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1.
Int J Pharm ; 663: 124552, 2024 Sep 30.
Artigo em Inglês | MEDLINE | ID: mdl-39111355

RESUMO

Methamphetamine (METH) addiction can damage the central nervous system, resulting in cognitive impairment and memory deficits. Low target effects have limited the utility of anti-addiction drugs because the presence of the blood-brain barrier hinders the effective delivery of drugs to the brain. Angiopep-2 can recognize and target low-density lipoprotein receptor-associated protein 1 (LRP-1) on the surface of cerebral capillary endothelial cells, causing cross-cell phagocytosis, and thus has high blood-brain barrier transport capacity. Resveratrol (RSV) has been found to be a neuroprotective agent in many nervous system diseases. In our study, we modified Angiopep-2 on the surface of the erythrocyte membrane to obtain a modified erythrocyte membrane (Ang-RBCm) and coated RSV-loaded poly(ε-caprolactone)-poly(ethylene glycol) (PCL-PEG) nanoparticles with Ang-RBCm (Ang-RBCm@RSVNPs) to treat METH addiction. Our results showed that Ang-RBCm@RSVNPs can penetrate the blood-brain barrier and accumulate in the brain better than free RSV. Besides, mice treatetd with Ang-RBCm@RSVNPs showed less preference to METH-paired chamber and no noticeable tissue toxicity or abnormality was found in H&E staining images. Electrophysiological experiments demonstrated Ang-RBCm@RSVNPs could elevate synaptic plasticity impaired by METH. These indicated that Ang-RBCm@RSVNPs has better anti-addiction and neuroprotective effects. Therefore, Ang-RBCm@RSVNPs has great potential in the treatment of METH addiction.


Assuntos
Barreira Hematoencefálica , Metanfetamina , Sistemas de Liberação de Fármacos por Nanopartículas , Resveratrol , Resveratrol/administração & dosagem , Resveratrol/farmacocinética , Resveratrol/farmacologia , Resveratrol/química , Animais , Metanfetamina/administração & dosagem , Barreira Hematoencefálica/metabolismo , Barreira Hematoencefálica/efeitos dos fármacos , Camundongos , Sistemas de Liberação de Fármacos por Nanopartículas/química , Masculino , Fármacos Neuroprotetores/administração & dosagem , Fármacos Neuroprotetores/química , Fármacos Neuroprotetores/farmacologia , Camundongos Endogâmicos C57BL , Peptídeos/administração & dosagem , Peptídeos/química , Nanopartículas/administração & dosagem , Transtornos Relacionados ao Uso de Substâncias/tratamento farmacológico , Encéfalo/metabolismo , Encéfalo/efeitos dos fármacos , Sistemas de Liberação de Medicamentos/métodos
2.
NeuroRehabilitation ; 55(1): 17-28, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39150836

RESUMO

BACKGROUND: The traditional method of post-hospital intervention and guidance of stroke patients has some limitations. OBJECTIVE: To investigate the effects of Internet + wearable device training on limb function recovery and the levels of serum neurocytokines (BDNF, NT-3, and NGF) in stroke patients. METHODS: 80 stroke patients with hemiplegia were randomly selected from the Department of Neurorehabilitation, Affiliated Rehabilitation Hospital of Chongqing Medical University. They were divided into a control group and an observation group, with 40 patients in each group. The control group received routine post-hospital follow-up guidance, while the observation group received Internet remote home rehabilitation guidance combined with wearable device training. The interventions were compared between the two groups. RESULTS: At 4 weeks and 12 weeks after discharge, the observation group showed higher scores on the Fugl-Meyer scale (FMA), Berg Balance Scale (BBS), modified Barthel Index (MBI), stride length, gait speed, gait frequency, and higher levels of BDNF, NT-3, and NGF. Additionally, the observation group had lower scores on the Hamilton Anxiety and Depression Scale (HADS) (P < 0.05). CONCLUSIONS: The application of Internet remote home rehabilitation guidance combined with wearable device training in stroke patients with hemiplegia can improve limb function recovery. It effectively increases the levels of BDNF, NT-3, and NGF, promoting the nutritional repair of damaged nerves. These findings hold clinical significance.


Assuntos
Recuperação de Função Fisiológica , Reabilitação do Acidente Vascular Cerebral , Acidente Vascular Cerebral , Dispositivos Eletrônicos Vestíveis , Humanos , Masculino , Reabilitação do Acidente Vascular Cerebral/métodos , Feminino , Pessoa de Meia-Idade , Recuperação de Função Fisiológica/fisiologia , Idoso , Acidente Vascular Cerebral/sangue , Acidente Vascular Cerebral/fisiopatologia , Internet , Fator Neurotrófico Derivado do Encéfalo/sangue , Hemiplegia/reabilitação , Hemiplegia/etiologia , Neurotrofina 3/sangue , Adulto
3.
Sci Adv ; 10(31): eadn6216, 2024 Aug 02.
Artigo em Inglês | MEDLINE | ID: mdl-39093978

RESUMO

Optical nonlinearities are one of the most fascinating properties of two-dimensional (2D) materials. While tremendous efforts have been made to find and optimize the second-order optical nonlinearity in enormous 2D materials, opportunities to explore higher-order ones are elusive because of the much lower efficiency. Here, we report the giant high odd-order optical nonlinearities in centrosymmetric correlated van der Waals insulator manganese phosphorus triselenide. When illuminated by two near-infrared femtosecond lasers, the sample generates a series of profound four- and six-wave mixing outputs. The near-infrared third-order nonlinear susceptibility reaches near the highest record values of 2D materials. Comparative measurements to other prototypical nonlinear optical materials [lithium niobate, gallium(II) selenide, and tungsten disulfide] reveal its extraordinary wave mixing efficiency. The wave mixing processes are further used for nonlinear optical waveguide with multicolor emission. Our work highlights the promising prospect for future research of the nonlinear light-matter interactions in the correlated 2D system and for potential nonlinear photonic applications.

4.
Nature ; 632(8027): 1009-1013, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-39143219

RESUMO

The nucleus of almost all massive galaxies contains a supermassive black hole (BH)1. The feedback from the accretion of these BHs is often considered to have crucial roles in establishing the quiescence of massive galaxies2-14, although some recent studies show that even galaxies hosting the most active BHs do not exhibit a reduction in their molecular gas reservoirs or star formation rates15-17. Therefore, the influence of BHs on galaxy star formation remains highly debated and lacks direct evidence. Here, based on a large sample of nearby galaxies with measurements of masses of both BHs and atomic hydrogen (HI), the main component of the interstellar medium18, we show that the HI gas mass to stellar masses ratio (µHI = MHI/M⋆) is more strongly correlated with BH masses (MBH) than with any other galaxy parameters, including stellar mass, stellar mass surface density and bulge masses. Moreover, once the µHI-MBH correlation is considered, µHI loses dependence on other galactic parameters, demonstrating that MBH serves as the primary driver of µHI. These findings provide important evidence for how the accumulated energy from BH accretion regulates the cool gas content in galaxies, by ejecting interstellar medium gas and/or suppressing gas cooling from the circumgalactic medium.

5.
Research (Wash D C) ; 7: 0450, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39165639

RESUMO

Radiotherapy (RT) serves as the primary treatment for solid tumors. Its potential to incite an immune response against tumors both locally and distally profoundly impacts clinical outcomes. However, RT may also promote the accumulation of immunosuppressive cytokines and immunosuppressive cells, greatly impeding the activation of antitumor immune responses and substantially limiting the effectiveness of RT. Therefore, regulating post-RT immunosuppression to steer the immune milieu toward heightened activation potentially enhances RT's therapeutic potential. Cytokines, potent orchestrators of diverse cellular responses, play a pivotal role in regulating this immunosuppressive response. Identifying and promptly neutralizing early released immunosuppressive cytokines are a crucial development in augmenting RT's immunomodulatory effects. To this end, we conducted a screen of immunosuppressive cytokines following RT and identified macrophage colony-stimulating factor (MCSF) as an early up-regulated and persistent immune suppressor. Single-cell sequencing revealed that the main source of up-regulated MCSF derived from tumor cells. Mechanistic exploration revealed that irradiation-dependent phosphorylation of the p65 protein facilitated its binding to the MCSF gene promoter, enhancing transcription. Knockdown and chemical inhibitor experiments conclusively demonstrated that suppressing tumor cell-derived MCSF amplifies RT's immune-activating effects, with optimal results achieved by early MCSF blockade after irradiation. Additionally, we validated that MCSF acted on macrophages, inducing the secretion of a large number of inhibitory cytokines. In summary, we propose a novel approach to enhance the immune activation effects of RT by blocking the MCSF-CSF1R signaling pathway early after irradiation.

6.
Adv Sci (Weinh) ; 11(36): e2310304, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39072947

RESUMO

Despite the success of immunotherapy in treating hepatocellular carcinoma (HCC), HCC remains a severe threat to health. Here, a crucial transcription factor, SOX12, is revealed that induces the immunosuppression of liver tumor microenvironment. Overexpressing SOX12 in HCC syngeneic models increases intratumoral regulatory T-cell (Treg) infiltration, decreases CD8+T-cell infiltration, and hastens HCC metastasis. Hepatocyte-specific SOX12 knockout attenuates DEN/CCl4-induced HCC progression and metastasis, whereas hepatocyte-specific SOX12 knock-in accelerates these effects. Mechanistically, SOX12 transcriptionally activates C-C motif chemokine ligand 22 (CCL22) expression to promote the recruitment and suppressive activity of Tregs. Moreover, SOX12 transcriptionally upregulates CD274 expression to suppress CD8+T-cell infiltration. Either knockdown of CCL22 or PD-L1 dampens SOX12-mediated HCC metastasis. Blocking of CC chemokine receptor 4 (CCR4), a receptor for CCL22, by inhibitor C-021 or Treg-specific knockout of CCR4 inhibits SOX12-mediated HCC metastasis. Transforming growth factor-ß1 (TGF-ß1)/TGFßR1-Smad2/3/4 is identified as a key upstream signaling for SOX12 overexpression in HCC cells. Combining C-021 or TGFßR1 inhibitor galunisertib with anti-PD-L1 exhibits an enhanced antitumor effect in two HCC models. Collectively, the findings demonstrate that SOX12 contributes to HCC immunosuppression through the CCL22/CCR4-Treg and PD-L1-CD8+T axes. Blocking of CCR4 or TGFßR1 improves the efficacy of anti-PD-L1 in SOX12-mediated HCC.


