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1.
Spectrochim Acta A Mol Biomol Spectrosc ; 325: 125145, 2024 Sep 14.
Artículo en Inglés | MEDLINE | ID: mdl-39299072

RESUMEN

Luminous imaging of latent fingerprints (LFPs) necessitates the possession of high-brightness aggregation-state luminescence by developers to ensure sufficient imaging contrast and resolution. A novel strategy involving incremental rotor modification is presented for AIE activation of the iridium developer. The rotor proliferation prominently improves the rotational activity of groups and facilitates high-efficiency RIM, thereby prompting the AIE activation of iridium developer with high luminous efficiency. Subsequently, a prompt, high-contrast, and robust LFP imaging protocol is developed utilizing the high-brightness AIE-active iridium developer. This innovative protocol realizes the luminous imaging and quantification of microscopic features in fingerprint ridges and furrows, including ridge widths, edge morphology of ridges, included angles, pores, and pore pitches with exceptional imaging contrast and refined detail resolution. Moreover, it allows for accurate identification of individual traits across diverse substrates without any pre-/post-processing to LFPs. The high-brightness AIE-active iridium developer provides outstanding aging resistance to developed fingerprints, thereby strongly supporting the acquisition, transfer, and preservation of fingerprint evidence. The luminous imaging protocol of LFPs based on high-brightness AIE exhibits robust adaptability to actual scenes and offers a premium scheme for facilitating forensic investigation.

2.
BMC Biol ; 22(1): 210, 2024 Sep 18.
Artículo en Inglés | MEDLINE | ID: mdl-39294757

RESUMEN

BACKGROUND: X chromosome inactivation (XCI) is a critical epigenetic event for dosage compensation of X-linked genes in female mammals, ensuring developmental stability. A robust in vitro model is required for mimicking XCI during the early stages of embryonic development. This methodology article introduces an advanced framework for the in-depth study of XCI using human pluripotent stem cells (hPSCs). By focusing on the transition between naive and primed pluripotent states, we highlight the role of long non-coding RNA X-inactive specific transcript (XIST) and epigenetic alterations in mediating XCI. RESULTS: Our methodology enables the distinction between naive and primed hESCs based on XIST expression and the activity of X-linked reporters, facilitating the investigation of XCI initiation and maintenance. Through detailed experimental procedures, we demonstrate the utility of our hESC lines in modeling the process of human XCI, including the establishment of conditions for random XCI induction and the analysis of X chromosome reactivation. METHODS: The study outlines a comprehensive approach for characterizing the X chromosome status in hPSCs, employing dual fluorescent reporter hESC lines. These reporter lines enable real-time tracking of XCI dynamics through differentiation processes. We detailed protocols for the induction of X chromosome reactivation and inactivation, as well as the X status characterization methods including cultivation of hESCs, flow cytometric analysis, RNA fluorescence in situ hybridization (FISH), and transcriptome sequencing, providing a step-by-step guide for researchers to investigate XCI mechanisms in vitro. CONCLUSIONS: This article provides a detailed, reproducible methodology for studying XCI mechanisms in vitro, employing hPSCs as a model system. It presents a significant advance in our ability to investigate XCI, offering potential applications in developmental biology, disease modeling, and regenerative medicine. By facilitating the study of XCI dynamics, this methodological framework paves the way for deeper understanding and manipulation of this fundamental biological process.


Asunto(s)
Células Madre Pluripotentes , ARN Largo no Codificante , Inactivación del Cromosoma X , Humanos , Inactivación del Cromosoma X/genética , Células Madre Pluripotentes/metabolismo , ARN Largo no Codificante/genética , ARN Largo no Codificante/metabolismo , Línea Celular , Cromosomas Humanos X/genética
3.
Ecotoxicol Environ Saf ; 284: 117018, 2024 Sep 10.
Artículo en Inglés | MEDLINE | ID: mdl-39260214

RESUMEN

Hexavalent chromium [Cr(VI)] is a widely distributed carcinogen in industrial contexts and general environmental contexts. Emerging research highlights the central role of ribosomal DNA (rDNA) in DNA Damage Responses (DDRs). However, there remains a lack of investigation into the potential dose-dependent relationship between exposure to Cr(VI) and alterations in rDNA copy number (CN), as well as the related mechanisms underlying these effects. A molecular epidemiological investigation involving 67 workers exposed to Cr(VI) and 75 unexposed controls was conducted. There was a notable increase in ZNF385A expression, variations in rDNA CN, and elevated γH2AX levels in the peripheral blood of Cr(VI)-exposed workers. Restricted cubic spline (RCS) models showed that blood Cr levels in the exposed population exhibited non-linear dose-dependent relationships with γH2AX, rDNA CN, and ZNF385A. Of considerable interest, there were robust and positive associations between ZNF385A and both γH2AX and rDNA CN. Further in vitro experiments provided concrete evidence that Cr(VI) simultaneously caused an increase in ZNF385A expression and variations in rDNA CN. ZNF385A-depleted cells showed increased sensitivity to Cr(VI)-mediated DDRs and alterations in rDNA CN. This study indicated that ZNF385A played a highly significant role in the rDNA CN variation in response to Cr(VI)-induced DNA damage.

4.
Neurosurgery ; 2024 Sep 09.
Artículo en Inglés | MEDLINE | ID: mdl-39248488

RESUMEN

BACKGROUND AND OBJECTIVES: The aim of this study was to investigate the efficacy and safety of endovascular treatment (EVT) in patients with acute vertebrobasilar artery occlusion (VBAO) within 24 hours of estimated occlusion time (EOT) and to evaluate the effect of early and late time window in a cohort of patients with VBAO treated with EVT. METHODS: Retrospective analysis was conducted on patients within 24 hours of the EOT in 65 stroke centers in China. Favorable outcome was defined as modified Rankin Scale ≤3 at 90 days. Patients were divided into the medical management (MM) group and the EVT group. Times were dichotomized into early (EOT ≤6 hours) and late (>6 hours) time windows. Multivariate logical regression models were used to evaluate the efficacy and safety of EVT and the effect of time windows on outcomes in EVT patients. RESULTS: Among 4124 patients, 2473 and 1651 patients were included in the early and late windows, respectively. 1702 patients received MM and 2422 were treated with EVT. EVT was associated with a higher rate of a favorable outcome at 90 days both in early (odds ratio [OR] 2.16, 95% CI 1.94-2.41) and late (OR 1.89, 95% CI 1.65-2.17) time windows. No differences were found regarding favorable outcome (OR 0.95, 95% CI 0.87-1.03) between VBAO patients treated with EVT within and beyond 6 hours. CONCLUSION: Patients with acute VBAO who received EVT within 24 hours were associated with improved favorable outcome compared with patients who received MM. EVT beyond 6 hours is feasible and safe with no increase in symptomatic intracranial hemorrhage.

5.
J Am Heart Assoc ; : e035225, 2024 Sep 18.
Artículo en Inglés | MEDLINE | ID: mdl-39291465

RESUMEN

BACKGROUND: Cardiovascular diseases (CVDs) are a leading global health concern. Emerging evidence suggests a potential protective role of well-being in reducing CVD risk. METHODS AND RESULTS: We conducted a cohort analysis using the UK Biobank data set, encompassing 121 317 participants. We assessed the well-being of participants using a well-being index derived from baseline questionnaires. Well-being categories were derived by latent class analysis using general happiness and satisfaction with family, friendships, health, and finance situations. The relationship between well-being and 4 major CVDs was analyzed using Cox proportional hazards models and Mendelian randomization. The study also examined the impacts of well-being on lifestyle factors and inflammatory markers, and its mediating role in the well-being-CVD relationship. Higher well-being was associated with a significantly reduced risk of various CVDs. Latent class analysis identified 4 distinct well-being groups (low, variable, moderate-to-high, and high satisfaction), with higher satisfaction levels generally associated with lower risk of CVDs. Mendelian randomization suggested potential causal relationships between well-being and reduced risk of CVDs. Participants with greater well-being demonstrated healthier behaviors and lower levels of inflammatory markers. Mediation analysis indicated that lifestyle and inflammatory markers partially mediated the relationship between well-being and CVDs. CONCLUSIONS: This study demonstrates a robust inverse association between well-being and the risks of CVDs, suggesting that enhancing well-being may be a viable strategy for CVD prevention. The role of lifestyle factors and inflammation as a mediator provides insight into possible biological pathways linking psychological states and cardiovascular health.

6.
Sci Total Environ ; 952: 175946, 2024 Nov 20.
Artículo en Inglés | MEDLINE | ID: mdl-39218111

RESUMEN

Marine dinoflagellates are increasingly affected by ongoing global climate changes. While understanding of their physiological and molecular responses to individual stressors anticipated in the future ocean has improved, their responses to multiple concurrent stressors remain poorly understood. Here, we investigated the individual and combined effects of elevated temperature (26 °C relative to 22 °C), increased pCO2 (1000 µatm relative to 400 µatm), and high nitrogen: phosphorus ratio (180:1 relative to 40:1) on a harmful algal bloom-causing dinoflagellate Prorocentrum obtusidens under short-term (28 days) exposure. Elevated temperature was the most dominant stressor affecting P. obtusidens at physiological and transcriptomic levels. It significantly increased cell growth rate and maximum photosynthetic efficiency (Fv/Fm), but reduced chlorophyll a, particulate organic carbon, particulate organic nitrogen, and particulate organic phosphorus. Elevated temperature also interacted with other stressors to produce synergistic positive effects on cell growth and Fv/Fm. Transcriptomic analysis indicated that elevated temperature promoted energy production by enhancing glycolysis, tricarboxylic acid cycle, and nitrogen and carbon assimilation, which supported rapid cell growth but reduced material storage. Increased pCO2 enhanced the expression of genes involved in ionic acid-base regulation and oxidative stress resistance, whereas a high N:P ratio inhibited photosynthesis, compromising cell viability, although the effect was alleviated by elevated temperature. The combined effect of these multiple stressors resulted in increased energy metabolism and up-regulation of material-synthesis pathways compared to the effect caused by elevated temperature alone. Our results underscore ocean warming as the predominant stressor for dinoflagellates and highlight the complex, synergistic effects of multi-stressors on dinoflagellates.


Asunto(s)
Cambio Climático , Dinoflagelados , Floraciones de Algas Nocivas , Dinoflagelados/fisiología , Agua de Mar/química , Nitrógeno , Estrés Fisiológico , Calor/efectos adversos , Fotosíntesis , Temperatura , Dióxido de Carbono
7.
Zhongguo Dang Dai Er Ke Za Zhi ; 26(9): 967-973, 2024.
Artículo en Chino | MEDLINE | ID: mdl-39267513

RESUMEN

OBJECTIVES: To study the effects and mechanisms of tetramethylpyrazine (TMP) on tumor necrosis factor-α (TNF-α)-induced inflammatory injury in human coronary artery endothelial cells (HCAEC). METHODS: HCAEC were randomly divided into four groups: the control group (no treatment), the model group (treated with TNF-α, 50 ng/mL for 24 hours), the TMP group (pre-treated with TMP, 80 µg/mL for 12 hours followed by TNF-α treatment for 24 hours), and the SIRT1 inhibitor group (pre-treated with TMP and the specific SIRT1 inhibitor EX527 for 12 hours followed by TNF-α treatment for 24 hours). Cell viability was assessed using the CCK-8 method, lactate dehydrogenase (LDH) activity was measured using an LDH assay kit, reactive oxygen species (ROS) levels were observed using DCFH-DA staining, expression of pyroptosis-related proteins was detected by Western blot, and SIRT1 expression was analyzed using immunofluorescence staining. RESULTS: Compared to the control group, the model group showed decreased cell viability, increased LDH activity, ROS level and expression of pyroptosis-related proteins, and decreased SIRT1 expression (P<0.05). Compared to the model group, the TMP group exhibited increased cell viability, decreased LDH activity, ROS level and expression of pyroptosis-related proteins, and increased SIRT1 expression (P<0.05). In comparison to the TMP group, the SIRT1 inhibitor group showed decreased cell viability, increased LDH activity, ROS level and expression of pyroptosis-related proteins, and decreased SIRT1 expression (P<0.05). CONCLUSIONS: TMP may attenuate TNF-α-induced inflammatory injury in HCAEC, which is associated with the inhibition of pyroptosis and activation of the SIRT1 signaling pathway.


Asunto(s)
Células Endoteliales , Pirazinas , Especies Reactivas de Oxígeno , Transducción de Señal , Sirtuina 1 , Factor de Necrosis Tumoral alfa , Sirtuina 1/metabolismo , Sirtuina 1/fisiología , Humanos , Pirazinas/farmacología , Transducción de Señal/efectos de los fármacos , Células Endoteliales/efectos de los fármacos , Factor de Necrosis Tumoral alfa/metabolismo , Especies Reactivas de Oxígeno/metabolismo , Supervivencia Celular/efectos de los fármacos , Piroptosis/efectos de los fármacos , Células Cultivadas , Inflamación/tratamiento farmacológico
8.
Molecules ; 29(17)2024 Aug 31.
Artículo en Inglés | MEDLINE | ID: mdl-39274998

RESUMEN

The model precatalyst sp3- and sp2-N dinitrogen-coordinated zinc-heteroimidazole has been used as an efficient catalyst for the ring-opening polymerization of cyclic esters. Subsequent to our exceptional active 5,6,7-trihydroquinolin-8-amine-zinc catalysts for the ring-opening polymerization (ROP) of ε-caprolactone, various pyridine-fused cycloalkanones (ring size from five to eight) are developed for the correspondent fused amine-pyridine derivatives and their zinc-heteroimidazole chloride complexes Zn1-Zn8 (LZnCl2) bearing N-diphenylphosphinoethyl pendants. Activated with two equivalents of LiN(SiMe3)2, the title zinc complexes efficiently promote the ROP of L-lactide (L-LA) in situ; among them, Zn4/2Li(NSiMe3)2 catalyzed 500 equivalent L-LA at 80 °C with 92% conversion in 5 min (TOF: 5520 h-1). Under the same conditions, the catalytic efficiency for the ROP of rac-LA by Zn1-Zn8/2Li(NSiMe3)2 was slightly lower than that for L-LA (highest TOF: 4440 h-1). In both cases, cyclooctyl-fused pyridyl-zinc complexes exhibited higher activity than others, while the cycloheptyl-fused zinc complexes showed the lowest activity. The microstructure analysis of the polymers showed they possessed a linear structure capped with CH3O as major and cyclic structure as minor. In this work, all the ligands and zinc complexes were well characterized by 1H/13C/31P NMR, FT-IR spectroscopy as well as elemental analysis.

9.
Dalton Trans ; 2024 Sep 16.
Artículo en Inglés | MEDLINE | ID: mdl-39279343

RESUMEN

Targeting pour point depressants of low-molecular weight and branched polyethylenes, a series of 9-[2,4-bis(benzhydryl)-6-R-phenylimino]-5,6,7,8-tetrahydro-cycloheptapyridine-nickel complexes (Ni1-Ni10) were developed as efficient precatalysts. Upon activation with either EASC or MAO, all nickel complex precatalysts exhibited high activity [up to 8.12 × 106 g PE (mol of Ni)-1 h-1] with single-site behavior toward ethylene polymerization, producing low-molecular weight and unimodal polyethylenes. The resultant polyethylenes possessed high branching with predominant methyl groups and longer chains, along with either internal vinylene or vinyl end groups. The activities of these complex precatalysts were heavily rationalized on the basis of the electronic and steric influences of their 6-R-substituents, with bromides following the order of Ni5 (F) > Ni4 (Cl) > Ni1 (Me) > Ni2 (Et) > Ni3 (iPr) and chlorides following the order of Ni10 (F) > Ni9 (Cl) > Ni6 (Me) > Ni7 (Et) > Ni8 (iPr). DFT calculations revealed the crucial role of agostic interactions (-Ni⋯H-C(Ph2)) between the nickel metal and the hydrogen atom of the ortho bulky group in achieving high catalytic activity and intramolecular hydrogen bonding with the fluoride atom in producing low Mw PE wax. Moreover, the organic compounds and nickel complexes were well characterized, including representative complexes Ni3 and Ni4, via single-crystal X-ray diffraction.

10.
J Neurointerv Surg ; 2024 Sep 09.
Artículo en Inglés | MEDLINE | ID: mdl-39251358

RESUMEN

BACKGROUND: The clinical relevance of differentiating between mTICI (modified Thrombolysis In Cerebral Infarction) 2b and mTICI 3 in patients with vertebrobasilar artery occlusion (VBAO) remains unclear. This study aimed to investigate whether mTICI 3 improves functional outcomes compared with mTICI 2b in patients with VBAO and whether this improvement differs according to extent of ischemic damage. METHODS: This retrospective study enrolled patients with VBAO within 24 hours of the estimated occlusion time at 65 stroke centers in a nationwide registration in China. The primary outcome was favorable functional outcome (modified Rankin scale score 0-3) at 90 days. Patients were matched by final mTICI grade using propensity score matching (PSM) and inverse probability of treatment weighting (IPTW). Logistic regression and ordinal regression models were used to assess the impact of mTICI 2b versus mTICI 3 grading on prognosis, based on different extent of ischemia damage (posterior circulation Alberta Stroke Program Early CT Score-pc-ASPECTS of 9-10, 7-8, and 3-6) and treatment strategies (bridging therapy and direct endovascular therapy (EVT)). RESULTS: A total of 2075 patients with VBAO and successful reperfusion were included, 652 patients (31.4%) achieved mTICI 2b and 1423 patients (68.6%) achieved mTICI 3. After adjustment for confounders, achieving mTICI 3 following EVT in patients with VBAO and pc-ASPECTS 9-10 (OR 1.54, 95% CI 1.16 to 2.03) and pc-ASPECTS 7-8 (OR 1.80, 95% CI (1.26 to 2.56) were associated with favorable functional outcome compared with mTICI 2b, especially in those receiving direct EVT. However, in patients with pc-ASPECTS≤6, functional outcomes at 90 days did not differ between mTICI 3 and mTICI 2b (OR 1.12, 95% CI 0.67 to 1.88), irrespective of using bridging therapy or direct EVT. CONCLUSION: In patients with VBAO undergoing EVT with pc-ASPECTS>6, achieving mTICI 3 favors better outcomes compared with mTICI 2b, especially in those receiving direct EVT. However, in patients with pc-ASPECTS≤6, mTICI 3 did not improve functional outcomes compared with mTICI 2b. Interventionalists should carefully assess the risk-benefit of additional maneuvers once mTICI 2b reperfusion is restored in EVT for patients with VBAO and pc-ASPECTS≤6. Further studies are needed to guide treatment decisions in these cases.

11.
Angle Orthod ; 94(4): 432-440, 2024 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-39229952

RESUMEN

OBJECTIVES: To evaluate changes of the upper airway and oral cavity volumes in patients with skeletal Class III malocclusion undergoing bimaxillary orthognathic surgery, and to analyze the correlation between postoperative upper airway decrease and the amount of jaw movement and oral cavity volume reduction. MATERIALS AND METHODS: Thirty patients (16 males and 14 females) undergoing bimaxillary surgery were included. Three-dimensional reconstruction of the upper airway and oral cavity were performed using preoperative (T0) and postoperative (T1) (6 months) cone-beam computed tomography scans. RESULTS: The volume, sagittal area and minimum cross-sectional area of the upper airway were diminished (P < .001). The decrease in volume and minimum cross-sectional area in the oropharyngeal region of the upper airway were weakly correlated with B-point posterior movement (P < .05). Total oral cavity volume was decreased, with maxillary oral volume increasing and mandibular oral volume decreasing (P < .001). Upper airway decrease was highly correlated with total oral volume reduction and mandibular oral volume reduction, with the most significant correlation being with total oral volume reduction (P < .001). CONCLUSIONS: Class III bimaxillary surgery reduced the volume, sagittal area, and minimum cross-sectional area of the upper airway as well as oral cavity volume. Upper airway changes were weakly correlated with anterior-posterior mandibular movement but significantly correlated with oral cavity volume changes. Thus, oral cavity volume reduction is a crucial factor of upper airway decrease in patients with skeletal Class III malocclusion undergoing bimaxillary orthognathic surgery.


Asunto(s)
Tomografía Computarizada de Haz Cónico , Imagenología Tridimensional , Maloclusión de Angle Clase III , Boca , Procedimientos Quirúrgicos Ortognáticos , Humanos , Tomografía Computarizada de Haz Cónico/métodos , Maloclusión de Angle Clase III/cirugía , Maloclusión de Angle Clase III/diagnóstico por imagen , Femenino , Masculino , Procedimientos Quirúrgicos Ortognáticos/métodos , Adulto , Boca/diagnóstico por imagen , Imagenología Tridimensional/métodos , Adulto Joven , Proyectos Piloto , Maxilar/diagnóstico por imagen , Maxilar/cirugía , Adolescente , Mandíbula/diagnóstico por imagen , Mandíbula/cirugía , Orofaringe/diagnóstico por imagen , Orofaringe/patología , Faringe/diagnóstico por imagen
12.
J Affect Disord ; 367: 255-262, 2024 Sep 03.
Artículo en Inglés | MEDLINE | ID: mdl-39236880

RESUMEN

BACKGROUND: Respective changes in neurovascular coupling (NVC) and glymphatic function have been reported in post-stroke depression (PSD). Recent studies have found a link between NVC and waste clearance by the glymphatic system, which has not been illustrated in PSD. METHOD: We prospectively recruited ninety-six stroke patients and forty-four healthy controls (HC), with fifty-nine patients undergoing a second MRI scan. NVC metrics were investigated by exploring Pearson correlation coefficients and ratios between cerebral blood flow (CBF) and BOLD-derived quantitative maps (ALFF, fALFF, REHO maps). Diffusion tensor imaging along the perivascular (DTI-ALPS) index was used to reflect glymphatic function. We first analyzed the altered NVC metrics in stroke patients relative to the HC group. Then, we explored the relationship between NVC metrics, ALPS index and depressive symptoms at baseline and during the follow-up period through correlation and mediation analyses. RESULTS: Stroke patients exhibited significantly lower global CBF-fALFF coupling and ALPS index. At the regional level, abnormal NVC alterations in brain regions involved in cognition, emotion, and sensorimotor function in PSD. Baseline analyses showed that ALPS index exhibited positive associations with both global and local NVC and abnormal regional NVC may contribute to generation of PSD by reducing glymphatic function (ß = -0.075, p < 0.05, CI = [-0.169 to -0.012]). Longitudinal analyses similarly showed that ALPS index changes were positively associated with changes in NVC and mediated improvements in depressive symptoms. CONCLUSION: Our findings suggest that NVC abnormalities leading to impaired glymphatic system function may be a potential neurobiological mechanism of PSD.

13.
Aging Cell ; : e14336, 2024 Sep 17.
Artículo en Inglés | MEDLINE | ID: mdl-39287420

RESUMEN

Glycogen synthase kinase-3α/ß (GSK3α/ß) is a critical kinase for Tau hyperphosphorylation which contributes to neurodegeneration. Despite the termination of clinical trials for GSK3α/ß inhibitors in Alzheimer's disease (AD) treatment, there is a pressing need for novel therapeutic strategies targeting GSK3α/ß. Here, we identified the compound AS1842856 (AS), a specific forkhead box protein O1 (FOXO1) inhibitor, reduced intracellular GSK3α/ß content in a FOXO1-independent manner. Specifically, AS directly bound to GSK3α/ß, promoting its translocation to the multivesicular bodies (MVBs) and accelerating exocytosis, ultimately decreasing intracellular GSK3α/ß content. Expectedly, AS treatment effectively suppressed Tau hyperphosphorylation in cells exposed to okadaic acid or expressing the TauP301S mutant. Furthermore, AS was visualized to penetrate the blood-brain barrier (BBB) using an imaging mass microscope. Long-term treatment of AS enhanced cognitive function in P301S transgenic mice by mitigating Tau hyperphosphorylation through downregulation of GSK3α/ß expression in the brain. Altogether, AS represents a novel small-molecule GSK3α/ß inhibitor that facilitates GSK3α/ß exocytosis, holding promise as a therapeutic agent for GSK3α/ß hyperactivation-associated disorders.

14.
Chin Med ; 19(1): 127, 2024 Sep 15.
Artículo en Inglés | MEDLINE | ID: mdl-39278905

RESUMEN

The aim of this study was to develop a machine learning-assisted rapid determination methodology for traditional Chinese Medicine Constitution. Based on the Constitution in Chinese Medicine Questionnaire (CCMQ), the most applied diagnostic instrument for assessing individuals' constitutions, we employed automated supervised machine learning algorithms (i.e., Tree-based Pipeline Optimization Tool; TPOT) on all the possible item combinations for each subscale and an unsupervised machine learning algorithm (i.e., variable clustering; varclus) on the whole scale to select items that can best predict body constitution (BC) classifications or BC scores. By utilizing subsets of items selected based on TPOT and corresponding machine learning algorithms, the accuracies of BC classifications prediction ranged from 0.819 to 0.936, with the root mean square errors of BC scores prediction stabilizing between 6.241 and 9.877. Overall, the results suggested that the automated machine learning algorithms performed better than the varclus algorithm for item selection. Additionally, based on an automated machine learning item selection procedure, we provided the top three ranked item combinations with each possible subscale length, along with their corresponding algorithms for predicting BC classification and severity. This approach could accommodate the needs of different practitioners in traditional Chinese medicine for rapid constitution determination.

15.
Angew Chem Int Ed Engl ; : e202412754, 2024 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-39219249

RESUMEN

Acidic CO2 electrolysis offers a promising strategy to achieve high carbon utilization and high energy efficiency. However, challenges remain in suppressing the competitive hydrogen evolution reaction (HER) and improving product selectivity. High concentrations of potassium ions (K+) can suppress HER and accelerate CO2 reduction, but they still inevitably suffer from salt precipitation problems. In this study, we demonstrate that the sulfonate-based polyelectrolyte, polystyrene sulfonate (PSS), enables to reconstruct the electrode-electrolyte interface to significantly enhance the acidic CO2 electrolysis. Mechanistic studies reveal that PSS induces high local K+ concentrations through electrostatic interaction between PSS anions and K+. In situ spectroscopy reveals that PSS reshapes the interfacial hydrogen-bond (H-bond) network, which is attributed to the H-bonds between PSS anions and hydrated proton as well as the steric hindrance of the additive molecules. This greatly weakens proton transfer kinetics and leads to the suppression of undesirable HER. As a result, a Faradaic efficiency of 93.9% for CO can be achieved at 250 mA cm-2, simultaneous with a high single-pass carbon efficiency of 72.2% on commercial Ag catalysts in acid. This study highlights the important role of the electrode-electrolyte interface induced by polyelectrolyte additives in promoting electrocatalytic reactions.

16.
Angew Chem Int Ed Engl ; : e202409965, 2024 Sep 02.
Artículo en Inglés | MEDLINE | ID: mdl-39221479

RESUMEN

Li-O2 batteries (LOBs) have gained widespread recognition for their exceptional energy densities. However, a major challenge faced by LOBs is the lack of appropriate electrolytes that can effectively balance reactant transport, interfacial compatibility, and non-volatility. To address this issue, a novel supramolecular deep eutectic electrolyte (DEE) has been developed, based on synergistic interaction between Li-bonds and H-bonds through a combination of lithium salt (LiTFSI), acetamide (Ace) and boric acid (BA). The incorporation of BA serves as an interface modification additive, acting as both Li-bonds acceptor and H-bonds donor/acceptor, thereby enhancing the redox stability of the electrolyte, facilitating a solution phase discharge process and improving compatibility with the Li anode. Our proposed DEE demonstrates a high oxidation voltage of 4.5 V, an ultrahigh discharge capacity of 15225 mAh g-1 and stable cycling performance of 196 cycles in LOBs. Additionally, the intrinsic non-flammability and successful operation of a Li-O2 pouch cell indicate promising practical applications of this electrolyte. This research broadens the design possibilities for LOBs electrolytes and provides theoretical insights for future studies.

17.
J Hazard Mater ; 478: 135428, 2024 Oct 05.
Artículo en Inglés | MEDLINE | ID: mdl-39137544

RESUMEN

Human health risks from particles with a diameter of less than 2.5 µm (PM2.5) highlight the role of urban trees as bio-filters in air pollution control. However, whether the size and composition of particles captured by various tree species differ or not remain unclear. This study investigates how leaf attributes affect the capture of PM2.5, which can penetrate deep into the lungs and pose significant health risks. Using a self-developed particulate matter (PM) resuspension chamber and single-particle aerosol mass spectrometer, we measured the size distribution and mass spectra of particles captured by ten tree species. Notably, Cinnamomum camphora (L.) J.Presl and Osmanthus fragrans Lour. are more effective at capturing particles under 1 µm, which are most harmful because they can reach the alveoli, whereas Ginkgo biloba L. and Platanus × acerifolia (Aiton) Willd. tend to capture larger particles, up to 1.6 µm, which are prone to being trapped in the upper respiratory tract. Leaf physiological traits such as stomatal conductance and water potential significantly enhance the capture of larger particles. The Adaptive Resonance Theory neural network (ART-2a) algorithm classified a large number of single particles to determine their composition. Results indicate distinct inter-species variations in chemical composition of particles captured by leaves. Moreover, we identified how specific leaf wax compositions-beyond the known sticky nature of hydrophobic waxes-contribute to particle adhesion, particularly highlighting the roles of fatty acids and alkanes in adhering particles rich in organic carbon and heavy metals, respectively. This research advances our understanding by linking leaf physiological and wax characteristics to the selective capture of PM2.5, providing actionable insights for urban forestry management. The detailed exploration of particle size and composition, tied to specific tree species, enriches the current literature by quantifying how and why different species contribute variably to air quality improvement. This adds a crucial layer of specificity to the general knowledge that trees serve as bio-filters, offering a refined strategy for planting urban trees based on their particulate capture profiles.


Asunto(s)
Contaminantes Atmosféricos , Tamaño de la Partícula , Material Particulado , Hojas de la Planta , Árboles , Ceras , Material Particulado/análisis , Material Particulado/química , Hojas de la Planta/química , Ceras/química , Contaminantes Atmosféricos/análisis , Contaminantes Atmosféricos/química , Ciudades , Contaminación del Aire/análisis , Redes Neurales de la Computación
18.
Neuroimage ; 298: 120787, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39147293

RESUMEN

Evidence from epidemiological studies suggests that hearing loss is associated with an accelerated decline in cognitive function, but the underlying pathophysiological mechanism remains poorly understood. Studies using auditory tasks have suggested that degraded auditory input increases the cognitive load for auditory perceptual processing and thereby reduces the resources available for other cognitive tasks. Attention-related networks are among the systems overrecruited to support degraded auditory perception, but it is unclear how they function when no excessive recruitment of cognitive resources for auditory processing is needed. Here, we implemented an EEG study using a nonauditory visual attentional selection task in 30 individuals with age-related hearing loss (ARHLs, 60-73 years) and compared them with aged (N = 30, 60-70 years) and young (N = 35, 22-29 years) normal-hearing controls. Compared with their normal-hearing peers, ARHLs demonstrated a significant amplitude reduction for the posterior contralateral N2 component, which is a well-validated index of the allocation of selective visual attention, despite the comparable behavioral performance. Furthermore, the amplitudes were observed to correlate significantly with hearing acuities (pure tone audiometry thresholds) and higher-order hearing abilities (speech-in-noise thresholds) in aged individuals. The target-elicited alpha lateralization, another mechanism of visuospatial attention, demonstrated in control groups was not observed in ARHLs. Although behavioral performance is comparable, the significant decrease in N2pc amplitude in ARHLs provides neurophysiologic evidence that may suggest a visual attentional deficit in ARHLs even without extra-recruitment of cognitive resources by auditory processing. It supports the hypothesis that constant degraded auditory input in ARHLs has an adverse impact on the function of cognitive control systems, which is a possible mechanism mediating the relationship between hearing loss and cognitive decline.


Asunto(s)
Atención , Electroencefalografía , Presbiacusia , Percepción Visual , Humanos , Persona de Mediana Edad , Atención/fisiología , Masculino , Femenino , Anciano , Adulto , Percepción Visual/fisiología , Adulto Joven , Presbiacusia/fisiopatología , Envejecimiento/fisiología , Percepción Auditiva/fisiología
19.
Int J Oncol ; 65(4)2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39155873

RESUMEN

Following the publication of the above article, a concerned reader drew to the authors' attention that, among Figs. 1D, 2A and 4B, certain of the control western blots had been re­used in different blots. The authors have retrieved and re­examined their original data, and were able to identify the correct control western blots where the data had been inadvertently duplicated in the affected original figures. The revised versions of Figs. 2 and 4, now featuring the correct control western blots, are shown in the subsequent two pages. The authors regret that the data in question featured in the original article had been re­used, and thank the Editor of International Journal of Oncology for granting them the opportunity to publish this corrigendum. All the authors agree with the publication of this corrigendum; furthermore, they apologize to the readership of the journal for any inconvenience caused. [International Journal of Oncology 46: 1205­1213, 2015; DOI: 10.3892/ijo.2014.2800].

20.
ACS Appl Mater Interfaces ; 16(35): 46690-46702, 2024 Sep 04.
Artículo en Inglés | MEDLINE | ID: mdl-39165173

RESUMEN

The development of nontoxic antifouling coatings in static marine environments is urgent. Herein, the successful synthesis of sulfobetaine borneol fluorinated polymers (PEASBF) by a free radical polymerization method is reported. The PEASBF coatings exhibit outstanding antifouling activity, which effectively resists the adhesion of Bovine serum albumin (FITC-BSA adhesion rate: 0.5%), Pseudomonas sp. (Biofilm: 1.3 absorbance) and Navicula sp. (Diatom attachment rate: 33%). More importantly, the PEASBF coatings display outstanding fouling release properties, achieving a release rate of 98% for Navicula sp., and the absorbance of the Pseudomonas sp. biofilm is only 0.2 under 10 Pa shear stress. XPS and MD studies showed that the fluorinated/isobornyl groups induce more sulfobetaine groups to migrate toward polymer surfaces for intensify antifouling. Additionally, the chiral stereochemical structure of borneol enhances antifouling and fouling release ability of amphiphilic polymers. Therefore, the PEASBF has the potential for static marine antifouling applications.


Asunto(s)
Incrustaciones Biológicas , Canfanos , Polímeros , Incrustaciones Biológicas/prevención & control , Canfanos/química , Canfanos/farmacología , Polímeros/química , Polímeros/farmacología , Biopelículas/efectos de los fármacos , Animales , Pseudomonas/efectos de los fármacos , Betaína/química , Betaína/análogos & derivados , Betaína/farmacología , Albúmina Sérica Bovina/química , Diatomeas/efectos de los fármacos , Diatomeas/química , Tensoactivos/química , Tensoactivos/farmacología , Tensoactivos/síntesis química , Halogenación , Propiedades de Superficie
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