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1.
Heliyon ; 10(7): e28441, 2024 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-38590909

RESUMEN

Background: Fatty acid oxidation (FAO) is considered to play a vital part in tumor metabolic reprogramming. But the comprehensive description of FAO dysregulation in tumors has not been unknown. Methods: We obtained FAO genes, RNA-seq data and clinical information from the Msigdb, TCGA and GTEx databases. We assessed their prognosis value using univariate cox analysis, survival analysis and Kaplan-Meier curve. We determined the function of FAO genes using gene set variation analysis. The correlation analysis was calculated by corrplot R package. Immunotherapy response was assessed through TIDE scores. The protein expression levels of FAO genes were validated using immunohistochemistry (IHC). Results: The FAO scores were highest in COAD but lowest in PCPG. FAO scores were significantly associated with the prognosis of some cancers in OS, DSS, DFI and PFI. Besides, gene set variation analysis identified that FAO scores were related to immune-related pathways, and immune infiltration analysis showed FAO scores were positively related to cancer-associated fibroblasts and various immune-related genes. TIDE scores were significantly decreased in ACC, CHOL, ESCA, GBM, LAML, SARC, SKCM and THCA compared with normal samples, while it was significantly increased in BLCA, LUAD, LUSC, PCPG, PRAD and STAD. Besides, most FAO genes were downregulated in pan-cancer compared with normal samples. Moreover, we found copy number variation (CNV) of FAO genes played a positive role in their mRNA expression, while methylation was negative. We determined FAO genes were closely related to some drugs in pan-cancer. Conclusions: FAO score is a novel and promising factor for predicting outcomes.

2.
J Environ Manage ; 350: 119643, 2024 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-38006644

RESUMEN

Comprehending endangered species' spatial distribution in response to global climate change (GCC) is of great importance for formulating adaptive management, conservation, and restoration plans. However, it is regrettable that previous studies mainly focused on geoclimatic species, while neglected climate-sensitive subterranean taxa to a large extent, which clearly hampered the discovery of universal principles. In view of this, taking the endemic troglophile riverine fish Onychostoma macrolepis (Bleeker, 1871) as an example, we constructed a MaxEnt (maximum-entropy) model to predict how the spatial distribution of this endangered fish would respond to future climate changes (three Global Climate Models × two Shared Socio-economic Pathways × three future time nodes) based on painstakingly collected species occurrence data and a set of bioclimatic variables, including WorldClim and ENVIREM. Model results showed that variables related to temperature rather than precipitation were more important in determining the geographic distribution of this rare and endemic fish. In addition, the suitable areas and their distribution centroids of O. macrolepis would shrink (average: 20,901.75 km2) and move toward the northeast or northwest within the study area (i.e. China). Linking our results with this species' limited dispersion potential and unique habitat requirements (i.e. karst landform is essential), we thus recommended in situ conservation to protect this relict.


Asunto(s)
Cambio Climático , Ecosistema , Animales , Especies en Peligro de Extinción , Temperatura , China
3.
Molecules ; 28(21)2023 Nov 02.
Artículo en Inglés | MEDLINE | ID: mdl-37959809

RESUMEN

The technique of gold collection in matte can effectively improve the trapping efficiency of precious metals such as gold, silver, and platinum. However, the underlying mechanism of gold collection from high-temperature molten matte is complex and not well understood. In this work, the first-principle calculations were utilized to investigate the adsorption behavior of gold atoms on a Cu2S surface. The effects of vacancies and As and Sb doping on the gold-trapping ability of Cu2S were also explored, and the electronic properties of each adsorption system, including the charge density difference, density of states, and charge transfer, were systematically analyzed. The results show that the Cu-terminated Cu2S(111) surface has the lowest surface energy, and the Au atom is chemically adsorbed on the Cu2S(111) with an adsorption energy of -1.99 eV. The large adsorption strength is primarily ascribed to the strong hybridizations between Au-5d and Cu-3d orbitals. Additionally, the Cu vacancy can significantly weaken the adsorption strength of Cu2S(111) towards Au atoms, while the S vacancy can notably enhance it. Moreover, due to the formation of strong covalent As-Au/Sb-Au bonds, doping As and Sb into Cu2S(111) can enhance the gold-trapping capability of Cu2S, and the Sb doping exhibits superior effectiveness. Our studied results can provide theoretical guidance for improving the gold collection efficiency of Cu2S.

4.
PLoS One ; 18(10): e0293022, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37844120

RESUMEN

The development of green finance and the promotion of green transformation and upgrading of high energy-consuming enterprises are of great significance for China to achieve the "double carbon" goal. This paper employs a dual fixed-effects model to examine the profound ramifications and intrinsic mechanisms of green finance development on the transformative innovation of high-energy-consumption enterprises, using a sample of 462 publicly traded high-energy-consuming corporations from the period spanning 2016 to 2020. The results show that the development of green finance promotes the transformation and innovation of energy-intensive enterprises and that market-incentivized environmental regulation plays a partially mediating role; the results of heterogeneity analysis show that green finance promotes the transformation and innovation of high energy-consuming enterprises with significant differences in different low-carbon pilot regions, company ownership, and enterprise size; the mechanism analysis shows that the development of green finance can increase government subsidies and alleviate financing constraints to promote the transformation and innovation of high energy-consuming enterprises; it is also found that the development of green finance can significantly improve the financial performance of enterprises. The research findings of this paper hold significant implications for promoting the sustainable development of green finance and high-energy consumption enterprises in China. They provide valuable insights and references for facilitating the green transformation and innovation of high-energy-consuming enterprises in China as well as other developing countries.


Asunto(s)
Carbono , Fenómenos Fisiológicos , China , Propiedad , Fenómenos Físicos
5.
Heliyon ; 9(10): e20189, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37810800

RESUMEN

Demand response (DR) is one of the most effective and economical methods for power operators to improve network reliability in face of uncertainty and emergencies. In this paper, considering the uncertainty of wind power output and the failure of power system components, a two-stage security-constrained unit commitment (SCUC) model is established by optimizing the real-time pricing mechanism to indirectly adjust the DR. Firstly, the uncertainty of wind power output is modeled based on self-organizing map (SOM), and the component failure of the power system is modeled based on Monte Carlo. Then, a pricing scheme is proposed to stimulate users' electricity consumption behavior. Finally, the marine predator algorithm is used to solve the problem. Simulation results on IEEE-RTS system show that the proposed method can reduce the total operating cost by 10%, effectively stimulate the electricity consumption behavior of users, to improve the peak load shifting and valley filling capacity of the power system.

6.
Front Immunol ; 14: 1130738, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37662927

RESUMEN

Introduction: Endometriosis is a worldwide gynacological diseases, affecting in 6-10% of women of reproductive age. The aim of this study was to investigate the gene network and potential signatures of immune infiltration in endometriosis. Methods: The expression profiles of GSE51981, GSE6364, and GSE7305 were obtained from the Gene Expression Omnibus (GEO) database. Core modules and central genes related to immune characteristics were identified using a weighted gene coexpression network analysis. Bioinformatics analysis was performed to identify central genes in immune infiltration. Protein-protein interaction (PPI) network was used to identify the hub genes. We then constructed subtypes of endometriosis samples and calculated their correlation with hub genes. qRTPCR and Western blotting were used to verify our findings. Results: We identified 10 candidate hub genes (GZMB, PRF1, KIR2DL1, KIR2DL3, KIR3DL1, KIR2DL4, FGB, IGFBP1, RBP4, and PROK1) that were significantly correlated with immune infiltration. Our study established a detailed immune network and systematically elucidated the molecular mechanism underlying endometriosis from the aspect of immune infiltration. Discussion: Our study provides comprehensive insights into the immunology involved in endometriosis and might contribute to the development of immunotherapy for endometriosis. Furthermore, our study sheds light on the underlying molecular mechanism of endometriosis and might help improve the diagnosis and treatment of this condition.


Asunto(s)
Endometriosis , Hormonas Gastrointestinales , Factor de Crecimiento Endotelial Vascular Derivado de Glándula Endocrina , Humanos , Femenino , Endometriosis/genética , Western Blotting , Biología Computacional , Bases de Datos Factuales , Redes Reguladoras de Genes , Proteínas Plasmáticas de Unión al Retinol
7.
Int J Biol Macromol ; 253(Pt 2): 126841, 2023 Dec 31.
Artículo en Inglés | MEDLINE | ID: mdl-37696368

RESUMEN

The natural characteristics of protein/polysaccharide-based hydrogels, as a potential drug delivery platform, have attracted extensive attention. Probiotics have attracted renewed interest in drug research because of their beneficial effects on host health. The idea of using probiotics loaded on protein/polysaccharide-based hydrogels as potential drugs to treat different diseases has been put forward and shows great prospects. Based on this, in this review, we highlight the design strategy of hydrogels loaded probiotic-mediated therapy systems and review the potential diseases that have been proved to be treatable in the laboratory, including promoting wound healing and improving intestinal health and vaginal health, and discuss the challenges existing in the current design.


Asunto(s)
Hidrogeles , Polisacáridos , Hidrogeles/farmacología , Polisacáridos/farmacología , Cicatrización de Heridas , Sistemas de Liberación de Medicamentos
8.
Int J Technol Assess Health Care ; 39(1): e53, 2023 Aug 31.
Artículo en Inglés | MEDLINE | ID: mdl-37650314

RESUMEN

OBJECTIVES: The latest international guideline recommended the add-on therapy of ezetimibe and PCSK9 inhibitors in selected people for the secondary prevention of cardiovascular diseases (CVDs). However, it remains unclear whether these regimens fit the Chinese healthcare system economically. METHODS: Based on the Chinese context, this simulation study evaluated four therapeutic strategies including the high-dose statin-only group, ezetimibe plus statin group, PCSK9 inhibitors plus statin group, and PCSK9 inhibitors plus ezetimibe plus statin group. The team developed a Markov model to estimate the incremental cost-effectiveness ratio (ICER). With each 1-yr cycle, the simulation subjects could have nonfatal cardiovascular events (stroke and/or myocardial infarction) or death (vascular or nonvascular death event) with a follow-up duration of 20 yr. Cardiovascular risk reduction was gathered from a network meta-analysis, and cost and utility data were gathered from hospital databases and published research. RESULTS: For Chinese adults receiving high-dose statins for secondary prevention of CVDs, the ICER was US$68,910 per quality-adjusted life year (QALY) for adding PCSK9 inhibitors, US$20,242 per QALY for adding ezetimibe, US$51,552 per QALY for adding both drugs. Given a threshold of US$37,655 (three times of Chinese GDP), the probability of cost-effectiveness is 2.9 percent for adding PCSK9 inhibitors, 53.1 percent for adding ezetimibe, and 16.8 percent for adding both drugs. To meet the cost-effectiveness, an acquisition price reduction of PCSK9 inhibitors of 33.6 percent is necessary. CONCLUSION: In Chinese adults receiving high-dose statins for the secondary prevention of CVDs, adding ezetimibe is cost-effective compared to adding PCSK9 inhibitors and adding both drugs.


Asunto(s)
Enfermedades Cardiovasculares , Inhibidores de Hidroximetilglutaril-CoA Reductasas , Adulto , Humanos , Enfermedades Cardiovasculares/prevención & control , Análisis Costo-Beneficio , Ezetimiba/uso terapéutico , Inhibidores de Hidroximetilglutaril-CoA Reductasas/uso terapéutico , Inhibidores de PCSK9 , Proproteína Convertasa 9 , Prevención Secundaria , Pueblos del Este de Asia
9.
Artículo en Inglés | MEDLINE | ID: mdl-37643563

RESUMEN

Long noncoding RNAs (lncRNAs), which are RNA molecules that do not code for proteins and have a length exceeding 200 base pairs, have been found to play a crucial role in regulating intestinal immunity. The high mortality of various fish species induced by high temperatures is known to be associated with enteritis. Our investigation demonstrated that acute heat stress was responsible for inducing fish enteritis. However, the specific lncRNAs involved this process remains unknown. In this current study, we utilized intestinal sequencing data from the largemouth bass species Micropterus salmoides under acute heat stress, resulting in a total of 347,351,492 clean reads obtained from six cDNA libraries. A total of 3399 novel lncRNA transcripts originating from 2488 distinct lncRNA genes were successfully identified. Consistent with previous findings in other fish species, these lncRNAs demonstrated comparatively shorter transcript lengths when compared to protein-coding genes. Furthermore, a total of 216 novel lncRNA exhibited differential expression (DE) in the intestine of largemouth bass, meeting the criteria of absolute log2 fold change exceeding 2 and a p-value below 0.05. Additionally, these DE-lncRNAs were found to regulate 210 neighboring genes in a cis-regulatory manner. An examination of GO/KEGG enrichment revealed a notable enrichment of immune regulation (p < 0.05) among these cis-genes, with lncRNA MSTRG.8573.1 playing a significant role in regulating the jak-stat signaling pathway during this process. This study presents a comprehensive inventory of novel DE-lncRNA implicated in the development of enteritis in largemouth bass under acute heat stress. These findings offer valuable insights for future investigations on the regulation of lncRNAs to mitigate heat stress-induced fish enteritis.


Asunto(s)
Lubina , Enteritis , ARN Largo no Codificante , Animales , Lubina/genética , ARN Largo no Codificante/genética , Intestinos , Enteritis/genética , Enteritis/veterinaria
10.
Artículo en Inglés | MEDLINE | ID: mdl-37394130

RESUMEN

Ammonia is one of the most serious environmental stressors which severely affect fishery production. Ammonia toxicity to fish has a tight relationship with oxidative stress, inflammation and ferroptosis (a type of programmed cell death characterized by iron-dependent lipid peroxidation), but the temporal response of the above three in brain remains unclear. In the present study, yellow catfish were exposed to three concentrations of ammonia: low concentration (TA-N ˂ 0.01 mg L-1, LA), middle concentration (TA-N 5.70 mg L-1, MA), high concentration (TA-N 28.50 mg L-1, HA) for 96 h. Brain was selected as target tissues for analysis. Results showed that ammonia stress resulted in firstly increased contents of hydroxyl radical at 1 h, total iron at 12 h, malondialdehyde at 48 h, respectively, and decreased contents of GSH at 3 h. The initial high expression levels of ferroptosis (GPX4, system xc-, TFR1) and inflammatory-related factors (NF-ƙB p65, TNF, COX-2, and LOX-15B), antioxidant enzymes genes (SOD and CAT) were observed at first hour upon MA or HA stress. Combining all, it suggested that brain ferroptosis and inflammation were the first to be activated at the initial stage of ammonia stress, and then that provoked oxidative stress.


Asunto(s)
Bagres , Ferroptosis , Animales , Amoníaco/toxicidad , Amoníaco/metabolismo , Bagres/metabolismo , Estrés Oxidativo , Inflamación/inducido químicamente , Encéfalo
11.
J Am Chem Soc ; 145(25): 13730-13741, 2023 Jun 28.
Artículo en Inglés | MEDLINE | ID: mdl-37338458

RESUMEN

The removal of organophosphorus (OP) herbicides from water has been studied using adsorptive removal, chemical oxidation, electrooxidation, enzymatic degradation, and photodegradation. The OP herbicide glyphosate (GP) is one of the most used herbicides worldwide, leading to excess GP in wastewater and soil. GP is commonly broken down in environmental conditions to compounds such as aminomethylphosphonic acid (AMPA) or sarcosine, with AMPA having a longer half-life and similar toxicity to GP. Metal-organic frameworks (MOFs) are excellent materials for purifying OP herbicides from water due to their ability to combine adsorption and photoactivity within one material. Herein, we report the use of a robust Zr-based MOF with a meta-carborane carboxylate ligand (mCB-MOF-2) to examine the adsorption and photodegradation of GP. The maximum adsorption capacity of mCB-MOF-2 for GP was determined to be 11.4 mmol/g. Non-covalent intermolecular forces between the carborane-based ligand and GP within the micropores of mCB-MOF-2 are thought to be responsible for strong binding affinity and capture of GP. After 24 h of irradiation with ultraviolet-visible (UV-vis) light, mCB-MOF-2 selectively converts 69% of GP to sarcosine and orthophosphate, following the C-P lyase enzymatic pathway and biomimetically photodegrading GP. Circumventing the production of AMPA is desirable, as it has a longer half-life and similar toxicity to GP. The exceptional adsorption capacity of GP by mCB-MOF-2 and its biomimetic photodegradation to non-toxic sarcosine make it a promising material for removing OP herbicides from water.

12.
Chemosphere ; 324: 138351, 2023 May.
Artículo en Inglés | MEDLINE | ID: mdl-36898446

RESUMEN

NANO: and microplastics (NPs/MPs) are a new type of persistent environmental pollutant. Microbial flocs are a type of microbial aggregate commonly used in aquaculture. To investigate the impact of NPs/MPs on microbial flocs with different particle sizes: NPs/MPs-80 nm (M 0.08), NPs/MPs-800 nm (M 0.8), and NPs/MPs-8 µm (M 8), NPs/MPs exposure tests (28 days) and ammonia nitrogen conversion tests (24 h) were conducted. The results showed that the particle size was significantly higher in the M 0.08 group when compared with the control group (C group). The TAN (total ammonia nitrogen) content of each group maintained the order of M 0.08 > M 0.8 > M 8 > C from days 12-20. The nitrite content in the M 0.08 group was significantly higher on day 28 than that in the other groups. In the ammonia nitrogen conversion test, the nitrite content of the C group was significantly lower than that of the NPs/MPs exposure groups. The results suggested that NPs contributed to microbial aggregation and affected microbial colonization. In addition, NPs/MPs exposure could reduce microbial nitrogen cycling capacity, with a size-dependent toxicity difference of NPs > MPs. The findings of this study are expected to fill the research gap on the mechanisms of NPs/MPs' impact on microorganisms and the nitrogen cycle in aquatic ecosystems.


Asunto(s)
Microplásticos , Contaminantes Químicos del Agua , Amoníaco , Ecosistema , Nitritos , Plásticos/toxicidad , Ciclo del Nitrógeno , Contaminantes Químicos del Agua/toxicidad
13.
Ecotoxicol Environ Saf ; 252: 114625, 2023 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-36774801

RESUMEN

Endocrine-disrupting chemicals (EDCs) have been reported to affect populations by disrupting the human endocrine system. Di-(2-ethylhexyl) phthalate (DEHP) is an EDC that is present in various consumer products. Exposure to DEHP could contribute to reproductive system dysfunction, with subsequent adverse female reproductive outcomes. Granulosa cells (GCs) play essential roles in ovarian function and fertility. To further reveal the underlying mechanism by which DEHP impairs female fertility and affects the normal function of GCs, in vivo and in vitro experiments were performed. Transcript sequencing was used to identify genes that were differentially expressed in GCs after DEHP treatment. SLC39A5 was shown to be overexpressed in the DEHP group compared to the normal control group. DEHP treatment and overexpression of SLC39A5 activated NF-κB-related factors, followed by an increase in the transcript expression level of NLRP3. NLRP3 inflammasomes play crucial roles in pyroptosis by acting as sensors. Pyroptosis is a type of inflammation-related cell death associated with various diseases, including ovarian cancer and polycystic ovary syndrome. Activation of NF-κB contributed to the upregulation of pyroptosis in GCs, while pyroptosis factors were downregulated after the inhibition of NF-κB with JSH-23. The same phenomenon was also observed in a mouse model in which DEHP-treated mice had higher expression levels of NF-κB and pyroptosis markers in GCs. Moreover, this phenomenon could be partially reversed by the NF-κB inhibitor JSH-23. DEHP treatment also disrupted the normal expression of ovarian function-related genes and inhibited the proliferation of GCs. Reproductive system impairment was observed in mice exposed to DEHP. DEHP-treated mice had a lower body weight, smaller reproductive organs, fewer healthy follicles, and diminished ovarian reserve. Thus, DEHP contributes to ovarian dysfunction by inducing pyroptosis via the SLC39A5/NF-κB/NLRP3 axis in GCs.


Asunto(s)
Proteínas de Transporte de Catión , Dietilhexil Ftalato , Ratones , Femenino , Humanos , Animales , FN-kappa B/genética , FN-kappa B/metabolismo , Piroptosis , Dietilhexil Ftalato/toxicidad , Proteína con Dominio Pirina 3 de la Familia NLR/genética , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo , Células de la Granulosa/metabolismo
14.
Materials (Basel) ; 16(4)2023 Feb 16.
Artículo en Inglés | MEDLINE | ID: mdl-36837293

RESUMEN

Seepage is a main cause of dam failure, and its stability analysis is the focus of a dam's design, construction, and management. Because a geological survey can only determine the range of a dam foundation's hydraulic conductivity, hydraulic conductivity inversion is crucial in engineering. However, current inversion methods of dam hydraulic conductivity are either not accurate enough or too complex to be directly used in engineering. Therefore, this paper proposes a new method for the inversion of hydraulic conductivity with high application value in hydraulic engineering using an improved genetic algorithm coupled with an unsaturated equivalent continuum model (IGA-UECM). This method is implemented by a new code that fully considers engineering applicability. In addition to overcoming the premature convergence shortcomings of traditional genetic algorithms, it converges faster than Bayesian optimization and tree-structured Parzen estimator inversion algorithms. This method is verified by comparing the water head from drilling exploration and inversion. The results of the inversion are used to study the influence of a cement grouting curtain layout scheme on the seepage field of the Hami concrete-face rockfill dam in China, which is used as an engineering application case of the IGA-UECM. The law of the seepage field is reasonable, which verifies the validity of the IGA-UECM. The new inversion method of hydraulic conductivity and the proposed cement grouting curtain layout in this study offer possible strategies for the design, construction, and management of concrete-face rockfill dams.

15.
Animals (Basel) ; 13(3)2023 Jan 24.
Artículo en Inglés | MEDLINE | ID: mdl-36766286

RESUMEN

Ammonia is a common environmental limiting factor in aquaculture. To investigate the effects of ammonia stress and explore the protective effect of N-carbamylglutamate (NCG) on Micropterus salmoides (M. salmoides), tissue sections and parameters related to oxidative stress and the inflammatory response in M. salmoides were carried out during the ammonia stress test and feeding test. The results demonstrated that the LC50 for 24 h, 48 h, 72 h, and 96 h under ammonia stress in M. salmoides were 25.78 mg/L, 24.40 mg/L, 21.90 mg/L, and 19.61 mg/L, respectively. Under ammonia stress, the structures of the tissues were damaged, and the GSH content decreased, while the MDA content increased with the increase in stress time and ammonia concentration. The NO content fluctuated significantly after the ammonia nitrogen stress. In the 15-day feeding test, with the increased NCG addition amount and feeding time, the GSH content increased while the MDA and NO contents decreased gradually in the NCG addition groups (NL group: 150 mg/kg; NM group: 450 mg/kg; NH group: 750 mg/kg) when compared with their control group (CK group: 0 mg/kg). In the ammonia toxicology test after feeding, the damage to each tissue was alleviated in the NL, NM, and NH groups, and the contents of GSH, MDA, and NO in most tissues of the NH group were significantly different from those in the CK group. The results suggested that ammonia stress caused tissue damage in M. salmoides, provoking oxidative stress and inflammatory response. The addition of NCG to the feed enhances the anti-ammonia ability of M. salmoides. Moreover, the gill and liver might be the target organs of ammonia toxicity, and the brain and kidney might be the primary sites where NCG exerts its effects. Our findings could help us to find feasible ways to solve the existing problem of environmental stress in M. salmoides culture.

16.
ACS Appl Mater Interfaces ; 15(4): 5309-5316, 2023 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-36691894

RESUMEN

We report that the carborane-based metal-organic framework (MOF) mCB-MOF-1 can achieve high adsorptive selectivity for CO2:N2 mixtures. This hydrophobic MOF presenting open metal sites shows high CO2 adsorption capacity and remarkable selectivity values that are maintained even under extremely humid conditions. The comparison of mCB-MOF-1' with MOF-74(Ni) demonstrates the superior performance of the former under challenging moisture operation conditions.

17.
Arch Oral Biol ; 144: 105573, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36341994

RESUMEN

OBJECTIVE: This study aimed to investigate the effect of infliximab on orthodontic tooth movement in rats. MATERIALS AND METHODS: Sixty male Sprague-Dawley rats were randomly divided into two groups: saline group and infliximab group. The two groups of rats received weekly intraperitoneally injection of saline or infliximab (5 mg/kg), respectively. After four weeks of injection, five rats in each group were euthanized and orthodontic appliances were placed in the other twenty-five rats each. On days 1, 3, 7, 14 and 21, five rats from each group were euthanised. Maxillae of all the rats were collected and examined by micro-computed tomography, haematoxylin and eosin staining, tartrate-resistant acid phosphatase staining, and immunohistochemical staining of tumour necrosis factor (TNF)-α, receptor activator of nuclear factor κB ligand (RANKL), receptor activator of nuclear factor κB (RANK), and osteoprotegerin (OPG). All data were analysed with Mann-Whitney test. RESULTS: Infliximab inhibited orthodontic tooth movement and decreased osteoclastogenesis on the compression side during orthodontic tooth movement. The elevated TNF-α level, induced by orthodontic force, was decreased by infliximab. Furthermore, infliximab reduced the expression of RANKL and RANK, while increased the expression of OPG on the compression side. CONCLUSION: Infliximab inhibits orthodontic tooth movement by reducing levels of TNF-α, RANKL, and RANK, while increasing level of OPG, and decreasing osteoclastogenesis on the compression side of periodontium.


Asunto(s)
Técnicas de Movimiento Dental , Factor de Necrosis Tumoral alfa , Ratas , Masculino , Animales , Técnicas de Movimiento Dental/métodos , Infliximab/farmacología , Factor de Necrosis Tumoral alfa/farmacología , Microtomografía por Rayos X , Osteoclastos , Ratas Sprague-Dawley , Ligando RANK/metabolismo , Osteoprotegerina/metabolismo , Receptor Activador del Factor Nuclear kappa-B
18.
World J Clin Cases ; 10(27): 9834-9844, 2022 Sep 26.
Artículo en Inglés | MEDLINE | ID: mdl-36186170

RESUMEN

BACKGROUND: Paragangliomas and extra-adrenal pheochromocytomas are uncommon neuroendocrine tumors with ubiquitous distribution. Malignant paraganglioma is a relatively rare entity. We report the treatment and pathological characteristics of a patient with malignant paraganglioma, and summarize the latest advances in the treatment of malignant paraganglioma based on a literature review. CASE SUMMARY: A 45-year-old Chinese woman presented to the hospital due to pain in the waist (right side) and right buttock, and was diagnosed as malignant paraganglioma after the placement of ureteral stent, implantation of ileus catheter, and transvaginal removal of the vaginal mass. After relief of intestinal obstruction, the patient received intravenous chemotherapy and peritoneal perfusion chemotherapy. Although her pelvic mass disease was stable, she developed multiple liver metastases and bone metastases. Due to the development of spinal cord compression, she underwent orthopedic surgery, followed by radiotherapy, and molecular targeted therapy with apatinib, but with poor disease control. CONCLUSION: Clinical management of paraganglioma is challenging for endocrinologists and oncologists. Prospective studies are required to develop standardized therapeutic strategies for malignant paragangliomas.

19.
Materials (Basel) ; 15(20)2022 Oct 14.
Artículo en Inglés | MEDLINE | ID: mdl-36295221

RESUMEN

To better understand the seepage field in tailings dam with a drainage structure that combines drainage mat, drainage tube, and geotextile, an equivalent seepage analysis method for the drainage structure is presented. In the method, an equivalent drainage structure is suggested to replace the original drainage. It has enough size to be easily presented in the three-dimensional (3d) model of a tailings dam. According to a back analysis procedure using the quasi-3d models of a tailings dam with original and equivalent drainage structures, the material properties of the equivalent drainage structure can be obtained under the principle of drainage capacity equivalence. It is demonstrated that the suggested method is accurate enough to capture the seepage field in a tailings dam based on comparing the calculated and measured phreatic lines in a tailings dam for verification. Then, the method is employed to investigate the seepage field in a tailings dam in China for a case study. The rise of water level, damage of drainage structure, or increase of tailings discharge speed and time will lift up phreatic line. After terminating tailings discharge, phreatic line will first rise and then fall. The effect of tailings discharge on phreatic line will almost disappear after terminating tailings discharge for 24 h.

20.
Chem Commun (Camb) ; 58(72): 10004-10007, 2022 Sep 08.
Artículo en Inglés | MEDLINE | ID: mdl-35942713

RESUMEN

Metal-organic framework (MOF) coatings on cells enhance viability in cytotoxic environments. Here, we show how protective multi-layered MOF bio-composite shells on a model cell system (yeast) enhance the proliferation of living cells exposed to hostile protease-rich environments via the dissolution of the shells and release of a protease inhibitor (antitrypsin).


Asunto(s)
Antineoplásicos , Estructuras Metalorgánicas , Antineoplásicos/farmacología , Supervivencia Celular , Estructuras Metalorgánicas/farmacología
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