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1.
Nat Rev Neurosci ; 20(1): 49-65, 2019 01.
Artículo en Inglés | MEDLINE | ID: mdl-30459365

RESUMEN

Many processes in the human body - including brain function - are regulated over the 24-hour cycle, and there are strong associations between disrupted circadian rhythms (for example, sleep-wake cycles) and disorders of the CNS. Brain disorders such as autism, depression and Parkinson disease typically develop at certain stages of life, and circadian rhythms are important during each stage of life for the regulation of processes that may influence the development of these disorders. Here, we describe circadian disruptions observed in various brain disorders throughout the human lifespan and highlight emerging evidence suggesting these disruptions affect the brain. Currently, much of the evidence linking brain disorders and circadian dysfunction is correlational, and so whether and what kind of causal relationships might exist are unclear. We therefore identify remaining questions that may direct future research towards a better understanding of the links between circadian disruption and CNS disorders.


Asunto(s)
Encefalopatías/complicaciones , Ritmo Circadiano/fisiología , Longevidad/fisiología , Trastornos del Sueño del Ritmo Circadiano/complicaciones , Sueño/fisiología , Animales , Encefalopatías/fisiopatología , Humanos , Trastornos del Sueño del Ritmo Circadiano/fisiopatología
2.
Am J Med Genet A ; 194(4): e63486, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38041217

RESUMEN

Aicardi-Goutières syndrome (AGS) is an autosomal recessive inflammatory syndrome that manifests as an early-onset encephalopathy with both neurologic and extraneurologic clinical findings. AGS has been associated with pathogenic variants in nine genes: TREX1, RNASEH2B, RNASEH2C, RNASEH2A, SAMHD1, ADAR, IFIH1, LSM11, and RNU7-1. Diagnosis is established by clinical findings (encephalopathy and acquired microcephaly, intellectual and physical impairments, dystonia, hepatosplenomegaly, sterile pyrexia, and/or chilblains), characteristic abnormalities on cranial CT (calcification of the basal ganglia and white matter) and MRI (leukodystrophic changes), or the identification of pathogenic/likely pathogenic variants in the known genes. One of the genes associated with AGS, SAMHD1, has also been associated with a spectrum of cerebrovascular diseases, including moyamoya disease (MMD). In this report, we describe a 31-year-old male referred to genetics for MMD since childhood who lacked the hallmark features of AGS patients but was found to have compound heterozygous SAMHD1 variants. He later developed mitral valve insufficiency due to recurrent chordal rupture and ultimately underwent a heart transplant at 37 years of age. Thus, these data suggest that SAMHD1 pathogenic variants can cause MMD without typical AGS symptoms and support that SAMHD1 should be assessed in MMD patients even in the absence of AGS features.


Asunto(s)
Enfermedades Autoinmunes del Sistema Nervioso , Encefalopatías , Enfermedad de Moyamoya , Malformaciones del Sistema Nervioso , Masculino , Humanos , Niño , Adulto , Proteína 1 que Contiene Dominios SAM y HD/genética , Enfermedad de Moyamoya/complicaciones , Válvula Mitral/patología , Mutación , Malformaciones del Sistema Nervioso/diagnóstico por imagen , Malformaciones del Sistema Nervioso/genética , Enfermedades Autoinmunes del Sistema Nervioso/diagnóstico , Enfermedades Autoinmunes del Sistema Nervioso/genética , Enfermedades Autoinmunes del Sistema Nervioso/patología , Encefalopatías/complicaciones
3.
Am J Med Genet A ; 194(4): e63478, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-37975178

RESUMEN

Bilateral perisylvian polymicrogyria (BPP) is a structural malformation of the cerebral cortex that can be caused by several genetic abnormalities. The most common clinical manifestations of BPP include intellectual disability and epilepsy. Cytoplasmic FMRP-interacting protein 2 (CYFIP2) is a protein that interacts with the fragile X mental retardation protein (FMRP). CYFIP2 variants can cause various brain structural abnormalities with the most common clinical manifestations of intellectual disability, epileptic encephalopathy and dysmorphic features. We present a girl with multiple disabilities and BPP caused by a heterozygous, novel, likely pathogenic variant (c.1651G>C: p.(Val551Leu) in the CYFIP2 gene. Our case report broadens the spectrum of genetic diversity associated with BPP by incorporating CYFIP2.


