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1.
J Atheroscler Thromb ; 2024 Sep 04.
Artículo en Inglés | MEDLINE | ID: mdl-39231649

RESUMEN

AIM: We aimed to assess the association between non-high-density lipoprotein cholesterol (non-HDL-C) and symptomatic intracranial artery stenosis (sICAS), as well as the impact of non-HDL-C on recurrent vascular events in patients with mild ischemic stroke ( NIHSS score ≤ 5). METHODS: This prospective study was based on data from patients presenting within 72 hours of stroke occurrence. We included patients admitted to 8 Chinese hospitals between September 2019 and November 2021. The associations of non-HDL-C with sICAS and recurrent vascular risk were assessed using multivariate regression models and a restricted cubic spline analysis. RESULTS: Among the 2,544 patients analyzed at 12 months, 652 (25.6%) were diagnosed with sICAS. Elevated non-HDL-C was linked to a higher incidence of sICAS, and the adjusted odd ratios for quintile variables and continuous variables were 1.36 ([95% CI, 1.01-1.81]) and 1.14 ([95% CI, 1.04-1.24). In comparison to those in the first quintile, the adjusted hazard ratio of the fifth quintile of non-HDL-C was 1.19 ([95% CI 0.78-1.80]) for recurrent ischemic stroke and was 0.39 ([95% CI, 0.17-0.91]) for intracranialhemorrhage. CONCLUSIONS: The non-HDL-C level may be a useful predictor of sICAS. Higher non-HDL-C levels may be associated with a lower risk of intracranial hemorrhage in mild, noncardiogenic stroke, but not a higher risk of recurrent ischemic stroke.

2.
Front Neurol ; 14: 1291929, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38090270

RESUMEN

Objective: Acute ischemic stroke (AIS) is characterized by high rates of morbidity, disability, mortality, and recurrence, often leaving patients with varying degrees of sequelae. Symptomatic intracranial atherosclerotic stenosis (sICAS) is a significant contributor to AIS pathogenesis and recurrence. The formation and progression of sICAS are influenced by pathways such as lipid metabolism and inflammatory response. Given its high risk of clinical recurrence, timely assessment of intracranial vascular stenosis in AIS is crucial for diagnosing sICAS, treating stroke, and preventing stroke recurrence. Methods: Fourteen AIS patients were divided into stenosis and control groups based on the presence or absence of intracranial vessel stenosis. Initially, 4D Label-free proteome quantification technology was employed for mass spectrometry analysis to identify differential proteins between the groups. Subsequently, functional enrichment analysis, including GO classification, KEGG pathway, and Domain, revealed trends related to differential proteins. The STRING (v.11.5) protein interaction network database was used to identify differential protein interactions and target proteins. Finally, parallel reaction monitoring (PRM) validated the selected target proteins. Results: Mass spectrometry identified 1,096 proteins, with 991 being quantitatively comparable. Using a p-value <0.05 and differential expression change thresholds of >1.3 for significant up-regulation and < 1/1.3 for significant down-regulation, 46 differential proteins were identified: 24 significantly up-regulated and 22 significantly down-regulated. PRM experiments validated five proteins related to lipid metabolism and inflammatory response: namely alpha-2-macroglobulin (A2M), lipopolysaccharide-binding protein (LBP), cathepsin G (CTSG), cystatin (CST)3, and fatty acid-binding protein (FABP)1. Conclusion: The detection of changes in these five proteins in AIS patients can aid in the diagnosis of sICAS, inform stroke treatment, and assist in preventing stroke recurrence. Moreover, it can contribute to the development of drugs for preventing AIS recurrence by integrating traditional Chinese and Western medicine.

