Associations of motor neuron disease research productivity and socioeconomic factors in Southeast Asia: a bibliometric analysis.

BACKGROUND: Scientific productivity on motor neuron disease (MND) research has been hypothesized to be low in Southeast Asia (SEA). OBJECTIVE: To investigate the scientific productivity of SEA countries on MND and the associations between research metric indices and various country-specific socioeconomic parameters. METHODS: We searched electronic databases for relevant articles from SEA on MND from the earliest indexed record to June 30, 2020. We obtained the following research productivity indices: bibliometric (number of publications in journals with impact factor (IF) and Scopus citations) and altmetric indices (PlumX metrics). We also collected data from published literature and reliable sources on the following socioeconomic variables: population, gross domestic product (GDP), GDP per capita, %GDP allocated for research and development (R&D) and the number of neurologists per country. RESULTS: We included 196 articles that satisfied our inclusion criteria. Amyotrophic lateral sclerosis studies comprised the majority of the articles (n = 112; 57.1%). The top three countries in terms of the numbers of publications in journals with IF and in PlumX metrics were Singapore (n = 129), Malaysia (n = 26), and Thailand (n = 18). GDP per capita, %GDP for R&D and number of neurologists per one million population had strong positive correlations with the bibliometric and altmetric indices. CONCLUSIONS: This study highlights that although the scientific productivity of MND research in SEA has been low, it is continuously growing. This also emphasizes the imperative to improve economic indices and the number of neurologists in SEA to enhance scientific output on MND.

Associations of motor neuron disease research productivity and socioeconomic factors in Southeast Asia: a bibliometric analysis / Associações entre produtividade em pesquisa sobre doenças do neurônio motor e fatores socioeconômicos no sudeste asiático: uma análise bibliométrica

ABSTRACT Background: Scientific productivity on motor neuron disease (MND) research has been hypothesized to be low in Southeast Asia (SEA). Objective: To investigate the scientific productivity of SEA countries on MND and the associations between research metric indices and various country-specific socioeconomic parameters. Methods: We searched electronic databases for relevant articles from SEA on MND from the earliest indexed record to June 30, 2020. We obtained the following research productivity indices: bibliometric (number of publications in journals with impact factor (IF) and Scopus citations) and altmetric indices (PlumX metrics). We also collected data from published literature and reliable sources on the following socioeconomic variables: population, gross domestic product (GDP), GDP per capita, %GDP allocated for research and development (R&D) and the number of neurologists per country. Results: We included 196 articles that satisfied our inclusion criteria. Amyotrophic lateral sclerosis studies comprised the majority of the articles (n = 112; 57.1%). The top three countries in terms of the numbers of publications in journals with IF and in PlumX metrics were Singapore (n = 129), Malaysia (n = 26), and Thailand (n = 18). GDP per capita, %GDP for R&D and number of neurologists per one million population had strong positive correlations with the bibliometric and altmetric indices. Conclusions: This study highlights that although the scientific productivity of MND research in SEA has been low, it is continuously growing. This also emphasizes the imperative to improve economic indices and the number of neurologists in SEA to enhance scientific output on MND.

Resumo Antecedentes: A produtividade científica em pesquisa sobre doenças do neurônio motor (DNM) tem sido considerada baixa no sudeste asiático. Objetivo: Investigar a produtividade científica sobre DNM em países do sudeste asiático e as associações entre os índices métricos de pesquisa e vários parâmetros socioeconômicos específicos de cada país. Métodos: Foram consultadas bases de dados eletrônicas em busca de artigos relevantes sobre DNM provenientes do sudeste asiático, partindo do registro indexado mais antigo até 30 de junho de 2020. Obtivemos os seguintes índices de produtividade em pesquisa: bibliométrico (número de publicações em periódicos com fator de impacto (FI) e citações na base Scopus) e índices altmétricos (métrica PlumX). Também coletamos dados da literatura publicada e fontes confiáveis ​​sobre as seguintes variáveis ​​socioeconômicas: população, produto interno bruto (PIB), PIB per capita, % do PIB alocada para pesquisa e desenvolvimento (P & D) e o número de neurologistas por país. Resultados: Selecionamos 196 artigos que atenderam aos nossos critérios de inclusão. Estudos sobre esclerose lateral amiotrófica representaram a maioria dos artigos (n = 112; 57,1%). Os três principais países em termos de número de publicações em periódicos com FI e em métricas PlumX foram Cingapura (n = 129), Malásia (n = 26) e Tailândia (n = 18). O PIB per capita, a % do PIB para P & D e o número de neurologistas por um milhão de habitantes tiveram fortes correlações positivas com os índices bibliométricos e altmétricos. Conclusões: Embora a produtividade científica em pesquisa sobre DNM no sudeste asiático ainda seja baixa, este estudo mostra que ela vem crescendo continuamente. Isto também enfatiza a necessidade de melhorar os índices econômicos e o número de neurologistas na região para aumentar a produção científica sobre o assunto.

FIP1L1-PDGFRA-Positive Hypereosinophilia Presenting with Bilateral Extracranial Carotid Artery Aneurysms.

OBJECTIVE: To describe a case of an adult female Filipino with hypereosinophilia and bilateral carotid artery aneurysms who subsequently developed bilateral cerebral hemisphere strokes following aneurysm stenting. CASE DESCRIPTION: A 57-year-old female patient with persistent hypereosinophilia presented with progressively enlarging bilateral neck masses, revealed to be carotid artery aneurysms on computed tomography angiography. Following surgical exploration, she later developed right-sided hemiplegia, aphasia, and right hemianopia. Cranial computed tomography revealed infarcts on both middle cerebral artery territories. Bone marrow biopsy and fluorescent in situ hybridization revealed findings suggestive of hypereosinophilic syndrome. She was started on standard aspirin and statin therapy and was discharged sixteen days after the procedure. Partial improvement of neurologic deficits was noted two months later on follow up. Chemotherapy with imatinib was initiated. CONCLUSIONS: This patient's prothrombotic state from FIP1L1-PDGFRA-positive hypereosinophilia may have led to large carotid artery aneurysm formation and intramural thrombosis. This case demonstrates a possible and heretofore undocumented neurovascular sequela of hypereosinophilic syndrome.

Safety and Efficacy of Repeated Thrombolysis with Alteplase in Early Recurrent Ischemic Stroke: A Systematic Review.

BACKGROUND AND AIM: The current American Heart Association guidelines for the management of acute ischemic stroke advise against the use of intravenous (IV) alteplase in patients with recurrent stroke occurring within 90 days of their index event. Following these guidelines strictly, patients having early recurrent ischemic stroke would be unable to avail of this reperfusion strategy that has been proven to confer superior clinical outcomes. While some registry-based studies have demonstrated the safety of IV alteplase in this subgroup of patients, data on the repeated use of the drug are lacking. Thus, we aim to determine the safety and efficacy of repeated thrombolysis in patients with early recurrent ischemic strokes. METHODS: The following electronic databases were searched for relevant studies: the Cochrane Central Register for Controlled Trials by The Cochrane Library, MEDLINE by PubMed, Health Research and Development Information Network, Scopus, and ClinicalTrials.gov. Data on symptomatic intracranial hemorrhage, 90-day clinical outcomes, systemic hemorrhage and allergic reactionswere synthesized. RESULTS: Ten articles with 33 patients in total were included in our review. One patient developed symptomatic intracranial hemorrhage after the second reperfusion attempt and subsequently died from pneumonia. Another died from spontaneous rupture of previously unidentified infrarenal aortic aneurysm. Six of the 13 patients with available follow-up data had good clinical outcomes (Modified Rankin Score 0-2). There were no allergic reactions and other drug-related adverse events noted. CONCLUSIONS: Repeated IV alteplase can be safe and efficacious in patients who have early recurrent ischemic stroke. Larger studies, trials, or registry-based data are needed to ascertain the encouraging findings of our review.