Asunto(s)
Anomalías Múltiples , Encefalopatías , Discapacidad Intelectual , Malformaciones del Desarrollo Cortical , Polimicrogiria , Femenino , Humanos , Discapacidad Intelectual/genética , Discapacidad Intelectual/complicaciones , Polimicrogiria/genética , Polimicrogiria/complicaciones , Anomalías Múltiples/genética , Malformaciones del Desarrollo Cortical/diagnóstico , Malformaciones del Desarrollo Cortical/genética , Malformaciones del Desarrollo Cortical/complicaciones , Encefalopatías/complicaciones , Proteínas Adaptadoras Transductoras de Señales/genética
4.
Epilepsia ; 65(1): 165-176, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37964464

RESUMEN

OBJECTIVE: Focal epilepsy is common in low- and middle-income countries. The frequency and nature of possible underlying structural brain abnormalities have, however, not been fully assessed. METHODS: We evaluated the possible structural causes of epilepsy in 331 people with epilepsy (240 from Kenya and 91 from South Africa) identified from community surveys of active convulsive epilepsy. Magnetic resonance imaging (MRI) scans were acquired on 1.5-Tesla scanners to determine the frequency and nature of any underlying lesions. We estimated the prevalence of these abnormalities using Bayesian priors (from an earlier pilot study) and observed data (from this study). We used a mixed-effect modified Poisson regression approach with the site as a random effect to determine the clinical features associated with neuropathology. RESULTS: MRI abnormalities were found in 140 of 240 (modeled prevalence = 59%, 95% confidence interval [CI]: 53%-64%) of people with epilepsy in Kenya, and in 62 of 91 (modeled prevalence = 65%, 95% CI: 57%-73%) in South Africa, with a pooled modeled prevalence of 61% (95% CI: 56%-66%). Abnormalities were common in those with a history of adverse perinatal events (15/23 [65%, 95% CI: 43%-84%]), exposure to parasitic infections (83/120 [69%, 95% CI: 60%-77%]) and focal electroencephalographic features (97/142 [68%, 95% CI: 60%-76%]), but less frequent in individuals with generalized electroencephalographic features (44/99 [44%, 95% CI: 34%-55%]). Most abnormalities were potentially epileptogenic (167/202, 82%), of which mesial temporal sclerosis (43%) and gliosis (34%) were the most frequent. Abnormalities were associated with co-occurrence of generalized non-convulsive seizures (relative risk [RR] = 1.12, 95% CI: 1.04-1.25), lack of family history of seizures (RR = 0.91, 0.86-0.96), convulsive status epilepticus (RR = 1.14, 1.08-1.21), frequent seizures (RR = 1.12, 1.04-1.20), and reported use of anti-seizure medication (RR = 1.22, 1.18-1.26). SIGNIFICANCE: MRI identified pathologies are common in people with epilepsy in Kenya and South Africa. Mesial temporal sclerosis, the most common abnormality, may be amenable to surgical correction. MRI may have a diagnostic value in rural Africa, but future longitudinal studies should examine the prognostic role.


Asunto(s)
Encefalopatías , Epilepsia Generalizada , Epilepsia , Esclerosis del Hipocampo , Humanos , Kenia/epidemiología , Sudáfrica/epidemiología , Teorema de Bayes , Proyectos Piloto , Epilepsia/diagnóstico por imagen , Epilepsia/epidemiología , Encefalopatías/complicaciones , Epilepsia Generalizada/complicaciones , Imagen por Resonancia Magnética
5.
Am J Geriatr Psychiatry ; 32(9): 1093-1104, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-38171949

RESUMEN

OBJECTIVES: To measure the diagnostic accuracy of DeltaScan: a portable real-time brain state monitor for identifying delirium, a manifestation of acute encephalopathy (AE) detectable by polymorphic delta activity (PDA) in single-channel electroencephalograms (EEGs). DESIGN: Prospective cross-sectional study. SETTING: Six Intensive Care Units (ICU's) and 17 non-ICU departments, including a psychiatric department across 10 Dutch hospitals. PARTICIPANTS: 494 patients, median age 75 (IQR:64-87), 53% male, 46% in ICUs, 29% delirious. MEASUREMENTS: DeltaScan recorded 4-minute EEGs, using an algorithm to select the first 96 seconds of artifact-free data for PDA detection. This algorithm was trained and calibrated on two independent datasets. METHODS: Initial validation of the algorithm for AE involved comparing its output with an expert EEG panel's visual inspection. The primary objective was to assess DeltaScan's accuracy in identifying delirium against a delirium expert panel's consensus. RESULTS: DeltaScan had a 99% success rate, rejecting 6 of the 494 EEG's due to artifacts. Performance showed and an Area Under the Receiver Operating Characteristic Curve (AUC) of 0.86 (95% CI: 0.83-0.90) for AE (sensitivity: 0.75, 95%CI=0.68-0.81, specificity: 0.87 95%CI=0.83-0.91. The AUC was 0.71 for delirium (95%CI=0.66-0.75, sensitivity: 0.61 95%CI=0.52-0.69, specificity: 72, 95%CI=0.67-0.77). Our validation aim was an NPV for delirium above 0.80 which proved to be 0.82 (95%CI: 0.77-0.86). Among 84 non-delirious psychiatric patients, DeltaScan differentiated delirium from other disorders with a 94% (95%CI: 87-98%) specificity. CONCLUSIONS: DeltaScan can diagnose AE at bedside and shows a clear relationship with clinical delirium. Further research is required to explore its role in predicting delirium-related outcomes.


Asunto(s)
Encefalopatías , Delirio , Electroencefalografía , Unidades de Cuidados Intensivos , Humanos , Delirio/diagnóstico , Masculino , Femenino , Anciano , Estudios Transversales , Estudios Prospectivos , Anciano de 80 o más Años , Electroencefalografía/métodos , Persona de Mediana Edad , Encefalopatías/diagnóstico , Encefalopatías/complicaciones , Algoritmos , Sensibilidad y Especificidad
6.
Eur J Clin Microbiol Infect Dis ; 43(3): 567-575, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38240989

RESUMEN

OBJECTIVE: The study analyzed the clinical features of children who had severe influenza and discussed on the risk factors associated with death in this population. METHODS: A total of 167 children with severe influenza admitted to the intensive care unit of our hospital from January 2018 to August 2023 were selected and divided into the death group (27 cases) and the survival group (140 cases). Demographic characteristics and clinical data were collected and compared between the two groups. Logistic regression analysis was used to explore the risk factors for death in children with severe influenza. RESULTS: The male-to-female ratio of the 167 children with severe influenza was 2.21:1, the median age was 3 years, and influenza A accounted for 70.66%. The CD4+ T cells percentage and CD4/CD8 were lower in the death group; the percentage of comorbid underlying diseases, mechanical ventilation, other systemic involvement, comorbid associated encephalopathy or encephalitis, and red blood cell distribution width (RDW), lactate dehydrogenase, activated partial thromboplastin time (APTT), and interleukin 6 were higher in the death group. The mechanical ventilation, associated encephalopathy or encephalitis, RDW, APTT, and CD4/CD8 were the independent risk factors for death. CONCLUSION: Mechanical ventilation, comorbid encephalopathy or encephalitis, increased RDW, prolonged APTT, and decreased CD4/CD8 are independent risk factors for death in children with severe influenza.


Asunto(s)
Encefalopatías , Encefalitis , Gripe Humana , Niño , Humanos , Masculino , Femenino , Preescolar , Gripe Humana/complicaciones , Gripe Humana/epidemiología , Linfocitos T , Encefalopatías/complicaciones , Factores de Riesgo , Estudios Retrospectivos
7.
Epilepsy Behav ; 153: 109719, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38428176

RESUMEN

Status gelasticus is a rare form of status epilepticus characterized by prolonged and/or clustered gelastic seizures. The review encompasses an analysis of cases reported in the literature, focusing on causes, clinical-electroencephalographic features, and therapeutic interventions. The study reveals the challenges in defining and understanding status gelasticus due to its diverse etiologies and limited reported cases. The association with hypothalamic hamartomas and other brain abnormalities underscores the importance of thorough evaluations. The review also discusses new treatments, including medications and less invasive surgeries. While progress has been made, the study points out challenges in diagnosing and managing this complex condition, highlighting the importance of ongoing research.


