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The molecular mechanisms governing orderly shutdown and retraction of CD4+ type 1 helper T (TH1) cell responses remain poorly understood. Here we show that complement triggers contraction of TH1 responses by inducing intrinsic expression of the vitamin D (VitD) receptor and the VitD-activating enzyme CYP27B1, permitting T cells to both activate and respond to VitD. VitD then initiated the transition from pro-inflammatory interferon-γ+ TH1 cells to suppressive interleukin-10+ cells. This process was primed by dynamic changes in the epigenetic landscape of CD4+ T cells, generating super-enhancers and recruiting several transcription factors, notably c-JUN, STAT3 and BACH2, which together with VitD receptor shaped the transcriptional response to VitD. Accordingly, VitD did not induce interleukin-10 expression in cells with dysfunctional BACH2 or STAT3. Bronchoalveolar lavage fluid CD4+ T cells of patients with COVID-19 were TH1-skewed and showed de-repression of genes downregulated by VitD, from either lack of substrate (VitD deficiency) and/or abnormal regulation of this system.
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Interferon gama/imunologia , Interleucina-10/imunologia , SARS-CoV-2/imunologia , Células Th1/imunologia , Vitamina D/metabolismo , 25-Hidroxivitamina D3 1-alfa-Hidroxilase/metabolismo , Fatores de Transcrição de Zíper de Leucina Básica/metabolismo , Líquido da Lavagem Broncoalveolar/citologia , COVID-19/imunologia , COVID-19/patologia , Complemento C3a/imunologia , Complemento C3b/imunologia , Humanos , Proteínas Quinases JNK Ativadas por Mitógeno/metabolismo , Ativação Linfocitária/imunologia , Receptores de Calcitriol/metabolismo , Síndrome do Desconforto Respiratório/imunologia , Síndrome do Desconforto Respiratório/patologia , Síndrome do Desconforto Respiratório/virologia , Fator de Transcrição STAT3/metabolismo , Transdução de Sinais/imunologia , Transcrição Gênica/genéticaRESUMO
Information stored in working memory can guide perception selection, and this process is modulated by cognitive control. Although previous studies have demonstrated that neurostimulation over the left dorsolateral prefrontal cortex (lDLPFC) contributes to restore cognitive control among individuals with substance use disorder (SUD), there remains an open question about the potential stimulation effects on memory-driven attention. To address this issue, the present study adopted a combined working memory/attention paradigm while employing high-definition transcranial direct current stimulation (HD-tDCS) to stimulate the lDLPFC. Observers were asked to maintain visual or audiovisual information in memory while executing a search task, while the validity of the memory contents for the subsequent search task could be either invalid or neutral. The results showed a faint memory-driven attentional suppression effect in sham stimulation only under the audiovisual condition. Moreover, anodal HD-tDCS facilitated attentional suppression effect in both the strength and temporal dynamics under the visual-only condition, whereas the effect was impaired or unchanged under the audiovisual condition. Surprisingly, cathodal HD-tDCS selectively improved temporal dynamics of the attentional suppression effect under the audiovisual condition. The present study revealed the differential enhancement of HD-tDCS on cognitive control over visual and audiovisual memory-driven attention among individuals with SUD.
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Atenção , Memória de Curto Prazo , Transtornos Relacionados ao Uso de Substâncias , Estimulação Transcraniana por Corrente Contínua , Humanos , Masculino , Estimulação Transcraniana por Corrente Contínua/métodos , Memória de Curto Prazo/fisiologia , Atenção/fisiologia , Adulto , Adulto Jovem , Transtornos Relacionados ao Uso de Substâncias/fisiopatologia , Transtornos Relacionados ao Uso de Substâncias/terapia , Córtex Pré-Frontal Dorsolateral/fisiologia , Percepção Visual/fisiologiaRESUMO
Sea buckthorn, a traditional medicinal plant, has been used for several years in China for the prevention and treatment of various diseases, a practice closely associated with its significant antioxidant activity. The aim of this study was to investigate the protective effects of sea buckthorn flavonoids on vascular endothelial cells in an oxidative stress environment. We isolated and extracted active compounds from sea buckthorn and investigated their impact on endothelial nitric oxide synthase (eNOS) activity through the PI3K/AKT-eNOS signaling pathway through a combination of network pharmacology and cellular experiments, elucidating the regulatory effects of these compounds on endothelial cell functions. Three flavonoids, named Fr.4-2-1, Fr.4-2-2 and Fr.4-2-3, were obtained from sea buckthorn. The results of network pharmacology indicated that they might exert their effects by regulating the PI3K-AKT signaling pathway. In vitro results showed that all three flavonoids were effective in alleviating the degree of oxidative stress in cells, among which Fr.4-2-1 exerted its antioxidant effects by modulating the PI3K/AKT-eNOS pathway. Flavonoids in sea buckthorn can effectively inhibit oxidative stress-induced cellular damage, preserving the integrity and functionality of endothelial cells, which is crucial for maintaining vascular health and function.
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Flavonoides , Hippophae , Óxido Nítrico Sintase Tipo III , Estresse Oxidativo , Fosfatidilinositol 3-Quinases , Proteínas Proto-Oncogênicas c-akt , Transdução de Sinais , Hippophae/química , Óxido Nítrico Sintase Tipo III/metabolismo , Flavonoides/farmacologia , Flavonoides/isolamento & purificação , Flavonoides/química , Proteínas Proto-Oncogênicas c-akt/metabolismo , Estresse Oxidativo/efeitos dos fármacos , Fosfatidilinositol 3-Quinases/metabolismo , Transdução de Sinais/efeitos dos fármacos , Humanos , Antioxidantes/farmacologia , Antioxidantes/química , Antioxidantes/isolamento & purificação , Células Endoteliais/efeitos dos fármacos , Células Endoteliais/metabolismo , Células Endoteliais da Veia Umbilical Humana/efeitos dos fármacos , Células Endoteliais da Veia Umbilical Humana/metabolismo , Sobrevivência Celular/efeitos dos fármacos , Substâncias Protetoras/farmacologia , Substâncias Protetoras/química , Substâncias Protetoras/isolamento & purificaçãoRESUMO
OBJECTIVE: The objective of this study was to assess the characterization of human acellular amniotic membrane (HAAM) using various decellularization methods and their impact on the proliferation and differentiation of human dental pulp stem cells (DPSCs). The goal was to identify scaffold materials that are better suited for pulp regeneration. METHODS: Six different decellularization methods were used to generate the amniotic membranes. The characteristics of these scaffolds were examined through hematoxylin and eosin (H&E) staining, scanning electron microscopy (SEM), and immunohistofluorescence staining (IHF). The DPSCs were isolated, cultured, and their capacity for multidirectional differentiation was verified. The third generation (P3) DPSCs, were then combined with HAAM to form the decellularized amniotic scaffold-dental pulp stem cell complex (HAAM-DPSCs complex). Subsequently, the osteogenic capacity of the HAAM-DPSCs complex was evaluated using CCK8 assay, live-dead cell staining, alizarin red and alkaline phosphatase staining, and real-time quantitative PCR (RT-PCR). RESULTS: Out of the assessed decellularization methods, the freeze-thaw + DNase method and the use of ionic detergent (CHAPS) showed minimal changes in structure after decellularization, making it the most effective method. The HAAM-DPSCs complexes produced using this method demonstrated enhanced biological properties, as indicated by CCK8, alizarin red, alkaline phosphatase staining, and RT-PCR. CONCLUSION: The HAAM prepared using the freeze-thaw + DNase method and CHAPS methods exhibited improved surface characteristics and significantly enhanced the proliferation and differentiation capacity of DPSCs when applied to them. The findings, therefore demonstrate the capacity for enhanced pulp regeneration therapy.
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Âmnio , Antraquinonas , Polpa Dentária , Humanos , Âmnio/metabolismo , Células Cultivadas , Fosfatase Alcalina/metabolismo , Células-Tronco/metabolismo , Regeneração , Osteogênese , Diferenciação Celular , Desoxirribonucleases/metabolismo , Proliferação de CélulasRESUMO
Reduced graphene oxide (rGO) is an graphene oxide (GO) derivative of graphene, which has a large specific surface area and exhibited satisfactory physicochemical characteristics. In this experiment, GO was reduced by PDA to generate PDA-GO complex, and then PDA-GO was combined with Chitosan (CS) to synthesize PDA-GO/CS composite scaffold. PDA-GO was added to CS to improve the degradation rate of CS, and it was hoped that PDA-GO/CS composite scaffolds could be used in bone tissue engineering. Physicochemical and antimicrobial properties of the different composite scaffolds were examined to find the optimal mass fraction. Besides, we examined the scaffold's biocompatibility by Phalloidin staining and Live and Dead fluorescent staining.Finally, we applied ALP staining, RT-qPCR, and Alizarin red S staining to detect the effect of PDA-GO/CS on the osteogenic differentiation of human dental pulp stem cells (hDPSCs). The results showed that PDA-GO composite was successfully prepared and PDA-GO/CS composite scaffold was synthesized by combining PDA-GO with CS. Among them, 0.3%PDA-GO/CS scaffolds improves the antibacterial activity and hydrophilicity of CS, while reducing the degradation rate. In vitro, PDA-GO/CS has superior biocompatibility and enhances the early proliferation, migration and osteogenic differentiation of hDPSCs. In conclusion, PDA-GO/CS is a new scaffold materialsuitable for cell culture and has promising application prospect as scaffold for bone tissue engineering.
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Quitosana , Grafite , Humanos , Quitosana/farmacologia , Alicerces Teciduais/química , Grafite/farmacologia , Grafite/química , Osteogênese , Polpa Dentária , Diferenciação Celular , Células-TroncoRESUMO
We probed the lifecycle of Epstein-Barr virus (EBV) on a cell-by-cell basis using single cell RNA sequencing (scRNA-seq) data from nine publicly available lymphoblastoid cell lines (LCLs). While the majority of LCLs comprised cells containing EBV in the latent phase, two other clusters of cells were clearly evident and were distinguished by distinct expression of host and viral genes. Notably, both were high expressors of EBV LMP1/BNLF2 and BZLF1 compared to another cluster that expressed neither gene. The two novel clusters differed from each other in their expression of EBV lytic genes, including glycoprotein gene GP350. The first cluster, comprising GP350- LMP1hi cells, expressed high levels of HIF1A and was transcriptionally regulated by HIF1-α. Treatment of LCLs with Pevonedistat, a drug that enhances HIF1-α signaling, markedly induced this cluster. The second cluster, containing GP350+ LMP1hi cells, expressed EBV lytic genes. Host genes that are controlled by super-enhancers (SEs), such as transcription factors MYC and IRF4, had the lowest expression in this cluster. Functionally, the expression of genes regulated by MYC and IRF4 in GP350+ LMP1hi cells were lower compared to other cells. Indeed, induction of EBV lytic reactivation in EBV+ AKATA reduced the expression of these SE-regulated genes. Furthermore, CRISPR-mediated perturbation of the MYC or IRF4 SEs in LCLs induced the lytic EBV gene expression, suggesting that host SEs and/or SE target genes are required for maintenance of EBV latency. Collectively, our study revealed EBV-associated heterogeneity among LCLs that may have functional consequence on host and viral biology.
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Infecções por Vírus Epstein-Barr , Herpesvirus Humano 4 , Análise de Célula Única , Humanos , Linhagem Celular , Análise de Dados , Infecções por Vírus Epstein-Barr/genética , Infecções por Vírus Epstein-Barr/metabolismo , Herpesvirus Humano 4/genética , Herpesvirus Humano 4/metabolismo , Latência Viral , Linfócitos/metabolismo , Linfócitos/virologiaRESUMO
IL-9-producing Th cells, termed Th9 cells, contribute to immunity against parasites and cancers but have detrimental roles in allergic disease and colitis. Th9 cells differentiate in response to IL-4 and TGF-ß, but these signals are insufficient to drive Th9 differentiation in the absence of IL-2. IL-2-induced STAT5 activation is required for chromatin accessibility within Il9 enhancer and promoter regions and directly transactivates the Il9 locus. STAT5 also suppresses gene expression during Th9 cell development, but these roles are less well defined. In this study, we demonstrate that human allergy-associated Th9 cells exhibited a signature of STAT5-mediated gene repression that is associated with the silencing of a Th17-like transcriptional signature. In murine Th9 cell differentiation, blockade of IL-2/STAT5 signaling induced the expression of IL-17 and the Th17-associated transcription factor Rorγt. However, IL-2-deprived Th9 cells did not exhibit a significant Th17- or STAT3-associated transcriptional signature. Consistent with these observations, differentiation of IL-17-producing cells under these conditions was STAT3-independent but did require Rorγt and BATF. Furthermore, ectopic expression of Rorγt and BATF partially rescued IL-17 production in STAT3-deficient Th17 cells, highlighting the importance of these factors in this process. Although STAT3 was not required for the differentiation of IL-17-producing cells under IL-2-deprived Th9 conditions, their prolonged survival was STAT3-dependent, potentially explaining why STAT3-independent IL-17 production is not commonly observed in vivo. Together, our data suggest that IL-2/STAT5 signaling plays an important role in controlling the balance of a Th9 versus a Th17-like differentiation program in vitro and in allergic disease.
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Fator de Transcrição STAT5 , Células Th17 , Animais , Diferenciação Celular , Regulação da Expressão Gênica , Humanos , Interleucina-9/genética , Interleucina-9/metabolismo , Camundongos , Fator de Transcrição STAT3/metabolismo , Fator de Transcrição STAT5/metabolismo , Células Th17/metabolismoRESUMO
AIM: To design a protocol based on the experiences of long-term survivors to facilitate resilience for oesophageal cancer patients in rural China. BACKGROUND: According to the latest Global Cancer Statistics Report, 604,000 new cases of oesophageal cancer were reported, of which over 60% of the disease burden is distributed in China. The incidence of oesophageal cancer in rural China (15.95/100,000) is twice as high as those in urban areas (7.59/100,000). To be sure, resilience can help patients better adapt to post-cancer life. But universal interventions involving improving the resilience of oesophageal cancer patients have much less been explored, especially for rural patients. METHODS: The two-arm, parallel design, non-blinded, randomised controlled trial will be implemented in 86 adults diagnosed with oesophageal cancer and will be randomly assigned to the control group or the intervention group via the blocked randomisation. The intervention group will undergo an intervention with one-on-one guidance from a nurse while viewing a CD of the experiences of long-term survivors with oesophageal cancer in rural areas. Every 2 weeks, a theme session will be introduced, and the entire intervention will continue for 12 weeks. Psychosocial variables (resilience, self-efficacy, coping mode and family support) will be surveyed at baseline, post-intervention and 3 months after the intervention. The paper complies with the Standard Protocol Items: Recommendations for Intervention Trials 2013 and Consolidated Standards of Reporting Trials guidelines for study protocols adapted for designing and reporting parallel group randomised trials. CONCLUSION: The intervention programme transitions from hospitalisation to discharge, which includes one-on-one interventions by medical personnel and a portable CD describing the experiences of long-term survivors with rural oesophageal cancer. Once the intervention's effectiveness is proven, this protocol will provide psychological support for massive oesophageal cancer patients. RELEVANCE TO CLINICAL PRACTICE: The intervention programme may be used as an auxiliary therapy to promote patients' postoperative psychological rehabilitation. This programme has the advantages of being cost-effective, flexible, accessible, and convenient and can be implemented without the limitation of time, place and clinical medical staff. TRIAL REGISTRATION: The Chinese Clinical Trial Registration number is ChiCTR2100050047. Registered on 16 August 2021.
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COVID-19 , Neoplasias Esofágicas , Adulto , Humanos , SARS-CoV-2 , Sobreviventes , Efeitos Psicossociais da Doença , Resultado do Tratamento , Ensaios Clínicos Controlados Aleatórios como AssuntoRESUMO
Polyhydroxyalkanoates (PHAs) are microbial polyesters that have the potential to replace nonbiodegradable petroplastics. A real-time in situ PHA quantification method has long been awaited to replace the traditional method, which is time- and labor-consuming. Quantification of PHA in living cells was finally developed from fluorescence intensities generated from the green fluorescence protein (GFP) fused with the Halomonas bluephagenesis phasin proteins. Phasins PhaP1 and PhaP2 were used to fuse with GFP, which reflected PHA accumulation with an R-square of over 0.9. Also, a standard correlation was established to calculate PHA contents based on the fluorescence and cell density recorded via a microplate reader with an R-square of over 0.95 when grown on various substrates. The PhaP2-GFP containing H. bluephagenesis was applied successfully to quantify PHA synthesis in a 7.5 L fermenter with high precision. Moreover, the method was found to be feasible in non-natural PHA producers such as Escherichia coli, demonstrating its broad applicability.
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Poli-Hidroxialcanoatos , Proteínas de Bactérias/química , Escherichia coli/genética , Escherichia coli/metabolismo , Fluorescência , Proteínas de Fluorescência Verde/genética , Proteínas de Fluorescência Verde/metabolismo , Lectinas de Plantas , Poliésteres/metabolismo , Poli-Hidroxialcanoatos/metabolismoRESUMO
The Epstein-Barr virus (EBV) episome is known to interact with the three-dimensional structure of the human genome in infected cells. However, the exact locations of these interactions and their potential functional consequences remain unclear. Recently, high-resolution chromatin conformation capture (Hi-C) assays in lymphoblastoid cells have become available, enabling us to precisely map the contacts between the EBV episome(s) and the human host genome. Using available Hi-C data at a 10-kb resolution, we have identified 15,000 reproducible contacts between EBV episome(s) and the human genome. These contacts are highly enriched in chromatin regions denoted by typical or super enhancers and active markers, including histone H3K27ac and H3K4me1. Additionally, these contacts are highly enriched at loci bound by host transcription factors that regulate B cell growth (e.g., IKZF1 and RUNX3), factors that enhance cell proliferation (e.g., HDGF), or factors that promote viral replication (e.g., NBS1 and NFIC). EBV contacts show nearly 2-fold enrichment in host regions bound by EBV nuclear antigen 2 (EBNA2) and EBNA3 transcription factors. Circular chromosome conformation capture followed by sequencing (4C-seq) using the EBV origin of plasmid replication (oriP) as a "bait" in lymphoblastoid cells further confirmed contacts with active chromatin regions. Collectively, our analysis supports interactions between EBV episome(s) and active regions of the human genome in lymphoblastoid cells.IMPORTANCE EBV is associated with â¼200,000 cancers each year. In vitro, EBV can transform primary human B lymphocytes into immortalized cell lines. EBV-encoded proteins, along with noncoding RNAs and microRNAs, hijack cellular proteins and pathways to control cell growth. EBV nuclear proteins usurp normal transcriptional programs to activate the expression of key oncogenes, including MYC, to provide a proliferation signal. EBV nuclear antigens also repress CDKN2A to suppress senescence. EBV membrane protein activates NF-κB to provide survival signals. EBV genomes are maintained by EBNA1, which tethers EBV episomes to the host chromosomes during mitosis. However, little is known about where EBV episomes are located in interphase cells. In interphase cells, EBV promoters drive the expression of latency genes, while oriP functions as an enhancer for these promoters. In this study, integrative analyses of published lymphoblastoid cell line (LCL) Hi-C data and our 4C-seq experiments position EBV episomes to host genomes with active epigenetic marks. These contact points were significantly enriched for super enhancers. The close proximity of EBV episomes and the super enhancers that are enriched for transcription cofactors or mediators in lymphoblasts may benefit EBV gene expression, suggesting a novel mechanism of transcriptional activation.
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Genoma , Herpesvirus Humano 4/genética , Herpesvirus Humano 4/metabolismo , Interações Hospedeiro-Patógeno/genética , Interações Hospedeiro-Patógeno/fisiologia , Plasmídeos/metabolismo , Proteínas Virais/metabolismo , Linfócitos B/virologia , Linhagem Celular , Cromatina , Subunidade alfa 3 de Fator de Ligação ao Core/metabolismo , Infecções por Vírus Epstein-Barr , Regulação Viral da Expressão Gênica , Histonas/metabolismo , Humanos , Fator de Transcrição Ikaros/metabolismo , Fatores de Transcrição/metabolismo , Replicação ViralRESUMO
OBJECTIVES: Sleep disturbances and fatigue are common in prostate cancer patients undergoing radiotherapy. Prior research suggests mind-body techniques may improve these outcomes. We conducted a randomized controlled trial of qigong/tai chi (QGTC) in men with prostate cancer undergoing radiotherapy. METHODS: Men with prostate cancer starting definitive radiation were randomized to 1 of 3 groups: (1) QGTC; (2) light exercise (LE); or (3) waiting list control. Sleep disturbances (Pittsburgh Sleep Quality Index) and fatigue (Brief Fatigue Inventory) were assessed at baseline, midway through radiotherapy (T2), during the last week of radiotherapy (T3), and at 1 (T4) and 3 months (T5) after the end of radiotherapy. Patients in the QGTC and LE groups attended three 40-minute classes per week throughout radiotherapy. RESULTS: Ninety patients were randomized to the 3 groups (QGTC = 26; LE = 26; waiting list control = 24). The QGTC group reported longer sleep duration midway through radiotherapy (QGTC = 7.01 h; LE = 6.42; WL = 6.50; P = .05), but this difference did not persist over time. There were no group differences in other domains of sleep or fatigue. Exploratory analyses conducted to examine the effect of health-related quality of life (Expanded Prostate Cancer Index Composite and American Urological Association Symptom score) on sleep and fatigue showed significant correlations across multiple domains. CONCLUSIONS: Qigong/tai chi during radiation for prostate cancer resulted in superior sleep duration midway through radiation, but this effect was not durable, and there were no differences in other domains of sleep or fatigue. Exploratory analysis demonstrated that both sleep and fatigue were highly correlated with prostate cancer-related physical symptoms. Future mind-body intervention studies should incorporate multimodal therapy focused on improving physical symptoms in this population.
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Exercício Físico , Fadiga/terapia , Neoplasias da Próstata/radioterapia , Qigong , Qualidade de Vida , Transtornos do Sono-Vigília/terapia , Tai Chi Chuan , Listas de Espera , Idoso , Humanos , Masculino , Pessoa de Meia-Idade , Avaliação de Resultados em Cuidados de Saúde , Neoplasias da Próstata/psicologia , Sono , TexasRESUMO
Introduction: Representations in working memory can affect distractor suppression in human visual search, and this process is modulated by a separate top-down cognitive control. An increasing body of research has demonstrated that patients with substance use disorder (SUD) have deficits in cognitive control over filtering interference by perceptual distractors. However, their ability to resist proactive interference from working memory has received comparatively less attention. Methods: Here, we investigate this issue by employing a working memory/visual search dual-task paradigm. An intervening gap-location search task was instructed to be performed while participants memorized a written color word, with congruent auditory information present during the memory encoding phase on half of the trials. Results: Results showed that there was a reliable response time (RT) advantage when the meaning of the memory sample agreed with the color of one of the distractors under the visual alone condition. However, such a result was only found in the control group. More importantly, both groups exhibited comparable facilitation under the audiovisual condition, with the facilitation effect appearing later in the SUD group. Furthermore, the facilitation effect was superior in magnitude and time course under the audiovisual condition to the visual alone condition. Discussion: These findings highlight how patients with SUD resist distractor interference at the memory level and extend our understanding of how working memory, selective attention, and audiovisual enhancement interact to optimize perceptual decisions in patients with SUD.
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OBJECTIVES: This study aimed to investigate the in vitro effects of root canal filling and repair paste (nRoot BP) on human dental pulp stem cells (hDPSCs). METHODS: The effects of nRoot BP and iRoot BP Plus on the adhesion, proliferation, migration, and differentiation of hDPSCs were examined in vitro for 72 hours. The adhesion of cells was observed using immunofluorescence rhodamine ghost pen cyclic peptide staining and scanning electron microscopy (SEM). Cell density and changes in migration area were measured under a fluorescence inverted microscope. Fluorescent quantitative PCR was performed to detect genes related to odontogenesis and osteogenesis. RESULTS: Cells adhering to the surfaces of nRoot BP and iRoot BP Plus exhibited similar irregular polygonal morphologies, with cells extending irregular pseudopods to adhere to the materials. CCK-8 results indicated that the density of living cells for nRoot BP and iRoot BP Plus was lower than that of the blank control group at 3 and 5 days of culture. There was no significant difference in cell migration between the groups (P > .05). The migration ability of iRoot BP Plus and nRoot BP was similar to that of the control group. Both nRoot BP and iRoot BP Plus increased the expression of the RUNX2 gene, but there was no significant difference between the groups (P < .05). Furthermore, both nRoot BP and iRoot BP Plus downregulated the expression of the DSPP gene, with no significant difference between them (P > .05). CONCLUSIONS: nRoot BP exhibited a slight inhibition of hDPSC proliferation but did not affect the adhesion and migration of hDPSCs. The impact of nRoot BP on the osteogenic and odontogenic differentiation of hDPSCs was similar to that of iRoot BP Plus.
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Adesão Celular , Diferenciação Celular , Movimento Celular , Proliferação de Células , Cerâmica , Polpa Dentária , Materiais Restauradores do Canal Radicular , Células-Tronco , Humanos , Polpa Dentária/citologia , Polpa Dentária/efeitos dos fármacos , Células-Tronco/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Movimento Celular/efeitos dos fármacos , Diferenciação Celular/efeitos dos fármacos , Adesão Celular/efeitos dos fármacos , Materiais Restauradores do Canal Radicular/farmacologia , Nanopartículas , Osteogênese/efeitos dos fármacos , Microscopia Eletrônica de Varredura , Células Cultivadas , Combinação de Medicamentos , Subunidade alfa 1 de Fator de Ligação ao Core , Técnicas In Vitro , Odontogênese/efeitos dos fármacos , Materiais Biocompatíveis/farmacologia , SilicatosRESUMO
Restrictive dieters are those who expect to achieve body shape and weight control through dieting. However, they often have difficulty suppressing the desire to consume food when confronted with it. It has been shown that when high- and low-calorie foods are presented together, the attention of restrictive eaters is preferentially directed to high-calorie foods. However, whether attentional bias occurs when low-calorie foods are present alone and whether the allocation of attentional resources is consistent with that for high-calorie foods has yet to be explored. The present study focused on the effects of high-/low-calorie foods on attentional bias in restrictive dieters. Seventy-eight participants were recruited to participate in the experiment via the Dutch Eating Behavior Questionnaire (DEBQ) scale, which is administered in a rapid serial visual presentation (RSVP) task. The results revealed that failed restrictive dieters had the lowest percentage of correct answers at the lag2 level, indicating attentional bias. Failed restrictive dieters allocated more attentional resources to high-calorie foods than to low-calorie foods. Restrictive dieters showed no attentional bias when low-calorie foods were presented alone. The results suggest that low-calorie foods do not elicit an attentional bias in restrictive dieters and that the allocation of attentional resources is not consistent when compared to that for high-calorie foods.
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Attentional blink (AB) is a phenomenon in which the perception of a second target is impaired when it appears within 200-500 ms after the first target. Sound affects an AB and is accompanied by the appearance of an asymmetry during audiovisual integration, but it is not known whether this is related to the tonal representation of sound. The aim of the present study was to investigate the effect of audiovisual asymmetry on attentional blink and whether the presentation of pitch improves the ability to detect a target during an AB that is accompanied by audiovisual asymmetry. The results showed that as the lag increased, the subject's target recognition improved and the pitch produced further improvements. These improvements exhibited a significant asymmetry across the audiovisual channel. Our findings could contribute to better utilizations of audiovisual integration resources to improve attentional transients and auditory recognition decline, which could be useful in areas such as driving and education.
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PURPOSE: The objective of this randomized controlled trial was to examine the effectiveness of promoted resilience intervention to facilitate resilience, self-efficacy, coping mode, and social support for oesophageal cancer patients in rural China. METHODS: A two-arm, parallel design, single-blinded, randomized controlled trial was conducted in a comprehensive tertiary hospital in Anhui from August 2021 to September 2022. A total of 82 oesophageal cancer patients were assigned to two groups via blocked randomization. The intervention group (n = 41) received the Promoted Psychological Resilience Intervention based on survivors' experiences and the control group (n = 41) received routine care. Study data were collected using the sociodemographic information, Connor-Davidson Resilience Scale, Strategies Used by People to Promote Health, Medical Coping Modes Questionnaire, and Perceived Social Support Scale. RESULTS: The groups were well-balanced at baseline. Post-intervention and three months after intervention, the resilience, self-efficacy, acceptance-resignation, and social support were all significantly different in the intervention and control groups (p < 0.05 for each). The main effect of group, time, and the interaction between group and time was statistically significant in the scores of resilience, self-efficacy, acceptance-resignation, and social support, except for the factor of self-determination and friends support (p < 0.05 for each). CONCLUSIONS: This study demonstrated that an intervention program based on the experiences of long-term oesophageal cancer survivors can promote patients' resilience.
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Neoplasias Esofágicas , Testes Psicológicos , Resiliência Psicológica , Humanos , Adaptação Psicológica , Promoção da Saúde , ChinaRESUMO
ETHNOPHARMACOLOGICAL RELEVANCE: The extracellular regulated protein kinase (ERK) plays a crucial role in the mitogen-activated protein kinase (MAPK) family, influencing apoptosis, proliferation, and differentiation. It connection to the insulin (INS) signaling cascade and the development of type 2 diabetes mellitus (T2DM) has been established. Rubus irritans Focke, an indispensable herb in Chinese Tibetan medicine for diabetes mellitus treatment, lacks a comprehensive understanding of its effects and pharmacological mechanisms in T2DM. AIM OF THE STUDY: This study aimed to elucidate the effects of Rubus irritans Focke extract (Rife) on a T2DM rat model, exploring its impact on glycemic and lipid metabolism, histopathological changes, and its potential targeting of the extracellular regulated protein kinase/insulin receptor substrate-1 (ERK/IRS-1) signaling pathway. MATERIALS AND METHODS: A T2DM rat model was induced by streptozotocin (STZ) injection (40 mg/kg) in high-fat diet-fed (HFD) male Wistar rats. Rife and metformin (Met) were administered for 4 weeks, and glycemic, lipid metabolism indices, and histopathological changes were assessed. Protein expression of ERK, IRS-1 in rat liver tissues was examined to evaluate the impact on the ERK/IRS-1 pathway. RESULTS: Rife reducing hepatic ERK and IRS-1 protein expression in T2DM rats. Untargeted metabolomics identified 13 potential biomarkers and 4 differential metabolic pathways related to glycolipid metabolism disorders. CONCLUSIONS: Rife demonstrated improved glycolipid metabolism in T2DM rats by inhibiting the ERK/IRS-1 related signaling pathway and influencing multiple metabolic pathways. This study provides valuable insights into the potential therapeutic mechanisms of Rife in the context of T2DM.
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Diabetes Mellitus Experimental , Diabetes Mellitus Tipo 2 , Glicolipídeos , Hipoglicemiantes , Proteínas Substratos do Receptor de Insulina , Extratos Vegetais , Ratos Wistar , Animais , Masculino , Proteínas Substratos do Receptor de Insulina/metabolismo , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/metabolismo , Extratos Vegetais/farmacologia , Glicolipídeos/farmacologia , Diabetes Mellitus Experimental/tratamento farmacológico , Diabetes Mellitus Experimental/metabolismo , Ratos , Hipoglicemiantes/farmacologia , Transdução de Sinais/efeitos dos fármacos , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , MAP Quinases Reguladas por Sinal Extracelular/metabolismo , Metabolismo dos Lipídeos/efeitos dos fármacos , Glicemia/efeitos dos fármacos , Fígado/efeitos dos fármacos , Fígado/metabolismo , Fígado/patologia , EstreptozocinaRESUMO
AIM: A specific, valid and reliable measure is much needed to dynamically assess the recovery of symptoms in oesophagectomy patients. This study describes developing and validating the Convalescent Symptom Assessment Scale for oesophagectomy patients (CSAS_EC). DESIGN: An instrument development and cross-sectional validation study was conducted. METHODS: This study consists of two components: instrument development and psychometric tests. In instrument development, the literature review, qualitative interviews, Delphi method expert consultation and face validation were used to develop and refine scale content. In psychometric tests, the clinical test version scale was used to conduct a cross-sectional in the thoracic surgery department from 17 June to 20 November 2022. The Classical Test Theory and Multidimensional Item Response Theory (MIRT) analyses examined psychometric properties. RESULTS: In instrument development, literature review (n = 20), qualitative interviews (n = 21), expert consultation (n = 12) and pre-survey (n = 15) led to the development of the clinical test version scale. In psychometric tests, a total of 331 participants were enrolled. Confirmatory factor analysis and MIRT analysis verified that a model with 28 items in four dimensions was good. The four dimensions were early recovery symptoms, late recovery symptoms, persistent present symptoms and psychosocial symptoms. The Cronbach's α is 0.827. The validity and reliability were demonstrated to be acceptable. CONCLUSIONS: The CSAS_EC scale can be used as a tool to evaluate the recovery status of oesophagectomy patients.
Assuntos
Convalescença , Esofagectomia , Humanos , Estudos Transversais , Esofagectomia/efeitos adversos , Reprodutibilidade dos Testes , Avaliação de SintomasRESUMO
Rubus irritans Focke is a type of tonifying kidney-essence herb used in China. We present the complete chloroplast (cp) genome of R. irritans, a member of the genus Rubus. The complete cp genome of R. irritans was 155,286 bp long and consisted of an 84,613 bp long large single-copy (LSC) region, an 18,697 bp long SSC region, and a pair of 25,988 bp long inverted repeats (IR). Furthermore, the plastid genome contained 130 genes, including 85 protein-coding genes, 37 tRNA genes, and 8 rRNA genes. The overall GC content of the genome was 37.29%. Based on the complete cp genome, phylogenetic analysis revealed that R. irritans is closely related to R. amabilis.
RESUMO
In the rapid serial visual presentation (RSVP) paradigm, sound affects participants' recognition of targets. Although many studies have shown that sound improves cross-modal processing, researchers have not yet explored the effects of sound semantic information with respect to different locations and processing modalities after removing sound saliency. In this study, the RSVP paradigm was used to investigate the difference between attention under conditions of consistent and inconsistent semantics with the target (Experiment 1), as well as the difference between top-down (Experiment 2) and bottom-up processing (Experiment 3) for sounds with consistent semantics with target 2 (T2) at different sequence locations after removing sound saliency. The results showed that cross-modal processing significantly improved attentional blink (AB). The early or lagged appearance of sounds consistent with T2 did not affect participants' judgments in the exogenous attentional modality. However, visual target judgments were improved with endogenous attention. The sequential location of sounds consistent with T2 influenced the judgment of auditory and visual congruency. The results illustrate the effects of sound semantic information in different locations and processing modalities.