular Brain Science, Department of Life Science and Medical Bioscience, Waseda University, 2-2 Wakamatsu-cho, Shinjuku-ku, Tokyo, 162-8480, Japan.
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Haq I, Ngo JC, Roy N, Pan RL, Nawsheen N, Chiu R, Zhang Y, Fujita M, Soni RK, Wu X, Bennett DA, Menon V, Olah M, Sher F. An integrated toolkit for human microglia functional genomics. Stem Cell Res Ther 2024; 15:104. [PMID: 38600587 PMCID: PMC11005142 DOI: 10.1186/s13287-024-03700-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 03/19/2024] [Indexed: 04/12/2024] Open
Abstract
BACKGROUND Microglia, the brain's resident immune cells, play vital roles in brain development, and disorders like Alzheimer's disease (AD). Human iPSC-derived microglia (iMG) provide a promising model to study these processes. However, existing iMG generation protocols face challenges, such as prolonged differentiation time, lack of detailed characterization, and limited gene function investigation via CRISPR-Cas9. METHODS Our integrated toolkit for in-vitro microglia functional genomics optimizes iPSC differentiation into iMG through a streamlined two-step, 20-day process, producing iMG with a normal karyotype. We confirmed the iMG's authenticity and quality through single-cell RNA sequencing, chromatin accessibility profiles (ATAC-Seq), proteomics and functional tests. The toolkit also incorporates a drug-dependent CRISPR-ON/OFF system for temporally controlled gene expression. Further, we facilitate the use of multi-omic data by providing online searchable platform that compares new iMG profiles to human primary microglia: https://sherlab.shinyapps.io/IPSC-derived-Microglia/ . RESULTS Our method generates iMG that closely align with human primary microglia in terms of transcriptomic, proteomic, and chromatin accessibility profiles. Functionally, these iMG exhibit Ca2 + transients, cytokine driven migration, immune responses to inflammatory signals, and active phagocytosis of CNS related substrates including synaptosomes, amyloid beta and myelin. Significantly, the toolkit facilitates repeated iMG harvesting, essential for large-scale experiments like CRISPR-Cas9 screens. The standalone ATAC-Seq profiles of our iMG closely resemble primary microglia, positioning them as ideal tools to study AD-associated single nucleotide variants (SNV) especially in the genome regulatory regions. CONCLUSIONS Our advanced two-step protocol rapidly and efficiently produces authentic iMG. With features like the CRISPR-ON/OFF system and a comprehensive multi-omic data platform, our toolkit equips researchers for robust microglial functional genomic studies. By facilitating detailed SNV investigation and offering a sustainable cell harvest mechanism, the toolkit heralds significant progress in neurodegenerative disease drug research and therapeutic advancement.
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Affiliation(s)
- Imdadul Haq
- Center for Translational and Computational Neuroimmunology, Columbia University Medical Center, New York, NY, USA
- Taub Institute for Research on Alzheimer's Disease and Aging Brain, Columbia University Medical Center, New York, NY, USA
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Jason C Ngo
- Center for Translational and Computational Neuroimmunology, Columbia University Medical Center, New York, NY, USA
- Taub Institute for Research on Alzheimer's Disease and Aging Brain, Columbia University Medical Center, New York, NY, USA
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Nainika Roy
- Center for Translational and Computational Neuroimmunology, Columbia University Medical Center, New York, NY, USA
- Taub Institute for Research on Alzheimer's Disease and Aging Brain, Columbia University Medical Center, New York, NY, USA
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Richard L Pan
- Center for Translational and Computational Neuroimmunology, Columbia University Medical Center, New York, NY, USA
- Taub Institute for Research on Alzheimer's Disease and Aging Brain, Columbia University Medical Center, New York, NY, USA
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
- Department of Physiology and Cellular Biophysics, Columbia University Medical Center, New York, NY, USA
| | - Nadiya Nawsheen
- Center for Translational and Computational Neuroimmunology, Columbia University Medical Center, New York, NY, USA
- Taub Institute for Research on Alzheimer's Disease and Aging Brain, Columbia University Medical Center, New York, NY, USA
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Rebecca Chiu
- Center for Translational and Computational Neuroimmunology, Columbia University Medical Center, New York, NY, USA
- Taub Institute for Research on Alzheimer's Disease and Aging Brain, Columbia University Medical Center, New York, NY, USA
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
- Neuroimmunology Core, Center for Translational & Computational Neuroimmunology, Division of Neuroimmunology, Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Ya Zhang
- Center for Translational and Computational Neuroimmunology, Columbia University Medical Center, New York, NY, USA
- Taub Institute for Research on Alzheimer's Disease and Aging Brain, Columbia University Medical Center, New York, NY, USA
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
- Neuroimmunology Core, Center for Translational & Computational Neuroimmunology, Division of Neuroimmunology, Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Masashi Fujita
- Center for Translational and Computational Neuroimmunology, Columbia University Medical Center, New York, NY, USA
- Taub Institute for Research on Alzheimer's Disease and Aging Brain, Columbia University Medical Center, New York, NY, USA
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Rajesh K Soni
- Proteomics Core, Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY, USA
| | - Xuebing Wu
- Department of Medicine, Department of Systems Biology, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - David A Bennett
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA
| | - Vilas Menon
- Center for Translational and Computational Neuroimmunology, Columbia University Medical Center, New York, NY, USA
- Taub Institute for Research on Alzheimer's Disease and Aging Brain, Columbia University Medical Center, New York, NY, USA
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Marta Olah
- Taub Institute for Research on Alzheimer's Disease and Aging Brain, Columbia University Medical Center, New York, NY, USA
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - Falak Sher
- Center for Translational and Computational Neuroimmunology, Columbia University Medical Center, New York, NY, USA.
- Taub Institute for Research on Alzheimer's Disease and Aging Brain, Columbia University Medical Center, New York, NY, USA.
- Department of Neurology, Columbia University Medical Center, New York, NY, USA.
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Tóth ÁV, Bartók Á. Reviewing critical TRPM2 variants through a structure-function lens. J Biotechnol 2024; 385:49-57. [PMID: 38442841 DOI: 10.1016/j.jbiotec.2024.02.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/27/2024] [Accepted: 02/27/2024] [Indexed: 03/07/2024]
Abstract
The transient receptor potential melastatin 2 (TRPM2) channel plays a central role in connecting redox state with calcium signaling in living cells. This coupling makes TRPM2 essential for physiological functions such as pancreatic insulin secretion or cytokine production, but also allows it to contribute to pathological processes, including neuronal cell death or ischemia-reperfusion injury. Genetic deletion of the channel, albeit not lethal, alters physiological functions in mice. In humans, population genetic studies and whole-exome sequencing have identified several common and rare genetic variants associated with mental disorders and neurodegenerative diseases, including single nucleotide variants (SNVs) in exonic regions. In this review, we summarize available information on the four best-documented SNVs: one common (rs1556314) and three rare genetic variants (rs139554968, rs35288229, and rs145947009), manifested in amino acid substitutions D543E, R707C, R755C, and P1018L respectively. We discuss existing evidence supporting or refuting the associations between SNVs and disease. Furthermore, we aim to interpret the molecular impacts of these amino acid substitutions based on recently published structures of human TRPM2. Finally, we formulate testable hypotheses and suggest means to investigate them. Studying the function of proteins with rare mutations might provide insight into disease etiology and delineate new drug targets.
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Affiliation(s)
- Ádám V Tóth
- Department of Biochemistry, Semmelweis University, 37-47 Tűzoltó street, Budapest 1094, Hungary; HCEMM-SE Molecular Channelopathies Research Group, 37-47 Tűzoltó street, Budapest 1094, Hungary; HUN-REN-SE Ion Channel Research Group, 37-47 Tűzoltó street, Budapest 1094, Hungary
| | - Ádám Bartók
- Department of Biochemistry, Semmelweis University, 37-47 Tűzoltó street, Budapest 1094, Hungary; HCEMM-SE Molecular Channelopathies Research Group, 37-47 Tűzoltó street, Budapest 1094, Hungary; HUN-REN-SE Ion Channel Research Group, 37-47 Tűzoltó street, Budapest 1094, Hungary.
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40
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Castro-Gomez S, Heneka MT. Innate immune activation in neurodegenerative diseases. Immunity 2024; 57:790-814. [PMID: 38599171 DOI: 10.1016/j.immuni.2024.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/11/2024] [Accepted: 03/11/2024] [Indexed: 04/12/2024]
Abstract
Activation of the innate immune system following pattern recognition receptor binding has emerged as one of the major pathogenic mechanisms in neurodegenerative disease. Experimental, epidemiological, pathological, and genetic evidence underscores the meaning of innate immune activation during the prodromal as well as clinical phases of several neurodegenerative disorders including Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, and frontotemporal dementia. Importantly, innate immune activation and the subsequent release of inflammatory mediators contribute mechanistically to other hallmarks of neurodegenerative diseases such as aberrant proteostatis, pathological protein aggregation, cytoskeleton abnormalities, altered energy homeostasis, RNA and DNA defects, and synaptic and network disbalance and ultimately to the induction of neuronal cell death. In this review, we discuss common mechanisms of innate immune activation in neurodegeneration, with particular emphasis on the pattern recognition receptors (PRRs) and other receptors involved in the detection of damage-associated molecular patterns (DAMPs).
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Affiliation(s)
- Sergio Castro-Gomez
- Center for Neurology, Department of Parkinson, Sleep and Movement Disorders, University Hospital Bonn, 53127 Bonn, Germany; Institute of Physiology II, University Hospital Bonn, 53115 Bonn, Germany
| | - Michael T Heneka
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Belval, Luxembourg; Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA.
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Muta K, Haga Y, Hata J, Kaneko T, Hagiya K, Komaki Y, Seki F, Yoshimaru D, Nakae K, Woodward A, Gong R, Kishi N, Okano H. Commonality and variance of resting-state networks in common marmoset brains. Sci Rep 2024; 14:8316. [PMID: 38594386 PMCID: PMC11004137 DOI: 10.1038/s41598-024-58799-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 04/03/2024] [Indexed: 04/11/2024] Open
Abstract
Animal models of brain function are critical for the study of human diseases and development of effective interventions. Resting-state network (RSN) analysis is a powerful tool for evaluating brain function and performing comparisons across animal species. Several studies have reported RSNs in the common marmoset (Callithrix jacchus; marmoset), a non-human primate. However, it is necessary to identify RSNs and evaluate commonality and inter-individual variance through analyses using a larger amount of data. In this study, we present marmoset RSNs detected using > 100,000 time-course image volumes of resting-state functional magnetic resonance imaging data with careful preprocessing. In addition, we extracted brain regions involved in the composition of these RSNs to understand the differences between humans and marmosets. We detected 16 RSNs in major marmosets, three of which were novel networks that have not been previously reported in marmosets. Since these RSNs possess the potential for use in the functional evaluation of neurodegenerative diseases, the data in this study will significantly contribute to the understanding of the functional effects of neurodegenerative diseases.