3.
Front Neurosci ; 17: 1323270, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38260008

RESUMEN

Background and objective: Symptomatic intracranial atherosclerotic stenosis (SICAS) is the most common etiology of ischemic stroke and one of the main causes of high stroke recurrence. The recurrence of stroke is closely related to the prognosis of ischemic stroke. This study aims to develop a machine learning model based on high-resolution vessel wall imaging (HR-VWI) to predict the risk of stroke recurrence in SICAS. Methods: This study retrospectively collected data from 180 SICAS stroke patients treated at the hospital between 2020.01 and 2022.01. Relevant imaging and clinical data were collected, and follow-up was conducted. The dataset was divided into a training set and a validation set in a ratio of 7:3. We employed the least absolute shrinkage and selection operator (LASSO) regression to perform a selection on the baseline data, laboratory tests, and neuroimaging data generated by HR-VWI scans collected from the training set. Finally, five machine learning techniques, including logistic regression model (LR), support vector machine (SVM), Gaussian naive Bayes (GNB), Complement naive Bayes (CNB), and k-nearest neighbors algorithm (kNN), were employed to develop a predictive model for stroke recurrence. Shapley Additive Explanation (SHAP) was used to provide visualization and interpretation for each patient. The model's effectiveness was evaluated using average accuracy, sensitivity, specificity, precision, f1 score, PR curve, calibration curve, and decision curve analysis. Results: LASSO analysis revealed that "history of hypertension," "homocysteine level," "NWI value," "stenosis rate," "intracranial hemorrhage," "positive remodeling," and "enhancement grade" were independent risk factors for stroke recurrence in SICAS patients. In 10-fold cross-validation, the area under the curve (AUC) ranged from 0.813 to 0.912 in ROC curve analysis. The area under the precision-recall curve (AUPRC) ranged from 0.655 to 0.833, with the Gaussian Naive Bayes (GNB) model exhibiting the best ability to predict stroke recurrence in SICAS. SHAP analysis provided interpretability for the machine learning model and revealed essential factors related to the risk of stroke recurrence in SICAS. Conclusion: A precise machine learning-based prediction model for stroke recurrence in SICAS has been established to assist clinical practitioners in making clinical decisions and implementing personalized treatment measures.

4.
Immunol Allergy Clin North Am ; 42(4): 743-760, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-36265973

RESUMEN

The school is a microenvironment well-known to host many indoor allergens and pollutants, with a strong association between school allergen exposure and childhood asthma morbidity. Despite advances in therapies, asthma continues to be one of the most common chronic conditions among children, associated with significant morbidity, health care utilization, and productivity loss. Asthma prevalence is also disproportionately high among children in minority communities. This review will focus on environmental exposures associated with asthma morbidity (cockroach, mouse, cat and dog, dust mite, fungus, air pollution). This review will also discuss recent school-based interventions to improve allergy morbidity among school-aged children. Understanding the multifaceted environmental factors which may contribute to asthma pathogenesis is necessary to help guide potential school-based interventions.


Asunto(s)
Asma , Exposición a Riesgos Ambientales , Instituciones Académicas , Humanos , Alérgenos/efectos adversos , Asma/epidemiología , Exposición a Riesgos Ambientales/efectos adversos , Contaminantes Ambientales/efectos adversos , Niño
5.
Front Neurol ; 11: 574926, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33240200

RESUMEN

Background: Intracranial atherosclerotic stenosis (ICAS) is an important cause of ischemic stroke. In Asians, intracranial atherosclerotic disease leads to 33-50% of ischemic events. At present, treatment with medication vs. endovascular therapy (EVT) for symptomatic ICAS (sICAS) patients is still debatable. The clinical prognosis of patients who are not completely free of stroke symptoms despite regular medication and are not eligible for EVT for various reasons, is not yet investigated. Aim: To report the long-term recurrence rate of stroke in a cohort of symptomatic ICAS patients who intended to undergo EVT upon admission but could not for various reasons after digital subtraction angiography (DSA) evaluation. Method: This is a retrospective analysis of consecutive sICAS patients in a single center from January 1, 2016 to August 31, 2017 who underwent DSA assessment alone and were not eligible for further EVT. Demographic information, risk factors related to cerebrovascular disease, clinical comorbidities, medication, imaging data, and long-term outcomes were reported. Results: A total of 218 patients were included in the study; 42 (19.2%) patients had recurrence of stroke/transient ischemic attack (TIA) at the 1-year follow up. Patients were divided into two groups according to lesions in anterior circulation (n = 120) or posterior circulation (n = 98). There was a higher stroke/TIA recurrence rate in the posterior circulation than anterior circulation group (25.5 vs. 14.2%, p = 0.035). Given the advanced age, higher prevalence of coronary heart disease, larger stenosis length, and poorer collateral circulation, the posterior circulation group showed a higher risk of recurrent stroke/TIA and death than the anterior circulation group [HR = 3.092, 95% CI (1.335-7.164), p = 0.0084], after adjusting for all confounding factors in the COX regression model. Kaplan-Meier analysis showed that sICAS recurrence and mortality risk in the posterior circulation group was consistently higher than that in the anterior circulation group (log-rank-test, p = 0.033). Conclusions: Patients with posterior circulation sICAS have higher recurrence risk than those with anterior circulation managed with medication alone. Further, posterior circulation lesion is an independent risk factor for recurrence in sICAS patients.

6.
Bol. latinoam. Caribe plantas med. aromát ; 17(3): 238-248, mayo 2018. tab
Artículo en Inglés | LILACS | ID: biblio-915320

RESUMEN

The present article studied the use of industrialized phytotherapies by patients attended at the basic health units in Pinhais county, located in the metropolitan region of Curitiba, Paraná, Brazil. This is a quantitative, observational and cross-sectional study that was conducted by semi-structured questionnaire interviews that were used as a data collection instrument. The population sample consisted of 267 patients from basic health care organizations. Regardless of gender or age, 56.2% of the interviewed participants reported using industrialized herbal medicines, of which 21.3% acquired their drugs from drugstores from around the county. Patients reported positive results using industrialized herbal medicines (89.33%), of whom women were predominant, making up (80%) (p<0.05). Among the drugs used by all the patients, "guaco" syrup was the most frequent (34%). The present study demonstrates the good acceptance by patients of treatments that involve integrative practices, such as herbal medicine, but when a drug has a vegetal origin, the idea that these products do not cause adverse effects persists.


El presente articulo se estudio el uso de hierbas medicinales procesadas por pacientes tratados en unidades básicas de salud del município de Pinhais, en la región metropolitana de Curitiba, Paraná, Brasil. Se trata de un estudio cuantitativo, observacional y transversal, realizado por medio de entrevistas que utilizan como instrumento de recolección de datos un cuestionario semi-estructurado. La población de la muestra consistió en 267 pacientes de atención básica a la salud. Independiente del sexo o de la edad, 56.2% de los entrevistados relató hacer uso de fitoterápicos industrializados, siendo que de los 21.3% hizo la adquisición en las farmacias de las unidades de salud del municipio. Los pacientes reportaron resultados positivos con el tratamiento realizado con fitoterápicos industrializados (89.33%). Entre ellos predominan las mujeres (80%) (p<0.05). Entre los medicamentos citados por los pacientes, el jarabe de guaco se mostró el más frecuente (34%). El presente estudio demuestra la buena aceptación por parte de los pacientes en realizar tratamientos que implican prácticas integrativas como la fitoterapia, pero, por poseer origen vegetal, todavía existe la idea de que estos productos no tienen la capacidad de causar efectos adversos.


Asunto(s)
Humanos , Masculino , Femenino , Adolescente , Adulto , Persona de Mediana Edad , Anciano , Plantas Medicinales , Atención Primaria de Salud , Terapias Complementarias , Industria Farmacéutica , Fitoterapia , Brasil , Estudios Transversales , Encuestas y Cuestionarios , Estudios Observacionales como Asunto
7.
Dent. press endod ; 6(2): 21-27, May-Aug. 2016. ilus
Artículo en Portugués | LILACS, BBO - Odontología | ID: biblio-846946

RESUMEN

Objetivo: o objetivo do presente estudo foi avaliar se a etapa de processamento em que o cimento é obtido in uencia nas suas propriedades físico-químicas. Foram avaliados a composição química, o tempo de presa, solubilidade, pH e liberação de íons cálcio do cimento Portland (Grupo 1), que passa por todas as etapas do processamento; e do cimento que foi obtido na etapa de calcinação (Grupo 2). Métodos: para avaliação da composição química, foi utilizado um microscópio eletrônico de varredura na função EDS. Os testes de tempo de presa e solubilidade foram realizados de acordo com as normas #57 da ADA. Para determinação do pH e liberação de íons cálcio, foram utilizados um peagômetro e um espectrofotômetro de absorção atômica, respectivamente. Resultados: a composição química de ambos os cimentos apresentou maior quantidade de íons cálcio e silício; porém, o cimento Portland apresentou traços de enxofre. Com relação ao tempo de presa, o Grupo 2 apresentou média de tempo de presa estatisticamente menor do que o Grupo 1 (p < 0,05). Com relação à solubilidade, ambos os cimentos apresentaram valores dentro do que é recomendado pela ADA, que é de no máximo 3%; porém, houve diferença significativa, sendo o Grupo 2 mais solúvel (p < 0,05). Na análise do pH e liberação de íons cálcio, observou-se que ambos os cimentos promoveram alcalinização e liberação de íons cálcio, independentemente do tempo analisado. Conclusão: com base nos resultados obtidos, conclui-se que a etapa do processamento em que é obtido o cimento influencia em suas propriedades físico-químicas.


Asunto(s)
Humanos , Calcarea Silicata , Cementos Dentales/análisis , Cementos Dentales/química , Fenómenos Químicos , Solubilidad
8.
Rev. bras. anal. clin ; 41(3): 201-203, 2009. ilus
Artículo en Portugués | LILACS | ID: lil-544442

RESUMEN

A Leucemia Linfoide Aguda (LLA) e uma doenca caracterizada pelo acumulo de linfoblastos em numerosos orgaos e tecidos, notadamente na medula ossea. Entretanto as celulas malignas da LLA tem uma predisposicao de infiltrar o Sistema Nervoso Central (SNC) e os testiculos, sendo estes, considerados ¡°santuarios¡±. A importancia ao diagnostico da avaliacao citologica do liquido cefalorraqueano(Liquor) tornou-se fundamental para adequacao do tratamento, prognostico e para o monitoramento de eventuais recaidas. Citologicamente pode-se determinar um ¡°STATUS¡±, sendo que a avaliacao mais aceita atualmente ao diagnostico deve seguir os seguintes criterios: Status 1: puncao nao traumatica com ausencia de blastos apos citocentrifugacao. Status 2: puncao nao traumatica com presenca de blastos apos citocentrifugacao e leucocitos ¡Ü5/mm3. Status 3: puncao nao traumatica com presenca de blastosapos citocentrifugacao e leucocitos ¡Ý5/mm3 . A puncao traumatica deve ser classificada como risco, pois pode haver a infiltracao na hora da puncao. O objetivo deste trabalho e definir criteriosamente a importancia da atuacao do Farmaceutico Bioquimico no Laboratorio de Liquor auxiliando o clinico na avaliacao de conduta terapeutica baseado na avaliacao citologica do liquido cefalorraqueano.


Acute Lymphoblastic Leukemia (ALL) is an illness characterized for the accumulation of blasts in numerous organ and tissue, essential in the blone marrow. However the malignant cells of the ALL have a predisposition to infiltrate central nervous system(CNS) and the testicules, being been these, considered "sanctuaries". The importance to the diagnosis of the cytological evaluation of the cerebrospinal fluid (CSF), became basic for adequacy of the treatment, prognostic and for the involvement of eventual fallen again. Cytologically a "STATUS" can be determined, being most accepted currently to the diagnosis must follow the following criteria:CNS1 (puncture nontraumatic without leukemic blasts after ytocentrifugation), CNS2 (puncture nontraumatic, ¡Ü5 WBC/mm3 CSF with identifiable blasts after cytocentrifugation), CNS3 (puncture nontraumatic, ¡Ý5 WBC/mm3 CSF with identifiable blasts aftercytocentrifugation). TLP(+) ¨C puncture traumatic with blasts, and TLP(-) ¨C puncture traumatic without blasts. The traumatic puncture must be classified as risk therefore it can have infiltration in the hour puncture. The objective of this work is reintensification to define the importance of the performance of the Pharmaceutical Biochemist in the Cerebrospinal Fluid Laboratory assisting the physician in the based evaluation of therapeutical behavior in the cytological evaluation of the Cerebrospinal Fluid.


Asunto(s)
Humanos , Líquido Cefalorraquídeo , Leucemia-Linfoma Linfoblástico de Células Precursoras
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