Asunto(s)
Encefalopatías , Epilepsias Parciales , Hamartoma , Enfermedades Hipotalámicas , Estado Epiléptico , Humanos , Epilepsias Parciales/diagnóstico , Enfermedades Hipotalámicas/complicaciones , Encefalopatías/complicaciones , Encéfalo , Estado Epiléptico/complicaciones , Hamartoma/complicaciones , Imagen por Resonancia Magnética
9.
Can J Neurol Sci ; 51(2): 300-304, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-37385640

RESUMEN

Cerebral visual impairments have been of great interest to neurologists, ophthalmologists, and neuroscientists. Complicated or partial varieties related to cortical blindness are discussed in this review. They are a fascinating alphabet of eponymic clinical syndromes, bordering neurology, ophthalmology, and even psychiatry. Recent functional imaging and experimental studies have contributed further knowledge of cognitive visual organization in addition to the classical lesion evidence.


Asunto(s)
Ceguera Cortical , Encefalopatías , Neurología , Humanos , Trastornos de la Visión , Encefalopatías/complicaciones , Síndrome , Alucinaciones/etiología
10.
Endocr J ; 71(3): 305-312, 2024 Mar 28.
Artículo en Inglés | MEDLINE | ID: mdl-38246654

RESUMEN

Coronavirus disease 2019 (COVID-19) due to a severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection can include various systemic organ disorders including endocrinopathies and neurological manifestations. We report the case of a 65-year-old Japanese man who developed isolated adrenocorticotropic hormone (ACTH) deficiency and encephalopathy following SARS-CoV-2 infection. Two weeks after his COVID-19 diagnosis, he was emergently admitted to our hospital because of subacute-onset delirium. On admission, he presented hyponatremia (128 mEq/L) and secondary adrenal insufficiency (ACTH <1.5 pg/mL, cortisol 0.53 µg/dL). Brain imaging and laboratory examinations including SARS-CoV-2 polymerase chain reaction testing in the cerebrospinal fluid revealed no abnormalities. His consciousness level worsened despite the amelioration of hyponatremia by intravenous hydrocortisone (100 mg/day), but his neurological presentations completely resolved after three consecutive days of high-dose (400 mg/day) hydrocortisone. His encephalopathy did not deteriorate during hydrocortisone tapering. He continued 15 mg/day hydrocortisone after discharge. His encephalopathy might have developed via a disturbance of the autoimmune system, or a metabolic effect associated with adrenal insufficiency, although the time lag between the hyponatremia's improvement and the patient's neurological response to the steroid was incompatible with common cases of delirium concurrent with adrenal insufficiency. At 13 months after his hospitalization, the patient's neurological symptoms have not recurred and he has no endocrinological dysfunctions other than the remaining ACTH deficiency. A thorough consideration of the immunological and metabolic characteristics of SARS-CoV-2 is advisable when clinicians treat patients during and even after their COVID-19 disease period.


Asunto(s)
Insuficiencia Suprarrenal , Hormona Adrenocorticotrópica/deficiencia , Encefalopatías , COVID-19 , Delirio , Enfermedades del Sistema Endocrino , Enfermedades Genéticas Congénitas , Hipoglucemia , Hiponatremia , Masculino , Humanos , Anciano , Hidrocortisona/uso terapéutico , COVID-19/complicaciones , Prueba de COVID-19 , Hiponatremia/complicaciones , SARS-CoV-2 , Insuficiencia Suprarrenal/complicaciones , Insuficiencia Suprarrenal/tratamiento farmacológico , Encefalopatías/etiología , Encefalopatías/complicaciones , Delirio/etiología , Delirio/complicaciones
11.
BMC Pediatr ; 24(1): 156, 2024 Mar 05.
Artículo en Inglés | MEDLINE | ID: mdl-38443804

RESUMEN

This paper reports a case of influenza complicated with influenza associated encephalopathy complicated with acute pancreatitis. This kind of disease is relatively rare, we hope to draw people's attention to it in order to improve early detection and prognosis.


Asunto(s)
Encefalopatías , Subtipo H1N1 del Virus de la Influenza A , Gripe Humana , Pancreatitis , Humanos , Pancreatitis/complicaciones , Enfermedad Aguda , Gripe Humana/complicaciones , Gripe Humana/diagnóstico , Encefalopatías/complicaciones
12.
Pediatr Emerg Care ; 40(2): 156-161, 2024 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-38295195

RESUMEN

ABSTRACT: Hyperammonemia is a serious clinical condition associated with significant morbidity and mortality. In the pediatric population, this is often caused by urea cycle disorders, acute liver failure, or other less common underlying etiologies. Children and teens with hyperammonemia can have a broad range of clinical findings, including vomiting, respiratory distress, and changes in mental status. As ammonia levels worsen, this presentation can progress to respiratory failure, encephalopathy, cerebral edema, seizures, and death. Given the risk of neurologic damage, timely identification and management of hyperammonemia is critical and includes initial resuscitation, early consultation with subspecialists, and initiation of appropriate therapies. It is important for pediatric emergency medicine providers to understand the clinical findings, causes, diagnosis, and management of hyperammonemia because they play a key role in the provision of effective, multidisciplinary care of these patients.


Asunto(s)
Encefalopatías , Hiperamonemia , Trastornos Innatos del Ciclo de la Urea , Adolescente , Humanos , Niño , Hiperamonemia/complicaciones , Hiperamonemia/diagnóstico , Trastornos Innatos del Ciclo de la Urea/terapia , Encefalopatías/complicaciones , Convulsiones , Servicio de Urgencia en Hospital
13.
Mol Med ; 29(1): 27, 2023 02 23.
Artículo en Inglés | MEDLINE | ID: mdl-36823611

RESUMEN

Sepsis-associated encephalopathy (SAE) is one of the most common types of organ dysfunction without overt central nervous system (CNS) infection. It is associated with higher mortality, low quality of life, and long-term neurological sequelae, its mortality in patients diagnosed with sepsis, progressing to SAE, is 9% to 76%. The pathophysiology of SAE is still unknown, but its mechanisms are well elaborated, including oxidative stress, increased cytokines and proinflammatory factors levels, disturbances in the cerebral circulation, changes in blood-brain barrier permeability, injury to the brain's vascular endothelium, altered levels of neurotransmitters, changes in amino acid levels, dysfunction of cerebral microvascular cells, mitochondria dysfunction, activation of microglia and astrocytes, and neuronal death. The diagnosis of SAE involves excluding direct CNS infection or other types of encephalopathies, which might hinder its early detection and appropriate implementation of management protocols, especially in paediatric patients where only a few cases have been reported in the literature. The most commonly applied diagnostic tools include electroencephalography, neurological imaging, and biomarker detection. SAE treatment mainly focuses on managing underlying conditions and using antibiotics and supportive therapy. In contrast, sedative medication is used judiciously to treat those showing features such as agitation. The most widely used medication is dexmedetomidine which is neuroprotective by inhibiting neuronal apoptosis and reducing a sepsis-associated inflammatory response, resulting in improved short-term mortality and shorter time on a ventilator. Other agents, such as dexamethasone, melatonin, and magnesium, are also being explored in vivo and ex vivo with encouraging results. Managing modifiable factors associated with SAE is crucial in improving generalised neurological outcomes. From those mentioned above, there are still only a few experimentation models of paediatric SAE and its treatment strategies. Extrapolation of adult SAE models is challenging because of the evolving brain and technical complexity of the model being investigated. Here, we reviewed the current understanding of paediatric SAE, its pathophysiological mechanisms, diagnostic methods, therapeutic interventions, and potential emerging neuroprotective agents.


Asunto(s)
Encefalopatías , Encefalopatía Asociada a la Sepsis , Sepsis , Adulto , Humanos , Niño , Encefalopatía Asociada a la Sepsis/diagnóstico , Encefalopatía Asociada a la Sepsis/etiología , Encefalopatía Asociada a la Sepsis/terapia , Calidad de Vida , Encéfalo/metabolismo , Sepsis/metabolismo , Encefalopatías/etiología , Encefalopatías/complicaciones
14.
J Pediatr ; 258: 113360, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-36828342

RESUMEN

OBJECTIVES: To assess whether viral, bacterial, metabolic, and autoimmune diseases are missed by conventional diagnostics among children with severe acute encephalopathy in sub-Saharan Africa. STUDY DESIGN: One hundred thirty-four children (6 months to 18 years) presenting with nontraumatic coma or convulsive status epilepticus to 1 of 4 medical referral centers in Uganda, Malawi, and Rwanda were enrolled between 2015 and 2016. Locally available diagnostic tests could be supplemented in 117 patients by viral, bacterial, and 16s quantitative polymerase chain reaction testing, metagenomics, untargeted metabolomics, and autoimmune immunohistochemistry screening. RESULTS: Fourteen (12%) cases of viral encephalopathies, 8 (7%) cases of bacterial central nervous system (CNS) infections, and 4 (4%) cases of inherited metabolic disorders (IMDs) were newly identified by additional diagnostic testing as the most likely cause of encephalopathy. No confirmed cases of autoimmune encephalitis were found. Patients for whom additional diagnostic testing aided causal evaluation (aOR 3.59, 90% CI 1.57-8.36), patients with a viral CNS infection (aOR 7.91, 90% CI 2.49-30.07), and patients with an IMD (aOR 9.10, 90% CI 1.37-110.45) were at increased risk for poor outcome of disease. CONCLUSIONS: Viral and bacterial CNS infections and IMDs are prevalent causes of severe acute encephalopathy in children in Uganda, Malawi, and Rwanda that are missed by conventional diagnostics and are associated with poor outcome of disease. Improved diagnostic capacity may increase diagnostic yield and might improve outcome of disease.


Asunto(s)
Encefalopatías , Encefalitis , Enfermedades Metabólicas , Niño , Humanos , Encefalopatías/diagnóstico , Encefalopatías/complicaciones , Encefalitis/complicaciones , Encefalitis/diagnóstico , Encefalitis/epidemiología , Estudios de Cohortes , Malaui
15.
J Neurovirol ; 29(4): 492-506, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37477790

RESUMEN

Norovirus, a positive-stranded RNA virus, is one of the leading causes of acute gastroenteritis among all age groups worldwide. The neurological manifestations of norovirus are underrecognized, but several wide-spectrum neurological manifestations have been reported among infected individuals in the last few years. Our objective was to summarize the features of norovirus-associated neurological disorders based on the available literature. We used the existing PRISMA consensus statement. Data were collected from PubMed, EMBASE, Web of Science, and Scopus databases up to Jan 30, 2023, using pre-specified searching strategies. Twenty-one articles were selected for the qualitative synthesis. Among these, seven hundred and seventy-four patients with norovirus-associated neurological manifestations were reported. Most cases were seizure episodes, infection-induced encephalopathy, and immune-driven disorders. However, only a few studies have addressed the pathogenesis of norovirus-related neurological complications. The pathogenesis of these manifestations may be mediated by either neurotropism or aberrant immune-mediated injury, or both, depending on the affected system. Our review could help clinicians to recognize these neurological manifestations better and earlier while deepening the understanding of the pathogenesis of this viral infection.


Asunto(s)
Encefalopatías , Infecciones por Caliciviridae , Gastroenteritis , Norovirus , Humanos , Norovirus/genética , Infecciones por Caliciviridae/complicaciones , Gastroenteritis/complicaciones , Convulsiones/complicaciones , Encefalopatías/complicaciones
16.
Cell Mol Neurobiol ; 43(7): 3393-3403, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37553546

RESUMEN

Kleine-Levin Syndrome is a rare neurological disorder with onset typically during adolescence that is characterized by recurrent episodes of hypersomnia, behavioral changes, and cognitive abnormalities, in the absence of structural changes in neuroimaging. As for many functional brain disorders, the exact disease mechanism in Kleine-Levin Syndrome is presently unknown, preventing the development of specific treatment approaches or protective measures. Here we review the pathophysiology and genetics of this functional brain disorder and then present a specific working hypothesis. A neurodevelopmental mechanism has been suspected based on associations with obstetric complications. Recent studies have focused on genetic factors whereby the first genome-wide association study (GWAS) in Kleine-Levin Syndrome has defined a linkage at the TRANK1 locus. A Gene x Environment interaction model involving obstetric complications was proposed based on concepts developed for other functional brain disorders. To stimulate future research, we here performed annotations of the genes under consideration for Kleine-Levin Syndrome in relation to factors expected to be associated with obstetric complications. Annotations used data-mining of gene/protein lists related to for hypoxia, ischemia, and vascular factors and targeted literature searches. Tentative links for TRANK1, four additional genes in the TRANK1 locus, and LMOD3-LMO2 are described. Protein interaction data for TRANK1 indicate links to CBX2, CBX4, and KDM3A, that in turn can be tied to hypoxia. Taken together, the neurological sleep disorder, Kleine-Levin Syndrome, shows genetic and mechanistic overlap with well analyzed brain disorders such as schizophrenia, autism spectrum disorder and ADHD in which polygenic predisposition interacts with external events during brain development, including obstetric complications.


