Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 78
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
Mar Drugs ; 22(2)2024 Jan 24.
Artigo em Inglês | MEDLINE | ID: mdl-38393028

RESUMO

Oxidative stress, which damages cellular components and causes mitochondrial dysfunction, occurs in a variety of human diseases, including neurological disorders. The clearance of damaged mitochondria via mitophagy maintains the normal function of mitochondria and facilitates cell survival. Astaxanthin is an antioxidant known to have neuroprotective effects, but the underlying mechanisms remain unclear. This study demonstrated that astaxanthin inhibited H2O2-induced apoptosis in SH-SY5Y cells by ameliorating mitochondrial damage and enhancing cell survival. H2O2 treatment significantly reduced the levels of activated Akt and mTOR and induced mitophagy, while pretreatment with astaxanthin prevented H2O2-induced inhibition of Akt and mTOR and attenuated H2O2-induced mitophagy. Moreover, the inhibition of Akt attenuated the protective effect of astaxanthin against H2O2-induced cytotoxicity. Taken together, astaxanthin might inhibit H2O2-induced apoptosis by protecting mitochondrial function and reducing mitophagy. The results also indicate that the Akt/mTOR signaling pathway was critical for the protection of astaxanthin against H2O2-induced cytotoxicity. The results from the present study suggest that astaxanthin can reduce neuronal oxidative injury and may have the potential to be used for preventing neurotoxicity associated with neurodegenerative diseases.


Assuntos
Neuroblastoma , Proteínas Proto-Oncogênicas c-akt , Humanos , Proteínas Proto-Oncogênicas c-akt/metabolismo , Peróxido de Hidrogênio/toxicidade , Mitofagia , Neuroblastoma/tratamento farmacológico , Apoptose , Estresse Oxidativo , Serina-Treonina Quinases TOR/metabolismo , Linhagem Celular Tumoral , Espécies Reativas de Oxigênio/metabolismo , Xantofilas
2.
J Sleep Res ; 32(2): e13808, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36529887

RESUMO

During pregnancy many women may experience negative emotions and sleep disturbances. This systematic review and meta-analysis was conducted to assess the efficacy of cognitive behavioural therapy for insomnia (CBT-I) or sleep disturbance in pregnant women. From the earliest available publications to 15 April 2022, seven electronic literature databases were searched: PubMed, Web of Science, Cochrane Library, Embase, Chinese National Knowledge Infrastructure, Wanfang Data, and VIP Database for Chinese Science and Technology Journal. Randomised controlled trials of CBT-I in pregnant women with insomnia or sleep disorders were included. The methodological bias of the included studies was assessed using the Cochrane risk of bias tool. The meta-analysis was performed using RevMan 5.4 software. Stata Statistical Software: Release 15 was used for sensitivity analysis and publication bias. We included eight randomised controlled trials involving 743 pregnant women. Meta-analysis showed that, compared with the control group, CBT-I significantly improved the Insomnia Severity Index (mean difference [MD] = -4.25, 95% confidence interval [CI, -6.32, -2.19], p < 0.001), The Pittsburgh Sleep Quality Index (MD = -3.30, 95% CI [-4.81, -1.79], p < 0.001), sleep onset latency (standardised mean difference [SMD] = -1.25, 95% CI [-2.01, -0.50], p = 0.001), anxiety (SMD = -0.99, 95% CI [-1.32, -0.67], p < 0.001), and depression (SMD = -0.40, 95% CI [-0.72, -0.07], p = 0.02). No significant differences were found in total sleep time (SMD = 0.31, 95% CI [-0.54, 1.17], p = 0.47) and sleep efficiency (SMD = 0.80, 95% CI [-0.53, 2.13], p = 0.24). CBT-I significantly improved pregnant women's sleep quality, insomnia severity, depression, and anxiety. This meta-analysis provides evidence that CBT-I is valid for insomnia or sleep disturbances during pregnancy.


