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1.
BMC Pediatr ; 24(1): 498, 2024 Aug 02.
Artigo em Inglês | MEDLINE | ID: mdl-39095721

RESUMO

OBJECTIVE: To determine the prevalence of and risk factors for overweight and obese among Chinese children and adolescents. METHODS: This analytical cross-sectional study included 16,640 children and adolescents aged 6-18 years across four provinces of China in 2016. Physical characteristics and responses to questionnaires were analyzed. Body Mass Index (BMI) and the prevalence of overweight and obesity were calculated. RESULTS: Among children and adolescents, the overall prevalence of overweight and obesity in 2016 in four regions of China was 27.2% and 29.6%, respectively. Among different stages and sexes, the highest prevalence of obesity (15.8%) was observed in adolescent boys. From childhood to adolescence, the obesity rate among boys increased by 0.7% (from 15.1% to 15.8%), while the obesity rate among girls decreased by 0.9% (from 10.8% to 9.9%). Children and adolescents who were overweight or obese had significantly higher systolic blood pressures, larger waist circumferences and larger hip sizes than those with a normal BMI. Logistic regression analyses identified thirteen factors associated with overweight or obesity in children and adolescents. CONCLUSIONS: Our results indicate that the prevalence of overweight and obesity is high among children and adolescents, especially among male adolescents in four regions of China. A suitable intervention program should not only help parents understand the serious risk of childhood obesity but also, more importantly, help to encourage a healthy lifestyle among children and adolescents.


Assuntos
Índice de Massa Corporal , Obesidade Infantil , Humanos , Adolescente , China/epidemiologia , Estudos Transversais , Masculino , Feminino , Criança , Obesidade Infantil/epidemiologia , Prevalência , Fatores de Risco , Sobrepeso/epidemiologia , Distribuição por Sexo
2.
J Stroke Cerebrovasc Dis ; : 107872, 2024 Jul 12.
Artigo em Inglês | MEDLINE | ID: mdl-39004241

RESUMO

BACKGROUND: Birth weight has been linked with various health outcomes. The association between birth weight and cerebral aneurysm remains unknown. METHODS: The two-sample Mendelian randomization (MR) approach was used to evaluate the causal effect of birth weight on cerebral aneurysm based on genome-wide association studies (GWAS), comprising 261,932 UKB participants for birth weight and 204,060 FinnGen participants for cerebral aneurysm. The inverse variance weighted (IVW) method was used as the primary method. Alternative methods were used for comparison. Sensitivity analysis was conducted to evaluate the robustness of the results. Multivariable MR (MVMR) was further conducted to evaluate the direct effect of the birth weight on cerebral aneurysm. RESULTS: The IVW detected a causal association between higher birth weight and increased risk of cerebral aneurysm (OR = 0.521, 95% CI = 0.356 ∼ 0.763, P = 7.88 × 10-4), which was supported by alternative MR models. Sensitivity analysis did not find any evidence of heterogeneity or pleiotropy. MVMR further identified a direct effect of birth weight on cerebral aneurysm, independent of obesity-related traits or smoking. CONCLUSION: This MR study found evidence of the association between birth weight and cerebral aneurysm, providing novel insight into the etiology of cerebral aneurysm, indicating the promising role of birth weight as a marker for screening populations at higher risk of cerebral aneurysm.

3.
Sci Total Environ ; 948: 174739, 2024 Jul 14.
Artigo em Inglês | MEDLINE | ID: mdl-39009142

RESUMO

The risk assessment of an expanding array of emerging contaminants in aquatic ecosystems and the establishment of water quality criteria rely on species sensitivity distribution (SSD), necessitating ample multi-trophic toxicity data. Computational methods, such as quantitative structure-activity relationship (QSAR), enable the prediction of specific toxicity data, thus mitigating the need for costly experimental testing and exposure risk assessment. In this study, robust QSAR models for four aquatic species (Rana pipiens, Crassostrea virginica, Asellus aquaticus, and Lepomis macrochirus) were developed using leave-one-out (LOO) screening variables and the partial least squares algorithm to predict toxicity data for paraquat, bisphenol A, and carbamazepine. These predicted data can be integrated with experimental data to construct SSD models and derive hazardous concentration for 5 % of species (HC5) for the criterion maximum concentration. The chronic water quality criterion for paraquat, bisphenol A, and carbamazepine were determined at 6.7, 11.1, and 3.5 µg/L, respectively. The QSAR-SSD approach presents a viable and cost-effective method for deriving water quality criteria for other emerging contaminants.

4.
FASEB J ; 38(13): e23794, 2024 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-38967258

RESUMO

Obesity is often associated with low-grade inflammation. The incidence of obesity has increased annually worldwide, which seriously affects human health. A previous study indicated that long noncoding RNA SNHG12 was downregulated in obesity. Nevertheless, the role of SNHG12 in obesity remains to be elucidated. In this study, qRT-PCR, western blot, and ELISA were utilized to examine the gene and protein expression. Flow cytometry was employed to investigate the M2 macrophage markers. RNA pull-down assay and RIP were utilized to confirm the interactions of SNHG12, hnRNPA1, and HDAC9. Eventually, a high-fat diet-fed mouse model was established for in vivo studies. SNHG12 overexpression suppressed adipocyte inflammation and insulin resistance and promoted M2 polarization of macrophages that was caused by TNF-α treatment. SNHG12 interacted with hnRNPA1 to downregulate HDAC9 expression, which activated the Nrf2 signaling pathway. HDAC9 overexpression reversed the effect of SNHG12 overexpression on inflammatory response, insulin resistance, and M2 phenotype polarization. Overexpression of SNHG12 improved high-fat diet-fed mouse tissue inflammation. This study revealed the protective effect of SNHG12 against adipocyte inflammation and insulin resistance. This result further provides a new therapeutic target for preventing inflammation and insulin resistance in obesity.


Assuntos
Adipócitos , Dieta Hiperlipídica , Histona Desacetilases , Inflamação , Resistência à Insulina , Camundongos Endogâmicos C57BL , Fator 2 Relacionado a NF-E2 , Obesidade , RNA Longo não Codificante , Proteínas Repressoras , Animais , RNA Longo não Codificante/genética , RNA Longo não Codificante/metabolismo , Camundongos , Inflamação/metabolismo , Inflamação/genética , Adipócitos/metabolismo , Histona Desacetilases/metabolismo , Histona Desacetilases/genética , Fator 2 Relacionado a NF-E2/metabolismo , Fator 2 Relacionado a NF-E2/genética , Dieta Hiperlipídica/efeitos adversos , Masculino , Obesidade/metabolismo , Obesidade/genética , Proteínas Repressoras/metabolismo , Proteínas Repressoras/genética , Transdução de Sinais , Macrófagos/metabolismo
5.
BMC Pediatr ; 24(1): 477, 2024 Jul 26.
Artigo em Inglês | MEDLINE | ID: mdl-39060924

RESUMO

BACKGROUND: Kawasaki disease (KD) is a pyretic ailment predominantly observed in children aged below 5 years. There is currently a dearth of precise markers for timely identification of incomplete Kawasaki disease (IKD). It is imperative to develop updated, comprehensive, and evidence-based guidelines to effectively direct clinical practice. METHODS: The guideline development group comprised individuals with diverse expertise in both content and methodology and carried out an extensive exploration of the following digital repositories: CNKI, VIP, Wanfang Data, UpToDate, BMJ, Clinical Evidence, National Guideline Clearinghouse, Joanna Briggs Institute Library, Cochrane Library, and PubMed. The entire period from the establishment of these databases until January 1, 2024 was covered. To evaluate IKD, systematic reviews and randomised controlled trials were assessed using the risk of prejudice instrument specified in the Cochrane Handbook, along with the evidence robustness framework established by the GRADE group. The recommendations were formulated based on the findings, considering the evidence strength. After several iterations of expert consensus, the relevant professional committees in China endorsed the ultimate guideline. RESULTS: These guidelines address clinical questions regarding the classification and definition of KD, diagnosis of IKD, treatment during the acute phase of IKD, and follow-up of IKD. CONCLUSIONS: To provide healthcare professionals with guidance and decision-making bases for the diagnosis and treatment of IKD in China, 13 recommendations were formulated based on expert consensus and evidence of best practices.


Assuntos
Síndrome de Linfonodos Mucocutâneos , Síndrome de Linfonodos Mucocutâneos/diagnóstico , Síndrome de Linfonodos Mucocutâneos/terapia , Humanos , China , Pré-Escolar , Criança , Lactente
6.
Int J Mol Sci ; 25(14)2024 Jul 21.
Artigo em Inglês | MEDLINE | ID: mdl-39063200

RESUMO

While BCR::ABL1 tyrosine kinase inhibitors have transformed the treatment paradigm for chronic myeloid leukemia (CML), disease progression and treatment resistance due to BCR::ABL1-dependent and BCR::ABL1-independent mechanisms remain a therapeutic challenge. Natural compounds derived from plants have significantly contributed to cancer pharmacotherapy. This study investigated the efficacy of an active component of Leea indica, a local medicinal plant, in CML. Using high-performance liquid chromatography-electrospray ionization-mass spectrometry, a chemical constituent from L. indica extract was isolated and identified as gallic acid. Commercially obtained gallic acid was used as a chemical standard. Gallic acid from L. indica inhibited proliferation and induced apoptosis in CML cell lines, as did the chemical standard. Furthermore, gallic acid induced apoptosis and decreased the colony formation of primary CML CD34+ cells. The combination of isolated gallic acid or its chemical standard with BCR::ABL1 tyrosine kinase inhibitors resulted in a significantly greater inhibition of colony formation and cell growth compared to a single drug alone. Mechanistically, CML cells treated with gallic acid exhibited the disruption of multiple oncogenic pathways including ERK/MAPK, FLT3 and JAK/STAT, as well as impaired mitochondrial respiration. Rescue studies showed that gallic acid is significantly less effective in inducing apoptosis in mitochondrial respiration-deficient ρ0 cells compared to wildtype cells, suggesting that the action of gallic acid is largely through the inhibition of mitochondrial respiration. Our findings highlight the therapeutic potential of L. indica in CML and suggest that gallic acid may be a promising lead chemical constituent for further development for CML treatment.


Assuntos
Apoptose , Proliferação de Células , Proteínas de Fusão bcr-abl , Ácido Gálico , Leucemia Mielogênica Crônica BCR-ABL Positiva , Mitocôndrias , Inibidores de Proteínas Quinases , Transdução de Sinais , Ácido Gálico/farmacologia , Humanos , Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Leucemia Mielogênica Crônica BCR-ABL Positiva/metabolismo , Leucemia Mielogênica Crônica BCR-ABL Positiva/patologia , Proteínas de Fusão bcr-abl/antagonistas & inibidores , Proteínas de Fusão bcr-abl/metabolismo , Inibidores de Proteínas Quinases/farmacologia , Mitocôndrias/efeitos dos fármacos , Mitocôndrias/metabolismo , Transdução de Sinais/efeitos dos fármacos , Apoptose/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Linhagem Celular Tumoral
7.
Clin Cosmet Investig Dermatol ; 17: 1637-1648, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39045340

RESUMO

Background: Hypertrophic scars (HS) are dermal diseases characterized by excessive fibroblast proliferation and collagen deposition following burns or trauma. While Tenascin-C (TNC)'s role in promoting visceral fibrosis has been established, its impact on skin tissue fibrosis remains unclear. This study aims to investigate the effects of TNC on HS. Methods: RNA sequence and IHC techniques were used to examine the upregulation of TNC gene in human hypertrophic scar tissue compared to normal tissues. Knockdown of TNC in Human skin fibroblasts (HFF-1) cells was achieved, and expression of Col1 and Col3 was evaluated using qPCR. Sirius red collagen staining assessed impact on total collagen content and ECM deposition. Effects on cell proliferation and migration were investigated through cck-8 and cell scratch experiments. Lentivirus infection was used to knock out TNC, and resulting samples were injected into ear wound of rabbits. Effects of TNC knockout on ear scar formation were measured using digital morphology, ultrasound, SEI, H&E, and Masson trichrome methods. Results: Cell experiments: downregulation of TNC decreased Col1 and Col3 expression, leading to reduced collagen production and extracellular matrix deposition. It did not affect HFF-1 cell proliferation and migration. Animal experiments: TNC knockdown promoted wound healing and reduced collagen deposition in rabbit ears. Conclusion: This study suggests that knocking down TNC inhibits collagen formation and extracellular matrix deposition, thereby inhibiting hypertrophic scar formation. Therefore, TNC can be considered a potential biomarker for HS formation and may offer promising treatment strategies for clinical management of hypertrophic scars.

8.
Exp Biol Med (Maywood) ; 249: 10101, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39045601

RESUMO

Cerebral palsy (CP) is a prevalent motor disorder originating from early brain injury or malformation, with significant variability in its clinical presentation and etiology. Early diagnosis and personalized therapeutic interventions are hindered by the lack of reliable biomarkers. This study aims to identify potential biomarkers for cerebral palsy and develop predictive models to enhance early diagnosis and prognosis. We conducted a comprehensive bioinformatics analysis of gene expression profiles in muscle samples from CP patients to identify candidate biomarkers. Six key genes (CKMT2, TNNT2, MYH4, MYH1, GOT1, and LPL) were validated in an independent cohort, and potential biological pathways and molecular networks involved in CP pathogenesis were analyzed. The importance of processes such as functional regulation, energy metabolism, and cell signaling pathways in the muscles of CP patients was emphasized. Predictive models of muscle sample biomarkers related to CP were developed and visualized. Calibration curves and receiver operating characteristic analysis demonstrated that the predictive models exhibit high sensitivity and specificity in distinguishing individuals at risk of CP. The identified biomarkers and developed prediction models offer significant potential for early diagnosis and personalized management of CP. Future research should focus on validating these biomarkers in larger cohorts and integrating them into clinical practice to improve outcomes for individuals with CP.


Assuntos
Biomarcadores , Paralisia Cerebral , Paralisia Cerebral/genética , Paralisia Cerebral/diagnóstico , Paralisia Cerebral/metabolismo , Humanos , Biomarcadores/metabolismo , Masculino , Feminino , Biologia Computacional/métodos , Perfilação da Expressão Gênica , Pré-Escolar , Criança , Prognóstico
9.
Clin Res Hepatol Gastroenterol ; 48(7): 102415, 2024 Jul 16.
Artigo em Inglês | MEDLINE | ID: mdl-39018766

RESUMO

BACKGROUND: Hepatocellular carcinoma (HCC) is the most common primary malignant tumor of the liver. Currently, the treatments of HCC are limited to surgical resection and liver transplantation, and there is no effective systemic therapy. OBJECTIVES: To investigate the regulatory mechanism of zinc finger protein 300 (ZNF300) in hepatocellular carcinoma (HCC). METHODS: The expressions of ZNF300 in HCC tissue samples and HCC cell lines (Hep3B, Huh7, SNU-387) were detected. ZNF300 overexpression vector (ZNF300) or shRNAZNF300 (shZNF300) was transfected into HCC cells to increase or inhibit ZNF300 expression. 5-Ethynyl-2'-deoxyuridine assay (EdU), cell counting kit-8 assay (CCK-8) and transwell invasion assay were conducted to evaluate the proliferation, viability, migration, and invasion of HCC cells respectively. The expressions of tumor migration and invasion related proteins (matrix metallopeptidase 2 (MMP-2) and MMP-9), c-MYC, and MAPK/ERK signaling pathway related molecules (p-ERK1/2, ERK1/2, p-P38, P38) were determined by western blotting. Hep3B cells transfected with shZNF300 were subcutaneously injected into nude mice to perform tumor xenograft experiment. Tumor volume and weight were measured. RESULTS: ZNF300 was upregulated in HCC tissues and cells. The expressions of MMP-2 and MMP-9 were increased in HCC cells after transfecting with ZNF300 but reduced in HCC cells transfected with shZNF300. Downregulation of ZNF300 inhibited HCC cell proliferation, migration, and invasion, while overexpression of ZNF300 showed the opposite effects. Moreover, the expressions of c-MYC and MAPK/ERK signaling pathway related molecules were increased after overexpression of ZNF300 but reduced after downregulating ZNF300. In tumor xenograft experiment, downregulation of ZNF300 reduced tumor volume and weight. CONCLUSION: The present study proved that downregulation of ZNF300 inhibited HCC growth by reducing c-MYC expression and MAPK/ERK signaling pathway.

10.
J Cell Mol Med ; 28(12): e18440, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38890792

RESUMO

Hepatitis B virus (HBV) damages liver cells through abnormal immune responses. Mitochondrial metabolism is necessary for effector functions of white blood cells (WBCs). The aim was to investigate the altered counts and mitochondrial mass (MM) of WBCs by two novel indicators of mitochondrial mass, MM and percentage of low mitochondrial membrane potential, MMPlow%, due to chronic HBV infection. The counts of lymphocytes, neutrophils and monocytes in the HBV infection group were in decline, especially for lymphocyte (p = 0.034) and monocyte counts (p = 0.003). The degraded MM (p = 0.003) and MMPlow% (p = 0.002) of lymphocytes and MM (p = 0.005) of monocytes suggested mitochondrial dysfunction of WBCs. HBV DNA within WBCs showed an extensive effect on mitochondria metabolic potential of lymphocytes, neutrophils and monocytes indicated by MM; hepatitis B e antigen was associated with instant mitochondrial energy supply indicated by MMPlow% of neutrophils; hepatitis B surface antigen, antiviral therapy by nucleos(t)ide analogues and prolonged infection were also vital factors contributing to WBC alterations. Moreover, degraded neutrophils and monocytes could be used to monitor immune responses reflecting chronic liver fibrosis and inflammatory damage. In conclusion, MM combined with cell counts of WBCs could profoundly reflect WBC alterations for monitoring chronic HBV infection. Moreover, HBV DNA within WBCs may be a vital factor in injuring mitochondria metabolic potential.


Assuntos
Vírus da Hepatite B , Hepatite B Crônica , Mitocôndrias , Humanos , Hepatite B Crônica/virologia , Hepatite B Crônica/patologia , Masculino , Feminino , Vírus da Hepatite B/patogenicidade , Adulto , Mitocôndrias/metabolismo , Pessoa de Meia-Idade , Contagem de Leucócitos , Leucócitos/metabolismo , DNA Viral/sangue , Potencial da Membrana Mitocondrial , Monócitos/metabolismo , Monócitos/imunologia , Monócitos/virologia , Monócitos/patologia , Neutrófilos/metabolismo , Neutrófilos/imunologia
11.
J Colloid Interface Sci ; 674: 1-8, 2024 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-38908061

RESUMO

O3 phase layered oxides are highly attractive cathode materials for sodium-ion batteries because of their high capacity and decent initial Coulombic efficiency. However, their rate capability and long cycling life are unsatisfactory due to the narrow Na+ transfer channel and irreversible phase transitions of O3 phase during sodiation/desodiation process. Constructing O3/P2 multiphase structures has been proven to be an effective strategy to overcome these challenges. In this study, we synthesized bi-phasic structured O3/P2 Na(Ni2/9Fe1/3Cu1/9Mn1/3)1-xMnxO2 (x = 0.01, 0.02, 0.03, 0.04, 0.05) materials through Mn doping during sodiation process. Benefiting from surface P2 phase layer with the enhanced Na+ transfer dynamics and high structural stability, the Na(Ni2/9Fe1/3Cu1/9Mn1/3)0.98Mn0.02O2 (NFCM-M2) cathode delivers a reversible capacity of 139.1 mA h g-1 at 0.1 C, and retains 71.4 % of its original capacity after 300 cycles at 1 C. Our work provides useful guidance for designing multiphase cathodes and offers new insights into the structure-performance correlation for sodium-ion cathode materials.

12.
J Orthop Surg Res ; 19(1): 377, 2024 Jun 27.
Artigo em Inglês | MEDLINE | ID: mdl-38926735

RESUMO

BACKGROUND: Achilles tendon is vital in maintaining the stability and function of ankle joint. It is quite difficult to achieve the structural and functional repair of Achilles tendon in tissue engineering. METHODS: A tissue-engineered tendon micro-tissue was prepared using rat tail tendon extracellular matrix (TECM) combined with rat adipose stem cells (ADSCs) to repair Achilles tendon injuries. The TECM was prepared by repeated freezing and thawing. The in vitro characteristics of TECM and its effect on ADSCs proliferation were detected. This tissue-engineered tendon micro-tissue for Achilles tendon repair in vivo was evaluated based on general characteristics, gait analysis, ultrasound findings, histological analysis, and biomechanical testing. RESULTS: The results showed that the TECM scaffold had good biocompatibility for ADSCs. At 2 weeks post-surgery, collagen types I and III and tenomodulin expression were higher, and vascular endothelial growth factor expression was lower in the micro-tissue group than other groups. At 4 and 8 weeks post-surgery, the results of histological analysis and ultrasound findings showed that the repaired tendon tissue was smooth and lustrous, and was arranged regularly and evenly in the micro-tissue group. Gait analysis confirmed that better motor function recovery was noted in micro-tissue group than other groups. In addition, the mechanical properties of the repaired tendon tissue in micro-tissue group were better than other groups. CONCLUSION: Tissue-engineered tendon micro-tissue fabricated by TECM and ADSCs has good biocompatibility and can promote structural and functional repair of tendon in vivo. This composite biomaterial has broad application prospects in tissue engineering.


Assuntos
Tendão do Calcâneo , Matriz Extracelular , Ratos Sprague-Dawley , Regeneração , Traumatismos dos Tendões , Engenharia Tecidual , Alicerces Teciduais , Animais , Engenharia Tecidual/métodos , Tendão do Calcâneo/lesões , Tendão do Calcâneo/fisiologia , Traumatismos dos Tendões/terapia , Regeneração/fisiologia , Ratos , Masculino , Tecido Adiposo/citologia
13.
Materials (Basel) ; 17(12)2024 Jun 10.
Artigo em Inglês | MEDLINE | ID: mdl-38930202

RESUMO

In industrial production, the deformation inhomogeneity after metal forging affects the mechanical properties of various parts of the forgings. The question of whether the organization and mechanical properties of ß-titanium alloy can be improved by controlling the amount of forging deformation needs to be answered. Therefore, in this paper, a new sub-stable ß-Ti alloy TB 18 (Ti-5.3Cr-4.9Mo4.9V-4.3Al-0.9Nb-0.3Fe) was subjected to three different levels of deformation, as well as solid solution-aging treatments, and the variation rules of microstructure and mechanical properties were investigated. During the solid solution process, the texture evolution pattern of the TB18 alloy at low deformation (20-40%) is mainly rotational cubic texture deviated into α-fiber texture; at high deformation (60%), the main components of the deformed texture are α-fiber texture with a specific orientation of (114)<113-3>. After subsequent static recrystallization, the α-fiber texture is deviated to an α*-fiber texture, while the specific orientation (114)<113-3> can still be inherited as a major component of the recrystallized texture. The plasticity of the alloy in the normal direction (ND) after the solid solution is influenced by the existence of the <110>//ND texture, and the plasticity of the alloy in the ND direction after aging is determined by a combination of the volume fraction of the <110>//ND texture in the matrix phase and the volume fraction of [112-0]α//ND in the α phase. The results show that it is feasible to change the characteristics of the recrystallization texture of TB18 by controlling the deformation level of hot forging, thus realizing the modulation of the mechanical properties.

14.
Neurochem Res ; 2024 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-38837094

RESUMO

Epilepsy is a common neurological disorder, and the exploration of potential therapeutic drugs for its treatment is still ongoing. Vitamin D has emerged as a promising treatment due to its potential neuroprotective effects and anti-epileptic properties. This study aimed to investigate the effects of vitamin D on epilepsy and neuroinflammation in juvenile mice using network pharmacology and molecular docking, with a focus on the mammalian target of rapamycin (mTOR) signaling pathway. Experimental mouse models of epilepsy were established through intraperitoneal injection of pilocarpine, and in vitro injury models of hippocampal neurons were induced by glutamate (Glu) stimulation. The anti-epileptic effects of vitamin D were evaluated both in vivo and in vitro. Network pharmacology and molecular docking analysis were used to identify potential targets and regulatory pathways of vitamin D in epilepsy. The involvement of the mTOR signaling pathway in the regulation of mouse epilepsy by vitamin D was validated using rapamycin (RAPA). The levels of inflammatory cytokines (TNF-α, IL-1ß, and IL-6) were assessed by enzyme-linked immunosorbent assay (ELISA). Gene and protein expressions were detected by quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot, respectively. The terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end-labeling (TUNEL) staining was used to analyze the apoptosis of hippocampal neurons. In in vivo experiments, vitamin D reduced the Racine scores of epileptic mice, prolonged the latency of epilepsy, and inhibited the production of TNF-α, IL-1ß, and IL-6 in the hippocampus. Furthermore, network pharmacology analysis identified RAF1 as a potential target of vitamin D in epilepsy, which was further confirmed by molecular docking analysis. Additionally, the mTOR signaling pathway was found to be involved in the regulation of mouse epilepsy by vitamin D. In in vitro experiments, Glu stimulation upregulated the expressions of RAF1 and LC3II/LC3I, inhibited mTOR phosphorylation, and induced neuronal apoptosis. Mechanistically, vitamin D activated the mTOR signaling pathway and alleviated mouse epilepsy via RAF1, while the use of the pathway inhibitor RAPA reversed this effect. Vitamin D alleviated epilepsy symptoms and neuroinflammation in juvenile mice by activating the mTOR signaling pathway via RAF1. These findings provided new insights into the molecular mechanisms underlying the anti-epileptic effects of vitamin D and further supported its use as an adjunctive therapy for existing anti-epileptic drugs.

15.
QJM ; 2024 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-38814809
16.
Cell Rep Med ; 5(5): 101573, 2024 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-38776874

RESUMO

Epstein-Barr virus (EBV) is linked to various malignancies and autoimmune diseases, posing a significant global health challenge due to the lack of specific treatments or vaccines. Despite its crucial role in EBV infection in B cells, the mechanisms of the glycoprotein gp42 remain elusive. In this study, we construct an antibody phage library from 100 EBV-positive individuals, leading to the identification of two human monoclonal antibodies, 2B7 and 2C1. These antibodies effectively neutralize EBV infection in vitro and in vivo while preserving gp42's interaction with the human leukocyte antigen class II (HLA-II) receptor. Structural analysis unveils their distinct binding epitopes on gp42, different from the HLA-II binding site. Furthermore, both 2B7 and 2C1 demonstrate potent neutralization of EBV infection in HLA-II-positive epithelial cells, expanding our understanding of gp42's role. Overall, this study introduces two human anti-gp42 antibodies with potential implications for developing EBV vaccines targeting gp42 epitopes, addressing a critical gap in EBV research.


Assuntos
Anticorpos Monoclonais , Epitopos , Infecções por Vírus Epstein-Barr , Herpesvirus Humano 4 , Humanos , Herpesvirus Humano 4/imunologia , Infecções por Vírus Epstein-Barr/imunologia , Infecções por Vírus Epstein-Barr/virologia , Anticorpos Monoclonais/imunologia , Epitopos/imunologia , Animais , Anticorpos Neutralizantes/imunologia , Anticorpos Antivirais/imunologia , Camundongos , Antígenos de Histocompatibilidade Classe II/imunologia , Antígenos de Histocompatibilidade Classe II/metabolismo , Proteínas Virais/imunologia , Linfócitos B/imunologia
17.
Chemistry ; 30(39): e202401377, 2024 Jul 11.
Artigo em Inglês | MEDLINE | ID: mdl-38738789

RESUMO

(Z)-alkenes are useful synthons but thermodynamically less stable than their (E)-isomers and typically more difficult to prepare. The synthesis of 1,4-hetero-bifunctionalized (Z)-alkenes is particularly challenging due to the inherent regio- and stereoselectivity issues. Herein we demonstrate a general, chemoselective and direct synthesis of (Z)-2-butene-1,4-diol monoesters. The protocol operates within a Pd-catalyzed decarboxylative acyloxylation regime involving vinyl ethylene carbonates (VECs) and various carboxylic acids as the reaction partners under mild and operationally attractive conditions. The newly developed process allows access to a structurally diverse pool of (Z)-2-butene-1,4-diol monoesters in good yields and with excellent regio- and stereoselectivity. Various synthetic transformations of the obtained (Z)-2-butene-1,4-diol monoesters demonstrate how these synthons are of great use to rapidly diversify the portfolio of these formal desymmetrized (Z)-alkenes.

18.
Int J Neurosci ; : 1-15, 2024 May 13.
Artigo em Inglês | MEDLINE | ID: mdl-38738478

RESUMO

BACKGROUND: Sciatica is a phrase used to describe radiating leg discomfort. The most common cause is lumbar disc herniation (LDH), which is considered to start in the nucleus pulposus. Advancements in lipidomics and metabolomics have unveiled the complex role of fatty acid metabolism (FAM) in both healthy and pathological states. However, the specific roles of fatty acid metabolism-related genes (FAMGs) in shaping therapeutic approaches, especially in LDH, remain largely unexplored and are a subject of ongoing research. METHODS: The junction of the weighted correlation network analysis (WGCNA) test with 6 FAMGs enabled the finding of FAMGs. Gene set variation analysis (GSVA) was used to identify the possible biological activities and pathways of FAMGs. LASSO was used to determine diagnostic effectiveness of the four FAMGs in diagnosing LDH. GSE124272, GSE147383, GSE150408, and GSE153761 were utilized to confirm the levels of expression of four FAMGs. RESULTS: Four FAMGs were discovered [Acyl-CoA Thioesterase 4 (ACOT4), Cytochrome P450 Family 4 Subfamily A Member 11 (CYP4A11), Acyl-CoA Dehydrogenase Long Chain (ACADL), Enoyl-CoA Hydratase and 3-Hydroxyacyl CoA Dehydrogenase (EHHADH)] For biological function analysis, mhc class ib receptor activity, response to thyroxine, response to l phenylalanine derivative were emphasized. CONCLUSIONS: FAMGs can help with prognosis and immunology, and provide evidence for fatty acid metabolism-related targeted therapeutics. In LDH, FAMGs and their interactions with immune cells might be therapeutic targets.

19.
Int Wound J ; 21(5): e14934, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38783559

RESUMO

Preservation and restoration of hand function after burn injuries are challenging yet imperative. This study aimed to assess the curative effect of a composite skin graft over an acellular dermal matrix (ADM) and a thick split-thickness skin graft (STSG) for treating deep burns on the hand. Patients who met the inclusion criteria at the First Affiliated Hospital of Wenzhou Medical University between September 2011 and January 2020 were retrospectively identified from the operative register. We investigated patient characteristics, time from operation to the start of active motion exercise, take rates of skin graft 7 days post-surgery, donor site recovery, complications and days to complete healing. Patients were followed up for 12 months to evaluate scar quality using the Vancouver Scar Scale (VSS) and hand function through total active motion (TAM) and the Jebsen-Taylor Hand Function Test (JTHFT). A total of 38 patients (52 hands) who received thin STSG on top of the ADM or thick STSG were included. The location of the donor sites was significantly different between Group A (thick STSG) and Group B (thin STSG + ADM) (p = 0.03). There were no statistical differences in age, gender, underlying disease, cause of burn, burn area, dominant hand, patients with two hands operated on and time from burn to surgery between the two groups (p > 0.05). The time from operation to the start of active motion exercise, take rates of skin graft 7 days post-surgery and days to complete healing were not significantly different between Group A and Group B (p > 0.05). The rate of donor sites requiring skin grafting was lower in Group B than in Group A (22.2% vs. 100%, p < 0.001). There were no statistically significant differences in complications between the groups (p = 0.12). Moreover, 12 months postoperatively, the pliability subscore in the VSS was significantly lower in Group A than in Group B (p = 0.01). However, there were no statistically significant differences in vascularity (p = 0.42), pigmentation (p = 0.31) and height subscores (p = 0.13). The TAM and JTHFT results revealed no statistically significant differences between the two groups (p = 0.22 and 0.06, respectively). The ADM combined with thin STSG is a valuable approach for treating deep and extensive hand burns with low donor site morbidity. It has a good appearance and function in patients with hand burns, especially in patients with limited donor sites.


Assuntos
Derme Acelular , Queimaduras , Traumatismos da Mão , Transplante de Pele , Humanos , Queimaduras/cirurgia , Masculino , Feminino , Transplante de Pele/métodos , Adulto , Estudos Retrospectivos , Pessoa de Meia-Idade , Traumatismos da Mão/cirurgia , Adulto Jovem , Cicatrização/fisiologia , Cicatriz , Resultado do Tratamento
20.
Front Immunol ; 15: 1381472, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38726008

RESUMO

X-linked lymphoproliferative disease (XLP) is a rare genetic disorder characterized by immune dysregulation. The three most common clinical phenotypes are EBV-associated infectious mononucleosis (FIM), abnormal gammaglobulinemia, and lymphoma. We present a rare case of XLP1 with neurovasculitis, which is non-EBV-related and involves multiple systems, a condition rarely seen in children. The patient initially presented with an unsteady gait, which progressively evolved into language and consciousness disorders. Additionally, CT scans revealed multiple nodules in the lungs. Subsequent genetic testing and brain tissue biopsy confirmed the diagnosis: XLP1-related cerebral vasculitis and cerebral hemorrhage. Tragically, during the diagnostic process, the child experienced a sudden cerebral hemorrhage and herniation, ultimately resulting in fatality. This case offers a comprehensive insight into XLP1-related cerebral vasculitis and cerebral hemorrhage, underscoring the significance of early diagnosis and prompt treatment, while also imparting valuable clinical experience and lessons to the medical community.


Assuntos
Hemorragia Cerebral , Transtornos Linfoproliferativos , Vasculite do Sistema Nervoso Central , Humanos , Vasculite do Sistema Nervoso Central/diagnóstico , Vasculite do Sistema Nervoso Central/etiologia , Masculino , Hemorragia Cerebral/etiologia , Hemorragia Cerebral/diagnóstico , Transtornos Linfoproliferativos/diagnóstico , Transtornos Linfoproliferativos/complicações , Transtornos Linfoproliferativos/genética , Evolução Fatal
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