Assuntos
Carcinoma Hepatocelular , Progressão da Doença , Neoplasias Hepáticas , Fatores de Transcrição SOXC , Linfócitos T Reguladores , Carcinoma Hepatocelular/imunologia , Carcinoma Hepatocelular/genética , Carcinoma Hepatocelular/metabolismo , Carcinoma Hepatocelular/patologia , Neoplasias Hepáticas/imunologia , Neoplasias Hepáticas/genética , Neoplasias Hepáticas/metabolismo , Neoplasias Hepáticas/patologia , Animais , Camundongos , Linfócitos T Reguladores/imunologia , Fatores de Transcrição SOXC/genética , Fatores de Transcrição SOXC/metabolismo , Modelos Animais de Doenças , Microambiente Tumoral/imunologia , Microambiente Tumoral/genética , Humanos , Camundongos Endogâmicos C57BL , Metástase Neoplásica , Masculino , Tolerância Imunológica/genética , Tolerância Imunológica/imunologia , Linhagem Celular Tumoral
7.
Cell Commun Signal ; 22(1): 350, 2024 Jul 04.
Artigo em Inglês | MEDLINE | ID: mdl-38965548

RESUMO

T-BOX factors belong to an evolutionarily conserved family of transcription factors. T-BOX factors not only play key roles in growth and development but are also involved in immunity, cancer initiation, and progression. Moreover, the same T-BOX molecule exhibits different or even opposite effects in various developmental processes and tumor microenvironments. Understanding the multiple roles of context-dependent T-BOX factors in malignancies is vital for uncovering the potential of T-BOX-targeted cancer therapy. We summarize the physiological roles of T-BOX factors in different developmental processes and their pathological roles observed when their expression is dysregulated. We also discuss their regulatory roles in tumor immune microenvironment (TIME) and the newly arising questions that remain unresolved. This review will help in systematically and comprehensively understanding the vital role of the T-BOX transcription factor family in tumor physiology, pathology, and immunity. The intention is to provide valuable information to support the development of T-BOX-targeted therapy.


Assuntos
Neoplasias , Microambiente Tumoral , Humanos , Neoplasias/metabolismo , Neoplasias/genética , Neoplasias/tratamento farmacológico , Neoplasias/imunologia , Neoplasias/terapia , Microambiente Tumoral/genética , Animais , Proteínas com Domínio T/metabolismo , Proteínas com Domínio T/genética , Terapia de Alvo Molecular
8.
Arch Med Res ; 55(5): 103034, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38972195

RESUMO

BACKGROUND AND OBJECTIVE: Disturbed autonomic nervous system (ANS) may promote inflammatory, immune, and oxidative stress responses, which may increase the risk of acute coronary events. S100ß has been proposed as a biomarker of neuronal injury that would provide an insightful understanding of the crosstalk between the ANS, immune-inflammatory cells, and plaques that drive atherosclerosis. This study investigates the correlation between S100ß, and functional coronary stenosis as determined by quantitative flow ratio (QFR). METHODS: Patients with unstable angina pectoris (UAP) scheduled for coronary angiography and QFR were retrospectively enrolled. Serum S100ß levels were determined by enzyme-linked immunosorbent assay. The Gensini score was used to estimate the extent of atherosclerotic lesions and the cumulative sum of three-vessel QFR (3V-QFR) was calculated to estimate the total atherosclerotic burden. RESULTS: Two hundred thirty-three patients were included in this study. Receiver operator characteristic (ROC) curve indicated that S100ß>33.28 pg/mL predicted functional ischemia in patients with UAP. Multivariate logistic analyses showed that a higher level of S100ß was independently correlated with a functional ischemia-driven target vessel (QFR ≤0.8). This was also closely correlated with the severity of coronary lesions, as measured by the Gensini score (OR = 5.058, 95% CI: 2.912-8.793, p <0.001). According to 3V-QFR, S100ß is inversely associated with total atherosclerosis burden (B = -0.002, p <0.001). CONCLUSIONS: S100ß was elevated in the functional ischemia stages of UAP. It was independently associated with coronary lesion severity as assessed by Gensini score and total atherosclerosis burden as estimated by 3V-QFR in patients with UAP.


Assuntos
Angina Instável , Biomarcadores , Angiografia Coronária , Subunidade beta da Proteína Ligante de Cálcio S100 , Humanos , Masculino , Feminino , Angina Instável/sangue , Angina Instável/fisiopatologia , Angina Instável/diagnóstico por imagem , Pessoa de Meia-Idade , Idoso , Subunidade beta da Proteína Ligante de Cálcio S100/sangue , Estudos Retrospectivos , Biomarcadores/sangue , Curva ROC , Estenose Coronária/sangue , Estenose Coronária/fisiopatologia , Estenose Coronária/diagnóstico por imagem
9.
Br J Hosp Med (Lond) ; 85(7): 1-13, 2024 Jul 30.
Artigo em Inglês | MEDLINE | ID: mdl-39078889

RESUMO

Aims/Background Cervical cancer continues to be a significant cause of cancer-related deaths among women, especially in low-resource settings where screening and follow-up care are lacking. The transcription factor zinc finger E-box-binding homeobox 2 (ZEB2) has been identified as a potential marker for tumour aggressiveness and cancer progression in cervical cancer tissues. Methods This study presents a hybrid deep learning system developed to classify cervical cancer images based on ZEB2 expression. The system integrates multiple convolutional neural network models-EfficientNet, DenseNet, and InceptionNet-using ensemble voting. We utilised the gradient-weighted class activation mapping (Grad-CAM) visualisation technique to improve the interpretability of the decisions made by the convolutional neural networks. The dataset consisted of 649 annotated images, which were divided into training, validation, and testing sets. Results The hybrid model exhibited a high classification accuracy of 94.4% on the test set. The Grad-CAM visualisations offered insights into the model's decision-making process, emphasising the image regions crucial for classifying ZEB2 expression levels. Conclusion The proposed hybrid deep learning model presents an effective and interpretable method for the classification of cervical cancer based on ZEB2 expression. This approach holds the potential to substantially aid in early diagnosis, thereby potentially enhancing patient outcomes and mitigating healthcare costs. Future endeavours will concentrate on enhancing the model's accuracy and investigating its applicability to other cancer types.


Assuntos
Aprendizado Profundo , Neoplasias do Colo do Útero , Homeobox 2 de Ligação a E-box com Dedos de Zinco , Humanos , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/patologia , Feminino , Homeobox 2 de Ligação a E-box com Dedos de Zinco/metabolismo , Redes Neurais de Computação , Biomarcadores Tumorais/metabolismo
10.
Biomed Pharmacother ; 177: 117121, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-39002443

RESUMO

OBJECTIVES: Celastrol has widespread therapeutic applications in various pathological conditions, including chronic inflammation. Previous studies have demonstrated the potent cardioprotective effects of celastrol. Nevertheless, limited attention has been given to its potential in reducing ventricular arrhythmias (VAs) following myocardial infarction (MI). Hence, this study aimed to elucidate the potential mechanisms underlying the regulatory effects of celastrol on VAs and cardiac electrophysiological parameters in rats after MI. METHODS: Sprague-Dawley rats were divided at random: the sham, MI, and MI + celastrol groups. The left coronary artery was occluded in the MI and MI + Cel groups. Electrocardiogram, heart rate variability (HRV), ventricular electrophysiological parameters analysis, histology staining of ventricles, Enzyme-linked immunosorbent assay (ELISA), western blotting and Quantitative real-time polymerase chain reaction (qRT-PCR) were performed to elucidate the underlying mechanism of celastrol. Besides, H9c2 cells were subjected to hypoxic conditions to create an in vitro model of MI and then treated with celastrol for 24 hours. Nigericin was used to activate the NLRP3 inflammasome. RESULTS: Compared with that MI group, cardiac electrophysiology instability was significantly alleviated in the MI + celastrol group. Additionally, celastrol improved HRV, upregulated the levels of Cx43, Kv.4.2, Kv4.3 and Cav1.2, mitigated myocardial fibrosis, and inhibited the NLRP3 inflammasome pathway. In vitro conditions also supported the regulatory effects of celastrol on the NLRP3 inflammasome pathway. CONCLUSIONS: Celastrol could alleviate the adverse effects of VAs after MI partially by promoting autonomic nerve remodeling, ventricular electrical reconstruction and ion channel remodeling, and alleviating ventricular fibrosis and inflammatory responses partly by through inhibiting the NLRP3/Caspase-1/IL-1ß pathway.


Assuntos
Antiarrítmicos , Arritmias Cardíacas , Caspase 1 , Insuficiência Cardíaca , Interleucina-1beta , Infarto do Miocárdio , Proteína 3 que Contém Domínio de Pirina da Família NLR , Triterpenos Pentacíclicos , Ratos Sprague-Dawley , Transdução de Sinais , Animais , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Triterpenos Pentacíclicos/farmacologia , Caspase 1/metabolismo , Antiarrítmicos/farmacologia , Transdução de Sinais/efeitos dos fármacos , Masculino , Ratos , Interleucina-1beta/metabolismo , Arritmias Cardíacas/tratamento farmacológico , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/metabolismo , Insuficiência Cardíaca/fisiopatologia , Infarto do Miocárdio/tratamento farmacológico , Infarto do Miocárdio/metabolismo , Infarto do Miocárdio/patologia , Triterpenos/farmacologia , Doença Crônica , Inflamassomos/metabolismo , Inflamassomos/efeitos dos fármacos , Linhagem Celular , Frequência Cardíaca/efeitos dos fármacos , Modelos Animais de Doenças
11.
Food Res Int ; 188: 114525, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38823888

RESUMO

As a kind of green tea with unique multiple baking processes, the flavor code of Lu'an Guapian (LAGP) has recently been revealed. To improve and stabilize the quality of LAGP, further insight into the dynamic changes in odorants during the whole processing is required. In this study, 50 odorants were identified in processing tea leaves, 14 of which were selected for absolute quantification to profile the effect of processes. The results showed that spreading is crucial for key aroma generation and accumulation, while these odorants undergo significant changes at the deep baking stage. By adjusting the conditions of the spreading and deep baking, it was found that low-temperature (4 °C) spreading for 6 h and low-temperature with long-time baking (final leaf temperature: 102 °C, 45 min) could improve the overall aroma quality. These results provide a new direction for enhancing the quality of LAGP green tea.


Assuntos
Odorantes , Chá , Compostos Orgânicos Voláteis , Odorantes/análise , Chá/química , Compostos Orgânicos Voláteis/análise , Folhas de Planta/química , Manipulação de Alimentos/métodos , Culinária/métodos , Camellia sinensis/química , Cromatografia Gasosa-Espectrometria de Massas , Temperatura Alta
12.
Med Dosim ; 2024 Jun 22.
Artigo em Inglês | MEDLINE | ID: mdl-38910070

RESUMO

Respiratory motion management is the crucial challenge for safe and effective application of lung stereotactic body radiotherapy (SBRT). The present study implemented lung SBRT treatment in voluntary deep inspiration breath-hold (DIBH) with surface-guided radiotherapy (SGRT) system and evaluated the geometric and dosimetric benefits of DIBH to organs-at-risk (OARs), aiming to advising the choice between DIBH technology and conventional free breathing 4 dimensions (FB-4D) technology. Five patients of lung SBRT treated in DIBH with SGRT at our institution were retrospectively analyzed. CT scans were acquired in DIBH and FB-4D, treatment plans were generated for both respiratory phases. The geometric and dosimetry of tumor, ipsilateral lung, double lungs and heart were compared between the DIBH and FB-4D treatment plans. In terms of target coverage, utilizing DIBH significantly reduced the mean plan target volume (PTV) by 21.9% (p = 0.09) compared to FB-4D, the conformity index (CI) of DIBH and FB-4D were comparable, but the dose gradient index (DGI) of DIBH was higher. With DIBH expanding lung, the volumes of ipsilateral lung and double lungs were 2535.1 ± 403.0cm3 and 4864.3 ± 900.2cm3, separately, 62.2% (p = 0.009) and 73.1% (p = 0.009) more than volumes of ipsilateral lung (1460.03 ± 146.60cm3) and double lungs (2811.25 ± 603.64cm3) in FB-4D. The heart volume in DIBH was 700.0 ± 146.1cm3, 11.6% (p = 0.021) less than that in FB-4D. As for OARs protection, the mean dose, percent of volume receiving > 20Gy (V20) and percent of volume receiving > 5Gy (V5) of ipsilateral lung in DIBH were significantly lower by 33.2% (p = 0.020), 44.0% (p = 0.022) and 24.5% (p = 0.037) on average, separately. Double lungs also showed significant decrease by 31.1% (p = 0.019), 45.5% (p = 0.024) and 20.9% (p = 0.048) on average for mean dose, V20 and V5 in DIBH. Different from the lung, the mean dose and V5 of heart showed no consistency between DIBH and FB-4D, but lower maximum dose of heart was achieved in DIBH for all patients in this study. Appling lung SBRT in DIBH with SGRT was feasibly performed with high patient compliance. DIBH brought significant dosimetric benefits to lung, however, it caused more or less irradiated heart dose that depend on the patients' individual differences which were unpredictable.

13.
Foods ; 13(11)2024 Jun 03.
Artigo em Inglês | MEDLINE | ID: mdl-38890983

RESUMO

Metabolic syndrome (MetS) significantly predisposes individuals to diabetes and is a prognostic factor for the progression of diabetic nephropathy (DN). This study aimed to evaluate the efficacy of (-)-gallocatechin gallate (GCG) in alleviating signs of MetS-associated DN in db/db mice. We administered GCG and monitored its effects on several metabolic parameters, including food and water intake, urinary output, blood glucose levels, glucose and insulin homeostasis, lipid profiles, blood pressure, and renal function biomarkers. The main findings indicated that GCG intervention led to marked improvements in these metabolic indicators and renal function, signifying its potential in managing MetS and DN. Furthermore, transcriptome analysis revealed substantial modifications in gene expression, notably the downregulation of pro-inflammatory genes such as S100a8, S100a9, Cd44, Socs3, Mmp3, Mmp9, Nlrp3, IL-1ß, Osm, Ptgs2, and Lcn2 and the upregulation of the anti-oxidative gene Gstm3. These genetic alterations suggest significant effects on pathways related to inflammation and oxidative stress. In conclusion, GCG demonstrates therapeutic efficacy for MetS-associated DN, mitigating metabolic disturbances and enhancing renal health by modulating inflammatory and oxidative responses.

14.
BMC Med ; 22(1): 257, 2024 Jun 20.
Artigo em Inglês | MEDLINE | ID: mdl-38902696

RESUMO

BACKGROUND: Current research on the neurological impact of SARS-CoV-2 primarily focuses on the elderly or severely ill individuals. This study aims to explore the diverse neurological consequences of SARS-CoV-2 infection, with a particular focus on mildly affected children and adolescents. METHODS: A cohort study was conducted to collect pre- and post-infection resting-state electroencephalogram (EEG) data from 185 participants and 181 structured questionnaires of long-term symptoms across four distinct age groups. The goal was to comprehensively evaluate the impact of SARS-CoV-2 infection on these different age demographics. The study analyzed EEG changes of SARS-CoV-2 by potential biomarkers across age groups using both spatial and temporal approaches. RESULTS: Spatial analysis indicated that children and adolescents exhibit smaller changes in brain network and microstate patterns post-infection, implying a milder cognitive impact. Sequential linear analyses showed that SARS-CoV-2 infection is associated with a marked rise in low-complexity, synchronized neural activity within low-frequency EEG bands. This is evidenced by a significant increase in Hjorth activity within the theta band and Hjorth mobility in the delta band. Sequential nonlinear analysis indicated a significant reduction in the Hurst exponent across all age groups, pointing to increased chaos and complexity within the cognitive system following infection. Furthermore, linear regression analysis based on questionnaires established a significant positive relationship between the magnitude of changes in these neural indicators and the persistence of long-term symptoms post-infection. CONCLUSIONS: The findings underscore the enduring neurological impacts of SARS-CoV-2 infection, marked by cognitive decline and increased EEG disarray. Although children and adolescents experienced milder effects, cognitive decline and heightened low-frequency electrical activity were evident. These observations might contribute to understanding potential anxiety, insomnia, and neurodevelopmental implications.


Assuntos
COVID-19 , Disfunção Cognitiva , Eletroencefalografia , SARS-CoV-2 , Humanos , COVID-19/fisiopatologia , Criança , Adolescente , Masculino , Disfunção Cognitiva/fisiopatologia , Disfunção Cognitiva/etiologia , Disfunção Cognitiva/virologia , Feminino , Adulto Jovem , Estudos de Coortes , Fatores Etários , Adulto , Pré-Escolar , Encéfalo/fisiopatologia , Encéfalo/virologia , Pessoa de Meia-Idade , Idoso
15.
Entropy (Basel) ; 26(6)2024 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-38920524

RESUMO

The wavelength attack utilizes the dependence of beam splitters (BSs) on wavelength to cause legitimate users Alice and Bob to underestimate their excess noise so that Eve can steal more secret keys without being detected. Recently, the wavelength attack on Gaussian-modulated continuous-variable quantum key distribution (CV-QKD) has been researched in both fiber and atmospheric channels. However, the wavelength attack may also pose a threat to the case of ocean turbulent channels, which are vital for the secure communication of both ocean sensor networks and submarines. In this work, we propose two wavelength attack schemes on underwater discrete modulated (DM) CV-QKD protocol, which is effective for the case with and without local oscillator (LO) intensity monitor, respectively. In terms of the transmittance properties of the fused biconical taper (FBT) BS, two sets of wavelengths are determined for Eve's pulse manipulation, which are all located in the so-called blue-green band. The derived successful criterion shows that both attack schemes can control the estimated excess noise of Alice and Bob close to zero by selecting the corresponding condition parameters based on channel transmittance. Additionally, our numerical analysis shows that Eve can steal more bits when the wavelength attack controls the value of the estimated excess noise closer to zero.

16.
Sensors (Basel) ; 24(11)2024 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-38894311

RESUMO

In recent years, there has been a considerable amount of research on visual evoked potential (VEP)-based brain-computer interfaces (BCIs). However, it remains a big challenge to detect VEPs elicited by small visual stimuli. To address this challenge, this study employed a 256-electrode high-density electroencephalogram (EEG) cap with 66 electrodes in the parietal and occipital lobes to record EEG signals. An online BCI system based on code-modulated VEP (C-VEP) was designed and implemented with thirty targets modulated by a time-shifted binary pseudo-random sequence. A task-discriminant component analysis (TDCA) algorithm was employed for feature extraction and classification. The offline and online experiments were designed to assess EEG responses and classification performance for comparison across four different stimulus sizes at visual angles of 0.5°, 1°, 2°, and 3°. By optimizing the data length for each subject in the online experiment, information transfer rates (ITRs) of 126.48 ± 14.14 bits/min, 221.73 ± 15.69 bits/min, 258.39 ± 9.28 bits/min, and 266.40 ± 6.52 bits/min were achieved for 0.5°, 1°, 2°, and 3°, respectively. This study further compared the EEG features and classification performance of the 66-electrode layout from the 256-electrode EEG cap, the 32-electrode layout from the 128-electrode EEG cap, and the 21-electrode layout from the 64-electrode EEG cap, elucidating the pivotal importance of a higher electrode density in enhancing the performance of C-VEP BCI systems using small stimuli.


Assuntos
Algoritmos , Interfaces Cérebro-Computador , Eletroencefalografia , Potenciais Evocados Visuais , Humanos , Potenciais Evocados Visuais/fisiologia , Eletroencefalografia/métodos , Masculino , Adulto , Feminino , Adulto Jovem , Estimulação Luminosa , Eletrodos , Processamento de Sinais Assistido por Computador
17.
J Endourol ; 2024 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-38877819

RESUMO

Objective: To compare the efficacy and postoperative infection rate of super mini percutaneous nephrolithotomy (SMP) and flexible ureteroscopic lithotripsy (FURL) in patients with diabetic nephrolithiasis and to explore the risk factors associated with postoperative infection following these two procedures. Methods: The medical history and surgery details of 252 patients with diabetic nephrolithiasis who underwent lithotripsy in our hospital between January 2018 and May 2023, including 144 SMP and 108 FURL, were reviewed and compared. Perioperative outcomes were compared between the two groups. Logistic regression was performed to identify the significant risk factors for infection after each procedure. Results: SMP achieved a higher stone-free rate (SFR) on postoperative day 1 and postoperative day 30 compared with FURL (p < 0.05). The mean operative time was shorter in SMP (p < 0.01). FURL was associated with less hemoglobin drop (p < 0.01) and shorter length of stay (p < 0.01). The incident rate of systemic inflammatory response syndrome (SIRS) was higher after SMP (p = 0.019), while the incident rate of urinary tract infection (UTI) was higher after FURL (p = 0.021). Overall postoperative infection and sepsis rates were similar between the two procedures. Logistic regression analysis revealed that gender odds ratio [OR]: 0.225, 95% confidence interval [CI]: 0.079-0.639), HbA1c (OR: 3.516, 95% CI: 1.841-6.716), and operation time (OR: 1.037, 95% CI: 1.008-1.066) were independent risk factors for infection after FURL, while operation time (OR: 1.063, 95% CI: 1.022-1.106) and HbA1c (OR: 7.443, 95% CI: 2.956-18.742) significantly predicted SMP-associated infections. Conclusion: In diabetic patients, SMP demonstrated higher SFR and shorter operation time, whereas FURL was associated with less bleeding and shorter hospitalization. SMP had a higher incident rate of SIRS and FURL had a higher incident rate of UTI. Elevated HbA1c and prolonged operative duration increased infection risk after both procedures, while female gender was an additional risk factor for FURL-related infections.

18.
Int Immunopharmacol ; 136: 112380, 2024 Jul 30.
Artigo em Inglês | MEDLINE | ID: mdl-38850790

RESUMO

BACKGROUND AND AIMS: Impaired intestinal barrier function is key in maintaining intestinal inflammation in Crohn's disease (CD). However, no targeted treatment in clinical practice has been developed. Peiminine (Pm) strongly protects the epithelial barrier, the purpose of this study is to investigate whether Pm affects CD-like colitis and potential mechanisms for its action. METHODS: Trinitro-benzene-sulfonic acid (TNBS)-induced mice and Il-10-/- mice were used as CD animal models. Colitis symptoms, histological analysis, and intestinal barrier permeability were used to assess the Pm's therapeutic effect on CD-like colitis. The colon organoids were induced by TNF-α to evaluate the direct role of Pm in inhibiting apoptosis of the intestinal epithelial cells. Western blotting and small molecule inhibitors were used to investigate further the potential mechanism of Pm in inhibiting apoptosis of intestinal epithelial cells. RESULTS: Pm treatment reduced body weight loss, disease activity index (DAI) score, and inflammatory score, demonstrating that colonic inflammation in mice were alleviated. Pm decreased the intestinal epithelial apoptosis, improved the intestinal barrier function, and prevented the loss of tight junction proteins (ZO1 and claudin-1) in the colon of CD mice and TNF-α-induced colonic organoids. Pm activated Nrf2/HO1 signaling, which may protect intestinal barrier function. CONCLUSIONS: Pm inhibits intestinal epithelial apoptosis in CD mice by activating Nrf2/HO1 pathway. This partially explains the potential mechanism of Pm in ameliorating intestinal barrier function in mice and provides a new approach to treating CD.


Assuntos
Apoptose , Colite , Doença de Crohn , Modelos Animais de Doenças , Mucosa Intestinal , Camundongos Endogâmicos C57BL , Camundongos Knockout , Fator 2 Relacionado a NF-E2 , Transdução de Sinais , Ácido Trinitrobenzenossulfônico , Animais , Fator 2 Relacionado a NF-E2/metabolismo , Doença de Crohn/tratamento farmacológico , Doença de Crohn/patologia , Mucosa Intestinal/efeitos dos fármacos , Mucosa Intestinal/patologia , Mucosa Intestinal/metabolismo , Colite/tratamento farmacológico , Colite/induzido quimicamente , Colite/patologia , Camundongos , Transdução de Sinais/efeitos dos fármacos , Apoptose/efeitos dos fármacos , Humanos , Masculino , Colo/patologia , Colo/efeitos dos fármacos , Heme Oxigenase-1/metabolismo , Heme Oxigenase-1/genética , Heme Oxigenase (Desciclizante)/metabolismo , Heme Oxigenase (Desciclizante)/genética , Interleucina-10/metabolismo , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/uso terapêutico , Proteínas de Membrana
19.
J Hypertens ; 42(10): 1757-1768, 2024 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-38937962

RESUMO

BACKGROUND: : Hypertension is an important contributing factor to atherosclerotic cardiovascular disease (ASCVD), and multiple risk factors, many of which are implicated in metabolic disorders, contribute to the cause of hypertension. Despite the promise of multimodal data-driven prediction model, no such prediction model was available to predict the risk of ASCVD in Chinese individuals with new-onset hypertension and no history of ASCVD. METHODS: : A total of 514 patients were randomly allocated to training and verification cohorts (ratio, 7 : 3). We employed Boruta feature selection and conducted multivariate Cox regression analyses to identify variables associated with ASCVD in these patients, which were subsequently utilized for constructing the predictive model. The performance of prediction model was assessed in terms of discriminatory power (C-index), calibration (calibration curves), and clinical utility [decision curve analysis (DCA)]. RESULTS: : This model was derived from four clinical variables: 24-h SBP coefficient of variation, 24-h DBP coefficient of variation, urea nitrogen and the triglyceride-glucose (TyG) index. Bootstrapping with 500 iterations was conducted to adjust the C-indexes were C-index = 0.731, 95% confidence interval (CI) 0.620-0.794 and C-index: 0.799, 95% CI 0.677-0.892 in the training and verification cohorts, respectively. Calibration plots with 500 bootstrapping iterations exhibited a strong correlation between the predicted and observed occurrences of ASCVD in both the training and verification cohorts. DCA analysis confirmed the clinical utility of this prediction model. The constructed nomogram demonstrated significant additional prognostic utility for ASCVD, as evidenced by improvements in the C-index, net reclassification improvement, integrated discrimination improvement, and DCA compared with the overall ASCVD risk assessment. CONCLUSION: The developed longitudinal prediction model based on multimodal data can effectively predict ASCVD risk in individuals with an initial diagnosis of hypertension. TRIAL REGISTRATION: : The trial was registered in the Chinese Clinical Trial Registry (ChiCTR2300074392).


Assuntos
Aterosclerose , Hipertensão , Humanos , Feminino , Masculino , Pessoa de Meia-Idade , Hipertensão/complicações , Idoso , Fatores de Risco , China/epidemiologia , Medição de Risco/métodos , Doenças Cardiovasculares , Adulto
20.
Emerg Microbes Infect ; 13(1): 2373315, 2024 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38922438

RESUMO

Hepatitis E virus (HEV) is an important cause of acute hepatitis, however, is highly neglected and largely underreported. This study aimed to describe the detailed epidemiology of hepatitis E (HE) through a 10-year surveillance. A community-based active hepatitis surveillance was conducted between November 2007 and October 2017 in 11 townships of Dongtai City in China, involving 355,673 residents. Serum samples were obtained from patients presenting with hepatitis symptoms for more than 3 days. Serum alanine aminotransferase (ALT) levels greater than 2.5 times the upper limit of normal (ULN) were considered acute hepatitis. Samples were subsequently tested for IgG and IgM anti-HEV antibodies, HEV RNA, and hepatitis B surface antigen (HBsAg). The data indicated the incidence of HE fluctuated downward from 2007 to 2017, with an average annual age-standardized incidence of 17.50 per 100,000, exceeding the 10.26 per 100,000 in the National Notifiable Disease Report System (NNDRS). The incidence was notably higher among males (20.95 per 100,000) and individuals aged 50-69 years (37.47 per 100,000). Genotype 4 (HEV-4) was the predominantly circulating genotype during the study period. Furthermore, the study revealed the incidence of hepatitis with HEV and hepatitis B virus (HBV) co-infection was 4.99 per 100,000. The active surveillance system identified a higher incidence of HE compared to NNDRS, with a decreased prevalence over a 10-year period. While efforts are still needed to prevent HE in high-risk populations, including individuals with hepatitis B and the elderly.


Assuntos
Anticorpos Anti-Hepatite , Vírus da Hepatite E , Hepatite E , Humanos , Hepatite E/epidemiologia , Hepatite E/virologia , China/epidemiologia , Masculino , Pessoa de Meia-Idade , Vírus da Hepatite E/genética , Vírus da Hepatite E/imunologia , Vírus da Hepatite E/classificação , Vírus da Hepatite E/isolamento & purificação , Feminino , Adulto , Idoso , Adolescente , Adulto Jovem , Incidência , Criança , Pré-Escolar , Anticorpos Anti-Hepatite/sangue , Genótipo , Lactente , Hepatite B/epidemiologia , Hepatite B/virologia , RNA Viral/genética , Coinfecção/epidemiologia , Coinfecção/virologia , Imunoglobulina M/sangue , Monitoramento Epidemiológico , Idoso de 80 Anos ou mais , Imunoglobulina G/sangue , Vírus da Hepatite B/genética , Vírus da Hepatite B/imunologia , Vírus da Hepatite B/isolamento & purificação , Antígenos de Superfície da Hepatite B/sangue , Recém-Nascido , Cidades/epidemiologia
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