Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 185
Filtrar
1.
iScience ; 27(9): 110785, 2024 Sep 20.
Artículo en Inglés | MEDLINE | ID: mdl-39286503

RESUMEN

Supernumerary teeth are common developmental anomalies of dentition. However, the factors and mechanisms driving their formation remain largely unknown. Here, we report that conditional knockout of Fst, encoding an antagonist for the transforming growth factor ß (TGF-ß) signaling pathway, in both oral epithelium and mesenchyme of mice (Fst CKO ) led to supernumerary upper incisor teeth, arising from the lingual dental epithelium of the native teeth and preceded by an enlarged and split lingual cervical loop. Fst-deficiency greatly activated TGF-ß signaling in developing maxillary incisor teeth, associated with increased epithelium cell proliferation. Moreover, Fst CKO teeth exhibited increased expression of Tbx1, Sp6, and Sox2, which were identified as direct targets of TGF-ß/SMAD2 signaling. Finally, we show that upregulation of Tbx1 in response to Fst-deficiency was largely responsible for the formation of extra teeth in Fst CKO mice. Taken together, our investigation indicates a novel role for Fst in controlling murine tooth number by restricting TGF-ß signaling.

2.
Glob Chang Biol ; 30(8): e17454, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-39132898

RESUMEN

Tropical and subtropical evergreen broadleaved forests (TEFs) contribute more than one-third of terrestrial gross primary productivity (GPP). However, the continental-scale leaf phenology-photosynthesis nexus over TEFs is still poorly understood to date. This knowledge gap hinders most light use efficiency (LUE) models from accurately simulating the GPP seasonality in TEFs. Leaf age is the crucial plant trait to link the dynamics of leaf phenology with GPP seasonality. Thus, here we incorporated the seasonal leaf area index of different leaf age cohorts into a widely used LUE model (i.e., EC-LUE) and proposed a novel leaf age-dependent LUE model (denoted as LA-LUE model). At the site level, the LA-LUE model (average R2 = .59, average root-mean-square error [RMSE] = 1.23 gC m-2 day-1) performs better than the EC-LUE model in simulating the GPP seasonality across the nine TEFs sites (average R2 = .18; average RMSE = 1.87 gC m-2 day-1). At the continental scale, the monthly GPP estimates from the LA-LUE model are consistent with FLUXCOM GPP data (R2 = .80; average RMSE = 1.74 gC m-2 day-1), and satellite-based GPP data retrieved from the global Orbiting Carbon Observatory-2 (OCO-2) based solar-induced chlorophyll fluorescence (SIF) product (GOSIF) (R2 = .64; average RMSE = 1.90 gC m-2 day-1) and the reconstructed TROPOspheric Monitoring Instrument SIF dataset using machine learning algorithms (RTSIF) (R2 = .78; average RMSE = 1.88 gC m-2 day-1). Typically, the estimated monthly GPP not only successfully represents the unimodal GPP seasonality near the Tropics of Cancer and Capricorn, but also captures well the bimodal GPP seasonality near the Equator. Overall, this study for the first time integrates the leaf age information into the satellite-based LUE model and provides a feasible implementation for mapping the continental-scale GPP seasonality over the entire TEFs.


Asunto(s)
Bosques , Hojas de la Planta , Tecnología de Sensores Remotos , Estaciones del Año , Hojas de la Planta/crecimiento & desarrollo , Fotosíntesis , Modelos Teóricos , Luz , Árboles/crecimiento & desarrollo , Modelos Biológicos , Clima Tropical
3.
Ecol Evol ; 14(7): e70040, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-39021733

