RESUMEN
Ataxia-telangiectasia (A-T) is a disease caused by mutations in the ATM gene (11q22.3-23.1) that induce neurodegeneration Sasihuseyinoglu AS et al. Pediatr Allergy Immunol Pulmonol 31(1):9-14, 2018, Teive HAG et al. Parkinsonism Relat Disord 46:3-8, 2018. Clinically, A-T is characterized by ataxia, mucocutaneous telangiectasia, immunodeficiency, and malignancy. Movement disorders have been the most described and well-studied symptoms of A-T. Other studies have reported visuospatial processing disorders, executive function disorders and emotional regulation disorders, which are clinical manifestations that characterize cerebellar cognitive affective syndrome (CCAS) Choy KR et al. Dev Dyn 247(1):33-46, 2018. To describe the neurocognitive and emotional state of pediatric patients with ataxia-telangiectasia and to discuss whether they have cerebellar cognitive affective syndrome. This observational, cross-sectional, and descriptive study included 9 patients with A-T from May 2019 to May 2021. A complete medical history was retrieved, and tests were applied to assess executive functions, visual-motor integration and abilities, language, psychological disorders, and ataxia. Six girls and 3 boys agreed to participate. The age range was 6 to 14 years. The participants included five schoolchildren and four teenagers. Eight patients presented impaired executive functioning. All patients showed some type of error in copying and tracing (distortion) in the performance of visual perceptual abilities. Emotional disorders such as anxiety and depression were observed in six patients. Eight patients presented with dyslalia and impairments in word articulation, all patients presented with ataxia, and seven patients used a wheelchair. All patients presented symptoms consistent with CCAS and had variable cognitive performance.
Asunto(s)
Ataxia Telangiectasia , Ataxia Cerebelosa , Enfermedades Cerebelosas , Masculino , Femenino , Adolescente , Humanos , Niño , Ataxia Telangiectasia/complicaciones , Estudios Transversales , Ataxia Cerebelosa/genética , Cognición/fisiologíaRESUMEN
Introduction: This project aimed to investigate the association between biometric components of metabolic syndrome (MetS) with gray matter volume (GMV) obtained with magnetic resonance imaging (MRI) from a large cohort of community-based adults (n = 776) subdivided by age and sex and employing brain regions of interest defined previously as the "Neural Signature of MetS" (NS-MetS). Methods: Lipid profiles, biometrics, and regional brain GMV were obtained from the Genetics of Brain Structure (GOBS) image archive. Participants underwent T1-weighted MR imaging. MetS components (waist circumference, fasting plasma glucose, triglycerides, HDL cholesterol, and blood pressure) were defined using the National Cholesterol Education Program Adult Treatment Panel III. Subjects were grouped by age: early adult (18-25 years), young adult (26-45 years), and middle-aged adult (46-65 years). Linear regression modeling was used to investigate associations between MetS components and GMV in five brain regions comprising the NS-MetS: cerebellum, brainstem, orbitofrontal cortex, right insular/limbic cluster and caudate. Results: In both men and women of each age group, waist circumference was the single component most strongly correlated with decreased GMV across all NS-MetS regions. The brain region most strongly correlated to all MetS components was the posterior cerebellum. Conclusion: The posterior cerebellum emerged as the region most significantly associated with MetS individual components, as the only region to show decreased GMV in young adults, and the region with the greatest variance between men and women. We propose that future studies investigating neurological effects of MetS and its comorbidities-namely diabetes and obesity-should consider the NS-MetS and the differential effects of age and sex.
RESUMEN
The cerebellar cognitive affective syndrome (CCAS) has been consistently described in patients with acute/subacute cerebellar injuries. However, studies with chronic patients have had controversial findings that have not been explored with new cerebellar-target tests, such as the CCAS scale (CCAS-S). The objective of this research is to prove and contrast the usefulness of the CCAS-S and the Montreal Cognitive Assessment (MoCA) test to evaluate cognitive/affective impairments in patients with chronic acquired cerebellar lesions, and to map the cerebellar areas whose lesions correlated with dysfunctions in these tests. CCAS-S and MoCA were administrated to 22 patients with isolated chronic cerebellar strokes and a matched comparison group. The neural bases underpinning both tests were explored with multivariate lesion-symptom mapping (LSM) methods. MoCA and CCAS-S had an adequate test performance with efficient discrimination between patients and healthy volunteers. However, only impairments determined by the CCAS-S resulted in significant regional localization within the cerebellum. Specifically, patients with chronic cerebellar lesions in right-lateralized posterolateral regions manifested cognitive impairments inherent to CCAS. These findings concurred with the anterior-sensorimotor/posterior-cognitive dichotomy in the human cerebellum and revealed clinically intra- and cross-lobular significant regions (portions of right lobule VI, VII, Crus I-II) for verbal tasks that overlap with the "language" functional boundaries in the cerebellum. Our findings prove the usefulness of MoCA and CCAS-S to reveal cognitive impairments in patients with chronic acquired cerebellar lesions. This study extends the understanding of long-term CCAS and introduces multivariate LSM methods to identify clinically intra- and cross-lobular significant regions underpinning chronic CCAS.
Asunto(s)
Enfermedades Cerebelosas , Trastornos del Conocimiento , Accidente Cerebrovascular , Cerebelo , Cognición , Trastornos del Conocimiento/diagnóstico , Trastornos del Conocimiento/etiología , Trastornos del Conocimiento/patología , Humanos , Imagen por Resonancia Magnética , Accidente Cerebrovascular/complicacionesRESUMEN
The cerebellar cognitive affective syndrome scale (CCAS-S) was designed to detect specific cognitive dysfunctions in cerebellar patients but is scarcely validated in spinocerebellar ataxias (SCA). The objective of this study is to determine the usefulness of the CCAS-S in a Cuban cohort of SCA2 patients and the relationship of its scores with disease severity. The original scale underwent a forward and backward translation into Spanish language, followed by a pilot study to evaluate its comprehensibility. Reliability, discriminant, and convergent validity assessments were conducted in 64 SCA2 patients and 64 healthy controls matched for sex, age, and education. Fifty patients completed the Montreal Cognitive Assessment (MoCA) test. The CCAS-S showed an acceptable internal consistency (Cronbach's alpha = 0.74) while its total raw score and the number of failed tests showed excellent (ICC = 0.94) and good (ICC = 0.89) test-retest reliability, respectively. Based on original cut-offs, the sensitivity of CCAS-S to detect possible/probable/definite CCAS was notably high (100%/100%/91%), but specificities were low (6%/30/64%) because the decreased specificity observed in four items. CCAS-S performance was significantly influenced by ataxia severity in patients and by education in both groups. CCAS-S scores correlated with MoCA scores, but showed higher sensitivity than MoCA to detect cognitive impairments in patients. The CCAS-S is particularly useful to detect cognitive impairments in SCA2 but some transcultural and/or age and education-dependent adaptations could be necessary to improve its diagnostic properties. Furthermore, this scale confirmed the parallelism between cognitive and motor deficits in SCA2, giving better insights into the disease pathophysiology and identifying novel outcomes for clinical trials.
Asunto(s)
Ataxia Cerebelosa , Enfermedades Cerebelosas , Disfunción Cognitiva , Ataxias Espinocerebelosas , Ataxia , Disfunción Cognitiva/diagnóstico , Humanos , Proyectos Piloto , Reproducibilidad de los Resultados , Ataxias Espinocerebelosas/complicaciones , Ataxias Espinocerebelosas/diagnóstico , SíndromeRESUMEN
Spastic paraplegia type 7 (SPG7) is one of the most common forms of autosomal recessive hereditary spastic paraplegia, which can lead to a hybrid spastic-ataxic phenotype. Recently, novel complicated forms of SPG7, including cognitive and social impairment phenotypes, have been reported. We present a SPG7 case with two pathogenic variants in compound heterozygosity in the SPG7 gene, featuring a cerebellar cognitive affective syndrome with psychosis not yet described in the literature.
Asunto(s)
Disfunción Cognitiva , Trastornos Psicóticos , ATPasas Asociadas con Actividades Celulares Diversas/genética , Disfunción Cognitiva/genética , Humanos , Metaloendopeptidasas/genética , Mutación , Fenotipo , Trastornos Psicóticos/complicaciones , Trastornos Psicóticos/genéticaRESUMEN
SYNE1 gene mutations were identified as a cause of late-onset pure cerebellar syndrome. Non-cerebellar symptoms, including cognitive impairment, were already described in this condition. The aim of this study was to perform a detailed cognitive and psychiatric description of patients with SYNE1 gene mutations. We performed neuropsychological and psychiatric evaluations of six patients with SYNE1 ataxia and compared their performance with 18 normal controls paired for age and education level. SYNE1 ataxia patients present cognitive dysfunction, characterized by impairment in attention and processing speed domains. Otherwise, the psychiatric assessment reported low levels of overall behavioral symptoms with only some minor anxiety-related complaints. Although this is a small sample of patients, these results suggest that SYNE1 ataxia patients may represent a model to investigate effects of cerebellar degeneration in higher hierarchical cognitive functions. For further studies, abstract thinking impairment in schizophrenia may be related to dysfunction in cerebellum pathways.
Asunto(s)
Ataxia Cerebelosa/genética , Ataxia Cerebelosa/psicología , Trastornos del Conocimiento/genética , Trastornos del Conocimiento/psicología , Proteínas del Citoesqueleto/genética , Proteínas del Tejido Nervioso/genética , Adulto , Edad de Inicio , Ansiedad/etiología , Ansiedad/psicología , Atención , Ataxia Cerebelosa/complicaciones , Cognición , Trastornos del Conocimiento/etiología , Manual Diagnóstico y Estadístico de los Trastornos Mentales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pruebas Neuropsicológicas , Escalas de Valoración PsiquiátricaRESUMEN
Machado-Joseph disease (MJD) is the most common spinocerebellar ataxia worldwide with a broad range of clinical manifestations, but psychotic symptoms were not previously characterized. We investigated the psychiatric manifestations of a large cohort of Brazilian patients with MJD in an attempt to characterize the presence of psychotic symptoms. We evaluated 112 patients with clinical and molecular diagnosis of MJD from February 2008 to November 2013. Patients with psychotic symptoms were referred to psychiatric evaluation and brain perfusion single-photon emission computed tomography (SPECT) analysis. A specific scale-Positive and Negative Syndrome Scale (PANSS)-was used to characterize psychotic symptoms in MJD patients. We also performed an autopsy from one of the patients with MJD and psychotic symptoms. Five patients presented psychotic symptoms. Patients with psychotic symptoms were older and had a late onset of the disease (p < 0.05). SPECT results showed that MJD patients had significant regional cerebral blood flow (rCBF) decrease in the cerebellum bilaterally and vermis compared with healthy subjects. No significant rCBF differences were found in patients without psychotic symptoms compared to patients with psychotic symptoms. The pathological description of a patient with MJD and psychotic symptoms revealed severe loss of neuron bodies in the dentate nucleus and substantia nigra. MJD patients with a late onset of the disease and older ones are at risk to develop psychotic symptoms during the disease progression. These clinical findings may be markers for an underlying cortical-cerebellar disconnection or degeneration of specific cortical and subcortical regions that may characterize the cerebellar cognitive affective syndrome.
Asunto(s)
Encéfalo/metabolismo , Enfermedad de Machado-Joseph/epidemiología , Enfermedad de Machado-Joseph/metabolismo , Trastornos Psicóticos/epidemiología , Trastornos Psicóticos/metabolismo , Adulto , Edad de Inicio , Anciano , Anciano de 80 o más Años , Encéfalo/patología , Brasil/epidemiología , Circulación Cerebrovascular/fisiología , Estudios de Cohortes , Femenino , Humanos , Enfermedad de Machado-Joseph/complicaciones , Enfermedad de Machado-Joseph/patología , Masculino , Persona de Mediana Edad , Neuronas/patología , Escalas de Valoración Psiquiátrica , Trastornos Psicóticos/complicaciones , Trastornos Psicóticos/patología , Tomografía Computarizada de Emisión de Fotón ÚnicoRESUMEN
Introducción. El diagnóstico de síndrome cerebeloso cognitivo afectivo se debe realizar en aquellos pacientes con lesiones cerebelosas y con déficit cognitivo asociado a deficiencias neuropsicológicas visoespaciales o ejecutivas, trastornos del lenguaje expresivo y trastornos afectivos. Caso clínico. Adolescente de 16 años diagnosticada con trastorno por déficit de atención e hiperactividad a los 7 años, que presenta inestabilidad emocional, apatía y discurso y lectura poco fluidos. Se observan deficiencias visoespaciales en los tests neuropsicológicos. Se realiza una resonancia magnética cerebral por presentar alteración de la coordinación y motricidad fina, y se evidencia atrofia de vermis cerebeloso. La sintomatología es compatible con síndrome cerebeloso cognitivo afectivo. Clásicamente, el cerebelo es conocido por su rol motor. Sin embargo, está implicado en funciones cognitivas superiores, en la expresión emocional y en la regulación conductual. El síndrome cerebeloso cognitivo afectivo es una entidad no bien conocida que debemos incluir en el diagnóstico diferencial de trastornos neuropsiquiátricos con lesión cerebelar.(AU)
Introduction. The diagnosis of Cerebellar Cognitive Affective Syndrome should be considered in patients with cerebellar lesions who also suffer cognitive deficits associated with visuospatial or executive neuropsychological disorders, expressive language disorders and affective disorders. Clinical case. A 16 year old adolescent diagnosed with Attention Deficit Hyperactivity Disorder at the age of 7 presents with emotional instability, apathy, and speech and reading difficulties. Neuropsychological tests show visuospatial difficulties. A brain magnetic resonance imaging is performed due to impaired coordination and fine motor movements and shows atrophy of the cerebellar vermis. The clinical picture suggests a diagnosis of Cerebellar Cognitive Affective Syndrome. The cerebellum is mostly known for its motor role. However, it is also involved in higher cognitive functions, expression of emotion and behavioral regulation. Cerebellar Cognitive Affective Syndrome is a relatively unknown diagnosis and should be included in the differential diagnosis of neuropsychiatric disorders with cerebellar lesion.(AU)
RESUMEN
Introducción. El diagnóstico de síndrome cerebeloso cognitivo afectivo se debe realizar en aquellos pacientes con lesiones cerebelosas y con déficit cognitivo asociado a deficiencias neuropsicológicas visoespaciales o ejecutivas, trastornos del lenguaje expresivo y trastornos afectivos. Caso clínico. Adolescente de 16 años diagnosticada con trastorno por déficit de atención e hiperactividad a los 7 años, que presenta inestabilidad emocional, apatía y discurso y lectura poco fluidos. Se observan deficiencias visoespaciales en los tests neuropsicológicos. Se realiza una resonancia magnética cerebral por presentar alteración de la coordinación y motricidad fina, y se evidencia atrofia de vermis cerebeloso. La sintomatología es compatible con síndrome cerebeloso cognitivo afectivo. Clásicamente, el cerebelo es conocido por su rol motor. Sin embargo, está implicado en funciones cognitivas superiores, en la expresión emocional y en la regulación conductual. El síndrome cerebeloso cognitivo afectivo es una entidad no bien conocida que debemos incluir en el diagnóstico diferencial de trastornos neuropsiquiátricos con lesión cerebelar.
Introduction. The diagnosis of Cerebellar Cognitive Affective Syndrome should be considered in patients with cerebellar lesions who also suffer cognitive deficits associated with visuospatial or executive neuropsychological disorders, expressive language disorders and affective disorders. Clinical case. A 16 year old adolescent diagnosed with Attention Deficit Hyperactivity Disorder at the age of 7 presents with emotional instability, apathy, and speech and reading difficulties. Neuropsychological tests show visuospatial difficulties. A brain magnetic resonance imaging is performed due to impaired coordination and fine motor movements and shows atrophy of the cerebellar vermis. The clinical picture suggests a diagnosis of Cerebellar Cognitive Affective Syndrome. The cerebellum is mostly known for its motor role. However, it is also involved in higher cognitive functions, expression of emotion and behavioral regulation. Cerebellar Cognitive Affective Syndrome is a relatively unknown diagnosis and should be included in the differential diagnosis of neuropsychiatric disorders with cerebellar lesion.