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1.
Plant Physiol ; 2024 Apr 26.
Artículo en Inglés | MEDLINE | ID: mdl-38668628

RESUMEN

Domestication of tomato (Solanum lycopersicum) has led to large variation in fruit size and morphology. The development of the distal end of the fruit is a critical factor in determining its overall shape. However, the intricate mechanisms underlying distal fruit development require further exploration. This study aimed to investigate the regulatory role of an organelle RNA recognition motif (RRM)-containing protein SlORRM2 in tomato fruit morphology development. Mutant plants lacking SlORRM2 exhibited fruits with pointed tips at the distal end. However, this phenotype could be successfully restored through the implementation of a "functional complementation" strategy. Our findings suggest that the formation of pointed tips in the fruits of the CR-slorrm2 mutants is linked to alterations in the development of the ovary and style. We observed a substantial decrease in the levels of indole-3-acetic acid (IAA) and altered expression of IAA-related response genes in the ovary and style tissues of CR-slorrm2. Moreover, our data demonstrated that SlORRM2 plays a role in regulating mitochondrial RNA editing sites, particularly within genes encoding various respiratory chain subunits. Additionally, the CR-slorrm2 mutants exhibited modified organellar morphology and increased levels of reactive oxygen species (ROS). These findings provide valuable insights into the mechanisms underlying the formation of fruit pointed tips in tomato and offer genetic resources for tomato breeding.

2.
Plant Cell ; 34(7): 2747-2764, 2022 07 04.
Artículo en Inglés | MEDLINE | ID: mdl-35385118

RESUMEN

Many glycine-rich RNA-binding proteins (GR-RBPs) have critical functions in RNA processing and metabolism. Here, we describe a role for the tomato (Solanum lycopersicum) GR-RBP SlRBP1 in regulating mRNA translation. We found that SlRBP1 knockdown mutants (slrbp1) displayed reduced accumulation of total chlorophyll and impaired chloroplast ultrastructure. These phenotypes were accompanied by deregulation of the levels of numerous key transcripts associated with chloroplast functions in slrbp1. Furthermore, native RNA immunoprecipitation-sequencing (nRIP-seq) recovered 61 SlRBP1-associated RNAs, most of which are involved in photosynthesis. SlRBP1 binding to selected target RNAs was validated by nRIP-qPCR. Intriguingly, the accumulation of proteins encoded by SlRBP1-bound transcripts, but not the mRNAs themselves, was reduced in slrbp1 mutants. Polysome profiling followed by RT-qPCR assays indicated that the polysome occupancy of target RNAs was lower in slrbp1 plants than in wild-type. Furthermore, SlRBP1 interacted with the eukaryotic translation initiation factor SleIF4A2. Silencing of SlRBP1 significantly reduced SleIF4A2 binding to SlRBP1-target RNAs. Taking these observations together, we propose that SlRBP1 binds to and channels RNAs onto the SleIF4A2 translation initiation complex and promotes the translation of its target RNAs to regulate chloroplast functions.


Asunto(s)
Solanum lycopersicum , Cloroplastos/metabolismo , Regulación de la Expresión Génica de las Plantas/genética , Solanum lycopersicum/genética , Fotosíntesis/genética , Polirribosomas/metabolismo
3.
Small ; : e2311713, 2024 Feb 07.
Artículo en Inglés | MEDLINE | ID: mdl-38326098

RESUMEN

The discovery of non-precious catalysts for replacing the precious metal of ruthenium in the oxygen evolution reaction (OER) represents a key step in reducing the cost of green hydrogen production. The 2D d-MHOFs, a new 2D materials with controllable oxygen vacancies formed by controlling the degree of coordination bridging between metal hydroxyl oxide and BDC ligands are synthesized at room temperature, exhibit excellent OER properties with low overpotentials of 207  mV at 10 mA cm-2 . High-resolution transmission electron microscopy images and density functional theory calculations demonstrate that the introduction of oxygen vacancy sites leads to a lattice distortion and charge redistribution in the catalysts, enhancing the OER activity of 2D d-MHOFs comprehensively. Synchrotron radiation and in situ Raman/Fourier transform infrared spectroscopy indicate that part of oxygen defect sites on the surface of 2D d-MHOFs are prone to transition to highly active metal hydroxyl oxides during the OER process. This work provides a mild strategy for scalable preparation of 2D d-MHOFs nanosheets with controllable oxygen defects, reveals the relationship between oxygen vacancies and OER performance, and offers a profound insight into the basic process of structural transformation in the OER process.

4.
New Phytol ; 237(4): 1188-1203, 2023 02.
Artículo en Inglés | MEDLINE | ID: mdl-36345265

RESUMEN

RNA editing in plant organelles involves numerous C-U conversions, which often restore evolutionarily conserved codons and may generate new translation initiation and termination codons. These RNA maturation events rely on a subset of nuclear-encoded protein cofactors. Here, we provide evidence of the role of SlRIP1b on RNA editing of mitochondrial transcripts in tomato (Solanum lycopersicum) plants. SlRIP1b is a RIP/MORF protein that was originally identified as an interacting partner of the organellar editing factor SlORRM4. Mutants of SlRIP1b, obtained by CRISPR/Cas9 strategy, exhibited abnormal carpel development and grew into fruit with more locules. RNA-sequencing revealed that SlRIP1b affects the C-U editing of numerous mitochondrial pre-RNA transcripts and in particular altered RNA editing of various cytochrome c maturation (CCM)-related genes. The slrip1b mutants display increased H2 O2 and aberrant mitochondrial morphologies, which are associated with defects in cytochrome c biosynthesis and assembly of respiratory complex III. Taken together, our results indicate that SlRIP1b is a global editing factor that plays a key role in CCM and oxidative phosphorylation system biogenesis during fruit development in tomato plants. These data provide important insights into the molecular roles of organellar RNA editing factors during fruit development.


Asunto(s)
Solanum lycopersicum , Solanum lycopersicum/genética , Edición de ARN/genética , Frutas/genética , Citocromos c/genética , Orgánulos/genética , Plantas/genética , ARN , ARN Mitocondrial
5.
J Exp Bot ; 74(4): 1244-1257, 2023 02 13.
Artículo en Inglés | MEDLINE | ID: mdl-36197803

RESUMEN

Plants and microbial pathogens often engage in a fierce war that determines their survival. Host plants have evolved sophisticated regulatory mechanisms to fine-tune defense responses to counter attacks from pathogens, while pathogens often hijack the lipid-derived phytohormone jasmonate to cause hormonal signaling imbalances for efficient infection. This review focuses on the jasmonate-based warfare between host plants and pathogenic intruders, and further discusses approaches to uncouple plant growth and defense tradeoffs in crop breeding.


Asunto(s)
Fitomejoramiento , Enfermedades de las Plantas , Plantas , Reguladores del Crecimiento de las Plantas , Ciclopentanos , Oxilipinas
6.
Ren Fail ; 45(1): 2164202, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36908215

RESUMEN

Objective: Aromatherapy has been used for patients on maintenance hemodialysis (MHD), but the outcomes are still controversial. Thus, we conducted this study to systematically evaluate the effect of aromatherapy on the quality of life of patients on MHD.Methods: We searched the PubMed, Embays, Scopus, Web of Science, and CNKI databases for randomized controlled trials that evaluated the use of aromatherapy in dialysis patients and reported at least one outcome of interest.Results: Twenty-two relevant studies were included in the meta-analysis. The meta-analysis revealed that aromatherapy significantly increased subjective sleep quality (a lower score indicates better sleep quality) [standardized mean difference (SMD) = -1.52, 95% CI (-2.38, -0.67), p < 0.01] and reduced fatigue [SMD = -1.14, 95% CI (-1.95, -0.33), p = 0.01], anxiety [SMD = -1.38, 95% CI (-2.09, -0.67), p < 0.01], symptoms of restless legs syndrome [RLS; SMD = -1.71, 95% CI (-2.09, -1.33), p < 0.01], and arteriovenous fistula puncture pain [SMD= -1.56, 95% CI (-2.60, -0.52), p < 0.01].Conclusions: Aromatherapy may be used as a novel complementary and alternative therapy to improve sleep quality and reduce fatigue, anxiety, symptoms of RLS, and arteriovenous fistula puncture pain in patients on MHD.


