Publications by authors named "Katia Lin"

Article Synopsis
  • MOGAD encephalitis and ADEM present similar symptoms to autoimmune encephalitis (AE) linked with anti-neuronal antibodies, but their treatment and outcomes vary, and testing for anti-MOG antibodies is not routine.
  • In a study of 481 patients with suspected AE, only 3.5% had anti-MOG antibodies, with a higher prevalence in children compared to adults.
  • Patients with MOGAD exhibited fewer behavioral and movement disorders compared to those with AE, but had more symptoms related to demyelination, highlighting the need to consider MOGAD as a differential diagnosis in cases of possible AE.
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Background:  Autoimmune encephalitis (AIE) is a group of inflammatory diseases characterized by the presence of antibodies against neuronal and glial antigens, leading to subacute psychiatric symptoms, memory complaints, and movement disorders. The patients are predominantly young, and delays in treatment are associated with worse prognosis.

Objective:  With the support of the Brazilian Academy of Neurology (Academia Brasileira de Neurologia, ABN) and the Brazilian Society of Child Neurology (Sociedade Brasileira de Neurologia Infantil, SBNI), a consensus on the diagnosis and treatment of AIE in Brazil was developed using the Delphi method.

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Epilepsy is characterized by recurrent, chronic, and unprovoked seizures. Epilepsy has a significant negative impact on a patient's quality of life even if seizures are well controlled. In addition to the distress caused by seizures, patients with epilepsy (PwE) may suffer from cognitive impairment with serious social consequences such as poor interpersonal relationships, loss of employment, and reduced social networks.

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Epilepsy is one of the most common chronical neurological conditions affecting over 50 million people worldwide. In addition to the stigma and discrimination, individuals with epilepsy suffer from a nearly three-fold increased risk of premature death compared to the general population. Although these premature deaths occur due to multiple causes, sudden unexpected death in epilepsy (SUDEP) still challenges neurologists and clinicians dealing with individuals with epilepsy.

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Article Synopsis
  • * Individuals with epilepsy face heightened risks for various heart-related problems, including arrhythmias, heart attacks, and even sudden death, largely due to a mix of traditional risk factors, genetic issues, and effects of medications.
  • * The text emphasizes the need for better cardiac risk assessments in epilepsy patients, discussing echocardiographic findings and proposing future research and risk stratification models to tackle these concerns.
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Article Synopsis
  • The study evaluated the effectiveness of a machine learning algorithm for detecting focal epileptic seizures using heart rate variability data, with previous success seen in a Danish cohort.
  • A total of 34 patients were analyzed, revealing the algorithm's ability to detect 84.8% of seizures, with high sensitivity for generalized tonic-clonic seizures at 96.2%.
  • Results suggest this algorithm could be reliably used for real-time seizure detection in diverse patient populations, potentially integrating into wearable technology for epilepsy management.
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Background:  Patients with epilepsy (PWE) frequently have comorbid psychiatric disorders, the most common of which are depression and anxiety. Attention deficit disorder with hyperactivity (ADHD) is also more frequent among PWE, though that condition has been scarcely studied among the adult PWE population.

Objective:  This study aimed to compare the presence of ADHD symptoms between adult PWE and the general population.

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Background: The frequency of antibodies in autoimmune encephalitis (AIE) may vary in different populations, however, data from developing countries are lacking. To describe the clinical profile of AIE in Brazil, and to evaluate seasonality and predictors of AIE in adult and pediatric patients.

Methods: We evaluated patients with possible AIE from 17 centers of the Brazilian Autoimmune Encephalitis Network (BrAIN) between 2018 and 2022.

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Article Synopsis
  • - This study investigates the prevalence of injuries from functional seizures (FS), which are often confused with epileptic seizures, potentially leading to misdiagnosis and delayed treatment.
  • - The research analyzed 41 studies and found that the lifetime prevalence of injuries due to FS is about 25%, but during specific monitoring periods, it drops to 0.7%.
  • - The reliability of the findings varies; the evidence for lifetime prevalence being "very low," while the specific prevalence during monitoring is rated "low," and the number of injuries per seizure is deemed "moderate."
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Ketogenic dietary therapies (KDTs) are a safe and effective treatment for pharmacoresistant epilepsy in children. There are four principal types of KDTs: the classic KD, the modified Atkins diet (MAD), the medium-chain triglyceride (MCT) diet, and the low glycemic index diet (LGID). The International Ketogenic Diet Study Group recommends managing KDTs in children with epilepsy.

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Article Synopsis
  • The study focuses on the GCS-Pupil score (GCS-P) as a tool to predict hospital mortality in Brazilian patients with severe traumatic brain injury (TBI), comparing its effectiveness to a model that includes additional clinical and radiological factors.
  • Data from 1,066 patients were analyzed, revealing an overall hospital mortality rate of 32.8%, with the GCS-P score showing an accuracy (AUROC) of 0.73, compared to 0.80 for the more comprehensive model.
  • The results indicate that the GCS-P can be used to predict hospital mortality in severe TBI cases, but further research is needed to assess its effectiveness for long-term outcomes in TBI patients
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Article Synopsis
  • The study aimed to assess cognitive performance one year after hospital discharge in patients with severe traumatic brain injury who had favorable outcomes.
  • Out of 163 patients, 73 showed favorable outcomes based on the Glasgow Outcome Scale, but only 28 completed cognitive evaluations, which were then compared to healthy controls.
  • Results indicated that many patients experienced significant cognitive deficits, especially in language and verbal memory, despite being categorized with favorable outcomes, with factors like longer hospital stays, older age, and lower education correlating with poorer performance.
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Background: People with epilepsy (PWE) are at increased risk for premature death due to many factors. Sudden unexpected death in epilepsy (SUDEP) is among the most important causes of death in these individuals and possibly, sudden cardiac death (SCD) in epilepsy is also as important. The possibility of concurrent derangement in electrical and mechanical cardiac function, which could be a marker of early cardiac involvement in PWE, has not been investigated in that population.

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Clinical practice guidelines (CPGs) are statements that provide evidence-based recommendations aimed at optimizing patient care. However, many other documents are often published as "guidelines" when they are not; these documents, although also important in clinical practice, are usually not systematically produced following rigorous processes linking the evidence to the recommendations. Specifically, the International League Against Epilepsy (ILAE) guideline development toolkit aims to ensure that high-quality CPGs are developed to fill knowledge gaps and optimize the management of epilepsy.

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Article Synopsis
  • The systematic review evaluates the impact of the ketogenic diet (KD) on cognitive function in children and adults with pharmacoresistant epilepsy, which affects both neurological health and quality of life.
  • Out of 24 studies reviewed, 19 reported improvements in cognitive function linked to KD, while a few showed mixed results, indicating the need for standardized methods of assessing cognition.
  • The review concludes that there is insufficient evidence to confirm the KD's benefits on cognitive function, calling for more rigorous research with larger, more consistent participant groups and better study designs.
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This study aimed to compare heart rate variability (HRV) in patients with drug-resistant mesial temporal lobe epilepsy (MTLE) with healthy controls and to analyze their clinical and sociodemographic variables predictive for HRV. Thirty-nine consecutive patients with drug-resistant MTLE were included in the study. The control group included twenty-seven healthy participants matched by age and gender.

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Context: Migraine is a headache of variable intensity that is associated with focal and systemic symptoms. A ketogenic diet (KD), a very-low-carbohydrate diet with a proportional increase in fat, causes brain metabolic alterations, which could be beneficial for some neurologic conditions.

Objective: A systematic review was conducted to assess the efficacy and tolerability of KD in preventing migraine in adolescents and adults.

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Article Synopsis
  • The study found a negative association between the phosphorylation of ERK1,2 in the amygdala and anxiety symptoms in patients with drug-resistant epilepsy.
  • In rats, lower levels of P-ERK1,2 in the amygdala correlated with increased anxiety-related behavior but showed a positive correlation with freezing during fear conditioning.
  • The results indicate that ERK1/2 in the basolateral amygdala is necessary for learned defensive behaviors but does not affect innate anxiety responses, highlighting different mechanisms for these two types of behaviors.
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Background: Although ketogenic diet therapy (KDT) is a well-established, nonpharmacologic therapeutic option for patients with pharmacoresistant epilepsy, its availability is still not widespread. The COVID-19 pandemic may have further restricted the access of people with pharmacoresistant epilepsy (PWE) to KDT. Thus, we evaluated the experiences of Brazilian PWE and their caregivers during the first year of the pandemic.

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Background: The coronavirus disease 2019 (COVID-19) outbreak impacted the lives of worldwide people with epilepsy (PWE) in various aspects, particularly in those countries most significantly affected by this pandemic, such as Brazil. We aimed to investigate the prevalence of depressive symptoms in PWE and their correlation with epilepsy features and access to treatment.

Methods: PWE were invited to answer a cross-sectional online-based survey to assess and rate depressive symptoms using the NDDI-E during the first year of the COVID-19 pandemic and its relation to multiple lifestyles epilepsy clinical aspects.

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Migraine and epilepsy are both common episodic disorders, typically precipitated or inhibited by some modulatory factors (MFs). To assess the self-perception of MFs in patients with migraine (PWM) compared to patients with epilepsy (PWE) with a standardized protocol in different countries. Transcultural multicenter comparative cross-sectional study.

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Background: Epilepsy affects about 50 million people worldwide and around 30% of these patients have refractory epilepsy, with potential consequences regarding quality of life, morbidity and premature mortality.

Objective: The aim of treatment with antiseizure medications (ASMs) is to allow patients to remain without seizures, with good tolerability. Levetiracetam is a broad-spectrum ASM with a unique mechanism of action that differs it from other ASMs.

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