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BACKGROUND: Although the mechanisms responsible for the pathogenesis of preeclampsia (PE) have not been entirely clarified, oxidative stress is thought to be its leading cause. As a major component responsible for reactive oxygen species (ROS) production during oxidative stress, p22phox, encoded by CYBA, is an essential subunit of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase. The aim of this study was to investigate whether CYBA expression and its polymorphism are associated with PE. METHODS: Expression of CYBA was analysed in placentas from PE and control groups, as well as in HTR-8/SVneo cells stimulated with CoCl2 and TNF-α. Then, the CYBA C242T polymorphism in 1184 patients with PE and 1421 healthy controls was genotyped using the TaqMan probe, and the different distributions identified were confirmed by a caseâcontrol association study. RESULTS: Expression of CYBA mRNA and protein in the placenta of pregnant women with PE was significantly increased compared to controls. Expression of CYBA mRNA was also increased in HTR-8/SVneo cells collected after 24 h of separate stimulation with cobalt chloride and TNF-α. There was no significant difference in the distribution of the C242T locus genotype and CYBA allele frequency between the case group and control group (P > 0.05). CONCLUSIONS: CYBA may play a role in the pathogenesis of oxidative stress in PE, in which it may function by cooperating with the TNF-α-related inflammatory pathway. Although no discrepant distribution of the CYBA C242T polymorphism in the Chinese population was detected, it is necessary to examine multiple CYBA SNPs in diverse populations and perform functional experiments to gain further insights into its pathogenesis.
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A green and robust route by in-situ generation of CeO2 beads around the carbon nanotubes (CNTs) in supercritical carbon dioxide (scCO2) was developed in this work to synthesize hollow CeO2 nanobeads with improved catalytic activity for CO oxidation.
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OBJECTIVE: To investigate whether IL-12B rs3212227 was associated with susceptibility to PE (preeclampsia) in Chinese Han women. METHODS: We enrolled 1000 PE patients and 1287 controls and performed rs3212227 genotyping by PCR-restriction fragment length polymorphism. RESULTS: No significant differences in genetic distributions of IL-12B rs3212227 were observed between cases and controls (χ(2) = 4.62, p = 0.10 by genotype; χ(2) = 0.03, p = 0.87 by allele). There were also no significant differences in genotypic and allelic frequencies between mild/severe or early/late-onset PE and control subgroups. CONCLUSION: Our data suggested that IL-12B rs3212227 might not be a critical risk factor for PE in Chinese Han women.
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Subunidade p40 da Interleucina-12/genética , Pré-Eclâmpsia , Adulto , Alelos , China/epidemiologia , Feminino , Frequência do Gene , Predisposição Genética para Doença , Genótipo , Humanos , Polimorfismo de Nucleotídeo Único , Pré-Eclâmpsia/epidemiologia , Pré-Eclâmpsia/genética , GravidezRESUMO
This paper investigates the capacity of ChatGPT, an advanced language model created by OpenAI, to mitigate the side effects encountered by learners in Personal Learning Environments (PLEs) within higher education. A series of semi-structured interviews were conducted with six professors and three Information and Communication Technology (ICT) experts. Employing thematic analysis, the interview data were assessed, revealing that the side effects stemming from the learner and learning perspectives could be primarily categorized into cognitive, non-cognitive, and metacognitive challenges. The findings of the thematic analysis indicate that, from a cognitive standpoint, ChatGPT can generate relevant and trustworthy information, furnish personalized learning resources, and facilitate interdisciplinary learning to fully actualize learners' potential. Moreover, ChatGPT can aid learners in cultivating non-cognitive skills, including motivation, perseverance, self-regulation, and self-efficacy, as well as metacognitive abilities such as self-determination, self-efficacy, and self-regulation, by providing tailored feedback, fostering creativity, and stimulating critical thinking activities. This study offers valuable insights for integrating artificial intelligence technologies to unleash the full potential of PLEs in higher education.
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Inteligência Artificial , Metacognição , Criatividade , Aprendizagem , PensamentoRESUMO
RATIONALE: Diagnosis of posterior circulation stoke is difficult, and magnetic resonance imaging especially diffusion-weighted imaging is superior to computed tomography. Persistent hiccups, sinus arrest, and post-hiccup syncope are extremely rare symptoms of posterior circulation stroke. However, there is no effective treatment for persistent hiccup. PATIENT CONCERN AND DIAGNOSIS: We describe a case of a 58-year-old hypertensive woman diagnosed with acute posterior circulation stroke who presented with persistent hiccups, sinus arrest, and post-hiccup syncope. Diffusion-weighted imaging revealed a high-intensity signal involving the left middle cerebellar peduncle and several spotted areas in the right occipital lobe. INTERVENTIONS: Permanent pacemaker was implanted and metoclopramide was used to treat persistent hiccups. OUTCOME: The patient developed aspiration pneumonia and morbid dysphoria, and eventually died. LESSONS: Posterior circulation stroke can cause cardiovascular and respiratory dysfunction. Consequently, physicians should pay more attention to posterior circulation lesions in patients with arrhythmia and syncope. An effective method to treat persistent hiccups is urgently needed.
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Soluço , Acidente Vascular Cerebral , Feminino , Humanos , Pessoa de Meia-Idade , Soluço/terapia , Síncope/diagnóstico , Acidente Vascular Cerebral/complicações , Imageamento por Ressonância Magnética/efeitos adversos , Imagem de Difusão por Ressonância MagnéticaRESUMO
OBJECTIVE: To investigate the association between polymorphism of rs3212986 in ERCC1 and susceptibility to preeclampsia in the Chinese Han population. STUDY DESIGN: Samples of 642 preeclampsia patients and 877 controls were genotyped for rs3212986 using TaqMan allele discrimination assays. The genetic and allelic distributions between the groups were compared by Pearson's χ2 test. RESULT: There was no difference in the genotypic and allelic distributions between cases and controls (P>0.05). Statistical difference in genotypic frequencies of rs3212986 was observed between early-onset and late-onset preeclampsia (χ2=6.985, P=0.030). When subdivided into TT/GG+GT groups, a significant difference was found between early-onset and late-onset preeclampsia (χ2=6.528, P=0.011, OR=2.011, 95%CI 1.167-3.465). CONCLUSION: The polymorphisms of rs3212986 showed no association with the risk of preeclampsia in the Chinese Han population. However, the difference in the genotypic distribution between early-onset and late-onset preeclampsia suggest the need for future studies.
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Povo Asiático , Proteínas de Ligação a DNA/genética , Endonucleases/genética , Predisposição Genética para Doença , Polimorfismo de Nucleotídeo Único , Pré-Eclâmpsia/genética , Adulto , Povo Asiático/genética , China , Feminino , Humanos , Gravidez , Fatores de RiscoRESUMO
The aim of the present study was to investigate the association of human leukocyte antigen (HLA) gene polymorphism and clinical phenotypes of patients with mesangial proliferative glomerulonephritis (MsPGN). The genotyping of HLA-A, HLA-B and HLA-DRB1 alleles was detected in 1,536 consecutive MsPGN patients during the previous five years and 2,027 age- and gender-matched healthy individuals by using the polymerase chain reaction-sequence-specific primers method. The clinical and pathological data of the patients were collected and the genotype frequencies (GF) and odds ratio (OR) were analyzed. The allele frequencies of HLA-A*23, A*25, B*15, B*40, B*53 and DRB1*18 were significantly higher in MsPGN patients than in the controls (P<0.05). These alleles were considered as the suspected susceptibility genes (SSG) for MsPGN. Of note, results of the follow-up survey study demonstrated poorer prognosis of patients with SSG than those without SSG. On the other hand, the frequencies of A*32, A*33, B*50, B*58, B*60, B*71, DRB1*16 were lower in MsPGN patients than in the controls (P<0.05). However, the alleles A*20, A*22, A*35, A*36, A*38, B*21, B*73 and B*78 were not expressed in MsPGN patients. HLA gene polymorphism is associated with hereditary susceptibility to MsPGN. Therefore, there might be corresponding susceptibility and protective genes associated with MsPGN.