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1.
BMC Neurol ; 23(1): 12, 2023 Jan 12.
Artículo en Inglés | MEDLINE | ID: mdl-36631752

RESUMEN

INTRODUCTION: AIMS Myasthenia Gravis (MG) is an autoimmune neuromuscular disease in which patients suffer from recurrent exacerbation. There are insufficient data measuring the effects of the resources employed before and during acute exacerbation on subsequent disease outcomes. This study aims to identify factors which lead to lengthened hospital stay. METHODS: This is a retrospective chart review of acute MG exacerbations requiring hospitalization. Exacerbations were identified using ICD-9/ICD-10 codes and considered the following variables: age and Myasthenia Gravis Foundation of America (MGFA) class at initial MG diagnosis, age and MGFA class at exacerbation, sex, thymectomy, cause of exacerbation, treatment regimen at time of exacerbation, inpatient treatment regimen, length of hospital stay (LOS), intubation, use of noninvasive ventilation, complications, and disposition. RESULTS: Seventy patients with 141 hospitalizations were identified. Crisis management characterized by intubation and plasmapheresis positively correlated with LOS (both p < .001). Almost 1/5 hospitalizations required intubation. Previous thymectomy negatively correlated with LOS (p < .05). In contrast, male sex correlated with longer LOS (p < .05). One-third of hospital stays were followed by discharge to a post-acute care facility, 7% home with home health, and 1 hospitalization resulted in death. DISCUSSION: Plasmapheresis, intubation, and male sex were associated with increased LOS in acute MG exacerbation. Intubation appears to be the strongest predictor of LOS. Those with previous thymectomy had shorter hospital stays. The role of thymectomy in the acute setting merits further analysis.


Asunto(s)
Miastenia Gravis , Humanos , Masculino , Tiempo de Internación , Estudios Retrospectivos , Resultado del Tratamiento , Miastenia Gravis/complicaciones , Miastenia Gravis/terapia , Respiración Artificial
2.
Muscle Nerve ; 59(5): 531-536, 2019 05.
Artículo en Inglés | MEDLINE | ID: mdl-30620104

RESUMEN

INTRODUCTION: Universally established comprehensive clinical bulbar scales objectively assessing disease progression in amyotrophic lateral sclerosis (ALS) are currently lacking. The goal of this working group project is to design a best practice set of provisional bulbar ALS guidelines, available for immediate implementation within all ALS clinics. METHODS: ALS specialists across multiple related disciplines participated in a series of clinical bulbar symposia, intending to identify and summarize the currently accepted best practices for the assessment and management of bulbar dysfunction in ALS Results: Summary group recommendations for individual speech, Augmentative and Alternative Communication (AAC), and swallowing sections were achieved, focusing on the optimal proposed level of care within each domain. DISCUSSION: We have identified specific clinical recommendations for each of the 3 domains of bulbar functioning, available for incorporation within all ALS clinics. Future directions will be to establish a formal set of bulbar guidelines through a methodological and evidence-based approach. Muscle Nerve 59:531-531, 2019.


Asunto(s)
Esclerosis Amiotrófica Lateral/rehabilitación , Trastornos de Deglución/rehabilitación , Trastornos del Habla/rehabilitación , Esclerosis Amiotrófica Lateral/complicaciones , Equipos de Comunicación para Personas con Discapacidad , Trastornos de Deglución/diagnóstico , Trastornos de Deglución/etiología , Manejo de la Enfermedad , Humanos , Derivación y Consulta , Trastornos del Habla/diagnóstico , Trastornos del Habla/etiología , Logopedia
3.
Lancet ; 383(9934): 2065-2072, 2014 Jun 14.
Artículo en Inglés | MEDLINE | ID: mdl-24582471