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Affiliation(s)
- Kanako Muta
- Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan
- Laboratory for Marmoset Neural Architecture, Center for Brain Science, RIKEN, Saitama, Japan
| | - Yawara Haga
- Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan
- Laboratory for Marmoset Neural Architecture, Center for Brain Science, RIKEN, Saitama, Japan
- Live Animal Imaging Center, Central Institute for Experimental Animals, Kanagawa, Japan
| | - Junichi Hata
- Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan
- Laboratory for Marmoset Neural Architecture, Center for Brain Science, RIKEN, Saitama, Japan
- Live Animal Imaging Center, Central Institute for Experimental Animals, Kanagawa, Japan
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan
- Division of Regenerative Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Takaaki Kaneko
- Division of Behavioral Development, Department of System Neuroscience, National Institute for Physiological Science, Aichi, Japan
| | - Kei Hagiya
- Laboratory for Marmoset Neural Architecture, Center for Brain Science, RIKEN, Saitama, Japan
| | - Yuji Komaki
- Live Animal Imaging Center, Central Institute for Experimental Animals, Kanagawa, Japan
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - Fumiko Seki
- Laboratory for Marmoset Neural Architecture, Center for Brain Science, RIKEN, Saitama, Japan
- Live Animal Imaging Center, Central Institute for Experimental Animals, Kanagawa, Japan
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - Daisuke Yoshimaru
- Laboratory for Marmoset Neural Architecture, Center for Brain Science, RIKEN, Saitama, Japan
- Live Animal Imaging Center, Central Institute for Experimental Animals, Kanagawa, Japan
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan
- Division of Regenerative Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Ken Nakae
- Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Aichi, Japan
| | - Alexander Woodward
- Connectome Analysis Unit, Center for Brain Science, RIKEN, Saitama, Japan
| | - Rui Gong
- Connectome Analysis Unit, Center for Brain Science, RIKEN, Saitama, Japan
| | - Noriyuki Kishi
- Laboratory for Marmoset Neural Architecture, Center for Brain Science, RIKEN, Saitama, Japan
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - Hideyuki Okano
- Laboratory for Marmoset Neural Architecture, Center for Brain Science, RIKEN, Saitama, Japan.
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan.
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Rowlands J, Moore DJ. VPS35 and retromer dysfunction in Parkinson's disease. Philos Trans R Soc Lond B Biol Sci 2024; 379:20220384. [PMID: 38368930 PMCID: PMC10874700 DOI: 10.1098/rstb.2022.0384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 11/27/2023] [Indexed: 02/20/2024] Open
Abstract
The vacuolar protein sorting 35 ortholog (VPS35) gene encodes a core component of the retromer complex essential for the endosomal sorting and recycling of transmembrane cargo. Endo-lysosomal pathway deficits are suggested to play a role in the pathogenesis of neurodegenerative diseases, including Parkinson's disease (PD). Mutations in VPS35 cause a late-onset, autosomal dominant form of PD, with a single missense mutation (D620N) shown to segregate with disease in PD families. Understanding how the PD-linked D620N mutation causes retromer dysfunction will provide valuable insight into the pathophysiology of PD and may advance the identification of therapeutics. D620N VPS35 can induce LRRK2 hyperactivation and impair endosomal recruitment of the WASH complex but is also linked to mitochondrial and autophagy-lysosomal pathway dysfunction and altered neurotransmitter receptor transport. The clinical similarities between VPS35-linked PD and sporadic PD suggest that defects observed in cellular and animal models with the D620N VPS35 mutation may provide valuable insights into sporadic disease. In this review, we highlight the current knowledge surrounding VPS35 and its role in retromer dysfunction in PD. We provide a critical discussion of the mechanisms implicated in VPS35-mediated neurodegeneration in PD, as well as the interplay between VPS35 and other PD-linked gene products. This article is part of a discussion meeting issue 'Understanding the endo-lysosomal network in neurodegeneration'.
