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1.
Heliyon ; 9(12): e22788, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38107317

RESUMO

The rapidly increasing scientific research on the stock market and the visible impact of media on equity prices are nowadays in limelight. To a greater extent, causal analysis can reckon the sentimental effect of the broadcasted content on stock valuation. We propose a four stage model to detect the direction of information flow between the news sentiment and stock price. Whilst web scraping explores and extracts the news datasets, the modified VADER algorithm finds the sentiments of the aired media. The associational causal analysis determines the cause effect between the news and stock price. The results suggest that the non parametric Shannon and Renyi's entropy approach supersedes the Granger test, a parametric study which is constrained to Gaussian time series with linear causation. Since Renyi's Entropy can perfectly identify the deluge of information during quick leaps, it is regarded as a beneficial formulation for investors when evaluating stocks with a fewer number of news mentions. The impact of news during the COVID-19 pandemic over the pharmaceutical sector was also done. The study infers an explicit information flow and direction of causality between news sentiment and stock price movement, which can be used to devise future investment and consumption strategies.

2.
Br J Neurosurg ; 37(3): 329-333, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32202165

RESUMO

Benign cysts within the pure aqueductal region are a rare entity. Their critical location within the ventricular system presents a risk of potentially catastrophic outcomes. We present a case of a 68-year-old female who was transferred to our unit with an acute obstructive triventricular hydrocephalus caused by a benign cyst within the cerebral aqueduct. She became unconscious and had an urgent endoscopic third ventriculostomy (ETV). Post-operatively, the patient was recovering well but then developed a sudden onset severe headache accompanied by vomiting. Imaging revealed intracystic haemorrhage with expansion of lesion but there was no obstructive hydrocephalus due to CSF diversion performed 9 d prior. She was treated conservatively and continued to improve.


Assuntos
Cistos , Hidrocefalia , Neuroendoscopia , Terceiro Ventrículo , Feminino , Humanos , Idoso , Aqueduto do Mesencéfalo/diagnóstico por imagem , Aqueduto do Mesencéfalo/cirurgia , Terceiro Ventrículo/cirurgia , Ventrículos Cerebrais/cirurgia , Ventriculostomia/efeitos adversos , Ventriculostomia/métodos , Hidrocefalia/diagnóstico por imagem , Hidrocefalia/cirurgia , Cistos/cirurgia , Resultado do Tratamento , Neuroendoscopia/efeitos adversos
3.
Blood Adv ; 5(4): 975-983, 2021 02 23.
Artigo em Inglês | MEDLINE | ID: mdl-33576783

RESUMO

We compared outcomes in 603 patients with myelodysplastic syndrome (MDS) after HLA-haploidentical relative (n = 176) and HLA-matched unrelated (n = 427) donor hematopoietic cell transplantation (HCT) from 2012 to 2017, using the Center for International Blood and Marrow Transplant Research database. All transplantations used reduced-intensity conditioning regimens. Total-body irradiation plus cyclophosphamide and fludarabine was the predominant regimen for HLA-haploidentical relative donor HCT, and graft-versus-host disease (GVHD) prophylaxis was uniformly posttransplantation cyclophosphamide, calcineurin inhibitor, and mycophenolate. Fludarabine with busulfan or melphalan was the predominant regimen for HLA-matched unrelated donor HCT, and GVHD prophylaxis was calcineurin inhibitor with mycophenolate or methotrexate. Results of multivariate analysis revealed higher relapse (hazard ratio [HR], 1.56; P = .0055; 2-year relapse rate, 48% vs 33%) and lower disease-free survival (DFS) rates after HLA-haploidentical relative donor HCT (HR, 1.29; P = .042; 2-year DFS, 29% vs 36%). However, overall survival (OS) rates did not differ between donor type (HR, 0.94; P = .65; 2-year OS, 46% for HLA-haploidentical and 44% for HLA-matched unrelated donor HCT) because of mortality associated with chronic GVHD. Acute grade 2 to 4 GVHD (HR, 0.44; P < .0001) and chronic GVHD (HR, 0.36; P < .0001) were lower after HLA-haploidentical relative donor HCT. By 2 years, probability of death resulting from chronic GVHD was lower after HLA-haploidentical relative compared with HLA-matched unrelated donor HCT (6% vs 21%), negating any potential survival advantage from better relapse control. Both donor types extend access to transplantation for patients with MDS; strategies for better relapse control are desirable for HLA-haploidentical relative donor HCT, and effective GVHD prophylaxis regimens are needed for unrelated donor HCT.


Assuntos
Doença Enxerto-Hospedeiro , Síndromes Mielodisplásicas , Teste de Histocompatibilidade , Humanos , Síndromes Mielodisplásicas/terapia , Condicionamento Pré-Transplante , Doadores não Relacionados
4.
J Clin Neurosci ; 75: 218-220, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-32249175

RESUMO

Pneumocephalus describes the presence of air within the cranial cavity and is often self-limiting. Tension pneumocephalus is a neurosurgical emergency manifested by headaches, seizures, reduced consciousness and even death resulting from raised intracranial pressure. Differentiating both entities clinically is often challenging but crucial. We present a case involving a sixty-year-old male who was transferred to our unit after he collapsed while undergoing rehabilitation. The patient had undergone a combined bifrontal craniotomy and transnasal endoscopic resection of recurrent sinonasal adenocarcinoma with anterior skull base involvement eight days prior. Imaging demonstrated the classic Mt. Fuji sign and a diagnosis of tension pneumocephalus was formed. The patient proceeded for definitive management which included a multi-layered repair of the anterior skull base. The three mechanisms that propose the development of tension pneumocephalus include the ball-valve mechanism, the inverted soda-bottle effect and rarely, infection from gas forming organisms. A review of current literature on PubMed/MEDLINE revealed tension pneumocephalus after skull base surgery to be a rare entity with only eleven cases reported. Most patients achieved complete recovery of symptoms post-treatment. Clinicians should recognise tension pneumocephalus as a potential complication after skull base surgery. Accurate diagnosis requires appreciation of imaging features and a high index of suspicion. Prompt management is imperative to prevent possible devastating outcomes.


Assuntos
Pneumocefalia/diagnóstico por imagem , Pneumocefalia/etiologia , Complicações Pós-Operatórias/diagnóstico por imagem , Complicações Pós-Operatórias/etiologia , Base do Crânio/diagnóstico por imagem , Base do Crânio/cirurgia , Craniotomia/efeitos adversos , Humanos , Masculino , Pessoa de Meia-Idade , Neuroendoscopia/efeitos adversos , Procedimentos Neurocirúrgicos/efeitos adversos
5.
J Card Fail ; 24(12): 842-848, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29885494

RESUMO

BACKGROUND: Long-term data on outcomes of participants hospitalized with heart failure (HF) from low- and middle-income countries are limited. METHODS AND RESULTS: In the Trivandrum Heart Failure Registry (THFR) in 2013, 1205 participants from 18 hospitals in Trivandrum, India, were enrolled. Data were collected on demographics, clinical presentation, treatment, and outcomes. We performed survival analyses, compared groups and evaluated the association between heart failure (HF) type and mortality, adjusting for covariates that predicted mortality in a global HF risk score. The mean (standard deviation) age of participants was 61.2 (13.7) years. Ischemic heart disease was the most common cause (72%). The in-hospital mortality rate was higher for participants with HF with reduced ejection fraction (HFrEF; 9.7%) compared with those with HF with preserved ejection fraction (HFpEF; 4.8%; P = .003). After 3 years, 540 (44.8%) participants had died. The all-cause mortality rate was lower for participants with HFpEF (40.8%) compared with HFrEF (46.2%; P = .049). In multivariable models, older age (hazard ratio [HR] 1.24 per decade, 95% confidence interval [CI] 1.15-1.33), New York Heart Association functional class IV symptoms (HR 2.80, 95% CI 1.43-5.48), and higher serum creatinine (HR 1.12 per mg/dL, 95% CI 1.04-1.22) were associated with all-cause mortality. CONCLUSIONS: Participants with HF in the THFR have high 3-year all-cause mortality. Targeted hospital-based quality improvement initiatives are needed to improve survival during and after hospitalization for HF.


Assuntos
Insuficiência Cardíaca/epidemiologia , Hospitalização/tendências , Hospitais/estatística & dados numéricos , Sistema de Registros , Volume Sistólico/fisiologia , Causas de Morte/tendências , Feminino , Seguimentos , Insuficiência Cardíaca/fisiopatologia , Insuficiência Cardíaca/terapia , Mortalidade Hospitalar/tendências , Humanos , Incidência , Índia/epidemiologia , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Prospectivos , Fatores de Risco , Taxa de Sobrevida/tendências , Fatores de Tempo
6.
Am Heart J ; 189: 193-199, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-28625377

RESUMO

BACKGROUND: There are sparse data on outcomes of patients with heart failure (HF) from India. The objective was to evaluate hospital readmissions and 1-year mortality outcomes of patients with HF in Kerala, India. METHODS: We followed 1,205 patients enrolled in the Trivandrum Heart Failure Registry for 1 year. A trained research nurse contacted each participant every 3 months using a structured questionnaire which included hospital readmission and mortality information. RESULTS: The mean (SD) age was 61.2 (13.7) years, and 31% were women. One out of 4 (26%) participants had HF with preserved ejection fraction. Only 25% of patients with HF with reduced ejection fraction received guideline-directed medical therapy at discharge. Cumulative all-cause mortality at 1 year was 30.8% (n = 371), but the greatest risk of mortality was in the first 3 months (18.1%). Most deaths (61%) occurred in patients younger than 70 years. One out of every 3 (30.2%) patients was readmitted at least once over 1 year. The hospital readmission rates were similar between HF with preserved ejection fraction and HF with reduced ejection fraction patients. New York Heart Association functional class IV status and lack of guideline-directed medical treatment after index hospitalization were associated with increased likelihood of readmission. Similarly, older age, lower education status, nonischemic etiology, history of stroke, higher serum creatinine, lack of adherence to guideline-directed medical therapy, and hospital readmissions were associated with increased 1-year mortality. CONCLUSIONS: In the Trivandrum Heart Failure Registry, 1 of 3 HF patients died within 1 year of follow-up during their productive life years. Suboptimal adherence to guideline-directed treatment is associated with increased propensity of readmission and death. Quality improvement programs aiming to improve adherence to guideline-based therapy and reducing readmission may result in significant survival benefits in the relatively younger cohort of HF patients in India.


Assuntos
Insuficiência Cardíaca/mortalidade , Readmissão do Paciente/estatística & dados numéricos , Sistema de Registros , Doença Aguda , Adulto , Idoso , Feminino , Seguimentos , Insuficiência Cardíaca/terapia , Humanos , Índia/epidemiologia , Masculino , Pessoa de Meia-Idade , Prognóstico , Fatores de Risco , Taxa de Sobrevida/tendências , Fatores de Tempo
7.
Libyan Journal of Medicine ; 3(1): 1-15, 2008.
Artigo em Inglês | AIM (África) | ID: biblio-1265031

RESUMO

Garlic has been investigated extensively for health benefits; resulting in more than one thousand publications over the last decade alone. It is considered one of the best disease preventive foods; based on its potent and varied effects. Midlife risk factors for cardiovascular diseases; such as high serum total cholesterol; raised LDL; increased LDL oxidation; increased platelet aggregation; impaired fibrinolysis; hypertension and homocystinemia are important risk factors for dementia in later years. These risk factors play a major role in the genesis of atherosclerosis of vital arteries causing both cardiovascular and cerebrovascular disease. Garlic is best known for its lipid lowering and anti-atherogenic effects. Possible mechanisms of action include inhibition of the hepatic activities of lipogenic and cholesterogenic enzymes that are thought to be the genesis for dyslipidemias; increased excretion of cholesterol and suppression of LDL-oxidation. Oxidative stress caused by increased accumulation of reactive oxygen species (ROS) in cells has been implicated in the pathophysiology of several neurodegenerative diseases including Alzheimer's disease (AD). Several studies have demonstrated the antioxidant properties of garlic and its different preparations including Aged Garlic Extract (AGE). AGE and S-allyl-cysteines (SAC); a bioactive and bioavailable component in garlic preparations have been shown in a number of in vitro studies to protect neuronal cells against beta-amyloid (A ) toxicity and apoptosis. Thus the broad range of anti-atherogenic; antioxidant and anti-apoptotic protection afforded by garlic may be extended to its neuroprotective action; helping to reduce the risk of dementia; including vascular dementia and AD


Assuntos
Antioxidantes , Proteínas Reguladoras de Apoptose , Dieta , Alho , Fármacos Neuroprotetores , Revisão
8.
Libyan j. med ; 3(1)2008.
Artigo em Inglês | AIM (África) | ID: biblio-1265067

RESUMO

Garlic has been investigated extensively for health benefits; resulting in more than one thousand publications over the last decade alone. It is considered one of the best disease preventive foods; based on its potent and varied effects. Midlife risk factors for cardiovascular diseases; such as high serum total cholesterol; raised LDL; increased LDL oxidation; increased platelet aggregation; impaired fibrinolysis; hypertension and homocystinemia are important risk factors for dementia in later years. These risk factors play a major role in the genesis of atherosclerosis of vital arteries causing both cardiovascular and cerebrovascular disease. Garlic is best known for its lipid lowering and anti-atherogenic effects. Possible mechanisms of action include inhibition of the hepatic activities of lipogenic and cholesterogenic enzymes that are thought to be the genesis for dyslipidemias; increased excretion of cholesterol and suppression of LDL-oxidation. Oxidative stress caused by increased accumulation of reactive oxygen species (ROS) in cells has been implicated in the pathophysiology of several neurodegenerative diseases including Alzheimer's disease (AD). Several studies have demonstrated the antioxidant properties of garlic and its different preparations including Aged Garlic Extract (AGE). AGE and S-allyl-cysteines (SAC); a bioactive and bioavailable component in garlic preparations have been shown in a number of in vitro studies to protect neuronal cells against beta-amyloid (A ) toxicity and apoptosis. Thus the broad range of anti-atherogenic; antioxidant and anti-apoptotic protection afforded by garlic may be extended to its neuroprotective action; helping to reduce the risk of dementia; including vascular dementia and AD


Assuntos
Alho , Fármacos Neuroprotetores
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