Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Resultados 1 - 20 de 746
Filtrar
1.
Proc Natl Acad Sci U S A ; 120(52): e2302761120, 2023 Dec 26.
Artículo en Inglés | MEDLINE | ID: mdl-38109527

RESUMEN

For degradation of ß-lactam antibiotics pollution in waters, the strained ß-lactam ring is the most toxic and resistant moiety to biodegrade and redox-chemically treat among their functional groups. Hydrolytically opening ß-lactam ring with Lewis acid catalysts has long been recognized as a shortcut, but at room temperature, such hydrolysis is too slow to be deployed. Here, we found when Cu2+ was immobilized on imine-linked COF (covalent organic framework) (Cu2+/Py-Bpy-COF, Cu2+ load is 1.43 wt%), as-prepared composite can utilize the light irradiation (wavelength range simulated sunlight) to in situ heat anchored Cu2+ Lewis acid sites through an excellent photothermal conversion to open the ß-lactam ring followed by a desired full-decarboxylation of hydrolysates. Under 1 W/cm2 simulated sunlight, Cu2+/Py-Bpy-COF powders placed in a microfiltration membrane rapidly cause a temperature rising even to ~211.7 °C in 1 min. It can effectively hydrolyze common ß-lactam antibiotics in waters and even antibiotics concentration is as high as 1 mM and it takes less than 10 min. Such photo-heating hydrolysis rate is ~24 times as high as under dark and ~2 times as high as Cu2+ homogenous catalysis. Our strategy significantly decreases the interference from generally coexisting common organics in waters and potential toxicity concerns of residual carboxyl groups in hydrolysates and opens up an accessible way for the settlement of ß-lactam antibiotics pollutants by the only energy source available, the sunlight.


Asunto(s)
Contaminantes Ambientales , Antibióticos Betalactámicos , Calor , Dominio Catalítico , Ácidos de Lewis , Antibacterianos/metabolismo , beta-Lactamas , Monobactamas
2.
Proc Natl Acad Sci U S A ; 119(35): e2114064119, 2022 08 30.
Artículo en Inglés | MEDLINE | ID: mdl-35994659

RESUMEN

Plants are resistant to most microbial species due to nonhost resistance (NHR), providing broad-spectrum and durable immunity. However, the molecular components contributing to NHR are poorly characterised. We address the question of whether failure of pathogen effectors to manipulate nonhost plants plays a critical role in NHR. RxLR (Arg-any amino acid-Leu-Arg) effectors from two oomycete pathogens, Phytophthora infestans and Hyaloperonospora arabidopsidis, enhanced pathogen infection when expressed in host plants (Nicotiana benthamiana and Arabidopsis, respectively) but the same effectors performed poorly in distantly related nonhost pathosystems. Putative target proteins in the host plant potato were identified for 64 P. infestans RxLR effectors using yeast 2-hybrid (Y2H) screens. Candidate orthologues of these target proteins in the distantly related non-host plant Arabidopsis were identified and screened using matrix Y2H for interaction with RxLR effectors from both P. infestans and H. arabidopsidis. Few P. infestans effector-target protein interactions were conserved from potato to candidate Arabidopsis target orthologues (cAtOrths). However, there was an enrichment of H. arabidopsidis RxLR effectors interacting with cAtOrths. We expressed the cAtOrth AtPUB33, which unlike its potato orthologue did not interact with P. infestans effector PiSFI3, in potato and Nicotiana benthamiana. Expression of AtPUB33 significantly reduced P. infestans colonization in both host plants. Our results provide evidence that failure of pathogen effectors to interact with and/or correctly manipulate target proteins in distantly related non-host plants contributes to NHR. Moreover, exploiting this breakdown in effector-nonhost target interaction, transferring effector target orthologues from non-host to host plants is a strategy to reduce disease.


Asunto(s)
Arabidopsis , Resistencia a la Enfermedad , Especificidad del Huésped , Nicotiana , Enfermedades de las Plantas , Proteínas de Plantas , Arabidopsis/metabolismo , Arabidopsis/parasitología , Oomicetos/metabolismo , Phytophthora infestans/metabolismo , Enfermedades de las Plantas/parasitología , Enfermedades de las Plantas/prevención & control , Proteínas de Plantas/metabolismo , Solanum tuberosum/parasitología , Nicotiana/metabolismo , Nicotiana/parasitología , Técnicas del Sistema de Dos Híbridos
3.
Plant J ; 115(2): 398-413, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-37021636

RESUMEN

The potato's most devastating disease is late blight, which is caused by Phytophthora infestans. Whereas various resistance (R) genes are known, most are typically defeated by this fast-evolving oomycete pathogen. However, the broad-spectrum and durable R8 is a vital gene resource for potato resistance breeding. To support an educated deployment of R8, we embarked on a study on the corresponding avirulence gene Avr8. We overexpressed Avr8 by transient and stable transformation, and found that Avr8 promotes colonization of P. infestans in Nicotiana benthamiana and potato, respectively. A yeast-two-hybrid (Y2H) screen showed that AVR8 interacts with a desumoylating isopeptidase (StDeSI2) of potato. We overexpressed DeSI2 and found that DeSI2 positively regulates resistance to P. infestans, while silencing StDeSI2 downregulated the expression of a set of defense-related genes. By using a specific proteasome inhibitor, we found that AVR8 destabilized StDeSI2 through the 26S proteasome and attenuated early PTI responses. Altogether, these results indicate that AVR8 manipulates desumoylation, which is a new strategy that adds to the plethora of mechanisms that Phytophthora exploits to modulate host immunity, and StDeSI2 provides a new target for durable resistance breeding against P. infestans in potato.


Asunto(s)
Phytophthora infestans , Solanum tuberosum , Fitomejoramiento , Inmunidad de la Planta , Solanum tuberosum/genética , Enfermedades de las Plantas
4.
BMC Genomics ; 25(1): 158, 2024 Feb 08.
Artículo en Inglés | MEDLINE | ID: mdl-38331736

RESUMEN

BACKGROUND: Studies have confirmed that Infectious bovine rhinotracheitis virus (IBRV) infection induces mitochondrial damage. MicroRNAs (miRNAs) are a class of noncoding RNA molecules, which are involved in various biological processes and pathological changes associated with mitochondrial damage. It is currently unclear whether miRNAs participate in IBRV-induced mitochondrial damage in Madin-Darby bovine kidney (MDBK) cells. RESULTS: In the present study, we used high-throughput sequencing technology, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis to screen for mitochondria-related miRNAs and messenger RNAs (mRNAs). In total, 279 differentially expressed miRNAs and 832 differentially expressed mRNAs were identified in 6 hours (IBRV1) versus 24 hours (IBRV2) after IBRV infection in MDBK cells. GO and KEGG enrichment analysis revealed that 42 differentially expressed mRNAs and 348 target genes of differentially expressed miRNAs were correlated with mitochondrial damage, and the miRNA-mitochondria-related target genes regulatory network was constructed to elucidate their potential regulatory relationships. Among the 10 differentially expressed miRNAs, 8 showed expression patterns consistent with the high-throughput sequencing results. Functional validation results showed that overexpression of miR-10a and miR-182 aggravated mitochondrial damage, while inhibition of miR-10a and miR-182 alleviated mitochondrial damage. CONCLUSIONS: This study not only revealed the expression changes of miRNAs and mRNAs in IBRV-infected MDBK cells, but also revealed possible biological regulatory relationship between them. MiR-10a and miR-182 may have the potential to be developed as biomarkers for the diagnosis and treatment of IBRV. Together, Together, these data and analyses provide additional insights into the roles of miRNA and mRNA in IBRV-induced mitochondria damage.


Asunto(s)
Herpesvirus Bovino 1 , MicroARNs , Animales , Bovinos , MicroARNs/genética , MicroARNs/metabolismo , Herpesvirus Bovino 1/genética , Células Epiteliales/metabolismo , Riñón/metabolismo , Redes Reguladoras de Genes , ARN Mensajero/genética , Perfilación de la Expresión Génica
5.
Am J Epidemiol ; 2024 Jun 12.
Artículo en Inglés | MEDLINE | ID: mdl-38872336

RESUMEN

Non-optimal ambient temperatures are risk factors for myocardial infarction (MI) and urban-rural temperature differences in the context of climate change may have caused and will lead to differential association between temperature and MI. We collected daily mean temperature and daily MI deaths from 1 January 2016 to 31 December 2020 in Anhui Province, China. A distributed lag nonlinear model was performed to estimate the area-specific association of heat and cold (defined as the 2.5th and 97.5th percentile of the daily mean temperature) with MI mortality; the random-effects meta-analysis was then used to pool the effects of cold and heat. We found the risk of MI death due to cold was higher in rural areas [relative risk (RR): 1.13, 95% confidence interval (CI): 1.02-1.26, lag0) than in urban areas (RR: 0.99, 95% CI: 0.80-1.21, lag0), whereas the risk of MI death associated with heat was higher in urban areas (RR: 1.14, 95% CI: 1.03-1.27, lag0) than in rural areas (RR: 1.04, 95% CI: 0.99-1.10, lag0). Our findings may help to develop targeted protective strategies to reduce the adverse effects of cold and heat on cardiovascular disease.

6.
J Antimicrob Chemother ; 79(5): 1142-1152, 2024 05 02.
Artículo en Inglés | MEDLINE | ID: mdl-38551451

RESUMEN

OBJECTIVES: To assess the profiles and determinants of drug resistance in HIV-1-infected individuals undergoing ART in Guangxi. METHODS: Samples and data were collected from HIV-1-infected individuals experiencing virological failure post-ART from 14 cities in Guangxi. Sequencing of the HIV-1 pol gene was conducted, followed by analysis for drug resistance mutations using the Stanford University HIV Drug Resistance Database. Logistic regression was employed to identify potential risk factors associated with both HIV drug resistance and mortality. RESULTS: A total of 8963 individuals with pol sequences were included in this study. The overall prevalence of HIV-1 drug resistance (HIVDR) was 42.43% (3808/8963), showing a decrease from 59.62% to 41.40% from 2016 to 2023. Factors such as being aged ≥50 years, male, Han nationality, lower education levels, occupations including workers, peasants and children, AIDS, pre-treatment CD4 T cell counts <200 cells/mm3, infection with CRF01_AE and CRF55_01B subtypes, and ART regimen lamivudine/zidovudine/nevirapine were associated with higher susceptibility to HIVDR. The common mutations were M184V (17.38%) and K103N (22.14%). Additionally, the prevalence of M184V, S68G, M41L and G190A were different between the Han and Zhuang populations. Factors including age, gender, ethnicity, education level, occupation, infectious route, clinical stage, viral load, subtype, ART regimen and HIVDR showed significant associations with mortality. CONCLUSIONS: The factors contributing to drug resistance in the HIV-1 ART individuals in Guangxi appear to be notably intricate. Continuous reinforcement of drug resistance surveillance is imperative, accompanied by the optimization of ART regimens to mitigate virological failures effectively.


Asunto(s)
Fármacos Anti-VIH , Farmacorresistencia Viral , Infecciones por VIH , VIH-1 , Humanos , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/virología , Infecciones por VIH/epidemiología , VIH-1/genética , VIH-1/efectos de los fármacos , China/epidemiología , Masculino , Farmacorresistencia Viral/genética , Femenino , Persona de Mediana Edad , Adulto , Fármacos Anti-VIH/uso terapéutico , Fármacos Anti-VIH/farmacología , Factores de Riesgo , Adulto Joven , Prevalencia , Mutación , Anciano , Genotipo , Adolescente , Productos del Gen pol del Virus de la Inmunodeficiencia Humana/genética , Terapia Antirretroviral Altamente Activa , Carga Viral/efectos de los fármacos , Niño
7.
Chemistry ; 30(13): e202400007, 2024 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-38258423

RESUMEN

Modern nanodrug delivery technologies offer new approaches in the fight against cancer. However, due to the heterogeneity of tumors and side effects of anticancer drugs, monotherapies are less effective. Herein, we report a novel pH and light dual-responsive nanodrug delivery platform. The platform was formed by sulfonate-modified gold nanoparticles loaded with the anticancer drugs doxorubicin (DOX) and glucose oxidase (GOx) and then covered by water-soluble pillar[5]arene as a nanovalve. The nanovalve formed by the host-guest interaction between pillar[5]arene and the sulfonic acid group grafted onto the gold nanoparticle increased the drug loading capacity of the nanoplatform and enabled sustained release of the drug in a simulated weakly acidic tumor environment. The released GOx can consume intracellular glucose, namely, starvation therapy, while the generated hydrogen peroxide can further kill tumor cells, complementing DOX chemotherapy. Gold nanoparticles have good photothermal conversion ability and can enhance the drugs release rate under specific wavelengths of light irradiation. The results of in vitro and in vivo experiments showed that this novel nanodrug delivery platform has good biocompatibility and better therapeutic efficacy relative to monotherapy. This study successfully developed a combined chemo/starvation therapy strategy with good tumor suppression, providing a new approach for cancer treatment.


