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1.
Biol Pharm Bull ; 47(3): 680-691, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38522942

RESUMO

Cholelithiasis, commonly known as gallstones, represents a prevalent hepatobiliary disorder. This study aimed to elucidate the therapeutic role and mechanism of Danyankang capsulein treating cholelithiasis induced by a high-fat diet in C57BL/6 mice. The therapeutical potential of Danyankang was assessed through biochemical analyses, histopathological examinations, protein detection, and 16S rDNA sequencing. A high-fat diet resulted in cholelithiasis manifestation in mice, with discernable abnormal serum biochemical indices and disrupted biliary cholesterol homeostasis. Danyankang treatment notably ameliorated liver inflammation symptoms and rectified serum and liver biochemical abnormalities. Concurrently, it addressed biliary imbalances. Elevated expressions of toll-like receptor 4 (TLR4), nuclear factor-kappaB (NF-κB)/pNF-κB, HMGCR, CYP7A1, and CYP8B1 observed at the inception of cholelithiasis, were notably reduced upon Danyankang administration. Furthermore, 16S rDNA analysis revealed a decline in species number and diversity of the intestinal flora in cholelithiasis-treated mice, while the decline was reversed with Danyankang treatment. Danyankang capsules reduced the abundance of Verrucomicrobiota and increased the abundance of Actinobacteriota and Proteobacteria. In conclusion, the present study demonstrates that Danyankang exerts potent therapeutic efficacy against high-fat diet-induced cholelithiasis. This beneficial outcome is potentially linked to the inhibition of the TLR4/pNF-κB and SHP/CYP7A1/CYP8B1 signaling pathways, as well as the enhancement of intestinal flora species abundance.


Assuntos
Colelitíase , Microbioma Gastrointestinal , Camundongos , Animais , Dieta Hiperlipídica/efeitos adversos , Receptor 4 Toll-Like/genética , Receptor 4 Toll-Like/metabolismo , Esteroide 12-alfa-Hidroxilase , Camundongos Endogâmicos C57BL , Fígado/metabolismo , NF-kappa B/metabolismo , Colelitíase/tratamento farmacológico , Colelitíase/patologia , DNA Ribossômico
2.
Cell Discov ; 10(1): 36, 2024 Mar 29.
Artigo em Inglês | MEDLINE | ID: mdl-38548762

RESUMO

Internal N6-methyladenosine (m6A) modifications are among the most abundant modifications of messenger RNA, playing a critical role in diverse biological and pathological processes. However, the functional role and regulatory mechanism of m6A modifications in the immune response to Mycobacterium tuberculosis infection remains unknown. Here, we report that methyltransferase-like 14 (METTL14)-dependent m6A methylation of NAPDH oxidase 2 (Nox2) mRNA was crucial for the host immune defense against M. tuberculosis infection and that M. tuberculosis-secreted antigen EsxB (Rv3874) inhibited METTL14-dependent m6A methylation of Nox2 mRNA. Mechanistically, EsxB interacted with p38 MAP kinase and disrupted the association of TAB1 with p38, thus inhibiting the TAB1-mediated autophosphorylation of p38. Interaction of EsxB with p38 also impeded the binding of p38 with METTL14, thereby inhibiting the p38-mediated phosphorylation of METTL14 at Thr72. Inhibition of p38 by EsxB restrained liquid-liquid phase separation (LLPS) of METTL14 and its subsequent interaction with METTL3, preventing the m6A modification of Nox2 mRNA and its association with the m6A-binding protein IGF2BP1 to destabilize Nox2 mRNA, reduce ROS levels, and increase intracellular survival of M. tuberculosis. Moreover, deletion or mutation of the phosphorylation site on METTL14 impaired the inhibition of ROS level by EsxB and increased bacterial burden or histological damage in the lungs during infection in mice. These findings identify a previously unknown mechanism that M. tuberculosis employs to suppress host immunity, providing insights that may empower the development of effective immunomodulators that target M. tuberculosis.

3.
Autoimmunity ; 57(1): 2259137, 2024 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38439147

RESUMO

Autophagy is implicated in the pathogenesis of psoriasis. We aimed to identify autophagy-related biomarkers in psoriasis via an integrated bioinformatics approach. We downloaded the gene expression profiles of GSE30999 dataset, and the "limma" package was applied to identify differentially expressed genes (DEGs). Then, differentially expressed autophagy-related genes (DEARGs) were identified via integrating autophagy-related genes with DEGs. CytoHubba plugin was used for the identification of hub genes and verified by the GSE41662 dataset. Subsequently, a series of bioinformatics analyses were employed, including protein-protein interaction network, functional enrichment, spearman correlation, receiver operating characteristic, and immune infiltration analyses. One hundred and one DEARGs were identified, and seven DEARGs were identified as hub genes and verified using the GSE41662 dataset. These validated genes had good diagnostic value in distinguishing psoriasis lesions. Immune infiltration analysis indicated that ATG5, SQSTM1, EGFR, MAPK8, MAPK3, MYC, and PIK3C3 were correlated with infiltration of immune cells. Seven DEARGs, namely ATG5, SQSTM1, EGFR, MAPK8, MAPK3, MYC, and PIK3C3, may be involved in the pathogenesis of psoriasis, which expanded the understanding of the development of psoriasis and provided important clinical significance for treatment of this disease.


Assuntos
Psoríase , Humanos , Proteína Sequestossoma-1 , Psoríase/diagnóstico , Psoríase/genética , Biomarcadores , Biologia Computacional , Autofagia/genética , Receptores ErbB
4.
RSC Adv ; 13(48): 34194-34199, 2023 Nov 16.
Artigo em Inglês | MEDLINE | ID: mdl-38020016

RESUMO

Ni-rich cathode materials suffer from rapid capacity fading caused by interface side reactions and bulk structure degradation. Previous studies show that Co is conducive to bulk structure stability and sulfate can react with the residual lithium (LiOH and Li2CO3) on the surface of Ni-rich cathode materials and form a uniform coating to suppress the side reactions between the cathode and electrolyte. Here, CoSO4 is utilized as a modifier for LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode materials. It reacts with the residual lithium on the surface of the NCM811 cathode to form Li-ion conductive Li2SO4 protective layers and Co doping simultaneously during the high-temperature sintering process, which can suppress the side reactions between the Ni-rich cathode and electrolyte and effectively prevent the structural transformation. As a result, the co-modified NCM811 cathode with 3 wt% CoSO4 exhibits an improved cycling performance of 81.1% capacity retention after 200 cycles at 1C and delivers an excellent rate performance at 5C of 187.4 mA h g-1, which is 10.2% higher than that of the pristine NCM811 cathode.

5.
Cell Host Microbe ; 31(11): 1820-1836.e10, 2023 11 08.
Artigo em Inglês | MEDLINE | ID: mdl-37848028

RESUMO

Mycobacterium tuberculosis (Mtb) triggers distinct changes in macrophages, resulting in the formation of lipid droplets that serve as a nutrient source. We discover that Mtb promotes lipid droplets by inhibiting DNA repair responses, resulting in the activation of the type-I IFN pathway and scavenger receptor-A1 (SR-A1)-mediated lipid droplet formation. Bacterial urease C (UreC, Rv1850) inhibits host DNA repair by interacting with RuvB-like protein 2 (RUVBL2) and impeding the formation of the RUVBL1-RUVBL2-RAD51 DNA repair complex. The suppression of this repair pathway increases the abundance of micronuclei that trigger the cyclic GMP-AMP synthase (cGAS)/stimulator of interferon genes (STING) pathway and subsequent interferon-ß (IFN-ß) production. UreC-mediated activation of the IFN-ß pathway upregulates the expression of SR-A1 to form lipid droplets that facilitate Mtb replication. UreC inhibition via a urease inhibitor impaired Mtb growth within macrophages and in vivo. Thus, our findings identify mechanisms by which Mtb triggers a cascade of cellular events that establish a nutrient-rich replicative niche.


Assuntos
Interferon Tipo I , Mycobacterium tuberculosis , Mycobacterium tuberculosis/genética , Urease/metabolismo , Interferon beta/metabolismo , Interferon Tipo I/metabolismo , Macrófagos/metabolismo , Nucleotidiltransferases/genética
6.
J Environ Manage ; 339: 117880, 2023 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-37080098

RESUMO

Biological lability of dissolved organic matter (DOM) is a crucial indicator of carbon cycle and contaminant attenuation in freshwater lakes. In this study, we employed a multi-stage plug-flow bioreactor and spectrofluorometric indices to characterize the seasonal variations in DOM composition and lability across Poyang Lake (PY) and Lake Taihu (TH), two large freshwater lakes in China with distinct hydrological seasonality. Our findings showed that the export of floodplain-derived organics and river-lake interaction led to a remarkable increase in terrestrial aromatic and humic-like DOM with high molecular weights and long turnover times in PY. Consequently, the labile fraction was extremely low (average LDOC% of 3%) during the rising-to-flood season (spring and summer). Conversely, autochthonous production in TH considerably enriched semi-labile (average SDOC% of 26%) and biodegradable DOM (average BDOC% of 34%) during the phytoplankton bloom to post-bloom season (summer and autumn). This was reflected by the accumulation of low-light-absorbing and protein-like components with high biological and fluorescence indices. In the dry and non-bloom season (winter), the better preservation of humic substances maintained the high molecular weight and humic degree of DOM in PY, while the decay of aquatic plants strengthened autochthonous production, resulting in a similar BDOC% of PY samples (23%-34%) to TH samples (18%-33%). We further applied partial least squares regression using DOM optical indices as predictive proxies, which generated a greater prediction strength for BDOC% (R2 = 0.80) compared to SDOC% (R2 = 0.57) and LDOC% (R2 = 0.28). The regression model identified aromaticity (SUVA254) as the most effective and negative predictor and low molecular weight (A250/A365) as the highly and positively influential factor. Our study provides new evidence that the seasonality of DOM lability profiles is regulated by the trade-off between flow-related variation and phytoplankton production, and presents an approach to describe and predict DOM lability across freshwater lakes.


Assuntos
Matéria Orgânica Dissolvida , Lagos , Estações do Ano , Rios , China , Espectrometria de Fluorescência
7.
mSystems ; 8(2): e0073822, 2023 04 27.
Artigo em Inglês | MEDLINE | ID: mdl-36971593

RESUMO

PMA (propidium monoazide) is one of the few methods that are compatible with metagenomic sequencing to characterize the live/intact microbiota. However, its efficiency in complex communities such as saliva and feces is still controversial. An effective method for depleting host and dead bacterial DNA in human microbiome samples is lacking. Here, we systematically evaluate the efficiency of osmotic lysis and PMAxx treatment (lyPMAxx) in characterizing the viable microbiome with four live/dead Gram+/Gram- microbial strains in simple synthetic and spiked-in complex communities. We show that lyPMAxx-quantitative PCR (qPCR)/sequencing eliminated more than 95% of the host and heat-killed microbial DNA and had a much smaller effect on the live microbes in both simple mock and spiked-in complex communities. The overall microbial load and the alpha diversity of the salivary and fecal microbiome were decreased by lyPMAxx, and the relative abundances of the microbes were changed. The relative abundances of Actinobacteria, Fusobacteria, and Firmicutes in saliva were decreased by lyPMAxx, as was that of Firmicutes in feces. We also found that the frequently used sample storage method, freezing with glycerol, killed or injured 65% and 94% of the living microbial cells in saliva and feces, respectively, with the Proteobacteria phylum affected most in saliva and the Bacteroidetes and Firmicutes phyla affected most in feces. By comparing the absolute abundance variation of the shared species among different sample types and individuals, we found that sample habitat and personal differences affected the response of microbial species to lyPMAxx and freezing. IMPORTANCE The functions and phenotypes of microbial communities are largely defined by viable microbes. Through advanced nucleic acid sequencing technologies and downstream bioinformatic analyses, we gained an insight into the high-resolution microbial community composition of human saliva and feces, yet we know very little about whether such community DNA sequences represent viable microbes. PMA-qPCR was used to characterize the viable microbes in previous studies. However, its efficiency in complex communities such as saliva and feces is still controversial. By spiking-in four live/dead Gram+/Gram- bacterial strains, we demonstrate that lyPMAxx can effectively discriminate between live and dead microbes in the simple synthetic community and complex human microbial communities (saliva and feces). In addition, freezing storage was found to kill or injure the microbes in saliva and feces significantly, as measured with lyPMAxx-qPCR/sequencing. This method has a promising prospect in the viable/intact microbiota detection of complex human microbial communities.


Assuntos
Microbiota , Humanos , Microbiota/genética , DNA , Fezes/microbiologia , DNA Bacteriano/genética , Bactérias/genética , Firmicutes/genética
8.
PeerJ ; 10: e14394, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36415861

RESUMO

Context: Scutellaria baicalensis Georgi (SBG) may relieve bone cancer pain (BCP) by regulating cell proliferation, angiogenesis, and apoptosis. Objective: The mechanism of SBG in the treatment of BCP remains to be further explored. Methods: The active compounds and targets of SBG were obtained from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TCMSP) and SwissTargetPrediction databases. BCP-related targets were screened from NCBI and GeneCards databases. Additionally, Cytoscape software was applied to construct network diagrams, and OmicShare platform was used to enrich Gene Ontology (GO) and pathways. Finally, the verification of active compounds and core targets was performed based on quantitative real-time PCR (qRT-PCR). Results: Interestingly, we identified baicalein and wogonin as the main active components of SBG. A total of 41 SBG targets, including VEGFA, IL6, MAPK3, JUN and TNF, were obtained in the treatment of BCP. In addition, pathways in cancer may be an essential way of SBG in the treatment of BCP. Experimental verification had shown that baicalein and wogonin were significantly related to BCP core targets. Conclusions: The active components of SBG have been clarified, and the mechanism of the active components in treating BCP has been predicted and verified, which provides an experimental and theoretical basis for the in-depth elucidation of the pharmacodynamics material basis and mechanism of SBG.


Assuntos
Dor do Câncer , Neoplasias , Scutellaria baicalensis , Farmacologia em Rede , Medicina Tradicional Chinesa
9.
Front Pharmacol ; 13: 995777, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36176434

RESUMO

Lagotis brachystachya Maxim, a common herb in Tibetan medicine, is mainly used to treat pneumonia, hepatitis, yellow water disease (gouty arthritis). Since long-term heavy drinking is also a risk factor for gouty arthritis, the present study aimed to evaluate the underlying protective role and mechanism of extracts of Lagotis brachystachya (ELB) in chronic alcoholic liver injury combined with gouty arthritis. The rat chronic alcoholic liver injury combined with gouty arthritis model was established by long-term alcohol consumption and monosodium urate (MSU) injection. The therapeutical action of ELB was then evaluated by biochemical measurement, histopathological examination, ankle swelling assessment, and protein detection. According to biochemical measurements and histopathological evaluation, ELB could alleviate the symptoms of alcoholic liver injury combined with gouty arthritis. In addition, chronic alcohol consumption and MSU activated inflammatory-related signaling such as TLR4/MyD88/NF-κB, NLRP3, and JAK2/STAT3 pathways in the liver and synovial tissues, while ELB significantly inhibited the activation of the inflammatory signaling pathway. In conclusion, ELB is protective in rats with chronic alcoholic liver injury and gouty arthritis, possibly mediated by the inhibition of TLR4/MyD88/NF-κB, NLRP3, and JAK2-STAT3 signaling pathways in both the hepatic and synovial tissues.

10.
J Inflamm Res ; 14: 5999-6010, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34815689

RESUMO

INTRODUCTION: Bone cancer pain is characterized by persistent pain, usually requiring drugs to relieve pain. Baicalin, a flavonoid compound extracted from Scutellaria baicalensis, which has antioxidant and analgesic effects. But, the effect of baicalin on bone cancer pain is unclear. Thus, this study aimed to explore the mechanism of baicalin on SD rats with bone cancer pain. MATERIALS AND METHODS: The MADB-106 breast cancer cells-induced bone pain model was constructed and carried out baicalin treatment. The therapeutic effect of baicalin on bone cancer pain model was observed by hematoxylin-eosin staining and immunofluorescence staining. We also performed transcriptome sequencing analysis of baicalin in the treatment of bone metastases. Also, RT-qPCR and ELISA were used to detect the expression levels of inflammation factors. RESULTS: After baicalin treatment, osteoclast activation was inhibited and the number of bone trabeculae was increased. Baicalin inhibited the protein expression level of inflammatory factors (IL-1ß, IL-6, TNF-α and PGE2) in the bone metastases group. Based on the transcriptome sequencing of the bone metastases group and the baicalin treatment group, baicalin inhibited the expression of ALPP, DUSP1, CYR61, ALPPL2, SPP1 and TLR4. RT-qPCR was also used to validate the expression levels of these cytokine genes. CONCLUSION: Baicalin had a certain inhibitory effect on the SD rat model of bone metastasis cancer. These insights can guide future research on the molecular mechanism of bone cancer pain and provide a theoretical basis for baicalin in the treatment of bone pain caused by breast cancer in the future.

11.
Inflammopharmacology ; 29(4): 1187-1200, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34244900

RESUMO

Lagotis brachystachya Maxim is a herb widely used in traditional Tibetan medicine. Our previous study indicated that total extracts from Lagotis brachystachya could lower uric acid levels. This study aimed to further elucidate the active components (luteolin, luteoloside and apigenin) isolated from Lagotis brachystachya and the underlying mechanism in vitro and in vivo. The results showed that treatment with luteolin and luteoloside reversed the reduction of organic anion transporter 1 (OAT1) levels, while apigenin attenuated the elevation of urate transporter 1 (URAT1) and glucose transporter 9 (GLUT9) levels in uric acid-treated HK-2 cells, which was consistent with the finding in the kidneys of potassium oxonate (PO)-induced mice. On the other hand, hepatic xanthine oxidase activity was inhibited by the components. In addition, all of these active components improved the morphology of the kidney in hyperuricemic mice. Moreover, molecular docking showed that luteolin, luteoloside and apigenin could bind Toll-like receptor 4 (TLR4) and NLR family pyrin domain containing 3 (NLRP3). Congruently, western blot analysis showed that the components inhibited TLR4/myeloid differentiation primary response 88 (MyD88)/NLRP3 signaling. In conclusion, these results indicated that luteolin, luteoloside and apigenin could attenuate hyperuricemia by decreasing the production and increasing the excretion of uric acid, which were mediated by inhibiting inflammatory signaling pathways.


Assuntos
Medicamentos de Ervas Chinesas/farmacologia , Hiperuricemia/metabolismo , Rim/metabolismo , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Receptor 4 Toll-Like/metabolismo , Ácido Úrico/metabolismo , Animais , Relação Dose-Resposta a Droga , Medicamentos de Ervas Chinesas/isolamento & purificação , Medicamentos de Ervas Chinesas/uso terapêutico , Homeostase/efeitos dos fármacos , Homeostase/fisiologia , Hiperuricemia/tratamento farmacológico , Rim/efeitos dos fármacos , Masculino , Camundongos , Proteína 3 que Contém Domínio de Pirina da Família NLR/antagonistas & inibidores , Plantas Medicinais , Estrutura Secundária de Proteína , Transdução de Sinais/efeitos dos fármacos , Transdução de Sinais/fisiologia , Receptor 4 Toll-Like/antagonistas & inibidores , Ácido Úrico/toxicidade
12.
Molecules ; 26(6)2021 Mar 11.
Artigo em Inglês | MEDLINE | ID: mdl-33799697

RESUMO

Lithium metal batteries have achieved large-scale application, but still have limitations such as poor safety performance and high cost, and limited lithium resources limit the production of lithium batteries. The construction of these devices is also hampered by limited lithium supplies. Therefore, it is particularly important to find alternative metals for lithium replacement. Sodium has the properties of rich in content, low cost and ability to provide high voltage, which makes it an ideal substitute for lithium. Sulfur-based materials have attributes of high energy density, high theoretical specific capacity and are easily oxidized. They may be used as cathodes matched with sodium anodes to form a sodium-sulfur battery. Traditional sodium-sulfur batteries are used at a temperature of about 300 °C. In order to solve problems associated with flammability, explosiveness and energy loss caused by high-temperature use conditions, most research is now focused on the development of room temperature sodium-sulfur batteries. Regardless of safety performance or energy storage performance, room temperature sodium-sulfur batteries have great potential as next-generation secondary batteries. This article summarizes the working principle and existing problems for room temperature sodium-sulfur battery, and summarizes the methods necessary to solve key scientific problems to improve the comprehensive energy storage performance of sodium-sulfur battery from four aspects: cathode, anode, electrolyte and separator.

13.
Sci Rep ; 11(1): 1544, 2021 01 15.
Artigo em Inglês | MEDLINE | ID: mdl-33452372

RESUMO

Soil microbe is crucial to a healthy soil, therefore its diversities and abundances under different conditions are still need fully understand.The aims of the study were to characterize the community structure and diversity of microbe in the rhizosphere soil after continuous maize seed production, and the relationship between the disease incidence of four diseases and the variation of the rhizosphere microbe. The results showed that different fungal and bacterial species were predominant in different cropping year, and long-term maize seed production had a huge impact on structure and diversity of soil microbial. Ascomycota and Mortierellomycota were the dominant fungal phyla and Mortierella and Ascomycetes represented for a large proportion of genus. A relative increase of Fusarium and Gibberella and a relative decrease of Mortierella, Chrysosporium, Podospora, and Chaetomium were observed with the increase of cropping year. Pathogenic Fusarium, Curvularia, Curvularia-lunata, Cladosporium, Gibberella-baccata, and Plectosphaerellaceae were over-presented and varied at different continuous cropping year, led to different maize disease incidence. Proteobacteria and Actinobacteria ranked in the top two of all bacterial phyla, and genus Pseudarthrobacter, Roseiflexus and RB41 dominated top 3. Haliangium and Streptomyces decreased with the continuous cropping year and mono-cropping of maize seed production increased disease incidence with the increase of cropping year, while the major disease was different. Continuous cropping of maize seed production induced the decrease of protective microbe and biocontrol genera, while pathogenic pathogen increased, and maize are in danger of pathogen invasion. Field management show great effects on soil microbial community.


Assuntos
Rizosfera , Sementes/microbiologia , Zea mays/microbiologia , Agricultura/métodos , Bactérias/classificação , Biodiversidade , Microbiota/fisiologia , Doenças das Plantas/microbiologia , Raízes de Plantas/microbiologia , Sementes/crescimento & desenvolvimento , Solo/química , Microbiologia do Solo , Zea mays/crescimento & desenvolvimento
14.
Transl Stroke Res ; 12(6): 1035-1044, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-33492652

RESUMO

Intracerebral hemorrhage (ICH) is the most common form of hemorrhagic stroke with high morbidity and mortality. Rapid and massive bleeding may compress the brain tissue, causing space-occupying and pathological effects, such as reduced local cerebral blood flow, acidosis, and inflammatory and immune responses. Although the development of minimally invasive technique provides a new option for the treatment of ICH, their application is limited due to the difficulty in achieving accurate puncture localization under the guidance of the marks on CT. We selected 30 patients treated with neuroendoscopic surgery guided by 3D-printed navigation technology (experimental group) and 30 patients treated with neuroendoscopic surgery guided by hand-painted on the patient's body surface according to the marks on CT (control group). Our results showed that patients in the experimental group had a lower number of intraoperative punctures, shorter operation time, less intraoperative blood loss, higher hematoma clearance rate, and smaller volume of perihematomal edema than the patients in the control group. Moreover, patients in the experimental group had higher Glasgow Coma Scale score at discharge, shorter postoperative hospitalization time and ICU stay, and a lower rate of postoperative complications, despite the lack of statistically significant differences. In addition, no statistically significant differences were observed in mortality and Glasgow Outcome Scale score between the two groups. In conclusion, 3D-printed navigation technology used for the neuroendoscopic hematoma removal is a more reliable and less invasive approach in the treatment of ICH. This technique has great application prospects and deserves promotion in the future clinical practice.


Assuntos
Neuroendoscopia , Hemorragia Cerebral/complicações , Hemorragia Cerebral/diagnóstico por imagem , Hemorragia Cerebral/cirurgia , Hematoma/etiologia , Hematoma/cirurgia , Humanos , Impressão Tridimensional , Tecnologia , Resultado do Tratamento
15.
Mol Neurobiol ; 58(3): 1006-1016, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33078370

RESUMO

Long non-coding RNA (lncRNA) metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) has been shown to play a critical role in the development of several malignancies. However, the potential molecular mechanism of MALAT1 in glioma remains unclear. In the present study, we found that the expression of MALAT1 was aberrantly increased in both human glioma tissues and cells and associated with poor prognosis in glioma patients. We further found that MALAT1 silencing significantly inhibited glioma cell proliferation while induced cell cycle arrest and apoptosis. In parallel, knockdown of MALAT1 decreased tumor volume in vivo. These results suggested that MALAT1 acts as a functional oncogene, resulting in the oncogenicity in glioma. Nevertheless, the tumor-suppressive effect of MALAT1 silencing was reversed by miR-124. Besides, the relevance of ZEB2 in tumor progression has been studied in several forms of human cancer, and ZEB2 was identified as a target of miR-124 and negatively regulated by miR-124. MALAT1 overexpression or miR-124 inhibitor led to increased expression of ZEB2. In summary, our study depicts a novel pathway of MALAT1/miR-124/ZEB2 that regulates the progression of glioma and might provide a promising strategy for glioma therapy.


Assuntos
Neoplasias Encefálicas/genética , Progressão da Doença , Glioma/genética , Glioma/patologia , MicroRNAs/metabolismo , RNA Longo não Codificante/metabolismo , Regulação para Cima/genética , Homeobox 2 de Ligação a E-box com Dedos de Zinco/genética , Animais , Apoptose/genética , Sequência de Bases , Neoplasias Encefálicas/patologia , Carcinogênese/genética , Carcinogênese/patologia , Pontos de Checagem do Ciclo Celular/genética , Linhagem Celular Tumoral , Proliferação de Células/genética , Regulação para Baixo/genética , Regulação Neoplásica da Expressão Gênica , Humanos , Camundongos Endogâmicos BALB C , Camundongos Nus , MicroRNAs/genética , Prognóstico , RNA Longo não Codificante/genética , Homeobox 2 de Ligação a E-box com Dedos de Zinco/metabolismo
16.
J Neurooncol ; 148(3): 481-488, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32529449

RESUMO

INTRODUCTION: The incidence of meningiomas among the elderly is considered to be high, and are at increased risk of severe morbidity and mortality following surgery due to their aging physiology and unexpected comorbidities. This study aimed to evaluate the optimal management strategies of meningiomas in elderly patients. METHODS: We retrospectively analyzed 150 patients with incidental large (≥ 3 cm) and giant (≥ 6 cm) anterior skull base meningiomas from 2009 to 2018. These patients were divided into elderly group (≥ 65 years, n = 70) and younger group (< 65 years, n = 80). Information of patients with regard to their medical records, operative details, relevant imaging, and follow-up data were obtained from their respective electronic medical records. RESULTS: The elderly patients had significantly longer length of hospital stay (15.9 ± 3.5) compared to younger patients (13.6 ± 3.6, P < 0.001). Karnofsky Performance Scale (KPS) at discharge was significantly lower in elderly group when compared to younger group (P = 0.04). However, the KPS at 1-year after surgery was similar between the two groups. In addition, there was no significant difference in the incidence of surgical complications between the two groups. Multivariate regression analysis of postoperative complications revealed blood loss ≥ 800 mL (P = 0.007) and BMI (< 18.5 or ≥ 24, P < 0.001) as risk factors, rather than age. CONCLUSIONS: Surgical resection in elderly patients with incidental anterior skull base large and giant meningiomas is considered to be a safe and effective therapeutic option owing to acceptable mortality, postoperative complications and postoperative clinical outcomes.


Assuntos
Neoplasias Meníngeas/cirurgia , Meningioma/cirurgia , Procedimentos Neurocirúrgicos/métodos , Neoplasias da Base do Crânio/cirurgia , Idoso , Envelhecimento , China/epidemiologia , Gerenciamento Clínico , Feminino , Seguimentos , Humanos , Incidência , Tempo de Internação , Masculino , Neoplasias Meníngeas/epidemiologia , Neoplasias Meníngeas/patologia , Meningioma/epidemiologia , Meningioma/patologia , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos , Fatores de Risco , Neoplasias da Base do Crânio/epidemiologia , Neoplasias da Base do Crânio/patologia
17.
Cancer Biother Radiopharm ; 35(8): 596-604, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32354225

RESUMO

Background: Melanoma, belonging to a kind of skin cancer, takes a big part in cancer-associated deaths globally. Abundant documents have recorded the crucial roles of long noncoding RNA (lncRNA) in the initiation and development of tumors. lncRNA forkhead box D3 antisense RNA 1 (FOXD3-AS1) has been commonly identified as a key regulator in the progression of multiple cancers; however, the way it exerts function remains obscure in melanoma. Materials and Methods: FOXD3-AS1 expression was examined by RT-qPCR. The role of FOXD3-AS1 in melanoma was determined by 5-ethynyl-2'-deoxyuridine (EdU), transwell, and Western blot assays. The combination between microRNA-127-3p and FOXD3-AS1 (or four jointed box 1 [FJX1]) was confirmed by luciferase reporter and RNA immunoprecipitation assays. Results: FOXD3-AS1 was markedly upregulated in melanoma cells. It was validated by loss-of-function assays that cell proliferation and migration were inhibited by FOXD3-AS1 deficiency, while cell apoptosis was facilitated by FOXD3-AS1 knockdown in melanoma. Mechanistic exploration testified that miR-127-3p could bind to FOXD3-AS1 and its expression was negatively modulated by FOXD3-AS1 in melanoma. Besides, overexpression of miR-127-3p repressed melanoma progression. Moreover, miR-127-3p was certified to negatively regulate the expression of the FJX1, and miR-127-3p could combine with FJX1 in melanoma cells. Rescue assays depicted that FJX1 overexpression countervailed FOXD3-AS1 silencing-mediated inhibition on melanoma progression. Conclusions: Overall, FOXD3-AS1 contributes to the progression of melanoma via miR-127-3p/FJX1 axis.


Assuntos
Peptídeos e Proteínas de Sinalização Intercelular/genética , Melanoma/genética , MicroRNAs/metabolismo , RNA Longo não Codificante/metabolismo , Neoplasias Cutâneas/genética , Apoptose/genética , Linhagem Celular Tumoral , Movimento Celular/efeitos dos fármacos , Movimento Celular/genética , Proliferação de Células/efeitos dos fármacos , Proliferação de Células/genética , Progressão da Doença , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Técnicas de Silenciamento de Genes , Humanos , Melanoma/patologia , MicroRNAs/agonistas , RNA Longo não Codificante/genética
18.
Sci Rep ; 10(1): 5196, 2020 03 23.
Artigo em Inglês | MEDLINE | ID: mdl-32251343

RESUMO

The purpose of this study was to investigate the effectiveness and practicality of 3D-printed model-guided endoscopic surgery for the treatment of basal ganglia hemorrhage. The authors retrospectively analyzed the data of all patients who underwent endoscopic evacuation of basal ganglia hemorrhage in the Department of Neurosurgery at Dalang Hospital and Shipai Hospital between December 2017 and February 2019. Twelve patients, in whom the 3D-printed model guidance was used for endoscopic evacuation, were included in this investigation. Using 3D reconstructed technology, we designed the appropriate surgical approach. Then, an individualized facial model with the guide orifice was printed by a 3D printer. Further, the 3D-printed model was employed to guide the insertion of the endoscope sheath. As a result, the average evacuation rate was 97.2% (range 90.1-100.0%). The GCS and mRS score were improved in each patient from admission to discharge examination. All patients had a good prognosis based on their functional independence measure (FIM) scores at the 6-month follow-up. The 3D-printed model-guided endoscopic evacuation was effective and safe for basal ganglia hemorrhage. This technique deserves further investigation to determine its role in intracerebral hemorrhage management.


Assuntos
Hemorragia dos Gânglios da Base/cirurgia , Endoscopia/métodos , Modelos Anatômicos , Procedimentos Neurocirúrgicos/métodos , Impressão Tridimensional , Adulto , Idoso , Hemorragia dos Gânglios da Base/diagnóstico por imagem , Perda Sanguínea Cirúrgica , Feminino , Seguimentos , Escala de Coma de Glasgow , Humanos , Masculino , Pessoa de Meia-Idade , Neuroimagem , Duração da Cirurgia , Prognóstico , Estudos Retrospectivos , Tomografia Computadorizada por Raios X
19.
Chem Commun (Camb) ; 56(5): 778-781, 2020 Jan 16.
Artigo em Inglês | MEDLINE | ID: mdl-31845678

RESUMO

Hard carbon materials are considered as the most promising anode for sodium-ion batteries (SIBs). However, the high cost and poor rate performance hinder their application in SIBs. Moreover, the controversial mechanism of Na-ion storage restricts the improvement of hard carbon anodes. Herein, hard carbon micro-nano tubes (HCMNTs) from low-cost biomass kapok fibers are prepared as a promising anode for SIBs. Benefitting from the micro-nano structure, which offers low surface area and short Na+ diffusion path, 1400HCMNT possesses a good initial Coulombic efficiency of 80%, a high reversible capacity of 290 mA h g-1, and an excellent rate capacity. Furthermore, electron paramagnetic resonance and thermogravimetric analysis were applied to investigate the Na-ion storage mechanism in the HCMNTs. Sodium is stored in the hard carbon in an ionic state in the slope region and as quasi-liquid metallic sodium clusters in the low-voltage plateau.

20.
Microorganisms ; 7(12)2019 Nov 20.
Artigo em Inglês | MEDLINE | ID: mdl-31756956

RESUMO

The intestinal tract of vertebrates is normally colonized with a remarkable number of commensal microorganisms that are collectively referred to as gut microbiota. Gut microbiota has been demonstrated to interact with immune cells and to modulate specific signaling pathways involving both innate and adaptive immune processes. Accumulated evidence suggests that the imbalance of Th17 and Treg cells is associated with the development of many diseases. Herein, we emphatically present recent findings to show how specific gut microbiota organisms and metabolites shape the balance of Th17 and Treg cells. We also discuss the therapeutic potential of fecal microbiota transplantation (FMT) in diseases caused by the imbalance of Th17 and Treg cells.

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