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Affiliation(s)
- Jordan Rowlands
- Department of Neurodegenerative Science, Van Andel Institute, Grand Rapids, MI 49503, USA
| | - Darren J. Moore
- Department of Neurodegenerative Science, Van Andel Institute, Grand Rapids, MI 49503, USA
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Tilsley P, Moutiez A, Brodovitch A, Mendili MME, Testud B, Zaaraoui W, Verschueren A, Attarian S, Guye M, Boucraut J, Grapperon AM, Stellmann JP. Neurofilament Light Chain Levels Interact with Neurodegenerative Patterns and Motor Neuron Dysfunction in Amyotrophic Lateral Sclerosis. AJNR Am J Neuroradiol 2024; 45:494-503. [PMID: 38548305 DOI: 10.3174/ajnr.a8154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 11/08/2023] [Indexed: 04/10/2024]
Abstract
BACKGROUND AND PURPOSE Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease involving rapid motor neuron degeneration leading to brain, primarily precentral, atrophy. Neurofilament light chains are a robust prognostic biomarker highly specific to ALS, yet associations between neurofilament light chains and MR imaging outcomes are not well-understood. We investigated the role of neurofilament light chains as mediators among neuroradiologic assessments, precentral neurodegeneration, and disability in ALS. MATERIALS AND METHODS We retrospectively analyzed a prospective cohort of 29 patients with ALS (mean age, 56 [SD, 12] years; 18 men) and 36 controls (mean age, 49 [SD, 11] years; 18 men). Patients underwent 3T (n = 19) or 7T (n = 10) MR imaging, serum (n = 23) and CSF (n = 15) neurofilament light chains, and clinical (n = 29) and electrophysiologic (n = 27) assessments. The control group had equivalent 3T (n = 25) or 7T (n = 11) MR imaging. Two trained neuroradiologists performed blinded qualitative assessments of MR imaging anomalies (n = 29 patients, n = 36 controls). Associations between precentral cortical thickness and neurofilament light chains and clinical and electrophysiologic data were analyzed. RESULTS We observed extensive cortical thinning in patients compared with controls. MR imaging analyses showed significant associations between precentral cortical thickness and bulbar or arm impairment following distributions corresponding to the motor homunculus. Finally, uncorrected results showed positive interactions among precentral cortical thickness, serum neurofilament light chains, and electrophysiologic outcomes. Qualitative MR imaging anomalies including global atrophy (P = .003) and FLAIR corticospinal tract hypersignal anomalies (P = .033), correlated positively with serum neurofilament light chains. CONCLUSIONS Serum neurofilament light chains may be an important mediator between clinical symptoms and neuronal loss according to cortical thickness. Furthermore, MR imaging anomalies might have underestimated prognostic value because they seem to indicate higher serum neurofilament light chain levels.
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Affiliation(s)
- Penelope Tilsley
- From the Centre de Résonance Magnétique Biologique et Médicale (P.T., M.M.E.M., B.T., W.Z., A.V., M.G., A.-M.G., J.-P.S.), Centre National de la Recherche Scientifique, Aix-Marseille University, Marseille, France
- Assistance Publique-Marseille Hospitals (P.T., M.M.E.M., B.T., W.Z., M.G., J.-P.S.), Hôpital de la Timone, CEMEREM, Marseille, France
| | - Antoine Moutiez
- Department of Neuroradiology (A.M., B.T., J.-P.S.), Assistance Publique-Marseille Hospitals, Hôpital de la Timone, Marseille, France
| | - Alexandre Brodovitch
- Immunology Laboratory (A.B., J.B.), Assistance Publique-Marseille Hospitals, Conception Hospital, Marseille, France
| | - Mohamed Mounir El Mendili
- From the Centre de Résonance Magnétique Biologique et Médicale (P.T., M.M.E.M., B.T., W.Z., A.V., M.G., A.-M.G., J.-P.S.), Centre National de la Recherche Scientifique, Aix-Marseille University, Marseille, France
- Assistance Publique-Marseille Hospitals (P.T., M.M.E.M., B.T., W.Z., M.G., J.-P.S.), Hôpital de la Timone, CEMEREM, Marseille, France
| | - Benoit Testud
- From the Centre de Résonance Magnétique Biologique et Médicale (P.T., M.M.E.M., B.T., W.Z., A.V., M.G., A.-M.G., J.-P.S.), Centre National de la Recherche Scientifique, Aix-Marseille University, Marseille, France
- Assistance Publique-Marseille Hospitals (P.T., M.M.E.M., B.T., W.Z., M.G., J.-P.S.), Hôpital de la Timone, CEMEREM, Marseille, France
- Department of Neuroradiology (A.M., B.T., J.-P.S.), Assistance Publique-Marseille Hospitals, Hôpital de la Timone, Marseille, France
| | - Wafaa Zaaraoui
- From the Centre de Résonance Magnétique Biologique et Médicale (P.T., M.M.E.M., B.T., W.Z., A.V., M.G., A.-M.G., J.-P.S.), Centre National de la Recherche Scientifique, Aix-Marseille University, Marseille, France
- Assistance Publique-Marseille Hospitals (P.T., M.M.E.M., B.T., W.Z., M.G., J.-P.S.), Hôpital de la Timone, CEMEREM, Marseille, France
| | - Annie Verschueren
- From the Centre de Résonance Magnétique Biologique et Médicale (P.T., M.M.E.M., B.T., W.Z., A.V., M.G., A.-M.G., J.-P.S.), Centre National de la Recherche Scientifique, Aix-Marseille University, Marseille, France
- Referral Centre for Neuromuscular Diseases and ALS (A.V., S.A., A.-M.G.), Assistance Publique-Marseille Hospitals, Hôpital de la Timone, Marseille, France
| | - Shahram Attarian
- Referral Centre for Neuromuscular Diseases and ALS (A.V., S.A., A.-M.G.), Assistance Publique-Marseille Hospitals, Hôpital de la Timone, Marseille, France
- Institut National de la Santé et de la Recherche Médicale (S.A.,), Marseille Medical Genetics Center, Aix-Marseille University, Marseille, France
| | - Maxime Guye
- From the Centre de Résonance Magnétique Biologique et Médicale (P.T., M.M.E.M., B.T., W.Z., A.V., M.G., A.-M.G., J.-P.S.), Centre National de la Recherche Scientifique, Aix-Marseille University, Marseille, France
- Assistance Publique-Marseille Hospitals (P.T., M.M.E.M., B.T., W.Z., M.G., J.-P.S.), Hôpital de la Timone, CEMEREM, Marseille, France
| | - José Boucraut
- Immunology Laboratory (A.B., J.B.), Assistance Publique-Marseille Hospitals, Conception Hospital, Marseille, France
- Institut National de la Santé et de la Recherche Médicale (J.B.) Institut de Neurosciences des Systèmes Aix-Marseille University, Marseille, France
| | - Aude-Marie Grapperon
- From the Centre de Résonance Magnétique Biologique et Médicale (P.T., M.M.E.M., B.T., W.Z., A.V., M.G., A.-M.G., J.-P.S.), Centre National de la Recherche Scientifique, Aix-Marseille University, Marseille, France
| | - Jan-Patrick Stellmann
- From the Centre de Résonance Magnétique Biologique et Médicale (P.T., M.M.E.M., B.T., W.Z., A.V., M.G., A.-M.G., J.-P.S.), Centre National de la Recherche Scientifique, Aix-Marseille University, Marseille, France
- Assistance Publique-Marseille Hospitals (P.T., M.M.E.M., B.T., W.Z., M.G., J.-P.S.), Hôpital de la Timone, CEMEREM, Marseille, France
- Department of Neuroradiology (A.M., B.T., J.-P.S.), Assistance Publique-Marseille Hospitals, Hôpital de la Timone, Marseille, France
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44
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Al-Saad OM, Gabr M, Darwish SS, Rullo M, Pisani L, Miniero DV, Liuzzi GM, Kany AM, Hirsch AKH, Abadi AH, Engel M, Catto M, Abdel-Halim M. Novel 6-hydroxybenzothiazol-2-carboxamides as potent and selective monoamine oxidase B inhibitors endowed with neuroprotective activity. Eur J Med Chem 2024; 269:116266. [PMID: 38490063 DOI: 10.1016/j.ejmech.2024.116266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 02/02/2024] [Accepted: 02/18/2024] [Indexed: 03/17/2024]
Abstract
In neurodegenerative diseases, using a single molecule that can exert multiple effects to modify the disease may have superior activity over the classical "one molecule-one target" approach. Herein, we describe the discovery of 6-hydroxybenzothiazol-2-carboxamides as highly potent and selective MAO-B inhibitors. Variation of the amide substituent led to several potent compounds having diverse side chains with cyclohexylamide 40 displaying the highest potency towards MAO-B (IC50 = 11 nM). To discover new compounds with extended efficacy against neurotoxic mechanisms in neurodegenerative diseases, MAO-B inhibitors were screened against PHF6, R3 tau, cellular tau and α-synuclein (α-syn) aggregation. We identified the phenethylamide 30 as a multipotent inhibitor of MAO-B (IC50 = 41 nM) and α-syn and tau aggregation. It showed no cytotoxic effects on SH-SY5Y neuroblastoma cells, while also providing neuroprotection against toxicities induced by α-syn and tau. The evaluation of key physicochemical and in vitro-ADME properties revealed a great potential as drug-like small molecules with multitarget neuroprotective activity.
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Affiliation(s)
- Omar M Al-Saad
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, 11835, Egypt
| | - Moustafa Gabr
- Department of Radiology, Weill Cornell Medicine, New York, NY, 10065, USA
| | - Sarah S Darwish
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, 11835, Egypt; School of Life and Medical Sciences, University of Hertfordshire Hosted By Global Academic Foundation, New Administrative Capital, 11578, Cairo, Egypt
| | - Mariagrazia Rullo
- Department of Pharmacy-Pharmaceutical Sciences, University of Bari Aldo Moro, Via E. Orabona 4, 70125, Bari, Italy
| | - Leonardo Pisani
- Department of Pharmacy-Pharmaceutical Sciences, University of Bari Aldo Moro, Via E. Orabona 4, 70125, Bari, Italy
| | - Daniela Valeria Miniero
- Department of Biosciences, Biotechnologies and Environment, University of Bari Aldo Moro, Via E. Orabona 4, 70125, Bari, Italy
| | - Grazia Maria Liuzzi
- Department of Biosciences, Biotechnologies and Environment, University of Bari Aldo Moro, Via E. Orabona 4, 70125, Bari, Italy
| | - Andreas M Kany
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS) - Helmholtz Centre for Infection Research (HZI), Saarland University Campus E8.1, 66123, Saarbrücken, Germany
| | - Anna K H Hirsch
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS) - Helmholtz Centre for Infection Research (HZI), Saarland University Campus E8.1, 66123, Saarbrücken, Germany; Department of Pharmacy, Saarland University, Campus E8.1, 66123, Saarbrücken, Germany
| | - Ashraf H Abadi
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, 11835, Egypt
| | - Matthias Engel
- Pharmaceutical and Medicinal Chemistry, Saarland University, Campus C2.3, D-66123, Saarbrücken, Germany
| | - Marco Catto
- Department of Pharmacy-Pharmaceutical Sciences, University of Bari Aldo Moro, Via E. Orabona 4, 70125, Bari, Italy.
| | - Mohammad Abdel-Halim
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, 11835, Egypt.
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45
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Kanwal H, Sangineto M, Ciarnelli M, Castaldo P, Villani R, Romano AD, Serviddio G, Cassano T. Potential Therapeutic Targets to Modulate the Endocannabinoid System in Alzheimer's Disease. Int J Mol Sci 2024; 25:4050. [PMID: 38612861 PMCID: PMC11012768 DOI: 10.3390/ijms25074050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 03/22/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
Alzheimer's disease (AD), the most common neurodegenerative disease (NDD), is characterized by chronic neuronal cell death through progressive loss of cognitive function. Amyloid beta (Aβ) deposition, neuroinflammation, oxidative stress, and hyperphosphorylated tau proteins are considered the hallmarks of AD pathology. Different therapeutic approaches approved by the Food and Drug Administration can only target a single altered pathway instead of various mechanisms that are involved in AD pathology, resulting in limited symptomatic relief and almost no effect in slowing down the disease progression. Growing evidence on modulating the components of the endocannabinoid system (ECS) proclaimed their neuroprotective effects by reducing neurochemical alterations and preventing cellular dysfunction. Recent studies on AD mouse models have reported that the inhibitors of the fatty acid amide hydrolase (FAAH) and monoacylglycerol (MAGL), hydrolytic enzymes for N-arachidonoyl ethanolamine (AEA) and 2-arachidonoylglycerol (2-AG), respectively, might be promising candidates as therapeutical intervention. The FAAH and MAGL inhibitors alone or in combination seem to produce neuroprotection by reversing cognitive deficits along with Aβ-induced neuroinflammation, oxidative responses, and neuronal death, delaying AD progression. Their exact signaling mechanisms need to be elucidated for understanding the brain intrinsic repair mechanism. The aim of this review was to shed light on physiology and pathophysiology of AD and to summarize the experimental data on neuroprotective roles of FAAH and MAGL inhibitors. In this review, we have also included CB1R and CB2R modulators with their diverse roles to modulate ECS mediated responses such as anti-nociceptive, anxiolytic, and anti-inflammatory actions in AD. Future research would provide the directions in understanding the molecular mechanisms and development of new therapeutic interventions for the treatment of AD.
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Affiliation(s)
- Hina Kanwal
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; (M.S.); (M.C.); (R.V.); (A.D.R.); (G.S.); (T.C.)
| | - Moris Sangineto
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; (M.S.); (M.C.); (R.V.); (A.D.R.); (G.S.); (T.C.)
| | - Martina Ciarnelli
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; (M.S.); (M.C.); (R.V.); (A.D.R.); (G.S.); (T.C.)
| | - Pasqualina Castaldo
- Department of Biomedical Sciences and Public Health, School of Medicine, University “Politecnica delle Marche”, 60126 Ancona, Italy;
| | - Rosanna Villani
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; (M.S.); (M.C.); (R.V.); (A.D.R.); (G.S.); (T.C.)
| | - Antonino Davide Romano
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; (M.S.); (M.C.); (R.V.); (A.D.R.); (G.S.); (T.C.)
| | - Gaetano Serviddio
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; (M.S.); (M.C.); (R.V.); (A.D.R.); (G.S.); (T.C.)
| | - Tommaso Cassano
- Department of Medical and Surgical Sciences, University of Foggia, 71122 Foggia, Italy; (M.S.); (M.C.); (R.V.); (A.D.R.); (G.S.); (T.C.)
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46
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Wang M, Liu K. Molecular dynamics simulations to explore the binding mode between the amyloid-β protein precursor (APP) and adaptor protein Mint2. Sci Rep 2024; 14:7975. [PMID: 38575686 PMCID: PMC10995209 DOI: 10.1038/s41598-024-58584-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 04/01/2024] [Indexed: 04/06/2024] Open
Abstract
Alzheimer's disease (AD) presents a significant challenge in neurodegenerative disease management, with limited therapeutic options available for its prevention and treatment. At the heart of AD pathogenesis is the amyloid-β (Aβ) protein precursor (APP), with the interaction between APP and the adaptor protein Mint2 being crucial. Despite previous explorations into the APP-Mint2 interaction, the dynamic regulatory mechanisms by which Mint2 modulates APP binding remain poorly understood. This study undertakes molecular dynamics simulations across four distinct systems-free Mint2, Mint2 bound to APP, a mutant form of Mint2, and the mutant form bound to APP-over an extensive 400 ns timeframe. Our findings reveal that the mutant Mint2 experiences significant secondary structural transformations, notably the formation of an α-helix in residues S55-K65 upon APP binding, within the 400 ns simulation period. Additionally, we observed a reduction in the active pocket size of the mutant Mint2 compared to its wild-type counterpart, enhancing its APP binding affinity. These insights hold promise for guiding the development of novel inhibitors targeting the Mints family, potentially paving the way for new therapeutic strategies in AD prevention and treatment.
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Affiliation(s)
- Min Wang
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, 130022, China.
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun, 130022, China.
| | - Kaifeng Liu
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun, 130012, China
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47
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Cleaver J, Jeffery K, Klenerman P, Lim M, Handunnetthi L, Irani SR, Handel A. The immunobiology of herpes simplex virus encephalitis and post-viral autoimmunity. Brain 2024; 147:1130-1148. [PMID: 38092513 PMCID: PMC10994539 DOI: 10.1093/brain/awad419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 10/25/2023] [Accepted: 11/27/2023] [Indexed: 04/06/2024] Open
Abstract
Herpes simplex virus encephalitis (HSE) is the leading cause of non-epidemic encephalitis in the developed world and, despite antiviral therapy, mortality and morbidity is high. The emergence of post-HSE autoimmune encephalitis reveals a new immunological paradigm in autoantibody-mediated disease. A reductionist evaluation of the immunobiological mechanisms in HSE is crucial to dissect the origins of post-viral autoimmunity and supply rational approaches to the selection of immunotherapeutics. Herein, we review the latest evidence behind the phenotypic progression and underlying immunobiology of HSE including the cytokine/chemokine environment, the role of pathogen-recognition receptors, T- and B-cell immunity and relevant inborn errors of immunity. Second, we provide a contemporary review of published patients with post-HSE autoimmune encephalitis from a combined cohort of 110 patients. Third, we integrate novel mechanisms of autoimmunization in deep cervical lymph nodes to explore hypotheses around post-HSE autoimmune encephalitis and challenge these against mechanisms of molecular mimicry and others. Finally, we explore translational concepts where neuroglial surface autoantibodies have been observed with other neuroinfectious diseases and those that generate brain damage including traumatic brain injury, ischaemic stroke and neurodegenerative disease. Overall, the clinical and immunological landscape of HSE is an important and evolving field, from which precision immunotherapeutics could soon emerge.
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Affiliation(s)
- Jonathan Cleaver
- Oxford Autoimmune Neurology Group, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, OX3 9DU, UK
- Department of Neurology, John Radcliffe Hospital, Oxford University Hospitals, Oxford, OX3 9DU, UK
| | - Katie Jeffery
- Department of Microbiology, Oxford University Hospitals NHS Foundation Trust, Oxford, OX3 9DU, UK
- Radcliffe Department of Medicine, University of Oxford, Oxford, OX3 9DU, UK
| | - Paul Klenerman
- Peter Medawar Building for Pathogen Research, University of Oxford, Oxford, OX1 3SY, UK
- Translational Gastroenterology Unit, Nuffield Department of Medicine, University of Oxford, Oxford, OX3 9DU, UK
| | - Ming Lim
- Children’s Neurosciences, Evelina London Children’s Hospital at Guy’s and St Thomas’ NHS Foundation Trust, London, SE1 7EH, UK
- Department Women and Children’s Health, School of Life Course Sciences, King’s College London, London, WC2R 2LS, UK
| | - Lahiru Handunnetthi
- Oxford Autoimmune Neurology Group, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, OX3 9DU, UK
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK
| | - Sarosh R Irani
- Oxford Autoimmune Neurology Group, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, OX3 9DU, UK
- Department of Neurology, John Radcliffe Hospital, Oxford University Hospitals, Oxford, OX3 9DU, UK
| | - Adam Handel
- Oxford Autoimmune Neurology Group, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, OX3 9DU, UK
- Department of Neurology, John Radcliffe Hospital, Oxford University Hospitals, Oxford, OX3 9DU, UK
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48
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Hirschbeck SS, Lindberg ET, Jang JH, Jacob MR, Lazar Cantrell KL, Do TD. Investigating a Novel Neurodegenerative Disease Toxic Mechanism Involving Lipid Binding Specificity of Amyloid Oligomers. ACS Chem Neurosci 2024; 15:1523-1532. [PMID: 38488720 DOI: 10.1021/acschemneuro.3c00830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024] Open
Abstract
Exploring the mechanisms underlying the toxicity of amyloid oligomers (AOs) presents a significant opportunity for discovering cures and developing treatments for neurodegenerative diseases. Recently, using a combination of ion mobility spectrometry-mass spectrometry (IMS-MS) and X-ray crystallography (XRC), we showed that the peptide KVKVLWDVIEV, which is the G95W mutant of αB-Crystallin (90-100) and abbreviated as G6W, self-assembles up to a dodecamer that structurally resembles lipid transport proteins. The glycine to tryptophan mutation promotes not only larger oligomers and enhanced cytotoxicity in brain slices than the wild type but also a narrow hydrophobic cavity suitable for fatty acid or phospholipid binding. Here, we determine the plausibility of a novel cytotoxic mechanism where the G6W's structural motif could perturb lipid homeostasis by determining its lipid binding selectivity and specificity. We show that the G6W oligomers have a strong affinity toward unsaturated phospholipids with a preference toward phospholipids containing 16-C alkyl chains. Molecular dynamics simulations demonstrate how an unsaturated, 16-C phospholipid fits tightly inside and outside G6W's hydrophobic cavity. This binding is exclusive to the G6W peptide, as other amyloid oligomers with different atomic structures, including its wildtype αB-Crystallin (90-100) and several superoxide dismutase 1 (SOD1) peptides that are known to self-assemble into amyloid oligomers (SOD1P28K and SOD1WG-GW), do not experience the same strong binding affinity. While the existing chaperone-lipid hypothesis on amyloid toxicity suggests amyloid-lipid complexes perforate cell membranes, our work provides a new outlook, indicating that soluble amyloid oligomers disrupt lipid homeostasis via selective protein-ligand interactions. The toxic mechanisms may arise from the formation of unique amyloid oligomer structures assisted by lipid ligands or impaired lipid transports.
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Affiliation(s)
- Sarah S Hirschbeck
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Edward T Lindberg
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Joshua H Jang
- Department of Chemistry, Westmont College, Santa Barbara, California 93108, United States
| | - MaKenna R Jacob
- Department of Chemistry, Westmont College, Santa Barbara, California 93108, United States
| | | | - Thanh D Do
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
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49
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Oka T, Matsuzawa Y, Tsuneyoshi M, Nakamura Y, Aoshima K, Tsugawa H. Multiomics analysis to explore blood metabolite biomarkers in an Alzheimer's Disease Neuroimaging Initiative cohort. Sci Rep 2024; 14:6797. [PMID: 38565541 PMCID: PMC10987653 DOI: 10.1038/s41598-024-56837-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 03/12/2024] [Indexed: 04/04/2024] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease that commonly causes dementia. Identifying biomarkers for the early detection of AD is an emerging need, as brain dysfunction begins two decades before the onset of clinical symptoms. To this end, we reanalyzed untargeted metabolomic mass spectrometry data from 905 patients enrolled in the AD Neuroimaging Initiative (ADNI) cohort using MS-DIAL, with 1,304,633 spectra of 39,108 unique biomolecules. Metabolic profiles of 93 hydrophilic metabolites were determined. Additionally, we integrated targeted lipidomic data (4873 samples from 1524 patients) to explore candidate biomarkers for predicting progressive mild cognitive impairment (pMCI) in patients diagnosed with AD within two years using the baseline metabolome. Patients with lower ergothioneine levels had a 12% higher rate of AD progression with the significance of P = 0.012 (Wald test). Furthermore, an increase in ganglioside (GM3) and decrease in plasmalogen lipids, many of which are associated with apolipoprotein E polymorphism, were confirmed in AD patients, and the higher levels of lysophosphatidylcholine (18:1) and GM3 d18:1/20:0 showed 19% and 17% higher rates of AD progression, respectively (Wald test: P = 3.9 × 10-8 and 4.3 × 10-7). Palmitoleamide, oleamide, diacylglycerols, and ether lipids were also identified as significantly altered metabolites at baseline in patients with pMCI. The integrated analysis of metabolites and genomics data showed that combining information on metabolites and genotypes enhances the predictive performance of AD progression, suggesting that metabolomics is essential to complement genomic data. In conclusion, the reanalysis of multiomics data provides new insights to detect early development of AD pathology and to partially understand metabolic changes in age-related onset of AD.
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Affiliation(s)
- Takaki Oka
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Yuki Matsuzawa
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Momoka Tsuneyoshi
- Human Biology Integration Foundation, Eisai Co., Ltd., Ibaraki, Japan
| | | | - Ken Aoshima
- Microbes & Host Defense Domain, Eisai Co., Ltd., Ibaraki, Japan
- School of Integrative and Global Majors, University of Tsukuba, Ibaraki, Japan
| | - Hiroshi Tsugawa
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Tokyo, Japan.
- RIKEN Center for Sustainable Resource Science, Yokohama, Japan.
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan.
- Graduate School of Medical Life Science, Yokohama City University, Yokohama, Japan.
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50
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Yousefzadeh N, Tran C, Ramirez-Zamora A, Chen J, Fang R, Thai MT. Neuron-level explainable AI for Alzheimer's Disease assessment from fundus images. Sci Rep 2024; 14:7710. [PMID: 38565579 PMCID: PMC10987553 DOI: 10.1038/s41598-024-58121-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 03/26/2024] [Indexed: 04/04/2024] Open
Abstract
Alzheimer's Disease (AD) is a progressive neurodegenerative disease and the leading cause of dementia. Early diagnosis is critical for patients to benefit from potential intervention and treatment. The retina has emerged as a plausible diagnostic site for AD detection owing to its anatomical connection with the brain. However, existing AI models for this purpose have yet to provide a rational explanation behind their decisions and have not been able to infer the stage of the disease's progression. Along this direction, we propose a novel model-agnostic explainable-AI framework, called Granula ̲ r Neuron-le v ̲ el Expl a ̲ iner (LAVA), an interpretation prototype that probes into intermediate layers of the Convolutional Neural Network (CNN) models to directly assess the continuum of AD from the retinal imaging without the need for longitudinal or clinical evaluations. This innovative approach aims to validate retinal vasculature as a biomarker and diagnostic modality for evaluating Alzheimer's Disease. Leveraged UK Biobank cognitive tests and vascular morphological features demonstrate significant promise and effectiveness of LAVA in identifying AD stages across the progression continuum.
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Affiliation(s)
- Nooshin Yousefzadeh
- Department of Computer and Information Science and Engineering, University of Florida, Gainesville, Florida, USA
| | - Charlie Tran
- Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL, USA
| | | | - Jinghua Chen
- Department of Ophthalmology, University of Florida, Gainesville, FL, USA
| | - Ruogu Fang
- Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL, USA.
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA.
- Center for Cognitive Aging and Memory, University of Florida, Gainesville, FL, USA.
| | - My T Thai
- Department of Computer and Information Science and Engineering, University of Florida, Gainesville, Florida, USA.
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