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1.
Diabetes Obes Metab ; 26(5): 1897-1907, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38379430

RESUMEN

AIM: The objective of this study is to evaluate the mean body mass index (BMI), general obesity and abdominal obesity in adults aged ≥40 years residing in China in 2020, and to analyse variations in these factors across different geographic areas and subpopulations. METHODS: We utilized data from the National Stroke High-Risk Population Screening programme to calculate and compare the mean BMI and prevalence of obesity across various demographics, including sex, age, urban-rural locality, geographical region (province) and ethnicity status. RESULTS: In our study, we found that the standardized mean BMI level was 24.65 kg/m2 [95% confidence interval (CI): 24.50-22.84] in men and 24.31 kg/m2 (95% CI: 24.15-24.45) in women. Using the criteria from China, we found that the standardized prevalence of general obesity and abdominal obesity was 13.13% (95% CI: 13.05-13.21%) and 33.03% (95 CI: 32.92-33.14%), respectively. Our study also identified significant effects of age, sex, urban-rural locality, province and ethnicity status on the prevalence of obesity. Overall, our study estimated that in 2020, approximately 91.1 million adults aged ≥40 years in China were obese (46.5 million men and 44.6 million women), while 229.2 million adults (110.4 million men and 118.8 million women) were diagnosed with abdominal obesity. CONCLUSION: Our research has revealed compelling new evidence about the obesity epidemic among Chinese adults aged ≥40 years, particularly at the provincial and ethnic levels. As a result, more targeted and effective prevention strategies should be developed to alleviate the burden of obesity.


Asunto(s)
Etnicidad , Obesidad Abdominal , Adulto , Anciano , Persona de Mediana Edad , Masculino , Humanos , Femenino , Obesidad Abdominal/epidemiología , Prevalencia , Obesidad/epidemiología , Índice de Masa Corporal , China/epidemiología
2.
Scand J Clin Lab Invest ; 83(1): 18-22, 2023 02.
Artículo en Inglés | MEDLINE | ID: mdl-36534489

RESUMEN

Hb variants prevalent in China are different from those in other countries. We aimed to assess the interference from Hb variants found in China on HbA1c measurement. All Hb variants were confirmed using Sanger sequencing. HbA1c was measured using a capillary electrophoresis method (Capillarys 3 OCTA), two cation-exchange high-performance liquid chromatography methods (ADAMS HA-8180V and HLC-723 G8 standard mode), an immunoassay (Cobas c501), and a boronate affinity chromatography method (Premier Hb9210). Premier Hb9210 was used as a comparative method. A total of 16 species of Hb variants were identified in 102 variant carriers. The most common variant was Hb E, followed by Hb Q-Thailand, Hb New York and Hb J-Bangkok. Clinically significant interference was observed for the Capillarys 3 OCTA (two Hb variants), ADAMS HA-8180V (seven Hb variants), HLC-723 G8 (14 Hb variants), and Cobas c501 (two Hb variants). The proportion of unacceptable HbA1c results was 13.7% for Capillarys 3 OCTA, 52.9% for HA-8180V, 83.3% for HLC-723 G8, and 3.9% for Cobas c501. Hb variants in China severely affect the accuracy of some commonly used HbA1c methods.


Asunto(s)
Pruebas Hematológicas , Hemoglobinas Anormales , Humanos , Cromatografía Líquida de Alta Presión/métodos , Electroforesis Capilar , Hemoglobina Glucada/genética , Pruebas Hematológicas/métodos , Hemoglobinas Anormales/genética , Hemoglobinas Anormales/análisis
3.
Aging Clin Exp Res ; 34(5): 1159-1163, 2022 May.
Artículo en Inglés | MEDLINE | ID: mdl-34727357

RESUMEN

China is undergoing great social changes, and its demographic makeup is shifting every year along with those changes. China released key indicators from the seventh national population census on 12 May 2021. The total population of China's mainland increased to 1.41178 billion in 2020 from 1.33972 billion in 2010 (sixth national population census) with an average annual growth rate of 0.53%. In the past 10 years, the share of the population aged above 60 and 65 years increased by 5.44% (from 13.26% in 2010 to 18.70% in 2020) and 4.6% (from 8.9 to 13.5%), respectively. The share of the population with a college education or above rose from 8.93% in 2010 to 15.47% in 2020, and the illiteracy rate dropped from 4.08% in 2010 to 2.67% in 2020. In the next decade, China is likely to face many changes, including the increasing proportion of older adults in the population, declining births, and economic transformation. In an effort to respond to the changed demographic landscape, the authorities should adopt new laws and strategies to improve government services for older adults and consider ways to support women and families and make childbearing more attractive to and feasible for women.


Asunto(s)
Censos , Países en Desarrollo , Anciano , Envejecimiento , China , Demografía , Femenino , Humanos , Dinámica Poblacional
4.
Soc Psychiatry Psychiatr Epidemiol ; 56(12): 2275-2286, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-33616693

RESUMEN

PURPOSE: To evaluate the prevalence of and risk factors associated with anxiety, depression, and insomnia symptoms during the return-to-work period of coronavirus disease 2019 in China. METHODS: The authors conducted a large-scale, nationwide, multicenter, cross-sectional study in China. A population-based quota and snowball sampling were designed to recruit a representative sample. Online questionnaires and telephone reviews were used to collect characteristics and assess psychological and sleep problems. Anxiety, depression, and insomnia symptoms were measured by the generalized anxiety disorder-7, patient health questionnaire-9, and insomnia severity index tools. RESULTS: A total of 42,000 participants were recruited from 15 centers, and 36,795 valid questionnaires were received. Generally, 18.3, 14.9, and 17.9% of the participants had anxiety, depression, and insomnia symptoms, respectively, and 2.2-2.7% had severe symptoms. Engaging in outside activity once in ≥ 30 days (OR = 2.719, OR = 2.074, OR = 2.225) and age 50-64 years (OR = 2.431, OR = 1.936, OR = 2.036) were common risk factors for anxiety, depression and insomnia symptoms. Living in Hubei Province (OR = 1.304, OR = 1.242) was a common risk factor for anxiety and insomnia symptoms. Working as frontline medical staff (OR = 2.150) was another risk factor for anxiety symptoms. The health education rate of the samples reached 98.9%. However, the psychological intervention rate was only 16.2%, and 2.5% received targeted interventions. CONCLUSIONS: An increasing number of people might have psychological and sleep problems. However, the current psychological interventions are not sufficient. Efforts should be made to strengthen interventions for high-risk populations.


Asunto(s)
COVID-19 , Trastornos del Inicio y del Mantenimiento del Sueño , Ansiedad/epidemiología , Trastornos de Ansiedad/epidemiología , China/epidemiología , Estudios Transversales , Depresión/epidemiología , Humanos , Persona de Mediana Edad , Prevalencia , Reinserción al Trabajo , Factores de Riesgo , SARS-CoV-2 , Trastornos del Inicio y del Mantenimiento del Sueño/epidemiología
5.
Cardiovasc Diabetol ; 19(1): 125, 2020 08 08.
Artículo en Inglés | MEDLINE | ID: mdl-32771014

RESUMEN

BACKGROUND: Adiponectin plays role in multiple metabolic pathways. Previous studies in cardiovascular disease evaluated the association between adiponectin and clinical outcomes, yielding conflicting results. The aim of this study was to investigate the association of adiponectin with major adverse cardiovascular and cerebrovascular events (MACCE) and mortality in Chinese patients with first-ever acute ischemic stroke (AIS). METHODS: This was a prospective, multicenter cohort study. From September 2009 through October 2015, all patients with AIS from 3 stroke centers in Shandong were included. Serum levels of adiponectin at admission were tested. The prognostic role of adiponectin to predict the MACCE and mortality within 3 years was evaluated by multivariable-adjusted Cox proportional hazards models. RESULTS: This study included 4274 patients (median age 68 years [interquartile ranges {IQR}: 61-76]; 53.2% men). There were 794 deaths and 899 MACCE events. Higher serum levels of adiponectin on admission were found in patients with MACCE events and nonsurvivors (P < 0.001 and P < 0.001). In multivariable models adjusted for factors that confirmed in the univariate model, elevated serum levels of adiponectin were associated with a higher risk of MACCE (Quartile[Q]4 vs. Q1, Hazard ratio[HR] = 4.95 [95% confidence interval {CI}: 3.03-7.06]) and mortality (Q4 vs. Q1, HR = 5.63 [95% CI 3.15-7.99]). Adiponectin improved the prognostic value of the National Institutes of Health Stroke Scale (NIHSS) to predict MACCE (combined areas under the curve [AUC], 0.76; 95% CI 0.68-0.88; P = 0.001) and mortality (0.78[0.69-0.91]; P < 0.01). Subgroups analysis indicated that the prognostic role of adiponectin was more pronounced in women and patients with high levels of N-terminal-pro B-type natriuretic peptide(NT-pro BNP) (P < 0.001 and P < 0.001). CONCLUSIONS: Elevated serum levels of adiponectin were associated with a higher risk of MACCE and mortality independent of traditional risk factors in ischemic stroke patients.


Asunto(s)
Adiponectina/sangre , Accidente Cerebrovascular Isquémico/sangre , Anciano , Biomarcadores/sangre , Causas de Muerte , China/epidemiología , Progresión de la Enfermedad , Femenino , Humanos , Accidente Cerebrovascular Isquémico/diagnóstico , Accidente Cerebrovascular Isquémico/mortalidad , Masculino , Persona de Mediana Edad , Péptido Natriurético Encefálico/sangre , Admisión del Paciente , Fragmentos de Péptidos/sangre , Pronóstico , Estudios Prospectivos , Medición de Riesgo , Factores de Riesgo , Factores de Tiempo , Regulación hacia Arriba
6.
Lab Invest ; 99(2): 180-190, 2019 02.
Artículo en Inglés | MEDLINE | ID: mdl-30390010

RESUMEN

HIV-associated neurocognitive disorder in HIV patients substantially reduces their quality of life. We previously showed that the HIV matrix protein, p17 could stimulate lymph-angiogenesis in vitro potentially contributing to lymphoma tumour growth and in addition is associated with vascular activation in neuro-degenerating brain tissue; here, therefore, we have investigated the detailed molecular mechanisms of this action. We performed in vitro cell culture, angiogenesis experiments, phospho-protein microarrays and Western blotting to identify cellular signalling induced by p17 within human brain endothelial cells (HbMEC), and inhibitor studies to block p17-induced vascular growth. We also characterised the effects of hippocampal CA1 injection of p17 on epidermal growth factor receptor-1 (EGFR1) expression linked to our murine model of dementia. p17 strongly induced angiogenesis of HbMEC (migration, tube formation and spheroid growth). p17 concomitantly increased phosphorylation of EGFR1 as well as down-stream intermediates ERK1/2, FAK, PLC-γ and PKC-ß whilst an inhibitor peptide of EGFR, blocked cell signalling and angiogenesis. Finally, Mice that showed reduced cognitive function and behavioural deficiencies after p17 injection, demonstrated that p17 localised in cortical microvessels and also neurones many of which stained positive for p-EGFR1 by histology/IHC. This work provides strong support that p17 may be involved in initiating and/or perpetuating vascular tissue pathophysiology associated with comorbidity in HIV patients.


Asunto(s)
Encéfalo/citología , Células Endoteliales/efectos de los fármacos , Receptores ErbB/metabolismo , Antígenos VIH/farmacología , Neovascularización Patológica/inducido químicamente , Productos del Gen gag del Virus de la Inmunodeficiencia Humana/farmacología , Animales , Humanos , Ratones , Transducción de Señal/efectos de los fármacos
7.
J Neuroinflammation ; 15(1): 133, 2018 May 02.
Artículo en Inglés | MEDLINE | ID: mdl-29720216

RESUMEN

BACKGROUND: Depression is a frequent mood disorder in stroke patient. Our aim was to determine irisin levels in serum and investigate their associations with post-stroke depression (PSD) in a 6-month follow-up study in Chinese patients with first-ever acute ischemic stroke (AIS). METHODS: The subjects were first-ever AIS patients who were hospitalized at three stroke centers during the period from January 2015 to December 2016. Neurological and neuropsychological evaluations were conducted at the 6-month follow-up. Serum irisin concentrations were measured by enzyme-linked immunosorbent assay (ELISA). RESULTS: During the study period, 1205 patients were included in the analysis. There were 370 patients (30.7%) classified as depression. The depression distribution across the irisin quartiles ranged between 49.8% (first quartile) and 9.9% (fourth quartile). In the patients with depression, serum irisin levels were lower compared with those in patients without depression (P < 0.001). In a multivariate model using the first (Q1) quartile of irisin vs. Q2-4 together with the clinical variables, the marker displayed predictive information and increased risk of PSD by 75% (odds ratio [OR] for Q1, 1.75 [95% confidence interval [CI], 1.15-2.65]). In addition, a model containing known risk factors plus irisin compared with a model containing known risk factors without irisin showed a greater discriminatory ability; the area under the curve (AUC) increased from 0.77 to 0.81 (95% CI, 0.76-0.86). CONCLUSIONS: The data suggested that reduced serum levels of irisin were powerful biological markers of risk of developing PSD even after adjustment by variables. Further studies are necessary to confirm this association, which may open the way to the proposal of new therapeutic options. TRIAL REGISTRATION: ChiCTR-OPC-17013501 . Retrospectively registered 23 September 2017.


Asunto(s)
Isquemia Encefálica/sangre , Depresión/sangre , Fibronectinas/sangre , Músculo Esquelético/metabolismo , Vigilancia de la Población , Accidente Cerebrovascular/sangre , Anciano , Biomarcadores/sangre , Isquemia Encefálica/epidemiología , Isquemia Encefálica/psicología , China/epidemiología , Estudios de Cohortes , Depresión/epidemiología , Depresión/psicología , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Músculo Esquelético/citología , Vigilancia de la Población/métodos , Estudios Prospectivos , Estudios Retrospectivos , Accidente Cerebrovascular/epidemiología , Accidente Cerebrovascular/psicología
8.
Stroke ; 48(10): 2888-2891, 2017 10.
Artículo en Inglés | MEDLINE | ID: mdl-28904238

