Despite decades of dedicated resea rch,Alzheimer's disease (AD) is an age-related and progressive neurodegenerative disorder for which the mechanisms of onset are sti unc ear.AD is cha racterized by featured histo...Despite decades of dedicated resea rch,Alzheimer's disease (AD) is an age-related and progressive neurodegenerative disorder for which the mechanisms of onset are sti unc ear.AD is cha racterized by featured histological alterations including amyloid-beta (AB) plaque deposition,accumulation of neurofibrillary to ngles of hyperphosphorylated-tau,and neuronal loss,accompanied by progressive cognitive decline and behavioral changes.展开更多
In the last few years,preclinical and clinical studies identified the ventral tegmental area(VTA)as one of the first brain regions to be affected in the prodromal phase of Alzheimer's disease(AD).The VTA is a deep...In the last few years,preclinical and clinical studies identified the ventral tegmental area(VTA)as one of the first brain regions to be affected in the prodromal phase of Alzheimer's disease(AD).The VTA is a deep midbrain nucleus rich in dopaminergic neurons that innervates and releases dopamine(DA)in several cortical and subcortical brain regions.DA plays a crucial role in the modulation of both cognitive and noncognitive functions and failure of its release underlies both cognitive and neuropsychiatric symptoms in patients with AD.展开更多
Since their first description in the brains of patients suffering from Alzheimer ’s disease(AD), more than 100 years ago, extracellular amyloid-β(Aβ) plaques and intracellular neurofibrillary tangles have been the ...Since their first description in the brains of patients suffering from Alzheimer ’s disease(AD), more than 100 years ago, extracellular amyloid-β(Aβ) plaques and intracellular neurofibrillary tangles have been the principal focus of AD research. However, this focus has led to the failure of several long and promising clinical trials, and the efficacy of new Aβ-targeting drugs to slow down the disease progression is still controversial despite being successful in reducing the Aβ load.展开更多
We have recently reported enhanced frequencies of polyomavirus infection in post-mortem brain tissue of autistic patients compared to controls. To further explore potential contributions to neurodevelopmental disorder...We have recently reported enhanced frequencies of polyomavirus infection in post-mortem brain tissue of autistic patients compared to controls. To further explore potential contributions to neurodevelopmental disorders by polyomaviruses, we have employed specie-specific TaqMan assays to assess the prevalence and titres of BKV, JCV and SV40 inthe urines of 87 patients with autism spectrum disorder, 84 controls matched by sex and age with the autistic sample, 15 subjects with Down syndrome and 13 fragile X individuals. Prevalence rates of urinary BKV infection were significantly greater in Down syndrome and fragile X patients compared to autistic and control individuals (P < 0.01). In a large majority of patients who showed the presence of urinary genomes, viral titres resulted significantly higher among Down syndrome patients (P < 0.01) compared to controls, autism spectrum disorder and fragile X individuals, who did not significantly differ from each other. Our results are consistent with previous evidence supporting hampered immunological surveillance and/or immune deficits in fragile X and especially in Down syndrome patients.展开更多
Autism is a complex neuropsychiatric disorder of developmental origin, where multiple genetic and environmental factors likely interact resulting in a clinical continuum between "affected" and "unaffect...Autism is a complex neuropsychiatric disorder of developmental origin, where multiple genetic and environmental factors likely interact resulting in a clinical continuum between "affected" and "unaffected" individuals in the general population. During the last two decades, relevant progress has been made in identifying chromosomal regions and genes in linkage or association with autism, but no single gene has emerged as a major cause of disease in a large number of patients. The purpose of this paper is to discuss specific methodological issues and experimental strategies in autism genetic research, based on fourteen years of experience in patient recruitment and association studies of autism spectrum disorder in Italy.展开更多
基金supported by an under-40 grant from the Italian Association for Alzheimer’s Research [AIRALZH AGYR2021]the Strategic University Projects–Young Researcher Independence grant [YRG2021] from the Università Campus Bio-Medico di Roma (Rome, Italy)(to LLB)+1 种基金Italian Ministry of Health [Research Grant:GR-2019-12370446]the American Alzheimer’s Association [AARG-22-922961](to PK)。
文摘Despite decades of dedicated resea rch,Alzheimer's disease (AD) is an age-related and progressive neurodegenerative disorder for which the mechanisms of onset are sti unc ear.AD is cha racterized by featured histological alterations including amyloid-beta (AB) plaque deposition,accumulation of neurofibrillary to ngles of hyperphosphorylated-tau,and neuronal loss,accompanied by progressive cognitive decline and behavioral changes.
基金an under-40grant from the ltalian Association for Alzheimer's Research[AIRALTZH-AGYR2021]by the Strategic University Projects-Young Researcher Independence[YRG2021]from the University Campus Bio-Medico(Rome,Italy)(to LLB)+4 种基金a PhD fellowship by Fondazione Melchiorri(IT)and by the Strategic University Projects-Young Researcher Independence[YRG2021]from the University Campus Bio-Medico(Rome,Italy)(to ES)the American Alzheimer's Association[AARG-18-566270AARG-21-851219]by the Italian Ministry of Health[Research Grant:RF-2018-12365527]by Fondazione Roma(Rome,Italy)(to MDA)。
文摘In the last few years,preclinical and clinical studies identified the ventral tegmental area(VTA)as one of the first brain regions to be affected in the prodromal phase of Alzheimer's disease(AD).The VTA is a deep midbrain nucleus rich in dopaminergic neurons that innervates and releases dopamine(DA)in several cortical and subcortical brain regions.DA plays a crucial role in the modulation of both cognitive and noncognitive functions and failure of its release underlies both cognitive and neuropsychiatric symptoms in patients with AD.
基金supported by Linea D.1.2021 UniversitàCattolica del S.Cuore(to MTV)by the Italian Ministry of Health(IT)[Research Grant:RF-2018-12365527,to MDA and MTV]+1 种基金supported by the American Alzheimer’s Association[AARG-21-851219]by Fondazione Roma(Rome,Italy)。
文摘Since their first description in the brains of patients suffering from Alzheimer ’s disease(AD), more than 100 years ago, extracellular amyloid-β(Aβ) plaques and intracellular neurofibrillary tangles have been the principal focus of AD research. However, this focus has led to the failure of several long and promising clinical trials, and the efficacy of new Aβ-targeting drugs to slow down the disease progression is still controversial despite being successful in reducing the Aβ load.
文摘We have recently reported enhanced frequencies of polyomavirus infection in post-mortem brain tissue of autistic patients compared to controls. To further explore potential contributions to neurodevelopmental disorders by polyomaviruses, we have employed specie-specific TaqMan assays to assess the prevalence and titres of BKV, JCV and SV40 inthe urines of 87 patients with autism spectrum disorder, 84 controls matched by sex and age with the autistic sample, 15 subjects with Down syndrome and 13 fragile X individuals. Prevalence rates of urinary BKV infection were significantly greater in Down syndrome and fragile X patients compared to autistic and control individuals (P < 0.01). In a large majority of patients who showed the presence of urinary genomes, viral titres resulted significantly higher among Down syndrome patients (P < 0.01) compared to controls, autism spectrum disorder and fragile X individuals, who did not significantly differ from each other. Our results are consistent with previous evidence supporting hampered immunological surveillance and/or immune deficits in fragile X and especially in Down syndrome patients.
基金supported by the Italian Ministry for University,Scientific Research and Technologythe Italian Ministry of Health,the Fondazione Giuseppe e Mafalda Luce(Milan,Italy)+3 种基金Autism Aid ONLUS(Naples,Italy)the Autism Speaks Foundation(Princeton,NJ)the Autism Research Institute(San Diego,CA)the European Union(IMI project EU-AIMS)
文摘Autism is a complex neuropsychiatric disorder of developmental origin, where multiple genetic and environmental factors likely interact resulting in a clinical continuum between "affected" and "unaffected" individuals in the general population. During the last two decades, relevant progress has been made in identifying chromosomal regions and genes in linkage or association with autism, but no single gene has emerged as a major cause of disease in a large number of patients. The purpose of this paper is to discuss specific methodological issues and experimental strategies in autism genetic research, based on fourteen years of experience in patient recruitment and association studies of autism spectrum disorder in Italy.