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1.
Fungal Biol ; 128(7): 2190-2196, 2024 Nov.
Article in English | MEDLINE | ID: mdl-39384288

ABSTRACT

Heavy metal Cd2+ can easily be accumulated by fungi, causing significant stress, with the fungal cell membrane being one of the primary targets. However, the understanding of the mechanisms behind this stress remains limited. This study investigated the changes in membrane lipid molecules of Pleurotus ostreatus mycelia under Cd2+ stress and the antagonistic effect of Ca2+ on this stress. Cd2+ in the growth media significantly inhibited mycelial growth, with increasing intensity at higher concentrations. The addition of Ca2+ mitigated this Cd2+-induced growth inhibition. Lipidomic analysis showed that Cd2+ reduced membrane lipid content and altered lipid composition, while Ca2+ counteracted these changes. The effects of both Cd2+ and Ca2+ on lipids are dose dependent and phosphatidylethanolamine appeared most affected. Cd2+ also caused a phosphatidylcholine/phosphatidylethanolamine ratio increase at high concentrations, but Ca2+ helped maintain normal levels. The acyl chain length and unsaturation of lipids remained unaffected, suggesting Cd2+ doesn't alter acyl chain structure of lipids. These findings suggest that Cd2+ may affect the growth of mycelia by inhibiting the synthesis of membrane lipids, particular the synthesis of phosphatidylethanolamine, providing novel insights into the mechanisms of Cd2+ stress in fungi and the role of Ca2+ in mitigating the stress.


Subject(s)
Cadmium , Calcium , Mycelium , Phosphatidylethanolamines , Pleurotus , Pleurotus/growth & development , Pleurotus/metabolism , Pleurotus/drug effects , Phosphatidylethanolamines/metabolism , Cadmium/metabolism , Cadmium/pharmacology , Mycelium/growth & development , Mycelium/drug effects , Mycelium/metabolism , Calcium/metabolism , Membrane Lipids/metabolism , Cell Membrane/drug effects , Cell Membrane/metabolism , Cell Membrane/chemistry , Culture Media/chemistry
2.
J Cell Biochem ; : e30659, 2024 Oct 06.
Article in English | MEDLINE | ID: mdl-39370596

ABSTRACT

Decreased regenerative capacity of central nervous system neurons is the main cause for failure of damaged neuron regeneration and functional recovery. Long noncoding RNAs (lncRNAs) are abundant in mammalian transcriptomes, and many time- and tissue-specific lncRNAs are thought to be closely related to specific biological functions. The promoting effect of Pim-1 gene on neural differentiation and regeneration has been documented, but the effect and mechanism of its neighbor gene Lnc-Pim1 in regulating the response of central neurons to injury remain unclear. RT-PCR in this study demonstrated that the expression of Lnc-Pim1 was upregulated in acrylamide (ACR)-induced neuronal injury. FISH and nucleus-cytoplasmic assay demonstrated that Lnc-Pim1 was mainly expressed in the neuron cytoplasm, with a small amount in the nucleus. Western blot analysis proved that Lnc-Pim1 overexpression induced by the lentivirus vector could promote neurite outgrowth in Neuro-2a cells by activating the Erk1/2 signal pathway, and improve neurite regeneration of injured neurons by upregulating GAP-43 and ß-Ⅲ tubulin protein expression. However, silencing Lnc-Pim1 expression by interfering RNA could effectively downregulate the GAP-43 and ß-Ⅲ tubulin protein expression, and inhibit neurite growth of neurons. In addition, CHIRP-MS was performed to identify several potential targets of Lnc-Pim1 involved in the regulation of neurite regeneration of injured neurons. In conclusion, our study demonstrated that Lnc-Pim1 is a potential lnc-RNA, playing an important role in regulating central nerve regeneration.

3.
Nano Lett ; 2024 Oct 02.
Article in English | MEDLINE | ID: mdl-39356651

ABSTRACT

High-performance separation materials for oil-water emulsions are crucial to environmental protection and resource recovery; however, most existing fibrous separation materials are subject to large pore size and low porosity, resulting in limited separation performance. Herein, we create high-performance membranes consisting of spherical-beaded nanofibers and nanoarchitectured networks (nano-nets) using electrostatic spinning/netting technology, for water-in-oil emulsion separation. By manipulating the nonequilibrium stretching of jets, spherical-beaded nanofibers capable of generating a robust microelectric field are fabricated as scaffolds, on which charged droplets are induced to eject and phase separate to self-assemble nano-nets with small pores. Benefiting from 3D undulating networks with cavities originating from 2D nano-nets supported by 1D spherical-beaded nanofibers, the membranes exhibit under-oil superhydrophobicity (>152°), a striking separation performance with an efficiency of >99.2% and a flux of 5775 L m-2 h-1, together with wide pressure applicability, antifouling, and reusability. This work may open up new horizons in developing fibrous materials for separation and purification.

6.
Food Chem ; 463(Pt 4): 141463, 2024 Sep 27.
Article in English | MEDLINE | ID: mdl-39362098

ABSTRACT

To characterize the interaction between banana condensed tannins (BCT) and formaldehyde as well as elucidate the involving mechanism, different techniques were utilized in the present study. Our results showed that BCT were a mixture of procyanidins and prodelphinidins with the degree of the polymerization of 2-9. With the increasing condensed tannin concentration (0.125-0.625 mg CE/mL), the formaldehyde scavenging ability of BCT (32.16-78.64 %) continuously enhanced. It was shown that formaldehyde could quench the fluorescence of BCT through a dynamic mechanism, while the binding of BCT and formaldehyde was a spontaneous process. According to the data of scavenging ability and spectroscopic analyse, the hydrophobic and covalent interactions between BCT and formaldehyde mainly contributed to the formaldehyde scavenging ability of BCT Moreover, the morphologies of BCT-formaldehyde complexes confirmed the interactions between BCT and formaldehyde as well. Therefore, BCT could be developed as promising formaldehyde scavengers during food production and processing in the future.

7.
Adv Sci (Weinh) ; : e2405463, 2024 Oct 11.
Article in English | MEDLINE | ID: mdl-39392368

ABSTRACT

Oral ulcers can be addressed using various biomaterials designed to deliver medications or cytokines. Nevertheless, the effectiveness of these substances is frequently limited in many patients due to poor adherence, short retention time in the mouth, and less-than-optimal drug efficacy. In this study, a new hydrogel patch (FSH3) made of a silk fibroin/hyaluronic acid matrix with light-sensitive adhesive qualities infused with ferric iron/shikonin nanoparticles to enhance healing effects is presented. Initially, this hydrogel forms an adhesive barrier over mucosal lesions through a straightforward local injection, solidifying when exposed to UV light. Subsequently, FSH3 demonstrates superior reactive oxygen species elimination and near-infrared photothermal bactericidal activity. These characteristics support bacterial elimination and regulate oxidative levels, promoting a wound's progression from inflammation to tissue regeneration. In a diabetic rat model mimicking oral ulcers, FSH3 significantly speeds up healing by adjusting the inflammatory environment of the injured tissue, maintaining balance in oral microbiota, and promoting faster re-epithelialization. Overall, the light-sensitive FSH3 hydrogel shows potential for rapid wound recovery and may transform therapeutic methods for managing oral ulcers in diabetes.

8.
Heliyon ; 10(18): e37769, 2024 Sep 30.
Article in English | MEDLINE | ID: mdl-39309825

ABSTRACT

Objectives: The aim of this study is to elucidate the functional mechanism of the miRNA-424-5p/CHEK1 pathway in hepatocellular carcinoma (HCC), thereby offering novel insights for the development of targeted therapeutic strategies for HCC. Methods: We employed a combination of bioinformatics analysis and data from the GEO to construct a regulatory network between miRNA and mRNA. Real-time quantitative polymerase chain reaction (RT-qPCR) was utilized to assess the expression levels of miR-424-5p and CHEK1. Protein expression of CHEK1 was determined using Western blot analysis. The targeting relationship between miR-424-5p and CHEK1 was validated through a dual-luciferase reporter assay. Furthermore, the effects of miR-424-5p on HCC cell proliferation, migration, and invasion were evaluated using the Cell Counting Kit-8 assay, wound healing assay, and Transwell invasion assay, respectively. Apoptosis of HCC cells was measured by flow cytometry. Results: Bioinformatics analysis revealed that miR-424-5p was significantly downregulated, while CHEK1 was upregulated respectively in GEO dataset. Furthermore, this inverse expression pattern was observed in both HCC tissues and cell lines. Specifically, downregulation of miR-424-5p was found to promote the proliferation, migration, and invasion of HCC cells, while also inhibiting their apoptosis. The dual-luciferase reporter assay confirmed a direct targeting relationship between miR-424-5p and CHEK1. Inhibition of miR-424-5p was shown to counteract the suppressive effects on HCC cell proliferation, migration, and invasion that result from CHEK1 silencing. Additionally, experimental verification indicated that the activation of the cell cycle pathway is implicated in the oncogenic function of miR-424-5p/CHEK1 in HCC. Conclusions: The present study demonstrates that miR-424-5p exerts a suppressive effect on HCC cell proliferation, migration, and invasion by downregulating the expression of CHEK1. This finding may offer a theoretical foundation for improving the prognosis and developing novel therapeutic strategies for HCC patients.

9.
Plants (Basel) ; 13(17)2024 Aug 30.
Article in English | MEDLINE | ID: mdl-39273917

ABSTRACT

Macroalgal biomass blooms, including those causing the green and golden tides, have been rising along Chinese coasts, resulting in considerable social impacts and economic losses. To understand the links between the ongoing climate changes (ocean warming and acidification) and algal tide formation, the effects of temperature (20 and 24 °C), pCO2 concentration (Partial Pressure of Carbon Dioxide, 410 ppm and 1000 ppm) and their interaction on the growth of Ulva prolifera and Ulva lactuca (green tide forming species), as well as Sargassum horneri (golden tide forming species) were investigated. The results indicate that the concurrent rises in temperature and pCO2 level significantly boosted the growth and nutrient uptake rates of U. lactuca. For U. prolifera, the heightened growth and photosynthetic efficiency under higher CO2 conditions are likely due to the increased availability of inorganic carbon. In contrast, S. horneri exhibited negligible responsiveness to the individual and combined effects of the increased temperature and CO2 concentration. These outcomes indicate that the progressive climate changes, characterized by ocean warming and acidification, are likely to escalate the incidence of green tides caused by Ulva species, whereas they are not anticipated to precipitate golden tides.

11.
Waste Manag ; 189: 290-299, 2024 Dec 01.
Article in English | MEDLINE | ID: mdl-39222552

ABSTRACT

This study proposes a comprehensive evaluation method based on a two-stage model to assess greenhouse gas (GHG) emissions and reductions in high-food-waste-content (HFWC) municipal solid waste (MSW) landfills. The proposed method considers typical processes such as fugitive landfill gas (LFG), LFG collection, flaring, power generation, and leachate treatment. A case study of an HFWC MSW landfill in eastern China is considered to illustrate the evaluation. The findings revealed that the GHG emissions equivalent of the case landfill amounted to 21.23 million tons from 2007 to 2022, averaging 1.03 tons CO2-eq per ton of MSW. There was a potential underestimation of LFG generation at the landfill site during the initial stages, which led to delayed LFG collection and substantial fugitive LFG emissions. Additionally, the time distribution of GHG emissions from HFWC MSW was significantly different from that of low-food-waste-content (LFWC) MSW landfills, with peak emissions occurring much earlier. Owing to the rapid degradation characteristics of HFWC MSW, the cumulative LFG production of the landfill by 2022 (2 years after the final cover) was projected to reach 77 % of the total LFG potential. In contrast, it would take until 2030 for LFWC MSW landfills to reach this level. Furthermore, various scenarios were analyzed, in which if the rapid LFG generation characteristics of HFWC MSW are known in advance, and relevant facilities are constructed ahead of time, the collection efficiency can be improved from 31 % to over 78 %, resulting in less GHG emissions.


Subject(s)
Greenhouse Gases , Refuse Disposal , Solid Waste , Waste Disposal Facilities , China , Greenhouse Gases/analysis , Refuse Disposal/methods , Solid Waste/analysis , Air Pollutants/analysis , Environmental Monitoring/methods , Food
12.
Front Med (Lausanne) ; 11: 1398623, 2024.
Article in English | MEDLINE | ID: mdl-39281818

ABSTRACT

Objective: This study aims to analyze the value of prenatal ultrasound in the screening, diagnosis, and treatment of double aortic arch (DAA) malformations. Methods: A retrospective analysis was conducted on 31 fetal cases with double aortic arch anomalies over a 12-year period from June 1, 2011 to June 1, 2023. The assessment included combined measurements of fetal tracheal internal diameter Z-score and DAA pinch angle, along with ultrasonographic findings, associated anomalies, genetic abnormalities, postnatal CTA images, and long-term postnatal outcomes. Results: Of the 31 fetal double aortic arch cases, 15 were right aortic arch dominant, 2 were left aortic arch dominant, and 14 had a balanced double arch. Genetic testing was performed on 19 cases, revealing abnormalities in 2 cases, including one Turner syndrome, and one carrier of ichthyosis gene with heterozygous deletion. Out of the total cases, 29 were delivered, and 2 cases were terminated. Prenatal diagnosis accurately identified 29 cases (29/31, 93.5%), which was confirmed by postnatal pathological anatomy, echocardiography, surgery or CTA. Fetal tracheal internal diameter Z-scores were significantly smaller in the symptomatic group than in the asymptomatic group (-1.27 ± 0.49 vs -0.68 ± 0.60, P = 0.018). The area under the curve was 0.776 (95% confidence interval, 0.593-0.960) using a tracheal internal diameter z-score cutoff of -0.73 with a sensitivity of 90% and specificity of 64.7%. The double arch pinch angle was significantly smaller in the symptomatic group than in the asymptomatic group [52.50° (38.25° to 59.00°) vs 60.00° (53.50° to 70.50°), P = 0.035]. The area under the curve was 0.744 (95% confidence interval, 0.554-0.935), and the sensitivity for determining the presence or absence of symptoms was 90% when the cutoff value was 62.5°, with a specificity of 47.1%. Fifteen cases opted for surgery with favorable surgical outcome. Conclusion: Prenatal echocardiography demonstrates good diagnostic efficacy for fetal double aortic arch. It is also essential to detect the presence of other underlying intra- and extracardiac malformations and genetic abnormalities. There is a significant difference in prenatal tracheal internal diameter Z-scores and double arch pinch angle between asymptomatic and symptomatic DAA infants. Symptomatic infants require early surgery, while asymptomatic infants should be monitored.

13.
Int J Biol Macromol ; 279(Pt 3): 135397, 2024 Nov.
Article in English | MEDLINE | ID: mdl-39245115

ABSTRACT

Food gel is a kind of macromolecular biopolymer with viscoelasticity, which has good water retention and gelling ability, especially gels formed by protein and/or polysaccharide. The addition of calcium ions triggers gelation by interacting with the gel matrix, enhancing gels' textural and rheological properties like hardness, viscosity and elasticity. Thus calcium ions enrich the range of applications of food gels. This review focuses on forming a calcium-induced gel and improving the texture properties. It summarizes the mechanisms of gelation induced by calcium ions in polysaccharide, protein, and polysaccharide-protein systems and their gel properties. The effects of influencing factors in calcium ion concentration, types and mixing ratios of matrices, acid, and alkaline environments, as well as treatment methods on calcium-induced gel characteristics, are presented. Additionally, the current applications of calcium-induced gels in food industries and challenges are presented.


Subject(s)
Calcium , Gels , Polysaccharides , Polysaccharides/chemistry , Gels/chemistry , Calcium/chemistry , Rheology , Proteins/chemistry , Viscosity , Food , Ions/chemistry
14.
Front Immunol ; 15: 1445209, 2024.
Article in English | MEDLINE | ID: mdl-39346922

ABSTRACT

Introduction: Epstein-Barr virus (EBV) is an oncogenic human herpesvirus associated with ~350,000 cases of lymphoid and epithelial malignancies every year, and is etiologically linked to infectious mononucleosis and multiple sclerosis. Despite four decades of research, no EBV vaccine candidate has yet reached licensure. Most previous vaccine attempts focused on a single viral entry glycoprotein, gp350, but recent data from clinical and pre-clinical studies, and the elucidation of viral entry mechanisms, support the inclusion of multiple entry glycoproteins in EBV vaccine design. Methods: Here we generated a modified vaccinia Ankara (MVA)-vectored EBV vaccine, MVA-EBV5-2, that targets five EBV entry glycoproteins, gp350, gB, and the gp42gHgL complex. We characterized the genetic and translational stability of the vaccine, followed by immunogenicity assessment in BALB/c mice and rhesus lymphocryptovirus-negative rhesus macaques as compared to a gp350-based MVA vaccine. Finally, we assessed the efficacy of MVA-EBV5-2-immune rhesus serum at preventing EBV infection in human CD34+ hematopoietic stem cell-reconstituted NSG mice, under two EBV challenge doses. Results: The MVA-EBV5-2 vaccine was genetically and translationally stable over 10 viral passages as shown by genetic and protein expression analysis, and when administered to female and male BALB/c mice, elicited serum EBV-specific IgG of both IgG1 and IgG2a subtypes with neutralizing activity in vitro. In Raji B cells, this neutralizing activity outperformed that of serum from mice immunized with a monovalent MVA-vectored gp350 vaccine. Similarly, MVA-EBV5-2 elicited EBV-specific IgG in rhesus macaques that were detected in both serum and saliva of immunized animals, with serum antibodies demonstrating neutralizing activity in vitro that outperformed serum from MVA-gp350-immunized macaques. Finally, pre-treatment with serum from MVA-EBV5-2-immunized macaques resulted in fewer EBV-infected mice in the two challenge experiments than pretreatment with serum from pre-immune macaques or macaques immunized with the monovalent gp350-based vaccine. Discussion: These results support the inclusion of multiple entry glycoproteins in EBV vaccine design and position our vaccine as a strong candidate for clinical translation.


Subject(s)
Antibodies, Neutralizing , Antibodies, Viral , Epstein-Barr Virus Infections , Herpesvirus 4, Human , Macaca mulatta , Animals , Humans , Antibodies, Neutralizing/immunology , Antibodies, Neutralizing/blood , Epstein-Barr Virus Infections/immunology , Epstein-Barr Virus Infections/prevention & control , Mice , Herpesvirus 4, Human/immunology , Antibodies, Viral/immunology , Antibodies, Viral/blood , Mice, Inbred BALB C , Vaccines, DNA/immunology , Female , Viral Vaccines/immunology , Viral Vaccines/administration & dosage , Genetic Vectors/genetics , Vaccinia virus/immunology , Vaccinia virus/genetics
15.
Macromol Rapid Commun ; : e2400673, 2024 Sep 28.
Article in English | MEDLINE | ID: mdl-39340484

ABSTRACT

2D covalent organic frameworks (COFs) are attractive for fluorescence sensing due to their lightweight, robust, and highly ordered porous structures. However, the highly conjugated structures between adjacent layers of covalent organic frameworks can often result in aggregation-caused quenching (ACQ) properties. Here, the study designs two flexible hydrazone-linked COFs to suppress ACQ effects, thereby enhancing their luminescent activities. Furthermore, the high density of nitrogen and oxygen atoms on these flexible walls serves as binding sites for hydrogen bonding interactions, indicating sensitivity and selectivity towards 2,4,6-trinitrophenol detection.

16.
Comput Biol Med ; 182: 109198, 2024 Sep 27.
Article in English | MEDLINE | ID: mdl-39341110

ABSTRACT

The spleen constantly clears altered red blood cells (RBCs) from the circulation, tuning the balance between RBC formation (erythropoiesis) and removal. The retention and elimination of RBCs occur predominantly in the open circulation of the spleen, where RBCs must cross submicron-wide inter-endothelial slits (IES). Several experimental and computational studies have illustrated the role of IES in filtrating the biomechanically and morphologically altered RBCs based on a rigid wall assumption. However, these studies also reported that when the size of IES is close to the lower end of clinically observed sizes (less than 0.5 µm), an unphysiologically large pressure difference across the IES is required to drive the passage of normal RBCs, sparking debates on the feasibility of the rigid wall assumption. In this work, We propose two deformable IES models, namely the passive model and the active model, aiming to explore the impact of the deformability of IES on the filtration function of the spleen. In the passive model, we implement the worm-like string model to depict the IES's deformation as it interacts with blood plasma and allows RBC to traverse. In contrast, the active model involved regulating the IES deformation based on the local pressure surrounding the slit. To demonstrate the validity of the deformable model, we simulate the filtration of RBCs with varied size and stiffness by IES under three scenarios: (1) a single RBC traversing a single slit; (2) a suspension of RBCs traversing an array of slits, mimicking in vitro spleen-on-a-chip experiments; (3) RBC suspension passing through the 3D spleen filtration unit known as'the splenon'. Our simulation results of RBC passing through a single slit show that the deformable IES model offers more accurate predictions of the critical cell surface area to volume ratio that dictate the removal of aged RBCs from circulation compared to prior rigid-wall models. Our biophysical models of the spleen-on-a-chip indicate a hierarchy of filtration function stringency: rigid model > passive model > active model, providing a possible explanation of the filtration function of IES. We also illustrate that the biophysical model of 'the splenon' enables us to replicate the ex vivo experiments involving spleen filtration of malaria-infected RBCs. Taken together, our simulation findings indicate that the deformable IES model could serve as a mesoscopic representation of spleen filtration function closer to physiological reality, addressing questions beyond the scope of current experimental and computational models and enhancing our understanding of the fundamental flow dynamics and mechanical clearance processes within in the human spleen.

17.
Comp Immunol Microbiol Infect Dis ; 113: 102244, 2024 Sep 27.
Article in English | MEDLINE | ID: mdl-39342817

ABSTRACT

Members of the genus Bocaparvovirus have a significant impact on human health and can infect a wide range of hosts, increasing the likelihood of crossing species barriers. Among the various mammalian hosts, rodents are widely recognized as important reservoirs for emerging and zoonotic viruses. However, despite recent reports of bocavirus infections in rodents, our current understanding of rat bocavirus (RBoV) genetic diversity and evolution is limited. In this study, rodent samples were collected from the urban areas of Guangzhou city, Southern China, to investigate the presence and genetic diversity of RBoV. Through PCR-based screening of 296 rodent spleens, 54 samples were determined to be positive for RBoV infection, and 12 nearly complete genome sequences of RBoV were recovered. Phylogenetic analysis revealed distinct lineages and sub-lineages of RBoV, and six recombination events with strong statistical support were identified, with five of these events involving sequences obtained from this study. These results highlight the genetic diversity of RBoV circulating in rodents in Guangzhou city and emphasize the importance of extensive surveillance to gain a better understanding of RBoV epidemiology, evolutionary characteristics, and potential for cross-species transmission.

18.
BMC Ophthalmol ; 24(1): 416, 2024 Sep 27.
Article in English | MEDLINE | ID: mdl-39333941

ABSTRACT

BACKGROUND: To examine if pregnancy affects the prognosis of uveal melanoma (UM) patients undergoing plaque brachytherapy (PBT) and to assess if PBT has any subsequent impact on pregnancy outcomes. METHODS: A retrospective, single-center study was carried out at Beijing Tongren Hospital, focusing on women of childbearing age diagnosed with UM and treated with iodine-125 plaque brachytherapy. Both the outcomes of pregnancies and the health status of the fetuses were monitored. Survival analyses were conducted using the Kaplan-Meier method, with endpoints being metastasis and death. RESULTS: A total of 13 patients who had full-term pregnancies and 96 non-pregnant women matched by age and tumor size were included. The mean follow-up time was 67.0 ± 27.7 months (median:66.0 months, range:21.0 to 116.0 months). In the pregnant group, two patients developed metastases, one of whom died shortly after delivery; local recurrence of UM occurred in 2 patients after or during delivery, and 2 other patients developed secondary glaucoma due to radiation retinopathy. None of the other pregnant patients reported any signs of disease progression. In the control group, 18 metastasis cases including 12 deaths were documented. Pregnant patients and matched control subjects showed no statistical difference in both Metastasis-free survival (hazard ratio (HR): 0.66, 95% confidence interval (CI): 0.15-2.86; P = 0.576) and overall survival (HR: 0.48, 95% CI: 0.06-3.66; P = 0.464). All pregnant patients carried the pregnancy to term and delivered healthy children with no report of placental or infant metastases to date. CONCLUSION: Pregnancy does not appear to negatively impact the prognosis of UM patients undergoing PBT. PBT showed no observable detriment to maternal fertility and exhibited no teratogenic effects on the fetus. However, the long-term implications of PBT on pregnancy remain uncertain, necessitating additional, prolonged follow-up studies.


Subject(s)
Brachytherapy , Melanoma , Pregnancy Outcome , Uveal Neoplasms , Humans , Female , Brachytherapy/methods , Uveal Neoplasms/radiotherapy , Uveal Neoplasms/mortality , Pregnancy , Melanoma/radiotherapy , Melanoma/mortality , Retrospective Studies , Adult , Follow-Up Studies , Iodine Radioisotopes/therapeutic use , Young Adult , Pregnancy Complications, Neoplastic/radiotherapy , Pregnancy Complications, Neoplastic/mortality , Survival Rate/trends , Prognosis , Middle Aged
19.
Sci Rep ; 14(1): 22513, 2024 Sep 28.
Article in English | MEDLINE | ID: mdl-39341833

ABSTRACT

In this paper, a high-gain low-switching-stress coupled-inductor with high voltage step-up voltage multiplier cells quadratic boost converter (VMC-QBC) is proposed. The turn ratio of the coupled inductors and the switch duty cycle increase the dynamic gain, and the two degrees of freedom adjustment and modularity of the voltage multiplier cells (VMC) make the structure more flexible. The use of the same drive signal for both switches makes control easier. While achieving multi-stage boosting and multiplication boosting from low to medium duty cycle, the passive clamping circuit absorbs the energy leaked by the coupled inductor, thus reducing the stress on the switching tube and alleviating the diode reverse recovery problem. A non-ideal model with parasitic parameters is developed to analyse the real voltage gain and the converter losses to give design guidelines. A 300 W prototype is designed and tested. The state space model of the converter is established and the working principle is analysed. Compared to other high-gain quadratic boost converters, the proposed converter has continuous input current, common ground characteristics, and high voltage gain at low to medium duty cycles to accommodate integrated multi-energy storage systems.

20.
Biochim Biophys Acta Rev Cancer ; 1879(6): 189187, 2024 Sep 22.
Article in English | MEDLINE | ID: mdl-39317271

ABSTRACT

Intercellular adhesion molecule-1 (ICAM-1) is a versatile molecule that plays a critical role in various physiological and pathological processes, particularly in tumor development where its impact is bidirectional. On the one hand, it augments the immune response by promoting immune cell migration, infiltration, and the formation of immunological synapses, thus facilitating potent antitumor effects. Simultaneously, it contributes to tumor immune evasion and influences metastasis by mediating transendothelial migration (TEM), epithelial-to-mesenchymal transition (EMT), and epigenetic modification of tumor cells. Despite its significant potential, the full clinical utility of ICAM-1 has yet to be fully realized. In this review, we thoroughly examine recent advancements in understanding the role of ICAM-1 in tumor development, its relevance in predicting therapeutic efficacy and prognosis, as well as the progress in clinical translational research on anti-ICAM-1-based therapies, encompassing including monoclonal antibodies, immunotherapy, antibody-drug conjugate (ADC), and conventional treatments. By shedding light on these innovative strategies, we aim to underscore ICAM-1's significance as a valuable and multifaceted target for cancer treatment, igniting enthusiasm for further research and facilitating translation into clinical applications.

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