RESUMEN

BACKGROUND: Amyotrophic lateral sclerosis is a fatal neurodegenerative disease with few therapeutic options. Mild obesity is associated with greater survival in patients with the disease, and calorie-dense diets increased survival in a mouse model. We aimed to assess the safety and tolerability of two hypercaloric diets in patients with amyotrophic lateral sclerosis receiving enteral nutrition. METHODS: In this double-blind, placebo-controlled, randomised phase 2 clinical trial, we enrolled adults with amyotrophic lateral sclerosis from participating centres in the USA. Eligible participants were aged 18 years or older with no history of diabetes or liver or cardiovascular disease, and who were already receiving percutaneous enteral nutrition. We randomly assigned participants (1:1:1) using a computer-generated list of random numbers to one of three dietary interventions: replacement calories using an isocaloric tube-fed diet (control), a high-carbohydrate hypercaloric tube-fed diet (HC/HC), or a high-fat hypercaloric tube-fed diet (HF/HC). Participants received the intervention diets for 4 months and were followed up for 5 months. The primary outcomes were safety and tolerability, analysed in all patients who began their study diet. This trial is registered with ClinicalTrials.gov, number NCT00983983. FINDINGS: Between Dec 14, 2009, and Nov 2, 2012, we enrolled 24 participants, of whom 20 started their study diet (six in the control group, eight in the HC/HC group, and six in the HF/HC group). One patient in the control group, one in the HC/HC group, and two in the HF/HC group withdrew consent before receiving the intervention. Participants who received the HC/HC diet had a smaller total number of adverse events than did those in the other groups (23 in the HC/HC group vs 42 in the control group vs 48 in the HF/HC group; overall, p=0.06; HC/HC vs control, p=0.06) and significantly fewer serious adverse events than did those on the control diet (none vs nine; p=0.0005). Fewer patients in the HC/HC group discontinued their study diet due to adverse events (none [0%] of eight in the HC/HC group vs three [50%] of six in the control group). During the 5 month follow-up, no deaths occurred in the nine patients assigned to the HC/HC diet compared with three deaths (43%) in the seven patients assigned to the control diet (log-rank p=0.03). Adverse events, tolerability, deaths, and disease progression did not differ significantly between the HF/HC group and the control group. INTERPRETATION: Our results provide preliminary evidence that hypercaloric enteral nutrition is safe and tolerable in patients with amyotrophic lateral sclerosis, and support the study of nutritional interventions in larger randomised controlled trials at earlier stages of the disease. FUNDING: Muscular Dystrophy Association, National Center for Research Resources, National Institutes of Health, and Harvard NeuroDiscovery Center.


Asunto(s)
Esclerosis Amiotrófica Lateral/terapia , Nutrición Enteral/métodos , Adulto , Anciano , Esclerosis Amiotrófica Lateral/sangre , Colesterol/sangre , Dieta Alta en Grasa/efectos adversos , Dieta Alta en Grasa/métodos , Método Doble Ciego , Ingestión de Energía , Nutrición Enteral/efectos adversos , Femenino , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Proyectos Piloto
4.
J Neurol Sci ; 466: 123264, 2024 Oct 04.
Artículo en Inglés | MEDLINE | ID: mdl-39426360

RESUMEN

OBJECTIVES: This post-hoc analysis evaluates the long-term efficacy of efgartigimod versus placebo in adult patients with generalized myasthenia gravis (gMG) with acetylcholine-receptor autoantibodies (AChR-Ab+), based on data from the ADAPT RCT and its open-label extension ADAPT+. METHODS: Changes from baseline in Quantitative Myasthenia Gravis (QMG) and Myasthenia Gravis-Activities of Daily Living (MG-ADL) scores were assessed by treatment group over the ADAPT (up to 20 weeks) and ADAPT+ time horizon (extended to 64 weeks for efgartigimod group patients). Response to treatment was defined as (Meriggioli, 2009 [3])5-point reduction in QMG or (Meriggioli, 2009 [3])3-point reduction in MG-ADL vs. baseline values. RESULTS: AChR-Ab+ patients treated with efgartigimod spent a substantially greater percentage of time in response in ADAPT based on at least a 5-point change in QMG compared to the placebo group (44 % versus 13 % respectively, p = 0.0034). Analyses based on a 3-point change in MG-ADL in ADAPT showed the percentage of time in response was nearly double for efgartigimod versus placebo (59 % versus 30 % respectively, p = 0.010). These trends were also maintained using different response definitions, as well as in patients with and without prior immune therapy exposure and by time from diagnosis (<7 years versus ≥7 years). CONCLUSIONS: The clinical benefit of efgartigimod was sustained over repeat treatment cycles and maintained over the long term. Response to treatment was consistent regardless of response definition and was repeated in different patient subgroups. Overall, the results of this analysis indicate that efgartigimod is an effective therapeutic option, demonstrating a robust benefit among AChR-Ab+ patients with gMG.

5.
J Neurol Sci ; 458: 122907, 2024 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-38309251

RESUMEN

INTRODUCTION: Glucocorticoids (GCs) are associated with multiple toxicities that have substantial impact on patients. We conducted qualitative interviews with patients to identify the toxicities that are most relevant from their perspective, with the goal of creating a patient-reported companion measure to the Glucocorticoid Toxicity Index (GTI), a clinician-facing instrument. METHODS: Thirty-one patients with recent or current GC use participated in concept elicitation interviews. Participants received GC treatment for myasthenia gravis, chronic inflammatory demyelinating polyradiculoneuropathy, vasculitis, or systemic lupus erythematosus. Transcripts were coded following a thematic analysis approach. RESULTS: Participants reported more than 100 toxicities they believed to be associated with their GC medications. Common toxicities included weight gain (87%), increased appetite (84%), insomnia/sleep problems (77%), cognitive impairment/brain fog (71%), easy bruising (68%), anxiety (65%), irritability/short temper (65%), and osteoporosis (39%). These toxicities often centered on self-esteem, neuropsychiatric effects, skin toxicities, and musculoskeletal function. They can be categorized into domains such emphasizing neuropsychiatric, metabolic/endocrine, musculoskeletal, and dermatological effects, highlighting aspects of GC toxicity that patients are uniquely positioned to appreciate and report. CONCLUSION: Our results confirm that the toxicities associated with GCs are pervasive and diverse, with substantial impact on patients' lives. These data will be used to inform the development of a patient-reported outcome measure assessing GC toxicity. This patient-reported instrument will be designed to complement the clinician-reported GTI, facilitating a more detailed understanding of the nuances of change in GC toxicity.


Asunto(s)
Lupus Eritematoso Sistémico , Vasculitis , Humanos , Glucocorticoides/uso terapéutico , Medición de Resultados Informados por el Paciente
6.
J Neurol ; 270(4): 2096-2105, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-36598575

RESUMEN

There are substantial disease and health-related quality-of-life (HRQoL) burdens for many patients with myasthenia gravis (MG), especially for those whose disease symptoms are not well controlled. HRQoL measures such as the Myasthenia Gravis Quality of Life 15-item revised (MG-QOL15r) and EuroQoL 5-Dimensions 5-Levels (EQ-5D-5L) are vital for evaluating the clinical benefit of therapeutic interventions in patients with MG, as they assess the burden of disease and the effectiveness of treatment, as perceived by patients. The phase 3 ADAPT study (NCT03669588) demonstrated that efgartigimod-a novel neonatal Fc receptor inhibitor-was well tolerated and that acetylcholine receptor antibody-positive (AChR-Ab+) participants who received efgartigimod had statistically significant improvements in MG-specific clinical scale scores. The ancillary data reported here, which cover an additional treatment cycle, show that these participants had similar significant improvements in HRQoL measures, the MG-QOL15r and EQ-5D-5L utility and visual analog scales, and that these improvements were maintained in the second treatment cycle. Positive effects on HRQoL were rapid, seen as early as the first week of treatment in both treatment cycles, and maintained for up to 4 weeks in the follow-up-only portion of treatment cycles. The pattern of improvements in HRQoL paralleled changes in immunoglobulin G level, and correlational analyses show that improvements were consistent across HRQoL measures and with clinical efficacy measures in the ADAPT study. The substantial and durable improvements in HRQoL end points in this study demonstrate the broader benefit of treatment with efgartigimod beyond relief of immediate signs and symptoms of gMG.


Asunto(s)
Miastenia Gravis , Calidad de Vida , Recién Nacido , Humanos , Miastenia Gravis/tratamiento farmacológico , Miastenia Gravis/diagnóstico , Receptores Colinérgicos , Resultado del Tratamiento , Autoanticuerpos
7.
J Neurol Sci ; 443: 120480, 2022 12 15.
Artículo en Inglés | MEDLINE | ID: mdl-36347174

RESUMEN

OBJECTIVE: To evaluate real-world utilization patterns of intravenous immunoglobulin (IVIg) among patients with generalized myasthenia gravis (gMG) over 3 years post-IVIg initiation. METHODS: Patients with gMG who initiated IVIg treatment were identified from a United States claims database (Symphony Health's Integrated Dataverse [IDV]®, January 1, 2014 - December 31, 2019). The frequency of subsequent IVIg treatment and associated cost during the year post-IVIg initiation were analyzed. Usage patterns of IVIg and concomitant gMG treatments during the year preceding and 3 years post-IVIg initiation were compared. RESULTS: Among 1225 patients with gMG who initiated IVIg treatment, 706 patients (57.6%) received 1 to 5 IVIg treatment courses (intermittent IVIg users), and 519 patients (42.4%) received ≥6 IVIg treatment courses (chronic IVIg users) within the subsequent year. Mean annual medical cost per patient was nearly 2.5-fold higher for chronic vs. intermittent IVIg users ($161,478 vs. $64,888, p < 0.001). The proportion of patients using corticosteroids and nonsteroidal immunosuppressive treatments (NSISTs) was not reduced over the 3-year follow-up period following IVIg initiation, even for patients who continued annual chronic IVIg for 3 consecutive years post-initiation. CONCLUSIONS: Nearly half of patients with gMG received chronic and multiple IVIg treatment courses within the first year once initiating IVIg treatment, indicating higher usage than expected. For all IVIg initiators, the proportion of patients using corticosteroids and NSISTs did not decrease over 3 years despite IVIg initiation.


Asunto(s)
Inmunoglobulinas Intravenosas , Miastenia Gravis , Adulto , Humanos , Estados Unidos , Inmunoglobulinas Intravenosas/uso terapéutico , Miastenia Gravis/tratamiento farmacológico , Inmunosupresores
8.
Autoimmunity ; 55(8): 620-631, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-36036539

RESUMEN

Antagonism of the neonatal Fc receptor (FcRn) by efgartigimod has been studied in several autoimmune diseases mediated by immunoglobulin G (IgG) as a therapeutic approach to remove pathogenic IgGs. Whereas reduction of pathogenic titres has demonstrated efficacy in multiple autoimmune diseases, reducing total IgG could potentially increase infection risk in patients receiving FcRn antagonists. The objective of this study was to analyse the effect of FcRn antagonism with efgartigimod on existing protective antibody titres and the ability to mount an immune response after vaccine challenge. Serum levels of total IgG and protective antibodies against tetanus toxoid (TT), varicella zoster virus (VZV), and pneumococcal capsular polysaccharide (PCP) were measured in all patients enrolled in an open-label trial of efgartigimod for the treatment of pemphigus. Vaccine specific-responses were assessed by measuring changes in IgG titres in patients with generalised myasthenia gravis (gMG) who were treated with efgartigimod and who received influenza, pneumococcal, or coronavirus disease 2019 (COVID-19) vaccines during participation in the double-blind trial ADAPT or open-label extension, ADAPT+ (n = 17). FcRn antagonism reduced levels of protective anti-TT, anti-VZV, and anti-PCP antibodies and total IgG to a similar extent; anti-TT and anti-VZV titres remained above minimally protective thresholds for the majority of patients, (10/12) 83% and (14/15) 93% respectively. Protective antibodies returned to baseline values upon treatment cessation. Antigen-specific IgG responses to influenza, pneumococcal, and COVID-19 immunisation were detected in patients with gMG who received these vaccines while undergoing therapy with efgartigimod. In conclusion, FcRn antagonism with efgartigimod did not hamper generation of IgG responses but did transiently reduce IgG titres of all specificities.


Asunto(s)
COVID-19 , Gripe Humana , Miastenia Gravis , Pénfigo , Humanos , Inmunoglobulina G , Recién Nacido , Polisacáridos , Ensayos Clínicos Controlados Aleatorios como Asunto , Toxoide Tetánico/uso terapéutico
9.
J Neurol Sci ; 437: 120268, 2022 06 15.
Artículo en Inglés | MEDLINE | ID: mdl-35486970

RESUMEN

BACKGROUND/OBJECTIVES: While the clinical manifestations of myasthenia gravis (MG) are well understood, its humanistic impact is not. The objective of this systematic literature review (SLR) was to provide a comprehensive understanding of the humanistic burden of MG with regards to psychological symptoms and health-related quality of life (HRQoL) according to patients and caregivers. METHODS: A systematic search was conducted on December 27, 2019, in MEDLINE and Embase to identify English-language studies that were published from January 1, 2009-December 27, 2019 and presented relevant information on the humanistic burden among adults with MG and their caregivers. Title/abstract and full-text screening was performed by two investigators, with any discrepancies resolved by a third investigator. RESULTS: Sixty-seven publications were included in the SLR. Compared with the general population, patients with MG experienced worse HRQoL. Studies reporting on psychological symptoms of MG, including depression, anxiety, fatigue, and sleep, were heterogeneous in terms of the scales and instruments used to assess patients, as well as the patient populations themselves. However, in general those with more severe symptoms and hospitalization days had worse depression and anxiety, and fatigue and sleep improved with disease remission and/or improvement. Scores were worse for females compared with males and where evaluated, HRQoL scores generally improved following treatment. CONCLUSION: While the literature demonstrates that symptoms associated with MG get better with disease improvement and remission, additional options in efficacious therapy that adequately address the disease-related symptoms and also improve HRQoL may contribute to beneficial outcomes in a greater number of patients with MG.


Asunto(s)
Miastenia Gravis , Calidad de Vida , Adulto , Ansiedad , Cuidadores/psicología , Fatiga/etiología , Femenino , Humanos , Masculino , Miastenia Gravis/terapia
10.
Front Immunol ; 13: 892534, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35757719

RESUMEN

Serum albumin (SA), the most abundant soluble protein in the body, maintains plasma oncotic pressure and regulates the distribution of vascular fluid and has a range of other important functions. The goals of this review are to expand clinical knowledge regarding the functions of SA, elucidate effects of dysregulated SA concentration, and discuss the clinical relevance of hypoalbuminemia resulting from various diseases. We discuss potential repercussions of SA dysregulation on cholesterol levels, liver function, and other processes that rely on its homeostasis, as decreased SA concentration has been shown to be associated with increased risk for cardiovascular disease, hyperlipidemia, and mortality. We describe the anti-inflammatory and antioxidant properties of SA, as well as its ability to bind and transport a plethora of endogenous and exogenous molecules. SA is the primary serum protein involved in binding and transport of drugs and as such has the potential to affect, or be affected by, certain medications. Of current relevance are antibody-based inhibitors of the neonatal Fc receptor (FcRn), several of which are under clinical development to treat immunoglobulin G (IgG)-mediated autoimmune disorders; some have been shown to decrease SA concentration. FcRn acts as a homeostatic regulator of SA by rescuing it, as well as IgG, from intracellular degradation via a common cellular recycling mechanism. Greater clinical understanding of the multifunctional nature of SA and the potential clinical impact of decreased SA are needed; in particular, the potential for certain treatments to reduce SA concentration, which may affect efficacy and toxicity of medications and disease progression.


Asunto(s)
Enfermedades Autoinmunes , Inmunoglobulina G , Enfermedades Autoinmunes/tratamiento farmacológico , Homeostasis , Humanos , Inmunoglobulina G/metabolismo , Recién Nacido , Receptores Fc , Albúmina Sérica/metabolismo
11.
Dement Geriatr Cogn Disord ; 31(1): 7-19, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21109739

RESUMEN

BACKGROUND: The development of better treatments for brain diseases of the elderly will necessitate more sensitive and efficient means of repeatedly assessing an individual's neurocognitive status. AIM: To illustrate the development of an assessment combining episodic memory and working memory tasks with simultaneous electroencephalography and evoked potential (EP) brain function measures. METHODS: Data from matched groups of elderly subjects with mildly impaired episodic verbal memory on neuropsychological tests and those with no objective signs of impairment were used for scale development. An exploratory multivariate divergence analysis selected task performance and neurophysiological variables that best recognized impairment. Discriminant validity was then initially assessed on separate impaired and unimpaired groups. RESULTS: Decreased response accuracy and parietal late positive component EP amplitude in the episodic memory task best characterized impaired subjects. Sensitivity in recognizing impairment in the validation analysis was 89% with 79% specificity (area under the curve = 0.94). Retest reliability was 0.89 for the unimpaired and 0.74 for the impaired validation groups. CONCLUSION: These promising initial results suggest that with further refinement and testing, an assessment combining cognitive task performance with simultaneous neurofunctional measures could eventually provide an important benefit for clinicians and researchers.


Asunto(s)
Trastornos del Conocimiento/fisiopatología , Trastornos del Conocimiento/psicología , Cognición/fisiología , Electroencefalografía , Pruebas Neuropsicológicas , Adulto , Anciano , Envejecimiento/psicología , Escolaridad , Potenciales Evocados/fisiología , Femenino , Humanos , Individualidad , Modelos Lineales , Masculino , Memoria/fisiología , Persona de Mediana Edad , Desempeño Psicomotor/fisiología , Curva ROC , Reproducibilidad de los Resultados , Adulto Joven
12.
Front Neurol ; 12: 809999, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-35115997

RESUMEN

INTRODUCTION: Limited evidence exists for healthcare resource utilization (HCRU) and costs associated with generalized myasthenia gravis (gMG), a rare autoimmune disorder, for adults in the United States. METHODS: Adults with ≥1 diagnostic claim for MG between 2014 and 2019 were identified using Symphony Health's Integrated Dataverse®. Using a novel algorithm, HCRU and costs over 12 months following index dates were evaluated for patients with gMG including those with exacerbation events. For patients who experienced crisis events, HCRU and costs were analyzed during the 36 months preceding, during, and 12 months following the events. RESULTS: Mean HCRU and costs were higher for newly diagnosed patients compared with previously diagnosed patients (hospitalizations: 0.46 vs. 0.34; all-cause costs: $26,419.20 vs. $24,941.47; direct costs for gMG treatments: $9,890.37 vs. $9,186.47) and further increased for patients with exacerbation events (hospitalizations: 0.72; all-cause costs: $43,734.15; direct costs for gMG treatments: $21,550.02). For patients who experienced crisis events, HCRU and costs markedly increased during the 12 months immediately before the crisis event (hospitalizations: 1.35; all-cause costs: $49,236.68) compared with the 2 preceding years and increased further during the 12 months following the crisis index date (hospitalizations: 2.78; all-cause costs: $173,956.99). Cost increases were, in large part, attributed to treatments received. DISCUSSION: New diagnosis, exacerbation, and crisis events were drivers of HCRU and cost for patients with gMG. Particularly, high costs of gMG-specific medications associated with intervention for exacerbation and crisis events contributed to increased all-cause costs.

