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1.
Artículo en Inglés | MEDLINE | ID: mdl-39302498

RESUMEN

This research examines parental practices of Israeli highly sensitive mothers toward their adolescent children and the role of attachment avoidance as a moderator between the associations of high sensitivity and parenting practices. One hundred and one mother-adolescent dyads completed self-report questionnaires assessing mothers' degree of high sensitivity, mothers' adult attachment, and mothers' parenting practices. Results showed that highly sensitive mothers were described by their adolescent children as inconsistent and intrusive parents. Further, attachment avoidance was found to moderate the association between mothers' high sensitivity and inconsistent and psychological intrusiveness. Findings suggest that attachment avoidant highly sensitive mothers experience this period of raising adolescents as especially stressful and challenging, which contributes to the practice of negative parenting. Thus, interventions focused on regulating those mothers' emotions to better cope with parental challenges could buffer negative parenting practices.

2.
Cancer Sci ; 2024 Aug 18.
Artículo en Inglés | MEDLINE | ID: mdl-39155534

RESUMEN

The activation of yes-associated protein 1 (YAP1) and transcriptional co-activator with PDZ-binding motif (TAZ) has been implicated in both regeneration and tumorigenesis, thus representing a double-edged sword in tissue homeostasis. However, how the activity of YAP1/TAZ is regulated or what leads to its dysregulation in these processes remains unknown. To explore the upstream stimuli modulating the cellular activity of YAP1/TAZ, we developed a highly sensitive YAP1/TAZ/TEAD-responsive DNA element (YRE) and incorporated it into a lentivirus-based reporter cell system to allow for sensitive and specific monitoring of the endogenous activity of YAP1/TAZ in terms of luciferase activity in vitro and Venus fluorescence in vivo. Furthermore, by replacing YRE with TCF- and NF-κB-binding DNA elements, we demonstrated the applicability of this reporter system to other pathways such as Wnt/ß-catenin/TCF- and IL-1ß/NF-κB-mediated signaling, respectively. The practicality of this system was evaluated by performing cell-based reporter screening of a chemical compound library consisting of 364 known inhibitors, using reporter-introduced cells capable of quantifying YAP1/TAZ- and ß-catenin-mediated transcription activities, which led to the identification of multiple inhibitors, including previously known as well as novel modulators of these signaling pathways. We further confirmed that novel YAP1/TAZ modulators, such as potassium ionophores, Janus kinase inhibitors, platelet-derived growth factor receptor inhibitors, and genotoxic stress inducers, alter the protein level or phosphorylation of endogenous YAP1/TAZ and the expression of their target genes. Thus, this reporter system provides a powerful tool to monitor endogenous signaling activities of interest (even in living cells) and search for modulators in various cellular contexts.

3.
Adv Mater ; : e2404656, 2024 Aug 19.
Artículo en Inglés | MEDLINE | ID: mdl-39155814

RESUMEN

Sensitive, flexible, and low false alarm rate X-ray detector is crucial for medical diagnosis, industrial inspection, and scientific research. However, most semiconductors for X-ray detectors are susceptible to interference from ambient light, and their high thickness hinders their application in wearable electronics. Herein, a flexible visible-blind and ultraviolet-blind X-ray detector based on Indium-doped Gallium oxide (Ga2O3:In) single microwire is prepared. Joint experiment-theory characterizations reveal that the Ga2O3:In microwire possess a high crystal quality, large band gap, and satisfactory stability, and reliability. On this basis, an extraordinary sensitivity of 5.9 × 105 µC Gyair -1 cm-2 and a low detection limit of 67.4 nGyair s-1 are achieved based on the prepared Ag/Ga2O3:In/Ag device, which has outstanding operation stability and excellent high temperature stability. Taking advantage of the flexible properties of the single microwire, a portable X-ray detection system is demonstrated that shows the potential to adapt to flexible and lightweight formats. The proposed X-ray detection system enables real-time monitor for X-rays, which can be displayed on the user interface. More importantly, it has excellent resistance to natural light interference, showing a low false alarm rate. This work provides a feasible method for exploring high-performance flexible integrated micro/nano X-ray detection devices.

4.
Biosens Bioelectron ; 264: 116665, 2024 Nov 15.
Artículo en Inglés | MEDLINE | ID: mdl-39173336

RESUMEN

Surface-enhanced Raman Scattering (SERS) has become a powerful spectroscopic technology for highly sensitive detection. However, SERS is still limited in the lab because it either requires complicated preparation or is limited to specific compounds, causing poor applicability for practical applications. Herein, a micro-macro SERS strategy, synergizing polymer-assisted printed process with paper-tip enrichment process, is proposed to fabricate highly sensitive paper cartridges for sensitive practical applications. The polymer-assisted printed process finely aggregates nanoparticles with a discrete degree of 1.77, and SERS results are matched with theoretical enhancement, indicating small cluster-dominated hotspots at the micro-scale and thus 41-fold SERS increase compared to other aggregation methods. The paper-tip enrichment process moves molecules in a fluid into small tips filled with plasmonic clusters, and molecular localization at hotspots is achieved by the simulation and optimization of fluidic velocity at the macro-scale, generating a 39.5-fold SERS sensibility increase in comparison with other flow methods. A highly sensitive paper cartridge contains a paper-tip and a 3D-printed cartridge, which is simple, easy-to-operate, and costs around 2 US dollars. With a detection limit of 10 -12 M for probe molecules, the application of real samples and multiple analytes achieves single-molecule level sensitivity and reliable repeatability with a 30-min standardized procedure. The micro-macro SERS strategy demonstrates its potential in practical applications that require point-of-care detection.


Asunto(s)
Técnicas Biosensibles , Límite de Detección , Nanopartículas del Metal , Papel , Espectrometría Raman , Espectrometría Raman/métodos , Técnicas Biosensibles/métodos , Técnicas Biosensibles/instrumentación , Nanopartículas del Metal/química , Diseño de Equipo , Polímeros/química , Oro/química , Impresión Tridimensional
5.
Talanta ; 280: 126758, 2024 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-39180877

RESUMEN

DNA walkers have emerged as a powerful tool in various biosensors, enabling the detection of low-abundance analytes with their precise programmability and efficient signal amplification capacity. However, many existing approaches are hampered by limited reaction kinetics. Herein, we designed a stochastic bipedal dual-DNA walkers (SBDW) that can traverse at high speed on AuNP-based three-dimensional (3D) tracks powered by Exo III. The SBDW exhibited superior reaction kinetics and are up to least 2.25 times faster than traditional DNA walkers, reaching a plateau within 40 min. This advancement allows for rapid and highly sensitive fluorescence detection of a significant base excision repair enzyme of APE1 with a detection limit of 0.001 U/mL. In comparison to traditional DNA walkers, this platform enables highly sensitive and specific APE1 assays in cell lysate and facilitates rapid and accurate screening of APE1 inhibitors. Given its rapid, sensitive, specific, and reliable analysis features, the strategy shows great promise in drug discovery and clinical diagnosis.


Asunto(s)
ADN-(Sitio Apurínico o Apirimidínico) Liasa , ADN , Inhibidores Enzimáticos , Procesos Estocásticos , ADN-(Sitio Apurínico o Apirimidínico) Liasa/antagonistas & inhibidores , ADN-(Sitio Apurínico o Apirimidínico) Liasa/metabolismo , Humanos , ADN/química , ADN/análisis , Inhibidores Enzimáticos/química , Inhibidores Enzimáticos/farmacología , Técnicas Biosensibles/métodos , Oro/química , Límite de Detección , Nanopartículas del Metal/química , Exodesoxirribonucleasas/química , Exodesoxirribonucleasas/metabolismo , Cinética
6.
Front Microbiol ; 15: 1382056, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38873139

RESUMEN

The role of Real-Time PCR assays for surveillance and rapid screening for pathogens is garnering more and more attention because of its versatility and ease of adoption. The goal of this study was to design, test, and evaluate Real-Time TaqMan PCR assays for the detection of botulinum neurotoxin (bont/A-G) genes from currently recognized BoNT subtypes. Assays were computationally designed and then laboratory tested for sensitivity and specificity using DNA preparations containing bont genes from 82 target toxin subtypes, including nine bivalent toxin types; 31 strains representing other clostridial species; and an extensive panel that consisted of DNA from a diverse set of prokaryotic (bacterial) and eukaryotic (fungal, protozoan, plant, and animal) species. In addition to laboratory testing, the assays were computationally evaluated using in silico analysis for their ability to detect bont gene sequences from recently identified toxin subtypes. Seventeen specific assays (two for each of the bont/C, bont/D, bont/E, and bont/G subtypes and three for each of the bont/A, bont/B, and bont/F subtypes) were designed and evaluated for their ability to detect bont genes encoding multiple subtypes from all seven serotypes. These assays could provide an additional tool for the detection of botulinum neurotoxins in clinical, environmental and food samples that can complement other existing methods used in clinical diagnostics, regulatory, public health, and research laboratories.

7.
Artículo en Inglés | MEDLINE | ID: mdl-38838078

RESUMEN

There is emerging empirical evidence indicating that differences in self-reported sensory processing may be associated with differences in levels of stress in the adult populations. Understanding how sensory processing relates to stress is of clinical relevance, given the well-established impact of stress on physical health, mental health and well-being. Although several studies have examined the association between sensory processing and stress in adult populations, no published reviews have systematically summarised and synthesised these findings. We aimed to fill this gap by conducting a systematic review to synthesise the available evidence examining the association between self-reported sensory processing and self-reported measures of stress in the adult population. The review was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA-S) checklist. Twenty studies were included in the final review. Quality assessment was conducted with the Mixed Methods Appraisal Tool. Overall, the evidence is strong for an association between differences in sensory processing and self-reported stress in adults. This association was found across a range of populations and measures of stress, in cross-sectional studies. The most commonly used measure of sensory processing was the Highly Sensitive Person Scale, which was consistently moderately associated with a range of measures of stress. The quality of the included studies was generally good, with most meeting four or five out of five criteria. Longitudinal studies are lacking. There is strong evidence for a cross-sectional association between sensory processing and stress in an adult population. Further research, in particular longitudinal studies and studies including clinical populations, would be of benefit in order to establish causality.

8.
J Clin Microbiol ; 62(6): e0060024, 2024 Jun 12.
Artículo en Inglés | MEDLINE | ID: mdl-38785448

RESUMEN

The COVID-19 pandemic highlighted the necessity of fast, sensitive, and efficient methods to test large populations for respiratory viruses. The "gold standard" molecular assays for detecting respiratory viruses, such as quantitative polymerase chain reaction (qPCR) and reverse transcription qPCR (RT-qPCR), rely on invasive swab samples and require time-consuming and labor-intensive extraction processes. Moreover, the turnaround time for RT-qPCR-based assays is too lengthy for rapid screening. Extraction-free saliva-based methods provide a non-invasive sampling process with a fast turnaround time and are suitable for high-throughput applications. However, when used with a standard RT-qPCR system, the absence of extraction significantly reduces the assays' sensitivity. Here, using a novel optical modulation biosensing (OMB) platform, we developed a rapid and highly sensitive extraction-free saliva-based molecular assay. We blindly tested 364 paired nasopharyngeal swabs and saliva samples from suspected SARS-CoV-2 cases in Israel. Compared with the gold standard swab-based RT-qPCR assay, the sensitivity of the extraction-free saliva-based OMB assay is 90.7%, much higher than the sensitivity of extraction-free saliva-based RT-qPCR assay (77.8%) with similar specificity (95.3% and 97.6%, respectively). Moreover, out of 12 samples identified by the OMB-based assay as positive, 8 samples were collected from hospitalized patients in a COVID-19 ward and were verified to be SARS-CoV-2-positive upon admission, indicating that the actual clinical sensitivity and specificity of the OMB assay are higher. Considering its user-friendly saliva-based protocol, short and cost-effective extraction-free process, and high clinical accuracy, the OMB-based molecular assay is very suitable for high-throughput testing of large populations for respiratory viruses. IMPORTANCE: Three years after the SARS-CoV-2 outbreak, there are no molecular tests that combine low-cost and straightforward sample preparation, effective sample handling, minimal reagent and disposable requirements, high sensitivity, and high throughput required for mass screening. Existing rapid molecular techniques typically sacrifice certain requirements to meet others. Yet, localized outbreaks of novel viral diseases happen daily in different parts of the world. In this context, respiratory diseases are of specific importance, as they are frequently airborne and highly contagious, with the potential for a rapid global spread. The widely accepted opinion is that another pandemic is just a question of time. To ensure that the containment efforts for the upcoming "disease X" are successful, introducing rapid, high-throughput, and highly sensitive diagnostic methods for detecting and identifying pathogens is critical. A few months into the pandemic, saliva was suggested as a diagnostic matrix for SARS-CoV-2 detection. The collection of saliva does not require swabs and is minimally invasive. In particular, extraction-free saliva-based assays require fewer reagents and disposables, and therefore are faster and cheaper, offering an appealing alternative for low-income countries. Unfortunately, current extraction-free saliva-based detection methods, such as direct RT-qPCR or isothermal amplification, have either low sensitivity or low throughput. Therefore, we believe that the presented highly sensitive ht-OMBi platform and the extraction-free saliva-based molecular assay can become an essential tool in the infectious disease monitoring toolbox.


Asunto(s)
COVID-19 , Nasofaringe , SARS-CoV-2 , Saliva , Sensibilidad y Especificidad , Humanos , Saliva/virología , COVID-19/diagnóstico , SARS-CoV-2/aislamiento & purificación , SARS-CoV-2/genética , Nasofaringe/virología , Técnicas de Diagnóstico Molecular/métodos , Técnicas de Diagnóstico Molecular/normas , Prueba de Ácido Nucleico para COVID-19/métodos , Adulto , Manejo de Especímenes/métodos , Persona de Mediana Edad , Israel , Anciano , Femenino , Masculino
9.
Nano Lett ; 24(23): 7040-7047, 2024 Jun 12.
Artículo en Inglés | MEDLINE | ID: mdl-38804573

RESUMEN

Flexible pressure sensors with a broad range and high sensitivity are greatly desired yet challenging to build. Herein, we have successfully fabricated a pressure-temperature dual sensor via an ionic assisted charge enhancement strategy. Benefiting from the immobilization effect for [EMIM+] [TFSI-] ion pairs and charge transfer between ionic liquid (IL) and HFMO (H10Fe3Mo21O51), the formed IL-HFMO-TPU pressure sensor shows a high sensitivity of 25.35 kPa-1 and broad sensing range (∼10 MPa), respectively. Furthermore, the sensor device exhibits high durability and stability (5000 cycles@1 MPa). The IL-HFMO-TPU sensor also shows the merit of good temperature sensing properties. Attributed to these superior properties, the proposed sensor device could detect pressure in an ultrawide sensing range (from Pa to MPa), including breathe and biophysical signal monitoring etc. The proposed ionic assisted enhancement approach is a generic strategy for constructing high performance flexible pressure-temperature dual sensor.

10.
Front Psychol ; 15: 1279889, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38756486

RESUMEN

Sensory Processing Sensitivity (SPS) is a temperament trait rooted in biology, and is distinguished by heightened awareness, emotional responsiveness, and sensitivity to environmental stimuli. In this study, we aimed to enable the assessment of SPS within Spanish-speaking populations. To achieve this, we translated, adapted, and validated the Sensory Processing Sensitivity Questionnaire (SPSQ), which offers a comprehensive evaluation of SPS, encompassing both positive and negative aspects of the trait. Participants were 1,004 (844 females, mean age 37) mainly from Chile (964), and 40 were from other Spanish-speaking regions. Confirmatory factor analysis, utilizing the diagonally weighted least squares method, was applied to validate the internal structure of the Spanish version of the SPSQ (S-SPSQ). Fit indices such as GFI, CFI, TLI, RMSEA, and SRMR were scrutinized. Reliability assessment utilized Cronbach's alpha and McDonald's Omega. Three models were examined: Model I (six factors) displayed robustness, Model II (six factors plus a general factor) did not show substantive improvement, and Model III (Higher Order and Bifactor) excelled in fit while balancing complexity and representation, thus validating the findings of the original SPSQ and indicating similar reliability coefficients. The study offers a balanced perspective on SPS and contributes to cross-cultural validation of an SPS instrument which may facilitate research and guide personalized therapeutic interventions, thus enhancing outcomes for highly sensitive persons.

11.
Glob Health Med ; 6(2): 101-107, 2024 Apr 30.
Artículo en Inglés | MEDLINE | ID: mdl-38690137

RESUMEN

Clinical and biochemical features of hepatitis delta virus (HDV) infections in Mongolia remain largely unknown. We aimed to investigate the clinical characteristics of HDV patients in Mongolia using several markers. The 143 hepatitis B surface antigen (HBsAg)-positive patients were divided into 122 HDV-positive and 21 HDV-negative patients by HDV RNA positivity. Subgroup analysis was performed between hepatitis B e antigen (HBeAg)-positive and -negative HDV-positive patients. Liver function, quantitative HBsAg (qHBsAg), anti-HDV Immunoglobulin (Ig) M, Mac-2 binding protein glycosylation isomer (M2BPGi), hepatitis B virus (HBV) DNA level, and HDV RNA level were tested. HDV RNA was positive in 85.3% (122/143) of patients showing anti-HDV IgG. Liver disease activity was higher in HDV-positive patients than in HDV-negative patients. The HDV-positive group included a higher proportion of patients with high qHBsAg and M2BPGi levels (p < 0.001). The positivity rate for anti-HDV IgM was significantly higher in the HDV-positive group (p < 0.001). HDV RNA levels showed an inverse correlation with qHBsAg levels in HBeAg-positive-HDV-positive patients (r = -0.49, p = 0.034), and a positive correlation with qHBsAg levels in HBeAg-negative patients (r = 0.35, p < 0.001). Hepatitis B virus (HBV) DNA and HDV RNA levels did not show any correlation. M2BPGi levels likewise did not correlate with HDV RNA levels. A high positivity rate for HDV RNA was observed for HBV patients in Mongolia using the highly sensitive HDV RNA assay. The positivity rate for anti-HDV IgM was high in HDV RNA-positive patients. Severity of liver disease and M2BPGi levels were both high in the HDV RNA-positive group.

12.
Adv Mater ; 36(26): e2400783, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38607655

RESUMEN

Halide perovskites have shown great potential in X-ray detection due to outstanding optoelectronic properties. However, finding a cost-effective and environmentally sustainable method for handling end-of-life devices has remained challenging. Here, a "One-Click Restart" eco-friendly recycling strategy is introduced for end-of-life perovskite X-ray detectors. This method, utilizing water, allows for the recapture and reuse of both perovskite and conductor materials. The process is straightforward and environmentally friendly, eliminating the need for further chemical treatment, purification, additional additives or catalysts, and complex equipment. A sustainable device cycle is developed by reconstructing flexible perovskite membranes for wearable electronics from recycled materials. Large-scale, flexible membranes made from metal-free perovskite DABCO-N2H5-I3 (DABCO = N-N'-diazabicyclo[2.2.2]octonium) achieve remarkably impressive average sensitivity of 6204 ± 268 µC Gyair -1 cm-2 and a low detection limit of 102.3 nGyair s-1, which makes highly effective for X-ray imaging. The sensitivity of recycled flexible devices not only matches that of single-crystal devices made with fresh materials but also ranks as the highest among all metal-free perovskite X-ray detectors. "One-Click Restart" applies to scalable flexible devices derived from aged single-crystal counterparts, offering significant cost, time, and energy savings compared to their single-crystal equivalents. Such advantages significantly boost future market competitiveness.

13.
Biosensors (Basel) ; 14(4)2024 Apr 07.
Artículo en Inglés | MEDLINE | ID: mdl-38667173

RESUMEN

Since different quantities of white blood cells (WBCs) in solution possess an adaptive osmotic pressure of cells, the WBCs themselves and in solution have similar concentrations, resulting in them having similar dielectric properties. Therefore, a microwave sensor could have difficulty in sensing the quantity variation when WBCs are in solution. This paper presents a highly sensitive, linear permittivity-inspired microwave biosensor for WBCs, counting through the evaporation method. Such a measurement method is proposed to record measurements after the cell solution is dripped onto the chip and is completely evaporated naturally. The proposed biosensor consists of an air-bridged asymmetric differential inductor and a centrally located circular fork-finger capacitor fabricated on a GaAs substrate using integrated passive fabrication technology. It is optimized to feature a larger sensitive area and improved Q-factor, which increases the effective area of interaction between cells and the electromagnetic field and facilitates the detection of their changes in number. The sensing relies on the dielectric properties of the cells and the change in the dielectric constant for different concentrations, and the change in resonance properties, which mainly represents the frequency shift, corresponds to the macroscopic change in the concentration of the cells. The microwave biosensors are used to measure biological samples with concentrations ranging from 0.25 × 106 to 8 × 106 cells per mL in a temperature (26.00 ± 0.40 °C) and humidity (54.40 ± 3.90 RH%) environment. The measurement results show a high sensitivity of 25.06 Hz/cells·mL-1 with a highly linear response of r2 = 0.99748. In addition, a mathematical modeling of individual cells in suspension is performed to estimate the dielectric constant of individual cells and further explain the working mechanism of the proposed microwave biosensor.


Asunto(s)
Técnicas Biosensibles , Humanos , Recuento de Leucocitos , Leucocitos/citología , Microondas
14.
J Glob Antimicrob Resist ; 37: 75-80, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38452900

RESUMEN

OBJECTIVES: P. aeruginosa is one of the most metabolically versatile bacteria having the ability to survive in multiple environments through its accessory genome. An important hallmark of P. aeruginosa is the high level of antibiotic resistance, which often makes eradication difficult and sometimes impossible. Evolutionary forces have led to this bacterium to develop high antimicrobial resistance with a variety of elements contributing to both intrinsic and acquired resistance. The objectives were to genetically and phenotypically characterizer P. aeruginosa strains isolated from companion animals of different species. METHODS: We characterized a collection of 39 P. aeruginosa strains isolated from infected animals. The genetic characterization was in relation to chromosomal profile by PFGE; content of virulence gene; presence of genomic islands (GIs); genes of the cytotoxins exported by T3SS: exoU, exoS, exoT and exoY; and type IV pili allele. The phenotypic characterization was based on patterns of susceptibility to different antimicrobials. RESULTS: Each strain had a PFGE profile, a high virulence genes content, and a large accessory genome. However, most of the strains presented high sensitivity to almost all antimicrobials tested, showing no acquired resistance (no ß-lactamases). The exception to this lack of resistance was seen with penicillin. CONCLUSIONS: P. aeruginosa could be a naturally sensitive bacterium to standard antimicrobials but could rapidly develop intrinsic and acquired resistance when the bacterium is exposed to pressure exerted by antibiotics, as observed in hospital settings.


Asunto(s)
Antibacterianos , Islas Genómicas , Pruebas de Sensibilidad Microbiana , Infecciones por Pseudomonas , Pseudomonas aeruginosa , Factores de Virulencia , Pseudomonas aeruginosa/genética , Pseudomonas aeruginosa/efectos de los fármacos , Pseudomonas aeruginosa/patogenicidad , Pseudomonas aeruginosa/aislamiento & purificación , Animales , Infecciones por Pseudomonas/microbiología , Infecciones por Pseudomonas/veterinaria , Antibacterianos/farmacología , Factores de Virulencia/genética , Virulencia/genética , Farmacorresistencia Bacteriana Múltiple/genética
15.
Viruses ; 16(3)2024 02 29.
Artículo en Inglés | MEDLINE | ID: mdl-38543748

RESUMEN

Monkeypox virus (MPXV), the pathogen responsible for the infectious disease monkeypox, causes lesions on the skin, lymphadenopathy, and fever. It has posed a global public health threat since May 2022. Highly sensitive and specific detection of MPXV is crucial for preventing the spread of the disease. Pyrococcus furiosus Argonaute (PfAgo) is an artificial DNA-guided restriction cleavage enzyme programmable with 5'-phosphorylated ssDNA sequences, which can be developed to specifically detect nucleic acids of pathogens. Here, a PfAgo-based system was established for the detection of MPXV-specific DNA targeting the F3L gene. A short amplicon of 79 bp could be obtained through a fast PCR procedure, which was completed within 45 min. Two 5'-phosphorylation guide DNAs were designed to guide PfAgo to cleave the amplicon to obtain an 18 bp 5'-phosphorylation sequence specific to MPXV, not to other orthopoxviruses (cowpox, variola, and vaccinia viruses). The 18 bp sequence guided PfAgo to cleave a designed probe specific to MPXV to emit fluorescence. With optimized conditions for the PfAgo-MPXV system, it could be completed in 60 min for the detection of the extracted MPXV DNA with the limit of detection (LOD) of 1.1 copies/reaction and did not depend on expensive instruments. Successful application of the PfAgo-MPXV system in sensitively detecting MPXV in simulated throat swabs, skin swabs, sera, and wastewater demonstrated the system's good performance. The PfAgo platform, with high sensitivity and specificity established here, has the potential to prevent the spread of MPXV.


Asunto(s)
Mpox , Pyrococcus furiosus , Humanos , Pyrococcus furiosus/genética , Monkeypox virus/genética , ADN , Proteínas Argonautas/genética
16.
ACS Appl Mater Interfaces ; 16(10): 12754-12764, 2024 Mar 13.
Artículo en Inglés | MEDLINE | ID: mdl-38382473

RESUMEN

Developing high-performance organic-inorganic ultraviolet (UV) photodetectors (PDs) has attracted considerable attention. However, this development has been hindered due to poor directional charge-transfer ratios in transport layers, excessive costs, and an ambiguous underlying mechanism. To tackle these challenges, we constructed a heterojunction of economic Mg-doped ZnO (MgZnO) nanorods and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) [PEDOT:PSS (P:P)] that utilizes dipole field-driven spontaneous polarization to enhance photogenerated charge kinetics. As a result, the proposed heterojunction has an improved noise equivalent power of 3.16 × 10-11 W Hz-1/2), a normalized detection rate (D*) of 8.96 × 109 jones, and external quantum efficiency comparable to other ZnO-based devices. Notably, the prepared PDs showed a photocurrent of 4.8 × 10-3 µA under a faint UV light having an intensity of 1 × 10-5 W cm-2, exceeding the performance of the most state-of-the-art ZnO-based UV sensors. The introduction of Mg into ZnO is responsible for the high performance, as it causes a lattice mismatch and distortion of the Mg-doped ZnO unit cell. It results in improved dipole movement and the creation of a dipole field, accelerating the directional electron-transfer process. Using a dipole field to manipulate the migration and transport of photogenerated carriers represents a promising approach for achieving outstanding performance in UV PDs.

17.
Stress Health ; 40(2): e3297, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-37492995

RESUMEN

Sensory-processing sensitivity (SPS) is a temperamental trait that describes individual differences in sensitivity to environmental stimuli. Previous studies have shown that highly sensitive individuals are more vulnerable to stress and to sleep-related difficulties. In light of this evidence, we hypothesized that SPS is associated with an increase in insomnia symptoms and that this correlation would be mediated by increased perceived stress and sleep reactivity. To test this hypothesis, we conducted a cross-sectional study on 358 adults who completed a survey that included self-report measures of sensitivity, perceived stress, sleep reactivity, and insomnia symptoms. Correlation analysis revealed that SPS was positively related to both stress-related and sleep-related variables. We then conducted a mediation analysis, which revealed that SPS was positively related to insomnia symptoms and that this relationship was fully mediated by sleep reactivity but not mediated at all by perceived stress. The current findings suggest that sleep reactivity may contribute to the development of insomnia symptoms in highly sensitive individuals. Therefore, these results suggests that sleep reactivity should be assessed in highly sensitive individuals and that it could be important to evaluate and further study this relationship.


Asunto(s)
Trastornos del Inicio y del Mantenimiento del Sueño , Adulto , Humanos , Estudios Transversales , Estrés Psicológico/complicaciones , Sueño , Depresión
18.
JMIR Res Protoc ; 12: e49243, 2023 Dec 06.
Artículo en Inglés | MEDLINE | ID: mdl-38055312

RESUMEN

BACKGROUND: Mental health problems during pregnancy and post partum are common and associated with negative short- and long-term impacts on pregnant individuals, obstetric outcomes, and child socioemotional development. Socio-environmental factors are important predictors of perinatal mental health, but the effects of the environment on mental health are heterogeneous. The differential susceptibility theory and the environmental sensitivity framework suggest that individuals differ in their degree of sensitivity to positive and negative environments, which can be captured by individual phenotypes such as temperament and personality. While there is strong evidence for these models in childhood, few studies examined them in adults, and they were not examined in pregnancy. OBJECTIVE: The primary objective of the Experiences of Pregnancy study is to explore whether childhood and current environments are associated with mental health and well-being in pregnancy and whether these effects depend on individual sensitivity phenotypes (personality). This study also aims to gather important psychosocial and health data for potential secondary data analyses and integrative data analyses. METHODS: We will conduct a longitudinal cohort study. The study was not registered elsewhere, other than this protocol. Participants will be recruited through social media advertisements linking to the study website, followed by an eligibility call on Zoom (Zoom Video Communications). Participants must be aged 18 years or older, currently residing in the United States as citizens or permanent residents, and currently planning to continue the pregnancy. A minimum of 512 participants will be recruited based on power analyses for the main objectives. Since the data will also be a resource for secondary analyses, up to 1000 participants will be recruited based on the available budget. Participants will be in their first trimester of pregnancy, and they will be followed at each trimester and once post partum. Data will be obtained through self-reported questionnaires assessing demographic factors; pregnancy-related factors; delivery, labor, and birth outcomes; early infant feeding; individual personality factors; childhood and current environments; mental health and well-being; attachment; and infant temperament. A series of measures were taken to safeguard the study from web robots and fraudulent participants, as well as to reduce legal and social risks for participants following Dobbs v. Jackson. RESULTS: The study received ethics approval in April 2023 from the University of Oklahoma-Norman Campus Institutional Review Board. Recruitment occurred from May to August 2023, with 3 follow-ups occurring over 10 months. CONCLUSIONS: The Experiences of Pregnancy study will extend theories of environmental sensitivity, mainly applied in children to the perinatal period. This will help better understand individual sensitivity factors associated with risk, resilience, plasticity, and receptivity to negative and positive environmental influences during pregnancy for pregnant individuals. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): PRR1-10.2196/49243.

19.
Anal Chim Acta ; 1283: 341907, 2023 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-37977798

RESUMEN

BACKGROUND: As a vital energy source, light is one of the most significant environmental signals for plants' growth and development. The crosstalk amongst phytohormones regulated by light exhibits quantitative dynamic changes, but methodologies to analyze their distribution during plant growth are still limited. Rapid, highly sensitive, low-invasive detection and simultaneous assessment of the levels of multiple classes of phytohormones have important phytology applications, however the existing sample pretreatment strategies remain intricate, laborious, and far from being developed for in vivo high-sensitivity testing. (81) RESULTS: We applied a nanoconfined liquid phase nanoextraction (NLPNE) technique based on acidified carbon nanofibers (ACNFs) in combination with LC-ESI-MS/MS for highly sensitive analysis of acidic phytohormones' photoregulation and dynamic distribution. In this system, the mass transfer ability of analytes entering the nanoconfined space is significantly improved given the nanoconfined effect. In particular, the accelerated and strong adsorption of alkaline compounds to the ACNFs surface provide minimum interference for acidic compounds (photosensitive phytohormones), which facilitates their simple, fast, and selective quantification with improved sensitivity. The ACNFs-NLPNE strategy achieved quantitative enrichment of multi-class phytohormones in less than 5 min, and detection limits down to 0.49 fg mL-1. Moreover, we monitored the phytohormone changes under red and blue monochromatic light with relative standard deviations <13.4 %. The results further indicated that short-time red light regulation promoted Lepidium sativum L. growth while blue light inhibited it. (141) SIGNIFICANCE: A nanoconfinement effect-based sample pretreatment platform was developed for monitoring photoregulation phytohormones dynamic distribution with higher sensitivity and stability. Our findings highlighted the importance of the NLPNE approach in providing an accurate plant crosstalk information at the molecular level, which opens a promising avenue for investigating internal hormonal responses to external stimuli. (52).


Asunto(s)
Reguladores del Crecimiento de las Plantas , Espectrometría de Masas en Tándem , Reguladores del Crecimiento de las Plantas/análisis , Espectrometría de Masas en Tándem/métodos , Cromatografía Liquida/métodos , Plantas , Luz , Ácidos , Cromatografía Líquida de Alta Presión/métodos
20.
Front Psychiatry ; 14: 1148646, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37810603

RESUMEN

Background: Psychiatric patients may refer to concepts neither medically accepted nor easily understood to describe their experiences when seeking medical care. These concepts may lie outside the clinician's cultural references and consequently hinder the diagnostic consultation. In the fifth version of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), the clinical instrument Cultural Formulation Interview (CFI) was included. The CFI aims to facilitate the gathering and synthesis of culturally relevant clinical information. The notion of Cultural Concepts of Distress (CCD) was also introduced in DSM-5. The CCD include the subterms of the cultural syndrome, cultural explanation, and cultural idiom of distress. No previous study has used CFI for conceptualizing a cultural notion as a CCD. This study aimed to approach the cultural notion of being a highly sensitive person (HSP) in patients with bipolar disorder (BD) by applying the CFI. The cultural notion of HSP has garnered great interest globally, although scientific evidence is limited. No direct correlation between BD and HSP was hypothesized before or during the study process. Methods: In this case study, three patients with BD who reported being HSP were interviewed using the CFI. Furthermore, the applicability of the CCD was examined based on the outcomes of the CFI using an interpretive approach. Results: All three patients reported that the CFI facilitated the clinical consultation, and in one of the cases, it may also have increased the treatment engagement. Based on the synthesis of the CFI outcomes in these illustrative cases, HSP could be understood as a cultural syndrome, a cultural explanation, and a cultural idiom of distress. Conclusion: By applying a person-centered perspective, CFI was used for the conceptualization of a cultural notion as a CCD (i.e., HSP in our study). Moreover, the cases highlight the complexity of illness insight in BD as a medical phenomenon when patients' illness perspectives are taken into consideration. Future studies need to further examine the clinical relevance of the CFI in the management of BD.

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