RESUMEN

BACKGROUND AND PURPOSE: The aim of the study was to evaluate the association of the measurement of serum γ-glutamyl transferase (GGT) concentrations at admission with 1-year all-cause or cardiovascular disease (CVD) mortality in patients with acute ischemic stroke. METHODS: This prospective, multicenter cohort study was conducted in 4 stroke centers in China. Baseline GGT measurements were tested. The relationship of GGT to the risk of death from all-cause or CVD was examined among 1-year follow-up patients. RESULTS: We recorded results from 5912 patients with stroke. In those patients, 51.0% were men, and the median age was 61 years. In both men and women, high GGT was significantly associated with total mortality from all-cause or CVD (P<0.001). The elevated GGT revealed adjusted hazard ratios (95% confidence interval) of 3.03 (1.99-4.54) and 3.24 (2.14-4.92) for mortality from all-cause and CVD, respectively. With an area under the curve of 0.69 (95% confidence interval, 0.66-0.73), GGT showed a significantly greater discriminatory ability to predict all-cause mortality as compared with others factors. GGT improved the National Institutes of Health Stroke Scale score (area under the curve of the combined model, 0.75 [95% confidence interval, 0.73-0.78]; P<0.01). CONCLUSIONS: This study demonstrates that GGT is independently associated with all-cause and CVD mortality in patients with ischemic stroke.


Asunto(s)
Isquemia Encefálica/sangre , Enfermedades Cardiovasculares/sangre , Mortalidad/tendencias , Accidente Cerebrovascular/sangre , gamma-Glutamiltransferasa/sangre , Biomarcadores/sangre , Isquemia Encefálica/mortalidad , Enfermedades Cardiovasculares/mortalidad , Causas de Muerte/tendencias , Femenino , Estudios de Seguimiento , Humanos , Masculino , Estudios Prospectivos , Factores de Riesgo , Accidente Cerebrovascular/mortalidad
9.
Stroke ; 48(6): 1531-1538, 2017 06.
Artículo en Inglés | MEDLINE | ID: mdl-28487339

RESUMEN

BACKGROUND AND PURPOSE: FABP4 (fatty acid-binding protein 4) is an intracellular lipid chaperone involved in coordination of lipid transportation and atherogenesis. This study aimed at observing the effect of FABP4 on the 3-month outcomes in Chinese patients with acute ischemic stroke. METHODS: In a prospective multicenter observational study, serum concentrations of FABP4 were on admission measured in plasma of 737 consecutive patients with acute ischemic stroke. Serum concentrations of FABP4, National Institutes of Health Stroke Scale score, and conventional risk factors were evaluated to determine their value to predict functional outcome and mortality within 3 months. RESULTS: During follow-up, an unfavorable functional outcome was found in 260 patients (35.3%), and 94 patients (12.8%) died. In multivariate models comparing the third and fourth quartiles to the first quartile of FABP4, the concentrations of FABP4 were associated with poor functional outcome and mortality. Compared with the reference category (Q1-Q3), the concentrations of FABP4 in Q4 had a relative risk of 4.77 (95% confidence interval [CI], 2.02-8.15; P<0.001) for poor functional outcome and mortality (odds ratio, 6.15; 95% CI, 3.43-12.68) after adjusting for other significant outcome predictors in univariate logistic regression analysis. Receiver-operating characteristic curves to predict poor functional outcome and mortality demonstrated areas under the curve of FABP4 of 0.78 (95% CI, 0.75-0.82) and 0.83 (95% CI, 0.79-0.88), which improved the prognostic accuracy of National Institutes of Health Stroke Scale score with combined areas under the curve of 0.83 (95% CI, 0.76-0.89; P<0.01) and 0.86 (95% CI, 0.81-0.92), respectively. CONCLUSIONS: Data show that FABP4 is a novel independent prognostic marker improving the currently used risk stratification of stroke patients.


Asunto(s)
Isquemia Encefálica/sangre , Proteínas de Unión a Ácidos Grasos/sangre , Evaluación del Resultado de la Atención al Paciente , Medición de Riesgo/métodos , Accidente Cerebrovascular/sangre , Adulto , Anciano , Biomarcadores/sangre , Isquemia Encefálica/mortalidad , Isquemia Encefálica/terapia , China/epidemiología , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Pronóstico , Accidente Cerebrovascular/mortalidad , Accidente Cerebrovascular/terapia
10.
Cell Physiol Biochem ; 41(2): 819-834, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28214829

RESUMEN

BACKGROUND/AIMS: EphB4 belongs to the largest family of Eph receptor tyrosine kinases. It contributes to a variety of pathological progresses of cancer malignancy. However, little is known about its role in neural stem cells (NSCs). This study examined whether EphB4 is required for proliferation and differentiation of human embryonic neural stem cells (hNSCs) in vitro. METHODS: We up- and down-regulated EphB4 expression in hNSCs using lentiviral over-expression and shRNA knockdown constructs and then investigated the influence of EphB4 on the properties of hNSCs. RESULTS: Our results show that shRNA-mediated EphB4 reduction profoundly impaired hNSCs self-renewal and proliferation. Furthermore, detection of differentiation revealed that knockdown of EphB4 inhibited hNSCs differentiation towards a neuronal lineage and promoted hNSCs differentiation to glial cells. In contrast, EphB4 overexpression promoted hNSCs self-renewal and proliferation, further induced hNSCs differentiation towards a neuronal lineage and inhibited hNSCs differentiation to glial cells. Moreover, we found that EphB4 regulates cell proliferation mediated by the Abl-CyclinD1 pathway. CONCLUSION: These studies provide strong evidence that fine tuning of EphB4 expression is crucial for the proliferation and neuronal differentiation of hNSCs, suggesting that EphB4 might be an interesting target for overcoming some of the therapeutic limitations of neuronal loss in brain diseases.


Asunto(s)
Células-Madre Neurales/metabolismo , Receptor EphB4/metabolismo , Puntos de Control del Ciclo Celular , Diferenciación Celular , Linaje de la Célula , Proliferación Celular , Células Cultivadas , Ciclina D1/metabolismo , Quinasa 4 Dependiente de la Ciclina/metabolismo , Humanos , Células-Madre Neurales/citología , Neuronas/citología , Proteínas Proto-Oncogénicas c-abl/metabolismo , Interferencia de ARN , ARN Interferente Pequeño/metabolismo , Receptor EphB4/antagonistas & inhibidores , Receptor EphB4/genética , Transducción de Señal
11.
Tumour Biol ; 37(5): 6323-30, 2016 May.
Artículo en Inglés | MEDLINE | ID: mdl-26628298

RESUMEN

Inhibitor of apoptosis-stimulating protein of p53 (iASPP), encoded by PPP1R13L gene, is often overexpressed in human cancers. From the PPP1R13L gene, at least two isoforms, iASPP-L and iASPP-SV, are produced through alternative splicing. However, the role of these isoforms in glioma is still elusive. In this study, we examined the expression of iASPP-SV in astrocytic glioma tissues with different grades and normal human cerebral tissues. The result showed a higher messenger RNA (mRNA) expression level of iASPP-SV in astrocytic glioma patients with World Health Organization (WHO) grade II to IV in comparison to the normal controls. Additionally, mRNA expression level of iASPP-SV was gradually increased with the raise of the grade in glioma. High mRNA expression level of iASPP-SV was significantly associated with malignant WHO grades (P < 0.001). The protein expression level of iASPP-SV was consistent with the mRNA expression level. The Kaplan-Meier analysis revealed that high iASPP-SV mRNA expression significantly affected overall survival and progression-free survival (both P < 0.001). Furthermore, multivariate analysis indicated that the mRNA expression of iASPP-SV was an independent prognostic marker in glioma (P < 0.001). To further explore the role of iASPP-SV in glioma, U87 cells were transfected with iASPP-SV by lentivirus and then treated with temozolomide (TMZ). Overexpression of iASPP-SV promoted the cell viability and downregulated the expression of pro-apoptosis genes (Bax, Puma, p21, and Noxa) to inhibit apoptosis induced by TMZ. Our study provides the first evidence that high iASPP-SV expression may be a novel prognostic factor and therapeutic target for glioma.


Asunto(s)
Glioma/tratamiento farmacológico , Glioma/genética , Péptidos y Proteínas de Señalización Intracelular/biosíntesis , Pronóstico , Proteínas Represoras/biosíntesis , Adulto , Anciano , Apoptosis/efectos de los fármacos , Apoptosis/genética , Línea Celular Tumoral , Proliferación Celular/efectos de los fármacos , Proliferación Celular/genética , Supervivencia Celular/efectos de los fármacos , Supervivencia Celular/genética , Dacarbazina/administración & dosificación , Dacarbazina/análogos & derivados , Supervivencia sin Enfermedad , Femenino , Regulación Neoplásica de la Expresión Génica/efectos de los fármacos , Glioma/patología , Humanos , Péptidos y Proteínas de Señalización Intracelular/genética , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Proteínas de Neoplasias/biosíntesis , Proteínas Represoras/genética , Temozolomida
12.
Childs Nerv Syst ; 32(4): 689-95, 2016 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-26869054

RESUMEN

PURPOSE: Lower heart rate variability (HRV) is known to make patients more susceptible to tachycardia and possibly sudden unexpected death in epilepsy (SUDEP). The heart rate (HR) at which tachycardia is present may vary by age. To date, no study has been done comparing adult and child seizures at different time points. The purpose of this study was to compare the frequency of HR changes with ictal tachycardia (IT) seizures at different time points in adults versus children. METHODS: We retrospectively assessed the changes in the HR of 99 IT seizures in children and 96 IT seizures in adults. The difference between adults and children in gender, hemispheric lateralization or sleep/wakefulness, or seizure type on the HR changes and the difference between children and adults during 10 s preictal, ictal onset, and ictal and 60 s postictal were separately assessed. RESULTS: The HR difference and maximum HR increase with aging in children. The seizure duration in adults lasted longer as compared with that in children. There are higher HR at different points and HR difference at 10 s preictal as compared to baseline in children. CONCLUSIONS: The study illustrates that age and duration were respectively related to HR differences distinguishing children from adults. There may be an age-related effect of HR changes associated with seizures, with higher HR at different times and HR difference at 10 s before seizure onset as compared to baseline in children, which might explain that children are more likely to predict epileptic seizures than adults, contributing to subclinical seizures and treatment efficiency in refractory patients.


Asunto(s)
Envejecimiento/fisiología , Frecuencia Cardíaca/fisiología , Convulsiones/fisiopatología , Taquicardia/fisiopatología , Adolescente , Niño , Preescolar , Electrocardiografía , Electroencefalografía , Femenino , Humanos , Masculino , Estudios Retrospectivos , Estadística como Asunto , Grabación en Video
13.
Synapse ; 69(1): 7-14, 2015 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-25155519

RESUMEN

Hypoxic preconditioning (HPC) elicits resistance to more drastic subsequent insults, which potentially provide neuroprotective therapeutic strategy, but the underlying mechanisms remain to be fully elucidated. Here, we examined the effects of HPC on synaptic ultrastructure in olfactory bulb of mice. Mice underwent up to five cycles of repeated HPC treatments, and hypoxic tolerance was assessed with a standard gasp reflex assay. As expected, HPC induced an increase in tolerance time. To assess synaptic responses, Western blots were used to quantify protein levels of representative markers for glia, neuron, and synapse, and transmission electron microscopy was used to examine synaptic ultrastructure and mitochondrial density. HPC did not significantly alter the protein levels of astroglial marker (GFAP), neuron-specific markers (GAP43, Tuj-1, and OMP), synaptic number markers (synaptophysin and SNAP25) or the percentage of excitatory synapses versus inhibitory synapses. However, HPC significantly affected synaptic curvature and the percentage of synapses with presynaptic mitochondria, which showed concomitant change pattern. These findings demonstrate that HPC is associated with changes in synaptic ultrastructure.


Asunto(s)
Hipoxia/patología , Bulbo Olfatorio/ultraestructura , Sinapsis/ultraestructura , Animales , Western Blotting , Hipoxia/fisiopatología , Masculino , Ratones Endogámicos ICR , Microscopía Electrónica de Transmisión , Mitocondrias/fisiología , Mitocondrias/ultraestructura , Inhibición Neural/fisiología , Bulbo Olfatorio/fisiopatología , Distribución Aleatoria , Reflejo/fisiología , Sinapsis/fisiología
14.
Neurol Sci ; 36(11): 2027-33, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26169757

RESUMEN

Lysophosphatidic acid (LPA) is a bioactive phospholipid that activates at least five known G-protein-coupled receptors (GPCRs): LPA1-LPA5. The nervous system is a major locus for LPA1 expression. LPA has been shown to regulate neuronal proliferation, migration, and differentiation during central nervous system development as well as neuronal survival. Furthermore, deficient LPA signaling has been implicated in several neurological disorders including neuropathic pain and schizophrenia. Parkinson's disease (PD) is a neurodegenerative movement disorder that results from the loss of dopaminergic (DA) neurons in the substantia nigra pars compacta (SNc). The specific molecular pathways that lead to DA neuron degeneration, however, are poorly understood. The influence of LPA in the differentiation of mesenchymal stem cells (MSCs) into DA neurons in vitro and LPA1 expression in a 6-hydroxydopamine (6-OHDA) lesion model of PD in vivo were examined in the present study. LPA induced neuronal differentiation in 80.2 % of the MSC population. These MSCs developed characteristic neuronal morphology and expressed the neuronal marker, neuron-specific enolase (NSE), while expression of the glial marker, glial fibrillary acidic protein (GFAP), was absent. Moreover, 27.6 % of differentiated MSCs were positive for tyrosine hydroxylase (TH), a marker for DA neurons. In the 6-OHDA PD rat model, LPA1 expression in the substantia nigra was significantly reduced compared to control. These results suggest LPA signaling via activation of LPA1 may be necessary for DA neuron development and survival. Furthermore, reduced LPA/LPA1 signaling may be involved in DA neuron degeneration thus contributing to the pathogenesis of PD.


Asunto(s)
Neuronas Dopaminérgicas/fisiología , Lisofosfolípidos/metabolismo , Neurogénesis/fisiología , Trastornos Parkinsonianos/fisiopatología , Receptores del Ácido Lisofosfatídico/metabolismo , Animales , Supervivencia Celular/efectos de los fármacos , Supervivencia Celular/fisiología , Fármacos del Sistema Nervioso Central/administración & dosificación , Neuronas Dopaminérgicas/efectos de los fármacos , Neuronas Dopaminérgicas/patología , Femenino , Proteína Ácida Fibrilar de la Glía/metabolismo , Lisofosfolípidos/administración & dosificación , Masculino , Células Madre Mesenquimatosas/patología , Células Madre Mesenquimatosas/fisiología , Plexo Mientérico/metabolismo , Neurogénesis/efectos de los fármacos , Oxidopamina , Trastornos Parkinsonianos/patología , Fosfopiruvato Hidratasa/metabolismo , Ratas Sprague-Dawley , Transducción de Señal , Sustancia Negra/patología , Sustancia Negra/fisiopatología , Tirosina 3-Monooxigenasa/metabolismo
15.
Inorg Chem ; 53(8): 4106-16, 2014 Apr 21.
Artículo en Inglés | MEDLINE | ID: mdl-24702474

RESUMEN

In this work, we present one-step low temperature hydrothermal synthesis of submicrometer particulate CuAlO2 and AgAlO2 delafossite oxides, which are two important p-type transparent conducting oxides. The synthesis parameters that affect the crystal formation processes and the product morphologies, including the selection of starting materials and their molar ratios, the pH value of precursors, the hydrothermal temperature, pressure, and reaction time, have been studied. CuAlO2 crystals have been synthesized from the starting materials of CuCl and NaAlO2 at 320-400 °C, and from Cu2O and Al2O3 at 340-400 °C, respectively. AgAlO2 crystals have been successfully synthesized at the low temperature of 190 °C, using AgNO3 and Al(NO3)3 as the starting materials and NaOH as the mineralizer. The detailed elemental compositions, thermal stability, optical properties, and synthesis mechanisms of CuAlO2 and AgAlO2 also have been studied. Noteworthy is the fact that both CuAlO2 and AgAlO2 can be stabilized up to 800 °C, and their optical transparency can reach 60%-85% in the visible range. Besides, it is believed the crystal formation mechanisms uncovered in the synthesis of CuAlO2 and AgAlO2 will prove insightful guildlines for the preparation of other delafossite oxides.

16.
Med Sci Sports Exerc ; 56(3): 528-535, 2024 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-37793155

RESUMEN

INTRODUCTION: This study aimed to evaluate recent trends in physical inactivity prevalence by sociodemographic characteristics and the province of China's residence between 2013 and 2019. METHODS: The study included 4,229,616 participants 40 yr or older from 414 geographically defined localities in China during the 7-yr period. Self-reported total physical inactivity was collected to determine the standardized prevalence of physical inactivity. Logistic regression analysis was used to examine the association between physical inactivity and stroke risk, obtaining odds ratios (OR) and 95% confidence intervals (CI). RESULTS: Results showed that the standardized prevalence of physical inactivity increased from 22.12% (95% CI = 21.99%-22.45%) in 2013 to 28.79% (95% CI = 28.48%-29.19%) in 2019, with an absolute difference of 6.67% (95% CI = 6.15% to 7.16%) and a yearly increase rate of 5.03% (95% CI = 4.85% to 5.21%). In 2019, physical inactivity was higher in female and rural participants (female = 29.55%, rural = 29.46%) than in male and urban participants (male = 28.03%, urban = 28.26%). The prevalence of physical inactivity also varied by race/ethnic groups, with the highest prevalence observed among Uyghur (47.21%) and the lowest among Yizu (14.84%). Additionally, the prevalence of physical inactivity differed by province, ranging from 14.44% in Beijing to 50.09% in Tianjin in 2019. Multivariate analyses showed that physical inactivity was associated with a higher risk of stroke (OR = 1.17, 95% CI = 1.12-1.21, P < 0.001). CONCLUSIONS: In conclusion, our study found an overall increase in physical inactivity prevalence among Chinese adults ≥40 yr old from 2013 to 2019, with significant variation across regions, sex, ages, and race/ethnic groups.


Asunto(s)
Conducta Sedentaria , Accidente Cerebrovascular , Adulto , Humanos , Masculino , Femenino , Ejercicio Físico , China/epidemiología , Prevalencia
17.
Chin Neurosurg J ; 10(1): 17, 2024 Jun 03.
Artículo en Inglés | MEDLINE | ID: mdl-38831472

RESUMEN

BACKGROUND: Intraventricular hemorrhage (IVH) refers to bleeding within the brain's ventricular system, and hydrocephalus is a life-threatening complication of IVH characterized by increased cerebrospinal fluid accumulation in the ventricles resulting in elevated intracranial pressure. IVH poses significant challenges for healthcare providers due to the complexity of the underlying pathophysiology and lack of standardized treatment guidelines. Herein, we performed a systematic review of the treatment strategies for hydrocephalus secondary to IVH. METHODS: This systematic review was prospectively registered with PROSPERO (CRD42023450786). The search was conducted in PubMed, Cochrane Library, and Web of Science on July 15, 2023. We included original studies containing valid information on therapy management and outcome of hydrocephalus secondary to primary, spontaneous, and subarachnoid or intracranial hemorrhage following IVH in adults that were published between 2000 and 2023. Glasgow Outcome Scale (GOS) or modified Ranking Scale (mRS) scores during follow-up were extracted as primary outcomes. The risk of bias was assessed using the Newcastle-Ottawa Scale for Cohort Studies or Cochrane Risk of Bias 2.0 Tool. RESULTS: Two hundred and seven patients from nine published papers, including two randomized controlled trials, were included in the analysis. The GOS was used in five studies, while the mRS was used in four. Seven interventions were applied, including craniotomy for removal of hematoma, endoscopic removal of hematoma with/without endoscopic third ventriculostomy (ETV), traditional external ventricular drainage (EVD), and various combinations of EVD, lumbar drainage (LD), and intraventricular fibrinolysis (IVF). Endoscopic removal of hematoma was performed in five of nine studies. Traditional EVD had no obvious benefit compared with new management strategies. Three different combinations of EVD, LD, and IVF demonstrated satisfactory outcomes, although more studies are required to confirm their reliability. Removal of hematoma through craniotomy generated reliable result. Generally, endoscopic removal of hematoma with ETV, removal of hematoma through craniotomy, EVD with IVF, and EVD with early continuous LD were useful. CONCLUSION: EVD is still crucial for the management of IVH and hydrocephalus. Despite a more reliable result from the removal of hematoma through craniotomy, a trend toward endoscopic approach was observed due to a less invasive profile.

18.
World J Psychiatry ; 14(5): 704-714, 2024 May 19.
Artículo en Inglés | MEDLINE | ID: mdl-38808084

RESUMEN

BACKGROUND: Healthcare workers (HCWs) are at increased risk of contracting coronavirus disease 2019 (COVID-19) as well as worsening mental health problems and insomnia. These problems can persist for a long period, even after the pandemic. However, less is known about this topic. AIM: To analyze mental health, insomnia problems, and their influencing factors in HCWs after the COVID-19 pandemic. METHODS: This multicenter cross-sectional, hospital-based study was conducted from June 1, 2023 to June 30, 2023, which was a half-year after the end of the COVID-19 emergency. Region-stratified population-based cluster sampling was applied at the provincial level for Chinese HCWs. Symptoms such as anxiety, depression, and insomnia were evaluated by the Generalized Anxiety Disorder-7, Patient Health Questionnaire-9, and Insomnia Severity Index. Factors influencing the symptoms were identified by multivariable logistic regression. RESULTS: A total of 2000 participants were invited, for a response rate of 70.6%. A total of 1412 HCWs [618 (43.8%) doctors, 583 (41.3%) nurses and 211 (14.9%) nonfrontline], 254 (18.0%), 231 (16.4%), and 289 (20.5%) had symptoms of anxiety, depression, and insomnia, respectively; severe symptoms were found in 58 (4.1%), 49 (3.5%), and 111 (7.9%) of the participants. Nurses, female sex, and hospitalization for COVID-19 were risk factors for anxiety, depression, and insomnia symptoms; moreover, death from family or friends was a risk factor for insomnia symptoms. During the COVID-19 outbreak, most [1086 (76.9%)] of the participating HCWs received psychological interventions, while nearly all [994 (70.4%)] of them had received public psychological education. Only 102 (7.2%) of the HCWs received individual counseling from COVID-19. CONCLUSION: Although the mental health and sleep problems of HCWs were relieved after the COVID-19 pandemic, they still faced challenges and greater risks than did the general population. Identifying risk factors would help in providing targeted interventions. In addition, although a major proportion of HCWs have received public psychological education, individual interventions are still insufficient.

19.
Lancet ; 389(10064): 35, 2017 01 07.
Artículo en Inglés | MEDLINE | ID: mdl-28091373
20.
Biochem Biophys Res Commun ; 436(4): 655-9, 2013 Jul 12.
Artículo en Inglés | MEDLINE | ID: mdl-23770418

RESUMEN

Cocaine and amphetamine regulated transcript (CART), a neuropeptide, has shown strong neuroprotective effects against cerebral ischemia and reperfusion (I/R) injury in vivo and in vitro. Here, we report a new effect of CART on ER stress which is induced by cerebral I/R in a rat model of middle cerebral artery occlusion (MCAO) or by oxygen and glucose deprivation (OGD) in cultured cortical neurons, as well as a new functionality of BDNF in the neuroprotection by CART against the ER stress in cerebral I/R. The results showed that CART was effective in reducing the neuronal apoptosis and expression of ER stress markers (GRP78, CHOP and cleaved caspase12), and increasing the BDNF expression in I/R injury rat cortex both in vivo and in vitro. In addition, the effects of CART on ischemia-induced neuronal apoptosis and ER stress were suppressed by tyrosine receptor kinase B (TrkB) IgG, whereas the effects of CART on BDNF transcription, synthesis and secretion were abolished by CREB siRNA. This work suggests that CART is functional in inhibiting the cerebral I/R-induced ER stress and neuronal apoptosis by facilitating the transcription, synthesis and secretion of BDNF in a CREB-dependent way.


Asunto(s)
Isquemia Encefálica/metabolismo , Factor Neurotrófico Derivado del Encéfalo/biosíntesis , Retículo Endoplásmico/efectos de los fármacos , Proteínas del Tejido Nervioso/fisiología , Estrés Fisiológico , Regulación hacia Arriba , Animales , Secuencia de Bases , Isquemia Encefálica/patología , Cartilla de ADN , Retículo Endoplásmico/metabolismo , Femenino , Masculino , Proteínas del Tejido Nervioso/genética , Embarazo , ARN Interferente Pequeño/genética , Ratas , Ratas Sprague-Dawley , Reacción en Cadena en Tiempo Real de la Polimerasa
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