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1.
J Environ Sci (China) ; 147: 259-267, 2025 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-39003045

RESUMEN

Arsenic (As) pollution in soils is a pervasive environmental issue. Biochar immobilization offers a promising solution for addressing soil As contamination. The efficiency of biochar in immobilizing As in soils primarily hinges on the characteristics of both the soil and the biochar. However, the influence of a specific property on As immobilization varies among different studies, and the development and application of arsenic passivation materials based on biochar often rely on empirical knowledge. To enhance immobilization efficiency and reduce labor and time costs, a machine learning (ML) model was employed to predict As immobilization efficiency before biochar application. In this study, we collected a dataset comprising 182 data points on As immobilization efficiency from 17 publications to construct three ML models. The results demonstrated that the random forest (RF) model outperformed gradient boost regression tree and support vector regression models in predictive performance. Relative importance analysis and partial dependence plots based on the RF model were conducted to identify the most crucial factors influencing As immobilization. These findings highlighted the significant roles of biochar application time and biochar pH in As immobilization efficiency in soils. Furthermore, the study revealed that Fe-modified biochar exhibited a substantial improvement in As immobilization. These insights can facilitate targeted biochar property design and optimization of biochar application conditions to enhance As immobilization efficiency.


Asunto(s)
Arsénico , Carbón Orgánico , Aprendizaje Automático , Contaminantes del Suelo , Suelo , Carbón Orgánico/química , Arsénico/química , Contaminantes del Suelo/química , Contaminantes del Suelo/análisis , Suelo/química , Modelos Químicos
3.
J Vasc Interv Radiol ; 2024 Sep 02.
Artículo en Inglés | MEDLINE | ID: mdl-39233050

RESUMEN

PURPOSE: To demonstrate the safety and effectiveness of a computer-assisted large bore thrombectomy (CA-LBT) device aspiration thrombectomy device for treatment of deep vein thrombosis (DVT). MATERIALS AND METHODS: A single institutional retrospective review was performed to include 16 consecutive patients (median age 51.1 years, range 19-77; 5 men and 11 women) who underwent percutaneous thrombectomy using a 16 Fr CA-LBT device (Lightning Flash Aspiration System,Penumbra Inc., Alameda, California, USA) for DVT (12 iliofemoral with or without caval extension [75.0%], 3 axillosubclavian [18.8%], and 1 caval [6.3%) between January 2023 and August 2023. RESULTS: Thrombectomy was performed via the popliteal (n=10, 62.5%), femoral (n=3, 18.8%), saphenous (n=1, 6.3%), brachial (n=1, 6.3%), femoral and brachial (n=1, 6.3%) veins, with a median fluoroscopy time of 17 min (range 7.2-61min) and contrast agent volume of 110 ml (30-175 ml). Restoration of anterograde flow was achieved in all cases (100%, 16/16). Thirteen patients (81.2%) received venoplasty after thrombectomy for residual stenosis. Stents were placed in seven patients (43.8%). With a median clinical follow-up of 77 days (range 3-278 days), symptom improvement was achieved among 13/15 (86.7%) patients that initially presented with DVT associated symptoms. In 14 patients with imaging follow-up, patency was confirmed in 12 patients (85.7%). Of the two patients with complete thrombosis on follow-up imaging (14.3%), one patient was successfully treated with repeated thrombectomy using Flash technology, while the other patient was treated with systemic anticoagulation. CONCLUSIONS: Aspiration thrombectomy with this 16 Fr CA-LBT device may be a feasible option for treatment of proximal or large volume DVT.

4.
Ying Yong Sheng Tai Xue Bao ; 35(7): 1789-1798, 2024 Jul 18.
Artículo en Inglés | MEDLINE | ID: mdl-39233407

RESUMEN

To understand the effects of nitrogen deposition on element cycling and nutrient limitation status in forest ecosystems, we examined the effects of nitrogen deposition on the stoichiometric characteristics of forest soil-microbial-extracellular enzymes in Pinus yunnanensis forest. We conducted a field experiment with control (CK, 0 g N·m-2·a-1), low nitrogen (LN, 10 g N·m-2·a-1), medium nitrogen (MN, 20 g N·m-2·a-1) and high nitrogen (HN, 25 g N·m-2·a-1) since 2019. We collected soil samples (0-5 cm, 5-10 cm and 10-20 cm) at September 2022, and measured the contents of soil organic, total nitrogen, total phosphorus, microbial biomass carbon, nitrogen and phosphorus (MBC, MBN, MBP) and the activities of C, N, and P acquisition enzymes. The results showed that nitrogen deposition significantly reduced soil organic content, C:N and C:P by 6.9%-29.8%, 7.6%-45.2% and 6.5%-28.6%, and increased soil total N content and N:P by 10.0%-45.0% and 19.0%-46.0%, respectively. Nitrogen addition did not affect soil total P content. Except for soil C:N and C:P, soil nutrient content and stoichiometric ratio were highest in 0-5 cm soil layer. MN and HN treatments significantly decreased MBN by 11.0%-12.7%. MBC, MBP, and their stoichiometry did not change significantly under nitrogen deposition. Soil microbial nutrient content in 0-5 cm soil layer was significantly higher than that in other soil layers. Nitrogen deposition significantly decreased the activities of cellobiose hydrolase and leucine aminopeptidase (decreased by 14.5%-16.2% and 48.7%-66.3%). HN treatment promoted ß-1,4-glucosidase activity (increased by 68.0%), but inhibited soil enzyme stoichiometric carbon to nitrogen ratio and nitrogen to phosphorus ratio (decreased by 95.4% and 88.4%). LN and MN treatment promoted ß-1,4-N-acetylglucosaminidase activity (increased by 68.3%-116.6%), but inhibited enzyme stoichiometric carbon to phosphorus ratio (decreased by 14.9%-29.4%). Alkaline phosphatase activity had no significant change. Soil enzyme activities were significantly decreased with increasing soil depth. Soil total N and total P and microbial nutrients were negatively correlated with vector angle (representing microbial nitrogen or phosphorus limitation), while vector length (representing microbial carbon limitation) was consistently significantly positively correlated with vector angle, suggesting the synergistic promotion between microbial carbon limitation and phosphorus limitation. Nitrogen deposition gradually shifted to phosphorus limitation while alleviating microbial nitrogen limitation in P. yunnanensis forest. In addition, microbial activities in this region was limited by C availability, and the relationship between microbial C and P limitation was proportional.


Asunto(s)
Carbono , Bosques , Nitrógeno , Fósforo , Pinus , Microbiología del Suelo , Suelo , Nitrógeno/análisis , Nitrógeno/metabolismo , Pinus/crecimiento & desarrollo , Pinus/metabolismo , China , Suelo/química , Carbono/análisis , Carbono/metabolismo , Fósforo/análisis , Fósforo/metabolismo , Ecosistema
5.
Nanoscale Horiz ; 2024 Sep 06.
Artículo en Inglés | MEDLINE | ID: mdl-39240539

RESUMEN

Plasmonic nanoparticles (NPs) have played a significant role in the evolution of modern nanoscience and nanotechnology in terms of colloidal synthesis, general understanding of nanocrystal growth mechanisms, and their impact in a wide range of applications. They exhibit strong visible colors due to localized surface plasmon resonance (LSPR) that depends on their size, shape, composition, and the surrounding dielectric environment. Under resonant excitation, the LSPR of plasmonic NPs leads to a strong field enhancement near their surfaces and thus enhances various light-matter interactions. These unique optical properties of plasmonic NPs have been used to design chemical and biological sensors. Over the last few decades, colloidal plasmonic NPs have been greatly exploited in sensing applications through LSPR shifts (colorimetry), surface-enhanced Raman scattering, surface-enhanced fluorescence, and chiroptical activity. Although colloidal plasmonic NPs have emerged at the forefront of nanobiosensors, there are still several important challenges to be addressed for the realization of plasmonic NP-based sensor kits for routine use in daily life. In this comprehensive review, researchers of different disciplines (colloidal and analytical chemistry, biology, physics, and medicine) have joined together to summarize the past, present, and future of plasmonic NP-based sensors in terms of different sensing platforms, understanding of the sensing mechanisms, different chemical and biological analytes, and the expected future technologies. This review is expected to guide the researchers currently working in this field and inspire future generations of scientists to join this compelling research field and its branches.

6.
Reg Anesth Pain Med ; 2024 Sep 02.
Artículo en Inglés | MEDLINE | ID: mdl-39223097

RESUMEN

OBJECTIVE: This study aimed to optimize the formulation of magnetically targeted lidocaine microspheres, reduce the microsphere particle size, and increase the drug loading and encapsulation rate of lidocaine. The optimized microspheres were characterized, and their pharmacokinetics and effective radii of action were studied. METHODS: The preparation of magnetically targeted lidocaine microspheres was optimized using ultrasonic emulsification-solvent evaporation. The Box-Behnken design method and response surface method were used for optimization. The optimized microspheres were characterized and tested for their in vitro release. Blood concentrations were analyzed using a non-compartment model, and the main pharmacokinetic parameters (half-life (t1/2 ), maximum blood concentration, area under the blood concentration-time curve (AUC), time to peak (Tmax ), and mean retention time (MRT) were calculated. Pathological sections were stained to study the safety of the microsphere tissues. A rabbit sciatic nerve model was used to determine the "standard time (t0 )" and effective radius of the microspheres. RESULTS: The optimized lidocaine microspheres exhibited significantly reduced particle size and increased drug loading and encapsulation rates. Pharmacokinetic experiments showed that the t1/2 , Tmax , and MRT of magnetically targeted lidocaine microspheres were significantly prolonged in the magnetic field, and the AUC0-48 and AUC0-∞ were significantly decreased. Its pharmacodynamic radius was 31.47 mm. CONCLUSION: Magnetically targeted lidocaine microspheres provide sustained long-lasting release, neurotargeting, nerve blocking, and high tissue safety. This preparation has a significantly low blood concentration and a slow release in vivo, which can reduce local anesthetic entry into the blood. This may be a novel and effective method for improving postoperative comfort and treating chronic pain. This provides a countermeasure for exploring the size of the magnetic field for the application of magnetic drug-carrying materials.

7.
Adv Sci (Weinh) ; : e2400544, 2024 Sep 03.
Artículo en Inglés | MEDLINE | ID: mdl-39225336

RESUMEN

Allogeneic hematopoietic stem cell transplantation (allo-HSCT) is a widely used treatment for a variety of hematopoietic disorders, and also provides a valuable platform for investigating the development of donor-derived immune cells in recipients post-HSCT. The immune system remodels from the donor to the recipient during allo-HSCT. However, little is known about the cell profile alterations as donor homeostasis rebalances to recipient homeostasis following HSCT. Here, multi-omics technology is applied at both the single cell and bulk sample levels, as well as spectrum flow cytometry and fluorescent transgenic mouse models, to dissect the dynamics of the rebalanced homeostatic immune system in recipients after allo-HSCT. The data reveal that all immune subpopulations observed in donors are successfully restored in recipients, though with varying levels of abundance. The remodeling of immune homeostasis exhibits different patterns in HLA-matched and haploidentical HSCT, highlighting distinct biases in T cell reconstitution from the central and peripheral pathways. Furthermore, ZNF683 is critical for maintaining the persistence and quiescence of CD8 T-cell in haploidentical HSCT. The research can serve as a foundation for developing novel strategies to induce immune tolerance.

8.
J Gastrointest Oncol ; 15(4): 1777-1788, 2024 Aug 31.
Artículo en Inglés | MEDLINE | ID: mdl-39279977

RESUMEN

Background: Intrahepatic cholangiocarcinoma (iCCA) is a rare biliary tract cancer with increasing incidence and poor survival rates. This study aims to evaluate the incidence and survival trends of iCCA patients over 20 years using a national cancer database, and assess the temporal association between survival and landmark clinical trials. Methods: Data was extracted from the Surveillance, Epidemiology, and End Results (SEER) database. Age-adjusted incidence rates (AAIRs) were calculated from 2000 to 2020. Overall survival was analyzed based on diagnosis time and disease stage. Subgroup analysis was performed for patients diagnosed between 2015 and 2020. Landmark clinical trials were reviewed to determine temporal changes in survival. Results: In this analysis of 28,918 iCCA patients, the AAIR increased from 0.49 per 100,000 in 2000 to 1.38 in 2020 [annual percent change (APC) 6.94, 95% confidence interval (CI): 6.32 to 7.56], with a notable decline from 2019 to 2020. Incidence rates overall displayed an uptrend course across subgroups divided by sex, race, age, and disease stage. The age-adjusted median overall survival (mOS) improved from 5.28 months in 2000 to 9.3 months in 2013, then stabilized between 8.0-9.0 months after 2013. Using 2010 as a cutoff, when the ABC-02 trial was published, the decade-based mOS increased from 6.55 months in 2000-2010 to 9.06 months in 2010-2020. During 2015-2020, the overall mOS was 8.8 months, with mOS of 24.3, 12.1, and 5.4 months for local, regional, and distant stages, respectively. Conclusions: The study indicates a steady rise in iCCA incidence since 2000 across all subgroups. Survival rates improved since 2000 but stabilized after 2013, following the ABC-02 trial publication in 2010. The impact of more recent clinical trials on survival rates requires further analysis in the coming years.

9.
Front Immunol ; 15: 1388120, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39281685

RESUMEN

Objective: In this study, the impact of inhibiting the PI3K/AKT/NF-κB pathway on lung oxidative damage induced by Echinococcus granulosus cyst fluid was investigated. Methods: Twenty-four mice were randomly assigned to four groups. Three months after inoculation with hydatid cyst segments, mice in group A were treated with intraperitoneal and intratracheal saline injections; mice in group B were administered a caudal vein injection of a PI3K inhibitor, followed by cyst fluid sensitization; mice in group C received an AKT inhibitor via caudal vein, followed by cyst fluid sensitization; and mice in group D were subjected to cyst fluid sensitization without any inhibitor treatment. Cellular changes in lung tissues across all groups were evaluated, including pathological section analysis. Analysis of pulmonary tissue and serum from these mice included the assessment of PI3K/AKT/NF-κB pathway proteins, inflammatory factors, and related mRNA levels. Results: Mice in groups B and C exhibited a higher proportion of M2-type macrophages and significantly lower levels of PI3K/AKT/NF-κB pathway proteins, inflammatory factors (interleukin-6 [IL-6]/tumor necrosis factor-α [TNF-α]), and oxidative markers in lung tissues compared to mice in group D (P < 0.05). Conclusion: Our results in this study indicate that activation of the PI3K/AKT/NF-κB pathway contributed to an increase in the M1 macrophage phenotype, leading to enhanced secretion of peroxidases and inflammatory factors. This mechanism plays a crucial role in the oxidative and inflammatory lung damage associated with allergic reactions to E. granulosus cyst fluid.


Asunto(s)
Echinococcus granulosus , FN-kappa B , Fosfatidilinositol 3-Quinasas , Proteínas Proto-Oncogénicas c-akt , Animales , Echinococcus granulosus/inmunología , Ratones , Fosfatidilinositol 3-Quinasas/metabolismo , Proteínas Proto-Oncogénicas c-akt/metabolismo , FN-kappa B/metabolismo , Transducción de Señal , Lesión Pulmonar/inmunología , Lesión Pulmonar/etiología , Lesión Pulmonar/parasitología , Macrófagos/inmunología , Pulmón/inmunología , Pulmón/patología , Pulmón/parasitología , Equinococosis/inmunología , Modelos Animales de Enfermedad , Femenino , Citocinas/metabolismo , Estrés Oxidativo
10.
Medicine (Baltimore) ; 103(22): e38095, 2024 May 31.
Artículo en Inglés | MEDLINE | ID: mdl-39259125

RESUMEN

To explore the effect of predictive nursing on the mental state, compliance and sleep quality of elderly patients with cervicitis. The clinical data of 96 elderly patients with cervicitis who were admitted to our hospital from June 2019 to June 2021 were selected as the research objects. According to the different treatments, they were divided into a control group and an observation group with 48 cases each. Among them, the control group was given routine care, and the observation group was given predictive care on the basis of the control group. The effects of the quality of life, mental state, compliance and sleep quality of the 2 groups of patients before and after nursing were compared. Comparing the nursing compliance of the 2 groups of elderly patients with cervicitis, statistics showed that the difference was statistically significant (P < .05). After nursing, the sleep quality, increased arousal, unstable sleep, and night terrors of the 2 groups of elderly patients with cervicitis were significantly improved, and the negative emotion score of the observation group was significantly lower than that of the control group. Statistics show that this difference is statistically significant (P < .05). The comparison of the quality of life scores of the 2 groups of patients before nursing was not statistically significant (P > .05). After nursing, the mental vitality score, social interaction score, emotional restriction score, and mental status of the observation group were significantly higher than those of the control group. Statistics showed that the difference was statistically significant (P < .05). After nursing, the psychological pressure of the 2 groups of elderly patients with cervicitis was significantly improved, and the observation group fear, anxiety, desire for knowledge, fear of discrimination, despair, and low self-esteem were significantly lower than those of the control group. The difference was statistically significant (P < .05). Predictive nursing can effectively improve the quality of life and sleep of elderly patients with cervicitis, reduce psychological pressure, improve compliance and sleep quality, and benefit the prognosis and clinical treatment of patients. It has a certain reference value for the nursing of elderly patients with cervicitis.


Asunto(s)
Calidad de Vida , Calidad del Sueño , Cervicitis Uterina , Humanos , Femenino , Anciano , Cervicitis Uterina/psicología , Cooperación del Paciente , Masculino , Anciano de 80 o más Años
11.
Spectrochim Acta A Mol Biomol Spectrosc ; 325: 125113, 2024 Sep 12.
Artículo en Inglés | MEDLINE | ID: mdl-39270368

RESUMEN

The core-shell structured Ag@SiO2 nanomaterial integrated with surface-enhanced Raman scattering (SERS) spectroscopy promises a critical application in anti-counterfeiting. Security labels have been fabricated based on Ag@SiO2 embedded with Raman reporters. The Ag@SiO2 nanomaterial shows good stability and excellent anti-interference property for anti-counterfeiting. Multiple kinds of Raman probe molecules have been anchored in the Ag@SiO2 labels to provide specific and abundant encoding information. The flexible encoding security information could be controlled conveniently by adjusting probe molecules, which not only enrich the SERS information but also improve the level of anti-counterfeiting. Furthermore, the Ag@SiO2 shown excellent stability in organic solvent, and successfully used in ink for the anti-counterfeiting application.

12.
Sci China Life Sci ; 2024 Sep 09.
Artículo en Inglés | MEDLINE | ID: mdl-39269679

RESUMEN

Iron is a crucial micronutrient, and its deficiency can have detrimental effects on the health of infants. Dietary polysaccharide-iron (III) complexes (PICs) are promising for addressing iron deficiency due to their minimal adverse reactions and high iron absorption rate. This study aimed to investigate the effects of dietary Enteromorpha prolifera polysaccharide-Fe (III) complex (EP-Fe) on newborns, using 3-day weaned piglets as the iron-deficiency model. Results showed that EP-Fe improved iron levels and promoted intestinal development in piglets. Transcriptome sequencing revealed that EP-Fe increased the survival of intestinal epithelial cells under hypoxia by upregulating the expression of genes that promote the development of the vascular system. Additionally, EP-Fe enhanced the mucosal barrier functions by inhibiting myosin light chain kinase (MLCK)/phosphorylated myosin light chain (p-MLC) signaling pathway to increase the expression of intestinal tight junction proteins. Furthermore, the 16S rRNA gene sequencing of gut microbiota showed that EP-Fe promoted the enrichment of Bacteroides_fragilis and other gut microbes that can metabolize carbohydrates. In conclusion, EP-Fe is an effective iron supplement for newborns, and it can be developed as a comprehensive nutritional supplement.

13.
J Med Virol ; 96(8): e29882, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-39185672

RESUMEN

Establishing reliable noninvasive tools to precisely diagnose clinically significant liver fibrosis (SF, ≥F2) remains an unmet need. We aimed to build a combined radiomics-clinic (CoRC) model for triaging SF and explore the additive value of the CoRC model to transient elastography-based liver stiffness measurement (FibroScan, TE-LSM). This retrospective study recruited 595 patients with biopsy-proven liver fibrosis at two centers between January 2015 and December 2021. At Center 1, the patients before December 2018 were randomly split into training (276) and internal test (118) sets, the remaining were time-independent as a temporal test set (96). Another data set (105) from Center 2 was collected for external testing. Radiomics scores were built with selected features from Deep learning-based (ResUNet) automated whole liver segmentations on MRI (T2FS and delayed enhanced-T1WI). The CoRC model incorporated radiomics scores and relevant clinical variables with logistic regression, comparing routine approaches. Diagnostic performance was evaluated by the area under the receiver operating characteristic curve (AUC). The additive value of the CoRC model to TE-LSM was investigated, considering necroinflammation. The CoRC model achieved AUCs of 0.79 (0.70, 0.86), 0.82 (0.73, 0.89), and 0.81 (0.72-0.91), outperformed FIB-4, APRI (all p < 0.05) in the internal, temporal, and external test sets and maintained the discriminatory power in G0-1 subgroups (AUCs range, 0.85-0.86; all p < 0.05). The AUCs of joint CoRC-LSM model were 0.86 (0.79-0.94), and 0.81 (0.72-0.90) in the internal and temporal sets (p = 0.01). The CoRC model was useful for triaging SF, and may add value to TE-LSM.


Asunto(s)
Diagnóstico por Imagen de Elasticidad , Cirrosis Hepática , Hígado , Imagen por Resonancia Magnética , Humanos , Cirrosis Hepática/diagnóstico por imagen , Cirrosis Hepática/diagnóstico , Masculino , Femenino , Persona de Mediana Edad , Estudios Retrospectivos , Imagen por Resonancia Magnética/métodos , Adulto , Diagnóstico por Imagen de Elasticidad/métodos , Hígado/patología , Hígado/diagnóstico por imagen , Curva ROC , Aprendizaje Profundo , Anciano , Triaje/métodos
15.
Med Image Anal ; 97: 103285, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39116766

RESUMEN

We introduce the largest abdominal CT dataset (termed AbdomenAtlas) of 20,460 three-dimensional CT volumes sourced from 112 hospitals across diverse populations, geographies, and facilities. AbdomenAtlas provides 673 K high-quality masks of anatomical structures in the abdominal region annotated by a team of 10 radiologists with the help of AI algorithms. We start by having expert radiologists manually annotate 22 anatomical structures in 5,246 CT volumes. Following this, a semi-automatic annotation procedure is performed for the remaining CT volumes, where radiologists revise the annotations predicted by AI, and in turn, AI improves its predictions by learning from revised annotations. Such a large-scale, detailed-annotated, and multi-center dataset is needed for two reasons. Firstly, AbdomenAtlas provides important resources for AI development at scale, branded as large pre-trained models, which can alleviate the annotation workload of expert radiologists to transfer to broader clinical applications. Secondly, AbdomenAtlas establishes a large-scale benchmark for evaluating AI algorithms-the more data we use to test the algorithms, the better we can guarantee reliable performance in complex clinical scenarios. An ISBI & MICCAI challenge named BodyMaps: Towards 3D Atlas of Human Body was launched using a subset of our AbdomenAtlas, aiming to stimulate AI innovation and to benchmark segmentation accuracy, inference efficiency, and domain generalizability. We hope our AbdomenAtlas can set the stage for larger-scale clinical trials and offer exceptional opportunities to practitioners in the medical imaging community. Codes, models, and datasets are available at https://www.zongweiz.com/dataset.


Asunto(s)
Algoritmos , Benchmarking , Imagenología Tridimensional , Radiografía Abdominal , Tomografía Computarizada por Rayos X , Humanos , Imagenología Tridimensional/métodos , Conjuntos de Datos como Asunto
16.
ACS Appl Mater Interfaces ; 16(34): 44376-44385, 2024 Aug 28.
Artículo en Inglés | MEDLINE | ID: mdl-39145762

RESUMEN

Gene transfection, defined by the delivery of nucleic acids into cellular compartments, stands as a crucial procedure in gene therapy. While branched polyethylenimine (PEI) is widely regarded as the "gold standard" for nonviral vectors, its cationic nature presents several issues, including nonspecific protein adsorption and notable cytotoxicity. Additionally, it often fails to achieve high transfection efficiency, particularly with hard-to-transfect cell types. To overcome these challenges associated with PEI as a vector for plasmid DNA (pDNA), the photothermal agent indocyanine green (ICG) is integrated with PEI and pDNA to form the PEI/ICG/pDNA (PI/pDNA) complex for more efficient and safer gene transfection. The negatively charged ICG serves a dual purpose: neutralizing PEI's excessive positive charges to reduce cytotoxicity and, under near-infrared irradiation, inducing local heating that enhances cell membrane permeability, thus facilitating the uptake of PI/pDNA complexes to boost transfection efficiency. Using pDNA encoding vascular endothelial growth factor as a model, our system shows enhanced transfection efficiency in vitro for hard-to-transfect endothelial cells, leading to improved cell proliferation and migration. Furthermore, in vivo studies reveal the therapeutic potential of this system in accelerating the healing of infected wounds by promoting angiogenesis and reducing inflammation. This approach offers a straightforward and effective method for gene transfection, showing potentials for tissue engineering and cell-based therapies.


Asunto(s)
Verde de Indocianina , Plásmidos , Polietileneimina , Transfección , Verde de Indocianina/química , Verde de Indocianina/farmacología , Polietileneimina/química , Humanos , Transfección/métodos , Animales , Plásmidos/genética , Plásmidos/metabolismo , Plásmidos/química , Ratones , ADN/química , Factor A de Crecimiento Endotelial Vascular/metabolismo , Factor A de Crecimiento Endotelial Vascular/genética , Células Endoteliales de la Vena Umbilical Humana , Proliferación Celular/efectos de los fármacos
17.
J Alzheimers Dis ; 101(1): 337-352, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39177600

RESUMEN

Background: There are currently no uniform treatments for post-stroke comorbid cognitive impairment and depression (PSCCID). Objective: To verify whether repetitive transcranial magnetic stimulation (rTMS) can improve PSCCID symptoms and explore the underlying roles of resting-state functional magnetic resonance imaging (rs-fMRI). Methods: Thirty PSCCID patients were randomized in a 1 : 1 ratio to receive 4 weeks of rTMS (intervention group) or sham rTMS (control group) over the left dorsolateral prefrontal cortex (DLPFC). rs-fMRI was acquired to analyze the functional plasticity of brain regions at baseline and immediately after the last intervention. Results: Cognition, depression status, and neural electrophysiology were improved in both intervention and control groups after treatment (p = 0.015-0.042), and the intervention group had more significant improvement than the control group. Analysis of functional connectivities (FCs) within the default mood network (DMN) showed that the connection strength of the left temporal pole/left parahippocampal cortex and right lateral temporal cortex/right retrosplenial cortex in the intervention group were enhanced compared with its pre-intervention and that in the control group after treatment (p < 0.05), and the both FC values were positively correlated with MMSE scores (p < 0.001). The intervention group had stronger FCs within the DMN compared with the control group after treatment, and some of the enhanced FCs were correlated with the P300 latency and amplitude. Conclusions: rTMS over the left DLPFC is an effective treatment for improving both cognitive impairment and depression among patients with PSCCID. The enhanced FCs within the DMN may serve as a compensatory functional recombination to promote clinical recovery.


Asunto(s)
Disfunción Cognitiva , Depresión , Imagen por Resonancia Magnética , Accidente Cerebrovascular , Estimulación Magnética Transcraneal , Humanos , Estimulación Magnética Transcraneal/métodos , Femenino , Masculino , Disfunción Cognitiva/terapia , Disfunción Cognitiva/etiología , Persona de Mediana Edad , Depresión/terapia , Anciano , Accidente Cerebrovascular/complicaciones , Accidente Cerebrovascular/psicología , Accidente Cerebrovascular/terapia , Resultado del Tratamiento , Corteza Prefontal Dorsolateral
18.
J Vasc Access ; : 11297298241260755, 2024 Aug 09.
Artículo en Inglés | MEDLINE | ID: mdl-39126205

RESUMEN

BACKGROUND: Thrombosis of the vascular access in patients with end-stage renal disease requiring hemodialysis are common and require timely interventional procedures to restore patency. The aim of the current study was to identify factors having a significant effect on patency rates after access thrombosis. Our hypothesis was the length of time between the initial clotting of the access and the subsequent percutaneous declotting impacts the patency rates of the vascular access. METHODS: In this retrospective cohort study, patients with a clotted arteriovenous access between Jan 1, 2011, and Jan 1, 2016, were included. Demographics, access history, and associated details of the access procedure were reviewed from the electronic medical record. Statistical analysis was done using t-test and chi-square or fisher exact tests to compare arteriovenous fistulae (AVF) and arteriovenous grafts (AVG). Primary patency, defined as the time from index procedure to endpoint, was analyzed using the Kaplan-Meier method and log rank test. RESULTS: There were 883 percutaneous declotting procedures reviewed. About 351 procedures were performed in patients with an AVF and 532 with an AVG. The mean time from thrombosis to declotting was 1.71 ± 2.29 days. The overall median primary patency for both AVF and AVG was 43 days with no difference in patency between patients with AVF (39 days) versus AVG (42 days; p = 0.385). The time period from access thrombosis to declotting did not affect patency rates for either AVG or AVF (p = 0.385). On multivariable analysis, prior intervention (HR: 1.32, 95% CI: 1.14-1.53, p < 0.001) and cardiovascular disease (HR: 1.19, 95% CI: 1.03-1.37, p = 0.016) were independently associated with access patency. CONCLUSIONS: Time from thrombosis to declotting did not affect patency rates however once there was a thrombotic event, recurrent thrombosis requiring intervention was common with patency significantly decreased. Future prospective studies to validate our results and study pathogenic mechanisms of recurrent thrombosis are warranted.

19.
Sci Rep ; 14(1): 19027, 2024 08 16.
Artículo en Inglés | MEDLINE | ID: mdl-39152229

RESUMEN

Pulsed electromagnetic field (PEMF) therapy has been extensively investigated in clinical studies for the treatment of angiogenesis-related diseases. However, there is a lack of research on the impact of PEMFs on energy metabolism and mitochondrial dynamics during angiogenesis. The present study included tube formation and CCK-8 assays. A Seahorse assay was conducted to analyze energy metabolism, and mitochondrial membrane potential assays, mitochondrial imaging, and reactive oxygen species assays were used to measure changes in mitochondrial structure and function in human umbilical vein endothelial cells (HUVECs) exposed to PEMFs. Real-time polymerase chain reaction was used to analyze the mRNA expression levels of antioxidants, glycolytic pathway-related genes, and genes associated with mitochondrial fission and fusion. The tube formation assay demonstrated a significantly greater tube network in the PEMF group compared to the control group. The glycolysis and mitochondrial stress tests revealed that PEMFs promoted a shift in the energy metabolism pattern of HUVECs from oxidative phosphorylation to aerobic glycolysis. Mitochondrial imaging revealed a wire-like mitochondrial morphology in the control group, and treatment with PEMFs led to shorter and more granular mitochondria. Our major findings indicate that exposure to PEMFs accelerates angiogenesis in HUVECs, likely by inducing energy metabolism reprogramming and mitochondrial fission.


Asunto(s)
Angiogénesis , Campos Electromagnéticos , Reprogramación Metabólica , Dinámicas Mitocondriales , Humanos , Angiogénesis/efectos de la radiación , Glucólisis , Células Endoteliales de la Vena Umbilical Humana/metabolismo , Potencial de la Membrana Mitocondrial , Reprogramación Metabólica/efectos de la radiación , Mitocondrias/metabolismo , Mitocondrias/efectos de la radiación , Dinámicas Mitocondriales/efectos de los fármacos , Especies Reactivas de Oxígeno/metabolismo
20.
Toxicon ; 249: 108060, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39117157

RESUMEN

T-2 toxin is recognized as the most potent and prevalent secondary metabolite among monotrichous mycotoxins produced by Fusarium species. Multiple studies have substantiated the hepatotoxic effects of T-2 toxin. This study aimed to investigate whether NF-κB and NLRP3-mediated pyroptosis is involved in the underlying mechanism of T-2 toxin hepatotoxicity. We designed three groups of rat models, blank control; solvent control and T-2 toxin (0.2 mg/kg body weight/day), which were euthanized at week 8 after gavage staining of the toxin. Through HE staining and biochemical indicators associated with liver injury, we observed that T-2 toxin induced liver damage in rats. By Western blot analysis and qRT-PCR, we found that the expression levels of pyroptosis-related genes and proteins were significantly higher in the T-2 toxin group. In addition, we also found a significant increase in the expression of p-NF-κB protein, an upstream regulator of NLRP3. In conclusion, NF-κB and NLRP3-mediated pyroptosis may be involved in the mechanism of hepatotoxic action of T-2 toxin, which provides a new perspective.


Asunto(s)
Enfermedad Hepática Inducida por Sustancias y Drogas , FN-kappa B , Proteína con Dominio Pirina 3 de la Familia NLR , Piroptosis , Toxina T-2 , Animales , Toxina T-2/toxicidad , Piroptosis/efectos de los fármacos , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo , Proteína con Dominio Pirina 3 de la Familia NLR/genética , FN-kappa B/metabolismo , Ratas , Masculino , Enfermedad Hepática Inducida por Sustancias y Drogas/metabolismo , Ratas Sprague-Dawley , Hígado/efectos de los fármacos , Hígado/metabolismo , Hígado/patología
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