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1.
Proc Natl Acad Sci U S A ; 121(17): e2311075121, 2024 Apr 23.
Artículo en Inglés | MEDLINE | ID: mdl-38625942

RESUMEN

Voltage oscillation at subzero in sodium-ion batteries (SIBs) has been a common but overlooked scenario, almost yet to be understood. For example, the phenomenon seriously deteriorates the performance of Na3V2(PO4)3 (NVP) cathode in PC (propylene carbonate)/EC (ethylene carbonate)-based electrolyte at -20 °C. Here, the correlation between voltage oscillation, structural evolution, and electrolytes has been revealed based on theoretical calculations, in-/ex-situ techniques, and cross-experiments. It is found that the local phase transition of the Na3V2(PO4)3 (NVP) cathode in PC/EC-based electrolyte at -20 °C should be responsible for the oscillatory phenomenon. Furthermore, the low exchange current density originating from the high desolvation energy barrier in NVP-PC/EC system also aggravates the local phase transformation, resulting in severe voltage oscillation. By introducing the diglyme solvent with lower Na-solvent binding energy, the voltage oscillation of the NVP can be eliminated effectively at subzero. As a result, the high capacity retentions of 98.3% at -20 °C and 75.3% at -40 °C are achieved. The finding provides insight into the abnormal SIBs degradation and brings the voltage oscillation behavior of rechargeable batteries into the limelight.

2.
Proc Natl Acad Sci U S A ; 121(5): e2316914121, 2024 Jan 30.
Artículo en Inglés | MEDLINE | ID: mdl-38252828

RESUMEN

High-performance sodium storage at low temperature is urgent with the increasingly stringent demand for energy storage systems. However, the aggravated capacity loss is induced by the sluggish interfacial kinetics, which originates from the interfacial Na+ desolvation. Herein, all-fluorinated anions with ultrahigh electron donicity, trifluoroacetate (TFA-), are introduced into the diglyme (G2)-based electrolyte for the anion-reinforced solvates in a wide temperature range. The unique solvation structure with TFA- anions and decreased G2 molecules occupying the inner sheath accelerates desolvation of Na+ to exhibit decreased desolvation energy from 4.16 to 3.49 kJ mol-1 and 24.74 to 16.55 kJ mol-1 beyond and below -20 °C, respectively, compared with that in 1.0 M NaPF6-G2. These enable the cell of Na||Na3V2(PO4)3 to deliver 60.2% of its room-temperature capacity and high capacity retention of 99.2% after 100 cycles at -40 °C. This work highlights regulation of solvation chemistry for highly stable sodium-ion batteries at low temperature.

3.
J Am Chem Soc ; 146(1): 1100-1108, 2024 Jan 10.
Artículo en Inglés | MEDLINE | ID: mdl-38127285

RESUMEN

Organic carbonyl electrode materials have shown great promise for high-performance lithium batteries due to their high capacity, renewability, and environmental friendliness. However, their practical application is hindered by the high solubility of these materials in traditional electrolytes, leading to poor cycling stability and serious shuttle effects. Here, we develop a series of hydrofluoroethers (HFEs) with weak electrostatic interaction toward organic carbonyl cathode materials, aiming to address the dissolution issue and achieve high cycling stability in lithium batteries. Theoretical calculations reveal that the electrostatic interactions between HFEs and pyrene-4,5,9,10-tetraone (PTO) are significantly weaker compared with common solvents such as 1,2-dimethoxyethane. Consequently, the dissolution of PTO in the HFE-based electrolyte is remarkably reduced, as observed by in situ ultraviolet-visible spectra. Notably, when using the electrolyte based on 1,1,1,3,3,3-hexafluoro-2-methoxypropane with a certain coordination ability, PTO exhibits excellent cycling stability with a high capacity retention of 78% after 1000 cycles. This work proposes the regulation of electrostatic interactions to inhibit the dissolution of organic carbonyl cathode materials and significantly enhance their cycle life.

4.
Small ; : e2403869, 2024 Aug 05.
Artículo en Inglés | MEDLINE | ID: mdl-39101346

RESUMEN

Cancer metastasis poses significant challenges in current clinical therapy. Osthole (OST) has demonstrated efficacy in treating cervical cancer and inhibiting metastasis. Despite these positive results, its limited solubility, poor oral absorption, low bioavailability, and photosensitivity hinder its clinical application. To address this limitation, a glutathione (GSH)-responded nano-herb delivery system (HA/MOS@OST&L-Arg nanoparticles, HMOA NPs) is devised for the targeted delivery of OST with cascade-activatable nitric oxide (NO) release. The HMOA NPs system is engineered utilizing enhanced permeability and retention (EPR) effects and active targeting mediated by hyaluronic acid (HA) binding to glycoprotein CD44. The cargoes, including OST and L-Arginine (L-Arg), are released rapidly due to the degradation of GSH-responsive mesoporous organic silica (MOS). Then abundant reactive oxygen species (ROS) are produced from OST in the presence of high concentrations of NAD(P)H quinone oxidoreductase 1 (NQO1), resulting in the generation of NO and subsequently highly toxic peroxynitrite (ONOO-) by catalyzing guanidine groups of L-Arg. These ROS, NO, and ONOO- molecules have a direct impact on mitochondrial function by reducing mitochondrial membrane potential and inhibiting adenosine triphosphate (ATP) production, thereby promoting increased apoptosis and inhibiting metastasis. Overall, the results indicated that HMOA NPs has great potential as a promising alternative for the clinical treatment of cervical cancer.

5.
Appl Opt ; 63(4): 1182-1187, 2024 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-38437417

RESUMEN

The investigation of atmospheric aerosols holds paramount importance within the environmental realm. This significance arises from the intricate nature of aerosol distribution and size in real-life hazy weather conditions. In this work, we have employed the equivalent radius of the aerosols in haze weather obtained from the volume spectrum, and then the scattering characteristics of these aerosols are obtained using the equivalent radius. Pearson correlation coefficients have been used for revealing a strong correlation by comparing Aeronet website data and simulation results with a minimum value of 0.657.

6.
Phytother Res ; 38(4): 1863-1881, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38358766

RESUMEN

Forsythia suspensa tea is a popular traditional Chinese medicine decoction for its healthy and therapeutic benefits. However, its effects in bone metabolism were not clear. In recent study, we uncovered anti-osteoclastogenesis property of Phillygenin (Phi), a compound abundant in Forsythia suspensa leaves, and aimed to investigate the effect and mechanism of Phi on bone metabolism in vivo and in vitro. Lipopolysaccharides-induced murine calvaria osteolysis and ovariectomy-induced bone loss animal models were used to identify the bone-protective effect of Phi in vivo and micro-CT, pQCT, and TRAP staining were applied. We used CCK8, TUNEL, BrdU, and TRAP staining to evaluate the efficacy of Phi on the proliferation and formation of OCs in primary mBMMs. RNA sequence, activity-based protein profiling, molecular docking, G-LISA, and WB were used to inspect the target and underlying mechanism of Phi's actions in mBMMs. We found Phi significantly inhibited bone resorption in vivo and inhibited mBMMs osteoclastogenesis in vitro. Ras homolog gene family member A (RhoA) was identified as the direct target of Phi. It counteracted the effects of RhoA activator and acted as a RhoA inhibitor. By targeting RhoA, Phi modulated Rho-associated coiled-coil containing protein kinase 1 (ROCK1) activity and regulated its downstream NF-κB/NFATc1/c-fos pathway. Furthermore, Phi depressed the disassembling of F-actin ring through cofilin and myosin1a. Our findings provided Phi as a potential option for treating bone loss diseases by targeting RhoA and highlighted the importance of F. suspensa as a preventive approach in bone disorders.


Asunto(s)
Enfermedades Óseas Metabólicas , Resorción Ósea , Lignanos , Osteólisis , Animales , Femenino , Ratones , Resorción Ósea/tratamiento farmacológico , Resorción Ósea/prevención & control , Diferenciación Celular , Lignanos/farmacología , Simulación del Acoplamiento Molecular , FN-kappa B/metabolismo , Factores de Transcripción NFATC/metabolismo , Factores de Transcripción NFATC/farmacología , Osteoclastos , Osteogénesis , Osteólisis/inducido químicamente
7.
Int J Mol Sci ; 25(2)2024 Jan 20.
Artículo en Inglés | MEDLINE | ID: mdl-38279271

RESUMEN

Albinism is characterized by a variable degree of hypopigmentation affecting the skin and the hair, and causing ophthalmologic abnormalities. Its oculocutaneous, ocular and syndromic forms follow an autosomal or X-linked recessive mode of inheritance, and 22 disease-causing genes are implicated in their development. Our aim was to clarify the genetic background of a Hungarian albinism cohort. Using a 22-gene albinism panel, the genetic background of 11 of the 17 Hungarian patients was elucidated. In patients with unidentified genetic backgrounds (n = 6), whole exome sequencing was performed. Our investigations revealed a novel, previously unreported rare variant (N687S) of the two-pore channel two gene (TPCN2). The N687S variant of the encoded TPC2 protein is carried by a 15-year-old Hungarian male albinism patient and his clinically unaffected mother. Our segregational analysis and in vitro functional experiments suggest that the detected novel rare TPCN2 variant alone is not a disease-causing variant in albinism. Deep genetic analyses of the family revealed that the patient also carries a phenotype-modifying R305W variant of the OCA2 protein, and he is the only family member harboring this genotype. Our results raise the possibility that this digenic combination might contribute to the observed differences between the patient and the mother, and found the genetic background of the disease in his case.


Asunto(s)
Albinismo , Proteínas de Transporte de Membrana , Humanos , Masculino , Adolescente , Hungría , Mutación , Proteínas de Transporte de Membrana/metabolismo , Albinismo/genética , Antecedentes Genéticos
8.
Int J Mol Sci ; 24(24)2023 Dec 12.
Artículo en Inglés | MEDLINE | ID: mdl-38139213

RESUMEN

NAC is a class of plant-specific transcription factors that are widely involved in the growth, development and (a)biotic stress response of plants. However, their molecular evolution has not been extensively studied in Malvales, especially in Aquilaria sinensis, a commercial and horticultural crop that produces an aromatic resin named agarwood. In this study, 1502 members of the NAC gene family were identified from the genomes of nine species from Malvales and three model plants. The macroevolutionary analysis revealed that whole genome duplication (WGD) and dispersed duplication (DSD) have shaped the current architectural structure of NAC gene families in Malvales plants. Then, 111 NAC genes were systemically characterized in A. sinensis. The phylogenetic analysis suggests that NAC genes in A. sinensis can be classified into 16 known clusters and four new subfamilies, with each subfamily presenting similar gene structures and conserved motifs. RNA-seq analysis showed that AsNACs presents a broad transcriptional response to the agarwood inducer. The expression patterns of 15 AsNACs in A. sinensis after injury treatment indicated that AsNAC019 and AsNAC098 were positively correlated with the expression patterns of four polyketide synthase (PKS) genes. Additionally, AsNAC019 and AsNAC098 were also found to bind with the AsPKS07 promoter and activate its transcription. This comprehensive analysis provides valuable insights into the molecular evolution of the NAC gene family in Malvales plants and highlights the potential mechanisms of AsNACs for regulating secondary metabolite biosynthesis in A. sinensis, especially for the biosynthesis of 2-(2-phenyl) chromones in agarwood.


Asunto(s)
Malvales , Thymelaeaceae , Factores de Transcripción/genética , Factores de Transcripción/metabolismo , Filogenia , Thymelaeaceae/genética , Thymelaeaceae/química , Genes de Plantas
9.
Nat Commun ; 15(1): 73, 2024 01 02.
Artículo en Inglés | MEDLINE | ID: mdl-38168108

RESUMEN

Transcription-replication conflicts (TRCs), especially Head-On TRCs (HO-TRCs) can introduce R-loops and DNA damage, however, the underlying mechanisms are still largely unclear. We previously identified a chloroplast-localized RNase H1 protein AtRNH1C that can remove R-loops and relax HO-TRCs for genome integrity. Through the mutagenesis screen, we identify a mutation in chloroplast-localized primase ATH that weakens the binding affinity of DNA template and reduces the activities of RNA primer synthesis and delivery. This slows down DNA replication, and reduces competition of transcription-replication, thus rescuing the developmental defects of atrnh1c. Strand-specific DNA damage sequencing reveals that HO-TRCs cause DNA damage at the end of the transcription unit in the lagging strand and overexpression of ATH can boost HO-TRCs and exacerbates DNA damage. Furthermore, mutation of plastid DNA polymerase Pol1A can similarly rescue the defects in atrnh1c mutants. Taken together these results illustrate a potentially conserved mechanism among organisms, of which the primase activity can promote the occurrence of transcription-replication conflicts leading to HO-TRCs and genome instability.


Asunto(s)
ADN Primasa , Replicación del ADN , ADN Primasa/genética , ADN Primasa/metabolismo , Replicación del ADN/genética , ADN Polimerasa Dirigida por ADN/genética , ADN Polimerasa Dirigida por ADN/metabolismo , Daño del ADN , Mutación
10.
J Affect Disord ; 365: 213-221, 2024 Aug 16.
Artículo en Inglés | MEDLINE | ID: mdl-39154980

RESUMEN

BACKGROUND: The excessive secretion of glucocorticoids resulting from the overactivation of the hypothalamic-pituitary-adrenal axis is a crucial factor in the pathogenesis of depression. RIPK3 plays a significant role in apoptosis and necroptosis. Glucocorticoids have been implicated in directly regulating the expression of RIPK3, leading to apoptosis and necroptosis of osteoblasts. This suggests that RIPK3 may contribute to cell death induced by glucocorticoids. However, the precise involvement of RIPK3 in glucocorticoid-induced depression remains poorly understood. METHODS: In this study, a mouse model of depression was established by repeated corticosterone injections to examine the impact of RIPK3 knockdown on depression-like behavior. Additionally, a corticosterone-induced HT22 injury model was also established to investigate the role of RIPK3 in corticosterone-induced neuronal cell death and underlying mechanisms. RESULTS: Our findings demonstrate that hippocampal RIPK3 knockdown effectively ameliorated depression-related symptoms and restored synaptic plasticity impairment caused by corticosterone. Furthermore, treatment with the RIPK3 inhibitor GSK872 in vitro successfully mitigated corticosterone-induced HT22 cell death. Additionally, the administration of a free radical scavenger alleviated neuronal death and effectively suppressed the expression of corticosterone-induced RIPK3. LIMITATIONS: The limitation of this study is that only the changes of RIPK3 in the hippocampus of depressed male animals were studied. CONCLUSIONS: These results suggest that corticosterone may induce RIPK3-dependent neuronal cell death and impair synaptic plasticity through the generation of high levels of oxidative stress, ultimately leading to depression-like behavior.

11.
Environ Sci Pollut Res Int ; 31(27): 39388-39405, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38819508

RESUMEN

In the context of increasing global resource and environmental problems, it is of great practical significance to accurately test the impact of various factors on energy use efficiency for maintaining national energy security and formulating relevant policies. This paper measures firms' total factor energy efficiency (TFEE) using the two-stage stochastic frontier method within the data envelopment analysis (DEA) framework, leveraging data from listed firms in China spanning 2010 to 2022. Employing the establishment of free trade zones (FTZs) as a quasi-natural experiment, we apply the staggered differences-in-differences (DID) and stacked DID methods and analyze the impact of FTZs on firms' TFEE. The results show that the establishment of FTZs significantly promotes the improvement of firms' TFEE, and it has a greater promotion effect on heavily polluting, non-manufacturing, state-owned, private, and small-scale firms. The results of the mechanistic analysis showed that the promotion effect of FTZs on firms' TFEE is mainly realized through three channels: increasing government subsidies, reducing the financing constraint effect, and encouraging the technology innovation effect. Furthermore, industry-level decomposition results indicate that the surge in industry energy efficiency primarily results from improvements within firms rather than inter-industry variations. This paper's results propose that countries can enhance energy efficiency by progressively endorsing the implementation of FTZs.


Asunto(s)
Comercio , China , Industrias
12.
Plants (Basel) ; 13(2)2024 Jan 16.
Artículo en Inglés | MEDLINE | ID: mdl-38256813

RESUMEN

Cucurbitacins, oxygenated tetracyclic triterpenoids that are found mainly in the Cucurbitaceae family, play essential roles as defensive compounds, serving as allomones against herbivores and pathogens and as signals for insect-parasite recognition. These compounds also exhibit various pharmacological effects. The biosynthesis of cucurbitacins is largely regulated by the bitter (Bi) gene, encoding an oxidosqualene cyclase, which catalyzes the conversion of 2,3-oxidosqualene into cucurbitadienol, a common precursor for cucurbitacin synthesis. Previous studies focused on uncovering the Bi gene clusters in Cucurbitaceae, but their presence in other cucurbitacin-producing plants remained unexplored. Here, the evolutionary history of Bi genes and their clusters were investigated in twenty-one plant genomes spanning three families based on chemotaxonomy. Nineteen Bi genes were identified in fourteen Cucurbitaceae, four Begoniaceae, and one Aquilaria species. Phylogenetic analysis suggested that the genome of Aquilaria sinensis contained the earliest Bi gene clusters in this dataset. Moreover, the genomic analysis revealed a conserved microsynteny of pivotal genes for cucurbitacin biosynthesis in Cucurbitaceae, while interspersed Bi gene clusters were observed in Begoniaceae, indicating rearrangements during plant Bi gene cluster formation. The bitter gene in A. sinensis was found to promote cucurbitadienol biosynthesis in the leaves of Nicotiana benthamiana. This comprehensive exploration of plant Bi genes and their clusters provides valuable insights into the genetic and evolutionary underpinnings of cucurbitacin biosynthesis. These findings offer prospects for a deeper understanding of cucurbitacin production and potential genetic resources for their enhancement in various plants.

13.
Medicine (Baltimore) ; 103(31): e39153, 2024 Aug 02.
Artículo en Inglés | MEDLINE | ID: mdl-39093744

RESUMEN

BACKGROUND: WD repeat domain 43 (WDR43) is a protein component that encodes WD-repeats and is involved in ribosome biogenesis. However, little is known about the role of WDR43 in cancer prognosis and immune modulation. METHODS: In this study, we analyzed the expression and prognostic significance of WDR43 in pan-cancer using the Cancer Genome Atlas, the Genotype-Tissue Expression, and the Human Protein Atlas. We also examined the differential expression of WDR43 in liver hepatocellular carcinoma (LIHC) and adjacent tissues of 48 patients using immunohistochemistry. Additionally, we investigated the correlation between WDR43 and clinical characteristics, gene alterations, tumor mutation burden, microsatellite instability, mismatch repair, tumor microenvironment, immune infiltrating cells, and immune-related genes using bioinformatics methods. Gene set enrichment analysis was conducted, and potential biological mechanisms were identified. RESULTS: Immunohistochemistry staining showed that WDR43 was overexpressed in LIHC among 48 patients. Upregulation of WDR43 was associated with unfavorable prognosis, including overall survival in various types of cancer such as LIHC, uterine corpus endometrial cancer, head and neck squamous cell carcinoma, and pancreatic adenocarcinoma. Differential expression of WDR43 was significantly correlated with microsatellite instability, mismatch repair, and immune cell infiltration. Gene ontology annotation analysis revealed that these genes were significantly enriched in immune-related functions, including immune response, immune regulation, and signaling pathways. CONCLUSION: We conducted a thorough investigation of the clinical features, phases of tumor development, immune infiltration, gene mutation, and functional enrichment analysis of WDR43 in various types of cancer. This research offers valuable insight into the significance and function of WDR43 in clinical therapy.


Asunto(s)
Biomarcadores de Tumor , Humanos , Pronóstico , Femenino , Biomarcadores de Tumor/genética , Biomarcadores de Tumor/metabolismo , Masculino , Inestabilidad de Microsatélites , Carcinoma Hepatocelular/genética , Carcinoma Hepatocelular/inmunología , Carcinoma Hepatocelular/patología , Carcinoma Hepatocelular/mortalidad , Microambiente Tumoral/inmunología , Microambiente Tumoral/genética , Neoplasias Hepáticas/genética , Neoplasias Hepáticas/inmunología , Neoplasias Hepáticas/patología , Neoplasias Hepáticas/mortalidad , Persona de Mediana Edad , Inmunohistoquímica , Neoplasias/inmunología , Neoplasias/genética , Neoplasias/patología , Regulación Neoplásica de la Expresión Génica , Linfocitos Infiltrantes de Tumor/inmunología
14.
Cogn Neurodyn ; 18(4): 1563-1574, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-39104704

RESUMEN

Autism spectrum disorder (ASD) is a general neurodevelopmental disease characterized by unusual social communication and rigid, repetitive behavior patterns. The purpose of this study was to investigate the effects of ASD on the alteration of neural oscillatory patterns and synaptic plasticity, which commonly supported a wide range of basic and higher memory activities. Accordingly, a prenatal valproic acid (VPA) exposure rat model was established for studying autism. The behavioral experiments showed that the social orientation declined and the memory ability was significantly impaired in VPA rats, which was closely associated with the synaptic plasticity deficits. Neural oscillation is the rhythmic neuron-activity, and the pathological characteristics and neurological changes in autism may be peeped at the neural oscillatory analysis. Interestingly, neural oscillatory analysis showed that prenatal VPA exposure reduced the low-frequency power but increased high-frequency gamma (HG) power in the hippocampus CA1 area. Meanwhile, the coherence and synchronization between CA3 and CA1 were abnormally increased in the VPA group, especially in theta and HG rhythms. Furthermore, the cross-frequency coupling strength of theta-LG in the CA1 and CA3 → CA1 pathway was significantly attenuated, but the theta-HG coupling strength was increased. Additionally, prenatal VPA exposure inhibited the expression of SYP and NR2B but enhanced the expression of PSD-95 along with decreased synaptic plasticity. The neural oscillatory patterns in VPA-induced offspring were disturbed with the intensity and direction of neural information flow disordered, which are consistent with the changes in synaptic plasticity, suggesting that the decline in synaptic plasticity is the underlying mechanism.

15.
Immun Inflamm Dis ; 12(7): e1301, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38967361

RESUMEN

OBJECTIVE: Acute pancreatitis (AP) stands as a frequent cause for clinical emergency hospital admissions. The X-box binding protein 1 (XBP1) was found to be implicated in pancreatic acinar cell apoptosis. The objective is to unveil the potential mechanisms governed by XBP1 and SIRT6 in the context of AP. METHODS: Caerulein-treated human pancreatic duct epithelial (HPDE) cells to establish an in vitro research model. The levels and regulatory role of SIRT6 in the treated cells were evaluated, including its effects on inflammatory responses, oxidative stress, apoptosis, and endoplasmic reticulum stress. The relationship between XBP1 and SIRT6 was explored by luciferase and ChIP experiments. Furthermore, the effect of XBP1 overexpression on the regulatory function of SIRT6 on cells was evaluated. RESULTS: Caerulein promoted the decrease of SIRT6 and the increase of XBP1 in HPDE cells. Overexpression of SIRT6 slowed down the secretion of inflammatory factors, oxidative stress, apoptosis level, and endoplasmic reticulum stress in HPDE cells. However, XBP1 negatively regulated SIRT6, and XBP1 overexpression partially reversed the regulation of SIRT6 on the above aspects. CONCLUSION: Our study illuminates the role of XBP1 in downregulating SIRT6 in HPDE cells, thereby promoting cellular injury. Inhibiting XBP1 or augmenting SIRT6 levels holds promise in preserving cell function and represents a potential therapeutic avenue in the management of AP.


Asunto(s)
Apoptosis , Regulación hacia Abajo , Células Epiteliales , Conductos Pancreáticos , Pancreatitis , Sirtuinas , Proteína 1 de Unión a la X-Box , Humanos , Sirtuinas/metabolismo , Sirtuinas/genética , Células Epiteliales/metabolismo , Proteína 1 de Unión a la X-Box/metabolismo , Proteína 1 de Unión a la X-Box/genética , Pancreatitis/metabolismo , Pancreatitis/patología , Conductos Pancreáticos/metabolismo , Conductos Pancreáticos/patología , Estrés del Retículo Endoplásmico , Estrés Oxidativo , Línea Celular , Ceruletida/toxicidad
16.
Behav Brain Res ; 469: 115052, 2024 Jul 09.
Artículo en Inglés | MEDLINE | ID: mdl-38782096

RESUMEN

Autism spectrum disorder (ASD) is a pervasive developmental disorder with gender differences. Oxytocin (OXT) is currently an important candidate drug for autism, but the lack of data on female autism is a big issue. It has been reported that the effect of OXT is likely to be different between male and female ASD patients. In the study, we specifically explored the role of the OXT signaling pathway in a VPA-induced female rat's model of autism. The data showed that there was an increase of either oxytocin or its receptor expressions in both the hippocampus and the prefrontal cortex of VPA-induced female offspring. To determine if the excess of OXT signaling contributed to autism symptoms in female rats, exogenous oxytocin and oxytocin receptor antagonists Atosiban were used in the experiment. It was found that exogenous oxytocin triggered autism-like behaviors in wild-type female rats by intranasal administration. More interestingly, several autism-like deficits including social interaction, anxiety, and repeat stereotypical sexual behavior in the VPA female offspring were significantly attenuated by oxytocin receptor antagonists Atosiban. Moreover, Atosiban also effectively improved the synaptic plasticity impairment induced by VPA in female offspring. Our results suggest that oxytocin receptor antagonists significantly improve autistic-like behaviors in a female rat model of valproic acid-induced autism.


Asunto(s)
Trastorno Autístico , Modelos Animales de Enfermedad , Oxitocina , Receptores de Oxitocina , Ácido Valproico , Vasotocina , Animales , Ácido Valproico/farmacología , Femenino , Receptores de Oxitocina/antagonistas & inhibidores , Receptores de Oxitocina/metabolismo , Oxitocina/farmacología , Oxitocina/metabolismo , Oxitocina/administración & dosificación , Ratas , Vasotocina/análogos & derivados , Vasotocina/farmacología , Trastorno Autístico/inducido químicamente , Trastorno Autístico/tratamiento farmacológico , Corteza Prefrontal/efectos de los fármacos , Corteza Prefrontal/metabolismo , Trastorno del Espectro Autista/inducido químicamente , Trastorno del Espectro Autista/tratamiento farmacológico , Hipocampo/efectos de los fármacos , Hipocampo/metabolismo , Conducta Animal/efectos de los fármacos , Ratas Sprague-Dawley , Plasticidad Neuronal/efectos de los fármacos , Interacción Social/efectos de los fármacos , Conducta Sexual Animal/efectos de los fármacos , Ansiedad/tratamiento farmacológico , Ansiedad/inducido químicamente , Embarazo
17.
Pharmacol Biochem Behav ; 240: 173788, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38734150

RESUMEN

Autism is a complex neurodevelopmental disorder with no effective treatment available currently. Repetitive transcranial magnetic stimulation (rTMS) is emerging as a promising neuromodulation technique to treat autism. However, the mechanism how rTMS works remains unclear, which restrict the clinical application of magnetic stimulation in the autism treatment. In this study, we investigated the effect of low-frequency rTMS on the autistic-like symptoms and explored if this neuroprotective effect was associated with synaptic plasticity and neuroinflammation in the hippocampus. A rat model of autism was established by intraperitoneal injection of valproic acid (VPA) in pregnant rats and male offspring were treated with 1 Hz rTMS daily for two weeks continuously. Behavior tests were performed to identify behavioral abnormality. Synaptic plasticity was measured by in vivo electrophysiological recording and Golgi-Cox staining. Synapse and inflammation associated proteins were detected by immunofluorescence and Western blot analyses. Results showed prenatal VPA-exposed rats exhibited autistic-like and anxiety-like behaviors, and cognitive impairment. Synaptic plasticity deficits and the abnormality expression of synapse-associated proteins were found in the hippocampus of prenatal VPA-exposed rats. Prenatal VPA exposure increased the level of inflammation cytokines and promoted the excessive activation of microglia. rTMS significantly alleviated the prenatal VPA-induced abnormalities including behavioral and synaptic plasticity deficits, and excessive neuroinflammation. TMS maybe a potential strategy for autism therapy via rescuing synaptic plasticity and inhibiting neuroinflammation.


Asunto(s)
Trastorno Autístico , Modelos Animales de Enfermedad , Hipocampo , Plasticidad Neuronal , Efectos Tardíos de la Exposición Prenatal , Estimulación Magnética Transcraneal , Ácido Valproico , Animales , Ácido Valproico/farmacología , Plasticidad Neuronal/efectos de los fármacos , Ratas , Trastorno Autístico/terapia , Trastorno Autístico/inducido químicamente , Femenino , Masculino , Embarazo , Efectos Tardíos de la Exposición Prenatal/inducido químicamente , Hipocampo/metabolismo , Hipocampo/efectos de los fármacos , Ratas Sprague-Dawley , Enfermedades Neuroinflamatorias/terapia , Conducta Animal/efectos de los fármacos
18.
Chin J Nat Med ; 22(2): 127-136, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38342565

RESUMEN

Psoriasis, a prevalent inherited skin condition, involves an inflammatory response as a key pathogenic mechanism. The Optimized Yinxieling Formula (OYF), rooted in traditional Chinese medicine, is extensively utilized in clinical settings to treat psoriasis. Although previous studies have demonstrated OYF's significant anti-inflammatory effects in psoriasis, its potential molecular targets and active components remain unexplored. This study aimed to unveil the anti-psoriasis molecular targets and active components of OYF. Our findings indicated that OYF extract markedly reduced the production of several inflammatory mediators, including IL-23, nitric oxide, TNF-α, and IL-1ß, in LPS-induced RAW264.7 cells. We synthesized OYF extract-crosslinked beads to isolate pharmacological targets from RAW264.7 lysates using an affinity purification strategy, known as Target Fishing. The enriched target proteins were subsequently identified via LC-MS/MS, followed by bioinformatics analysis to map the psoriasis-associated pathway-gene network. We identified a total of 76 potential target proteins, which were highly associated with mRNA transcription mechanisms. In particular, pathway-gene network analysis revealed that the IL-23 inflammatory pathway was involved in the anti-psoriasis effect of OYF extract. We further utilized a target protein-based affinity capture strategy, combined with LC-MS and SPR analysis, to globally screen OYF's active components, focusing on the mRNA transcription regulator, fused in sarcoma (FUS). This process led to the identification of umbelliferone, vanillic acid, protocatechuic acid, gentisic acid, and echinacoside as key compounds targeting FUS to inhibit IL-23 expression. Additionally, we formulated a compound cocktail (CpdC), which significantly reduced psoriasis area and severity index (PASI) scores and the expressions of IL-23 and Ki67 in an imiquimod (IMQ)-induced psoriasis mouse model. Collectively, our study elucidates the primary molecular targets and active components of OYF, offering novel insights for psoriasis treatment.


Asunto(s)
Medicamentos Herbarios Chinos , Psoriasis , Animales , Ratones , Cromatografía Liquida , Medicamentos Herbarios Chinos/uso terapéutico , Espectrometría de Masas en Tándem , Psoriasis/tratamiento farmacológico , Psoriasis/inducido químicamente , Psoriasis/patología , Interleucina-23/efectos adversos , ARN Mensajero , Modelos Animales de Enfermedad , Ratones Endogámicos BALB C
19.
RSC Adv ; 14(2): 1488-1500, 2024 Jan 02.
Artículo en Inglés | MEDLINE | ID: mdl-38174284

RESUMEN

In this study, fcSe@TiO2 and [Cu2I2(fcSe)2]n@TiO2 nanosystems based on ferrocenylselenoether and its cuprous cluster were developed and characterized by X-ray photoelectron spectroscopy (XPS), high-resolution transmission electron microscopy (HR-TEM), energy dispersive X-ray spectroscopy (EDX), and electron paramagnetic resonance (EPR). Under optimized conditions, 0.2 g L-1 catalyst, 20 mM H2O2, and initial pH 7, good synergistic visible light photocatalytic tetracycline degradation and Cr(vi) reduction were achieved, with 92.1% of tetracycline and 64.5% of Cr(vi) removal efficiency within 30 minutes. Mechanistic studies revealed that the reactive species ˙OH, ˙O2-, and h+ were produced in both systems through the mutual promotion of Fenton reactions and photogenerated charge separation. The [Cu2I2(fcSe)2]n@TiO2 system additionally produced 1O2 from Cu+ and ˙O2-. The advantages of the developed nanosystems include an acidic surface microenvironment provided by Se⋯H+, resourceful product formation, tolerance of complex environments, and excellent adaptability in refractory N-cyclic organics.

20.
Chem Sci ; 15(11): 4135-4139, 2024 Mar 13.
Artículo en Inglés | MEDLINE | ID: mdl-38487247

RESUMEN

Na2Fe2(SO4)3 (NFS), as a promising cathode for sodium-ion batteries, is still plagued by its poor intrinsic conductivity. In general, hybridization with carbon materials is an effective strategy to improve the sodium storage performance of NFS. However, the role of carbon materials in the electrochemical performance of NFS cathode materials has not been thoroughly investigated. Herein, the effect of carbon materials was revealed by employing various conductive carbon materials as carbon sources. Among these, the NFS coated with Ketjen Black (NFS@KB) shows the largest specific surface area, which is beneficial for electrolyte penetration and rapid ionic/electronic migration, leading to improved electrochemical performance. Therefore, NFS@KB shows a long cycle life (74.6 mA h g-1 after 1000 cycles), superior rate performance (61.5 mA h g-1 at a 5.0 A g-1), and good temperature tolerance (-10 °C to 60 °C). Besides, the practicality of the NFS@KB cathode was further demonstrated by assembling a NFS@KB//hard carbon full cell. Therefore, this research indicates that a suitable carbon material for the NFS cathode can greatly activate the sodium storage performance.

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