Asunto(s)
Trastorno del Espectro Autista , Encefalopatías , Síndrome de Kleine-Levin , Enfermedades del Sistema Nervioso , Adolescente , Humanos , Síndrome de Kleine-Levin/complicaciones , Síndrome de Kleine-Levin/genética , Estudio de Asociación del Genoma Completo , Encefalopatías/complicaciones , Encéfalo , Enfermedades del Sistema Nervioso/complicaciones , Ligasas , Proteínas del Grupo Polycomb/genética , Histona Demetilasas con Dominio de Jumonji
17.
Am J Med Genet A ; 191(5): 1261-1272, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-36797513

RESUMEN

You-Hoover-Fong syndrome (YHFS) is an autosomal recessive condition caused by pathogenic variants in the TELO2 gene. Affected individuals were reported to have global developmental delay, intellectual disability, microcephaly, dysmorphic facial features, ocular involvement including cortical visual impairment, strabismus, cataract and rotatory nystagmus, movement disorder, hypertonia and spasticity, balance disturbance and ataxia, and abnormal sleep pattern. Other features reported include poor growth, cleft palate, cardiac malformations, epilepsy, scoliosis, and hearing loss. To date, 12 individuals with YHFS have been reported in the literature. Here we describe 14 new individuals with YHFS from 10 families. Their clinical presentation provides additional support of the phenotype recognized previously and delineates the clinical spectrum associated with YHFS syndrome. In addition, we present a review of the literature including follow-up data on four previously reported individuals with YHFS.


Asunto(s)
Encefalopatías , Epilepsia , Discapacidad Intelectual , Microcefalia , Humanos , Encefalopatías/complicaciones , Epilepsia/complicaciones , Discapacidad Intelectual/patología , Microcefalia/patología , Síndrome
18.
Pediatr Res ; 93(4): 985-989, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-35854084

RESUMEN

BACKGROUND: The incidence of cerebral sinovenous thrombosis (CSVT) in infants receiving therapeutic hypothermia for neonatal encephalopathy remains controversial. The aim of this study was to identify if the routine use of magnetic resonance venography (MRV) in term-born infants receiving hypothermia is associated with diagnostic identification of CSVT. METHODS: We performed a retrospective review of 291 infants who received therapeutic hypothermia from January 2014 to March 2020. Demographic and clinical data, as well as the incidence of CSVT, were compared between infants born before and after adding routine MRV to post-rewarming magnetic resonance imaging (MRI). RESULTS: Before routine inclusion of MRV, 209 babies were cooled, and 25 (12%) underwent MRV. Only one baby (0.5%) was diagnosed with CSVT in that period, and it was detected by structural MRI, then confirmed with MRV. After the inclusion of routine MRV, 82 infants were cooled. Of these, 74 (90%) had MRV and none were diagnosed with CSVT. CONCLUSION: CSVT is uncommon in our cohort of infants receiving therapeutic hypothermia for neonatal encephalopathy. Inclusion of routine MRV in the post-rewarming imaging protocol was not associated with increased detection of CSVT in this population. IMPACT: Cerebral sinovenous thrombosis (CSVT) in infants with NE receiving TH may not be as common as previously indicated. The addition of MRV to routine post-rewarming imaging protocol did not lead to increased detection of CSVT in infants with NE. Asymmetry on MRV of the transverse sinus is a common anatomic variant. MRI alone may be sufficient in indicating the presence of CSVT.


Asunto(s)
Encefalopatías , Hipotermia Inducida , Trombosis de los Senos Intracraneales , Trombosis , Recién Nacido , Humanos , Lactante , Flebografía/efectos adversos , Trombosis de los Senos Intracraneales/diagnóstico por imagen , Trombosis de los Senos Intracraneales/terapia , Imagen por Resonancia Magnética , Hipotermia Inducida/efectos adversos , Encefalopatías/complicaciones , Espectroscopía de Resonancia Magnética , Trombosis/complicaciones
19.
Nephrol Dial Transplant ; 38(5): 1151-1157, 2023 05 04.
Artículo en Inglés | MEDLINE | ID: mdl-36323454

RESUMEN

BACKGROUND: Cognitive impairment (CI) in chronic kidney disease (CKD) is highly prevalent and is associated with multiple limitations to patients as well as a higher mortality, more days of hospitalisation and a lower quality of life. Frailty in CKD is associated with adverse health outcomes and is also highly prevalent. The aim of our study was to determine the prevalence and characteristics of CI and relate the findings to frailty, mobility, muscle strength and health-related quality of life (HRQOL). METHODS: Non-dialysis patients with CKD stages 3-5 were prospectively evaluated for inclusion. Excluded were patients with other cognitive disorders, signs of overt uraemic encephalopathy, severe infection and hyponatraemia. All patients underwent psychometric testing (five different tests): assessments of mobility, strength and frailty and an evaluation of HRQOL. Based on the number of pathological psychometric test results, we established two different definitions of CI: subclinical uraemic encephalopathy 1 (SUE1: one pathological test) and subclinical uraemic encephalopathy 2 (SUE2: two or more pathological test results). RESULTS: Sixty-two patients were included [median age 66 years (interquartile range 57-75), male 55%]. Most patients had CKD stage 3 (48%; stage 4: 32%; stage 5: 19%). CI was highly prevalent (SUE1: 60%; SUE2: 42%) and associated with a higher risk of falls (pathological tandem gait test; SUE1: 50% versus 16%, P = .023; SUE2: 69% versus 15%, P = .001), lower muscle strength (SUE2-pathological: 39% versus 7%, P = .008), frailty (SUE1: 59% versus 28%, P = .038; SUE2: 67% versus 33%, P = .028) and HRQOL. CONCLUSION: CI is highly prevalent in non-dialysis CKD patients. Even mild CI is associated with decreased mobility, muscle strength and HRQOL and increased frailty.


Asunto(s)
Encefalopatías , Disfunción Cognitiva , Fragilidad , Insuficiencia Renal Crónica , Humanos , Masculino , Anciano , Calidad de Vida , Fragilidad/diagnóstico , Fragilidad/epidemiología , Insuficiencia Renal Crónica/epidemiología , Disfunción Cognitiva/diagnóstico , Disfunción Cognitiva/epidemiología , Disfunción Cognitiva/etiología , Encefalopatías/complicaciones
20.
Cerebrovasc Dis ; 52(4): 393-400, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36566747

RESUMEN

INTRODUCTION: Cerebral venous thrombosis (CVT) associated with pregnancy and puerperium has long been recognized, with poor information in terms of functional outcomes. Our objective was to analyze risk factors, clinical, imaging, and laboratory variables to predict functional outcome and death in this population. METHODS: CVT registries from three referral centers from Pakistan, Turkey, and Mexico, recruiting prospective cases, were combined for CVT associated with pregnancy or puerperium. Datasets and variables were standardized. Demographic characteristics, presentation, risk factors, and functional outcomes in pregnancy/puerperium-related CVT were analyzed. Binary logistic regression was used to assess predictors of outcome. The main outcome was modified Rankin score >2 at 30 days and mortality at 30 days. RESULTS: Five hundred fifty-three cases (median age 28 years [IQR 23-34]) of CVT associated with pregnancy and puerperium were included; 439 cases (79.4%) happened in the puerperium and 20.6% during pregnancy (53.5% occurred during the first trimester). Anemia (36.7%) and dehydration (22.9%) were the commonest obstetric risk factors identified. Predictors of poor outcome (mRS >2) were encephalopathy (OR 12.8, p < 0.001), cases from Mexican origin (OR 3.1, p = 0.004), fever/puerperal infection (OR 2.7, p = 0.02), and anemia (OR 2.2, p = 0.01). Cases from Mexican origin (OR 12.0, p = 0.003) and Encephalopathy (OR 7.7, p < 0.001), presented with the highest mortality association in the final adjusted model. DISCUSSION/CONCLUSION: In CVT associated with pregnancy and puerperium, encephalopathy, fever/puerperal infection, and anemia are associated with bad functional outcomes, meanwhile encephalopathy and cases from Mexican origin with higher mortality in the acute (30-days) of CVT onset. Anemia and infection are potential reversible predictors of poor outcome that clinicians should be aware of in order to prevent poor outcomes in these patients.


Asunto(s)
Anemia , Encefalopatías , Trombosis Intracraneal , Infección Puerperal , Trombosis de la Vena , Embarazo , Femenino , Humanos , Adulto , Trombosis Intracraneal/diagnóstico por imagen , Trombosis Intracraneal/terapia , Anemia/complicaciones , Encefalopatías/complicaciones , Periodo Posparto , Trombosis de la Vena/diagnóstico por imagen , Trombosis de la Vena/terapia
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