Sadari Manusha, N Varsha, R Varshini, Yuvaraj Sivamani, Kiran Sree Pokkuluri, Sumitha Elayaperumal
{"title":"Altered microbiome influence on the enteric neuromuscular system in amyotrophic lateral sclerosis (ALS).","authors":"Sadari Manusha, N Varsha, R Varshini, Yuvaraj Sivamani, Kiran Sree Pokkuluri, Sumitha Elayaperumal","doi":"10.1016/bs.irn.2025.04.006","DOIUrl":"https://doi.org/10.1016/bs.irn.2025.04.006","url":null,"abstract":"<p><p>Amyotrophic lateral sclerosis (ALS) is a neurological disease marked by the degeneration of motor neurons, leading to muscle weakness and paralysis. While the cause of ALS is uncertain, research indicates that changes in the gut microbiome may influence the disease's progression. This chapter explores how alterations in gut microbiota affect the enteric neuromuscular system (ENS) in ALS. In ALS patients, disrupted gut microbiota are linked to the brain-gut axis, impacting both gastrointestinal function and neuronal health. Studies show that microbial changes are associated with inflammation, immune instability, and neurodegeneration, which exacerbate the disease. Gastrointestinal issues like constipation and dysphagia in ALS are tied to ENS dysregulation. Understanding the connections between the gut microbiome, ENS, and central nervous system (CNS) may lead to novel therapies targeting neurodegeneration and microbial dysbiosis in ALS.</p>","PeriodicalId":94058,"journal":{"name":"International review of neurobiology","volume":"180 ","pages":"95-123"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dysbiosis significantly elevates the probability of altered affective function in Alzheimer disease (AD).","authors":"Harsh Kumar, Daljeet Singh Dhanjal, Rajni Dhalaria, Neetika Kimta, Richard Cimler, Kamil Kuča","doi":"10.1016/bs.irn.2025.04.005","DOIUrl":"https://doi.org/10.1016/bs.irn.2025.04.005","url":null,"abstract":"<p><p>Changes in the makeup of gut microbiota are linked to many neuropsychiatric diseases. Although the exact connection between gut dysbiosis and brain dysfunction is not yet fully understood, but recent data suggests that gut dysbiosis may contribute to the development of Alzheimer's disease (AD) by promoting neuroinflammation, insulin resistance, oxidative stress, and amyloid-beta (Aβ) aggregation. Gut dysbiosis in animal models is primarily characterized by an elevated ratio of Firmicutes/Bacteroidetes which may lead to the accumulation of amyloid precursor protein (APP) in the intestine, in the early stages of AD. Probiotics play a significant role in preventing against the symptoms of AD by restoring gut-brain homeostasis. This chapter provides an overview of the gut microbiota and its dysregulation in etiology of AD. Moreover, novel insights into alteration of the composition of gut microbiota as a preventive or therapeutic approach to AD are discussed.</p>","PeriodicalId":94058,"journal":{"name":"International review of neurobiology","volume":"180 ","pages":"1-24"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Epidemiology of myasthenia gravis.","authors":"Nils Erik Gilhus, Ari Breiner","doi":"10.1016/bs.irn.2025.04.028","DOIUrl":"https://doi.org/10.1016/bs.irn.2025.04.028","url":null,"abstract":"<p><p>MG epidemiology may provide clues to disease etiology and pathogenesis. It is crucial for health planning and to estimate societal needs for health care resources. Recent high-quality studies have found an annual MG incidence of approximately 20 per million person-years, and a prevalence of approximately 25 per 100,000 population. Geographical variation reflects differences in case finding and diagnostic tools, but also a multitude of genetic and environmental etiological and risk factors. MG prevalence has increased in recent years because of more elderly people in the general population, improved case finding, and improved MG treatment with reduced mortality. In populations with optimal treatment, there is only a slightly increased mortality risk with MG. There are marked variations among MG disease subgroups regarding epidemiology. MuSK MG is more common in the Mediterranean area, juvenile MG is most common in China, whereas late onset MG with AChR antibodies is a subtype that has increased in incidence and prevalence globally.</p>","PeriodicalId":94058,"journal":{"name":"International review of neurobiology","volume":"182 ","pages":"161-196"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144661425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Animal models of myasthenia gravis.","authors":"Patricia M Sikorski, Linda L Kusner","doi":"10.1016/bs.irn.2025.04.029","DOIUrl":"https://doi.org/10.1016/bs.irn.2025.04.029","url":null,"abstract":"<p><p>Animal models offer a platform to advance our understanding of myasthenia gravis (MG), an autoimmune disorder characterized by impaired neuromuscular transmission. Experimental autoimmune MG models (EAMG) actively induce autoimmunity through antigen immunization, aiding in understanding the immune response to self. Passive transfer models (PTMG) involve the injection of pathogenic antibodies into animals, providing insights into antibody-mediated mechanisms and complement-driven damage to the neuromuscular junction (NMJ). The pathogenic effect of autoantibodies targeting acetylcholine receptors (AChR), muscle-specific kinase (MuSK), and low-density lipoprotein receptor-related protein 4 (Lrp4) results in changes to the NMJ that are mechanistically distinct. These models validate therapeutic interventions preclinically, with methodologies ranging from antibody transfer to genetic modifications. Despite the translational challenges, these models bridge preclinical research and clinical applications, enabling the development of targeted treatments for MG.</p>","PeriodicalId":94058,"journal":{"name":"International review of neurobiology","volume":"182 ","pages":"145-160"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144661419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alexandra C Bayer, Richard J Nowak, Kevin C O'Connor
{"title":"Contribution of cellular immune dysregulation to myasthenia gravis pathology.","authors":"Alexandra C Bayer, Richard J Nowak, Kevin C O'Connor","doi":"10.1016/bs.irn.2025.04.035","DOIUrl":"https://doi.org/10.1016/bs.irn.2025.04.035","url":null,"abstract":"<p><p>Myasthenia gravis (MG) is an autoimmune disorder in which autoantibodies attack proteins at the neuromuscular junction, resulting in impaired neuromuscular transmission. Like other autoimmune diseases, MG arises when the immune system fails to distinguish self from non-self, attacking and damaging normal tissues. The pathological response involves not only B cells, responsible for autoantibody production, but also T cells, which provide essential support for B cell pathogenicity. While the precise triggers of this abnormal immune response remain undefined, MG is recognized as a multifactorial disease influenced by immune dysregulation along with genetic and environmental factors. This chapter explores the complex immunopathology of MG, highlighting how these factors collectively contribute to disease development. We examine the physiological development of T and B cell compartments, the tolerance checkpoints designed to prevent autoimmunity, and the consequences of their failure. Finally, we discuss the dysregulation of these cellular compartments in MG, emphasizing their roles in disease progression, the persistence of autoimmunity, and responses to treatment.</p>","PeriodicalId":94058,"journal":{"name":"International review of neurobiology","volume":"182 ","pages":"43-66"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144661424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Structure and function of the neuromuscular junction in health and myasthenia gravis.","authors":"Jaap J Plomp, Richard G Webster","doi":"10.1016/bs.irn.2025.04.036","DOIUrl":"https://doi.org/10.1016/bs.irn.2025.04.036","url":null,"abstract":"<p><p>The neuromuscular junction (NMJ) connects a motor neuron to a skeletal muscle cell. Cholinergic synaptic transmission enables muscle contraction, which is crucial for survival. Although synaptic communication at the NMJ is robust, with an inherent safety margin, it becomes hampered in the neuro-immunological disorder myasthenia gravis (MG). The synaptic dysfunction underlies the (fatigable) muscle weakness, which hallmarks this disease. In this chapter, we will review normal NMJ physiology and the pathophysiological consequences of autoimmune attacks in MG, focusing on recent insights and developments.</p>","PeriodicalId":94058,"journal":{"name":"International review of neurobiology","volume":"182 ","pages":"1-19"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144661430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Microbiota dysbiosis impact on the immune system dysregulation in Huntington's disease (HD).","authors":"Papia Acharjee, Shambhu Kumar Prasad, Vishal Vikram Singh, Mukulika Ray, Arup Acharjee","doi":"10.1016/bs.irn.2025.04.002","DOIUrl":"https://doi.org/10.1016/bs.irn.2025.04.002","url":null,"abstract":"<p><p>Huntington's disease (HD) is a neurodegenerative disorder characterized by motor, cognitive, and psychiatric impairments caused by Huntingtin (HTT) gene mutations, resulting in the mutant huntingtin (mHTT) protein. Both innate and adaptive immunities play crucial roles in the pathogenesis of HD. In this chapter, we explore the vital role of the gut microbiota in HD, emphasizing its impact on the immune response and brain health via the gut-brain axis. Dysbiosis influences immune responses and HD pathogenesis through microbial metabolites such as short-chain fatty acids (SCFAs) and pathogen-associated molecular patterns (PAMPs). We discuss advanced mathematical models, telemedicine, and biosensors for tracking HD progression and detecting gut dysbiosis. Nutritional interventions to restore microbiota balance and using artificial intelligence and machine learning to predict disease prognosis and personalized treatments have been highlighted. Based on their unique immune profiles and gut microbiota, personalized medicine has been proposed as a promising strategy for effective HD treatment.</p>","PeriodicalId":94058,"journal":{"name":"International review of neurobiology","volume":"180 ","pages":"57-94"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144144591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Oro-pharyngeal mucosal microbiome alternations causing immune system dysregulation in schizophrenia.","authors":"Deena Krishnan, Puja Ghosh, Nathish Lakshman, Antony Justin, Sivasamy Ramasamy","doi":"10.1016/bs.irn.2025.03.003","DOIUrl":"https://doi.org/10.1016/bs.irn.2025.03.003","url":null,"abstract":"<p><p>Schizophrenia is a chronic and thoughtful psychological disorder that affects a person's thinking, feelings, and behaviours. Multi-factorial genetic, environmental, and neurological variables cause it. Recently, more research focused on the human microbiome, which alters the immune system and develops adverse health effects on the human body. The study discusses a possible relationship between the oropharyngeal microbiome and schizophrenia. According to recent studies, the oropharyngeal microbiome may alter the immune system in the human body and cause various psychiatric disorders, including schizophrenia. The oropharyngeal microbiome can cause schizophrenia either by affecting the genes, chromosomes, and immune system in the human body. Additionally, it examines the combined mechanism of how the oropharyngeal microbiome's alterations lead to genetic abnormalities and immune dysregulation in schizophrenia. By combining the various approaches, this chapter offers a comprehensive view of the oropharyngeal microbiome's role in schizophrenia and suggests that microbial alterations could serve as biomarkers or therapeutic targets for the disorder.</p>","PeriodicalId":94058,"journal":{"name":"International review of neurobiology","volume":"180 ","pages":"125-156"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Abnormal microbiota due to prenatal antibiotic as a possible risk factor for Attention-Deficit / Hyperactivity Disorder (ADHD).","authors":"Sudharsan Parthasarathy, Bupesh Giridharan, Jogeswar Panigrahi, Longnyu M Konyak, Nokenketla Jamir, Siva Vijayakumar Tharumasivam","doi":"10.1016/bs.irn.2025.03.007","DOIUrl":"https://doi.org/10.1016/bs.irn.2025.03.007","url":null,"abstract":"<p><p>One of the major issues modern medicine faces is the increasing use of antibiotics in reaction to the increased incidence of infectious agents. The current trend of antibiotic overuse contributes to microbial dysbiosis. Recent studies have hypothesized that antibiotic exposure during pregnancy, which alters the composition of the microbiome, might increase the likelihood of attention deficit hyperactivity disorder (ADHD). In addition to the ongoing discussion about the potential links between antibiotic usage, microbiome dysbiosis, and ADHD, there is a rising interest in integrating AI and ML into healthcare practices. Diagnosis, treatment plans, and prognoses are all enhanced by these technological advancements. Remote monitors or telemedicine monitoring are among the management techniques described in this chapter for effectively managing illnesses. Also discussed are ways to halt the progression of diseases by preventative measures that use biosensor technology and dietary approaches. Personalized treatment programs, disease progression stages, and prognosis evaluations are all made possible with the use of artificial intelligence and machine learning. By using these technologies to provide individualized therapy, healthcare practitioners may get a better understanding of ADHD and perhaps improve patient outcomes.</p>","PeriodicalId":94058,"journal":{"name":"International review of neurobiology","volume":"180 ","pages":"299-328"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}