Asunto(s)
Aromaterapia , Humanos , Calidad de Vida , Dolor , Diálisis Renal , Fatiga
7.
J Stroke Cerebrovasc Dis ; 32(3): 106974, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36587509

RESUMEN

PURPOSE: Many studies have shown that cytochrome P450 (CYP) gene polymorphisms are usually associated with an increased risk of cardiovascular and cerebrovascular diseases. To explore the association of CYP2C8 and CYP2J2 gene polymorphisms with hypertensive intracerebral hemorrhage (HICH) in the Han Chinese population. METHODS: Forty HICH patients and 40 control subjects were recruited for this study. Two single nucleotide polymorphisms (SNP) (rs1058932, rs2275622) in the CYP2C8 gene and two SNPs (rs2271800, rs1155002) in the CYP2J2 gene were selected for genotyping by direct sequencing. Statistical analysis was applied to examine the effect of genetic variation on HICH. RESULTS: We found that variant alleles of CYP2C8 rs1058932 (A) and rs2275622 (C) were both significantly associated with HICH, especially in females. We also found significant associations of CYP2C8 rs1058932 (A) and rs2275622 (C) variant alleles with poor outcomes in HICH patients, especially in males. CONCLUSIONS: CYP2C8 gene polymorphisms might increase the risk of HICH in the Han Chinese population and might lead to poor outcomes. This finding adds to the body of literature supporting novel therapeutic strategies for HICH.


Asunto(s)
Citocromo P-450 CYP2J2 , Hemorragia Intracraneal Hipertensiva , Masculino , Femenino , Humanos , Citocromo P-450 CYP2C8/genética , Sistema Enzimático del Citocromo P-450/genética , Polimorfismo de Nucleótido Simple
8.
Yi Chuan ; 45(9): 813-828, 2023 Sep 20.
Artículo en Inglés | MEDLINE | ID: mdl-37731235

RESUMEN

As the important signaling molecules in plants, peptides at femtomolar levels are recognized and bound by the corresponding plasma membrane-localized receptor-like kinases. This triggers the peptide-receptor-mediated intercellular signal transduction for regulation of the stem cell growth and proliferation, modulation of the development of plant organs (such as roots, stems, leaves, flowers, and fruits) as well as coordinating plant responses to biotic and abiotic stresses. With the advancement of in-depth research, an increasing number of studies have revealed the crucial role of peptides in regulating agronomic traits of various crops, including rice (Oryza sativa), maize (Zea mays), potato (Solanum tuberosum) and tomato (Solanum lycopersicum). These findings suggest the great potentials of utilizing the peptide signaling for genetic improvement of crops. In this review, we provide a comprehensive overview of the biological function and molecular mechanism of peptide-receptor signaling in plants, and highlight the advances in research of peptides in regulating crop yield, quality and resistance. Then, we discuss the strategies for the application of peptide signaling in crop improvement. Finally, we point out some future directions for peptide research in plant.


Asunto(s)
Oryza , Transducción de Señal , Productos Agrícolas/genética , Agricultura , Ciclo Celular , Péptidos
9.
Zhongguo Zhong Yao Za Zhi ; 47(23): 6466-6475, 2022 Dec.
Artículo en Zh | MEDLINE | ID: mdl-36604893

RESUMEN

The present study aimed to explore the targets and mechanism of Mailuo Shutong Pills(MSP) in the treatment of ischemic stroke by network pharmacology, and verify the key targets through molecular docking and animal experiment, so as to provide a theoretical basis for the clinical application of MSP. The main chemical ingredients of MSP were obtained by searching against the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform(TCMSP) and relevant literature. The potential targets of the ingredients of MSP in treating ischemic stroke were obtained from SwissTargetPrediction and DisGeNET. Protein-protein interaction(PPI) network was analyzed in STRING and plotted in Cytoscape. Gene Ontology(GO) annotation and Kyoto Encyclopedia of Genes and Genomes(KEGG) pathway enrichment analysis were carried out with DAVID. Molecular docking was simulated to determine the binding activity of active ingredients to key targets in AutoDock Vina. The mouse model of ischemic stroke was established. The mice were classified into a sham group, a model group, and an MSP group. After the administration, cerebral infarction volume was detected by 2,3,5-triphenyltetrazoliumchloride(TTC) staining, and Western blot was performed to determine the levels of phosphatidylinositol 3-kinase(PI3 K), protein kinase B(AKT), nuclear factor-κB(NF-κB) and their phosphorylated proteins. A total of 222 ingredients of MSP were screened out, including beta-sitosterol, quercetin, licochalcone B, and lupiwighteone, which acted on 701 targets. Totally 1 079 targets associated with ischemic stroke were retrieved, among which 192 common targets were shared by MSP and ischemic stroke. The key targets included AKT1, phosphatidylinositol 3-kinase catalytic subunit alpha(PIK3 CA), phosphatidylinositol 3-kinase regulatory subunit 1(PIK3 R1), and nuclear factor-κB p65 subunit(RELA), which were mainly involved in PI3 K/AKT, tumor necrosis factor(TNF), and NF-κB signaling pathways. The results of molecular docking revealed that PI3 K, AKT1, and RELA had good binding ability to the active ingredients of MSP. The animal experiment results showed that compared with the model group, MSP decreased cerebral infarction volume, down-regulated the expression of p-NF-κB, and up-regulated the expression of p-PI3 K and p-AKT in mouse brain. In summary, the active ingredients in MSP may treat cerebral injury by activating PI3 K/AKT signaling pathway and inhibiting NF-κB signaling pathway.


Asunto(s)
Medicamentos Herbarios Chinos , Accidente Cerebrovascular Isquémico , Animales , Ratones , FN-kappa B/genética , Proteínas Proto-Oncogénicas c-akt/genética , Accidente Cerebrovascular Isquémico/tratamiento farmacológico , Simulación del Acoplamiento Molecular , Fosfatidilinositol 3-Quinasas/genética , Infarto Cerebral , Medicamentos Herbarios Chinos/farmacología
10.
Langmuir ; 37(13): 3950-3959, 2021 04 06.
Artículo en Inglés | MEDLINE | ID: mdl-33751892

RESUMEN

A new method of stimuli-responsive proteinosome fabrication with the shell cross-linked micelle as a template is reported in this research. A thermoresponsive diblock copolymer poly[di(ethylene glycol) methyl ether methacrylate]-b-poly[poly(ethylene glycol) methyl ether methacrylate-co-pyridyl disulfide methacrylamide] [PDEGMA-b-P(PEGMA-co-PDSMA)] was synthesized and self-assembled into micelles with PDEGMA cores and P(PEGMA-co-PDSMA) shells at the temperature above its lower critical solution temperature (LCST). Reduced bovine serum albumin (BSA) molecules with six thiol groups were used to cross-link the shells of the micelles by reacting with the pendant pyridyl disulfide groups on the P(PEGMA-co-PDSMA) block. At a temperature below the LCST of the polymer, the PDEGMA cores were dissolved in water, affording proteinosomes with a size of about 50 nm and capsule-like structures. The proteinosome was also thermoresponsive with a phase transition temperature at 35 °C. The fabrication of the proteinosome had no obvious influence on the structure and activity of BSA, and BSA retained most of its secondary structure and esterase-like activity. Because the BSA molecules were connected to the polymer chains through disulfide bonds, they could be released upon addition of dithiothreitol. The in vitro cell viability evaluation and the cellular uptake assay demonstrated that the proteinosome showed low toxicity to NIH 3T3 and 4T1 cells and could be internalized into the 4T1 cells.


Asunto(s)
Micelas , Polímeros , Animales , Bovinos , Disulfuros , Albúmina Sérica Bovina , Temperatura
11.
Macromol Rapid Commun ; 42(21): e2100424, 2021 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-34505724

RESUMEN

Amphiphilic graft copolymers exhibit fascinating self-assembly behaviors. Their molecular architectures significantly affect the morphology and functionality of the self-assemblies. Considering the potential application of amphiphilic graft copolymers in the fabrication of nanocarriers, it is essential to synthesize well-defined graft copolymers with desired functional groups. Herein, the Passerini reaction and molecular recognition are introduced to the synthesis of functional thermoresponsive graft copolymers. A bifunctional monomer 2-((adamantan-1-yl)amino)-1-(4-((2-bromo-2-methylpropanoyl)oxy)phenyl)-2-oxoethyl methacrylate (ABMA) with a bromo group for atom transfer radical polymerization (ATRP) and an adamantyl group for molecular recognition is synthesized through the Passerini reaction. The graft copolymers are prepared by reversible addition-fragmentation transfer (RAFT) copolymerization of ABMA and oligo(ethylene glycol) methyl ether methacrylate (OEGMA) followed by RAFT end group removal and ATRP of di(ethylene glycol)methyl ether methacrylate (DEGMA) initiated by the ABMA units. The graft copolymer P(OEGMA-co-ABMA)-g-PDEGMA can be functionalized with ß-cyclodextrin modified peptides, affording a thermoresponsive biohybrid graft copolymer. At a temperature above its lower critical solution temperature, the biohybrid graft copolymer self-assembles into peptide-modified polymersomes.


