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1.
Plant J ; 113(4): 772-786, 2023 02.
Artículo en Inglés | MEDLINE | ID: mdl-36575587

RESUMEN

Propagation through stem cuttings is a popular method worldwide for species such as fruit tree rootstocks and forest trees. Adventitious root (AR) formation from stem cuttings is crucial for effective and successful clonal propagation of apple rootstocks. Strigolactones (SLs) are newly identified hormones involved in AR formation. However, the regulatory mechanisms underpinning this process remain elusive. In the present study, weighted gene co-expression network analysis, as well as rooting assays using stable transgenic apple materials, revealed that MdBRC1 served as a key gene in the inhibition of AR formation by SLs. We have demonstrated that MdSMXL7 and MdWRKY6 synergistically regulated MdBRC1 expression, depending on the interactions of MdSMXL7 and MdWRKY6 at the protein level downstream of SLs as well as the direct promoter binding on MdBRC1 by MdWRKY6. Furthermore, biochemical studies and genetic analysis revealed that MdBRC1 inhibited AR formation by triggering the expression of MdGH3.1 in a transcriptional activation pathway. Finally, the present study not only proposes a component, MdWRKY6, that enables MdSMXL7 to regulate MdBRC1 during the process of SL-controlled AR formation in apple, but also provides prospective target genes to enhance AR formation capacity using CRISPR (i.e. clustered regularly interspaced short palindromic repeats) technology, particularly in woody plants.


Asunto(s)
Malus , Reguladores del Crecimiento de las Plantas , Reguladores del Crecimiento de las Plantas/metabolismo , Ácidos Indolacéticos/metabolismo , Malus/metabolismo , Raíces de Plantas/metabolismo , Regulación de la Expresión Génica de las Plantas/genética
2.
Cytokine ; 182: 156717, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39067394

RESUMEN

PURPOSE: Aspergillus fumigatus (A. fumigatus) keratitis is a type of infectious corneal disease that significantly impairs vision. The objective of this study is to evaluate the therapeutic potential of chelerythrine (CHE) on A. fumigatus keratitis. METHODS: The antifungal activity of CHE was assessed through various tests including the minimum inhibitory concentration test, scanning electron microscopy, transmission electron microscopy, propidium iodide uptake test and plate count. Neutrophil infiltration and activity were assessed using immunofluorescence staining and the myeloperoxidase test. RT-PCR, western blotting assay, and ELISA were performed to measure the expression levels of proinflammatory cytokines (IL-1ß and IL-6), NF-E2-related factor (Nrf2), heme oxygenase-1 (HO-1), and lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1), as well as to determine the ratio of phosphorylated-p38 (p-p38) mitogen-activated protein kinase (MAPK) to p38 MAPK. RESULTS: In vitro, CHE inhibited the growth of A. fumigatus conidia, reduced fungal hyphae survival, and prevented fungal biofilm formation. In vivo, CHE reduced the severity of A. fumigatus keratitis and exhibited an excellent anti-inflammatory effect by blocking neutrophil infiltration. Furthermore, CHE decreased the expression levels of proinflammatory cytokines and LOX-1 at both mRNA and protein levels, while also decreasing the p-p38 MAPK/p38 MAPK ratio. Additionally, CHE increased the expression levels of Nrf2 and HO-1. CONCLUSION: CHE provides protection against A. fumigatus keratitis through multiple mechanisms, including reducing fungal survival, inducing anti-inflammatory effects, enhancing Nrf2 and HO-1 expression, and suppressing the signaling pathway of LOX-1/p38 MAPK.


Asunto(s)
Aspergilosis , Aspergillus fumigatus , Benzofenantridinas , Queratitis , Factor 2 Relacionado con NF-E2 , Receptores Depuradores de Clase E , Proteínas Quinasas p38 Activadas por Mitógenos , Aspergillus fumigatus/efectos de los fármacos , Receptores Depuradores de Clase E/metabolismo , Proteínas Quinasas p38 Activadas por Mitógenos/metabolismo , Queratitis/microbiología , Queratitis/tratamiento farmacológico , Queratitis/metabolismo , Animales , Benzofenantridinas/farmacología , Benzofenantridinas/uso terapéutico , Ratones , Factor 2 Relacionado con NF-E2/metabolismo , Aspergilosis/tratamiento farmacológico , Aspergilosis/microbiología , Hemo-Oxigenasa 1/metabolismo , Transducción de Señal/efectos de los fármacos , Sistema de Señalización de MAP Quinasas/efectos de los fármacos , Antifúngicos/farmacología , Antifúngicos/uso terapéutico , Femenino , Citocinas/metabolismo
3.
J Exp Bot ; 75(10): 2965-2981, 2024 May 20.
Artículo en Inglés | MEDLINE | ID: mdl-38452221

RESUMEN

Low temperatures affect flower development in rose (Rosa hybrida), increasing petaloid stamen number and reducing normal stamen number. We identified the low-temperature-responsive R2R3-MYB transcription factor RhMYB17, which is homologous to Arabidopsis MYB17 by similarity of protein sequences. RhMYB17 was up-regulated at low temperatures, and RhMYB17 transcripts accumulated in floral buds. Transient silencing of RhMYB17 by virus-induced gene silencing decreased petaloid stamen number and increased normal stamen number. According to the ABCDE model of floral organ identity, class A genes APETALA 1 (AP1) and AP2 contribute to sepal and petal formation. Transcription factor binding analysis identified RhMYB17 binding sites in the promoters of rose APETALA 2 (RhAP2) and APETALA 2-LIKE (RhAP2L). Yeast one-hybrid assays, dual-luciferase reporter assays, and electrophoretic mobility shift assays confirmed that RhMYB17 directly binds to the promoters of RhAP2 and RhAP2L, thereby activating their expression. RNA sequencing further demonstrated that RhMYB17 plays a pivotal role in regulating the expression of class A genes, and indirectly influences the expression of the class C gene. This study reveals a novel mechanism for the homeotic transformation of floral organs in response to low temperatures.


Asunto(s)
Flores , Regulación de la Expresión Génica de las Plantas , Proteínas de Plantas , Rosa , Factores de Transcripción , Rosa/genética , Rosa/metabolismo , Rosa/crecimiento & desarrollo , Rosa/fisiología , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo , Flores/crecimiento & desarrollo , Flores/genética , Flores/metabolismo , Factores de Transcripción/metabolismo , Factores de Transcripción/genética , Respuesta al Choque por Frío/genética , Frío
4.
Opt Lett ; 49(14): 3910-3913, 2024 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-39008739

RESUMEN

In order to reduce the power consumption of digital signal processing (DSP) in a coherent optical communication system, a low complexity equalization scheme in DSP flow of a 400 Gb/s DP-16QAM system has been proposed. This scheme is based on Fermat number transform (FNT), which sequentially performs static equalization (SE) and dynamic equalization (DE) in the transform domain. For different distances, the proposed scheme finds the optimal solution under the condition that transform length and data bit width are mutually restricted under different transmission distances while achieving low complexity and optimal performance. The experimental results show that the adopted transform-domain equalization (TrDE) scheme has much lower computational complexity than the traditional frequency-domain equalization (FDE) and time-domain equalization (TDE) nearly without any performance loss. In the 80, 160, and 240 km scenarios, the number of multiplier is reduced by more than 72%, and the advantage becomes more obvious as the transmission capacity increases.

5.
Opt Lett ; 49(11): 3166-3169, 2024 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-38824354

RESUMEN

To monitor the health of the fiber network and its ambient environment in densely populated access/metro network areas, in this Letter, an endogenous distributed acoustic sensing (DAS) has been proposed and achieved in a coherent digital subcarrier multiplexing (DSCM) system. Rather than specially allocating a sensing probe in general integrated communication and sensing schemes, the fractional Fourier transformed (FrFT) training sequence (TS) designated for time/frequency synchronization in DSCM coherent communications has been repurposed for sensing. While achieving excellent synchronization performance of communication, the FrFT-based TS can also be concurrently utilized to perform distributed vibration sensing. Experimental results demonstrate that the FrFT-based timing/frequency synchronization sequence is repurposed to achieve a DAS sensitivity of 70 p ε/Hz at a spatial resolution of 5 m, along with 100-Gb/s 16 quadrature amplitude modulation (QAM) DSCM transmission, without a loss of spectral efficiency.

6.
Phys Rev Lett ; 132(1): 014002, 2024 Jan 05.
Artículo en Inglés | MEDLINE | ID: mdl-38242657

RESUMEN

Multicomponent droplets are pertinent to diverse applications ranging from 3D printing to fabrication of electronic devices to medical diagnostics and are typically inherent with the occurrence of the phase transition in the manifestation of evaporation and solidification. Indeed, the versatile transformations and fascinating morphologies of the droplets have been identified, which primarily arise from the evaporation-induced flow. Here, we report the self-lifting behavior of a frozen binary droplet, resulting in a nearly doubling in height, in a fashion that defies against the gravitational effect. This counterintuitive observation is attributed to an internal solutal Marangoni flow up to 1 mm/s, which is driven by the enriched solute concentration locally in the vicinity of the solidification front. Moreover, we perform theoretical analysis by incorporating the propagation of solidification front, and the calculated spatiotemporal evolution of droplet shape agrees with experiments excellently. The effects of several key physical parameters on self-lifting are elucidated quantitatively, providing guidance to control the self-lifting. These results will further advance our understanding of underlying physicochemical hydrodynamics in the multicomponent liquid systems subjected to heat transfer and phase change, consequently shedding light on the relevant technological applications.

7.
Artículo en Inglés | MEDLINE | ID: mdl-38743898

RESUMEN

Objective: To explore and analyze the effect of targeted nursing combined with psychological intervention on chemotherapy for gastric carcinoma and its influence on patient compliance. Methods: The study subjects were 88 patients diagnosed with gastric cancer and treated with chemotherapy from December 2019 to May 2021. Results: The Self-Rating Anxiety Scale and Hamilton Depression Cale scores of the study group were significantly lower than those of the control group (33.45±6.11 vs. 44.17±5.76; 35.14±5.44 vs. 46.87±5.23, respectively; P < .05); In the Morisky scale, patients in the study group scored higher than those in the control group in terms of weight control, medication compliance, appropriate exercise, and diet control; the study group had more cases of Grade 0 nausea and vomiting and significantly fewer cases of Grades I, II, III, and IV nausea and vomiting than the control group compliance (P < .05); patients in the study group gave higher scores than those in the control group on the nursing care quality, from the aspects of the quality of nursing staff. These findings highlight the significant improvements in psychological well-being, adherence to health-related behaviors, reduced nausea and vomiting, and overall satisfaction with nursing care in patients receiving targeted nursing and psychological intervention. Conclusion: The utilization of targeted nursing in tandem with psychological counseling has demonstrated a notably positive impact on chemotherapy outcomes for stomach malignancy. The amalgamation of targeted nursing and psychological intervention not only enhances patient compliance during gastric carcinoma chemotherapy but also leads to a reduction in negative emotions, decreased instances of nausea and vomiting, and higher scores for nursing quality. These findings have significant implications for clinical practice, suggesting that the integration of targeted nursing and psychological support could be a valuable approach in optimizing patient care for gastric carcinoma. The observed improvements underscore the potential for widespread adoption of this combined intervention strategy in clinical settings, potentially leading to enhanced treatment outcomes and overall patient well-being.

8.
Ecotoxicol Environ Saf ; 282: 116724, 2024 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-39003870

RESUMEN

Benzovindiflupyr is a succinate dehydrogenase inhibitor fungicide that targets mitochondrial function for disease control. In this study, we investigated the adsorption-desorption and leaching behavior of benzovindiflupyr in eight soil types using the batch equilibrium method and the soil column leaching method. A Freundlich model (r2 > 0.9959) was used to better characterize the adsorption-desorption process in eight soil types, with adsorption coefficients (KF-ads) ranging from 2.303 to 17.886. KF-ads was significantly and positively correlated (p < 0.05) with the organic carbon content. High temperatures and increased initial pH of aqueous solutions led to a decrease in benzovindiflupyr adsorption in the soil. The adsorption was also influenced by factors such as ionic strength, humic acid, surfactant type, microplastic type, and particle size and concentration. Moreover, benzovindiflupyr exhibited low leachability in all four soils selected, but different leaching solutions affected the risk of benzovindiflupyr migration to groundwater. Overall, this study provides insights into the adsorption characteristics of benzovindiflupyr in different soils and provides key information for environmental risk assessment.


Asunto(s)
Fungicidas Industriales , Contaminantes del Suelo , Suelo , Adsorción , Contaminantes del Suelo/química , Suelo/química , Fungicidas Industriales/química , Concentración de Iones de Hidrógeno , Concentración Osmolar , Sustancias Húmicas , Tamaño de la Partícula , Contaminantes Químicos del Agua/química , Agua Subterránea/química
9.
Ecotoxicol Environ Saf ; 285: 117026, 2024 Sep 12.
Artículo en Inglés | MEDLINE | ID: mdl-39270478

RESUMEN

Utilizing infrared spectroscopy coupled with batch equilibrium methods, the adsorption and desorption characteristics of the novel Insecticide fluchlordiniliprole were assessed in four different soil types. It was found that fluchlordiniliprole's adsorption and desorption in these soils were consistent with the Freundlich isotherm, exhibiting adsorption capacities (KF-ads) ranging from 8.436 to 36.269. Temperature fluctuations, encompassing both high and low extremes, impaired the ability of soil to adsorb fluchlordiniliprole. In addition, adsorption dynamics were modulated by several other factors, including soil pH, ionic strength, amendments (e.g., biochar and humic substances), and the presence of various surfactants and microplastics. Although capable of leaching, fluchlordiniliprole exhibited weak mobility in most soils. Therefore, it appears that fluchlordiniliprole seems to pose a threat to surface soil and aquatic biota, but a minimal threat to groundwater. SYNOPSIS STATEMENT: This research examines the dynamics of fluchlordiniliprole in soil, an will aid in maintaining ecological safety and managing agricultural pesticides. The study's comprehensive analysis of adsorption, desorption, and soil migration patterns significantly contributes to our understanding of pesticide interactions with diverse soil types. The results of this study will enable the development of environmentally responsible agricultural practices.

10.
Ecotoxicol Environ Saf ; 272: 116066, 2024 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-38325269

RESUMEN

Microplastics (MPs) and pesticides are two categories contaminants with proposed negative impacts to aqueous ecosystems, and adsorption of pesticides on MPs may result in their long-range transport and compound combination effects. Florpyrauxifen-benzyl, a novel pyridine-2-carboxylate auxin herbicide has been widely used to control weeds in paddy field, but the insights of which are extremely limited. Therefore, adsorption and desorption behaviors of florpyrauxifen-benzyl on polyvinyl chloride (PVC), polyethylene (PE) and disposable face masks (DFMs) in five water environment were investigated. The impacts of various environmental factors on adsorption capacity were evaluated, as well as adsorption mechanisms. The results revealed significant variations in adsorption capacity of florpyrauxifen-benzyl on three MPs, with approximately order of DFMs > PE > PVC. The discrepancy can be attributed to differences in structural and physicochemical properties, as evidenced by various characterization analysis. The kinetics and isotherm of florpyrauxifen-benzyl on three MPs were suitable for different models, wherein physical force predominantly governed adsorption process. Thermodynamic analysis revealed that both high and low temperatures weakened PE and DFMs adsorption, whereas temperature exhibited negligible impact on PVC adsorption. The adsorption capacity was significantly influenced by most environmental factors, particularly pH, cations and coexisting herbicide. This study provides valuable insights into the fate of florpyrauxifen-benzyl in presence of MPs, suggesting that PVC, PE and DFMs can serve as carriers of florpyrauxifen-benzyl in aquatic environment.


Asunto(s)
Herbicidas , Plaguicidas , Contaminantes Químicos del Agua , Microplásticos/toxicidad , Microplásticos/química , Plásticos/química , Adsorción , Ecosistema , Agua , Polietileno/química , Plaguicidas/análisis , Herbicidas/análisis , Contaminantes Químicos del Agua/análisis
11.
Sex Health ; 212024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38538087

RESUMEN

Coronavirus disease 2019, which is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), remains an ongoing global public health challenge. This disease causes damage not only to the respiratory system, affecting the normal physiological function of the lungs, but also to other vital organs, such as the heart and testicles. Existing studies have shown that co-expression of angiotensin-converting enzyme 2 and transmembrane serine protease 2 is the main mechanism by which SARS-CoV-2 invades host cells. Angiotensin-converting enzyme 2-expressing cells are widespread in the corpus cavernosum, reproductive tract and testis of men, which has raised concerns. Furthermore, abnormal sex hormone levels and decreased semen parameters were observed in coronavirus disease 2019 patients. This study comprehensively assessed the effects of SARS-CoV-2 infection on the testis, semen parameters, sex hormone levels and erectile function, and discussed possible transmission routes during sexual intercourse and the effect of vaccination on male fertility.


Asunto(s)
COVID-19 , Humanos , Masculino , COVID-19/prevención & control , SARS-CoV-2 , Enzima Convertidora de Angiotensina 2 , Peptidil-Dipeptidasa A , Fertilidad , Hormonas Esteroides Gonadales , Vacunación
12.
J Environ Manage ; 366: 121902, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-39033626

RESUMEN

This paper introduces an energy transition model featuring a carbon-intensive manufacturer that adopts sustainable insurance, participates in a cap-and-trade scheme, and implements carbon capture and storage (CCS) transit, all aimed at achieving the net-zero carbon emission target. The model utilizes a down-and-out call (DOC) approach to evaluate the manufacturer's equity, considering the bankruptcy risk prior to maturity due to carbon intensity. The equity of the life insurer providing funds is assessed using a capped DOC method to address the capped credit risk from the manufacturer. The findings reveal that increased adoption of CCS transit diminishes manufacturer equity, heightens default risk, and reduces insurer equity, with these effects exacerbated by advanced CCS technology and stringent cap-and-trade caps. Both stringent cap-and-trade schemes and rapid advancements in CCS transit practices, particularly with the use of advanced CCS technology, deviate from the net-zero target. A critical policy implication is the necessity for the precise calibration of cap-and-trade schemes and the pace of CCS transit adoption to ensure alignment with net-zero targets.


Asunto(s)
Carbono , Carbono/química , Secuestro de Carbono
13.
Molecules ; 29(9)2024 May 03.
Artículo en Inglés | MEDLINE | ID: mdl-38731608

RESUMEN

In this paper, Cu-BTC derived mesoporous CuS nanomaterial (m-CuS) was synthesized via a two-step process involving carbonization and sulfidation of Cu-BTC for colorimetric glutathione detection. The Cu-BTC was constructed by 1,3,5-benzenetri-carboxylic acid (H3BTC) and Cu2+ ions. The obtained m-CuS showed a large specific surface area (55.751 m2/g), pore volume (0.153 cm3/g), and pore diameter (15.380 nm). In addition, the synthesized m-CuS exhibited high peroxidase-like activity and could catalyze oxidation of the colorless substrate 3,3',5,5'-tetramethylbenzidine to a blue product. Peroxidase-like activity mechanism studies using terephthalic acid as a fluorescent probe proved that m-CuS assists H2O2 decomposition to reactive oxygen species, which are responsible for TMB oxidation. However, the catalytic activity of m-CuS for the oxidation of TMB by H2O2 could be potently inhibited in the presence of glutathione. Based on this phenomenon, the colorimetric detection of glutathione was demonstrated with good selectivity and high sensitivity. The linear range was 1-20 µM and 20-300 µM with a detection limit of 0.1 µM. The m-CuS showing good stability and robust peroxidase catalytic activity was applied for the detection of glutathione in human urine samples.


Asunto(s)
Colorimetría , Cobre , Glutatión , Peróxido de Hidrógeno , Nanoestructuras , Glutatión/análisis , Glutatión/química , Colorimetría/métodos , Cobre/química , Nanoestructuras/química , Catálisis , Peróxido de Hidrógeno/química , Peróxido de Hidrógeno/análisis , Porosidad , Oxidación-Reducción , Ácidos Ftálicos/química , Humanos , Bencidinas/química , Límite de Detección
14.
World J Microbiol Biotechnol ; 40(4): 109, 2024 Feb 27.
Artículo en Inglés | MEDLINE | ID: mdl-38411737

RESUMEN

Biomass from agriculture, forestry, and urban wastes is a potential renewable organic resource for energy generation. Many investigations have demonstrated that anaerobic fungi and methanogens could be co-cultured to degrade lignocellulose for methane generation. Thus, this study aimed to evaluate the effect of natural anaerobic fungi-methanogens co-culture on the methane production and lignocellulosic degradation of wastes from rice, corn and sugarcane. Hu sheep rumen digesta was used to develop a natural anaerobic fungi-methanogen co-culture. The substrates were rice straw (RS), rich husk (RH), corn stover (CS), corn cobs (CC), and sugarcane baggage (SB). Production of total gas and methane, metabolization rate of reducing sugar, glucose, and xylose, digestibility of hemicellulose and cellulose, activity of carboxymethylcellulase and xylanase, and concentrations of total acid and acetate were highest (P < 0.05) in CC, moderate (P < 0.05) in RS and CS, and lowest (P < 0.05) in SB and RH. The pH, lactate and ethanol were lowest (P < 0.05) in CC, moderate (P < 0.05) in RS and CS, and lowest (P < 0.05) SB and RH. Formate was lowest (P < 0.05) in CC, RS and CS, moderate (P < 0.05) in SB, and lowest (P < 0.05) in RH. Therefore, this study indicated that the potential of methane production and lignocellulosic degradation by natural anaerobic fungi-methanogens co-culture were highest in CC, moderate in RS and CS, and lowest in SB and RH.


Asunto(s)
Euryarchaeota , Lignina , Oryza , Saccharum , Animales , Ovinos , Zea mays , Anaerobiosis , Técnicas de Cocultivo , Hongos
15.
J Am Chem Soc ; 145(19): 10576-10583, 2023 May 17.
Artículo en Inglés | MEDLINE | ID: mdl-37130260

RESUMEN

Li and Na metals with high energy density are promising in application in rechargeable batteries but suffer from degradation in the ambient atmosphere. The phenomenon that in terms of kinetics, Li is stable but Na is unstable in dry air has not been fully understood. Here, we use in situ environmental transmission electron microscopy combined with theoretical simulations and reveal that the different stabilities in dry air for Li and Na are reflected by the formation of compact Li2O layers on Li metal, while porous and rough Na2O/Na2O2 layers on Na metal are a consequence of the different thermodynamic and kinetics in O2. It is shown that a preformed carbonate layer can change the kinetics of Na toward an anticorrosive behavior. Our study provides a deeper understanding of the often-overlooked chemical reactions with environmental gases and enhances the electrochemical performance of Li and Na by controlling interfacial stability.

16.
Mol Carcinog ; 62(12): 1974-1989, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37792308

RESUMEN

Testis expression 10 (Tex10) is reported to be associated with tumorigenesis in several types of cancer types, but its role in hepatocellular carcinoma (HCC) metastasis has not been investigated. In this study, the expression of Tex10 in the HCC cell line and tissue microarray was determined by Western blot and immunohistochemistry (IHC), respectively. RNA sequencing-based transcriptome analysis was performed to identify the Tex10-mediated biological process. Cell Counting Kit-8, colony formation, transwell assays, xenograft tumor growth, and lung metastasis experiments in nude mice were applied to assess the effects of Tex10 on cell proliferation, migration, invasion, and metastasis. The underlying mechanisms were further investigated using dual-luciferase reporter, co-immunoprecipitation, immunofluorescence, and chromatin immunoprecipitation assays. We found that Tex10 was upregulated in HCC tumor tissues compared to adjacent normal tissues, with its expression correlated with a poor prognosis. Gene ontology function enrichment analysis revealed alterations in several biological processes in response to Tex10 knockdown, especially cell motility and cell migration. Functional studies demonstrated that Tex10 promotes HCC cell proliferation, migration, invasion, and metastasis in vitro and in vivo. Moreover, Tex10 was shown to regulate invasion and epithelial-mesenchymal transition via signal transducer and activator of transcription 3 (STAT3) signaling. Mechanistically, Tex10 was found to interact with STAT3 and promote its transcriptional activity. In addition, we found that Tex10 promotes p300-mediated STAT3 acetylation, while p300 silencing abolishes Tex10-enhanced STAT3 transcriptional activity. Together, these findings indicate that Tex10 functions as an oncogene by upregulating STAT3 activity, thus suggesting that Tex10 may serve as a prognostic biomarker and/or therapeutic target for HCC patients.


Asunto(s)
Carcinoma Hepatocelular , Neoplasias Hepáticas , Masculino , Animales , Ratones , Humanos , Carcinoma Hepatocelular/patología , Neoplasias Hepáticas/patología , Factor de Transcripción STAT3/genética , Factor de Transcripción STAT3/metabolismo , Ratones Desnudos , Línea Celular Tumoral , Proliferación Celular , Movimiento Celular , Regulación Neoplásica de la Expresión Génica , Metástasis de la Neoplasia
17.
J Virol ; 96(13): e0054622, 2022 07 13.
Artículo en Inglés | MEDLINE | ID: mdl-35695580

RESUMEN

Nuclear located hepatitis B virus (HBV) covalently closed circular DNA (cccDNA) remains the key obstacle to cure chronic hepatitis B (CHB). In our previous investigation, it was found that FoxO4 could inhibit HBV core promoter activity through downregulating the expression of HNF4α. However, the exact mechanisms whereby FoxO4 inhibits HBV replication, especially its effect on cccDNA, remain unclear. Here, our data further revealed that FoxO4 could effectively inhibit cccDNA mediated transcription and HBV replication without affecting cccDNA level. Mechanistic study showed that FoxO4 could cause epigenetic suppression of cccDNA. Although FoxO4-mediated downregulation of HNF4α contributed to inhibiting HBV core promoter activity, it had little effect on cccDNA epigenetic regulation. Further, it was found that FoxO4 could colocalize within promyelocytic leukemia protein (PML) nuclear bodies and interact with PML. Of note, PML was revealed to be critical for FoxO4-mediated inhibition of cccDNA epigenetic modification and of the following cccDNA transcription and HBV replication. Furthermore, FoxO4 was found to be downregulated in HBV-infected hepatocytes and human liver tissues, and it was negatively correlated with cccDNA transcriptional activity in CHB patients. Together, these findings highlight the role of FoxO4 in suppressing cccDNA transcription and HBV replication via genetic downregulation of HNF4α and epigenetic suppression of cccDNA through interacting with PML. Targeting FoxO4 may present as a new therapeutic strategy against chronic HBV infection. IMPORTANCE HBV cccDNA is a determining factor for viral persistence and the main obstacle for a cure of chronic hepatitis B. Strategies that target cccDNA directly are therefore of great importance in controlling persistent HBV infection. In present investigation, we found that FoxO4 could efficiently suppress cccDNA transcription and HBV replication without affecting the level of cccDNA itself. Further, our data revealed that FoxO4 might inhibit cccDNA function via a two-part mechanism: one is to epigenetically suppress cccDNA transcription via interacting with PML, and the other is to inhibit HBV core promoter activity via the genetic downregulation of HNF4α. Of note, HBV might dampen the expression of FoxO4 for its own persistent infection. We propose that manipulation of FoxO4 may present as a potential therapeutic strategy against chronic HBV infection.


Asunto(s)
Regulación hacia Abajo , Factores de Transcripción Forkhead , Virus de la Hepatitis B , Proteína de la Leucemia Promielocítica , Replicación Viral , ADN Circular/genética , ADN Viral/genética , Epigénesis Genética , Factores de Transcripción Forkhead/metabolismo , Virus de la Hepatitis B/genética , Virus de la Hepatitis B/metabolismo , Hepatitis B Crónica/fisiopatología , Hepatitis B Crónica/virología , Factor Nuclear 4 del Hepatocito/genética , Factor Nuclear 4 del Hepatocito/metabolismo , Humanos , Proteína de la Leucemia Promielocítica/metabolismo , Transcripción Genética/genética , Replicación Viral/genética
18.
BMC Microbiol ; 23(1): 70, 2023 03 15.
Artículo en Inglés | MEDLINE | ID: mdl-36922757

RESUMEN

BACKGROUND: The nutrient availability of roughages could affect the dietary utilization efficiency of ruminants even in isocaloric and isonitrogenous diets. Here, we analyzed the bacterial composition and their metabolic pathways in the gastrointestinal tracts (GITs) of Hu sheep fed with wheat straw (WS) instead of alfalfa (AL) in isocaloric and isonitrogenous diets, trying to explore the reasons from the perspective of GITs bacterial network structure changes. RESULTS: We employed 16S rRNA gene sequencing in combination with the Kruskal-Wallis test, Spearman correlation analysis, and other statistical methods to describe the microbiota composition in the GITs of Hu sheep. The results showed after the roughage was replaced from AL to WS, the most positive response occurred in the rumen microbiota, resulting in a more obvious microbiological and functional redundancy phenomenon. Whereas extended biogeographic studies of the GITs bacterial community found opposite results for the hindgut microbiota and metabolism networks compared to the forestomach. The abundance of fiber-degrading bacteria such as Prevotella, Oscillospiraceae NK4A214 group, and Treponema was significantly increased in GITs, but low-efficiency crude fiber degradation inhibited energy use efficiency, the pentose phosphate pathway, gluconeogenesis, and volatile acid synthesis. In addition, dietary shifting from AL to WS decreased the abundance of beneficial bacteria such as the Lachnospiraceae NK3A20 group and Alistipes, thereby enhancing the underlying inflammatory response. CONCLUSIONS: These findings suggest that feeding untreated WS affected the structure and function of the bacterial network in the GITs due to limited total digestible nutrients, and in particular increases the complexity of the rumen bacterial network, and limit the abundance of bacteria involved in the crude fiber degradation in the hindgut.


Asunto(s)
Alimentación Animal , Fibras de la Dieta , Ovinos , Animales , Fibras de la Dieta/metabolismo , ARN Ribosómico 16S/genética , ARN Ribosómico 16S/análisis , Digestión , Dieta/veterinaria , Rumiantes , Tracto Gastrointestinal/metabolismo , Nutrientes , Rumen/microbiología , Triticum , Bacterias/genética , Bacterias/metabolismo , Fermentación
19.
J Med Virol ; 95(10): e29161, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37814968

RESUMEN

Fear of possible negative effects of coronavirus disease 2019 (COVID-19) vaccine on fertility is the main reason for vaccine hesitancy among the public especially women of childbearing age. Despite the high coverage of COVID-19 vaccination in China, more scientific evidence is still needed to address their concerns and guide fertility counseling and management in the future. Herein, we performed a retrospective cohort study at a single large center for reproductive medicine in China between August 2020 and May 2023. Patients aged 20-42 years with no history of laboratory-confirmed COVID-19 were included and categorized into different groups according to their vaccination status. The serum sex hormone levels, anti-Müllerian hormone concentrations, embryo quality, and pregnancy outcomes were evaluated and compared among them. We found there were no significant differences in the concentrations of follicle-stimulating hormone, luteinizing hormone and progesterone between the unvaccinated, first-dose, second-dose, and booster vaccinated groups. However, the estradiol showed a highly significant increase in the one-dose vaccinated group compared with its levels in other groups. Among unvaccinated and either vaccinated patients, anti-Müllerian hormone levels were comparable (p = 0.139). The number of oocytes retrieved, fertilization rate and good-quality embryo rate were all similar between each group of in vitro fertilization and intracytoplasmic sperm injection. No significant differences were observed regarding other laboratory parameters. Moreover, the vaccination status of infertile couples did not exert any adverse effect on the pregnancy outcomes in all assisted reproductive technologies cycles. In short, we comprehensively evaluated the reproductive safety of inactivated severe acute respiratory syndrome coronavirus 2 vaccine and found any dose of vaccination wouldn't negatively affect female fertility parameters such as sex hormone levels and ovarian reserve. Moreover, this is the first study to complete the live birth follow-up of the cohort after receiving inactivated severe acute respiratory syndrome coronavirus 2 vaccine, further dispelling the misconception and providing reassurance for decision-making by clinicians.


Asunto(s)
Vacunas contra la COVID-19 , COVID-19 , Fertilidad , Femenino , Humanos , Masculino , Embarazo , Hormona Antimülleriana , COVID-19/prevención & control , Vacunas contra la COVID-19/efectos adversos , Fertilización In Vitro , Hormonas Esteroides Gonadales , Índice de Embarazo , Estudios Retrospectivos , SARS-CoV-2 , Semen
20.
Cardiovasc Diabetol ; 22(1): 281, 2023 10 21.
Artículo en Inglés | MEDLINE | ID: mdl-37865764

RESUMEN

BACKGROUND: Among patients with acute coronary syndrome and percutaneous coronary intervention, stress hyperglycemia ratio (SHR) is primarily associated with short-term unfavorable outcomes. However, the relationship between SHR and long-term worsen prognosis in acute myocardial infarction (AMI) patients admitted in intensive care unit (ICU) are not fully investigated, especially in those with different ethnicity. This study aimed to clarify the association of SHR with all-cause mortality in critical AMI patients from American and Chinese cohorts. METHODS: Overall 4,337 AMI patients with their first ICU admission from the American Medical Information Mart for Intensive Care (MIMIC)-IV database (n = 2,166) and Chinese multicenter registry cohort Cardiorenal ImprovemeNt II (CIN-II, n = 2,171) were included in this study. The patients were divided into 4 groups based on quantiles of SHR in both two cohorts. RESULTS: The total mortality was 23.8% (maximum follow-up time: 12.1 years) in American MIMIC-IV and 29.1% (maximum follow-up time: 14.1 years) in Chinese CIN-II. In MIMIC-IV cohort, patients with SHR of quartile 4 had higher risk of 1-year (adjusted hazard radio [aHR] = 1.87; 95% CI: 1.40-2.50) and long-term (aHR = 1.63; 95% CI: 1.27-2.09) all-cause mortality than quartile 2 (as reference). Similar results were observed in CIN-II cohort (1-year mortality: aHR = 1.44; 95%CI: 1.03-2.02; long-term mortality: aHR = 1.32; 95%CI: 1.05-1.66). In both two group, restricted cubic splines indicated a J-shaped correlation between SHR and all-cause mortality. In subgroup analysis, SHR was significantly associated with higher 1-year and long-term all-cause mortality among patients without diabetes in both MIMIC-IV and CIN-II cohort. CONCLUSION: Among critical AMI patients, elevated SHR is significantly associated with and 1-year and long-term all-cause mortality, especially in those without diabetes, and the results are consistently in both American and Chinese cohorts.


Asunto(s)
Hiperglucemia , Infarto del Miocardio , Humanos , China/epidemiología , Pueblos del Este de Asia , Infarto del Miocardio/complicaciones , Infarto del Miocardio/diagnóstico , Infarto del Miocardio/mortalidad , Infarto del Miocardio/terapia , Pronóstico , Estados Unidos/epidemiología
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