Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 42
Filtrar
Más filtros

Banco de datos
País/Región como asunto
Tipo del documento
Intervalo de año de publicación
1.
Acta Neurochir (Wien) ; 165(10): 2913-2921, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37523075

RESUMEN

BACKGROUND: Trigeminal schwannomas (TSs) are mostly benign tumors. However, dumbbell-shaped TSs are most challenging for surgeons and pose a high surgical risk. OBJECTIVE: We describe the technique of the purely endoscopic far-lateral supracerebellar infratentorial approach (EFL-SCITA) for removing dumbbell-shaped TSs and further discuss the feasibility of this approach and our experience. METHODS: EFL-SCITA was performed for resection of 5 TSs between January 2020 and March 2023. The entire procedure was performed endoscopically with the goal of total tumor resection. During the operation, the tumor was exposed in close proximity and multiple angles under the endoscope, and the peri-tumor nerves were carefully identified and protected, especially the normal trigeminal fiber bundles around the tumor. RESULTS: All the tumors of 5 patients involved the middle and posterior cranial fossa, of which total removal was achieved in 2 patients and near-total removal in 3 patients. The most common preoperative symptoms were relieved after surgery. Two patients had postoperative mild facial paralysis (House-Brackmann grade II), and 1 patient had abducens palsy; both recovered during the follow-up period. Two patients experienced new postoperative facial hypesthesia, and 1 experienced mastication weakness, which did not recover. There was no tumor recurrence or residual tumor growth during the follow-up period in any of the patients. CONCLUSION: EFL-SCITA is a new and effective alternative for the surgical treatment of TSs. For dumbbell-shaped TSs, this approach provides sufficient surgical field exposure and freedom of operation.


Asunto(s)
Neoplasias de los Nervios Craneales , Neurilemoma , Humanos , Recurrencia Local de Neoplasia/cirugía , Endoscopía/métodos , Procedimientos Neuroquirúrgicos/métodos , Neurilemoma/diagnóstico por imagen , Neurilemoma/cirugía , Neurilemoma/patología , Neoplasias de los Nervios Craneales/diagnóstico por imagen , Neoplasias de los Nervios Craneales/cirugía , Neoplasias de los Nervios Craneales/patología
2.
Neurosurg Rev ; 45(6): 3817-3827, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36352046

RESUMEN

The deep location of the thalamus and the complex neural circuits in the surrounding area make surgery extremely challenging. Feasibility and advisability of using a supracerebellar infratentorial approach (SCITA) for endoscopic resection of thalamic lesions remains to be further evaluated. Fifteen patients who underwent endoscopic resection of thalamic via SCITA from 2014 to 2021 were retrospectively collected. We analyzed preoperative tumor-related variables and surgical procedures in detail, as well as postoperative outcomes. Lesions mainly located in the posterior and/or medial part of the thalamus, and some of them expanded downward, or backward. The mean size of them was 30 × 24 mm. Five of the nine patients with preoperative hydrocephalus underwent cerebrospinal fluid shunts to relieve increased intracranial pressure. Among the 15 patients, 4 were glioblastoma, 3 were pilocytic astrocytoma, and the rest included 1 case of anaplastic astrocytoma, melanoma, polymorphous low-grade neuroepithelial tumor of the young, rosette-forming glioneuronal tumor, inflammatory lesion, diffuse midline glioma, and cavernous hemangioma. The majority of patients (10/15) achieved gross total resection, which has become more pronounced since paramedian SCITA was used in place of the midline approach in 2020 (6/8). Three patients had unresolved or new onset of clinical symptoms after surgery, resulting in a decreased KPS score at discharge. Neuro-endoscopic techniques can ameliorate many of the shortcomings of the SCITA. With the accumulation of experience and technological progress, more deficiencies of this approach may be improved, enabling safe and effective resection of posterior and/or medial part thalamic lesions.


Asunto(s)
Astrocitoma , Glioblastoma , Glioma , Hemangioma Cavernoso , Humanos , Procedimientos Neuroquirúrgicos/métodos , Estudios Retrospectivos , Astrocitoma/cirugía , Astrocitoma/patología , Hemangioma Cavernoso/cirugía , Glioma/cirugía , Glioblastoma/cirugía
3.
Genomics ; 113(6): 3881-3894, 2021 11.
Artículo en Inglés | MEDLINE | ID: mdl-34571174

RESUMEN

Members of the REM (Reproductive Meristem) gene family are expressed primarily in reproductive meristems and floral organs. However, their evolution and their functional profiles in flower development remain poorly understood. Here, we performed genome-wide identification and evolutionary analysis of the REM gene family in Rosaceae. This family has been greatly expanded in rose (Rosa chinensis) compared to other species, primarily through tandem duplication. Expression analysis revealed that most RcREM genes are specifically expressed in reproductive organs and that their specific expression patterns are dramatically altered in rose plants with mutations affecting floral organs. Protein-protein interaction analysis indicated that RcREM14 interact with RcAP1 (one of the homology of A class genes in ABCDE model), highlighting the roles of RcREM genes in floral organ identity. Finally, co-expression network analysis indicated that RcREM genes are co-expressed with a high proportion of key genes that regulate flowering time, floral organ development, and cell proliferation and expansion in R. chinensis.


Asunto(s)
Rosa , Flores/metabolismo , Regulación de la Expresión Génica de las Plantas , Genes de Plantas , Meristema/genética , Meristema/metabolismo , Filogenia , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo , Rosa/genética , Rosa/metabolismo
4.
Ecotoxicol Environ Saf ; 211: 111940, 2021 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-33476849

RESUMEN

Desorption is one of the main factors causing groundwater and soil pollution. Therefore, the study of clay desorption characteristics is important for the prediction of groundwater and soil pollution. In previous studies, batch tests and column tests were used to study the desorption characteristics of pollutants on clay. However, the desorption parameters obtained via the two test methods were often quite different. To investigate differences in the desorption characteristics of different pollutants on clay particles and in compacted clay, batch and column desorption tests were conducted using cadmium chloride, fulvic acid, and sodium phosphate as the adsorbates and bentonite as the adsorbent. It was found that the unit particle surface area desorption distribution coefficients of pollutants on bentonite particles were approximately equal to the unit pore surface area distribution coefficients of pollutants in compacted bentonite. This indicates that the desorbed amount per unit of surface area is basically consistent, regardless of whether they are sorbed on particles or in compacted bentonite. A simple formula for determining the desorption retardation factor of pollutants in compacted bentonite is presented. The results of this study provide a reference for the prediction and evaluation of groundwater and soil pollution.


Asunto(s)
Bentonita/química , Contaminantes Ambientales/química , Adsorción , Arcilla , Agua Subterránea , Modelos Químicos , Fosfatos
5.
Int J Mol Sci ; 22(10)2021 May 13.
Artículo en Inglés | MEDLINE | ID: mdl-34068004

RESUMEN

Enzymes with fructan exohydrolase (FEH) activity are present not only in fructan-synthesizing species but also in non-fructan plants. This has led to speculation about their functions in non-fructan species. Here, a cell wall invertase-related Zm-6&1-FEH2 with no "classical" invertase motif was identified in maize. Following heterologous expression in Pichia pastoris and in Nicotiana benthamiana leaves, the enzyme activity of recombinant Zm-6&1-FEH2 displays substrate specificity with respect to inulin and levan. Subcellular localization showed Zm-6&1-FEH2 exclusively localized in the apoplast, and its expression profile was strongly dependent on plant development and in response to drought and abscisic acid. Furthermore, formation of 1-kestotriose, an oligofructan, was detected in vivo and in vitro and could be hydrolyzed by Zm-6&1-FEH2. In summary, these results support that Zm-6&1-FEH2 enzyme from maize can degrade both inulin-type and levan-type fructans, and the implications of the co-existence of Zm-6&1-FEH2 and 1-kestotriose are discussed.


Asunto(s)
Fructanos/metabolismo , Glicósido Hidrolasas/metabolismo , Inulina/metabolismo , Trisacáridos/metabolismo , Zea mays/metabolismo , Glicósido Hidrolasas/genética , Hojas de la Planta/genética , Hojas de la Planta/crecimiento & desarrollo , Hojas de la Planta/metabolismo , Saccharomycetales/genética , Saccharomycetales/metabolismo , Nicotiana/genética , Nicotiana/metabolismo , Zea mays/crecimiento & desarrollo
6.
Int J Mol Sci ; 22(17)2021 Aug 29.
Artículo en Inglés | MEDLINE | ID: mdl-34502273

RESUMEN

Cucumber (Cucumis sativus L.), an important vegetable plant species, is susceptible to low temperature stress especially during the seedling stage. Vacuolar invertase (VI) plays important roles in plant responses to abiotic stress. However, the molecular and biochemical mechanisms of VI function in cucumber, have not yet been completely understood and VI responses to low temperature stress and it functions in cold tolerance in cucumber seedlings are also in need of exploration. The present study found that hexose accumulation in the roots of cucumber seedlings under low temperature stress is closely related to the observed enhancement of invertase activity. Our genome-wide search for the vacuolar invertase (VI) genes in cucumber identified the candidate VI-encoding gene CsVI1. Expression profiling of CsVI1 showed that it was mainly expressed in the young roots of cucumber seedlings. In addition, transcriptional analysis indicated that CsVI1 expression could respond to low temperature stress. Recombinant CsVI1 proteins purified from Pichia pastoris and Nicotiana benthamiana leaves could hydrolyze sucrose into hexoses. Further, overexpression of CsVI1 in cucumber plants could increase their hexose contents and improve their low temperature tolerance. Lastly, a putative cucumber invertase inhibitor was found could form a complex with CsVI1. In summary, these results confirmed that CsVI1 functions as an acid invertase involved in hexose accumulation and responds to low temperature stress in cucumber seedlings.


Asunto(s)
Cucumis sativus/fisiología , Hexosas/metabolismo , Proteínas de Plantas/metabolismo , beta-Fructofuranosidasa/metabolismo , Frío , Regulación de la Expresión Génica de las Plantas , Genoma de Planta , Filogenia , Proteínas de Plantas/genética , Raíces de Plantas/fisiología , Saccharomycetales/genética , Plantones/fisiología , Estrés Fisiológico , Sacarosa/metabolismo , Vacuolas/metabolismo , beta-Fructofuranosidasa/genética
7.
Waste Manag Res ; 39(2): 368-373, 2021 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-32993443

RESUMEN

Leachate transport through municipal solid waste (MSW) landfill liners can be slowed considerably by adsorption. MSW landfill leachate contains a large variety of pollutants at very different concentrations, and there will be competitive adsorption as these pollutants are transported through the landfill's compacted clay liner (CCL). In this study, we used batch adsorption tests and geotechnical centrifuge modelling to examine how the adsorption of pollutants commonly found in leachate changed under competitive adsorption conditions and how competitive adsorption affected the CCL breakthrough of multiple pollutants. The results showed that the adsorption of the target pollutant on clay decreased by approximately 30% when competing pollutants were added. The speed at which the pollutants were transported through a 2-m-thick CCL increased, and the breakthrough times reduced by up to 24.8%, when the competing pollutants were mixed. Competitive adsorption significantly promoted the CCL breakthrough of pollutants at low concentrations, but it had limited effect on pollutants at high concentrations.


Asunto(s)
Contaminantes Ambientales , Eliminación de Residuos , Contaminantes Químicos del Agua , Adsorción , Arcilla , Instalaciones de Eliminación de Residuos , Contaminantes Químicos del Agua/análisis
8.
Ecotoxicol Environ Saf ; 181: 114-120, 2019 Oct 15.
Artículo en Inglés | MEDLINE | ID: mdl-31176245

RESUMEN

Evaluation of adsorption properties of pollutants on artificial or natural clay strata is normally considered in investigations of soil and groundwater pollution. Batch adsorption tests can be used to obtain the adsorption parameters of clay particles; however, the results from these tests are usually very different from the adsorption of actual clay strata. If the adsorption parameters obtained by batch tests are used to directly evaluate the properties of adsorption of pollutants onto compacted clay, the predicted groundwater and soil pollution will be unsafe. Although the column diffusion tests are closer to the actual situation, they may require much more time, and diffusion and adsorption occur simultaneously in tests, making it difficult to accurately determine the adsorption parameters. To solve this problem, batch adsorption and column diffusion tests were conducted using three kinds of clay materials to investigate the mechanism of the differences in adsorption properties of heavy metal on clay particles and in compacted clay. The amount of adsorption per unit particle surface area of clay particles was found to be equal to that per unit pore surface area of compacted clay. A new simplified method was proposed to determine the adsorption parameters in compacted clay. It is easy to use and provide a reference for prediction and evaluation of soil and groundwater pollution.


Asunto(s)
Arcilla/química , Metales Pesados/análisis , Contaminantes del Suelo/análisis , Contaminantes Químicos del Agua/análisis , Adsorción , Monitoreo del Ambiente/métodos , Agua Subterránea/química
9.
J Environ Manage ; 239: 262-270, 2019 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-30903838

RESUMEN

In previous studies of municipal solid waste (MSW) landfill barrier systems, chemical oxygen demand has been found to be the key pollutant indicator when estimating the breakthrough time for. However, the leachate head in a municipal solid waste landfill can be very high (>10 m in some Chinese landfills). The key pollutant indicator could be different at different leachate heads. The leachate head will continuously change during the use of a landfill. Different pollutants have different transport characteristics in the leachate, so it is necessary to determine whether changes in the leachate head change the key pollutant indicator for identifying breakthrough in a landfill barrier system. In this study, numerical models were used to investigate transport of common leachate pollutants through four typical landfill barrier systems with different leachate heads. Chemical oxygen demand reached the breakthrough threshold before the other pollutants, irrespective of (1) the leachate head and (2) changes in the leachate head. It was therefore clear that the leachate head did not affect the selection of the key pollutant indicator for identifying breakthrough in a landfill barrier system.


Asunto(s)
Contaminantes Ambientales , Eliminación de Residuos , Contaminantes Químicos del Agua , Residuos Sólidos , Instalaciones de Eliminación de Residuos
10.
Water Sci Technol ; 80(9): 1751-1762, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-32039907

RESUMEN

In the water treatment process of natural water bodies, a large amount of dredged slurry with high water content is generated and required for treatment. The coagulation-flocculation method can improve the efficiency of separation, and a suitable scheme is of great significance. It is unclear whether there is a significant difference in flocculation and separation of dredged slurries from different sources and which constituents dominate this process. Facing these problems, the tests were conducted for dredged sediments from 10 different sources, including rivers, lake, and ocean. Under the same flocculation conditions, the difference in the increment of particle size d10, the specific resistance of filtration, and the suspended solids (SS) of the supernatant after sedimentation are 0-4.6 times, 0-2.4 orders of magnitude, and 0-4 orders of magnitude, respectively. It was found that the main constituents in the dredged slurries, such as clay minerals, fulvic acid and humic acid, impact on flocculation and separation effects by affecting the zeta potential of the particles. However, there is no single constituent in the dredged slurry which dominates the flocculation and separation effect. When these constituents are incorporated, the zeta potential exhibited in the slurry determines the difference in flocculation and separation effects.


Asunto(s)
Purificación del Agua , Filtración , Floculación , Tamaño de la Partícula , Ríos
11.
Biochem Genet ; 55(3): 253-267, 2017 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-28315020

RESUMEN

The microRNAs (miRNAs) are involved in multiple pathological processes among various types of tumors. However, the functions of miRNAs in benign brain tumors are largely unexplored. In order to explore the pathogenesis of the invasiveness in non-functional pituitary adenoma (NFPA), the miRNAs expression profile was analyzed between invasive and non-invasive non-functional pituitary adenoma by miRNAs microarray. Six most significant differentially expressed miRNAs were identified including four upregulated miRNAs hsa-miR-181b-5p, hsa-miR-181d, hsa-miR-191-3p, and hsa-miR-598 and two downregulated miRNAs hsa-miR-3676-5p and hsa-miR-383. The functions and corresponding signaling pathways of differentially expressed miRNAs were investigated by bioinformatics techniques, including Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. The result of GO analysis indicates regulation of voltage-gated potassium channel activity, positive regulation of sodium ion transport, positive regulation of GTPase activity, negative regulation of Notch signaling pathway, etc. KEGG pathway reveals a series of biological processes, including prolactin signaling pathway, endocrine and other factor-regulated calcium reabsorption, fatty acid metabolism, neuroactive ligand-receptor interaction, etc. The miRNAs hsa-miR-181a-5p was verified by quantitative real-time PCR, and the expression level was in accordance with the microarray result. Our result can provide the evidence on featured miRNAs which play a prominent role in pituitary adenoma as effective biomarkers and therapeutic targets in the future.


Asunto(s)
Adenoma/patología , Biomarcadores de Tumor/genética , Perfilación de la Expresión Génica , Regulación Neoplásica de la Expresión Génica , MicroARNs/genética , Neoplasias Hipofisarias/patología , Adenoma/genética , Adenoma/cirugía , Adulto , Anciano , Anciano de 80 o más Años , Estudios de Casos y Controles , Estudios de Cohortes , Biología Computacional , Femenino , Humanos , Masculino , Persona de Mediana Edad , Invasividad Neoplásica , Estadificación de Neoplasias , Neoplasias Hipofisarias/genética , Neoplasias Hipofisarias/cirugía , Pronóstico , Reacción en Cadena en Tiempo Real de la Polimerasa
12.
J Cereb Blood Flow Metab ; 44(9): 1674-1676, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-38907363

RESUMEN

The disruption of the blood-brain barrier marks a pivotal early pathological event in ischemic stroke that significantly contributes to subsequent permanent damage. Here we delve into the ramifications of a study conducted by Xu and colleagues, which underscores the essential role of the protein peroxiredoxin-4 in cerebrovascular endothelial cells. Peroxiredoxin-4 was shown to preserve blood-brain barrier integrity during the early stages after cerebral ischemia and reperfusion, ultimately leading to improved long-term outcomes.


Asunto(s)
Barrera Hematoencefálica , Barrera Hematoencefálica/metabolismo , Humanos , Animales , Células Endoteliales/metabolismo , Endotelio Vascular/metabolismo , Isquemia Encefálica/metabolismo , Peroxirredoxinas/metabolismo
13.
Medicine (Baltimore) ; 103(43): e40122, 2024 Oct 25.
Artículo en Inglés | MEDLINE | ID: mdl-39470544

RESUMEN

It remains unclear what causes esophageal cancer (EC), but blood metabolites have been connected to it. Our study performed a Mendelian randomization (MR) analysis to assess the causality from genetically proxied 1400 blood metabolites to EC level. A two-sample MR analysis was employed to evaluate the causal relationship between 1400 blood metabolites and EC. Initially, the EC genome-wide association study (GWAS) data (from Jiang L et al) were examined, leading to the identification of certain metabolites. Subsequently, another set of EC GWAS data from FINNGEN was utilized to validate the findings. Causality was primarily determined through inverse variance weighting, with additional support from the MR-Egger, weighted median, and MR-PRESSO models. Heterogeneity was assessed using the MR Cochran Q test. The MR-Egger intercept and MR-PRESSO global methods were employed to detect multicollinearity. In this study, Bonferroni corrected P value was used for significance threshold. We found 2 metabolites with overlaps, which are lipids. Docosatrienoate (22:3n3) was found to be causally associated with a decreased risk of EC, as evidenced by the EC GWAS data (from Jiang et al) (odds ratio [OR] = 0.620, 95% confidence interval [CI] = 0.390-0.986, P = .044) and the EC GWAS data (from FINNGEN) (OR = 0.77, 95% CI = 0.6-0.99, P = .042), these results were consistent across both data sets. Another overlapping metabolite, glycosyl-N-(2-hydroxyneuramoyl)-sphingosine, was associated with the risk of ES, with EC GWAS data (from Jiang L et al) (OR = 1.536, 95% CI = 1.000-2.360, P = .049), while EC GWAS data (from FINNGEN) (OR = 0.733, 95% CI = 0.574-0.937, P = .013), the 2 data had opposite conclusions. The findings of this study indicate a potential association between lipid metabolites (Docosatrienoate (22:3n3) and glycosyl-N-(2-hydroxynervonoyl)-sphingosine (d18:1/24:1 (2OH))) and the risk of esophageal carcinogenesis.


Asunto(s)
Neoplasias Esofágicas , Estudio de Asociación del Genoma Completo , Análisis de la Aleatorización Mendeliana , Humanos , Neoplasias Esofágicas/genética , Neoplasias Esofágicas/sangre , Polimorfismo de Nucleótido Simple , Factores de Riesgo
14.
Environ Sci Pollut Res Int ; 31(10): 15885-15899, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38308778

RESUMEN

Addressing the substantial yearly production of waste dredged slurry with high water content, it is imperative to adopt effective technical treatments for sustainable development. This paper establishes that the curing-flocculation-vacuum filtration (C-F-VF) method efficiently converts high-water content dredged slurry into back-fill soil, achieving rapid dewatering. The study delves into the mechanism facilitating swift dewatering and the heightened mechanical properties of the dewatered soil. The synergy of curing, flocculation, and vacuum filtration expedites the dewatering process. The pre-addition of a curing agent reduces the zeta potential of the slurry, enhancing its efficiency in subsequent flocculation and vacuum filtration. Although the curing agent experiences some loss during vacuum filtration, over 91.22% remains in the dewatered soil, fortifying its strength. Soil strength correlates with the water content post-vacuum filtration and the amount of cement added pre-filtration, with a proposed relevant strength prediction formula.


Asunto(s)
Aguas del Alcantarillado , Agua , Floculación , Vacio , Suelo
15.
Ultrason Sonochem ; 102: 106736, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38109798

RESUMEN

Sludge dewatering plays a critical role in the efficient and cost-effective management of wastewater treatment plants. Ultrasonic treatment has emerged as a promising technique for improving dewatering processes. This study aims to evaluate the impact of ultrasonic treatment on sludge dewatering characteristics. A series of experiments were conducted to evaluate the dewatering characteristics of sludge under ultrasonic treatment. Experimental data was collected, and the effects of ultrasonic parameters on dewatering efficiency were analyzed. Ultrasound has the capacity to disintegrate sludge flocs, liberate tightly bound water, and enhance sludge dewatering capabilities. The application of ultrasound leads to the breakdown of sludge flocs, which facilitates a substantial amount of organic acids or carbonates. This, in turn, modifies the pH value of the sludge. Additionally, ultrasound induces instantaneous high temperature and pressure within the liquid phase, consequently elevating the temperature of the sludge slurry. Optimum ultrasound energy density and duration of ultrasound treatment exist. For the sludge samples analyzed in this investigation, it was determined that the optimal ultrasonic energy density is 9.8 W, while the optimal duration of ultrasound treatment is 30 s. Excessively escalating the sound energy density or prolonging the duration of ultrasound may yield unfavorable outcomes in terms of sludge dewatering effectiveness. To enhance sludge dewatering, it is crucial to select appropriate ultrasonic energy density and duration of ultrasonic treatment. This study demonstrates the positive impact of ultrasonic treatment on the dewatering characteristics of sludge. The findings provide valuable insights into the potential of ultrasonic technology for enhancing sludge dewatering.

16.
Front Cell Neurosci ; 18: 1340756, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38550918

RESUMEN

Ischemic stroke is a major disease causing death and disability in the elderly and is one of the major diseases that seriously threaten human health and cause a great economic burden. In the early stage of ischemic stroke, neuronal structure is destroyed, resulting in death or damage, and the release of a variety of damage-associated pattern molecules induces an increase in neuroglial activation, peripheral immune response, and secretion of inflammatory mediators, which further exacerbates the damage to the blood-brain barrier, exacerbates cerebral edema, and microcirculatory impairment, triggering secondary brain injuries. After the acute phase of stroke, various immune cells initiate a protective effect, which is released step by step and contributes to the repair of neuronal cells through phenotypic changes. In addition, ischemic stroke induces Central Nervous System (CNS) immunosuppression, and the interaction between the two influences the outcome of stroke. Therefore, modulating the immune response of the CNS to reduce the inflammatory response and immune damage during stroke is important for the protection of brain function and long-term recovery after stroke, and modulating the immune function of the CNS is expected to be a novel therapeutic strategy. However, there are fewer studies on B-cells in brain function protection, which may play a dual role in the stroke process, and the understanding of this cell is still incomplete. We review the existing studies on the mechanisms of the role of B-cells, inflammatory response, and immune response in the development of ischemic stroke and provide a reference for the development of adjuvant therapeutic drugs for ischemic stroke targeting inflammatory injury.

17.
Nat Med ; 30(5): 1395-1405, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38693247

RESUMEN

Cerebral palsy (CP) is the most common motor disability in children. To ascertain the role of major genetic variants in the etiology of CP, we conducted exome sequencing on a large-scale cohort with clinical manifestations of CP. The study cohort comprised 505 girls and 1,073 boys. Utilizing the current gold standard in genetic diagnostics, 387 of these 1,578 children (24.5%) received genetic diagnoses. We identified 412 pathogenic and likely pathogenic (P/LP) variants across 219 genes associated with neurodevelopmental disorders, and 59 P/LP copy number variants. The genetic diagnostic rate of children with CP labeled at birth with perinatal asphyxia was higher than the rate in children without asphyxia (P = 0.0033). Also, 33 children with CP manifestations (8.5%, 33 of 387) had findings that were clinically actionable. These results highlight the need for early genetic testing in children with CP, especially those with risk factors like perinatal asphyxia, to enable evidence-based medical decision-making.


Asunto(s)
Parálisis Cerebral , Variaciones en el Número de Copia de ADN , Secuenciación del Exoma , Heterogeneidad Genética , Humanos , Parálisis Cerebral/genética , Femenino , Masculino , Niño , Preescolar , Variaciones en el Número de Copia de ADN/genética , Exoma/genética , Lactante , Pruebas Genéticas , Estudios de Cohortes , Predisposición Genética a la Enfermedad , Recién Nacido
18.
Sci Rep ; 13(1): 15969, 2023 Sep 25.
Artículo en Inglés | MEDLINE | ID: mdl-37749126

RESUMEN

In the preparation of the slurry in the slurry shield (SSS) and subsequent reduction of the waste slurry produced by the slurry shield (WSSS), the additives in SSS improve the quality of filtration cake on the excavation surface, but they may also remain in WSSS, which have a negative impact on the reduction efficiency of WSSS. Therefore, it is valuable to establish the relationship between SSS and WSSS with additives as a link. Given this, this paper prepared WSSS with different dosages of additives and studied the influence of residual additives on the reduction. The residual additives made the reduction efficiency of WSSS worse, and the specific resistance to filtration increased by one to two orders of magnitude. The residual additives change the content of bound water or reduce the available sites of the soil particles that can be adsorbed by flocculants, leading to worse reduction results. To reduce the difficulty of reduction, combining polymer and bentonite as additives are recommended to prepare SSS. Polyaluminium chloride (PAC) acts by reducing bound water content through the interaction with residual bentonite, simultaneously augmenting PAM flocculation, which is recommended for reducing WSSS. This paper provides a reference for selecting materials used to prepare SSS and the subsequent reduction of WSSS.

19.
Front Immunol ; 14: 1071675, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36761737

RESUMEN

Background: Insulin-like growth factor 2 mRNA-binding protein 3 (IGF2BP3) has been reported to exhibit an oncogenic effect as an RNA-binding protein (RBP) by promoting tumor cell proliferation, migration and invasion in several tumor types. However, a pan-cancer analysis of IGF2BP3 is not currently available, and the exact roles of IGF2BP3 in prognosis and immunology in cancer patients remain enigmatic. The main aim of this study was to provide visualization of the systemic prognostic landscape of IGF2BP3 in pan-cancer and to uncover the potential relationship between IGF2BP3 expression in the tumor microenvironment and immune infiltration profile. Methods: Raw data on IGF2BP3 expression were obtained from GTEx, CCLE, TCGA, and HPA data portals. We have investigated the expression patterns, diagnostic and prognostic significance, mutation landscapes, functional analysis, and functional states of IGF2BP3 utilizing multiple databases, including HPA, TISIDB, cBioPortal, GeneMANIA, GESA, and CancerSEA. Moreover, the relationship of IGF2BP3 expression with immune infiltrates, TMB, MSI and immune-related genes was evaluated in pan-cancer. IGF2BP3 with drug sensitivity analysis was performed from the CellMiner database. Furthermore, the expression of IGF2BP3 in different grades of glioma was detected by immunohistochemical staining and western blot. Results: We found that IGF2BP3 was ubiquitously highly expressed in pan-cancer and significantly correlated with diagnosis, prognosis, TMB, MSI, and drug sensitivity in various types of cancer. Besides, IGF2BP3 was involved in many cancer pathways and varied in different immune and molecular subtypes of cancers. Additionally, IGF2BP3 is critically associated with genetic markers of immunomodulators in various cancers. Finally, we validated that IGF2BP3 protein expression was significantly higher in glioma than in normal tissue, especially in GBM. Conclusions: IGF2BP3 may be a potential molecular biomarker for diagnosis and prognosis in pan-cancer, especially for glioma. It could become a novel therapeutic target for various cancers.


Asunto(s)
Glioma , Multiómica , Neoplasias , Humanos , Adenosina , Biomarcadores , Glioma/diagnóstico , Glioma/genética , Microambiente Tumoral/genética , Biomarcadores de Tumor/genética , Neoplasias/diagnóstico , Neoplasias/genética
20.
Nutrients ; 15(6)2023 Mar 20.
Artículo en Inglés | MEDLINE | ID: mdl-36986217

RESUMEN

The leaf of Perilla frutescens (L.) Britt (PF) has been reported to negatively affect adipocyte formation, inhibit body-fat formation, and lower body weight. However, its effect on adipocyte browning remains unknown. Thus, the mechanism of PF in promoting adipocyte browning was investigated. The ingredients of PF were acquired from the online database and filtered with oral bioavailability and drug-likeness criteria. The browning-related target genes were obtained from the Gene Card database. A Venn diagram was employed to obtain the overlapped genes that may play a part in PF promoting adipocyte browning, and an enrichment was analysis conducted based on these overlapped genes. A total of 17 active ingredients of PF were filtered, which may regulate intracellular receptor-signaling pathways, the activation of protein kinase activity, and other pathways through 56 targets. In vitro validation showed that PF promotes mitochondrial biogenesis and upregulates brite adipocyte-related gene expression. The browning effect of PF can be mediated by the p38 MAPK pathway as well as PI3K-AKT pathway. The study revealed that PF could promote adipocyte browning through multitargets and multipathways. An in vitro study validated that the browning effect of PF can be mediated by both the P38 MAPK pathway and the PI3K-AKT pathway.


Asunto(s)
Perilla frutescens , Perilla frutescens/genética , Proteínas Proto-Oncogénicas c-akt/genética , Proteínas Proto-Oncogénicas c-akt/metabolismo , Fosfatidilinositol 3-Quinasas/genética , Fosfatidilinositol 3-Quinasas/metabolismo , Proteínas Quinasas p38 Activadas por Mitógenos/genética , Proteínas Quinasas p38 Activadas por Mitógenos/metabolismo , Adipocitos/metabolismo , Extractos Vegetales/farmacología
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA