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1.
Small ; : e2403084, 2024 Jul 03.
Artículo en Inglés | MEDLINE | ID: mdl-38958079

RESUMEN

Residual alkali is one of the biggest challenges for the commercialization of sodium-based layered transition metal oxide cathode materials since it can even inevitably appear during the production process. Herein, taking O3-type Na0.9Ni0.25Mn0.4Fe0.2Mg0.1Ti0.05O2 as an example, an active strategy is proposed to reduce residual alkali by slowing the cooling rate, which can be achieved in one-step preparation method. It is suggested that slow cooling can significantly enhance the internal uniformity of the material, facilitating the reintegration of Na+ into the bulk material during the calcination cooling phase, therefore substantially reducing residual alkali. The strategy can remarkably suppress the slurry gelation and gas evolution and enhance the structural stability. Compared to naturally cooled cathode materials, the capacity retention of the slowly cooled electrode material increases from 76.2% to 85.7% after 300 cycles at 1 C. This work offers a versatile approach to the development of advanced cathode materials toward practical applications.

2.
Exp Cell Res ; 430(2): 113702, 2023 09 15.
Artículo en Inglés | MEDLINE | ID: mdl-37414204

RESUMEN

BACKGROUND: Obesity is a serious public health issue worldwide, which is a risk factor of cardiovascular disorders. Obesity has been shown to be associated with subclinical myocardial injury, increasing the risk of heart failure. Our study aims to explore novel mechanisms underlying obesity-induced myocardial injury. METHODS: Mice were fed a high-fat diet (HFD) to establish a mouse model of obesity, and serum levels of TG, TCH, LDL, CK-MB, LDH, cTnI and BNP were examined. Inflammatory response was evaluated by determining the expression and secretion of proinflammatory cytokines IL-1ß and TNF-α. Macrophage infiltration in the heart was examined by IHC staining, and H&E staining was applied to evaluate myocardial injury. Primary peritoneal macrophages were isolated from mice and treated with palmitic acid (PA). Macrophage polarization was evaluated by determine the expression of CCL2, iNOS, CD206 and arginase I via Western blot, RT-qPCR, and flow cytometry. Co-IP assays were performed to examine the interaction between LEAP-2, GHSR and ghrelin. RESULTS: Hyperlipidemia, increased proinflammatory cytokines and myocardial injury were observed in mice with obesity, and silencing of LEAP-2 ameliorated HFD-induced hyperlipidemia, inflammation, and myocardial injury. Moreover, HFD-induced macrophage infiltration and M1 polarization were reversed by LEAP-2 knockdown in mice. Furthermore, silencing of LEAP-2 suppressed PA-induced M1 polarization but enhanced M2 polarization in vitro. LEAP-2 interacted with GHSR in macrophages, and knockdown of LEAP-2 promoted the interaction of GHSR and ghrelin. Overexpression of ghrelin enhanced LEAP-1 silencing-mediated suppression of inflammatory response and upregulation of M2 polarization in PA-induced macrophages. CONCLUSION: Knockdown of LEAP-2 ameliorates obesity-induced myocardial injury via promoting M2 polarization.


Asunto(s)
Ghrelina , Macrófagos , Animales , Ratones , Citocinas/metabolismo , Ghrelina/metabolismo , Inflamación/metabolismo , Macrófagos/metabolismo , Obesidad/complicaciones , Obesidad/genética
3.
Ecotoxicol Environ Saf ; 279: 116501, 2024 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-38805831

RESUMEN

6:2 Chlorinated polyfluoroalkyl ether sulfonate (F-53B) is a new type of perfluorinated and polyfluoroalkyl substance (PFAS) that is used extensively in industry and manufacturing. F-53B causes damage to multiple mammalian organs. However, the impacts of F-53B on bone are unknown. Maternal exposure to F-53B is of particular concern because of the vulnerability of the developing fetus and newborn to contaminants from the mother. The goal of this study was to examine the impacts of maternal F-53B exposure on bone growth and development in offspring and to explore its underlying mechanisms. Herein, C57BL/6 J mice were given free access to deionized water containing 0, 0.57, or 5.7 mg/L F-53B during pregnancy and lactation. F-53B exposure resulted in impaired liver function, decreased IGF-1 secretion, dysregulation of bone metabolism and disruption of the dynamic balance between osteoblasts and osteoclasts in male offspring. F-53B inhibits longitudinal bone growth and development and causes osteoporosis in male offspring. F-53B may affect the growth and development of offspring bone via the IGF-1/OPG/RANKL/CTSK signaling pathway. This study provides new insights for the study of short stature and bone injury caused by F-53B.


Asunto(s)
Desarrollo Óseo , Lactancia , Exposición Materna , Ratones Endogámicos C57BL , Efectos Tardíos de la Exposición Prenatal , Animales , Femenino , Masculino , Embarazo , Ratones , Exposición Materna/efectos adversos , Desarrollo Óseo/efectos de los fármacos , Factor I del Crecimiento Similar a la Insulina/metabolismo , Fluorocarburos/toxicidad , Osteoprotegerina/metabolismo , Osteoclastos/efectos de los fármacos , Huesos/efectos de los fármacos , Osteoblastos/efectos de los fármacos , Ácidos Sulfónicos/toxicidad
4.
Int J Mol Sci ; 25(7)2024 Apr 07.
Artículo en Inglés | MEDLINE | ID: mdl-38612912

RESUMEN

Leaf rolling is regarded as an important morphological trait in wheat breeding. Moderate leaf rolling is helpful to keep leaves upright and improve the photosynthesis of plants, leading to increased yield. However, studies on the identification of genomic regions/genes associated with rolling leaf have been reported less frequently in wheat. In this study, a rolling leaf mutant, T73, which has paired spikelets, dwarfism, and delayed heading traits, was obtained from a common wheat landrace through ethyl methanesulfonate mutagenesis. The rlT73 mutation caused an increase in the number of epidermal cells on the abaxial side and the shrinkage of bulliform cells on the adaxial side, leading to an adaxially rolling leaf phenotype. Genetic analysis showed that the rolling leaf phenotype was controlled by a single recessive gene. Further Wheat55K single nucleotide polymorphism array-based bulked segregant analysis and molecular marker mapping delimited rlT73 to a physical interval of 300.29-318.33 Mb on the chromosome arm 1BL in the Chinese Spring genome. We show that a point mutation at the miRNA165/166 binding site of the HD zipper class III transcription factor on 1BL altered its transcriptional level, which may be responsible for the rolling leaf phenotype. Our results suggest the important role of rlT73 in regulating wheat leaf development and the potential of miRNA-based gene regulation for crop trait improvement.


Asunto(s)
Fitomejoramiento , Triticum , Alelos , Triticum/genética , Mutación , Cromosomas
5.
Theor Appl Genet ; 137(1): 5, 2023 Dec 13.
Artículo en Inglés | MEDLINE | ID: mdl-38091074

RESUMEN

KEY MESSAGE: A novel major adult-plant stripe rust resistance QTL derived from cultivated emmer wheat was mapped to a 123.6-kb region on wheat chromosome 2BL. Stripe rust, caused by the fungal pathogen Puccinia striiformis f. sp. tritici (Pst), is one of the most devastating diseases of wheat. Identification of new sources of resistance and their utilization in breeding programs is the effectively control strategy. The objective of this study was to identify and genetically characterize the stripe rust resistance derived from the cultivated emmer accession AS286. A recombinant inbred line population, developed from a cross between the susceptible durum wheat line langdon and AS286, was genotyped using the Wheat55K single nucleotide polymorphism array and evaluated in field conditions with a mixture of the prevalent Chinese Pst races (CYR32, CYR33, CYR34, Zhong4, and HY46) and in growth chamber with race CYR34. Three QTLs conferring resistance were mapped on chromosomes 1BS, 2BL, and 5BL, respectively. The QYrAS286-1BS and QYrAS286-2BL were stable with major effects, explaining 12.91% to 18.82% and 11.31% to 31.43% of phenotypic variation, respectively. QYrAS286-5BL was only detected based on growth chamber seedling data. RILs harboring both QYrAS286-1BS and QYrAS286-2BL showed high levels of stripe rust resistance equal to the parent AS286. The QYrAS286-2BL was only detected at the adult-plant stage, which is different from previously named Yr genes and inherited as a single gene. It was further mapped to a 123.6-kb region using KASP markers derived from SNPs identified by bulked segregant RNA sequencing (BSR-Seq). The identified loci enrich our stripe rust resistance gene pool, and the flanking markers developed here could be useful in marker-assisted selection for incorporating QYrAS286-2BL into wheat cultivars.


Asunto(s)
Basidiomycota , Triticum , Mapeo Cromosómico , Triticum/genética , Triticum/microbiología , Fitomejoramiento , Sitios de Carácter Cuantitativo , Genotipo , Resistencia a la Enfermedad/genética , Enfermedades de las Plantas/genética , Enfermedades de las Plantas/microbiología
6.
Environ Res ; 223: 115475, 2023 04 15.
Artículo en Inglés | MEDLINE | ID: mdl-36773635

RESUMEN

Anaerobic baffled reactor (ABR) is widely used in rural sewage treatment due to its unique structure, strong impact load resistance, and low energy consumption. However, there is a lack of research on pollutant degradation patterns and microbial community succession patterns in each compartment of ABR. In this study, a packed anaerobic baffled reactor (PABR) was constructed. The effects of T and HRT on the pollutant removal performance of PABR were investigated, and the pollutant degradation and microbial community succession in different compartments of PABR were studied. The results show that the removal rates of COD, NH4+-N, and TN of PABR can reach 85.54 ± 1.08%, 16.94 ± 1.01%, and 5.64 ± 1.18% respectively, and PABR has a good pollutant removal effect. With the extension of HRT, the COD removal rate of PABR increases steadily, and the NH4+-N and TN removal rate of PABR increases to a certain extent. The recommended HRT is 72 h. T has a significant impact on the COD removal effect of PABR. The increase of T in a certain range is conducive to the removal of pollutants by PABR. The COD removal rate of PABR decreases gradually along the flow direction, and the removal of organic matter is mainly concentrated in the first compartment. PABR has good removal capacity for CODss and better nitrogen removal capacity compared with traditional ABR. The richness and diversity of the microbial community in PABR increased gradually along the flow direction. The bacterial species in each compartment were similar but the proportion was different, showing the characteristics of multi-stage and separated phase operation. This study provides a new reference for the application of ABR in rural sewage treatment.


Asunto(s)
Contaminantes Ambientales , Aguas Residuales , Anaerobiosis , Aguas del Alcantarillado , Reactores Biológicos/microbiología , Eliminación de Residuos Líquidos/métodos
7.
Bioorg Med Chem ; 56: 116599, 2022 02 15.
Artículo en Inglés | MEDLINE | ID: mdl-35041998

RESUMEN

The aminobenzamide is selective to class I histone deacetylases (HDACs) and displays unique tight-binding/slow-off HDAC-binding mechanism. Herein, we report a series of 9-substituted purine aminobenzamides that selectively inhibit class I HDACs. The activities in vitro showed compound 9d exhibited 12 folds more potent than MS-275 against HDAC1 isoform and showed excellent inhibitory activity on cancer cells, including HCT-116, MDA-MB-231, K562 cell lines. The metabolic stability of 9d was much better than that of the well-known HDAC inhibitor SAHA. Pulse exposure test of western blot assay demonstrated that 9a, 9d induced histone acetylation in a similar manner to MS-275. Further biological validation demonstrated that 9d prevented cell transition from G1 phase to S phase by reducing Cyclin D1, CDK2 and lifting p21, induced early apoptosis by upregulating BAX and downregulating Bcl-2 in HCT-116 cells.


Asunto(s)
Antineoplásicos/farmacología , Benzamidas/farmacología , Inhibidores de Histona Desacetilasas/farmacología , Histona Desacetilasas/metabolismo , Purinas/farmacología , Antineoplásicos/síntesis química , Antineoplásicos/química , Benzamidas/síntesis química , Benzamidas/química , Línea Celular Tumoral , Proliferación Celular/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Relación Dosis-Respuesta a Droga , Ensayos de Selección de Medicamentos Antitumorales , Inhibidores de Histona Desacetilasas/síntesis química , Inhibidores de Histona Desacetilasas/química , Humanos , Simulación del Acoplamiento Molecular , Estructura Molecular , Purinas/química , Relación Estructura-Actividad
8.
Plant Dis ; 106(4): 1278-1285, 2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-34818916

RESUMEN

Stripe rust, caused by Puccinia striiformis f. sp. tritici, is a damaging disease of wheat globally, and breeding resistant cultivars is the best control strategy. The Chinese winter wheat cultivar Shumai126 (SM126) exhibited strong resistance to P. striiformis f. sp. tritici in the field for more than 10 years. The objective of this study was to identify and map quantitative trait loci (QTL) for resistance to stripe rust in a population of 154 recombinant inbred lines (RILs) derived from a cross between cultivars Taichang29 (TC29) and SM126. The RILs were tested in six field environments with a mixture of the Chinese prevalent races (CYR32, CYR33, CYR34, Zhong4, and HY46) of P. striiformis f. sp. tritici and in growth chamber with race CYR34 and genotyped using the Wheat55K single nucleotide polymorphism (SNP) array. Six QTL were mapped on chromosomes 1BL, 2AS, 2AL, 6AS, 6BS, and 7BL, respectively. All QTL were contributed by SM126 except QYr.sicau-2AL. The QYr.sicau-1BL and QYr.sicau-2AS had major effects, explaining 27.00 to 39.91% and 11.89 to 17.11% of phenotypic variances, which may correspond to known resistance genes Yr29 and Yr69, respectively. The QYr.sicau-2AL, QYr.sicau-6AS, and QYr.sicau-6BS with minor effects are likely novel. QYr.sicau-7BL was only detected based on growth chamber seedling data. Additive effects were detected for the combination of QYr.sicau-1BL, QYr.sicau-2AS, and QYr.sicau-2AL. SNP markers linked to QYr.sicau-1BL (AX-111056129 and AX-108839316) and QYr.sicau-2AS (AX-111557864 and AX-110433540) were converted to breeder-friendly Kompetitive allele-specific PCR (KASP) markers that would facilitate the deployment of stripe rust resistance genes in wheat breeding.


Asunto(s)
Basidiomycota , Sitios de Carácter Cuantitativo , Basidiomycota/genética , China , Mapeo Cromosómico , Resistencia a la Enfermedad/genética , Fitomejoramiento , Enfermedades de las Plantas/genética , Sitios de Carácter Cuantitativo/genética , Triticum/genética
9.
J Exp Bot ; 71(9): 2561-2572, 2020 05 09.
Artículo en Inglés | MEDLINE | ID: mdl-31942623

RESUMEN

The wild emmer wheat (Triticum turgidum ssp. dicoccoides; WEW) yellow (stripe) rust resistance genes Yr15, YrG303, and YrH52 were discovered in natural populations from different geographic locations. They all localize to chromosome 1B but were thought to be non-allelic based on differences in resistance response. We recently cloned Yr15 as a Wheat Tandem Kinase 1 (WTK1) and show here that these three resistance loci co-segregate in fine-mapping populations and share an identical full-length genomic sequence of functional Wtk1. Independent ethyl methanesulfonate (EMS)-mutagenized susceptible yrG303 and yrH52 lines carried single nucleotide mutations in Wtk1 that disrupted function. A comparison of the mutations for yr15, yrG303, and yrH52 mutants showed that while key conserved residues were intact, other conserved regions in critical kinase subdomains were frequently affected. Thus, we concluded that Yr15-, YrG303-, and YrH52-mediated resistances to yellow rust are encoded by a single locus, Wtk1. Introgression of Wtk1 into multiple genetic backgrounds resulted in variable phenotypic responses, confirming that Wtk1-mediated resistance is part of a complex immune response network. WEW natural populations subjected to natural selection and adaptation have potential to serve as a good source for evolutionary studies of different traits and multifaceted gene networks.


Asunto(s)
Basidiomycota/patogenicidad , Resistencia a la Enfermedad , Enfermedades de las Plantas , Poaceae/genética , Mapeo Cromosómico , Resistencia a la Enfermedad/genética , Genes de Plantas , Marcadores Genéticos , Enfermedades de las Plantas/genética , Enfermedades de las Plantas/microbiología , Poaceae/microbiología
10.
Chemistry ; 25(71): 16377-16381, 2019 Dec 18.
Artículo en Inglés | MEDLINE | ID: mdl-31631457

RESUMEN

Fabricating three-dimensional (3D) hierarchical noble-metal particles by spontaneous redox reactions between graphene and noble-metal salts still remains a great challenge. Herein, the fact that graphene oxide (GO) itself acts as both a platform for grafting polymer brushes and a reducing agent to reduce [Ag(NH3 )2 ]+ ions is taken advantages of. 3D flower-like Ag mesoparticles (Ag mesoflowers, Ag MFs) with tunable size and shapes can spontaneous grow on poly(4-vinylpyridine) brushes-grafted-graphene oxide (P4VP-g-GO) films in Ag(NH3 )2 OH solution without the use of any additional reducing agent. The residual Ag(NH3 )2 OH on 3D Ag MFs surface can be further reduced by NaBH4 , causing abundant nanoporosities over the entire Ag MFs. The resulting Ag nanoporous MFs (Ag NMFs) with larger surface-to-volume ratio and higher nanoscale roughness exhibit ultrasensitivity in surface-enhanced Raman spectroscopy (SERS) detection, and the detection limit for 4-aminothiophenol is as low as 10-13 m.

11.
Chem Pharm Bull (Tokyo) ; 66(12): 1199-1202, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30504634

RESUMEN

Four new prenylated 2-arylbenzofurans, namely artopithecins A-D (1-4), together with five known compounds (5-9) were isolated from the twigs of Artocarpus pithecogallus for the first time. Their structures were elucidated based on extensive spectroscopic analysis and in comparison with literature data. All isolates were evaluated for their inhibitory activities against mushroom tyrosinase. Compounds 3 and 4 displayed significant tyrosinase inhibitory activities with IC50 values of 37.09±0.33 and 38.14±0.21 µM, respectively.


Asunto(s)
Artocarpus/química , Benzofuranos/farmacología , Inhibidores Enzimáticos/farmacología , Monofenol Monooxigenasa/antagonistas & inhibidores , Tallos de la Planta/química , Agaricales/enzimología , Benzofuranos/química , Benzofuranos/aislamiento & purificación , Relación Dosis-Respuesta a Droga , Inhibidores Enzimáticos/química , Inhibidores Enzimáticos/aislamiento & purificación , Estructura Molecular , Monofenol Monooxigenasa/metabolismo , Prenilación , Relación Estructura-Actividad
12.
Chem Pharm Bull (Tokyo) ; 66(4): 434-438, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29607909

RESUMEN

Two new prenylated flavones, artocarnin A (2) and carpachromenol (12), together with 13 known prenylflavonoids (1, 3-11, 13-15) were isolated from the twigs of Artocarpus nigrifolius for the first time. Their structures were elucidated by high resolution-electrospray ionization (HR-ESI)-MS, NMR spectroscopic analysis, and in comparison with the reported data. Compounds 1-15 were evaluated for their antiproliferative effects against SiHa and SGC-7901 human cancer cell lines in vitro. The most active compound, eleocharin A (10), showed significant cytotoxicity on SiHa cells (IC50=0.7±0.1 µM) and inhibitory activity against SGC-7901 cells (IC50=8.3±0.2 µM) and could be considered as potential lead compound for further development of novel anti-tumor agents.


Asunto(s)
Antineoplásicos Fitogénicos/farmacología , Artocarpus/química , Flavonoides/farmacología , Corteza de la Planta/química , Antineoplásicos Fitogénicos/química , Antineoplásicos Fitogénicos/aislamiento & purificación , Proliferación Celular/efectos de los fármacos , Relación Dosis-Respuesta a Droga , Ensayos de Selección de Medicamentos Antitumorales , Flavonoides/química , Flavonoides/aislamiento & purificación , Humanos , Estructura Molecular , Relación Estructura-Actividad , Células Tumorales Cultivadas
13.
Theor Appl Genet ; 129(5): 921-34, 2016 May.
Artículo en Inglés | MEDLINE | ID: mdl-26847646

RESUMEN

KEY MESSAGE: The wheat stripe rust resistance gene Yr36 ( WKS1 ) with a unique kinase-START domain architecture is highly conserved in wild emmer wheat natural populations. Wild emmer wheat (Triticum dicoccoides) populations have developed various resistance strategies against the stripe rust pathogen Puccinia striiformis f. sp. tritici (Pst). The wild emmer gene, Yr36 (WKS1), which confers partial resistance to a broad spectrum of Pst races, is composed of a kinase and a START lipid-binding domain, a unique gene architecture found only in the Triticeae tribe. The analysis of 435 wild emmer accessions from a broad range of natural habitats revealed that WKS1 and its paralogue WKS2 are present only in the southern distribution range of wild emmer in the Fertile Crescent, supporting the idea that wheat domestication occurred in the northern populations. An analysis of full-length WKS1 sequence from 54 accessions identified 15 different haplotypes and very low-nucleotide diversity (π = 0.00019). The high level of WKS1 sequence conservation among wild emmer populations is in contrast to the high level of diversity previously observed in NB-LRR genes (e.g., Lr10 and Pm3). This phenomenon may reflect the different resistance mechanisms and different evolutionary pathways that shaped these genes, and may shed light on the evolution of genes that confer partial resistance to stripe rust. Only five WKS1 coding sequence haplotypes were revealed among all tested accessions, encoding four different putative WKS1 proteins (designated P0, P1, P2, and P3). Infection tests showed that P0, P1, and P3 haplotypes display a resistance response, while P2 displayed a susceptible response. These results show that the WKS1 proteins (P0, P1, and P3) can be useful to improve wheat resistance to stripe rust.