13.
J Neurol Sci ; 408: 116497, 2020 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-31765922

RESUMEN

Chronic inflammatory demyelinating polyneuropathy (CIDP) is an acquired neurological disorder characterized clinically by weakness and impaired sensory function evolving over 2 months or more, loss or significant decrease in deep tendon reflexes, and by electrophysiological evidence of peripheral nerve demyelination. Expeditious diagnosis and treatment of CIDP early in the disease course is critical such that irreversible disability can be avoided. Intravenous immunoglobulin (IVIG) is one first-line and maintenance therapy option for CIDP. The US Food & Drug Administration's (FDA's) approval of subcutaneous immunoglobulin (SCIG) in 2018 provides patients with CIDP more treatment options for maintenance therapy. The different options for administration of IG treatment create the need for information to assist clinicians and patients in choosing the optimal therapeutic approach. Considerations for pharmacokinetics, administration procedures, adverse events, patient variables, and cost will all be discussed in this article.


Asunto(s)
Inmunoglobulinas Intravenosas/administración & dosificación , Infusiones Subcutáneas/métodos , Polirradiculoneuropatía Crónica Inflamatoria Desmielinizante/tratamiento farmacológico , Ensayos Clínicos Controlados Aleatorios como Asunto/métodos , Humanos , Inmunoglobulinas Intravenosas/farmacocinética , Inyecciones Subcutáneas , Polirradiculoneuropatía Crónica Inflamatoria Desmielinizante/diagnóstico , Polirradiculoneuropatía Crónica Inflamatoria Desmielinizante/metabolismo
14.
J Neurol Sci ; 397: 84-91, 2019 02 15.
Artículo en Inglés | MEDLINE | ID: mdl-30597419

RESUMEN

To evaluate how neurologists make decisions regarding chronic inflammatory demyelinating polyneuropathy (CIDP), we conducted a cross-sectional quantitative survey of 100 community neurologists in the United States. Only 13% cited using the European Federation of Neurological Societies/Peripheral Nerve Society guideline. In addition, variability in treatment approaches existed regarding the dose of IVIg used, the length of IVIg therapy before determining response, the outcome measures used to determine IVIg response, and the protocol for weaning off therapy. Forty-three percent reported giving doses that were lower than the recommended IVIg loading dose for CIDP. Many reported giving nonspecific patient education about the rationale of IVIg use and treatment duration. The finding that approximately half of community neurologists endorsed electrodiagnostic criteria that do not support CIDP diagnosis indicated difficulties relying heavily upon neurophysiologic studies in diagnostic guidelines. More education on CIDP diagnosis and treatment and a clear, actionable, clinically focused guideline would enhance best practices, particularly in the midst of high information flow and multiple guidelines.


Asunto(s)
Inmunoglobulinas Intravenosas/uso terapéutico , Neurología , Polirradiculoneuropatía Crónica Inflamatoria Desmielinizante/tratamiento farmacológico , Pautas de la Práctica en Medicina , Estudios Transversales , Encuestas de Atención de la Salud , Humanos , Neurólogos , Polirradiculoneuropatía Crónica Inflamatoria Desmielinizante/diagnóstico , Estados Unidos
15.
J Neurol Sci ; 406: 116428, 2019 Nov 15.
Artículo en Inglés | MEDLINE | ID: mdl-31574325

RESUMEN

Since the death of Chief Opechankanough >350 years ago, the myasthenia gravis (MG) community has gained extensive knowledge about MG and how to treat it. This review highlights key milestones in the history of treatment and discusses the current "golden age" of clinical trials. Although originally thought by many clinicians to be a disorder of hysteria and fluctuating weakness without observable cause, MG is one the most understood autoimmune neurologic disorders. However, studying it in clinical trials has been challenging due to the fluctuating nature of the medical condition which impacts MG clinical outcomes. Clinical trials must also account for the possibility of a placebo effect. Because MG is a rare incurable autoimmune disorder, it limits the number of potential patients available to participate in clinical trials. In the last 15 years, however, significant progress has been made with MG randomized clinical trials, resulting in a new drug (eculizumab) for physicians' treatment repertoire and an old technique (thymectomy) confirmed effective for MG. Some of the therapies (eg, thymectomy, corticosteroids, plasma exchange, and intravenous immunoglobulin [IVIg]) have survived the test of time. Others (eg, eculizumab and neonatal Fc receptor inhibitor) are novel and hold promise.


Asunto(s)
Ensayos Clínicos como Asunto/métodos , Miastenia Gravis/epidemiología , Miastenia Gravis/terapia , Anticuerpos Monoclonales Humanizados/uso terapéutico , Inactivadores del Complemento/uso terapéutico , Humanos , Inmunoglobulinas Intravenosas/uso terapéutico , Miastenia Gravis/diagnóstico , Intercambio Plasmático/métodos , Timectomía/métodos
16.
Amyotroph Lateral Scler ; 9(5): 266-72, 2008 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-18608103

RESUMEN

Our objective was to determine the effect of creatine monohydrate on disease progression in patients with amyotrophic lateral sclerosis (ALS). One hundred and seven patients with the diagnosis of probable or definite ALS, of less than five years duration from symptom onset, were randomized to either treatment with daily creatine monohydrate (5 g/d) or placebo. In this multicenter, double-blinded study we followed changes in disease progression: using quantitative measures of strength via maximal isometric voluntary contraction, forced vital capacity, ALSFRS, quality of life, fatigue and survival. Patients were followed for nine months. The results showed that creatine monohydrate did not significantly improve motor, respiratory or functional capacity in this patient population. The drug was well tolerated and the study groups well balanced, especially considering the absence of forced vital capacity criteria for entrance into the study. There was a trend toward improved survival in patients taking daily creatine monohydrate and this was identical to the trend seen in another recently published report of creatine in ALS patients 1. In conclusion, creatine monohydrate (5 g/d) did not have an obvious benefit on the multiple markers of disease progression measured over nine months. We measured fatigue during isometric contraction and found no significant improvement despite anecdotal patient reports prior to and during the study. The trend toward improved survival was also found in another recently completed blinded trial using creatine monohydrate. Further investigation on the possible survival benefit of creatine in this patient population is ongoing.


Asunto(s)
Esclerosis Amiotrófica Lateral , Creatina/farmacología , Creatina/uso terapéutico , Fatiga Muscular/efectos de los fármacos , Fuerza Muscular/efectos de los fármacos , Capacidad Vital/efectos de los fármacos , Anciano , Esclerosis Amiotrófica Lateral/tratamiento farmacológico , Esclerosis Amiotrófica Lateral/fisiopatología , Biomarcadores/metabolismo , Creatina/orina , Progresión de la Enfermedad , Método Doble Ciego , Femenino , Humanos , Masculino , Persona de Mediana Edad , Placebos , Calidad de Vida , Tasa de Supervivencia , Resultado del Tratamiento
17.
J Palliat Med ; 11(3): 470-5, 2008 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-18363490

RESUMEN

INTRODUCTION: The concept of hope in palliative care is an important and neglected area of research. Amyotrophic lateral sclerosis (ALS), a progressive degenerative motor neuron disease, offers an excellent opportunity to study this construct as the illness is virtually always fatal. Our research explored the meaning of hope in individuals with ALS. PATIENTS AND METHODS: Sixteen patients (13 males and 3 females; mean age, 54) were interviewed during routine clinic visits to the Forbes Norris MDA/ALS Research Center at California Pacific Medical Center, San Francisco. The Forced Vital Capacity (FVC) Scale and the ALS Functional Rating Scale-Revised (ALSFRS-R) and a Hope Scale were administered. Themes of hope were identified and categorized. RESULTS: Hope categories included: (1) hope for a cure, (2) social support, (3) search for information, (4) spiritual beliefs, (5) limiting the impact, (6) adapting to changing capacities, (7) living in the moment, and (8) self-transcendence. The relationship between hope and the FVC value and individual as well as overall ALSFRS-R ratings were examined, and none were significant. DISCUSSION: Individuals varied in their capacity to cope with their illness unrelated to their physical ability. Themes ranged from a primary focus on the self to one of heightened concern for others, on continuum from narcissism to altruism. Respondents cited using a number of categories of hope (mean=5). CONCLUSION: Patients draw upon a variety of mechanisms to sustain hope when facing chronic disease, including hope for a cure, support from others, seeking information, spiritual beliefs, limiting the impact, adapting to changing capacities, living in the moment, and transcending the self. The palliative care team can play an important role by promoting discussions regarding hopefulness and its many forms in individuals with ALS.


Asunto(s)
Adaptación Psicológica , Esclerosis Amiotrófica Lateral/psicología , Cuidados Paliativos/psicología , Adulto , Anciano , Esclerosis Amiotrófica Lateral/terapia , Actitud , Femenino , Humanos , Entrevistas como Asunto , Masculino , Persona de Mediana Edad , Moral , San Francisco , Apoyo Social , Espiritualidad
18.
Brain Behav ; 8(3): e00932, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-29541543

RESUMEN

Introduction: We explored adherence to the European Federation of Neurological Societies/Peripheral Nerve Society (EFNS/PNS) guidelines for the diagnosis and treatment of chronic inflammatory demyelinating polyneuropathy (CIDP) by reviewing data from a specialty pharmacy database. Materials and Methods: Clinical and electrophysiologic data were reviewed for 65 consecutive patients treated with intravenous immunoglobulin (IVIG) for CIDP. Three neuromuscular neurologists independently classified cases according to EFNS/PNS criteria as (1) fulfilling CIDP criteria; (2) non-CIDP (neither clinical nor electrophysiologic criteria met); or (3) unknown (insufficient information). Results: Patients were treated by 31 different community neurologists in 14 states. Only seven patients (11%) met clinical and electrodiagnostic CIDP criteria. The remainder (89%) did not have CIDP (49%) or were unknown (40%). IVIG mean induction dose was 1.25 g/kg, mean maintenance dose 0.79 g/kg, and mean interval between infusions was 23 days. Conclusions: Adherence to EFNS/PNS CIDP diagnostic and treatment guidelines in the general neurologic community was poor. Improved education and awareness of widely available CIDP guidelines are recommended.


Asunto(s)
Electrodiagnóstico/métodos , Inmunoglobulinas Intravenosas/uso terapéutico , Polirradiculoneuropatía Crónica Inflamatoria Desmielinizante/diagnóstico , Polirradiculoneuropatía Crónica Inflamatoria Desmielinizante/terapia , Biopsia , Bases de Datos Factuales , Fenómenos Electrofisiológicos/fisiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Nervios Periféricos/patología , Nervios Periféricos/fisiopatología , Polirradiculoneuropatía Crónica Inflamatoria Desmielinizante/fisiopatología , Estudios Retrospectivos
19.
Artículo en Inglés | MEDLINE | ID: mdl-29205054

RESUMEN

OBJECTIVE: The aim of this Symposium was to develop a consensus based, bulbar assessment protocol for implementation within NEALS clinics. METHODS: A one-day symposium, held in April 2017, was organized into Speech and Swallowing sections to establish summary recommendations for the assessment of bulbar dysfunction within each group. RESULTS: Summary recommendations included speech referrals and AAC evaluations at initial visit, CNS-BFS, maximum sustained phonation, and speaking rate. Dysarthria evaluation included the speech subsystem involvement of respiration, phonation, resonance, and articulation. Specific recommendations for swallowing were established for each of the following domains: dietary/oral intake, airway defense physiologic capacity, swallow safety screen, patient-reported swallow-related outcomes, oral sensorimotor exam, and pulmonary function. Practice parameters focused upon patient education and unresolved questions included the use of videofluoscopy, monitoring diet progression, and swallow safety screening. CONCLUSIONS: The working goal is to establish a clinical bulbar protocol, designed to be incorporated within ALS clinics and ultimately to formulate a best practice set of bulbar ALS guidelines, available for implementation throughout the international ALS community.


Asunto(s)
Esclerosis Amiotrófica Lateral/complicaciones , Trastornos de Deglución/diagnóstico , Trastornos de Deglución/etiología , Disartria/diagnóstico , Disartria/etiología , Trastornos del Habla/etiología , Progresión de la Enfermedad , Femenino , Humanos , Masculino , Estudios Retrospectivos , Índice de Severidad de la Enfermedad , Trastornos del Habla/diagnóstico
20.
J Neuroimmunol ; 179(1-2): 87-93, 2006 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-16857270

RESUMEN

Recent studies suggest that monocyte activation may play a role in ALS pathogenesis. Therefore, monocyte CCR2, the receptor for monocyte chemoattractant protein-1 (MCP-1), and plasma levels of MCP-1 were measured in 42 sALS patients, 38 healthy and 34 age-related macular degeneration (ARMD) controls. MCP-1 was elevated in both sALS and ARMD patients, but CCR2 levels were significantly decreased on sALS but not on ARMD monocytes. Loss of monocyte CCR2 expression was inversely correlated with degree of monocyte/macrophage activation in sALS and this decrease was unlikely due to receptor down-regulation given the ARMD results. Defective monocyte/macrophages may play an active role in sALS.


Asunto(s)
Esclerosis Amiotrófica Lateral/metabolismo , Monocitos/metabolismo , Receptores de Quimiocina/biosíntesis , Anciano , Esclerosis Amiotrófica Lateral/tratamiento farmacológico , Antiinflamatorios no Esteroideos/uso terapéutico , Biomarcadores/sangre , Quimiocina CCL2/sangre , Quimioterapia Combinada , Ensayo de Inmunoadsorción Enzimática , Femenino , Citometría de Flujo , Humanos , Activación de Macrófagos/inmunología , Masculino , Persona de Mediana Edad , Fármacos Neuroprotectores/uso terapéutico , Receptores CCR2 , Riluzol/uso terapéutico
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