Asunto(s)
Metacrilatos , Polímeros , Micelas , Polimerizacion , Temperatura
12.
Angew Chem Int Ed Engl ; 60(21): 12097-12102, 2021 May 17.
Artículo en Inglés | MEDLINE | ID: mdl-33709569

RESUMEN

A facile synthesis is reported of two-dimensional (2D) bimetallic (Fe/Co=1:2) metal-organic frameworks (MOF, ca. 2.2 nm thick) via simple stirring of the reaction mixture of Fe/Co salts and 1,4-benzene dicarboxylic acid (1,4-BDC) in the presence of triethylamine and water at room temperature. The mechanism of the 2D, rather than bulk, MOF was revealed by studying the role of each component in the reaction mixture. It was found that these 2D MOF-Fe/Co(1:2) exhibited excellent electrocatalytic activity for the oxygen evolution reaction (OER) under basic conditions. The electrocatalytic mechanism was disclosed via both experimental results and density functional theory (DFT) calculation. The 2D morphology and co-doping of Fe/Co contributed to the superior OER performance of the 2D MOF-Fe/Co(1:2). The simple and efficient synthetic method is suitable for the mass production and future commercialization of functional 2D MOF with low cost and high yield.

13.
New Phytol ; 228(2): 570-585, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32473605

RESUMEN

Plant organellar RNA editing is a distinct type of post-transcriptional RNA modification that is critical for plant development. We showed previously that the RNA editing factor SlORRM4 is required for mitochondrial function and fruit ripening in tomato (Solanum lycopersicum). However, a comprehensive atlas of the RNA editing mediated by SlORRM4 is lacking. We observed that SlORRM4 is targeted to both chloroplasts and mitochondria, and its knockout results in pale-green leaves and delayed fruit ripening. Using high-throughput sequencing, we identified 12 chloroplast editing sites and 336 mitochondrial editing sites controlled by SlORRM4, accounting for 23% of chloroplast sites in leaves and 61% of mitochondrial sites in fruits, respectively. Analysis of native RNA immunoprecipitation sequencing revealed that SlORRM4 binds to 31 RNA targets; 19 of these targets contain SlORRM4-dependent editing sites. Large-scale analysis of putative SlORRM4-interacting proteins identified SlRIP1b, a RIP/MORF protein. Moreover, functional characterization demonstrated that SlRIP1b is involved in tomato fruit ripening. Our results indicate that SlORRM4 binds to RNA targets and interacts with SlRIP1b to broadly affect RNA editing in tomato organelles. These results provide insights into the molecular and functional diversity of RNA editing factors in higher plants.


Asunto(s)
Edición de ARN , Solanum lycopersicum , Cloroplastos/genética , Cloroplastos/metabolismo , Solanum lycopersicum/genética , Solanum lycopersicum/metabolismo , Orgánulos/genética , Orgánulos/metabolismo , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo , Edición de ARN/genética , Motivo de Reconocimiento de ARN , ARN de Planta/metabolismo
14.
Plant Physiol ; 175(4): 1690-1702, 2017 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-29061908

RESUMEN

RNA editing plays a key posttranscriptional role in gene expression. Existing studies on cytidine-to-uridine RNA editing in plants have focused on maize (Zea mays), rice (Oryza sativa), and Arabidopsis (Arabidopsis thaliana). However, the importance and regulation of RNA editing in several critical agronomic processes are not well understood, a notable example of which is fruit ripening. Here, we analyzed the expression profile of 33 RNA editing factors and identified 11 putative tomato (Solanum lycopersicum) fruit ripening-related factors. A rapid virus-induced gene silencing assay indicated that the organelle RNA recognition motif-containing protein SlORRM4 affected tomato fruit ripening. Knocking out SlORRM4 expression using a clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 genome editing strategy delayed tomato fruit ripening by lowering respiratory rate and ethylene production. Additionally, the expression of numerous genes associated with fruit ripening and mitochondrial functions changed significantly when SlORRM4 was knocked out. Moreover, the loss of SlORRM4 function significantly reduced RNA editing of many mitochondrial transcripts, leading to low-level expression of some core subunits that are critical for mitochondrial complex assembly (i.e. Nad3, Cytc1, and COX II). Taken together, these results indicate that SlORRM4 is involved in RNA editing of transcripts in ripening fruit that influence mitochondrial function and key aspects of fruit ripening.


Asunto(s)
Frutas/fisiología , Regulación de la Expresión Génica de las Plantas/fisiología , Proteínas de Plantas/metabolismo , Edición de ARN/fisiología , Solanum lycopersicum/fisiología , Sistemas CRISPR-Cas , Regulación del Desarrollo de la Expresión Génica/fisiología , Silenciador del Gen , Solanum lycopersicum/genética , Mitocondrias , Mutación , Filogenia , Desarrollo de la Planta/genética , Desarrollo de la Planta/fisiología , Proteínas de Plantas/genética , Edición de ARN/genética
15.
Macromol Rapid Commun ; 37(18): 1520-6, 2016 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-27448248

RESUMEN

A facile and versatile method for the synthesis of Janus graphene oxide (GO) nanosheets with different structures is reported. Based on electrostatic assembly, Janus GO nanosheets can be easily functionalized with a template polymer or be defunctionalized by altering the ionic strength. By using this approach, Janus GO nanosheets are prepared successfully with hydrophobic polystyrene chains on one side and hydrophilic poly(2-(dimethylamino)ethyl methacrylate) chains on the other side.


Asunto(s)
Grafito/química , Microesferas , Nanoestructuras/química , Óxidos/síntesis química , Poliestirenos/química , Electricidad Estática , Óxidos/química , Tamaño de la Partícula , Propiedades de Superficie
16.
J Exp Bot ; 66(15): 4483-95, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-25948705

RESUMEN

Recently, long non-coding RNAs (lncRNAs) have been shown to play critical regulatory roles in model plants, such as Arabidopsis, rice, and maize. However, the presence of lncRNAs and how they function in fleshy fruit ripening are still largely unknown because fleshy fruit ripening is not present in the above model plants. Tomato is the model system for fruit ripening studies due to its dramatic ripening process. To investigate further the role of lncRNAs in fruit ripening, it is necessary and urgent to discover and identify novel lncRNAs and understand the function of lncRNAs in tomato fruit ripening. Here it is reported that 3679 lncRNAs were discovered from wild-type tomato and ripening mutant fruit. The lncRNAs are transcribed from all tomato chromosomes, 85.1% of which came from intergenic regions. Tomato lncRNAs are shorter and have fewer exons than protein-coding genes, a situation reminiscent of lncRNAs from other model plants. It was also observed that 490 lncRNAs were significantly up-regulated in ripening mutant fruits, and 187 lncRNAs were down-regulated, indicating that lncRNAs could be involved in the regulation of fruit ripening. In line with this, silencing of two novel tomato intergenic lncRNAs, lncRNA1459 and lncRNA1840, resulted in an obvious delay of ripening of wild-type fruit. Overall, the results indicated that lncRNAs might be essential regulators of tomato fruit ripening, which sheds new light on the regulation of fruit ripening.


Asunto(s)
Frutas/crecimiento & desarrollo , Regulación de la Expresión Génica de las Plantas , Proteínas de Plantas/genética , ARN Largo no Codificante/genética , ARN de Planta/genética , Solanum lycopersicum/genética , Frutas/genética , Frutas/metabolismo , Solanum lycopersicum/crecimiento & desarrollo , Solanum lycopersicum/metabolismo , Filogenia , Proteínas de Plantas/metabolismo , ARN Largo no Codificante/metabolismo , ARN de Planta/metabolismo , Análisis de Secuencia de ARN
17.
BMC Public Health ; 15: 1116, 2015 Nov 12.
Artículo en Inglés | MEDLINE | ID: mdl-26563138

RESUMEN

BACKGROUND: From 1973 to 2005, the lung cancer mortality in Xuanwei had increased constantly. Effect analysis of age and non-age factors on lung cancer is important for local policy-making. METHODS: Demographic and death data was collected and used. Factors of lung cancer were classified into age and non-age factors. The contribution of the two factors to lung cancer was evaluated by method of decomposing the differences of mortality rate. RESULTS: For males, the non-age factors were the major contributor to growth of lung cancer mortality, and 78.46% of all growth was attributed to non-age factors. For females, the non-age factors were the absolute contributor to growth of lung cancer in 1973-1992. From 1992 to 2005, the contribution proportion had reduced to 75.39%. CONCLUSIONS: Aging was one of risk factors for lung cancer in Xuanwei, but not the main factor. It was supposed that multiple environmental risk factors were related with high growth of lung cancer in Xuanwei. Policy-making should focus on the non-age factors.


Asunto(s)
Contaminantes Atmosféricos/análisis , Carbón Mineral/efectos adversos , Exposición a Riesgos Ambientales/efectos adversos , Neoplasias Pulmonares/epidemiología , Adulto , Anciano , Contaminación del Aire Interior/efectos adversos , China/epidemiología , Femenino , Humanos , Neoplasias Pulmonares/prevención & control , Masculino , Persona de Mediana Edad , Prevalencia , Factores de Riesgo , Distribución por Sexo
18.
ACS Appl Mater Interfaces ; 16(25): 32503-32515, 2024 Jun 26.
Artículo en Inglés | MEDLINE | ID: mdl-38875477

RESUMEN

Hierarchically structural particles (HSPs) are highly regarded as favorable nanomaterials for superhydrophobic coating due to their special multiscale structure and surface physicochemical properties. However, most of the superhydrophobic coatings constructed from HSPs are monofunctional, constraining their broader applications. Moreover, traditional methods for constructing HSPs mostly rely on complicated chemical routes and template removal. Herein, we propose an innovative strategy (one-pot method) for producing multifunctional hierarchical hybrid particles (HHPs). Polysilsesquioxane (PSQ), generated from hydrolysis condensation of methyltriethoxylsilane, is used as the sole stabilizer to anchor on the surface of styrene and short fluoroalkyl compound tridecafluorooctyl acrylate comonomers droplets, forming a mesoporous PSQ shell. Subsequently, the comonomers inside of the shell perform restricted polymerization to generate the HHP due to the driving of the mesoporous capillary force. The HHP is then mixed with waterborne polyurethane (WPU) to develop a robust nanocomposite coating (WPU-HHP). Through the deliberate design of the HHP components, the WPU-HHP coating has thermal insulation, photoluminescence properties, and the ability to achieve a wettability transition during abrasion. Our research has achieved the integration of multifunctionality in one waterborne hybrid system, broadening the application areas of nanocomposite coatings.

19.
Langmuir ; 29(34): 10727-36, 2013 Aug 27.
Artículo en Inglés | MEDLINE | ID: mdl-23895359

RESUMEN

Carboxyl groups at the periphery of reduced graphene oxide (RGO) sheets are converted to amine groups by reaction with N-hydroxysuccinimide and 1,3-diaminopropane, and a free-radical polymerization initiator is anchored to the RGO sheets. Poly(acrylamide) (PAM) polymer brushes on RGO sheets (RGO/PAM) are synthesized by in situ free-radical polymerization. The heavy metals, Pb(II), and the benzenoid compounds, methylene blue, (MB) were selected and adsorbed by RGO/PAM composites, and the adsorption capacity of RGO/PAM for Pb(II) and MB was measured. The experimental data of RGO/PAM isotherms for Pb(II) and MB followed the Langmuir isotherm model. The RGO/PAM displays adsorption capacities as high as 1000 and 1530 mg/g for Pb(II) and MB, respectively, indicating RGO/PAM is a good adsorbent for the adsorption of Pb(II) and MB. The adsorption kinetics of Pb(II) and MB onto RGO/PAM can be well fitted to the pseudo-second-order model. The adsorption processes of Pb(II) and MB onto RGO/PAM are spontaneous at 298, 308, and 318 K.

20.
J Intensive Med ; 3(4): 320-325, 2023 Oct 31.
Artículo en Inglés | MEDLINE | ID: mdl-38028642

RESUMEN

Vitamin C-based cluster therapy, which involves the combined application of hydrocortisone, vitamin C, and thiamine (HAT), is a recently proposed new treatment option for sepsis on top of conventional treatment. This therapy has a strong theoretical basis, but its clinical efficacy remains inconclusive. This review summarizes the rationale for HAT therapy for sepsis and describes the evaluation of its efficacy in clinical observational studies and randomized controlled trials, with the aim of providing a reference for the future clinical practice application of HAT therapy in sepsis.

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