Asunto(s)
Resistencia a la Enfermedad/genética , Genes de Plantas , Genética de Población , Enfermedades de las Plantas/genética , Triticum/genética , Basidiomycota , Clima , Secuencia Conservada , ADN de Plantas/genética , Evolución Molecular , Frecuencia de los Genes , Haplotipos , Medio Oriente , Enfermedades de las Plantas/microbiología , Análisis de Secuencia de ADN , Triticum/clasificación
14.
Physiol Plant ; 153(1): 105-18, 2015 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-24813713

RESUMEN

There is increasing evidence confirming that dioecious plants have evolved a series of sex-related physiological mechanisms allowing acclimation to environmental stresses, but few studies have attempted to thoroughly uncover the potential molecular regulation underlying these responses. Recently, we found in the dioecious plant, Populus cathayana, that males possess a greater tolerance to enhanced UV-B radiation than do females. To continue this work further, comparative transcriptome analyses were carried out. A total of 362 and 296 differentially expressed genes (DEGs) were detected in males and females, respectively. Similarly, as shown in previous studies, these DEGs were involved in a set of conserved functions and pathways related to UV-B stress, regardless of the sex. On the other hand, sex-related responses via transcriptome remodeling were detected, as changes in sex-related gene expression occurred in some pathways. For example, many DEGs involved in amino acid metabolism were mainly upregulated in males but downregulated in females. In some pathways, DEGs were expressed predominantly or exclusively in one sex. This may directly contribute to sex-related physiological responses. Taken together, our results not only provide strong evidence that males and females have adopted sex-related molecular strategies in response to solar UV-B radiation but also suggest many new insights, in particular into molecular regulation, via sex-biased gene expression. We conclude that these results can further enhance the sustainable exploitation and management of P. cathayana plants.


Asunto(s)
Adaptación Fisiológica , Regulación de la Expresión Génica de las Plantas , Genoma de Planta/genética , Populus/genética , Transcriptoma , Secuencia de Bases , Perfilación de la Expresión Génica , Biblioteca de Genes , Datos de Secuencia Molecular , Fotosíntesis , Populus/fisiología , Populus/efectos de la radiación , Análisis de Secuencia de ADN , Rayos Ultravioleta
15.
Pediatr Hematol Oncol ; 32(1): 18-25, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24852330

RESUMEN

PURPOSE: This study was to determine the efficacy of vincristine and irinotecan in children with relapsed hepatoblastoma (HB). METHODS: A total of 10 patients with relapsed HB were enrolled. Three patients were excluded. Patients received irinotecan 50 mg/m(2)/day, day 1-5 and vincristine 1.5 mg/m(2)/day, day 1, repeated every 3 weeks. The maximum cycles were eight. Reevaluation of tumor was performed every two cycles. The primary outcome was the rate of complete resection. Secondary outcomes were event-free survival (EFS) and overall survival (OS). RESULTS: Of the seven patients assessable for response, one patient with normal AFP level showed a progressive disease and withdrew. He finally died 6 months later. Four had PR, all of them underwent a second surgery and achieved complete resection. Two patients had SD, one patient relapsed 6 months after orthotopic liver transplantation and died, the other one undergoing surgery had micro margin positive, he relapsed again but alive. The rate of complete resection was 71.4% (including orthotopic liver transplantation). The 2-year EFS and OS for the whole group were 57.1% (95% CI, 12.7% to 34.2%) and 71.4% (95% CI, 16.39% to 37.4%), respectively. CONCLUSIONS: The combination of irinotecan and vincristine has a significant antitumor activity and acceptable toxicity in children with relapsed HB.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Hepatoblastoma , Neoplasias Hepáticas , Recurrencia Local de Neoplasia , Camptotecina/administración & dosificación , Camptotecina/análogos & derivados , Preescolar , Supervivencia sin Enfermedad , Hepatoblastoma/mortalidad , Hepatoblastoma/terapia , Humanos , Lactante , Irinotecán , Neoplasias Hepáticas/mortalidad , Neoplasias Hepáticas/terapia , Trasplante de Hígado , Recurrencia Local de Neoplasia/mortalidad , Recurrencia Local de Neoplasia/terapia , Tasa de Supervivencia , Factores de Tiempo , Vincristina/administración & dosificación
16.
Zhong Yao Cai ; 38(3): 601-5, 2015 Mar.
Artículo en Zh | MEDLINE | ID: mdl-26495663

RESUMEN

OBJECTIVE: To establish analysis methods for fingerprint of Kanggongyan series by HPLC. METHODS: A Shiseido CAP-CELL PAK C18(250 mm x 4. 6 mm, 3 µm) column was used with acetonitrile-0. 5% phosphoric acid as the mobile phase by gradient elution. The flow rate was 0. 8 mL/min, the column temperature was 30 °C, and the detection wavelength was set at 280 nm during 0 ~ 44 min and at 332 nm during 44 ~ 115 min. RESULTS: Ten common peaks were selected as characteristic peaks in the chromatogram of Kanggongyan particles, eleven common peaks were selected as characteristic peaks in the chromatogram of Kanggongyan tablets and capsules ,the similarities were greater than 0. 9 among all batches. CONCLUSION: The method is simple, steady and repeatable. It provides a basis for the quality control of Kanggongyan series.


Asunto(s)
Cromatografía Líquida de Alta Presión , Medicamentos Herbarios Chinos/química , Cápsulas , Control de Calidad , Comprimidos
17.
J Pediatr Hematol Oncol ; 36(4): 271-5, 2014 May.
Artículo en Inglés | MEDLINE | ID: mdl-24309602

RESUMEN

PURPOSE: The use of neoadjuvant chemotherapy has improved the survival of patients with hepatoblastoma (HB). However, an increased number of treatment complications and toxic deaths, particularly from heart failure, have been observed with doxorubicin treatment. We have applied cisplatin as a single agent to treat children with high-risk HB to improve event-free survival (EFS). METHODS: Between 2007 and 2009, 14 patients with untreated high-risk HB were enrolled in this study. All the patients received a single-agent treatment of cisplatin. The initial cisplatin cycle was administered in a continuous intravenous 24-hour infusion of 80 mg/m/24 h. The primary outcome was the rate of complete resection. Secondary outcomes were EFS and overall survival (OS). RESULTS: Eleven patients (78.6%) had an overall partial response. Two patients (14.3%) had stable disease. One patient experienced (7.1%) progression. Of the 4 patients who presented with lung metastases initially, 1 patient achieved complete response, 2 patients achieved partial response, and 1 patient experienced progression during preoperative chemotherapy. The complete resection rate was 78.6% (95% CI, 49%-95%). The Kaplan-Meier estimates of 2-year EFS and OS for the whole group were 64.3% (95% CI, 35%-87%) and 85.7% (95% CI, 57%-98%), respectively. The 2-year EFS and OS rates of patients who achieved complete resection were 81.8% (95% CI, 48%-98%) and 100% (95% CI, 62%-100%), respectively. CONCLUSIONS: The single-agent cisplatin had less toxicity than cisplatin plus doxorubicin and achieved an equal rate of complete resection in high-risk HB compared with conventional multiagent chemotherapy.


Asunto(s)
Antineoplásicos/administración & dosificación , Cisplatino/administración & dosificación , Hepatoblastoma/tratamiento farmacológico , Neoplasias Hepáticas/tratamiento farmacológico , Adolescente , Antineoplásicos/efectos adversos , Niño , Preescolar , Cisplatino/efectos adversos , Supervivencia sin Enfermedad , Femenino , Estudios de Seguimiento , Hepatoblastoma/mortalidad , Hepatoblastoma/patología , Humanos , Lactante , Neoplasias Hepáticas/mortalidad , Neoplasias Hepáticas/patología , Masculino , Estudios Retrospectivos , Tasa de Supervivencia
18.
Food Funct ; 15(14): 7518-7533, 2024 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-38920000

RESUMEN

The increasing prevalence of obesity and type 2 diabetes (T2D) signifies the failure of conventional treatments for these diseases. The gut microbiota has been proposed as a key player in the pathophysiology of diet-induced T2D. Urolithin B (Uro B), a gut microbiota-derived polyphenol metabolite, exerts several beneficial health effects. In this study, we investigated the metabolic effects of Uro B on high-fat/high-sucrose (HFHS)-fed mice and determined whether its antidiabetic effects are related to the modulation of the gut microbiota. C57BL/6J mice were fed either a chow or HFHS diet. HFHS-fed mice were administered daily with either a vehicle (water) or different doses of Uro B (100 or 200 mg kg-1) for eight weeks. The composition of the gut microbiota was assessed by 16S rRNA sequencing. The results showed that Uro B treatment reduced HFHS-induced weight gain and visceral obesity and decreased liver weight and triglyceride accumulation associated with blunted hepatic oxidative stress and inflammation. Furthermore, Uro B administration improved insulin sensitivity as revealed by improved insulin tolerance, a lower homeostasis model assessment of insulin resistance, and decreased glucose-induced hyperinsulinemia during the oral glucose tolerance test. Uro B treatment was found to lower the intestinal triglyceride content and alleviate intestinal inflammation and oxidative stress. Remarkably, Uro B treatment markedly increased the proportion of the mucin-degrading bacterium Akkermansia in metagenomic samples. In conclusion, Uro B exerts beneficial metabolic effects by alleviating HFHS diet-induced features of metabolic syndrome, which is associated with a proportional increase in the population of Akkermansia spp.


Asunto(s)
Cumarinas , Dieta Alta en Grasa , Microbioma Gastrointestinal , Resistencia a la Insulina , Ratones Endogámicos C57BL , Obesidad , Animales , Microbioma Gastrointestinal/efectos de los fármacos , Obesidad/metabolismo , Ratones , Masculino , Dieta Alta en Grasa/efectos adversos , Cumarinas/farmacología , Cumarinas/administración & dosificación , Inflamación , Estrés Oxidativo/efectos de los fármacos
19.
Sci Total Environ ; 915: 170130, 2024 Mar 10.
Artículo en Inglés | MEDLINE | ID: mdl-38242462

RESUMEN

In the metal plating industry, F-53B has been widely used for almost half a century as a replacement for perfluorooctane sulfonate. However, F-53B can reach the food chain and affect human health. Pregnant women have distinct physiological characteristics and may thus be more sensitive to the toxicity of F-53B. In the present study, F-53B was added to the drinking water of pregnant mice during gestation and lactation at doses of 0 mg/L (Ctrl), 0.57 mg/L (L-F), and 5.7 mg/L (H-F). The aim was to explore the potential effects of F-53B on glucolipid metabolism and pregnancy outcomes in dams. Results showed that F-53B induced disordered glucolipid metabolism, adverse pregnancy outcomes, hepatic inflammation, oxidative stress and substantially altered related biochemical parameters in maternal mice. Moreover, F-53B induced remarkable gut barrier damage and gut microbiota perturbation. Correlation analysis revealed that gut microbiota is associated with glucolipid metabolism disorders and hepatic inflammation. The fecal microbiota transplant experiment demonstrated that altered gut microbiota induced by F-53B caused metabolic disorders, adverse pregnancy outcomes, and gut barrier damage. These results suggested that maternal mice exposed to F-53B during gestation and lactation had an increased risk of developing metabolic disorders and adverse pregnancy outcomes and highlighted the crucial role of the gut microbiota in this process, offering novel insights into the risk of F-53B to health.


Asunto(s)
Microbioma Gastrointestinal , Enfermedades Metabólicas , Humanos , Ratones , Embarazo , Femenino , Animales , Resultado del Embarazo , Lactancia , Inflamación
20.
Adv Sci (Weinh) ; 11(26): e2401514, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38696613

RESUMEN

Layered oxides of sodium-ion batteries suffer from severe side reactions on the electrode/electrolyte interface, leading to fast capacity degradation. Although surface reconstruction strategies are widely used to solve the above issues, the utilization of the low-cost wet chemical method is extremely challenging for moisture-sensitive Na-based oxide materials. Here, the solvation tuning strategy is proposed to overcome the deterioration of NaNi1/3Mn1/3Fe1/3O2 in water-based solution and conduct the surface reconstruction. When capturing the water molecules by the solvation structure of cations, here is Li+, the structural collapse and degradation of layered oxides in water-based solvents are greatly mitigated. Furthermore, Li(H2O)3EA+ promotes the profitable Li+/Na+ exchange to build a robust surface, which hampers the decomposition of electrolytes and the structural evolution upon cycling. Accordingly, the lifespan of Li-reinforced materials is prolonged to three times that of the pristine one. This work represents a step forward in understanding the surface reconstruction operated in a water-based solution for high-performance sodium layered oxide cathodes.

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