RESUMEN

Mangrove sediments host a diverse array of microbial populations and are characterized by high heterogeneity along their vertical depths. However, the genetic diversity within these populations is largely unknown, hindering our understanding of their adaptive evolution across the sediment depths. To elucidate their genetic diversity, we utilized metagenome sequencing to identify 16 high-frequency microbial populations comprised of two archaea and 14 bacteria from mangrove sediment cores (0-100 cm, with 10 depths) in Qi'ao Island, China. Our analysis of the genome-wide genetic variation revealed extensive nucleotide diversity in the microbial populations. The genes involved in the transport and the energy metabolism displayed a high nucleotide diversity (HND; 0.0045-0.0195; an indicator of shared minor alleles with the microbial populations). By tracking the processes of homologous recombination, we found that each microbial population was subjected to different purification selection levels at different depths (44.12% genes). This selection resulted in significant differences in synonymous/non-synonymous mutation ratio between 0-20 and 20-100 cm layers, indicating the adaptive evolutionary process of microbial populations. Furthermore, our assessment of differentiation in the allele frequencies between these two layers showed that the functional genes involved in the metabolic processes of amino acids or cofactors were highly differential in more than half of them. Together, we showed that the nucleotide diversity of microbial populations was shaped by homologous recombination and gene-specific selection, finally resulting in the stratified differentiation occurring between 0-20 and 20-100 cm. These results enhance our cognition of the microbial adaptation mechanisms to vertical environmental changes during the sedimentation process of coastal blue carbon ecosystems.

4.
iScience ; 27(7): 110286, 2024 Jul 19.
Artículo en Inglés | MEDLINE | ID: mdl-39055952

RESUMEN

NME1 is a metastatic suppressor inconsistently reported to have multiple roles as both a promoter and inhibitor of cancer metastasis. Nevertheless, the specific mechanism behind these results is still unclear. We observed that A549 cells with stable transfer of NME1 into the nucleus (A549-nNm23-H1) exhibited significantly increased migration and invasion activity compared to vector control cells, which was further enhanced by over-expressing CYP24A1 (p < 0.001). NME1 demonstrated the ability to safely attach to and amplify the transcription activation of JUN, consequently leading to the up-regulation of CYP24A1. Analysis of clinical data showed a positive relationship between nuclear NME1 levels and CYP24A1 expression. Furthermore, they were positively associated with postoperative distant metastasis and negatively correlated with prognosis in those with early stage lung adenocarcinoma. In conclusion, the data presented provides a new understanding of the probable pathways by which nuclear NME1 facilitates tumor metastasis, establishing the groundwork for future prediction and treatment of tumor metastasis.

5.
Animals (Basel) ; 14(14)2024 Jul 09.
Artículo en Inglés | MEDLINE | ID: mdl-39061491

RESUMEN

Muscle development is a multifaceted process influenced by numerous genes and regulatory networks. Currently, the regulatory network of chicken muscle development remains incompletely elucidated, and its molecular genetic mechanisms require further investigation. The Longsheng-Feng chicken, one of the elite local breeds in Guangxi, serves as an excellent resource for the selection and breeding of high-quality broiler chickens. In this study, we conducted transcriptome sequencing of the pectoral muscles of Longsheng-Feng chickens and AA broiler chickens with different growth rates. Through comprehensive bioinformatics analysis, we identified differentially expressed genes that affect muscle growth and showed that IGF2BP1 is a key participant in chicken muscle development. Subsequently, we employed QRT-PCR, EdU staining, and flow cytometry to further investigate the role of IGF2BP1 in the proliferation and differentiation of chicken myogenic cells. We identified 1143 differentially expressed genes, among which IGF2BP1 is intimately related to the muscle development process and is highly expressed in muscle tissues. Overexpression of IGF2BP1 significantly promotes the proliferation and differentiation of chicken primary myoblasts, while knockdown of IGF2BP1 significantly inhibits these processes. In summary, these results provide valuable preliminary insights into the regulatory roles of IGF2BP1 in chicken growth and development.

6.
Genes (Basel) ; 15(7)2024 Jun 26.
Artículo en Inglés | MEDLINE | ID: mdl-39062616

RESUMEN

As an important mechanism in the post-transcriptional regulation of eukaryotic gene expression, alternative polyadenylation (APA) plays a key role in biological processes such as cell proliferation and differentiation. However, the role and dynamic pattern of APA during Litopenaeus vannamei metamorphosis are poorly understood. Here, RNA-seq data covering from the embryo to the maturation (16 time points) of L. vannamei were utilized. We identified 247 differentially expressed APA events between early and adult stages, and through fuzzy mean clustering analysis, we discovered five dynamic APA patterns. Among them, the gradual elongation of the 3'UTR is the major APA pattern that changes over time, and its genes are enriched in the pathways of protein and energy metabolism. Finally, we constructed mRNA-miRNA and PPI networks and detected several central miRNAs that may regulate L. vannamei development. Our results revealed the complex APA mechanisms in L. vannamei metamorphosis, shedding new light on post-transcriptional regulation of crustacean metamorphosis.


Asunto(s)
Regiones no Traducidas 3' , Regulación del Desarrollo de la Expresión Génica , Metamorfosis Biológica , Penaeidae , Poliadenilación , Animales , Metamorfosis Biológica/genética , Penaeidae/genética , Penaeidae/crecimiento & desarrollo , Poliadenilación/genética , Regiones no Traducidas 3'/genética , MicroARNs/genética , ARN Mensajero/genética , ARN Mensajero/metabolismo
7.
Expert Opin Drug Saf ; : 1-14, 2024 Aug 05.
Artículo en Inglés | MEDLINE | ID: mdl-39082071

RESUMEN

OBJECTIVE: The purpose of this study was to evaluate the pharmacovigilance and clinical characteristics of psychiatric adverse events(AEs) related to Fluoroquinolones(FQs), and to determine the risk factors for timely management. METHODS: Data about AE reporting comes from the FDA Adverse Event Reporting System (FAERS) database, which was used for pharmacovigilance assessments. In addition, we also analyzed the cases of psychiatric AEs related to FQs retrospectively. RESULTS: Both of the FAERS database analysis and literature reports show that the proportion of FQs-related psychiatric AEs reported in females were higher (51.11% VS 33.44% and 53.23% VS 46.77%). Both of them show that the proportion of psychiatric AEs caused by FQs was higher in the age groups of 19-44 (28.08% and 40.32%) and 45-64 (28.17% and 25.81%). Most psychiatric AEs occurred within 10 days after FQs administration. Literature shows that 67.74% of the psychiatric AEs disappeared within 3 days after drug withdrawal (some cases were accompanied by other drug). CONCLUSION: Psychiatric AEs caused by FQs are serious, and there are many important safety signals that have not been mentioned in the label or previous studies. It is very important to identify and manage psychiatric AEs in time for the safe use of FQs.

8.
J Colloid Interface Sci ; 675: 815-824, 2024 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-39002232

RESUMEN

Oxygen vacancy engineering in transition metal oxides is an effective strategy for improving catalytic performance. Herein, defect-enriched Mn2O3 catalysts were constructed by controlling the calcination temperature. The high content of oxygen vacancies and accompanying Mn4+ ions were generated in Mn2O3 catalysts calcined at low temperature, which could greatly improve the low-temperature reducibility and migration of surface oxygen species. DFT theoretical calculations further confirmed that molecular oxygen and toluene were easily adsorbed over defective α-Mn2O3 (222) facets with an energy of -0.29 and -0.48 eV, respectively, and corresponding OO bond length is stretched to 1.43 Å, resulting in the highly reactive oxygen species. Mn2O3-300 catalyst with abundant oxygen vacancies exhibited the highest specific reaction rate and lowest activation energy. Furthermore, the optimized catalyst possessed the outstanding stability, water tolerance and CO2 yield. In comparison with the fresh Mn2O3-300 catalyst, the physical structure and surface property of the used catalyst remained almost unchanged regardless of whether undergoing the stability test at consecutive catalytic runs as well as high temperature, and water resistance test. In situ DRIFTS spectra further elucidated that introducing the water vapor had little effect on the reaction intermediates, indicating the excellent durability of the defect-enriched catalyst.

9.
Angew Chem Int Ed Engl ; 63(29): e202404142, 2024 07 15.
Artículo en Inglés | MEDLINE | ID: mdl-38715431

RESUMEN

Fluorescent imaging and biosensing in the near-infrared-II (NIR-II) window holds great promise for non-invasive, radiation-free, and rapid-response clinical diagnosis. However, it's still challenging to develop bright NIR-II fluorophores. In this study, we report a new strategy to enhance the brightness of NIR-II aggregation-induced emission (AIE) fluorophores through intramolecular electrostatic locking. By introducing sulfur atoms into the side chains of the thiophene bridge in TSEH molecule, the molecular motion of the conjugated backbone can be locked through intramolecular interactions between the sulfur and nitrogen atoms. This leads to enhanced NIR-II fluorescent emission of TSEH in both solution and aggregation states. Notably, the encapsulated nanoparticles (NPs) of TSEH show enhanced brightness, which is 2.6-fold higher than TEH NPs with alkyl side chains. The in vivo experiments reveal the feasibility of TSEH NPs in vascular and tumor imaging with a high signal-to-background ratio and precise resection for tiny tumors. In addition, polystyrene nanospheres encapsulated with TSEH are utilized for antigen detection in lateral flow assays, showing a signal-to-noise ratio 1.9-fold higher than the TEH counterpart in detecting low-concentration antigens. This work highlights the potential for developing bright NIR-II fluorophores through intramolecular electrostatic locking and their potential applications in clinical diagnosis and biomedical research.


Asunto(s)
Colorantes Fluorescentes , Rayos Infrarrojos , Imagen Óptica , Electricidad Estática , Colorantes Fluorescentes/química , Humanos , Nanopartículas/química , Tiofenos/química , Animales , Ratones , Estructura Molecular
10.
Neoplasia ; 53: 101006, 2024 07.
Artículo en Inglés | MEDLINE | ID: mdl-38761505

RESUMEN

BACKGROUND: Tyrosine kinase inhibitors (TKIs) are standard first-line treatments for advanced non-small-cell lung cancer (NSCLC) with driver gene mutations. The Response Evaluation Criteria in Solid Tumors (RECIST) are limited in predicting long-term patient benefits. A tumour marker-based evaluation criteria, RecistTM, was used to investigate the potential for assessing targeted-therapy efficacy in lung cancer treatment. METHODS: We retrospectively analysed patients with stage IIIA-IV NSCLC and driver gene mutations, whose baseline tumour marker levels exceeded the pre-treatment cut-off value three-fold and who received TKI-targeted therapy as a first-line treatment. We compared efficacy, progression-free survival (PFS), and overall survival (OS) between RecistTM and RECIST. FINDINGS: The median PFS and OS differed significantly among treatment-response subgroups based on RecistTM but not RECIST. The predicted 1-, 2-, and 3-year disease-progression risk, according to area under the receiver operating characteristic curve, as well as the 1-, 3-, and 5-year mortality risk, differed significantly between RecistTM and RECIST. The median PFS and OS of tmCR according to RecistTM, was significantly longer than (CR+PR) according to RECIST. Imaging analysis revealed that the ΔPFS was 11.27 and 6.17 months in the intervention and non-intervention groups, respectively, suggesting that earlier intervention could extend patients' PFS. INTERPRETATION: RecistTM can assess targeted-therapy efficacy in patients with advanced NSCLC and driver gene mutations, along with tumour marker abnormalities. RecistTM surpasses RECIST in predicting short- and long-term patient benefits, and allows the early identification of patients resistant to targeted drugs, enabling prompt intervention and extending the imaging-demonstrated time to progression.


Asunto(s)
Biomarcadores de Tumor , Carcinoma de Pulmón de Células no Pequeñas , Neoplasias Pulmonares , Terapia Molecular Dirigida , Mutación , Estadificación de Neoplasias , Criterios de Evaluación de Respuesta en Tumores Sólidos , Humanos , Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Carcinoma de Pulmón de Células no Pequeñas/genética , Carcinoma de Pulmón de Células no Pequeñas/patología , Carcinoma de Pulmón de Células no Pequeñas/mortalidad , Neoplasias Pulmonares/tratamiento farmacológico , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/patología , Neoplasias Pulmonares/mortalidad , Femenino , Biomarcadores de Tumor/genética , Masculino , Persona de Mediana Edad , Anciano , Terapia Molecular Dirigida/métodos , Estudios Retrospectivos , Adulto , Inhibidores de Proteínas Quinasas/uso terapéutico , Anciano de 80 o más Años , Resultado del Tratamiento , Pronóstico
11.
Front Microbiol ; 15: 1355859, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38716172

RESUMEN

Increasing nitrogen (N) input to coastal ecosystems poses a serious environmental threat. It is important to understand the responses and feedback of N removal microbial communities, particularly nitrifiers including the newly recognized complete ammonia-oxidizers (comammox), to improve aquaculture sustainability. In this study, we conducted a holistic evaluation of the functional communities responsible for nitrification by quantifying and sequencing the key functional genes of comammox Nitrospira-amoA, AOA-amoA, AOB-amoA and Nitrospira-nxrB in fish ponds with different fish feeding levels and evaluated the contribution of nitrifiers in the nitrification process through experiments of mixing pure cultures. We found that higher fish feeding dramatically increased N-related concentration, affecting the nitrifying communities. Compared to AOA and AOB, comammox Nitrospira and NOB were more sensitive to environmental changes. Unexpectedly, we detected an equivalent abundance of comammox Nitrospira and AOB and observed an increase in the proportion of clade A in comammox Nitrospira with the increase in fish feeding. Furthermore, a simplified network and shift of keystone species from NOB to comammox Nitrospira were observed in higher fish-feeding ponds. Random forest analysis suggested that the comammox Nitrospira community played a critical role in the nitrification of eutrophic aquaculture ponds (40-70 µM). Through the additional experiment of mixing nitrifying pure cultures, we found that comammox Nitrospira is the primary contributor to the nitrification process at 200 µM ammonium. These results advance our understanding of nitrifying communities and highlight the importance of comammox Nitrospira in driving nitrification in eutrophic aquaculture systems.

12.
Medicine (Baltimore) ; 103(21): e38155, 2024 May 24.
Artículo en Inglés | MEDLINE | ID: mdl-38787974

RESUMEN

BACKGROUND: Numerous studies have demonstrated that psychological interventions are effective in alleviating anxiety and depression in patients with cancer. However, the optimal psychological intervention to alleviate anxiety and depression in patients with cancer remains unknown. This study was carried out to compare and rank the comparative effectiveness of various psychological interventions on anxiety and depression in patients with cancer. METHODS: Databases, namely PubMed, Embase, Cochrane Library, Web of Science, PsycINFO, CNKI, WanFang, VIP and CBM were systematically searched from their inception dates to December 2023 for randomized controlled trials of psychological interventions for anxiety and depression in patients with cancer. Utilizing the Cochrane Review Manager 5.4, we evaluated the risk of bias in the studies included in the current study based on the Cochrane Handbook 5.1.0 Methodological Quality Evaluation Criteria. The NMA was conducted using STATA 15.0. This study did not involve human participants and therefore did not require ethical approval. RESULTS: Thirty-one randomized controlled trials involving 3471 participants were included. MT [SMD = 1.35, 95% CI (0.76, 1.93)] and cognitive behavioral therapy (CBT) [SMD = 0.97, 95% CI (0.53, 1.42)] were superior to usual care in alleviating anxiety. Besides, interpersonal psychotherapy (IPT) [SMD = 1.17, 95% CI (0.06, 2.28)], CBT [SMD = 0.97, 95 % CI (0.63, 1.30)], and MT [SMD = 0.93, 95% CI (0.35, 1.50)] were superior to usual care in alleviating depression. In addition, CBT was superior to family therapy in alleviating depression [SMD = 0.73, 95% CI (0.08, 1.38)]. The MT, CBT, and IPT ranked in the top three in alleviating anxiety, while IPT, CBT, and MT ranked in the top three in alleviating depression. CONCLUSION: MT and IPT would be a more appropriate option in alleviating anxiety and depression in patients with cancer, respectively. This study also suggested that CBT had a significant effect in alleviating negative emotions in patients with cancer. However, the results need to be validated by high-quality and large-sample studies.


