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1.
FASEB J ; 38(4): e23491, 2024 Feb 29.
Artigo em Inglês | MEDLINE | ID: mdl-38363556

RESUMO

According to recent research, metabolic-associated fatty liver disease (MAFLD) has emerged as an important underlying etiology of hepatocellular carcinoma (HCC). However, the molecular mechanism of MAFLD-HCC is still unclear. Tumor necrosis factor receptor-associated factor 2 (TRAF2) is the key molecule to mediate the signal of inflammatory NF-κB pathway. This study aims to investigate the potential dysregulation of TRAF2 and its biological function in MAFLD-HCC. Huh7 TRAF2-/- demonstrated increased tumor formation ability compared to huh7 TRAF2+/+ when stimulated with transforming growth factor-ß (TGF-ß). The decisive role of TGF-ß in the development of MAFLD-HCC was confirmed through the specific depletion of TGF-ß receptor II gene in the hepatocytes (Tgfbr2ΔHep) of mice. In TRAF2-/- cells treated with TGF-ß, both the glycolysis rate and lipid synthesis were enhanced. We proved the signal of the mechanistic target of rapamycin complex 1 (mTORC1) could be activated in the presence of TGF-ß, and was enhanced in TRAF2-/- cells. The coimmunoprecipitation (co-IP) experiments revealed that TRAF2 fortified the Smurf2-mediated ubiquitination degradation of AXIN1. Hence, TRAF2 depletion resulted in increased Smad7 degradation induced by AXIN1, thus promoting the TGF-ß signal. We also discovered that PLX-4720 could bind with AXIN1 and restrained the tumor proliferation of TRAF2-/- in mice fed with high-fat diet (HFD). Our findings indicate that TRAF2 plays a significant role in the pathogenesis of MAFLD-HCC. The reduction of TRAF2 expression leads to the enhancement of the TGF-ß-mTORC1 pathway by facilitating AXIN1-mediated Smad7 degradation.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Camundongos , Animais , Carcinoma Hepatocelular/metabolismo , Fator de Crescimento Transformador beta/metabolismo , Fator 2 Associado a Receptor de TNF/genética , Fator 2 Associado a Receptor de TNF/metabolismo , Neoplasias Hepáticas/metabolismo , Hepatócitos/metabolismo , Proteína Smad7/genética , Proteína Smad7/metabolismo
2.
Cerebellum ; 2024 Jul 10.
Artigo em Inglês | MEDLINE | ID: mdl-38985238

RESUMO

COVID-19-associated cerebellar ataxia has rarely been reported and its clinical characteristics remain understudied. This study aims to report patients with COVID-19-associated cerebellar ataxia from our institution. COVID-19-associated cerebellar ataxia was diagnosed based on the prodromal COVID-19 infection and the exclusion of other causes. This study provides a summary of the patients' clinical presentations, neuroimaging features, and the results of anti-cerebellar antibody examinations. Our study included 11 patients and 4 were male. The median onset age was 38 years. Five patients also demonstrated signs of encephalopathy. Brain magnetic resonance imaging (MRI) was either unremarkable (n = 6) or showed bilateral cerebellar lesions (n = 5), which were typically transient, although brain atrophy could be observed later in the disease course. Anti-Homer-3 and anti-Yo antibodies were each detected in one patient, respectively. All patients received immunotherapy and nine improved. Compared with the late-onset group, individuals who exhibited ataxia earlier following COVID-19 onset (interval<5 days) were significantly younger [median age 18 (15.5-31) vs. 53.5 (44-64.8) years, p = 0.009] and more likely to present with encephalopathy (5/5 vs. 0/6, p = 0.002).They also experienced more severe symptoms [median modified Rankin scale (mRS) score at zenith 5 (5-5) vs. 2 (1.75-2.75), p = 0.017] and had a less favorable prognosis [median mRS score at the last follow-up 4 (2-5) vs. 1 (0-1.25), p = 0.009]. COVID-19-associated cerebellar ataxia can appear with encephalopathy. Brain MRI may show transient bilateral cerebellar lesions and brain atrophy later. Patients who exhibited ataxia earlier following COVID-19 were younger, had more severe symptoms and poorer outcomes.

3.
J Biomed Sci ; 31(1): 88, 2024 Sep 05.
Artigo em Inglês | MEDLINE | ID: mdl-39237902

RESUMO

BACKGROUND: Dysregulation of vascular homeostasis can induce cardiovascular diseases and increase global mortality rates. Although lineage tracing studies have confirmed the pivotal role of modulated vascular smooth muscle cells (VSMCs) in the progression of pathological vascular remodeling, the underlying mechanisms are still unclear. METHODS: The expression of Tudor-SN was determined in VSMCs of artery stenosis, PDGF-BB-treated VSMCs and atherosclerotic plaque. Loss- and gain-of-function approaches were used to explore the role of Tudor-SN in the modulation of VSMCs phenotype both in vivo and in vitro. RESULTS: In this study, we demonstrate that Tudor-SN expression is significantly elevated in injury-induced arteries, atherosclerotic plaques, and PDGF-BB-stimulated VSMCs. Tudor-SN deficiency attenuates, but overexpression aggravates the synthetic phenotypic switching of VSMCs and pathological vascular remodeling. Loss of Tudor-SN also reduces atherosclerotic plaque formation and increases plaque stability. Mechanistically, PTEN, the major regulator of the MAPK and PI3K-AKT signaling pathways, plays a vital role in Tudor-SN-mediated regulation on proliferation and migration of VSMCs. Tudor-SN facilitates the polyubiquitination and degradation of PTEN via NEDD4-1, thus exacerbating vascular remodeling under pathological conditions. BpV (HOpic), a specific inhibitor of PTEN, not only counteracts the protective effect of Tudor-SN deficiency on proliferation and migration of VSMCs, but also abrogates the negative effect of carotid artery injury-induced vascular remodeling in mice. CONCLUSIONS: Our findings reveal that Tudor-SN deficiency significantly ameliorated pathological vascular remodeling by reducing NEDD4-1-dependent PTEN polyubiquitination, suggesting that Tudor-SN may be a novel target for preventing vascular diseases.


Assuntos
Ubiquitina-Proteína Ligases Nedd4 , PTEN Fosfo-Hidrolase , Ubiquitinação , Remodelação Vascular , Ubiquitina-Proteína Ligases Nedd4/metabolismo , Ubiquitina-Proteína Ligases Nedd4/genética , Animais , Camundongos , PTEN Fosfo-Hidrolase/metabolismo , PTEN Fosfo-Hidrolase/genética , Músculo Liso Vascular/metabolismo , Masculino , Miócitos de Músculo Liso/metabolismo , Camundongos Endogâmicos C57BL
4.
BMC Neurol ; 24(1): 223, 2024 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-38943096

RESUMO

BACKGROUND: Diagnosis and monitoring of leptomeningeal malignancy remain challenging, and are usually based on neurological, radiological, cerebrospinal fluid (CSF) and pathological findings. This study aimed to investigate the diagnostic performance of CSF metagenomic next-generation sequencing (mNGS) and chromosome copy number variations (CNVs) analysis in the detection of leptomeningeal malignancy. METHODS: Of the 51 patients included in the study, 34 patients were diagnosed with leptomeningeal malignancies, and 17 patients were diagnosed with central nervous system (CNS) inflammatory diseases. The Sayk's spontaneous cell sedimentation technique was employed for CSF cytology. And a well-designed approach utilizing the CSF mNGS-CNVs technique was explored for early diagnosis of leptomeningeal malignancy. RESULTS: In the tumor group, 28 patients were positive for CSF cytology, and 24 patients were positive for CSF mNGS-CNVs. Sensitivity and specificity of CSF cytology were 82.35% (95% CI: 66.83-92.61%) and 94.12% (95% CI: 69.24-99.69%). In comparison, sensitivity and specificity of CSF mNGS-CNV were 70.59% (95% CI: 52.33-84.29%) and 100% (95% CI: 77.08-100%). There was no significant difference in diagnostic consistency between CSF cytology and mNGS-CNVs (p = 0.18, kappa = 0.650). CONCLUSIONS: CSF mNGS-CNVs tend to have higher specificity compared with traditional cytology and can be used as a complementary diagnostic method for patients with leptomeningeal malignancies.


Assuntos
Variações do Número de Cópias de DNA , Sequenciamento de Nucleotídeos em Larga Escala , Neoplasias Meníngeas , Metagenômica , Humanos , Masculino , Feminino , Neoplasias Meníngeas/líquido cefalorraquidiano , Neoplasias Meníngeas/genética , Neoplasias Meníngeas/diagnóstico , Sequenciamento de Nucleotídeos em Larga Escala/métodos , Pessoa de Meia-Idade , Variações do Número de Cópias de DNA/genética , Adulto , Metagenômica/métodos , Idoso , Adulto Jovem , Sensibilidade e Especificidade , Adolescente , Citologia
5.
Health Econ ; 33(9): 2088-2104, 2024 09.
Artigo em Inglês | MEDLINE | ID: mdl-38850554

RESUMO

The side effects of technological progress on the economy have been discussed frequently, but little is known regarding its health consequences. By combining the national individual-level panel data of alcohol drinking with the prefecture-level robot exposure rate in China, we find that one more robot exposure rate could induce up to 2.2% points increase in the probability of problem drinking. Such a pattern of problem drinking is explained by negative emotions, which can be ascribed to job loss due to substitution, higher income vulnerability, and reduced organization participation. Further, we provide evidence that automation can incur health costs, particularly for easily substituted workers, which would exacerbate health inequality in China. This paper sheds light on the impact of automation and the social incentives of problem drinking, emphasizing the possibly heterogeneous health cost accompanied by the automation process.


