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1.
Anal Chim Acta ; 1325: 343115, 2024 Oct 09.
Artículo en Inglés | MEDLINE | ID: mdl-39244303

RESUMEN

BACKGROUND: Excessive use of veterinary drugs causes severely environmental pollution and agricultural pollution, and poses great threat to human health. A simple method for the rapid, highly sensitive, and on-site monitoring of veterinary drug residues in complex samples remains lacking. RESULTS: In this study, we propose a catalytically enhanced colorimetric lateral flow immunoassay (LFA) based on a novel core-satellite-structured magnetic nanozyme (Fe-Au@Pt) that can simultaneously and quantitatively detect three common veterinary drugs, namely, gentamicin (GM), streptomycin (STR), and clenbuterol (CLE), within a short testing time (<30 min). The Fe-Au@Pt nanozyme was simply prepared through the self-assembly of numerous Au@Pt nanoparticles on a large Fe3O4 core via electrostatic adhesion, which exhibited the advantages of high peroxidase-like activity, strong magnetic responsiveness, and multiple catalytic sites. Under the dual-signal amplification effect of magnetic enrichment and catalytic enhancement, the proposed nanozyme-LFA allowed the multiplex detection of STR, CLE, and GM with detection limits of 10.1, 6.3, and 1.1 pg/mL, respectively. SIGNIFICANCE: The developed Fe-Au@Pt-LFA achieves direct, simultaneous, and accurate detection of three target drugs in food samples (honey, milk, and pork). The proposed assay shows great potential for application in the real-time monitoring of small-molecule pollutants in complex environment.


Asunto(s)
Colorimetría , Residuos de Medicamentos , Oro , Colorimetría/métodos , Inmunoensayo/métodos , Oro/química , Residuos de Medicamentos/análisis , Límite de Detección , Animales , Platino (Metal)/química , Nanopartículas de Magnetita/química , Leche/química , Nanopartículas del Metal/química , Contaminación de Alimentos/análisis
2.
Artículo en Inglés | MEDLINE | ID: mdl-39254261

RESUMEN

Targeted proteomics has been playing an increasingly important role in hypothesis-driven protein research and clinical biomarker discovery. We previously created a workflow, Tomahto, to enable real-time targeted pathway proteomics assays using two-dimensional multiplexing technology. Coupled with the TMT 11-plex reagent, hundreds of proteins of interest from up to 11 samples can be targeted and accurately quantified in a single-shot experiment with remarkable sensitivity. However, room remains to further improve the sensitivity, accuracy, and throughput, especially for targeted studies demanding a high peptide-level success rate. Here, bearing in mind the goal to improve peptide-level targeting, we introduce several new functionalities in Tomahto, featuring the integration of gas-phase fractionation using the FAIMS device, an accompanying software program (TomahtoPrimer) to customize fragmentation for each peptide target, and support for higher multiplexing capacity with the latest TMTpro reagent. We demonstrate that adding these features to the Tomahto platform significantly improves overall success rate from 89% to 98% in a single 60 min targeted assay of 290 peptides across human cell lines, while boosting quantitative accuracy via reducing TMT reporter ion interference.

3.
Biotechnol Prog ; : e3502, 2024 Sep 05.
Artículo en Inglés | MEDLINE | ID: mdl-39238226

RESUMEN

The immobilization of free enzymes is crucial for enhancing their stability in different environments, enabling reusability, and expanding their applications. However, the development of a straightforward immobilization method that offers stability, high efficiency, biocompatibility, and modifiability remains a significant challenge. Silk fibroin (SF) is a good carrier for immobilized enzymes and drugs. Here, we employed urease as a model enzyme and utilized our developed technology called unidirectional nanopore dehydration (UND) to efficiently dehydrate a regenerated SF solution containing urease in a single step, resulting in the preparation of a highly functionalized SF membrane immobilizing urease (UI-SFM). The preparation process of UI-SFM is based on an all-water system, which is mild, green and able to efficiently and stably immobilize urease in the membranes, maintaining 92.7% and 82.8% relative enzyme activity after 30 days of storage in dry and hydrated states, respectively. Additionally, we performed additional post-treatments, including stretching and cross-linking with polyethylene glycol diglycidyl ether (PEGDE), to obtain two more robust immobilized urease membranes (UI-SFMs and UI-SFMc). The thermal and storage stability of these two membranes were significantly improved, and the recovery ratio of enzyme activity reached more than 90%. After 10 repetitions of the enzymatic reaction, the activity recovery of UI-SFMs and UI-SFMc remained at 92% and 88%, respectively. The results suggest that both UND-based and post-treatment-developed membranes exhibit excellent urease immobilization capabilities. Furthermore, the enzyme immobilization method offers a straightforward and versatile approach for efficient and stable enzyme immobilization, while its flexible modifiability caters to diverse application requirements.

4.
Front Pharmacol ; 15: 1433587, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39239660

RESUMEN

Background: Beinaglutide, whose active ingredient is rhGLP-1, has been widely used as a pharmacological therapy for T2DM. We explored the safety and pharmacokinetics of beinaglutide in Chinese overweight/obese volunteers to lay a foundation for clinical applications of beinaglutide as an anti-obesity drug. Methods: An open-label, single center, multiple ascending dose phase I clinical trial was conducted in 16 overweight/obese Chinese volunteers. The plasma concentrations of beinaglutide were determined by a validated ELISA method and the pharmacokinetic parameters were estimated via non-compartmental analysis methods. Adverse events were also recorded. Results: Beinaglutide sequentially multiple dosing (three times daily) at different doses were generally well tolerated, without serious AEs leading to discontinuation of the trial. After multiple subcutaneous injections of different doses (0.1, 0.14 and 0.2 mg), the average blood concentration of beinaglutide with or without baseline correction showed a similar trend among different dose groups on different study days. After reaching the peak concentration around 15 min, it began to decrease, and the median of Tmax and Tmax,adj was 10-15 min. The exposure in vivo increased in proportion to the dosage increment, demonstrating linear pharmacokinetic characteristics. There were no statistically significant differences in the main PK parameters and no accumulation of beinaglutide after multiple dosing. After multiple subcutaneous injections, a gender difference was observed, while no differences in BMI were found under the grouping conditions. Conclusion: The safety profile and pharmacokinetic properties support further development and clinical applications of beinaglutide as an anti-obesity drug. Systematic Review Registration: [https://register.clinicaltrials.gov/prs/app/action/SelectProtocol?sid=S000BPEI&selectaction=Edit&uid=U00050YQ&ts=2&cx=wy0ioj].

5.
CNS Neurosci Ther ; 30(9): e70024, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39218798

RESUMEN

AIMS: Type 2 diabetes mellitus (T2DM) is related to an increased risk of postoperative cognitive dysfunction (POCD), which may be caused by neuronal hyperexcitability. Astrocyte glutamate transporter 1 (GLT-1) plays a crucial role in regulating neuron excitability. We investigated if T2DM would magnify the increased neuronal excitability induced by anesthesia/surgery (A/S) and lead to POCD in young adult mice, and if so, determined whether these effects were associated with GLT-1 expression. METHODS: T2DM model was induced by high fat diet (HFD) and injecting STZ. Then, we evaluated the spatial learning and memory of T2DM mice after A/S with the novel object recognition test (NORT) and object location test (OLT). Western blotting and immunofluorescence were used to analyze the expression levels of GLT-1 and neuronal excitability. Oxidative stress reaction and neuronal apoptosis were detected with SOD2 expression, MMP level, and Tunel staining. Hippocampal functional synaptic plasticity was assessed with long-term potentiation (LTP). In the intervention study, we overexpressed hippocampal astrocyte GLT-1 in GFAP-Cre mice. Besides, AAV-Camkllα-hM4Di-mCherry was injected to inhibit neuronal hyperexcitability in CA1 region. RESULTS: Our study found T2DM but not A/S reduced GLT-1 expression in hippocampal astrocytes. Interestingly, GLT-1 deficiency alone couldn't lead to cognitive decline, but the downregulation of GLT-1 in T2DM mice obviously enhanced increased hippocampal glutamatergic neuron excitability induced by A/S. The hyperexcitability caused neuronal apoptosis and cognitive impairment. Overexpression of GLT-1 rescued postoperative cognitive dysfunction, glutamatergic neuron hyperexcitability, oxidative stress reaction, and apoptosis in hippocampus. Moreover, chemogenetic inhibition of hippocampal glutamatergic neurons reduced oxidative stress and apoptosis and alleviated postoperative cognitive dysfunction. CONCLUSIONS: These findings suggest that the adult mice with type 2 diabetes are at an increased risk of developing POCD, perhaps due to the downregulation of GLT-1 in hippocampal astrocytes, which enhances increased glutamatergic neuron excitability induced by A/S and leads to oxidative stress reaction, and neuronal apoptosis.


Asunto(s)
Astrocitos , Diabetes Mellitus Tipo 2 , Regulación hacia Abajo , Transportador 2 de Aminoácidos Excitadores , Hipocampo , Ratones Endogámicos C57BL , Complicaciones Cognitivas Postoperatorias , Animales , Transportador 2 de Aminoácidos Excitadores/metabolismo , Transportador 2 de Aminoácidos Excitadores/biosíntesis , Transportador 2 de Aminoácidos Excitadores/genética , Astrocitos/metabolismo , Complicaciones Cognitivas Postoperatorias/etiología , Complicaciones Cognitivas Postoperatorias/metabolismo , Hipocampo/metabolismo , Ratones , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/metabolismo , Masculino , Diabetes Mellitus Experimental/complicaciones , Diabetes Mellitus Experimental/metabolismo , Dieta Alta en Grasa/efectos adversos , Ratones Transgénicos
6.
Aging Dis ; 2024 Aug 21.
Artículo en Inglés | MEDLINE | ID: mdl-39226164

RESUMEN

Alzheimer's Disease (AD) is the most prevalent, costly, and fatal neurodegenerative disorder of this century. Two hallmark features of AD are the anomalous cleavage of amyloid precursor protein (APP), which leads to the accumulation of amyloid-beta (Aß), and the hyperphosphorylation of tau protein. Despite extensive research efforts, the pathology and pathogenesis of AD remain elusive. Recent investigations have highlighted the close association between antisense long non-coding RNAs (AS-lncRNAs) and various biological and functional aspects of AD. However, many AS-lncRNAs implicated in AD have not yet been comprehensively compiled and discussed. This paper reviews the role of AS-lncRNAs in neurodegenerative diseases, outlines their association with AD, and offers novel insights into the potential applications of antisense RNAs in the diagnosis and treatment of AD.

7.
Chem Biodivers ; : e202401078, 2024 Sep 02.
Artículo en Inglés | MEDLINE | ID: mdl-39223082

RESUMEN

Coronary heart disease, hypertension, myocarditis, and valvular disease cause myocardial fibrosis, leading to heart enlargement, heart failure, heart rate failure, arrhythmia, and premature ventricular beat, even defibrillation can increase the risk of sudden death. Although cardiac fibrosis is common and widespread, there are still no effective drugs to provide adequate clinical intervention for cardiac fibrosis. In this review article, we classify the compounds for treating cardiac fibrosis into natural products, synthetic compounds, and patent drugs according to their sources. Additionally, the structures, activities and signaling pathways of these compounds are discussed. This review provides insight and could provide a reference for the design of new anti-cardiac fibrosis compounds and the new use of older drugs.

8.
Curr Microbiol ; 81(11): 358, 2024 Sep 16.
Artículo en Inglés | MEDLINE | ID: mdl-39285060

RESUMEN

Antagonistic bacterial strains from Bacillus spp. have been widely studied and utilized in the biocontrol of phytopathogens and the promotion of plant growth, but their impacts on the rhizosphere microecology when applied to crop plants are unclear. Herein, the effects of applying the antagonistic bacterium Bacillus subtilis S1 as a biofertilizer on the rhizosphere microecology of cucumbers were investigated. In a pot experiment on cucumber seedlings inoculated with S1, 3124 bacterial operational taxonomic units (OTUs) were obtained from the rhizosphere soils using high-throughput sequencing of 16S rRNA gene amplicons, and the most abundant phylum was Proteobacteria that accounted for 49.48% in the bacterial community. S1 treatment significantly reduced the abundances of soil bacterial taxa during a period of approximately 30 days but did not affect bacterial diversity in the rhizosphere soils of cucumbers. The enzymatic activities of soil nitrite reductase (S-Nir) and dehydrogenase (S-DHA) were significantly increased after S1 fertilization. However, the activities of soil urease (S-UE), cellulase (S-CL), and sucrase (S-SC) were significantly reduced compared to the control group. Additionally, the ammonium- and nitrate-nitrogen contents of S1-treated soil samples were significantly lower than those of the control group. S1 fertilization reshaped the rhizosphere soil bacterial community of cucumber plants. The S-CL activity and nitrate-nitrogen content in rhizosphere soil affected by S1 inoculation play important roles in altering the abundance of rhizosphere soil microbiota.


Asunto(s)
Bacillus subtilis , Bacterias , Cucumis sativus , Nitrógeno , Rizosfera , Microbiología del Suelo , Cucumis sativus/microbiología , Bacillus subtilis/genética , Bacillus subtilis/metabolismo , Nitrógeno/metabolismo , Bacterias/clasificación , Bacterias/genética , Bacterias/metabolismo , Bacterias/aislamiento & purificación , ARN Ribosómico 16S/genética , Fertilizantes/análisis , Suelo/química , Microbiota , Filogenia
9.
Am J Transl Res ; 16(8): 3907-3914, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39262722

RESUMEN

OBJECTIVE: To evaluate the effect of dental operative microscopes on precision in minimally invasive dental restoration procedures. METHODS: This retrospective analysis included patients who underwent minimally invasive dental restoration procedure at Nanjing Stomatological Hospital from March 2018 to December 2019. Patients were categorized into two groups, an observation group treated with microscope-guided provisional restorations, and a control group treated using conventional methods. Clinical indices, including implant survival rates over five years, were compared between the groups. Multivariate analysis was employed to identify independent risk factors for implant failure. RESULTS: After treatment the observation group exhibited significantly lower labial vertical marginal discrepancies and absolute marginal discrepancies, as well as improved labial gingival indices and periodontal probing depths compared to the control group (all P<0.001). Additionally, the observation group scored significantly higher in efficiency, accuracy, and overall quality of tooth preparation (all P<0.001). Clinicians using microscopes demonstrated significantly lower mean Rapid Upper Limb Assessment scores, indicating reduced ergonomic strain (P<0.001). Higher age, worn tooth defects, poor oral hygiene, and non-use of a microscope were identified as independent risk factors for implant failure at the five-year mark. CONCLUSION: Dental operative microscopes significantly enhance the precision, efficiency, and ergonomic comfort in minimally invasive dental restorations for both clinicians and patients. Widespread adoption of this technology is strongly recommended.

10.
Theranostics ; 14(13): 5281-5302, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39267790

RESUMEN

Background: Insufficiently managed incisional (INC) pain severely affects patients' life quality and rehabilitation after a major operation. However, mechanisms underlying INC pain still remain poorly understood. Methods: A mouse model of INC pain was established by skin plus deep muscle incision. Biochemistry assay, in vivo reactive oxygen species (ROS) imaging, Ca2+ imaging combined with retrograde labelling, neuron tracing and nocifensive behavior test, etc. were utilized for mechanism investigation. Results: We found pro-nociceptive cytokine interleukin -33 (IL-33) ranked among top up-regulated cytokines in incised tissues of INC pain model mice. IL-33 was predominantly expressed in keratinocytes around the incisional area. Neutralization of IL-33 or its receptor suppression of tumorigenicity 2 protein (ST2) or genetic deletion of St2 gene (St2 -/-) remarkably ameliorated mechanical allodynia and improved gait impairments of model mice. IL-33 contributes to INC pain by recruiting macrophages, which subsequently release ROS in incised tissues via ST2-dependent mechanism. Transfer of excessive macrophages enhanced oxidative injury and reproduced mechanical allodynia in St2 -/- mice upon tissue incision. Overproduced ROS subsequently activated functionally up-regulated transient receptor potential ankyrin subtype-1 (TRPA1) channel innervating the incisional site to produce mechanical allodynia. Neither deleting St2 nor attenuating ROS affected wound healing of model mice. Conclusions: Our work uncovered a previously unrecognized contribution of IL-33/ST2 signaling in mediating mechanical allodynia and gait impairment of a mouse model of INC pain. Targeting IL-33/ST2 signaling could be a novel therapeutic approach for INC pain management.


Asunto(s)
Modelos Animales de Enfermedad , Hiperalgesia , Proteína 1 Similar al Receptor de Interleucina-1 , Interleucina-33 , Macrófagos , Ratones Noqueados , Especies Reactivas de Oxígeno , Canal Catiónico TRPA1 , Animales , Interleucina-33/metabolismo , Interleucina-33/genética , Proteína 1 Similar al Receptor de Interleucina-1/metabolismo , Proteína 1 Similar al Receptor de Interleucina-1/genética , Especies Reactivas de Oxígeno/metabolismo , Ratones , Canal Catiónico TRPA1/metabolismo , Canal Catiónico TRPA1/genética , Macrófagos/metabolismo , Hiperalgesia/metabolismo , Piel/metabolismo , Masculino , Ratones Endogámicos C57BL , Queratinocitos/metabolismo , Dolor/metabolismo
11.
Sci Rep ; 14(1): 21513, 2024 09 14.
Artículo en Inglés | MEDLINE | ID: mdl-39277673

RESUMEN

To explore the association between serum calcium levels within normal ranges and Diabetic Kidney Disease (DKD) in type 2 diabetes patients. In this cross-sectional study, we analyzed clinical data from type 2 diabetes patients admitted to the Endocrinology Department of the Affiliated Hospital of Qingdao University from January 1, 2021, to December 1, 2022. We measured serum calcium levels, corrected for albumin, and screened for diabetes-related complications, including DKD. The association between corrected serum calcium levels and DKD was evaluated using logistic regression, with adjustments made for potential confounders and a generalized additive model (GAM) to explore non-linear relationships, supplemented by subgroup analyses. Among the 3016 patients (52.55% male, 47.45% female), the mean corrected serum calcium was 2.29 ± 0.08 mmol/L. DKD was present in 38.73% of patients. A 0.1 mmol/L increase in corrected serum calcium was associated with a 44% increased risk of DKD (OR = 1.44, 95% CI 1.28-1.61, p < 0.0001). The GAM indicated a linear relationship between corrected serum calcium and DKD risk, consistent across subgroups. Corrected serum calcium levels were linearly associated with DKD risk in type 2 diabetes patients, underlining its potential role in risk assessment. These findings emphasize the clinical importance of monitoring serum calcium levels. However, the need for further prospective studies to confirm these findings is underscored by the study's cross-sectional design.


Asunto(s)
Calcio , Diabetes Mellitus Tipo 2 , Nefropatías Diabéticas , Humanos , Diabetes Mellitus Tipo 2/sangre , Diabetes Mellitus Tipo 2/complicaciones , Femenino , Masculino , Estudios Transversales , Persona de Mediana Edad , Calcio/sangre , Nefropatías Diabéticas/sangre , Anciano , Factores de Riesgo
12.
Mater Today Bio ; 28: 101214, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39280109

RESUMEN

Bacterial infections and long-term inflammation cause serious secondary damage to chronic diabetic wounds and hinder the wound healing processes. Currently, multifunctional hydrogels have shown promising effects in chronic wound repair. However, traditional hydrogels only keep the wound moist and protect it from bacterial infection, and cannot provide mechanical force to contract the wound edges to achieve facilitated wound closure. Here, an asymmetric composite dressing was created by combining biaxially oriented nanofibers and hydrogel, inspired by the double-layer structure of the traditional Chinese medicinal plaster patch, for managing chronic wounds. Specifically, electrospun Poly-(lactic acid-co-trimethylene carbonate) (PLATMC) nanofibers and methacrylate gelatin (GelMa) hydrogel loaded with Epinecidin-1@chitosan (Epi-1@CS) nanoparticles are assembled as the temperature-responsive self-contracting nanofiber/hydrogel (TSNH) composite dressing. The substrate layer of PLATMC nanofibers combines topological morphology with material properties to drive wound closure through temperature-triggered contraction force. The functional layer of GelMa hydrogel is loaded with Epi-1@CS nanoparticles that combine satisfactory cytocompatibility, and antioxidant, anti-inflammatory, and antibacterial properties. Strikingly, in vivo, the TSNH dressing could regulate the diabetic wound microenvironment, thereby promoting collagen deposition, facilitating angiogenesis, and reducing the inflammatory response, which promotes the rapid healing of chronic wounds. This study highlights the potential of synergizing mechanical and biochemical signals in enhancing chronic wound treatment. Overall, this TSNH composite dressing is provided as a reliable approach to solving the long-standing problem of chronically infected wound healing.