Asunto(s)
Antineoplásicos , Nanopartículas del Metal , Nanopartículas , Neoplasias , Humanos , Oro , Fototerapia , Sistemas de Liberación de Medicamentos , Antineoplásicos/farmacología , Antineoplásicos/uso terapéutico , Doxorrubicina/farmacología , Doxorrubicina/uso terapéutico , Neoplasias/tratamiento farmacológico , Liberación de Fármacos , Línea Celular Tumoral
8.
Chemistry ; : e202402102, 2024 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-39087665

RESUMEN

In photocatalysis, the resulted heat by the relaxation of most of incident light no longer acts as the industrially favorite driving force back to the target photo-reaction due to more or less the negative relation between photocatalytic efficiency and temperature. Here, we reported a visible light-sensitized protocol that completely reversed the negatively temperature-dependent efficiency in photo-driven CO2 methanation with saturated water vapor. Uniform Pt/N-TiO2/PDI self-assembly material decisively injects the excited electron of PDI sensitizer into N-TiO2 forming Ti-H hydride which is crucially temperature-dependent nucleophilic species to dominate CO2 methanation, rather than conventionally separated and trapped electrons on the conductor band. Meanwhile, the ternary composite lifts itself temperature from room temperature to 305.2 °C within 400 s only by the failure excitation upon simulated sunlight of 2.5 W/cm2, and smoothly achieves CO2 methanation with a record number of 4.98 mmol g-1 h-1 rate, compared to less than 0.02 mol g-1 h-1 at classic Pt/N-TiO2/UV photocatalysis without PDI sensitization. This approach can reuse ~53.9 % of the relaxed heat energy from the incident light thereby allow high-intensity incident light as strong as possible within a flowing photo-reactor, opening the most likely gateways to industrialization.

9.
Exp Eye Res ; 241: 109829, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38354943

RESUMEN

The mechanism of myopia and the associated retinopathy remains unclear, and dysregulated microRNAs (miRNAs) are implicated in this disease. In this research, we purposed to find out the regulatory function that miRNAs play in myopia and the associated retinopathy. We first performed miRNA microarray analysis in a lens-induced myopia mouse model and found that miR-9-5p, miR-96-5p, miR-182-5p, miR-183-5p, and miR-181a-5p were elevated in the myopic retina. Then, we examined the functions and regulatory mechanisms of miR-181a-5p utilizing the human retinal pigment epithelium (RPE) cell line ARPE-19 by overexpressing miR-181a-5p. RNA sequencing (RNA-Seq) and qRT-PCR analysis were employed to identify differentially expressed genes after transfection. The qRT‒PCR outcomes, immunoblotting, and immunofluorescence indicated that the SGSH expression was significantly hindered through miR-181a-5p overexpression. MiR-181a-5p overexpression has the ability to elevate RPE cell proliferation and induce autophagy by targeting SGSH. We validated the negative influence of miR-181a-5p on the SGSH expression through luciferase reporter assays, which demonstrated its ability to target the 3' untranslated region of SGSH. The reversal of implications of miR-181a-5p overexpression was achieved through SGSH upregulation. We provided novel perspectives into the miR-181a-5p function in regulating myopia development and may serve as a target for therapy and molecular biomarker for myopia.


Asunto(s)
MicroARNs , Enfermedades de la Retina , Animales , Humanos , Ratones , Autofagia/genética , Proliferación Celular , MicroARNs/genética , MicroARNs/metabolismo , Regulación hacia Arriba
10.
Ann Hematol ; 103(10): 3855-3866, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-38267560

RESUMEN

For patients with acute myeloid leukemia (AML) who are not candidates for allogeneic stem cell transplantation (SCT) or do not have a human leukocyte antigen (HLA)-matched donor, it is unclear whether autologous SCT (ASCT) has a better prognosis after the first complete response (CR1) compared to further chemotherapy treatment. A meta-analysis evaluating ASCT compared to further chemotherapy for AML patients in CR1 was performed. The Medline, Embase, Cochrane Controlled Trials Registry, Cochrane Library, Web of Science, and National Knowledge Infrastructure of China databases were searched for relevant literature as of May 26, 2023. Eligible studies included prospectively enrolled adults with AML and randomized first-time respondent patients who did not have a matched sibling donor. Fourteen randomized controlled trials were identified and included 4281 participants, of which 1499 patients received ASCT and 2782 underwent chemotherapy and continued follow-up. In patients with AML in CR1, a lower relapse rate was associated with ASCT compared to chemotherapy [odds ratio (OR) = 0.49, 95% confidence interval (CI) = 0.41-0.57]. Significant disease-free survival (DFS; OR = 1.37, 95% CI = 1.02-1.84) and relapse-free survival (RFS; OR = 2.78, 95% CI = 1.28-6.02) ASCT benefits were documented, and there was no difference in the overall survival (OS) when the studies were pooled (OR = 1.12, 95% CI = 0.85-1.48). The study results indicated that after the first remission, AML patients receiving autologous stem cell transplantation had higher DFS and RFS, similar OS, and lower relapse compared to patients undergoing chemotherapy treatment. This indicated that autologous stem cell transplantation may have a better prognosis.


Asunto(s)
Trasplante de Células Madre Hematopoyéticas , Leucemia Mieloide Aguda , Humanos , Leucemia Mieloide Aguda/terapia , Leucemia Mieloide Aguda/mortalidad , Leucemia Mieloide Aguda/tratamiento farmacológico , Trasplante Autólogo , Ensayos Clínicos Controlados Aleatorios como Asunto , Supervivencia sin Enfermedad , Adulto , Femenino , Masculino , Autoinjertos
11.
Mol Cell Biochem ; 2024 Mar 21.
Artículo en Inglés | MEDLINE | ID: mdl-38512536

RESUMEN

In recent years, nonalcoholic fatty liver disease (NAFLD) has become a more serious public health issue worldwide. This study strived to investigate the molecular mechanism of pathogenesis of NAFLD and explore promising diagnostic and therapeutic targets for NAFLD. Raw data from GSE130970 were downloaded from the Gene Expression Omnibus database. We used the dataset to analyze the expression levels of cuproptosis-related genes in NAFLD patients and healthy controls to identify the differentially expressed cuproptosis-related genes (DECRGs). The relationship and potential mechanism between DECRGs and clinicopathological factors were examined by enrichment analysis and two consensus clustering methods. We screened key DECRGs based on Random Forest (RF), and then verified the key DECRGs in NAFLD patients, high-fat diet (HFD)-fed mice, and palmitic acid-induced AML12 cells. ROC analysis showed good diagnostic function of DECRGs in normal and NAFLD liver tissue. Two consensus clusters indicated the important role of cuproptosis in the development of NAFLD. We screened for key DECRGs (DLD, DLAT) based on RF and found a close relationship between the DECRGs and clinicopathological factors. We collected clinical blood samples to verify the differences in gene expression levels by qPCR. In addition, we further verified the expression levels of DLD and DLAT in HFD mice and AML12 cells, which showed the same results. This study provides a novel perspective on the pathogenesis of NAFLD. We identified two cuproptosis-related genes that are closely related to NAFLD. These genes may play a significant role in the molecular pathogenesis of NAFLD, which may be useful to make progress in the diagnosis and treatment of NAFLD.

12.
Surg Endosc ; 38(8): 4512-4520, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38914885

RESUMEN

BACKGROUND: Endoscopic balloon dilation (EBD) is a safe and effective treatment for Crohn's disease (CD)-associated strictures. However, serial EBDs have rarely been reported. This study aimed to evaluate the efficacy and safety of serial EBDs for treating CD-associated duodenal strictures compared with intermittent EBDs. METHODS: Patients with CD-associated duodenal strictures who underwent EBD were recruited. The clinical data, stricture characteristics, number of EBDs, dilation diameter, complications, surgical interventions, and follow-up periods were recorded. Patients were divided into a serial dilation group and an intermittent dilation group to analyze the differences in safety and efficacy. RESULTS: Forty-five patients with duodenal CD-associated strictures underwent a total of 139 dilations. A total of 23 patients in the serial dilation group underwent 72 dilations, for a median of 3 (range 3 ~ 4) dilations per patient, and 22 patients in the intermittent dilation group underwent 67 dilations, for a median of 3 (range 1 ~ 6) dilations per patient. Technical success was achieved in 97.84% (136/139) of the patients. During the follow-up period, three patients in the intermittent dilation group underwent surgery, and the total clinical efficacy was 93.33% (42/45). No difference in safety or short-term efficacy was noted between the two groups, but serial EBDs exhibited significantly greater clinical efficacy between 6 months and 2 years. No significant difference in recurrence-free survival was observed, but the median longest recurrence-free survival and recurrence-free survival after the last EBD in the serial dilation group were 693 days (range 298 ~ 1381) and 815 days (range 502 ~ 1235), respectively, which were significantly longer than the 415 days (range 35 ~ 1493) and 291 days (range 34 ~ 1493) in the intermittent dilation group (p = 0.013 and p = 0.000, respectively). At the last follow-up, the mean diameter of the duodenal lumen was 1.17 ± 0.07 cm in the serial dilation group, which was greater than the 1.11 ± 0.10 cm in the intermittent dilation group (p = 0.018). We also found that the Simple Endoscopic Score for Crohn's Disease was associated with an increased risk of surgical intervention (HR 2.377, 95% CI 1.125-5.020; p = 0.023) and recurrence at 6 months after the last EBD (HR 0.698, 95% CI 0.511-0.953; p = 0.024), as assessed by univariate analysis. CONCLUSIONS: Compared to the intermittent EBDs, serial EBDs for duodenal CD-associated strictures exhibit greater clinical efficacy within two years and could delay stricture recurrence. We suggest that serial EBDs can be a novel option for endoscopic treatment of duodenal CD-associated strictures.


Asunto(s)
Enfermedad de Crohn , Dilatación , Humanos , Enfermedad de Crohn/complicaciones , Enfermedad de Crohn/terapia , Femenino , Masculino , Adulto , Dilatación/métodos , Dilatación/instrumentación , Persona de Mediana Edad , Resultado del Tratamiento , Constricción Patológica/etiología , Constricción Patológica/cirugía , Adulto Joven , Estudios Retrospectivos , Obstrucción Duodenal/etiología , Obstrucción Duodenal/terapia , Obstrucción Duodenal/cirugía , Adolescente , Enfermedades Duodenales/terapia , Enfermedades Duodenales/etiología , Enfermedades Duodenales/cirugía
13.
Phytopathology ; 114(5): 1050-1056, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38709298

RESUMEN

Auxin is an important phytohormone that regulates diverse biologic processes, including plant growth and immunity. Indole-3-acetic acid (IAA), known as one of the main forms of auxin, is able to activate plant immunity. However, it is unknown whether IAA enhances plant resistance and/or suppresses the growth of the fungal pathogen Magnaporthe oryzae. Here, we found that IAA could induce expression levels of pathogenesis-related genes to enhance disease resistance and could control the development of blast disease through inhibiting M. oryzae infection. Exogenous IAA suppressed mycelial growth and delayed spore germination by inhibiting fungal endogenous IAA biosynthesis and impairing redox homeostasis, respectively. When applied to a field test, two IAA analogues, 1-naphthaleneacetic acid and 2,4-dichlorophenoxy acetic acid, can effectively control rice blast disease. Our study advances the understanding of IAA in controlling rice blast disease through suppressing pathogen growth and enhancing plant resistance.


Asunto(s)
Resistencia a la Enfermedad , Ácidos Indolacéticos , Oryza , Enfermedades de las Plantas , Ácidos Indolacéticos/metabolismo , Oryza/microbiología , Oryza/crecimiento & desarrollo , Oryza/inmunología , Enfermedades de las Plantas/microbiología , Enfermedades de las Plantas/inmunología , Enfermedades de las Plantas/prevención & control , Resistencia a la Enfermedad/genética , Resistencia a la Enfermedad/efectos de los fármacos , Reguladores del Crecimiento de las Plantas/metabolismo , Regulación de la Expresión Génica de las Plantas , Ascomicetos/efectos de los fármacos , Ascomicetos/fisiología , Ácidos Naftalenoacéticos/farmacología , Esporas Fúngicas/efectos de los fármacos , Esporas Fúngicas/crecimiento & desarrollo
14.
J Nanobiotechnology ; 22(1): 9, 2024 Jan 03.
Artículo en Inglés | MEDLINE | ID: mdl-38169389

RESUMEN

Glomerulonephritis (GN) is the most common cause of end-stage renal failure worldwide; in most cases, it cannot be cured and can only delay the progression of the disease. At present, the main treatment methods include symptomatic therapy, immunosuppressive therapy, and renal replacement therapy. However, effective treatment of GN is hindered by issues such as steroid resistance, serious side effects, low bioavailability, and lack of precise targeting. With the widespread application of nanoparticles in medical treatment, novel methods have emerged for the treatment of kidney diseases. Targeted transportation of drugs, nucleic acids, and other substances to kidney tissues and even kidney cells through nanodrug delivery systems can reduce the systemic effects and adverse reactions of drugs and improve treatment effectiveness. The high specificity of nanoparticles enables them to bind to ion channels and block or enhance channel gating, thus improving inflammation. This review briefly introduces the characteristics of GN, describes the treatment status of GN, systematically summarizes the research achievements of nanoparticles in the treatment of primary GN, diabetic nephropathy and lupus nephritis, analyzes recent therapeutic developments, and outlines promising research directions, such as gas signaling molecule nanodrug delivery systems and ultrasmall nanoparticles. The current application of nanoparticles in GN is summarized to provide a reference for better treatment of GN in the future.


Asunto(s)
Nefropatías Diabéticas , Glomerulonefritis , Nefritis Lúpica , Humanos , Glomerulonefritis/tratamiento farmacológico , Glomerulonefritis/metabolismo , Riñón/metabolismo , Nanotecnología
15.
Retina ; 2024 Aug 09.
Artículo en Inglés | MEDLINE | ID: mdl-39141850

RESUMEN

PURPOSE: The goal of the study is to introduce a modified technique for the removal of subretinal fluid during scntleral buckling (SB) to treat rhegmatogenous retinal detachment (RRD). METHODS: This case series study was comprised of 18 cases of RRD patients suffering from a novel automated aspiration of subretinal fluid method during SB. The cases took place from July 2023 to November 2023 at the First Affiliated Hospital of USTC. Preoperative and intraoperative situations were evaluated, and spectral-domain optical coherence (SDOCT) and scanning laser ophthalmoscopy were used to observe the absorption of SRF in the early postoperative period. RESULTS: The SRF method's automated aspiration primarily eliminated the SRF of all 18 RRD cases during SB surgery, leading to retinal reattachment, as showed by SLO. The method did not cause extensive intraoperative hemorrhage and had no risk of retinal incarceration or other complications. The SDOCT showed that the height of SRF in the macular area decreased in 10 cases (66.67%), leaving just a thin layer; was completely cleared in two cases (13.33%); had just a macular single bleb in one case (6.67%); and had several blebs left in two cases (13.33%). CONCLUSIONS: These findings suggest that the automated aspiration of the SRF method is effective, controllable, and beneficial for retinal reattachment, especially in the early postoperative period. Complications with this method were rare.

16.
Nano Lett ; 23(8): 3401-3411, 2023 04 26.
Artículo en Inglés | MEDLINE | ID: mdl-37036326

RESUMEN

Blood and lymph are two main pathways of tumor metastasis; however, hematogenous metastasis and lymphatic metastasis are difficult to inhibit simultaneously. Ferroptosis provides a new breakthrough for metastasis inhibition, but how to effectively trigger ferroptosis in tumor cells remains a major challenge. Metastatic tumor cells are prone to ferroptosis in blood, while they may be protected from ferroptosis in lymph. In this study, a nanoplatform DA/RSL3 was constructed for the intracellular codelivery of the polyunsaturated arachidonic acid (AA) and the GPX4 inhibitor RSL3, which could not only induce ferroptosis but also alleviate ferroptosis resistance. As a result, DA/RSL3 effectively triggered ferroptosis in tumor cells, thereby impairing the ability of tumor cells to metastasize in both blood and lymph. Furthermore, a fucoidan blocking strategy was proposed to maximize the efficacy of DA/RSL3. Fu+DA/RSL3 showed excellent efficacy in 4T1 tumor-bearing mice. This ferroptosis nanotherapy is promising for metastatic cancer treatment.


Asunto(s)
Ferroptosis , Ratones , Animales , Fosfolípido Hidroperóxido Glutatión Peroxidasa/metabolismo , Fosfolípido Hidroperóxido Glutatión Peroxidasa/farmacología , Metástasis Linfática
17.
J Integr Plant Biol ; 2024 Oct 23.
Artículo en Inglés | MEDLINE | ID: mdl-39441565

RESUMEN

The loss and gain of OsNAS3 function both positively influence plant disease resistance. Overexpression of OsNAS3 boosts blast resistance by promoting nicotianamine accumulation, thereby enhancing blast resistance. Conversely, knockout of OsNAS3 increases ethylene biosynthesis, also contributing to improved blast resistance.

18.
Plant Foods Hum Nutr ; 79(2): 308-315, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38639852

RESUMEN

In food industry, the characteristics of food substrate could be improved through its bidirectional solid-state fermentation (BSF) by fungi, because the functional components were produced during BSF. Six edible fungi were selected for BSF to study their effects on highland barley properties, such as functional components, antioxidant activity, and texture characteristics. After BSF, the triterpenes content in Ganoderma lucidum and Ganoderma leucocontextum samples increased by 76.57 and 205.98%, respectively, and the flavonoids content increased by 62.40% (Phellinus igniarius). Protein content in all tests increased significantly, with a maximal increase of 406.11% (P. igniarius). Proportion of indispensable amino acids increased significantly, with the maximum increase of 28.22%. Lysine content increased largest by 437.34% to 3.310 mg/g (Flammulina velutipes). For antioxidant activity, ABTS radical scavenging activity showed the maximal improvement, with an increase of 1268.95%. Low-field NMR results indicated a changed water status of highland barley after fermentation, which could result in changes in texture characteristics of highland barley. Texture analysis showed that the hardness and chewiness of the fermented product decreased markedly especially in Ganoderma lucidum sample with a decrease of 77.96% and 58.60%, respectively. The decrease indicated a significant improvement in the taste of highland barley. The results showed that BSF is an effective technology to increase the quality of highland barley and provide a new direction for the production of functional foods.


Asunto(s)
Antioxidantes , Fermentación , Ganoderma , Hordeum , Hordeum/química , Antioxidantes/análisis , Antioxidantes/metabolismo , Ganoderma/química , Ganoderma/metabolismo , Flavonoides/análisis , Aminoácidos/análisis , Aminoácidos/metabolismo , Flammulina/química , Flammulina/metabolismo , Reishi/metabolismo , Reishi/química , Manipulación de Alimentos/métodos
19.
Zhongguo Yi Xue Ke Xue Yuan Xue Bao ; 46(5): 783-787, 2024 Oct.
Artículo en Zh | MEDLINE | ID: mdl-39502062

RESUMEN

Thyroid hormone resistance syndrome complicated with papillary thyroid cancer is clinically rare.Madelung's disease is a rare disorder of lipid metabolism.We analyzed the clinical data of a case of thyroid hormone resistance syndrome complicated with papillary thyroid carcinoma and Madelung's disease,performed whole-exon sequencing for the patient's peripheral blood samples,and retrospectively analyzed the relevant literature.This review is expected to provide experience for clinical diagnosis and treatment.


Asunto(s)
Carcinoma Papilar , Lipomatosis Simétrica Múltiple , Cáncer Papilar Tiroideo , Síndrome de Resistencia a Hormonas Tiroideas , Neoplasias de la Tiroides , Humanos , Neoplasias de la Tiroides/complicaciones , Neoplasias de la Tiroides/diagnóstico , Cáncer Papilar Tiroideo/complicaciones , Cáncer Papilar Tiroideo/diagnóstico , Síndrome de Resistencia a Hormonas Tiroideas/complicaciones , Síndrome de Resistencia a Hormonas Tiroideas/diagnóstico , Síndrome de Resistencia a Hormonas Tiroideas/genética , Carcinoma Papilar/complicaciones , Lipomatosis Simétrica Múltiple/complicaciones , Lipomatosis Simétrica Múltiple/diagnóstico , Femenino , Carcinoma/complicaciones , Adulto , Masculino , Persona de Mediana Edad
20.
Clin Immunol ; 257: 109838, 2023 12.
Artículo en Inglés | MEDLINE | ID: mdl-37935312

RESUMEN

The role of m6A in ankylosing spondylitis (AS) remains largely obscure. In this study, we found that m6A modification was decreased in T cells of AS, and the abnormal m6A modification was attributed to the downregulation of methyltransferase-like 14 (METTL14). METTL14 exerted a critical role in regulating autophagy activity and inflammation via targeting Forkhead box O3a (FOXO3a). Mechanistically, the loss of METTL14 decreased the expression of FOXO3a, leading to the damage of autophagic flux and the aggravation of inflammation. Inversely, the forced expression of METTL14 upregulated the expression of FOXO3a, thereby activating autophagy and alleviating inflammation. Furthermore, our results revealed that METTL14 targeted FOXO3a mRNA and regulated its expression and stability in a m6A-dependent manner. These findings uncovered the functional importance of m6A methylation mechanisms in the regulation of autophagy and inflammation, which expanded our understanding of this interaction and was critical for the development of therapeutic strategies for AS.


Asunto(s)
Adenina , Autofagia , Proteína Forkhead Box O3 , Inflamación , Metiltransferasas , Espondilitis Anquilosante , Humanos , Adenina/metabolismo , Autofagia/genética , Inflamación/genética , Metiltransferasas/genética , Espondilitis Anquilosante/genética , Espondilitis Anquilosante/patología , Proteína Forkhead Box O3/metabolismo
SELECCIÓN DE REFERENCIAS
Detalles de la búsqueda