Assuntos
Terapia Cognitivo-Comportamental , Gestantes , Transtornos do Sono-Vigília , Feminino , Humanos , Gravidez , Gestantes/psicologia , Duração do Sono , Distúrbios do Início e da Manutenção do Sono/psicologia , Distúrbios do Início e da Manutenção do Sono/terapia , Transtornos do Sono-Vigília/psicologia , Transtornos do Sono-Vigília/terapia , Ensaios Clínicos Controlados Aleatórios como Assunto
3.
Apoptosis ; 27(11-12): 1004-1014, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-36103026

RESUMO

Cuproptosis is a newly discovered cell death induced by excessive copper in mitochondria distinct from any known forms of apoptosis. Role of cuproptosis has not been well-reported in cancer, especially in clear-cell renal cell carcinoma (ccRCC). We comprehensively interrogated cuproptotic gene signature in ccRCC by reproducing multi-omics datasets and found cuproptosis was decreased in ccRCC compared with normal kidney. Cuproptosis identified a subgroup with significantly better prognosis. Functional annotation supported increased tricarboxylic acid cycle activity and decreased hypoxia signaling corroborated by metabolomics. Cuproptotic tumors showed decreased angiogenesis but were sensitive to Sunitinib and Sorafenib. Cuproptotic level in ccRCC cell lines showed robust negative correlation with copper ionophore Elesclomol. All findings support a respiratory subtype of ccRCC identified by cuproptosis.


Assuntos
Carcinoma de Células Renais , Neoplasias Renais , Humanos , Carcinoma de Células Renais/genética , Carcinoma de Células Renais/metabolismo , Cobre , Apoptose/genética , Neoplasias Renais/metabolismo , Sunitinibe
4.
Clin Nephrol ; 97(6): 328-338, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35142283

RESUMO

Deletions involving the TSC2 and PKD1 genes lead to tuberous sclerosis complex (TSC) and autosomal dominant polycystic kidney disease (ADPKD), which is known as TSC2-PKD1 contiguous gene deletion syndrome (PKDTS). PKDTS leads to severe symptoms and death. There are few reported cases of PKDTS, the phenotypic descriptions are poor, and detailed statistics and descriptions of the time of onset and prognosis of PKDTS are lacking. This is the first study to report on the clinical data of PKDTS patients in China. We analyzed all cases including Chinese individuals and summarized the clinical manifestations and genetic characteristics. Our study was the first to use a combination of exome sequencing and multiplex ligation-dependent probe amplification (MLPA) to screen and diagnose PKDTS. We found that many PKDTS patients have the following: multiple renal cysts; angiofibromas (≥ 3) or fibrous cephalic plaque; subependymal nodules; seizures; intellectual disability. PKDTS develops into polycystic kidney disease from before birth to 17 years old and the time of occurrence of end-stage renal disease or dialysis was 21.62 ± 12.87 years of age, which was significantly earlier than in ADPKD caused by PKD1 mutation. Compared with non-Chinese individuals of diverse ancestry, Chinese people have significant differences in the clinical characteristics, including ungual fibromas (≥ 2), and shagreen patch. Five novel large deletions were identified in Chinese. We found no relationship between the clinical phenotype and the genotype. We combined exome sequencing with MLPA to develop a diagnostic method for PKDTS.


Assuntos
Rim Policístico Autossômico Dominante , Rim Policístico Autossômico Recessivo , Canais de Cátion TRPP/genética , Proteína 2 do Complexo Esclerose Tuberosa/genética , Adolescente , Adulto , Criança , Deleção de Genes , Estudos de Associação Genética , Humanos , Mutação , Rim Policístico Autossômico Dominante/diagnóstico , Rim Policístico Autossômico Dominante/genética , Rim Policístico Autossômico Recessivo/genética , Esclerose Tuberosa , Proteínas Supressoras de Tumor/genética , Adulto Jovem
5.
J Biol Chem ; 295(31): 10726-10740, 2020 07 31.
Artigo em Inglês | MEDLINE | ID: mdl-32532820

RESUMO

Mediator complex subunit 16 (MED16) is a component of the mediator complex and functions as a coactivator in transcriptional events at almost all RNA polymerase II-dependent genes. In this study, we report that the expression of MED16 is markedly decreased in papillary thyroid cancer (PTC) tumors compared with normal thyroid tissues. In vitro, MED16 overexpression in PTC cells significantly inhibited cell migration, enhanced sodium/iodide symporter expression and iodine uptake, and decreased resistance to radioactive 131I (RAI). Conversely, PTC cells in which MED16 had been further knocked down (MED16KD) exhibited enhanced cell migration, epithelial-mesenchymal transition, and RAI resistance, accompanied by decreased sodium/iodide symporter levels. Moreover, cell signaling through transforming growth factor ß (TGF-ß) was highly activated after the MED16 knockdown. Similar results were obtained in MED12KD PTC cells, and a co-immunoprecipitation experiment verified interactions between MED16 and MED12 and between MED16 and TGF-ßR2. Of note, the application of LY2157299, a potent inhibitor of TGF-ß signaling, significantly attenuated MED16KD-induced RAI resistance both in vitro and in vivo In conclusion, our findings indicate that MED16 reduction in PTC contributes to tumor progression and RAI resistance via the activation of the TGF-ß pathway.


Assuntos
Radioisótopos do Iodo/farmacologia , Complexo Mediador/metabolismo , Proteínas de Neoplasias/metabolismo , Tolerância a Radiação , Transdução de Sinais , Câncer Papilífero da Tireoide , Neoplasias da Glândula Tireoide , Fator de Crescimento Transformador beta/metabolismo , Animais , Linhagem Celular Tumoral , Feminino , Humanos , Complexo Mediador/genética , Camundongos , Camundongos Nus , Proteínas de Neoplasias/genética , Tolerância a Radiação/efeitos dos fármacos , Tolerância a Radiação/efeitos da radiação , Transdução de Sinais/efeitos dos fármacos , Transdução de Sinais/efeitos da radiação , Câncer Papilífero da Tireoide/metabolismo , Câncer Papilífero da Tireoide/patologia , Câncer Papilífero da Tireoide/radioterapia , Neoplasias da Glândula Tireoide/genética , Neoplasias da Glândula Tireoide/metabolismo , Neoplasias da Glândula Tireoide/patologia , Neoplasias da Glândula Tireoide/radioterapia
6.
Cancer Sci ; 112(7): 2905-2914, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33931925

RESUMO

Traditional histopathology performed by pathologists by the naked eye is insufficient for accurate and efficient diagnosis of bladder cancer (BCa). We collected 643 H&E-stained BCa images from Shanghai General Hospital and The Cancer Genome Atlas (TCGA). We constructed and cross-verified automatic diagnosis and prognosis models by performing a machine learning algorithm based on pathomics data. Our study indicated that high diagnostic efficiency of the machine learning-based diagnosis model was observed in patients with BCa, with area under the curve (AUC) values of 96.3%, 89.2%, and 94.1% in the training cohort, test cohort, and external validation cohort, respectively. Our diagnosis model also performed well in distinguishing patients with BCa from patients with glandular cystitis, with an AUC value of 93.4% in the General cohort. Significant differences were found in overall survival in TCGA cohort (hazard ratio (HR) = 2.09, 95% confidence interval (CI): 1.56-2.81, P < .0001) and the General cohort (HR = 5.32, 95% CI: 2.95-9.59, P < .0001) comparing patients with BCa of high risk vs low risk stratified by risk score, which was proved to be an independent prognostic factor for BCa. The integration nomogram based on our risk score and clinicopathologic characters displayed higher prediction accuracy than current tumor stage/grade systems, with AUC values of 77.7%, 83.8%, and 81.3% for 1-, 3-, and 5-y overall survival prediction of patients with BCa. However, prospective studies are still needed for further verifications.


Assuntos
Aprendizado de Máquina , Neoplasias da Bexiga Urinária/mortalidade , Neoplasias da Bexiga Urinária/patologia , Algoritmos , Área Sob a Curva , Cistite/diagnóstico , Cistite/patologia , Diagnóstico Diferencial , Humanos , Estimativa de Kaplan-Meier , Gradação de Tumores , Estadiamento de Neoplasias , Nomogramas , Modelos de Riscos Proporcionais , Análise de Regressão , Fatores de Risco , Neoplasias da Bexiga Urinária/diagnóstico
7.
J Neurosci Res ; 99(4): 1108-1119, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33368535

RESUMO

The functional connectivity (FC) between multiple brain regions during tasks is currently gradually being explored with functional near-infrared spectroscopy (fNIRS). However, the FC present during grip force tracking tasks performed under visual feedback remains unclear. In the present study, we used fNIRS to measure brain activity during resting states and grip force tracking tasks at 25%, 50%, and 75% of maximum voluntary contraction (MVC) in 11 healthy subjects, and the activity was measured from four target brain regions: the left prefrontal cortex (lPFC), right prefrontal cortex (rPFC), left sensorimotor cortex (lSMC), and right sensorimotor cortex (rSMC). We determined the FC between these regions utilizing three different methods: Pearson's correlation method, partial correlation method, and a pairwise maximum entropy model (MEM). The results showed that the FC of lSMC-rSMC and lPFC-rPFC (interhemispheric homologous pairs) were significantly stronger than those of other brain region pairs. Moreover, FC of lPFC-rPFC was strengthened during the 75% MVC task compared to the other task states and the resting states. The FC of lSMC-lPFC and rSMC-rPFC (intrahemispheric region pairs) strengthened with a higher task load. The results provided new insights into the FC between brain regions during visuo-guided grip force tracking tasks.


Assuntos
Encéfalo/fisiologia , Força da Mão/fisiologia , Desempenho Psicomotor/fisiologia , Espectroscopia de Luz Próxima ao Infravermelho/métodos , Adulto , Mapeamento Encefálico/métodos , Interpretação Estatística de Dados , Feminino , Mãos , Voluntários Saudáveis , Humanos , Masculino , Córtex Pré-Frontal/fisiologia , Córtex Sensório-Motor/fisiologia , Análise e Desempenho de Tarefas
8.
Clin Nephrol ; 96(3): 165-174, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-33993910

RESUMO

As the most frequent inherited tubulopathy, Gitelman syndrome (GS), has an incidence that has increased worldwide. The distribution of SLC12A3 gene mutation hotspots deserves exploration. In addition, GS is not a benign syndrome; however, the diagnostic process of GS has not yet been completely detailed. MATERIALS AND METHODS: We report two cases of GS pedigrees involving two previously unreported mutations, c. 676G>A, p. A226T and c. 421G>A, p. G141R, in the SLC12A3 gene and reviewed relevant literature. We searched the literature for nucleotide of SLC12A3 in PubMed and other databases as of April 20, 2020. RESULTS: A total of 1,794 detected mutated alleles in 939 patients worldwide were included in this study. Splicing mutations and p. Gly741Arg were mutation hotspots in a European population. P. Leu858His and p. Thr60Met were mutation hotspots in an Asian population. P. Leu858His and p. Thr180Lys were considered mutation hotspots in the Japanese population, while p. Thr60Met and p. Asp486Asn were considered mutation hotspots in the Chinese population. CONCLUSION: Our results identified two novel mutation sites (c. 676G>A, p. A226T and c. 421G>A, p. G141R), if their pathogenicity was determined this could contribute to the enrichment of database resources on GS. Our study has compiled the most comprehensive SLC12A3 gene mutation database in the world thus far to reveal that different regions have different mutation hotspots in SLC12A3. Moreover, the establishment of a diagnostic process for GS has important implications for confirmed cases.


Assuntos
Síndrome de Gitelman , Alelos , Testes Genéticos , Síndrome de Gitelman/diagnóstico , Síndrome de Gitelman/genética , Humanos , Mutação , Linhagem , Membro 3 da Família 12 de Carreador de Soluto/genética
9.
BMC Infect Dis ; 20(1): 710, 2020 Sep 29.
Artigo em Inglês | MEDLINE | ID: mdl-32993524

RESUMO

BACKGROUND: Since pneumonia caused by coronavirus disease 2019 (COVID-19) broke out in Wuhan, Hubei province, China, tremendous infected cases has risen all over the world attributed to its high transmissibility. We aimed to mathematically forecast the inflection point (IFP) of new cases in South Korea, Italy, and Iran, utilizing the transcendental model from China. METHODS: Data from reports released by the National Health Commission of the People's Republic of China (Dec 31, 2019 to Mar 5, 2020) and the World Health Organization (Jan 20, 2020 to Mar 5, 2020) were extracted as the training set and the data from Mar 6 to 9 as the validation set. New close contacts, newly confirmed cases, cumulative confirmed cases, non-severe cases, severe cases, critical cases, cured cases, and death were collected and analyzed. We analyzed the data above through the State Transition Matrix model. RESULTS: The optimistic scenario (non-Hubei model, daily increment rate of - 3.87%), the cautiously optimistic scenario (Hubei model, daily increment rate of - 2.20%), and the relatively pessimistic scenario (adjustment, daily increment rate of - 1.50%) were inferred and modeling from data in China. The IFP of time in South Korea would be Mar 6 to 12, Italy Mar 10 to 24, and Iran Mar 10 to 24. The numbers of cumulative confirmed patients will reach approximately 20 k in South Korea, 209 k in Italy, and 226 k in Iran under fitting scenarios, respectively. However, with the adoption of different diagnosis criteria, the variation of new cases could impose various influences in the predictive model. If that happens, the IFP of increment will be earlier than predicted above. CONCLUSION: The end of the pandemic is still inapproachable, and the number of confirmed cases is still escalating. With the augment of data, the world epidemic trend could be further predicted, and it is imperative to consummate the assignment of global medical resources to curb the development of COVID-19.


Assuntos
Betacoronavirus , Infecções por Coronavirus/epidemiologia , Modelos Teóricos , Pneumonia Viral/epidemiologia , COVID-19 , China/epidemiologia , Infecções por Coronavirus/virologia , Previsões/métodos , Humanos , Irã (Geográfico)/epidemiologia , Itália/epidemiologia , Pandemias , Pneumonia Viral/virologia , Prognóstico , República da Coreia/epidemiologia , SARS-CoV-2
10.
BMC Pediatr ; 20(1): 146, 2020 04 02.
Artigo em Inglês | MEDLINE | ID: mdl-32241251

RESUMO

BACKGROUND: Group B streptococcus (GBS)-induced invasive disease is a major cause of illness and death among infants aged under 90 days in China; however, invasive GBS infection remains unknown in China. We aimed to describe the serotype and genotype distributions of early-onset disease (EOD) and late-onset disease (LOD), and to show the clinical correlations among various GBS serotypes and genotypes obtained from infants with invasive GBS infections. METHODS: Between June 1, 2016 and June 1, 2018, 84 GBS strains were collected from patients younger than 90 days at seven Chinese hospitals. Clinical data were retrospectively reviewed. GBS serotyping was conducted and multi-locus sequence typing was performed. RESULTS: Serotypes Ia, Ib, II, III, and V were detected. Serotype III (60.71%) was the most common, followed by Ia (16.67%) and Ib (14.29%). Intrapartum temperature ≥ 37.5 °C, chorioamnionitis, and mortality were noted in 28.57, 42.86, and 28.57% of patients with serotype Ia, respectively, and these rates were higher than those in patients with serotypes Ib and III (P = 0.041, P = 0.031, and P = 0.023, respectively). The incidence of respiratory distress was lower (P = 0.039) while that of purulent meningitis was higher (P = 0.026) in the serotype III group. Eighteen sequence types were detected among isolates, and ST17 [42.86% (36/84)] was the most prevalent. CONCLUSIONS: GBS isolates belonging to serotypes Ia, Ib, and III are common in southern mainland China, and ST17 is highly prevalent. Differences were found in the clinical manifestations of invasive GBS disease induced by serotypes Ia and III.


Assuntos
Infecções Estreptocócicas , Idoso , Antibacterianos/uso terapêutico , China/epidemiologia , Feminino , Genótipo , Humanos , Lactente , Recém-Nascido , Masculino , Tipagem de Sequências Multilocus , Gravidez , Estudos Retrospectivos , Sorogrupo , Sorotipagem , Infecções Estreptocócicas/diagnóstico , Infecções Estreptocócicas/tratamento farmacológico , Infecções Estreptocócicas/epidemiologia , Streptococcus agalactiae/genética
11.
Acta Pharmacol Sin ; 38(8): 1150-1160, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28552911

RESUMO

Chronic periodontitis (CP) is one of the most common oral diseases, which causes alveolar bone absorption and tooth loss in adults. In this study we aimed to investigate the potential of plumbagin (PL), a widely-investigated active compound extracted from the traditional Chinese herb Plumbago zeylanica L in treating CP. Human periodontal ligament stem cells (PDLSCs) were used for in vitro studies, whereas an animal model of CP was established in SD rats by ligation+Porphyromonas gingivalis (Pg) stimulation. The rats were injected with PL (2, 4, and 6 mg·kg-1·d-1, ip) for 4 weeks. Treatment of PDLSCs with TNF-α (10 ng/mL) markedly stimulated the expression of the proinflammatory cytokines TNF-α, IL-1ß and IL-6, as well as the chemokines CCL-2 and CCL-5, which were dose-dependently suppressed by co-treatment with PL (1.25-5 µmol/L). Furthermore, PL (3.75 µmol/L) markedly suppressed TNF-α-induced activation of the MAPK, NF-κB and JAK/STAT signaling pathways in PDLSCs. In consistence with the in vitro studies, PL administration significantly decreased the expression of TNF-α, IL-1ß and IL-6 in gingiva of the rat with CP, with the dosage 4 mg·kg-1·d-1 showing the best anti-inflammatory effect. Moreover, PL administration decelerated bone destruction in the rat with CP, evidenced by the aveolar bone loss (ABL) and H&E staining results. In conclusion, PL suppresses CP progression in rats by downregulating the expressions of TNF-α, IL-1ß and IL-6 and inhibiting the MAPK, NF-κB and JAK/STAT signaling pathways.


Assuntos
Anti-Inflamatórios/uso terapêutico , Periodontite Crônica/tratamento farmacológico , Interleucina-1beta/metabolismo , Interleucina-6/metabolismo , Naftoquinonas/uso terapêutico , Fator de Necrose Tumoral alfa/metabolismo , Animais , Quimiocina CCL2/metabolismo , Quimiocina CCL5/metabolismo , Relação Dose-Resposta a Droga , Regulação para Baixo/efeitos dos fármacos , Feminino , Periodonto/efeitos dos fármacos , Periodonto/metabolismo , Ratos , Ratos Sprague-Dawley
12.
Hu Li Za Zhi ; 62(6): 112-7, 2015 Dec.
Artigo em Zh | MEDLINE | ID: mdl-26645451

RESUMO

Epidermolysis bullosa (EB) is a rare hereditary, chromosomal disease of the skin. Life-threatening septicemia may result if appropriate care is not provided to alleviate the extensive skin irritation that is the main symptom of this disease. This case report describes the experience of the author in nursing a wound area on a newborn that was suspected of being caused by EB. This wound area comprised blisters and peeling skin that covered 30% of the entire skin area of the infant. A holistic assessment conducted from December 1st, 2013 to January 7th, 2014 revealed that this large of an area of damage to the skin and mucosa considerably complicated the task of wound care and caused severe pain to the infant. In response to the special needs of this case, our medical team conducted a literature review of wound care for this rare disease. Based on the suggestions of previous empirical studies, nursing measures for the skin, mucosa, and wounds of the newborn were then administered through inter-team cooperation. These actions effectively reduced the pain, controlled the infection, and accelerated wound healing. In addition, progressive contact was used to guide the primary caregivers of the newborn, which alleviated their physical and psychological stresses effectively. The caregivers were educated systematically on wound care and guided to learn techniques for nursing and dressing wounds. Thus, these caregivers were better prepared to continue providing wound care at home. We suggest that healthcare professionals reference empirical studies when providing care to EB newborns during the acute-care period and provide wound care and supportive therapies to control the occurrence of complications using a multidisciplinary team-care model. In addition, social resources should be used effectively in nursing care plans to mitigate the effect of this rare disease on families.


Assuntos
Epidermólise Bolhosa/enfermagem , Humanos , Recém-Nascido , Masculino , Cicatrização
13.
Eur J Pharmacol ; 980: 176840, 2024 Jul 20.
Artigo em Inglês | MEDLINE | ID: mdl-39038636

RESUMO

Mitogen-activated protein kinase (MAPK) signalling is vitally important in tumour development and progression. This study is the first to comprehensively analyse the role of MAPK-family genes in the progression, prognosis, immune-cell infiltration, methylation, and potential therapeutic value drug candidates in ccRCC. We identified a novel prognostic panel of six MAPK-signature genes (MAP3K12, MAP3K1, MAP3K5, MAPK1, MAPK8, MAPK9), and introduced a robust MAPK-signature risk model for predicting ccRCC prognosis. Model construction, evaluation, and external validation using datasets from the Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) database demonstrated its stability, as well as high sensitivity and specificity. Enrichment analysis suggested the participation of immune-mediated mechanism in MAPK dysregulation in ccRCC. Immune-infiltration analysis confirmed the relationship and revealed that the MAPK-signature risk model might stratify immunotherapy response in ccRCC, which was verified in drug sensitivity analysis and validated in external ccRCC immunotherapy dataset (GSE67501). Potential therapeutic drug predictions for key MAPKs using DSigDB, Network Analyst, CTD, and DGIdb were subsequently verified by molecular docking with AutoDock Vina and PyMol. Mendelian randomization further demonstrated the possibilities of the MAPK-signature genes as targets for therapeutic drugs in ccRCC. Methylation analysis using UALCAN and MethSurv revealed the participation of epigenetic modifications in dysregulation and survival difference of MAPK pathway in ccRCC. Among the key MAPKs, MAP3K12 exhibited the highest significance, indicating its independent prognostic value as single gene in ccRCC. Knockout and overexpression validation experiments in vitro and in vivo found that MAP3K12 acted as a promoter of tumour progression in RCC, suggesting a pivotal role for MAP3K12 in the proliferation, migration, and invasion of RCC cells. Our findings proposed the potential of MAPK-signature genes as biomarkers for prognosis and therapy response, as well as targets for therapeutic drugs in ccRCC.

14.
Heliyon ; 10(10): e30565, 2024 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-38774324

RESUMO

Work-related use of information and communication technologies after-hours (W_ICTs) blurs the boundaries between work and non-work domains, representing a typical boundary-crossing behavior that affects employees' lives and organizational development. Drawing on the Job Demands-Resources theory, this study develops a dynamic curvilinear model of the impact of W_ICTs on work procrastination, considering intrinsic motivation (self-efficacy and enjoyment) and regulatory focus (prevention focus). Empirical testing of the research hypotheses is conducted through a survey involving 817 employees with standard working hours (e.g. 9 a.m. to 5 p.m.). The results indicate that W_ICTs can be regarded as both inhibitors and promoters, with a U-shaped impact on work procrastination and an inverted U-shaped effect on self-efficacy and enjoyment. The mediating roles of self-efficacy and enjoyment are significant. Moreover, prevention focus moderates the relationship between W_ICTs and enjoyment, whereas the moderating effect between W_ICTs and self-efficacy is insignificant. This dynamic curvilinear relationship may explain the inconsistent results of prior studies regarding the relationship between W_ICTs and employees' negative behaviors. It contributes to expanding research on the outcomes of W_ICTs and the antecedents of work procrastination. Moreover, the proposed influence mechanism between W_ICTs and work procrastination has not been established from the perspective of intrinsic motivation and prevention focus. Hence, this study responds to scholars' calls and adds to the existing research on how W_ICTs affect work procrastination. These research findings enhance the current understanding of the effects of W_ICTs and offer valuable insights for organizations to effectively manage W_ICTs and address work procrastination behavior in practice.

15.
Heliyon ; 10(9): e30048, 2024 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-38726191

RESUMO

The identification of accounting fraud is an important measure to safeguard the interests of stakeholders and ensure the long-term development of the company. The current traditional methods for identifying accounting fraud rely on manual review and judgment, lacking objectivity and accuracy. In order to improve the accuracy of accounting fraud identification, improve identification efficiency and objectivity, this article combines smart city information technology to conduct in-depth research on data mining algorithms for accounting fraud identification. This article first provides a brief overview of smart cities and information technology, then introduces the basic theory of accounting fraud identification, and finally implements accounting fraud identification through k-means clustering mining algorithm. The data is divided into k clusters, and abnormal clusters are identified by checking the characteristics and attributes of each cluster. Compared with traditional rule-based and pattern based methods, this approach can more flexibly adapt to different types and forms of fraud, and can discover unknown patterns of fraud. In the experiment, this article used electronic data collection, analysis, and retrieval systems on the websites of the Shanghai Stock Exchange and Shenzhen Stock Exchange to collect 641 annual reports and financial characteristics from 62 listed companies that engaged in financial statement fraud and 84 companies that were not reported to have financial statement fraud from 2012 to 2021 as test samples. The results were tested and analyzed from several aspects, including the number of misjudgments, misjudgment rate, and ROC curve. The final test results show that compared to traditional accounting fraud identification methods, the comprehensive misjudgment rate of data mining algorithms based on smart cities has decreased by 3 %. The conclusion indicates that data mining algorithms used in smart city information technology to identify accounting fraud can help improve the accuracy of accounting fraud, improve audit objectivity and effectiveness.

16.
Environ Microbiol Rep ; 16(2): e13244, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38544360

RESUMO

A small pigmented flagellate, Micromonas, is prevalently distributed in coastal and pelagic waters. However, there have been few studies conducted to quantify their abundance in the marginal seas of the Northwest Pacific Ocean. In this study, we used fluorescent in situ hybridization with tyramide signal amplification (TSA-FISH) to reveal the spatial distribution of Micromonas in the northern South China Sea (SCS). On average, the abundance of Micromonas was 317 cells mL-1, with the average proportions in the nanoflagellates (NF) and photosynthetic picoeukaryotes (PPE) communities being 10.94% and 15.39%, respectively. This indicates a wide distribution and dominance of this genus in the studied area. The relationships between Micromonas abundance and various environmental factors suggested that biotic correlations play more important roles than physicochemical filtering on Micromonas assemblage. This may indicate a broad environmental adaptation spectrum of this genus through its flexibility in terms of resource acquisition strategies. In summary, this study provides insight into the spatial distribution pattern of Micromonas and highlights its crucial contribution to the composition of NFs and PPE communities, which rely on biological interaction to respond to the changing environmental conditions in the northern SCS.


Assuntos
Clorófitas , Fotossíntese , Hibridização in Situ Fluorescente , Oceanos e Mares , Oceano Pacífico , China , Água do Mar
17.
Zootaxa ; 5406(3): 474-480, 2024 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-38480138

RESUMO

A new species of mealybug (Hemiptera: Coccomorpha: Pseudococcidae), Paraputo nanlingensis Li & Wu, sp. n., is recorded on Fagaceae from Guangdong Province, China. The adult female is described and illustrated, and an identification key is provided to separate the adult females of Paraputo species known from China.


Assuntos
Fagaceae , Hemípteros , Feminino , Animais , China
18.
Medicine (Baltimore) ; 103(12): e37585, 2024 Mar 22.
Artigo em Inglês | MEDLINE | ID: mdl-38518026

RESUMO

Poor functional outcome is associated with perihematomal edema (PHE) expansion after intracerebral hemorrhage (ICH). The inflammatory response is crucial for the onset and progression of PHE. This study aimed to determine the connection between admission neutrophil-lymphocyte ratio (NLR) and early PHE development. We retrospectively analyzed patients with ICH admitted to the Chaohu Affiliated Hospital of Anhui Medical University from January 2021 to December 2022. The primary outcome measure was absolute PHE, defined as the volume of the follow-up PHE minus admission PHE. A semiautomated measurement tool (3D Slicer) was used to calculate the volumes of cerebral hematoma and cerebral edema. Spearman's correlation analysis determined the relationship between NLR and absolute PHE. The multiple linear regression model was constructed to analyze the predictive relation of admission NLR on early PHE expansion. A total of 117 patients were included. The median hematoma and PHE volumes on admission were 9.38 mL (interquartile range [IQR], 4.53-19.54) and 3.54 mL (IQR, 1.33-7.1), respectively. The median absolute PHE was 2.26 mL (IQR, 1.25-4.23), and the median NLR was 3.10 (IQR, 2.26-3.86). Spearman's correlation test showed a positive correlation between admission NLR and absolute PHE (r = .548, P < .001). Multiple linear regression analyses suggested that for every 1-unit increase in admission NLR (B = .176, SE = .043, Beta = .275, P < .001), there was a 0.176 mL increase in absolute PHE. Admission neutrophil-to-lymphocyte ratio (NLR) significantly and positively predicted early perihematomal edema (PHE) expansion.


Assuntos
Edema Encefálico , Neutrófilos , Humanos , Estudos Retrospectivos , Hemorragia Cerebral/complicações , Linfócitos , Edema , Edema Encefálico/complicações , Hematoma/complicações
19.
Zootaxa ; 5418(5): 401-441, 2024 Mar 04.
Artigo em Inglês | MEDLINE | ID: mdl-38480346

RESUMO

The species of Neogreenia MacGillivray (Hemiptera: Coccomorpha: Qinococcidae) are reviewed. The genus is distributed in the Oriental and Palaearctic Regions and now contains seven species. The present study provides updated generic descriptions of all the developmental stages and a brief account of the biology and life cycle of Neogreenia. The genotype, Neogreenia zeylanica (Green, 1896), is redescribed. The following are described and illustrated for the first time: the second-instar nymph, third-instar female, and male third-instar nymph and pupa of N. zizyphi Tang; the second-instar nymph of N. lonicera Wu & Nan; and the second-instar nymph of N. sophorica Wu. Two new species are described and illustrated: Neogreenia ficus Zheng & Wu, sp. n. based on the adult female and Neogreenia tangi Zheng & Wu, sp. n. based on all female instars. These new species bring the total number of described species of Neogreenia to seven. An identification key to all the developmental stages of Neogreenia, and identification keys to species based on adult females and available nymphal instars are provided.


Assuntos
Hemípteros , Feminino , Masculino , Animais , Ninfa , Pupa
20.
Mitochondrial DNA B Resour ; 9(7): 924-928, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39077057

RESUMO

The species of Carpesium lipskyi C.Winkl. 1998 is an important traditional Chinese medicine in China. In this study, the complete chloroplast (cp) genome of C. lipskyi was determined and analyzed. The result showed that the complete cp genome of C. lipskyi was 151,244 bp in length, consisting of a large single-copy (LSC) region of 82,908 bp, a small single-copy (SSC) region of 18,430 bp, and a pair of inverted repeats (IRs) of 24,953 bp. The overall GC content of the C. lipskyi is 37.68%. The species of C. lipskyi possessed 127 genes, including 83 protein-coding genes, 36 transfer RNA genes, and eight ribosomal RNA genes. The present study found that Inula is sister groups with the closest genetic relationship. The obtained knowledge could provide useful information for future phylogenetic, taxonomic, and evolutionary studies on Inuleae.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA