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1.
PLoS Med ; 21(7): e1004419, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38980837

RESUMO

BACKGROUND: The association between years of non-diabetes status after diagnosis of impaired glucose tolerance (IGT) and the risk of long-term death and cardiovascular outcomes needed to be clarified. METHODS AND FINDINGS: In this post hoc analysis, we included 540 individuals with IGT who participated in the original Da Qing Diabetes Prevention Study (DQDPS). In the DQDPS, all participants were diagnosed with IGT by a 75 g oral glucose tolerance test and randomized to intervention or control groups with a 6-year lifestyle intervention trial. After the completion of the trial, death, cardiovascular events, and microvascular complications were monitored over a 30-year follow-up. In this post hoc analysis, the Cox analysis assessed the extended risk of these outcomes in individuals who either remained non-diabetes status or progressed to diabetes at the end of 2, 4, and 6 years after diagnosis of IGT. In all participants, the difference in the cumulative incidence rate of the outcomes between the diabetes and non-diabetes group gradually increased over 30 years. Compared with the diabetes group, a significantly lower risk of all-cause death (hazard ratio [HR]: 0.74; 95% confidence interval [CI]: 0.57 to 0.97, p = 0.026), cardiovascular events (HR: 0.63; 95% CI: 0.49 to 0.82, p < 0.001), and microvascular complications (HR: 0.62; 95% CI: 0.45 to 0.86, p = 0.004) first emerged in individuals who remained non-diabetes at the 4 years visit, whereas the significant risk reduction in cardiovascular death was first observed at the end of 6 years (HR: 0.56; 95% CI: 0.39 to 0.81, p = 0.002) after adjustment for age, sex, smoking status, BMI, systolic blood pressure, blood glucose, total cholesterol, intervention, and medications (including insulin plus oral hypoglycaemics, antihypertensives, and lipid-lowering agents). The results in the original intervention group alone were similar to the whole group. The main limitations of our study are the limited number of participants and the sole ethnicity of the Chinese population. CONCLUSIONS: In this study, we observed that maintaining several years of non-diabetes status after IGT diagnosis was associated with a significant reduction in long-term risk of death and vascular complications, and for most of these outcomes, maintaining at least 4 years of non-diabetes status may be needed to achieve a significant risk reduction.


Assuntos
Intolerância à Glucose , Humanos , Masculino , Intolerância à Glucose/diagnóstico , Intolerância à Glucose/complicações , Feminino , Pessoa de Meia-Idade , Teste de Tolerância a Glucose , China/epidemiologia , Idoso , Doenças Cardiovasculares/mortalidade , Doenças Cardiovasculares/prevenção & controle , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/epidemiologia , Fatores de Risco , Glicemia/metabolismo , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/diagnóstico , Adulto
2.
Front Plant Sci ; 15: 1359315, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38988632

RESUMO

The gene encoding 9-cis-epoxycarotenoid dioxygenase 3 (NCED3) functions in abscisic acid (ABA) biosynthesis, plant growth and development, and tolerance to adverse temperatures, drought and saline conditions. In this study, three rice lines were used to explore the function of OsNCED3, these included an OsNCED3-overexpressing line (OsNCED3-OE), a knockdown line (osnced3-RNAi) and wild-type rice (WT). These rice lines were infested with the brown plant hopper (BPH; Nilaparvata lugens) and examined for physiological and biochemical changes, hormone content, and defense gene expression. The results showed that OsNCED3 activated rice defense mechanisms, which led to an increased defense enzyme activity of superoxide dismutase, peroxidase, and polyphenol oxidase. The overexpression of OsNCED3 decreased the number of planthoppers and reduced oviposition and BPH hatching rates. Furthermore, the overexpression of OsNCED3 increased the concentrations of jasmonic acid, jasmonyl-isoleucine and ABA relative to WT rice and the osnced3-RNAi line. These results indicate that OsNCED3 improved the stress tolerance in rice and support a role for both jasmonates and ABA as defense compounds in the rice-BPH interaction.

3.
Transl Oncol ; 47: 101950, 2024 Jul 03.
Artigo em Inglês | MEDLINE | ID: mdl-38964032

RESUMO

BACKGROUND: Pulmonary sarcomatoid carcinoma (PSC) is a highly invasive pulmonary malignancy with an extremely poor prognosis. The results of previous studies suggest that ubiquitin-specific peptidase 9X (USP9X) contributes to the progression of numerous types of cancer. Nevertheless, there is little knowledge about the molecular mechanisms and functions of USP9X in the metastasis of PSC. METHODS: Immunohistochemistry and western blotting were used to detect USP9X expression levels in PSC tissues and cells. Wound healing, transwell, enzyme-linked immunosorbent assay (ELISA), tube formation, and aortic ring assays were used to examine the function and mechanism of USP9X in the metastasis of PSC. RESULTS: Expression of USP9X was markedly decreased and significantly correlated with metastasis and prognosis of patients with PSC. Then we revealed that USP9X protein levels were negatively associated with the levels of epithelial-mesenchymal transition (EMT) markers and the migration of PSC cells. It was confirmed that USP9X in PSC cells reduced VEGF secretion and inhibited tubule formation of human umbilical vein endothelial cells (HUVEC) in vitro. USP9X was detected to downregulate MMP9. Meanwhile, MMP9 was positively related to EMT, angiogenesis and was negatively related to immune infiltration in the public databases. USP9X was significantly negatively associated with the expression of MMP9, EMT markers, CD31, and positively associated with CD4, and CD8 in PSC tissues. CONCLUSION: The present study reveals the vital role of USP9X in regulating EMT, angiogenesis and immune infiltration and inhibiting metastasis of PSC via downregulating MMP9, which provides a new effective therapeutic target for PSC.

5.
Front Immunol ; 15: 1358602, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38863699

RESUMO

Hepatocellular carcinoma (HCC) ranks as the sixth most common malignancy globally, with the majority of patients presenting at the initial diagnosis with locally advanced or metastatic disease, precluding the opportunity for curative surgical intervention. With the exploration and advancement of locoregional treatments, novel molecular-targeted therapies, anti-angiogenic agents, and immunomodulatory drugs, the management of HCC has seen an increase in objective response rates and prolonged duration of response significantly enhancing the potential for conversion to resectable disease in intermediate and advanced-stage unresectable HCC. Herein, we present a case of Barcelona Clinic Liver Cancer stage B unresectable HCC, where after two courses of treatment with transarterial chemoembolization combined with atezolizumab plus bevacizumab significant tumor reduction was achieved. Per Response Evaluation Criteria in Solid Tumors 1.1, partial response culminated in successful curative surgical resection. No drug-related adverse reactions occurred during hospitalization, and there has been no recurrence during the 11-month postoperative follow-up. For patients with Barcelona Clinic Liver Cancer stage B (intermediate-stage) unresectable HCC, the transarterial chemoembolization combined with atezolizumab plus bevacizumab regimen may offer improved therapeutic outcomes leading to a higher success rate of conversion therapy and, thus, improved survival.


Assuntos
Anticorpos Monoclonais Humanizados , Protocolos de Quimioterapia Combinada Antineoplásica , Bevacizumab , Carcinoma Hepatocelular , Quimioembolização Terapêutica , Neoplasias Hepáticas , Humanos , Carcinoma Hepatocelular/terapia , Carcinoma Hepatocelular/patologia , Neoplasias Hepáticas/terapia , Neoplasias Hepáticas/patologia , Neoplasias Hepáticas/tratamento farmacológico , Bevacizumab/administração & dosagem , Bevacizumab/uso terapêutico , Quimioembolização Terapêutica/métodos , Anticorpos Monoclonais Humanizados/administração & dosagem , Anticorpos Monoclonais Humanizados/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Masculino , Estadiamento de Neoplasias , Pessoa de Meia-Idade , Resultado do Tratamento , Terapia Combinada
6.
Artigo em Inglês | MEDLINE | ID: mdl-38896281

RESUMO

PURPOSE: To investigate the factors associated with and impact on the femtosecond-assisted (FS-assisted) limbal relaxing incision (LRI) combined with the steep-meridian tri-planar clear corneal incision (TCCI) to reduce astigmatism in patients undergoing Implantable Collamer Lens (ICL) surgery. METHODS: Retrospective case series. The study reviewed patients with ICL surgery combined with FS-assisted LRIs paired with steep-meridian TCCIs. Correlation analysis examined the relationship between independent variables, including preoperative characteristics (intraocular pressure, corneal thickness, axial length, et al.), TCCI, and LRI surgical parameters. The predictors of surgically induced astigmatism (SIA) were determined using individual-level analysis and accounting for inter-eye correlation with the generalized estimating equation (GEE). RESULTS: The study enrolled 69 patients, with 114 eyes (55 right and 59 left). The mean spherical equivalent (SEQ) was - 10.29 ± 2.99D and - 9.99 ± 2.72D for the right and left eye, respectively, while the mean preoperative corneal astigmatism was - 1.54 ± 0.47D and - 1.54 ± 0.46D for the right and left eyes, respectively. After 12 months of follow-up, univariate analysis revealed significant correlations between SIA and intraocular pressure (IOP), astigmatism type, TCCI position (degree), peripheral corneal thickness (PCT), LRI arc incision diameter, post depth (%), and angle, respectively (P = 0.046, 0.016, 0.039, 0.040, 0.009, 0.000, 0.000). Multivariate analysis using GEE demonstrated that axial length (AL), astigmatism type, LRI arc diameter, and angle were independent predictors of SIA (P = 0.000, 0.005, 0.029, 0.000). CONCLUSIONS: The type of astigmatism and axial length were independent factors that affected SIA when modifying the LRI arc diameter and angle through FS-assisted steep-meridian TCCI paired with LRI in ICL surgery.

7.
J Cancer Res Clin Oncol ; 150(5): 283, 2024 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-38806870

RESUMO

OBJECTIVE: The aim of this study is to assess the clinical efficacy of a 5 mg dosage of olanzapine in preventing chemotherapy-induced nausea and vomiting (CINV) associated with moderately emetogenic chemotherapy (MEC) among female patients diagnosed with gastrointestinal tract tumors. METHODS: Patients undergoing the oxaliplatin/irinotecan chemotherapy regimen were enrolled in this prospective controlled study. The olanzapine group received a 5 mg dosage of olanzapine along with palonosetron and dexamethasone, while the control group received a standard two-combination regimen consisting of dexamethasone and palonosetron. The primary endpoints included the total protection (TP) rates for the entire age group and the subgroup aged 60 years and above. Secondary endpoints encompassed the total protection rates during the acute and delayed phases within the two age brackets, as well as the total control (TC) rates and complete remission (CR) rates across all three phases (total, acute, and delayed). Additionally, the study involved the assessment of quality of life and the collection of adverse events associated with the interventions. RESULTS: 1) Regarding the primary endpoint, the total phase TP rates within both the entire age group and the age group exceeding 60 years demonstrated superiority in the olanzapine group when compared to the control group (66.7% vs 37.25%, P = 0.003; 68.8% vs 44.4%, P = 0.044). 2) In terms of secondary endpoints, the olanzapine group exhibited superior acute phase TP rates in both age brackets when compared to the control group (P < 0.05). The olanzapine group also demonstrated higher delayed-phase TP rates, TC rates across all three phases, and CR rates within the two age brackets, although the differences were not statistically significant (P > 0.05). Furthermore, the quality of life in the olanzapine group surpassed that of the control group for both age brackets (P < 0.05), characterized by enhanced appetite and a higher incidence of drowsiness in the patients treated with olanzapine when compared to those in the control group (P < 0.05). CONCLUSION: Olanzapine can enhance CINV induced by MEC regimen in female patients across all age groups, including the elderly, and therefore improve the quality of life for these patients. CLINICAL TRIAL REGISTRATION: https://www.chictr.org.cn/index.html , identifier: ChiCTR20000368269, 25/08/2020.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica , Irinotecano , Náusea , Olanzapina , Oxaliplatina , Vômito , Humanos , Olanzapina/administração & dosagem , Olanzapina/uso terapêutico , Olanzapina/efeitos adversos , Feminino , Pessoa de Meia-Idade , Náusea/induzido quimicamente , Náusea/prevenção & controle , Vômito/induzido quimicamente , Vômito/prevenção & controle , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Estudos Prospectivos , Oxaliplatina/efeitos adversos , Oxaliplatina/administração & dosagem , Irinotecano/efeitos adversos , Irinotecano/administração & dosagem , Idoso , Adulto , Antieméticos/administração & dosagem , Antieméticos/uso terapêutico , Neoplasias Gastrointestinais/tratamento farmacológico , Palonossetrom/administração & dosagem , Palonossetrom/uso terapêutico , Qualidade de Vida , Dexametasona/administração & dosagem , Dexametasona/uso terapêutico
8.
Behav Brain Res ; 469: 115047, 2024 Jul 09.
Artigo em Inglês | MEDLINE | ID: mdl-38759799

RESUMO

Hyperalgesia occurs in the orofacial region of rats when estrogen levels are low, although the specific mechanism needs to be investigated further. Furthermore, oxidative stress plays an important role in the transmission of pain signals. This study aimed to explore the role of oxidative stress in orofacial hyperalgesia under low estrogen conditions. We firstly found an imbalance between oxidative and antioxidant capacity within the spinal trigeminal subnucleus caudalis (SP5C) of rats after ovariectomy (OVX), resulting in oxidative stress and then a decrease in the orofacial pain threshold. To investigate the mechanism by which oxidative stress occurs, we used virus as a tool to silence or overexpress the excitatory amino acid transporter 3 (EAAT3) gene. Further investigation revealed that the regulation of glutathione (GSH) and reactive oxygen species (ROS) can be achieved by regulating EAAT3, which in turn impacts the occurrence of oxidative stress. In summary, our findings suggest that reduced expression of EAAT3 within the SP5C of rats in the low estrogen state may decrease GSH content and increase ROS levels, resulting in oxidative stress and ultimately lead to orofacial hyperalgesia. This suggests that antioxidants could be a potential therapeutic direction for orofacial hyperalgesia under low estrogen conditions, though more research is needed to understand its mechanism.


Assuntos
Estrogênios , Transportador 3 de Aminoácido Excitatório , Dor Facial , Glutationa , Hiperalgesia , Ovariectomia , Estresse Oxidativo , Ratos Sprague-Dawley , Espécies Reativas de Oxigênio , Animais , Hiperalgesia/metabolismo , Estresse Oxidativo/efeitos dos fármacos , Estresse Oxidativo/fisiologia , Feminino , Estrogênios/metabolismo , Estrogênios/farmacologia , Dor Facial/metabolismo , Glutationa/metabolismo , Ratos , Espécies Reativas de Oxigênio/metabolismo , Transportador 3 de Aminoácido Excitatório/metabolismo , Limiar da Dor/efeitos dos fármacos , Limiar da Dor/fisiologia , Núcleo Inferior Caudal do Nervo Trigêmeo/metabolismo , Núcleo Inferior Caudal do Nervo Trigêmeo/efeitos dos fármacos , Antioxidantes/farmacologia , Antioxidantes/metabolismo
9.
Cardiorenal Med ; 14(1): 334-349, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38801815

RESUMO

INTRODUCTION: Large prospective trials have demonstrated that finerenone could reduce the risk of cardiovascular death and progression of renal failure among patients with chronic kidney disease associated heart failure and/or type 2 diabetes mellitus (T2DM). The aim of this study was to explore the molecular mechanism of finerenone in the treatment of cardiorenal diseases through network pharmacology. METHODS: The STITH, SwissTargetPrediction, PharmMapper, DrugBank, and ChEMBL databases were used to screen the targets of finerenone. The disease-related targets were retrieved from the DisGeNET, GeneCards, CTD, OMIM, and MalaCards databases. The protein-protein interaction (PPI) network was conducted with STRING database and Cytoscape software. The clusterProfiler R package was used to perform Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis. The interactions of key targets and finerenone were analyzed by molecular docking in Autodock software. Diabetes mellitus was induced by intraperitoneal injection of streptozotocin. Histopathology of myocardial and renal tissues was observed by hematoxylin-eosin (HE) staining, and detection of protein expressions was conducted using Western blotting. RESULTS: A total of 111 potential cardiorenal targets of finerenone were identified. The main mechanisms of action may be associated with lipids and atherosclerosis, fluid shear stress and atherosclerosis, AGE-RAGE signaling pathway in diabetic complications, and diabetic cardiomyopathy. The hub targets demonstrated by the PPI network were CASP3, ALB, MMP9, EGFR, ANXA5, IGF1, SRC, TNFRSF1A, IL2, and PPARG, and the docking results suggested that finerenone could bind to these targets with high affinities. HE staining revealed the cardiorenal protection of finerenone on diabetic mice. In addition, the protein expressions of CASP3 and EGFR were increased while ALB was decreased in myocardial and renal tissues in diabetic mice compared with control mice, which were reversed by finerenone. CONCLUSION: This study suggested that finerenone exerts cardiorenal benefits through multiple targets and pathways.


Assuntos
Diabetes Mellitus Experimental , Simulação de Acoplamento Molecular , Naftiridinas , Farmacologia em Rede , Naftiridinas/farmacologia , Animais , Camundongos , Diabetes Mellitus Experimental/complicações , Mapas de Interação de Proteínas , Masculino , Receptores ErbB/metabolismo , Receptores ErbB/efeitos dos fármacos , Humanos , Rim/efeitos dos fármacos , Rim/metabolismo , Rim/patologia , Camundongos Endogâmicos C57BL , Antagonistas de Receptores de Mineralocorticoides/farmacologia , Antagonistas de Receptores de Mineralocorticoides/uso terapêutico , Insuficiência Cardíaca/tratamento farmacológico
10.
Hum Cell ; 37(4): 1056-1069, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38744794

RESUMO

Epithelial mesenchymal transition (EMT) occurring in retinal pigment epithelial cells (RPE) is a crucial mechanism that contributes to the development of age-related macular degeneration (AMD), a pivotal factor leading to permanent vision impairment. Long non-coding RNAs (lncRNAs) have emerged as critical regulators orchestrating EMT in RPE cells. In this study, we explored the function of the lncRNA CYTOR (cytoskeleton regulator RNA) in EMT of RPE cells and its underlying mechanisms. Through weighted correlation network analysis, we identified CYTOR as an EMT-related lncRNA associated with AMD. Experimental validation revealed that CYTOR orchestrates TGF-ß1-induced EMT, as well as proliferation and migration of ARPE-19 cells. Further investigation demonstrated the involvement of CYTOR in regulating the WNT5A/NFAT1 pathway and NFAT1 intranuclear translocation in the ARPE-19 cell EMT model. Mechanistically, CHIP, EMSA and dual luciferase reporter assays confirmed NFAT1's direct binding to CYTOR's promoter, promoting transcription. Reciprocally, CYTOR overexpression promoted NFAT1 expression, while NFAT1 overexpression increased CYTOR transcription. These findings highlight a mutual promotion between CYTOR and NFAT1, forming a positive feedback loop that triggers the EMT phenotype in ARPE-19 cells. These discoveries provide valuable insights into the molecular mechanisms of EMT and its association with AMD, offering potential avenues for targeted therapies in EMT-related conditions, including AMD.


Assuntos
Transição Epitelial-Mesenquimal , Retroalimentação Fisiológica , Degeneração Macular , Fatores de Transcrição NFATC , RNA Longo não Codificante , Epitélio Pigmentado da Retina , Transição Epitelial-Mesenquimal/genética , Humanos , Epitélio Pigmentado da Retina/metabolismo , Epitélio Pigmentado da Retina/citologia , Fatores de Transcrição NFATC/metabolismo , Fatores de Transcrição NFATC/genética , RNA Longo não Codificante/fisiologia , RNA Longo não Codificante/genética , RNA Longo não Codificante/metabolismo , Degeneração Macular/genética , Degeneração Macular/metabolismo , Degeneração Macular/patologia , Degeneração Macular/etiologia , Expressão Gênica/genética , Proliferação de Células/genética , Movimento Celular/genética , Fator de Crescimento Transformador beta1/metabolismo , Transdução de Sinais/genética , Transdução de Sinais/fisiologia , Células Epiteliais/metabolismo , Linhagem Celular , Células Cultivadas
11.
Ear Nose Throat J ; : 1455613241258648, 2024 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-38804648

RESUMO

Objective: The objective of this study was to create and verify a machine learning-driven predictive model to forecast the likelihood of facial nerve impairment in patients with parotid tumors following surgery. Methods: We retrospectively collected data from patients with parotid tumors between 2013 and 2023 to develop a prediction model for postoperative facial nerve dysfunction using 5 ML techniques: Logistic Regression (Logit), Random Forest (RF), XGBoost (XGB), Artificial Neural Network (ANN), and Support Vector Machine (SVM). Predictor variables were screened using binomial-LASSO regression. Results: The study had a total of 403 participants, out of which 56 individuals encountered facial nerve damage after the surgery. By employing binomial-LASSO regression, we have successfully identified 8 crucial predictive variables: tumor kind, tumor pain, surgeon's experience, tumor volume, basophil percentage, red blood cell count, partial thromboplastin time, and prothrombin time. The models utilizing ANN and Logit achieved higher area under the curve (AUC) values, namely 0.829, which was significantly better than the SVM model that had an AUC of 0.724. There were no noticeable disparities in the AUC values between the ANN and Logit models, as well as between these models and other techniques like RF and XGB. Conclusion: Using machine learning, our prediction model accurately predicts the likelihood that patients with parotid tumors may experience facial nerve damage following surgery. By using this model, doctors can assess patients' risks more accurately before to surgery, and it may also help optimize postoperative treatment techniques. It is anticipated that this tool would enhance patients' quality of life and therapeutic outcomes.

12.
Environ Sci Pollut Res Int ; 31(24): 35553-35566, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38733444

RESUMO

Volatile organic compounds (VOCs) frequently pose a threat to the biosphere, impacting ecosystems, flora, fauna, and the surrounding environment. Industrial emissions of VOCs often include the presence of water vapor, which, in turn, diminishes the adsorption capacity and efficacy of adsorbents. This occurs due to the competitive adsorption of water vapor, which competes with target pollutants for adsorption sites on the adsorbent material. In this study, hydrophobic activated carbons (BMIMPF6-AC (L), BMIMPF6-AC (g), and BMIMPF6-AC-H) were successfully prepared using 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF6) to adsorb toluene under humidity environment. The adsorption performance and mechanism of the resulting ionic liquid-modified activated carbon for toluene in a high-humidity environment were evaluated to explore the potential application of ionic liquids as hydrophobic modifiers. The results indicated that BMIMPF6-AC-H exhibited superior hydrophobicity. The toluene adsorption capacity of BMIMPF6-AC-H was 1.53 times higher than that of original activated carbon, while the adsorption capacity for water vapor was only 37.30% of it at 27 °C and 77% RH. The Y-N model well-fitted the dynamic adsorption experiments. To elucidate the microscopic mechanism of hydrophobic modification, the Independent Gradient Model (IGM) method was employed to characterize the intermolecular interactions between BMIMPF6 and toluene. Overall, this study introduces a new modifier for hydrophobic modification of activated carbon, which could enhance the efficiency of activated carbon in treating industrial VOCs.


Assuntos
Umidade , Líquidos Iônicos , Tolueno , Compostos Orgânicos Voláteis , Líquidos Iônicos/química , Adsorção , Tolueno/química , Compostos Orgânicos Voláteis/química , Carvão Vegetal/química , Poluentes Atmosféricos/química , Interações Hidrofóbicas e Hidrofílicas , Imidazóis/química
13.
J Nanobiotechnology ; 22(1): 299, 2024 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-38812031

RESUMO

BACKGROUND: Discrepancies in the utilization of reactive oxygen species (ROS) between cancer cells and their normal counterparts constitute a pivotal juncture for the precise treatment of cancer, delineating a noteworthy trajectory in the field of targeted therapies. This phenomenon is particularly conspicuous in the domain of nano-drug precision treatment. Despite substantial strides in employing nanoparticles to disrupt ROS for cancer therapy, current strategies continue to grapple with challenges pertaining to efficacy and specificity. One of the primary hurdles lies in the elevated levels of intracellular glutathione (GSH). Presently, predominant methods to mitigate intracellular GSH involve inhibiting its synthesis or promoting GSH efflux. However, a conspicuous gap remains in the absence of a strategy capable of directly and efficiently clearing GSH. METHODS: We initially elucidated the chemical mechanism underpinning oridonin, a diminutive pharmacological agent demonstrated to perturb reactive oxygen species, through its covalent interaction with glutathione. Subsequently, we employed the incorporation of maleimide-liposomes, renowned for their capacity to disrupt the ROS delivery system, to ameliorate the drug's water solubility and pharmacokinetics, thereby enhancing its ROS-disruptive efficacy. In a pursuit to further refine the targeting for acute myeloid leukemia (AML), we harnessed the maleic imide and thiol reaction mechanism, facilitating the coupling of Toll-like receptor 2 (TLR2) peptides to the liposomes' surface via maleic imide. This strategic approach offers a novel method for the precise removal of GSH, and its enhancement endeavors are directed towards fortifying the precision and efficacy of the drug's impact on AML targets. RESULTS: We demonstrated that this peptide-liposome-small molecule machinery targets AML and consequently induces cell apoptosis both in vitro and in vivo through three disparate mechanisms: (I) Oridonin, as a Michael acceptor molecule, inhibits GSH function through covalent bonding, triggering an initial imbalance of oxidative stress. (II) Maleimide further induces GSH exhaustion, aggravating redox imbalance as a complementary augment with oridonin. (III) Peptide targets TLR2, enhances the directivity and enrichment of oridonin within AML cells. CONCLUSION: The rationally designed nanocomplex provides a ROS drug enhancement and targeted delivery platform, representing a potential solution by disrupting redox balance for AML therapy.


Assuntos
Diterpenos do Tipo Caurano , Glutationa , Leucemia Mieloide Aguda , Lipossomos , Espécies Reativas de Oxigênio , Diterpenos do Tipo Caurano/química , Diterpenos do Tipo Caurano/farmacologia , Glutationa/metabolismo , Glutationa/química , Lipossomos/química , Leucemia Mieloide Aguda/tratamento farmacológico , Leucemia Mieloide Aguda/metabolismo , Humanos , Espécies Reativas de Oxigênio/metabolismo , Animais , Camundongos , Linhagem Celular Tumoral , Receptor 2 Toll-Like/metabolismo , Antineoplásicos/farmacologia , Antineoplásicos/química , Apoptose/efeitos dos fármacos
14.
Oncol Rep ; 52(1)2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38757398

RESUMO

Following the publication of the above paper, it was drawn to the Editors' attention by a concerned reader that the data obtained from sphere­forming assay experiments shown in Figs. 4C­F and 8B and C, and western blotting data in Figs. 4A and 8A, were strikingly similar to data appearing in different form in other articles by different authors from different research institutes that had already been published, one of which has been retracted. Moreover, a pair of data panels comparing between Fig. 4E and 8C were partly overlapping, such that these data appear to have been derived from the same original source. Owing to the fact that the contentious data in the above article had already been published elsewhere prior to its submission to Oncology Reports, the Editor has decided that this paper should be retracted from the Journal. The authors were asked for an explanation to account for these concerns, but the Editorial Office did not receive a reply. The Editor apologizes to the readership for any inconvenience caused. [Oncology Reports 35: 1204­1212, 2016; DOI: 10.3892/or.2015.4437].

15.
Heliyon ; 10(8): e29869, 2024 Apr 30.
Artigo em Inglês | MEDLINE | ID: mdl-38681588

RESUMO

PANoptosis is a type of programmed cell death (PCD) characterised by apoptosis, necroptosis and pyroptosis. Long non-coding ribonucleic acids (lncRNAs) are participating in the malignant behaviour of tumours regulated by PCD. Nevertheless, the function of PANoptosis-associated lncRNAs in lung adenocarcinoma remains to be investigated. In this work, a PANoptosis-related lncRNA signature (PRLSig) was developed based on the least absolute shrinkage and selection operator algorithm. The stability and fitness of PRLSig were confirmed by systematic evaluation of Kaplan-Meier, Cox analysis algorithm, receiver operating characteristic analysis, stratification analysis. In addition, ESTIMATE, single sample gene set enrichment analysis, immune checkpoints and the cancer immunome database confirmed the predictive value of the PRLSig in immune microenvironment and helped to identify populations for which immunotherapy is advantageous. The present research provides novel insights to facilitate risk stratification and optimise personalised treatment for LUAD.

16.
Aging (Albany NY) ; 16(6): 5288-5310, 2024 03 08.
Artigo em Inglês | MEDLINE | ID: mdl-38461439

RESUMO

INTRODUCTION: Regulatory T cells (Tregs) play important roles in tumor immunosuppression and immune escape. The aim of the present study was to construct a novel Tregs-associated biomarker for the prediction of tumour immune microenvironment (TIME), clinical outcomes, and individualised treatment in hepatocellular carcinoma (HCC). METHODS: Single-cell sequencing data were obtained from the three independent cohorts. Cox and LASSO regression were utilised to develop the Tregs Related Scoring System (TRSSys). GSE140520, ICGC-LIRI and CHCC cohorts were used for the validation of TRSSys. Kaplan-Meier, ROC, and Cox regression were utilised for the evaluation of TRSSys. The ESTIMATE, TIMER 2.0, and ssGSEA algorithm were utilised to determine the value of TRSSys in predicting the TIME. GSVA, GO, KEGG, and TMB analyses were used for mechanistic exploration. Finally, the value of TRSSys in predicting drug sensitivity was evaluated based on the oncoPredict algorithm. RESULTS: Comprehensive validation showed that TRSSys had good prognostic predictive efficacy and applicability. Additionally, ssGSEA, TIMER and ESTIMATE algorithm suggested that TRSSys could help to distinguish different TIME subtypes and determine the beneficiary population of immunotherapy. Finally, the oncoPredict algorithm suggests that TRSSys provides a basis for individualised treatment. CONCLUSIONS: TRSSys constructed in the current study is a novel HCC prognostic prediction biomarker with good predictive efficacy and stability. Additionally, risk stratification based on TRSSys can help to identify the TIME landscape subtypes and provide a basis for individualized treatment options.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Humanos , Carcinoma Hepatocelular/terapia , Linfócitos T Reguladores , Neoplasias Hepáticas/terapia , Prognóstico , Microambiente Tumoral , Biomarcadores
17.
Front Pharmacol ; 15: 1346905, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38405666

RESUMO

With the advancement of tumour-targeted therapy technology, the survival of cancer patients has continued to increase, and cardiovascular events have gradually become an important cause of death in cancer patients. This phenomenon occurs due to adverse cardiovascular reactions caused by the cardiovascular toxicity of antitumour therapy. Moreover, the increase in the proportion of elderly patients with cancer and cardiovascular diseases is due to the extension of life expectancy. Hypertension is the most common cardiovascular side effect of small molecule tyrosine kinase inhibitors (TKIs). The increase in blood pressure induced by TKIs and subsequent cardiovascular complications and events affect the survival and quality of life of patients and partly offset the benefits of antitumour therapy. Many studies have confirmed that in the pathogenesis of hypertension, arterioles and capillary thinness are involved in its occurrence and development. Our previous findings showing that apatinib causes microcirculation rarefaction of the superior mesenteric artery and impaired microvascular growth may inspire new therapeutic strategies for treating hypertension. Thus, by restoring microvascular development and branching patterns, total peripheral resistance and blood pressure are reduced. Therefore, exploring the key molecular targets of TKIs that inhibit the expression of angiogenic factors and elucidating the specific molecular mechanism involved are key scientific avenues for effectively promoting endothelial cell angiogenesis and achieving accurate repair of microcirculation injury in hypertension patients.

18.
Animal Model Exp Med ; 2024 Jan 18.
Artigo em Inglês | MEDLINE | ID: mdl-38238876

RESUMO

BACKGROUND: Globally, breast cancer constitutes the predominant malignancy in women. Abnormal regulation of epigenetic factors plays a key role in the development of tumors. Anti-apoptosis is a characteristic of tumor cells. Therefore, exploring and identifying relevant epigenetic factors that regulate the apoptosis of tumor cells is the foundation for clarifying the pathogenesis of tumors and achieving precision antitumor therapy. METHOD: This study focused on exploring the epigenetic mechanism of FOXK1 in the development of estrogen receptor-positive (ER+ ) breast cancer. We used overexpressing FLAG-FOXK1 MCF-7 cells to perform silver staining mass spectrometry analysis and conducted Co-IP experiments to verify the interactions. ChIP-seq was conducted on MCF-7 cells to examine FOXK1's binding across the genome and its transcriptional target sites. To validate the ChIP-seq results, qChIP, western blotting, and quantitative polymerase chain reaction (qPCR) were performed. Through TUNEL assay, cell counting assay, colony formation assay, and the mouse xenograft models, the effect of FOXK1 on breast cancer progression was detected. Finally, by analyzing online databases, the correlation between FOXK1 and the survival of breast cancer patients was examined. RESULTS: FOXK1 interacts with the REST/CoREST transcriptional corepression complex to transcriptionally inhibit target genes representing the apoptotic pathway. Abnormally high expression of FOXK1 prevents the apoptosis of ER+ breast cancer cells in vitro and promotes ER+ breast tumor progression in vivo. Furthermore, the expression of FOXK1 is negatively correlated with the survival of ER+ breast cancer patients. CONCLUSION: FOXK1 promotes ER+ breast carcinogenesis through anti-apoptosis and acts as a potential target for ER+ breast cancer treatment.

19.
Acad Radiol ; 31(3): 909-920, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37778902

RESUMO

RATIONALE AND OBJECTIVES: This study aimed to investigate the value of multiplexed sensitivity encoding with reversed polarity gradients in improving the quality of diffusion-weighted imaging (DWI) images of the prostate and the diagnostic efficacy of prostate cancer. MATERIALS AND METHODS: Seventy-three patients with prostate disease underwent multiplexed sensitivity encoding with reversed polarity gradients (RPG-MUSE), multiplexed sensitivity encoding (MUSE), and single-shot echo-planar imaging (ssEPI) DWI. Three radiologists performed a qualitative image analysis of the three DWI sequences. Qualitative image analysis included artifact minimization, anatomical detail, and sharpness of prostate edges. Two radiologists measured the signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), geometric distortion rate, and the apparent diffusion coefficient (ADC) values of the prostate disease tissue. Two radiologists jointly performed Prostate Imaging Reporting and Data System scoring of prostate lesions and compared the diagnostic efficacy of the three DWI sequences for prostate cancer. RESULTS: There was good agreement among radiologists in the evaluation and measurement of the three DWI sequence images (intraclass correlation coefficient >0.75, P < 0.05). The RPG-MUSE DWI images were rated higher than those of MUSE and ssEPI in terms of artifact minimization, anatomical details, and sharpness of prostate edges (P < 0.05). The SNR and CNR of the RPG-MUSE DWI images were higher than those of MUSE and ssEPI (P < 0.05), and the geometric distortion rate was lower than that of the other two sequences (P < 0.05). There were no statistical differences in ADC values between the three DWI sequences (P > 0.05). The diagnostic efficacy of RPG-MUSE and MUSE DWI was higher than that of ssEPI (P < 0.017). CONCLUSION: RPG-MUSE can reduce the artifacts and geometric distortion in DWI images of the prostate, improve the SNR and CNR of the images, improve the clarity of anatomical details and boundaries without affecting the measurement of ADC values, has the potential to improve the diagnostic efficacy of prostate lesions, and facilitates the clear display and accurate assessment of prostate lesions.


Assuntos
Alprostadil , Neoplasias da Próstata , Masculino , Humanos , Imagem de Difusão por Ressonância Magnética/métodos , Neoplasias da Próstata/patologia , Próstata/diagnóstico por imagem , Próstata/patologia , Imagem Ecoplanar/métodos , Reprodutibilidade dos Testes
20.
Front Neurol ; 14: 1268627, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38073656

RESUMO

Background: This study aimed to identify the risk factors and construct a prediction model for the prognosis of intracerebral hemorrhage (ICH) at discharge, 3 months, and 12 months. Methods: A total of 269 patients with ICH were retrospectively enrolled at our hospital between January 2014 and August 2016. The prognosis of ICH was assessed using the modified Rankin Scale (mRS); an mRS score > 2 was considered a poor outcome. The primary endpoint was the 3-month mRS, whereas the secondary endpoints included the mRS scores at discharge and 12 months, and mortality. Results: The Glasgow Coma Scale (GCS), National Institutes of Health (NIH) stroke scale, International Normalized Ratio (INR), blood urea nitrogen (BUN), epencephalon hemorrhage, and primary hematoma volume were significantly associated with a poor mRS score at 3 months. The predictive value of the prediction model based on these factors for a poor mRS score was 87.8%. Furthermore, a poor mRS score at discharge was affected by the GCS, NIH stroke scale, and primary hematoma volume; the constructed model based on these factors had a predictive value of 87.6%. In addition, the GCS, NIH stroke scale, and surgery were significantly related to a poor mRS score at 12 months; the predictive value of the constructed model based on the aforementioned factors for a poor mRS score was 86.5%. Finally, primary hematoma volume is significantly associated with the risk of 12 months mortality. Conclusions: The study identified risk factors and constructed a prediction model for poor mRS scores and mortality at discharge, 3 and 12 months in patients with ICH. The prediction models for mRS scores showed a relatively high predictive performance.

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