13.
iScience ; 27(9): 110572, 2024 Sep 20.
Artículo en Inglés | MEDLINE | ID: mdl-39228788

RESUMEN

Sepsis-induced arrhythmia, linked to sudden cardiac death, is associated with gut microbiota, though the exact relationship is unclear. This study aimed to elucidate the relationship between Cronobacter sakazakii (C. sakazakii) and arrhythmia. The relative abundance of C. sakazakii was increased in cecal ligation and puncture (CLP)-induced septic mice. Live C. sakazakii, supernatant, and outer membrane vesicles (OMVs) resulted in premature ventricular beat (PVB), sinus arrhythmia (SA), and increased arrhythmia and mortality in sepsis model through dysregulated ion channel proteins. Moreover, short-chain fatty acids (SCFAs) showed antibacterial effects in vitro. We confirmed sodium acetate (C2) and sodium butyrate (C4) protect from C. sakazakii-induced arrhythmia, and C2 and C4 protected from septic arrhythmia by activating free fatty acid receptor 2 and 3 (FFAR2 and FFAR3) in mice. These findings point to how C. sakazakii's OMVs trigger arrhythmia, and SCFAs may be a treatment for septic arrhythmia.

14.
Nat Commun ; 15(1): 7652, 2024 Sep 03.
Artículo en Inglés | MEDLINE | ID: mdl-39227563

RESUMEN

P2X receptors, a subfamily of ligand-gated ion channels activated by extracellular ATP, are implicated in various physiopathological processes, including inflammation, pain perception, and immune and respiratory regulations. Structural determinations using crystallography and cryo-EM have revealed that the extracellular three-dimensional architectures of different P2X subtypes across various species are remarkably identical, greatly advancing our understanding of P2X activation mechanisms. However, structural studies yield paradoxical architectures of the intracellular domain (ICD) of different subtypes (e.g., P2X3 and P2X7) at the apo state, and the role of the ICD in P2X functional regulation remains unclear. Here, we propose that the P2X3 receptor's ICD has an apo state conformation similar to the open state but with a less tense architecture, containing allosteric sites that influence P2X3's physiological and pathological roles. Using covalent occupancy, engineered disulfide bonds and voltage-clamp fluorometry, we suggested that the ICD can undergo coordinated motions with the transmembrane domain of P2X3, thereby facilitating channel activation. Additionally, we identified a novel P2X3 enhancer, PSFL77, and uncovered its potential allosteric site located in the 1α3ß domain of the ICD. PSFL77 modulated pain perception in P2rx3+/+, but not in P2rx3-/-, mice, indicating that the 1α3ß, a "tunable" region implicated in the regulation of P2X3 functions. Thus, when P2X3 is in its apo state, its ICD architecture is fairly ordered rather than an unstructured outward folding, enabling allosteric modulation of the signaling of P2X3 receptors.


Asunto(s)
Sitio Alostérico , Dominios Proteicos , Receptores Purinérgicos P2X3 , Animales , Receptores Purinérgicos P2X3/metabolismo , Receptores Purinérgicos P2X3/química , Receptores Purinérgicos P2X3/genética , Humanos , Ratones , Células HEK293 , Adenosina Trifosfato/metabolismo , Masculino , Ratones Endogámicos C57BL , Regulación Alostérica
15.
Medicine (Baltimore) ; 103(22): e38432, 2024 May 31.
Artículo en Inglés | MEDLINE | ID: mdl-39259061

RESUMEN

Acute myeloid leukemia (AML), an uncommonly low 5-year survival and high mortality rate, is a potentially catastrophic diagnosed subtype of leukemia. The development of new prognostic markers is urgently needed to guide its treatment. Necroptosis is a newly defined biological process for regulating cell death, and previous studies have confirmed that the abnormality of the physical function can lead to multiple malignancies. Here, we performed necroptosis-related genes (NRGs) to build a predictive model in the Cancer Genome Atlas (TCGA)-AML patients, thus exploring the correlation between the NRG prognosis signature (NRG score) of this model and immune infiltration, pathway activity, clinical features, and immunotherapy. Besides, we computed the statistical measure Spearman rank correlation between the NRG score and the Log IC50 values of therapeutic agents. Subsequently, we divided the TCGA-AML cohort into 2 groups, one with high scores and the other with low scores depending on the model score. AML patients with high NRG scores exhibited a lower estimated overall survival (OS) rate than those with low NRG scores, which was confirmed in the validation set. The prognostic value of the constructed NRG signature to the AML, independent of other variables, was demonstrated by uni- and multivariate stepwise regression analysis. When comparing the infiltrating states of specialized cells associated with immune system from the 2 groups, B cells naive, Plasma cells, and monocytes represented significant differences among various subgroups of samples. Moreover, the 30 hallmark-related pathways related to necroptosis characteristics were remarkably different between the high/low NRG score groups. And patients showed remarkable NRG score distribution in clinical features of bone marrow lymphocyte, category, and FAB classifications. Besides, we found that the BIRB0796, VX680, Vorinostat, and Axitinib positively related with NRG score, whereas CI. 1040, PD. 0325901, Z.L LNle. CHO, and AZD6244 negatively correlated with the NRG score. These drugs may provide a reference for subsequent treatment.


Asunto(s)
Leucemia Mieloide Aguda , Necroptosis , Humanos , Leucemia Mieloide Aguda/genética , Leucemia Mieloide Aguda/tratamiento farmacológico , Leucemia Mieloide Aguda/patología , Leucemia Mieloide Aguda/mortalidad , Pronóstico , Necroptosis/genética , Masculino , Femenino , Persona de Mediana Edad , Biomarcadores de Tumor/genética , Anciano , Adulto
16.
Anal Chem ; 96(37): 14819-14825, 2024 Sep 17.
Artículo en Inglés | MEDLINE | ID: mdl-39235439

RESUMEN

To achieve high sensitivity detection of dual-component greenhouse gases carbon dioxide and methane simultaneously, a multimechanism synergistic enhanced all-optical photoacoustic spectroscopy gas analyzer is presented. The acoustic resonance of the photoacoustic cell and the mechanical resonance of a fiber-optic cantilever acoustic sensor are used to enhance the photoacoustic signals of the dual-component gas. The optimized multipass beam reflection structure enhances the effective excitation power of the dual-component gas. The highly sensitive detection of carbon dioxide and methane at dual-frequency operating points is realized by dual-channel laser modulation combined with dual-input digital lock-in amplification technology. The Allan-Werle deviation analysis results show that with a 100 s average time, the minimum detection limits of carbon dioxide and methane are 76.5 and 1.9 ppb, respectively. The corresponding normalized noise equivalent absorption (NNEA) coefficients are 3.1 × 10-10 and 2.9 × 10-10 cm-1 W/Hz1/2, respectively.

17.
J Affect Disord ; 368: 55-66, 2024 Sep 10.
Artículo en Inglés | MEDLINE | ID: mdl-39265869

RESUMEN

BACKGROUND: Previous observational studies have suggested that there appears to be a close association between mitochondrial function and psychiatric disorders, but whether a causal role exists remains unclear. METHODS: We extracted genetic instruments for 67 mitochondrial-related proteins and 10 psychiatric disorders from publicly available genome-wide association studies, and employed five distinct MR methods and false discovery rate correction to detect causal associations between them. Additionally, we conducted a series of sensitivity tests and additional model analysis to ensure the robustness of the results. For potential causal associations, we further performed reverse MR analyses to assess the impact of reverse causality. RESULTS: We identified a total of 2 significant causal associations and 24 suggestive causal associations. Specifically, Phenylalanine-tRNA ligase was found to increase the risk of Alzheimer's disease, while Mitochondrial glutamate carrier 2 decreased the risk of autism spectrum disorder. Furthermore, there was no evidence of significant pleiotropy, heterogeneity, or reverse causality. LIMITATIONS: This study was limited to individuals of European ancestry, and the conclusions drawn are merely revelatory. CONCLUSION: This study provides novel insights into the relationship between mitochondria and psychiatric disorders, as well as the pathogenesis and treatment strategies for psychiatric disorders.

18.
Int J Mol Sci ; 25(17)2024 Sep 02.
Artículo en Inglés | MEDLINE | ID: mdl-39273492

RESUMEN

Exploration of toxicological mechanisms is imperative for the assessment of potential adverse reactions to chemicals and pharmaceutical agents, the engineering of safer compounds, and the preservation of public health. It forms the foundation of drug development and disease treatment. High-throughput proteomics and transcriptomics can accurately capture the body's response to toxins and have become key tools for revealing complex toxicological mechanisms. Recently, a vast amount of omics data related to toxicological mechanisms have been accumulated. However, analyzing and utilizing these data remains a major challenge for researchers, especially as there is a lack of a knowledge-based analysis system to identify relevant biological pathways associated with toxicity from the data and to establish connections between omics data and existing toxicological knowledge. To address this, we have developed ToxDAR, a workflow-oriented R package for preprocessing and analyzing toxicological multi-omics data. ToxDAR integrates packages like NormExpression, DESeq2, and igraph, and utilizes R functions such as prcomp and phyper. It supports data preparation, quality control, differential expression analysis, functional analysis, and network analysis. ToxDAR's architecture also includes a knowledge graph with five major categories of mechanism-related biological entities and details fifteen types of interactions among them, providing comprehensive knowledge annotation for omics data analysis results. As a case study, we used ToxDAR to analyze a transcriptomic dataset on the toxicology of triphenyl phosphate (TPP). The results indicate that TPP may impair thyroid function by activating thyroid hormone receptor ß (THRB), impacting pathways related to programmed cell death and inflammation. As a workflow-oriented data analysis tool, ToxDAR is expected to be crucial for understanding toxic mechanisms from omics data, discovering new therapeutic targets, and evaluating chemical safety.


Asunto(s)
Proteómica , Programas Informáticos , Transcriptoma , Flujo de Trabajo , Proteómica/métodos , Humanos , Perfilación de la Expresión Génica/métodos , Animales , Biología Computacional/métodos , Toxicología/métodos
19.
J Environ Manage ; 370: 122435, 2024 Sep 11.
Artículo en Inglés | MEDLINE | ID: mdl-39270334

RESUMEN

Rampant and illegal river sand mining in the Vietnamese Mekong Delta (VMD) has led to substantial sediment losses and bank erosion. However, regulation of this issue remains a significant challenge due to insufficient monitoring and enforcement efforts, partly attributed to limited data and technology. To support an improved monitoring system in the VMD, this study investigates the spatiotemporal changes in sand mining hotspots and their underlying drivers. The recurrence intervals of sand mining boats were assessed from 2014 to 2020 using Sentinel-1A, and its association with riverbed incisions were examined from bathymetry field surveys between 2017 and 2020. Our results attest to sand mining intensification from 2015 to 2020, particularly in the upstream section of the VMD, where 70% of the activity was recorded. Not only was there an apparent increase in sand mining hotspots by 32.4%, but most hotspots recorded a recurrence interval of 2 years. This potentially indicates a minimal timeframe of sediment replenishment before the same locations become economically viable for further sand extraction. Additionally, a correlation was detected between sand mining hotspots and significant riverbed incisions, although the lack of spatial overlaps in some regions suggests other upstream influences like bank collapse and river damming. Our study, through the meticulous assessment of sand mining boat movement and river bathymetry data, ultimately sheds light on the potentially unsustainable scale of sand mining activities in the VMD. It aims to support informed decision-making and effective regulations that tackle excessive sand extraction amid the dynamic environmental challenges we face, while offering valuable insights to similar deltas worldwide.

20.
Trends Neurosci ; 2024 Sep 12.
Artículo en Inglés | MEDLINE | ID: mdl-39271369

RESUMEN

Migraine is highly prevalent and debilitating. The persistent headaches in this condition are thought to arise from the activation and sensitization of the trigeminovascular pathway. Both clinical and animal model studies have suggested that neuroimmune interactions contribute to the pathophysiology of migraine headache. In this review, we first summarize the findings from human studies implicating the dysregulation of the immune system in migraine, including genetic analyses, measurement of circulatory factors, and neuroimaging data. We next discuss recent advances from rodent studies aimed at elucidating the neuroimmune interactions that manifest at various levels of the trigeminovascular pathway and lead to the recruitment of innate and adaptive immune cells as well as immunocompetent glial cells. These cells reciprocally modulate neuronal activity via multiple pro- and anti-inflammatory mediators, thereby regulating peripheral and central sensitization. Throughout the discussions, we highlight the potential clinical and translational implications of the findings.

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