Assuntos
Consumo de Bebidas Alcoólicas , Automação , Humanos , China , Masculino , Feminino , Adulto , Consumo de Bebidas Alcoólicas/epidemiologia , Pessoa de Meia-Idade , Alcoolismo
6.
Neurol Sci ; 45(1): 253-260, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37580515

RESUMO

BACKGROUND: Mycophenolate mofetil (MMF) is frequently used in the treatment of neurological autoimmune disorders. However, its effect on the relapse risk in anti-leucine-rich glioma-inactivated protein 1 (anti-LGI1) encephalitis is not well studied. METHODS: In this prospective observational cohort study, anti-LGI1 encephalitis patients were grouped according to MMF treatment status (MMF and non-MMF groups). The primary outcome was relapse after disease onset. RESULTS: A total of 83 patients were included, with a median onset age of 60 years. Fifty-four patients were men (65.1%). The MMF group comprised 28 patients and the non-MMF group comprised 55. Median follow-up from symptom onset was 26 months. Relapse occurred in 43 patients (51.8%). Median modified Rankin scale (mRS) score at enrollment was significantly higher in the MMF group than the non-MMF group (3 vs. 2; p = 0.001). Median mRS score at last follow-up was comparable between groups (1 vs. zero; p = 0.184). Both MMF treatment (HR 0.463; 95% CI, 0.231-0.929; p = 0.030) and cognitive impairment at enrollment (HR 3.391; 95% CI, 1.041-11.044; p = 0.043) were independent predictors of relapse. Starting immunotherapy before development of cognitive impairment trended towards reducing relapse risk. Outcome at last follow-up was good (mRS score 0-2) in all patients except for one in the non-MMF group. Adverse events associated with MMF treatment were mild and transient. CONCLUSION: Although the outcome of anti-LGI1 encephalitis patients is generally favorable, relapse is common, especially in those with cognitive impairment. MMF treatment is well-tolerated and can significantly reduce the risk of relapse.


Assuntos
Encefalite , Glioma , Masculino , Humanos , Pessoa de Meia-Idade , Feminino , Ácido Micofenólico/uso terapêutico , Leucina , Estudos Prospectivos , Estudos Retrospectivos , Recidiva Local de Neoplasia/tratamento farmacológico , Recidiva Local de Neoplasia/induzido quimicamente , Encefalite/tratamento farmacológico , Encefalite/induzido quimicamente , Proteínas , Glioma/tratamento farmacológico
7.
Neurol Sci ; 45(7): 3411-3419, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38342839

RESUMO

OBJECTIVE: To summarize the clinical characteristics and prognosis of febrile infection-related epilepsy syndrome with claustrum lesions (FIRES-C). METHOD: Clinical data of FIRES-C patients were collected retrospectively. The study reviewed and analyzed their clinical manifestations, treatment strategies, and prognosis. RESULT: Twenty patients were enrolled, including 13 females and 7 males, with a median onset age of 20.5 years. All patients developed seizures after fever, with a median interval of 5 days. Brain MRI showed symmetric lesions in the claustrum in all patients. The median interval from seizure onset to abnormal MRI signals detection was 12.5 days. All patients had negative results for comprehensive tests of neurotropic viruses and antineuronal autoantibodies. Seventy percent of cases had been previously empirically diagnosed with autoimmune encephalitis or viral encephalitis before. All patients received anti-seizure medicine. Eleven patients (55%) received antiviral therapy. All patients received immunotherapy, including glucocorticoids (100%), intravenous immunoglobulin (IVIg) (65%), plasma exchange (PLEX) (10%), tocilizumab (10%), rituximab (5%), and cyclophosphamide (5%). Sixty percent of patients received long-term immunotherapy (≥ 3 months). The median follow-up was 11.5 months;60% of patients were diagnosed with refractory epilepsy. CONCLUSION: Bilateral claustrum lesion on MRI is a distinctive neuroimage feature for FIRES, which may serve as an indication for the initial clinical assessments. FIRES-C should be classified as a type of inflammatory encephalopathy characterized by a monophasic nature. Some FIRES-C patients respond to immunotherapy and antiseizure treatments but most experience refractory epilepsy as a long-term outcome.


Assuntos
Claustrum , Humanos , Masculino , Feminino , Adulto , Estudos Retrospectivos , Adolescente , Adulto Jovem , Claustrum/diagnóstico por imagem , Imageamento por Ressonância Magnética , Criança , Síndromes Epilépticas , Encefalite/diagnóstico por imagem , Encefalite/diagnóstico , Encefalite/complicações , Pré-Escolar , Pessoa de Meia-Idade
8.
J Neurovirol ; 29(6): 692-698, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37898569

RESUMO

The aim of this study is to analyze the clinical characteristics and outcomes of Chinese patients with progressive multifocal leukoencephalopathy (PML) who were treated with programmed cell death protein 1 (PD1) blockade therapies. We retrospectively analyzed patients who were admitted to our hospital between October 1, 2020, and October 1, 2022, diagnosed with PML and treated with PD1 blockade therapies. Four patients with PML who were treated with PD1 blockade therapies were identified. All patients were male, and their ages ranged from 19 to 54 years old. One patient (Case 2) exhibited mild pleocytosis, while three patients (Cases 2-4) had markedly reduced T lymphocyte cell counts prior to treatment. The time interval between symptom onset and treatment initiation ranged from six to 54 weeks. All patients received pembrolizumab treatment, with a total of two to four doses administered. Three patients who responded to pembrolizumab treatment showed clinical improvement starting around 8 weeks after the initiation of therapy. Although one patient did not show clinical improvement, they ultimately survived until the last follow-up. None of the patients in this study exhibited immune-related adverse events or immune reconstitution inflammatory syndrome. PD1 blockade appears to be a promising novel therapeutic option for PML; additional prospective studies are necessary to confirm its efficacy.


Assuntos
Vírus JC , Leucoencefalopatia Multifocal Progressiva , Humanos , Masculino , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Feminino , Leucoencefalopatia Multifocal Progressiva/tratamento farmacológico , Estudos Retrospectivos , Estudos Prospectivos , Anticorpos Monoclonais Humanizados/uso terapêutico
9.
Cerebellum ; 22(3): 379-385, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35618871

RESUMO

Autoimmune cerebellar ataxia (ACA) is an important and potentially treatable cause of sporadic cerebellar syndrome, but studies with large sample size are limited. This study reported a large ACA series in China and described its etiology and clinical characteristics. We reviewed all ACA patients from our hospital (2013-2021) and analyzed their clinical and paraclinical features, treatment, and outcome. ACA subtypes investigated included paraneoplastic cerebellar degeneration (PCD), primary autoimmune cerebellar ataxia (PACA), anti-glutamate decarboxylase (GAD)-associated cerebellar ataxia, opsoclonus-myoclonus syndrome (OMS), Miller Fisher syndrome (MFS), and ACA-associated with autoimmune encephalitis. A total of 127 patients were identified and 40.9% were male. The median onset age was 47.0 years. Gait ataxia was the most prevalent feature followed by limb ataxia, dizziness, and dysarthria/dysphagia. Extracerebellar manifestations included pyramidal signs (28.3%) and peripheral neuropathy/radiculopathy (15.0%). ACA subtypes were PCD (30.7%), PACA (37.8%), ACA associated with autoimmune encephalitis (12.6%), anti-GAD-associated ACA (8.7%), MFS (7.1%), and OMS (3.1%). Neuronal antibodies were positive in 67.7% of patients. Brain magnetic resonance imaging was unremarkable (55.7%) or showed atrophy (18.3%) or abnormal signal intensity (26.1%, most of which was extracerebellar). Although most patients received immunotherapy, the modified Rankin scale at last follow-up was ≤ 2 in only 47.3% patients. Thirteen patients died and 24 relapsed. Compared with PACA, PCD patients were older and had poorer outcome. This study illustrates the heterogeneity in the clinical features of ACA and suggests the importance of neuronal antibody testing in ACA diagnosis. PCD and PACA are the dominant ACA subtypes, and the former has a less favorable prognosis.


Assuntos
Doenças Autoimunes do Sistema Nervoso , Ataxia Cerebelar , Doença de Hashimoto , Degeneração Paraneoplásica Cerebelar , Humanos , Masculino , Pessoa de Meia-Idade , Feminino , Ataxia Cerebelar/diagnóstico , Autoanticorpos , Degeneração Paraneoplásica Cerebelar/terapia
10.
Lab Invest ; 101(8): 1026-1035, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33875791

RESUMO

Angiogenesis is essential for various physiological and pathological processes. Previous studies have shown that miRNAs play an important role in blood vessel development and angiogenesis. Recent studies have suggested that miR-181b might be involved in the regulation of angiogenesis in tumors. However, whether miR-181b plays a role in angiogenesis in nontumor diseases is unclear. We found that miR-181b expression was downregulated in hypoxia-stimulated primary human umbilical vein endothelial cells (HUVECs) and a mouse hindlimb ischemia (HLI) model. Gain- and loss-of-function studies showed that a miR-181b mimic inhibited HUVEC migration and tube formation in vitro, and a miR-181b inhibitor had the opposite effects. In vivo, agomir-181b suppressed perfusion recovery in the HLI model and capillary density in a Matrigel plug assay, while perfusion recovery and capillary density were increased by injection of antagomir-181b. Mechanistically, we showed with a reporter assay that cellular communication network factor 1 (CCN1) was a direct target of miR-181b. Moreover, miR-181b suppressed angiogenesis at least in part by targeting CCN1 to inhibit the AMPK signaling pathway. Our research suggests that miR-181b suppresses angiogenesis by directly targeting CCN1, which provides new clues for pro-angiogenic treatment strategies.


Assuntos
Proteína Rica em Cisteína 61/metabolismo , Membro Posterior/irrigação sanguínea , MicroRNAs/metabolismo , Animais , Células Cultivadas , Proteína Rica em Cisteína 61/genética , Angiopatias Diabéticas/metabolismo , Feminino , Técnicas de Silenciamento de Genes , Células Endoteliais da Veia Umbilical Humana , Humanos , Isquemia/genética , Isquemia/metabolismo , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Nus , MicroRNAs/genética , Músculo Esquelético/metabolismo , Neovascularização Patológica/genética , Neovascularização Patológica/metabolismo
11.
BMC Neurol ; 21(1): 490, 2021 Dec 16.
Artigo em Inglês | MEDLINE | ID: mdl-34915865

RESUMO

BACKGROUND: Encephalitis associated with antibodies against alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) is an extremely rare type of antibody-mediated encephalitis. This research aims to investigate the clinical characteristics and prognosis of anti-AMPAR encephalitis. METHODS: This retrospective study enrolled nine patients with anti-AMPAR encephalitis. Demographic information, clinical manifestations, laboratory and radiological findings, treatment and response were collected and analyzed. These patients were followed up with an average period of 72 weeks to gather prognostic information. RESULTS: Nine patients (7 females and 2 males) were enrolled with a mean age at disease onset of 59 years old. Three clinical pictures, including limbic encephalitis (n = 7; 78%), pure amnesia (n = 1; 11%) and fulminant encephalitis (n = 1; 11%) were identified. New symptoms of dysphagia and deafness were identified in the clinical spectrum of anti-AMPAR encephalitis. All patients had positive blood AMPAR antibodies, and six of them (67%) had paired positive antibodies in cerebrospinal fluid (CSF). Brain magnetic resonance imaging (MRI) was abnormal in 75% of the patients with no specific patterns recognized. Six patients (67%) had tumors, including lung cancers and thymomas. After immunotherapy and oncotherapy, partial improvement of neurological symptoms was observed among all 6 patients with available records during their hospitalization. After a mean follow-up of 72 weeks, 3 patients had marked decrease of modified Rankin Scale (mRS) score, 1 patient had unchanged mRS score, 4 patients died and the other one was lost. CONCLUSIONS: Anti-AMPAR encephalitis mainly presents as limbic encephalitis, and is paraneoplastic in 67% of cases. Thus, intensive screening for tumors is recommended for all anti-AMPAR patients. Although patients showed a good short-term therapeutic response, the overall prognosis was not satisfactory.


Assuntos
Encefalite , Encefalite/diagnóstico por imagem , Encefalite/terapia , Humanos , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos , Ácido alfa-Amino-3-hidroxi-5-metil-4-isoxazol Propiônico
12.
J Cell Mol Med ; 24(17): 10128-10139, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32697395

RESUMO

Apatinib (YN968D1) is a small-molecule tyrosine kinase inhibitor(TKI)which can inhibit the activity of vascular endothelial growth factor receptor-2 (VEGFR-2). It has been reported that apatinib has anti-tumour effect of inhibiting proliferation and inducing apoptosis of a variety of solid tumour cells, whereas its effect on vascular smooth muscle cells (VSMC) remains unclear. This study investigated the effect of apatinib on phenotypic switching of arterial smooth muscle cells in vascular remodelling. Compared to the vehicle groups, mice that were performed carotid artery ligation injury and treated with apatinib produced a reduction in abnormal neointimal area. For in vitro experiment, apatinib administration inhibited VSMC proliferation, migration and reversed VSMC dedifferentiation with the stimulation of platelet-derived growth factor type BB (PDGF-BB).In terms of mechanism, with the preincubation of apatinib, the activations of PDGF receptor-ß (PDGFR-ß) and phosphoinositide-specific phospholipase C-γ1 (PLC-γ1) induced by PDGF-BB were inhibited in VSMCs. With the preincubation of apatinib, the phosphorylation of PDGFR-ß, extracellular signal-related kinases (ERK1/2) and Jun amino-terminal kinases (JNK) induced by PDGF-BB were also inhibited in rat vascular smooth muscle cell line A7r5. Herein, we found that apatinib attenuates phenotypic switching of arterial smooth muscle cells induced by PDGF-BB in vitro and vascular remodelling in vivo. Therefore, apatinib is a potential candidate to treat vascular proliferative diseases.


Assuntos
Artérias Carótidas/efeitos dos fármacos , Músculo Liso Vascular/efeitos dos fármacos , Miócitos de Músculo Liso/efeitos dos fármacos , Piridinas/farmacologia , Receptor beta de Fator de Crescimento Derivado de Plaquetas/metabolismo , Remodelação Vascular/efeitos dos fármacos , Animais , Artérias Carótidas/metabolismo , Lesões das Artérias Carótidas/tratamento farmacológico , Lesões das Artérias Carótidas/metabolismo , Desdiferenciação Celular/efeitos dos fármacos , Movimento Celular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Células Cultivadas , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Músculo Liso Vascular/metabolismo , Miócitos de Músculo Liso/metabolismo , Neointima/metabolismo , Fosforilação/efeitos dos fármacos , Ratos , Ratos Sprague-Dawley , Transdução de Sinais/efeitos dos fármacos
13.
J Neurovirol ; 26(4): 556-564, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32572833

RESUMO

Pseudorabies virus (PRV) is known to cause severe encephalitis in juvenile pigs and various non-native hosts; recent evidences suggest that PRV might cause encephalitis in humans. In a multicenter cohort study in China, next-generation sequencing of cerebrospinal fluid (CSF) was performed to detect pathogens in all patients with clinically suspected central nervous system infections. This study involved all the patients whose CSF samples were positive for PRV-DNA; their clinical features were evaluated, and species-specific PCR and serological tests were sequentially applied for validation. Among the 472 patients tested from June 1, 2016, to December 1, 2018, six were positive for PRV-DNA, which were partially validated by PCR and serological tests. Additionally, we retrospectively examined another case with similar clinical and neuroimaging appearance and detected the presence of PRV-DNA. These patients had similar clinical manifestations, including a rapid progression of panencephalitis, and similar neuroimaging features of symmetric lesions in the basal ganglia and bilateral hemispheres. Six of the patients were engaged in occupations connected with swine production. PRV infection should be suspected in patients with rapidly progressive panencephalitis and characteristic neuroimaging features, especially with exposure to swine.


Assuntos
Gânglios da Base/patologia , Cérebro/patologia , DNA Viral/genética , Encefalite Viral/patologia , Herpesvirus Suídeo 1/genética , Carne/virologia , Pseudorraiva/patologia , Adulto , Animais , Anticorpos Antivirais/líquido cefalorraquidiano , Gânglios da Base/diagnóstico por imagem , Gânglios da Base/virologia , Cérebro/diagnóstico por imagem , Cérebro/virologia , China , DNA Viral/líquido cefalorraquidiano , Encefalite Viral/líquido cefalorraquidiano , Encefalite Viral/diagnóstico , Encefalite Viral/virologia , Feminino , Herpesvirus Suídeo 1/crescimento & desenvolvimento , Herpesvirus Suídeo 1/patogenicidade , Sequenciamento de Nucleotídeos em Larga Escala , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase , Pseudorraiva/líquido cefalorraquidiano , Pseudorraiva/diagnóstico , Pseudorraiva/virologia , Suínos
14.
Am J Epidemiol ; 187(5): 1001-1009, 2018 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-29351572

RESUMO

Different populations may respond differently to exposure to ambient fine particulate matter, defined as particulate matter with an aerodynamic diameter less than or equal to 2.5 µm (PM2.5); however, less is known about the distribution of susceptible individuals among the entire population. We conducted a time-stratified case-crossover study to assess associations between stroke risk and exposure to PM2.5. During 2013-2015, 1,356 first-ever stroke events were derived from a large representative sample, the China National Stroke Screening Survey (CNSSS) database. Daily PM2.5 average exposures with a spatial resolution of 0.1° were estimated using a data assimilation approach combining satellite measurements, air model simulations, and monitoring values. The distribution of susceptibility was derived according to individual-specific associations with PM2.5 modified by different combinations of individual-level characteristics and their joint frequencies among all of the CNSSS participants (n = 1,292,010). We found that first-ever stroke was statistically significantly associated with PM2.5 (per 10-µg/m3 increment of exposure, odds ratio = 1.049, 95% confidence interval (CI): 1.038, 1.061). This association was modified by demographic (e.g., sex), lifestyle (e.g., overweight/obesity), and medical history (e.g., diabetes) variables. The combined association with PM2.5 varied from 0.966 (95% CI: 0.920, 1.013) to 1.145 (95% CI: 1.080, 1.215) per 10-µg/m3 increment in different subpopulations. We found that most of the CNSSS participants were at increased risk of PM2.5-related stroke, while only a small proportion were highly susceptible.


Assuntos
Poluentes Atmosféricos/efeitos adversos , Poluição do Ar/efeitos adversos , Exposição Ambiental/efeitos adversos , Material Particulado/efeitos adversos , Acidente Vascular Cerebral/etiologia , Adulto , Idoso , Poluentes Atmosféricos/análise , Poluição do Ar/análise , China/epidemiologia , Estudos Cross-Over , Demografia , Suscetibilidade a Doenças/etiologia , Exposição Ambiental/análise , Feminino , Inquéritos Epidemiológicos , Humanos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Material Particulado/análise , Risco , Acidente Vascular Cerebral/epidemiologia
15.
Front Psychol ; 15: 1447852, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39205986

RESUMO

Objective: This study aims to explore how problematic internet use may affect the sleep quality of Chinese adolescents using the extended Stressor-Strain-Outcome (SSO) model. The model posits that stressors indirectly influence behavioral outcomes through the mediation of emotional and physiological strain responses. Method: A sample of 4,365 adolescents in China participated in this study, which utilized questionnaires and other methods to develop a novel SSO model. In this model, problematic internet use was considered as the stressor, anxiety as an indicator of tension, and sleep quality as the ultimate outcome. Family health was introduced as a moderating variable. Results: The study found that problematic internet use can significantly and positively predict adolescents' anxiety (ß = 0.132, p < 0.001) and sleep quality (ß = 0.362, p < 0.001). Furthermore, anxiety was identified as a significant mediating factor between problematic internet use and sleep quality [Effect = 0.066, p < 0.05, 95% CI (0.014, -0.0018)]. Family health was observed to have a moderating effect on the relationship between problematic internet use and anxiety (ß = -0.075, p < 0.001). Conclusion: The research indicates that problematic internet use not only directly increases individual anxiety as a stressor but also indirectly impacts sleep quality by exacerbating anxiety. However, a positive family health status can effectively moderate the adverse impact of problematic internet use on anxiety.

16.
J Neurol ; 271(3): 1072-1079, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38141127

RESUMO

OBJECTIVE: The objective of this study was to investigate the factors influencing relapse and prognosis in patients with primary autoimmune cerebellar ataxia (PACA), an area previously not well understood. METHODS: This prospective cohort study included patients who satisfied the modified diagnostic criteria of PACA. A modified Rankin scale score ≤ 2 at the last follow-up was defined as a favorable prognosis. Cox and Logistic regression were utilized to identify relapsing and prognostic factors, respectively. RESULTS: A total of 68 patients were included and 35.3% were male. The median onset age was 42.9 years (IQR 22.1-54.0). Neuronal autoantibodies were detected in 33 (50.8%) patients. Of the 65 patients who received first-line immunotherapy, 55 (84.6%) were responsive and 10 (15.4%) were not. Responsiveness to first-line immunotherapy emerged as an independent factor for favorable prognosis (HR 16.762; 95% CI 2.877-97.655; p = 0.002), as did the absence of peripheral neuropathy/radiculopathy (HR 14.286; 95% CI 2.41-83.333; p = 0.003). Relapses occurred in 19 (27.9%) patients. Onset age ≤ 43 years (HR 5.245; 95% CI 1.499-18.35; p = 0.009), presence of peripheral neuropathy/radiculopathy (HR 4.280; 95% CI 1.622-11.298; p = 0.003) and elevated cerebrospinal fluid (CSF) protein concentration (HR 3.443; 95% CI 1.083-10.951; p = 0.036) were statistically significant relapsing factors. CONCLUSION: This study identified younger onset age, presence of peripheral neuropathy/radiculopathy and elevated CSF protein concentration as relapsing factors, and absence of peripheral neuropathy/radiculopathy and responsiveness to first-line immunotherapy as independent factors for favorable prognosis in PACA patients. These findings may guide individualized treatment strategies and potentially improve patient outcomes.


Assuntos
Ataxia Cerebelar , Doenças do Sistema Nervoso Periférico , Radiculopatia , Humanos , Masculino , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Feminino , Prognóstico , Ataxia Cerebelar/diagnóstico , Estudos Prospectivos , Autoanticorpos/líquido cefalorraquidiano , Recidiva
17.
Body Image ; 51: 101766, 2024 Jul 09.
Artigo em Inglês | MEDLINE | ID: mdl-38986235

RESUMO

The Body Talk Scale (BTS) measures both negative body talk (including fat talk and muscle talk) and positive body talk across genders. In this study, we translated it into Chinese and assessed its structure, reliability and validity among mainland Chinese residents. Item analyses indicated that no item deletion was necessary for this study, and both exploratory factor analysis (n = 1853) and exploratory graph analysis (n = 1583) supported the three-factor structure of the original scale. Confirmatory factor analysis showed that the scale had a good model fit with CFI= 0.95, GFI= 0.93, TLI= 0.94, and RMSEA= 0.079(90 %CI [0.075, 0.084]). The results also showed that the Chinese version of the BTS had adequate criterion-related validity,internal consistency and six-week test-retest reliability. Meanwhile, the scale has good measurement invariance with respect to gender and can be tested for gender differences. In conclusion, the BTS showed sufficient psychometric properties in a Chinese sample, making it a valid instrument for studying body talk and health status in Chinese populations.

18.
Front Public Health ; 12: 1285208, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38481851

RESUMO

Objective: This study aims to explore the factors influencing Chinese parents' attitudes toward death education. Given the current lack of such education in China, this research is particularly significant. Death education is vital for shaping the values of young people and alleviating mental health issues, such as depression and suicidal tendencies. By identifying these influencing factors, this study seeks to provide guidance for policymakers and educators in promoting the development and widespread adoption of death education. Methods: To do so, a national cross-sectional quota sample of 12,435 Chinese parents was used. Borrowing from social-ecological theory, the researchers carried out multiple stepwise regression analyses to examine the individual, family, and social-level factors that shape the supportive attitudes of Chinese parents toward death education. Results: The findings revealed that at the individual level, parent (ß = 0.04, p < 0.001), education level (ß = 0.07, p < 0.001), and religious belief (ß = -0.02, p < 0.05) were significant predictors of Chinese parents' support for death education. Meanwhile, at the family and social level, average monthly household income (ß = 0.07, p < 0.001), family health (ß = 0.03, p < 0.05), family communication (ß = 0.02, p < 0.05), social support (ß = 0.15, p < 0.001), neighborhood relations (ß = 0.11, p < 0.001), and social network size (ß = 0.05, p < 0.001) were significant predictors of Chinese parents' supportive attitudes toward death education. Conclusion: Based on these findings, it is suggested that the relevant development, planning, publicity, and public welfare groups and government departments should promote death education, provide more social support, and encourage neighborhood harmony. As higher education and average monthly household income were found to significantly impact the support, the government should improve access to higher education and actively work to increase residents' income to facilitate the development of death education.


Assuntos
Povo Asiático , Pais , Humanos , Estudos Transversais , Escolaridade , Pais/psicologia , Inquéritos e Questionários
19.
Neuroimage Clin ; 43: 103655, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39146837

RESUMO

BACKGROUND: Internal capsule strokes often result in multidomain cognitive impairments across memory, attention, and executive function, typically due to disruptions in brain network connectivity. Our study examines these impairments by analyzing interactions within the triple-network model, focusing on both static and dynamic aspects. METHODS: We collected resting-state fMRI data from 62 left (CI_L) and 56 right (CI_R) internal capsule stroke patients, along with 57 healthy controls (HC). Using independent component analysis to extract the default mode (DMN), executive control (ECN), and salience networks (SAN), we conducted static and dynamic functional network connectivity analyses (DFNC) to identify differences between stroke patients and controls. For DFNC, we used k-means clustering to focus on temporal properties and multilayer network analysis to examine integration and modularity Q, where integration represents dynamic interactions between networks, and modularity Q measures how well the network is divided into distinct modules. We then calculated the correlations between SFNC/DFNC properties with significant inter-group differences and cognitive scales. RESULTS: Compared to HC, both CI_L and CI_R patients showed increased static FCs between SAN and DMN and decreased dynamic interactions between ECN and other networks. CI_R patients also had heightened static FCs between SAN and ECN and maintained a state with strongly positive FNCs across all networks in the triple-network model. Additionally, CI_R patients displayed decreased modularity Q. CONCLUSION: These findings highlight that stroke can result in the disruption of static and dynamic interactions in the triple network model, aiding our understanding of the neuropathological basis for multidomain cognitive deficits after internal capsule stroke.


Assuntos
Disfunção Cognitiva , Imageamento por Ressonância Magnética , Rede Nervosa , Acidente Vascular Cerebral , Humanos , Masculino , Feminino , Pessoa de Meia-Idade , Acidente Vascular Cerebral/fisiopatologia , Acidente Vascular Cerebral/complicações , Acidente Vascular Cerebral/diagnóstico por imagem , Imageamento por Ressonância Magnética/métodos , Disfunção Cognitiva/fisiopatologia , Disfunção Cognitiva/etiologia , Disfunção Cognitiva/diagnóstico por imagem , Idoso , Rede Nervosa/fisiopatologia , Rede Nervosa/diagnóstico por imagem , Encéfalo/fisiopatologia , Encéfalo/diagnóstico por imagem , Função Executiva/fisiologia , Adulto , Cápsula Interna/fisiopatologia , Cápsula Interna/diagnóstico por imagem
20.
Comput Biol Med ; : 108712, 2024 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-38906761

RESUMO

This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconveniencethis may cause. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/policies/article-withdrawal.

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