Asunto(s)
Ansiedad , Depresión , Neoplasias , Metaanálisis en Red , Humanos , Neoplasias/psicología , Neoplasias/complicaciones , Neoplasias/terapia , Depresión/terapia , Depresión/etiología , Depresión/psicología , Ansiedad/terapia , Ansiedad/etiología , Terapia Cognitivo-Conductual/métodos , Psicoterapia/métodos , Ensayos Clínicos Controlados Aleatorios como Asunto , Intervención Psicosocial/métodos , Resultado del Tratamiento
13.
Adv Mater ; 36(28): e2402182, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38663035

RESUMEN

Photosensitizers (PSs) with aggregation-induced emission (AIE) characteristics are competitive candidates for bioimaging and therapeutic applications. However, their short emission wavelength and nonspecific organelle targeting hinder their therapeutic effectiveness. Herein, a donor-acceptor modulation approach is reported to construct a series of ionic AIE photosensitizers with enhanced photodynamic therapy (PDT) outcomes and fluorescent emission in the second near-infrared (NIR-II) window. By employing dithieno[3,2-b:2',3'-d]pyrrole (DTP) and indolium (In) as the strong donor and acceptor, respectively, the compound DTP-In exhibits a substantial redshift in absorption and fluorescent emission reach to NIR-II region. The reduced energy gap between singlet and triplet states in DTP-In also increases the reactive oxygen species (ROS) generation rate. Further, DTP-In can self-assemble in aqueous solutions, forming positively charged nanoaggregates, which are superior to conventional encapsulated nanoparticles in cellular uptake and mitochondrial targeting. Consequently, DTP-In aggregates show efficient photodynamic ablation of 4T1 cancer cells and outstanding tumor theranostic in vivo under 660 nm laser irradiation. This work highlights the potential of molecular engineering of donor-acceptor AIE PSs with multiple functionalities, thereby facilitating the development of more effective strategies for cancer therapy.


Asunto(s)
Rayos Infrarrojos , Fotoquimioterapia , Fármacos Fotosensibilizantes , Especies Reactivas de Oxígeno , Fármacos Fotosensibilizantes/química , Fármacos Fotosensibilizantes/farmacología , Especies Reactivas de Oxígeno/metabolismo , Fotoquimioterapia/métodos , Animales , Ratones , Línea Celular Tumoral , Humanos , Indoles/química , Indoles/farmacología , Nanopartículas/química , Pirroles/química , Pirroles/farmacología
14.
Rev. int. med. cienc. act. fis. deporte ; 24(95): 1-15, mar.-2024. ilus, graf, tab
Artículo en Inglés | IBECS | ID: ibc-ADZ-326

RESUMEN

Artificial intelligence (AI) has advanced from a theoretical concept to a practical application thanks to the quick development of computer science and information technology. AI, a fundamental component of contemporary civilization, has a growing impact on all facets of daily life, including sports training. Artificial intelligence (AI) can be viewed as a supporting technology that specifically supports athletes' physical education training through methods like data analysis and simulation of training scenarios. Even though research on AI is still in its early stages, it is important to investigate how it may be used in sports training becausethis cutting-edge technology could in some ways make it easier for individuals to train physically. This study begins by reviewing the prior work on AI applications.In, this study investigates three specific situations of AI application in sports training and describes the key concepts based on the core idea and related research findings of AI. This study focuses on the close connection between artificial intelligence (AI) and physical education instruction and emphasises the benefits of AI, such as its use, ease, and innovation. This study creates the appropriate information data interface mode based on the integration of the sports tourist sector and the culture industry. (AU)


Asunto(s)
Inteligencia Artificial , 51675 , Deportes , Informática , Tecnología
15.
Sci Total Environ ; 923: 171395, 2024 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-38447730

RESUMEN

Ammonia-oxidizing microorganisms, including AOA (ammonia-oxidizing archaea), AOB (ammonia-oxidizing bacteria), and Comammox (complete ammonia oxidization) Nitrospira, have been reported to possess the capability for the biotransformation of sulfonamide antibiotics. However, given that nitrifying microorganisms coexist and operate as communities in the nitrification process, it is surprising that there is a scarcity of studies investigating how their interactions would affect the biotransformation of sulfonamide antibiotics. This study aims to investigate the sulfamonomethoxine (SMM) removal efficiency and mechanisms among pure cultures of phylogenetically distinct nitrifiers and their combinations. Our findings revealed that AOA demonstrated the highest SMM removal efficiency and rate among the pure cultures, followed by Comammox Nitrospira, NOB, and AOB. However, the biotransformation of SMM by AOA N. gargensis is reversible, and the removal efficiency significantly decreased from 63.84 % at 167 h to 26.41 % at 807 h. On the contrary, the co-culture of AOA and NOB demonstrated enhanced and irreversible SMM removal efficiency compared to AOA alone. Furthermore, the presence of NOB altered the SMM biotransformation of AOA by metabolizing TP202 differently, possibly resulting from reduced nitrite accumulation. This study offers novel insights into the potential application of nitrifying communities for the removal of sulfonamide antibiotics (SAs) in engineered ecosystems.


Asunto(s)
Sulfamonometoxina , Sulfamonometoxina/metabolismo , Amoníaco/metabolismo , Ecosistema , Microbiología del Suelo , Oxidación-Reducción , Filogenia , Bacterias/metabolismo , Archaea/metabolismo , Nitrificación , Biotransformación , Antibacterianos/metabolismo , Sulfanilamida/metabolismo
16.
Expert Opin Drug Saf ; 23(4): 513-525, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38533933

RESUMEN

OBJECTIVE: The purpose of this study aimed to explore the new and serious adverse events(AEs) of Tacrolimus(FK506), cyclosporine(CsA), azathioprine(AZA), mycophenolate mofetil(MMF), cyclophosphamide(CTX) and methotrexate(MTX), which have not been concerned. METHODS: The FAERS data from January 2016 and December 2022 were selected for disproportionality analysis to discover the potential risks of traditional immunosuppressive drugs. RESULTS: Compared with CsA, FK506 has more frequent transplant rejection, and is more related to renal impairment, COVID-19, cytomegalovirus infection and aspergillus infection. However, CsA has a high infection-related fatality rate. In addition, we also found some serious and rare AE in other drugs which were rarely reported in previous studies. For example, AZA is closely related to hepatosplenic T-cell lymphoma with high fatality rate and MTX is strongly related to hypofibrinogenemia. CONCLUSION: The AEs report on this study confirmed that the results were basically consistent with the previous studies, but there were also some important safety signals that were inconsistent with or not mentioned in previous published studies. EXPERT OPINION: The opinion section discusses some of the limitations and shortcomings, proposing the areas where more effort should be invested in order to improve the safety of immunosuppressive drugs.


Asunto(s)
Trasplante de Riñón , Tacrolimus , Humanos , Tacrolimus/efectos adversos , Farmacovigilancia , Inmunosupresores/efectos adversos , Ciclosporina/efectos adversos , Ácido Micofenólico , Metotrexato , Minería de Datos , Rechazo de Injerto
17.
J Am Chem Soc ; 146(7): 4851-4863, 2024 02 21.
Artículo en Inglés | MEDLINE | ID: mdl-38346857

RESUMEN

The abnormal evolution of membrane-less organelles into amyloid fibrils is a causative factor in many neurodegenerative diseases. Fundamental research on evolving organic aggregates is thus instructive for understanding the root causes of these diseases. In-situ monitoring of evolving molecular aggregates with built-in fluorescence properties is a reliable approach to reflect their subtle structural variation. To increase the sensitivity of real-time monitoring, we presented organic aggregates assembled by TPAN-2MeO, which is a triphenyl acrylonitrile derivative. TPAN-2MeO showed a morphological evolution with distinct turn-on emission. Upon rapid nanoaggregation, it formed non-emissive spherical aggregates in the kinetically metastable state. Experimental and simulation results revealed that the weak homotypic interactions between the TPAN-2MeO molecules liberated their molecular motion for efficient non-radiative decay, and the strong heterotypic interactions between TPAN-2MeO and water stabilized the molecular geometry favorable for the non-fluorescent state. After ultrasonication, the decreased heterotypic interactions and increased homotypic interactions acted synergistically to allow access to the emissive thermodynamic equilibrium state with a decent photoluminescence quantum yield (PLQY). The spherical aggregates were eventually transformed into micrometer-sized blocklike particles. Under mechanical stirring, the co-assembly of TPAN-2MeO and Pluronic F-127 formed uniform fluorescent platelets, inducing a significant enhancement in PLQY. These results decipher the stimuli-triggered structural variation of organic aggregates with concurrent sensitive fluorescence response and pave the way for a deep understanding of the evolutionary events of biogenic aggregates.


Asunto(s)
Amiloide , Agua , Fluorescencia
18.
BMC Genomics ; 25(1): 57, 2024 Jan 13.
Artículo en Inglés | MEDLINE | ID: mdl-38216873

RESUMEN

BACKGROUND: The disease caused by Riemerella anatipestifer (R. anatipestifer, RA) results in large economic losses to the global duck industry every year. Serovar-related genomic variation, such as the O-antigen and capsular polysaccharide (CPS) gene clusters, has been widely used for serotyping in many gram-negative bacteria. RA has been classified into at least 21 serovars based on slide agglutination, but the molecular basis of serotyping is unknown. In this study, we performed a pan-genome-wide association study (Pan-GWAS) to identify the genetic loci associated with RA serovars. RESULTS: The results revealed a significant association between the putative CPS synthesis gene locus and the serological phenotype. Further characterization of the CPS gene clusters in 11 representative serovar strains indicated that they were highly diverse and serovar-specific. The CPS gene cluster contained the key genes wzx and wzy, which are involved in the Wzx/Wzy-dependent pathway of CPS synthesis. Similar CPS loci have been found in some other species within the family Weeksellaceae. We have also shown that deletion of the wzy gene in RA results in capsular defects and cross-agglutination. CONCLUSIONS: This study indicates that the CPS synthesis gene cluster of R. anatipestifer is a serotype-specific genetic locus. Importantly, our finding provides a new perspective for the systematic analysis of the genetic basis of the R anatipestifer serovars and a potential target for establishing a complete molecular serotyping scheme.


Asunto(s)
Enfermedades de las Aves de Corral , Riemerella , Animales , Serogrupo , Estudio de Asociación del Genoma Completo , Riemerella/genética , Patos/genética , Patos/microbiología , Enfermedades de las Aves de Corral/microbiología
19.
Nurs Open ; 11(1): e2051, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38268281

RESUMEN

AIM: To systematically review and synthesize the findings of qualitative research on the unmet rehabilitation needs of colorectal cancer survivors (CRC) after surgery. DESIGN: A qualitative meta-synthesis registered with PROSPERO (CRD42022368837). METHODS: CNKI, Wanfang Data, PubMed, Scopus, Embase, Cochrane, Medline, PsychINFO and CINAHL were systematically searched for qualitative studies on the rehabilitation needs of CRC survivors after surgery from the inception of each database to September 2022. RESULTS: A total of 917 relevant reports were initially collected and 14 studies were finally included. A total of 49 needs were extracted and divided into 15 categories in 6 integrated findings: (1) the need to adopt healthy eating habits; (2) the need for exercise motivation and exercise guidance; (3) the conflicting needs to return to work; (4) unaddressed physiological needs; (5) spiritual needs; (6) the need for multi-dimensional social support. PATIENT OR PUBLIC CONTRIBUTION: Not applicable.


Asunto(s)
Supervivientes de Cáncer , Neoplasias Colorrectales , Humanos , Neoplasias Colorrectales/cirugía
20.
Small ; 20(6): e2306828, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37789504

RESUMEN

In this work, high-performance epoxy resin (EP) composites with simultaneous excellent thermal conductivity (TC) and outstanding electromagnetic shielding properties are fabricated through the structural synergy of 1D carbon nanotubes and 2D silver-modified boron nitride nanoplates (CNT/AgBNs) to erect microscopic 3D networks on long-range carbon fiber (CF) felt skeletons. The line-plane combination of CNT/AgBNs improve the interfacical bonding involving EP and CF felts and alleviate the phonon scattering at the interface. Eventually, the TC of the EP composites is enhanced by 333% (up to 0.91 W m-1 K-1 ) with respect to EP due to the efficient and orderly transmission of phonons along the 3D pathway. Meanwhile, the unique anisotropic structure of CF felt and exceptional insulating BNs diminishes the electronic conduction between CNT and CFs, which protects the through-plane insulating properties of EP composites. Furthermore, the EP composites present favorable electromagnetic shielding properties (51.36 dB) attributed to the multiple reflection and adsorption promoted by the multiple interfaces of stacked AgBNs and heterointerface among CNT/AgBNs, CF felt and EP. Given these distinguishing features, the high-performance EP composites open a convenient avenue for electromagnetic wave (EMW) shielding and thermal management applications.

SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA