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1.
Comput Biol Med ; 182: 109106, 2024 Sep 05.
Artículo en Inglés | MEDLINE | ID: mdl-39241326

RESUMEN

Learning using privileged information (LUPI) has shown its effectiveness to improve the B-mode ultrasound (BUS) based computer-aided diagnosis (CAD) by transferring knowledge from the elasticity ultrasound (EUS). However, LUPI only performs transfer learning between the paired data with shared labels, and cannot handle the scenario of modality imbalance. In order to conduct the supervised transfer learning between the paired ultrasound data together with the additional single-modal BUS images, a novel multi-view LUPI algorithm with Dual-Level Modality Completion, named DLMC-LUPI, is proposed to improve the performance of BUS-based CAD. The DLMC-LUPI implements both image-level and feature-level (dual-level) completions of missing EUS modality, and then performs multi-view LUPI for knowledge transfer. Specifically, in the dual-level modality completion stage, a variational autoencoder (VAE) model for feature generation and a novel generative adversarial network (VAE-based GAN) model for image generation are sequentially trained. The proposed VAE-based GAN can improve the synthesis quality of EUS images by adopting the features generated by VAE from the BUS images as the model constrain to make the features generated from the synthesized EUS images more similar to them. In the multi-view LUPI stage, two feature vectors are generated from the real or pseudo images as two source domains, and then fed them to the multi-view support vector machine plus classifier for model training. The experiments on two ultrasound datasets indicate that the DLMC-LUPI outperforms all the compared algorithms, and it can effectively improve the performance of single-modal BUS-based CAD.

2.
Vet Microbiol ; 298: 110239, 2024 Sep 03.
Artículo en Inglés | MEDLINE | ID: mdl-39243670

RESUMEN

African swine fever (ASF), a highly infectious and devastating disease affecting both domestic pigs and wild boars, owes its etiology to African swine fever virus (ASFV). ASFV encodes more than 165 proteins. However, novel immunogenic proteins remain unknown. This study aimed to determine the antigenicity of the F317L protein (pF317L) of ASFV. The results revealed that pF317L was able to react with convalescent pig sera, indicating that pF317L could be a candidate antigen. The antigenic potential of pF317L expressed by rHCLV-F317L, a recombinant virus in the backbone of C-strain (a lapinized live attenuated classical swine fever virus) was further investigated in rabbits and pigs. The results revealed that antibodies and cell-mediated immune responses against pF317L were induced in either rabbits or pigs inoculated with rHCLV-F317L. Importantly, anti-pF317L antibodies from rabbits or pigs immunized with rHCLV-F317L significantly inhibited ASFV replication in vitro. In conclusion, pF317L demonstrates favorable immunogenic properties, positioning it as a promising candidate for the development of protective antigens in the ongoing endeavor to formulate efficacious ASF vaccine strategies.

3.
bioRxiv ; 2024 Aug 26.
Artículo en Inglés | MEDLINE | ID: mdl-39253491

RESUMEN

Background: Bryant-Li-Bhoj neurodevelopmental syndrome (BLBS) is neurogenetic disorder caused by variants in H3-3A and H3-3B, the two genes that encode the histone H3.3 protein. Ninety-nine percent of individuals with BLBS show developmental delay/intellectual disability, but the mechanism by which variants in H3.3 result in these phenotypes is not yet understood. As a result, only palliative interventions are available to individuals living with BLBS. Methods: Here, we investigate how one BLBS-causative variant, H3-3B p.Leu48Arg (L48R), affects neurodevelopment using an induced pluripotent stem cell (iPSC) model differentiated to 2D neural progenitor cells (NPCs), 2D forebrain neurons (FBNs), and 3D dorsal forebrain organoids (DFBOs). We employ a multi-omic approach in the 2D models to quantify the resulting changes in gene expression and chromatin accessibility. We used immunofluorescence (IF) staining to define the identities of cells in the 3D DFBOs. Results: In the 2D systems, we found dysregulation of both gene expression and chromatin accessibility of genes important for neuronal fate, maturation, and function in H3.3 L48R compared to control. Our work in 3D organoids corroborates these findings, demonstrating altered proportions of radial glia and mature neuronal cells. Conclusions: These data provide the first mechanistic insights into the pathogenesis of BLBS from a human-derived model of neurodevelopment, which suggest that the L48R increases H3-3B expression, resulting in the hyper-deposition of H3.3 into the nucleosome which underlies changes in gene expression and chromatin accessibility. Functionally, this causes dysregulation of cell adhesion, neurotransmission, and the balance between excitatory and inhibitory signaling. These results are a crucial step towards preclinical development and testing of targeted therapies for this and related disorders.

4.
J Integr Plant Biol ; 2024 Sep 10.
Artículo en Inglés | MEDLINE | ID: mdl-39254487

RESUMEN

The utilization of metabolomics approaches to explore the metabolic mechanisms underlying plant fitness and adaptation to dynamic environments is growing, highlighting the need for an efficient and user-friendly toolkit tailored for analyzing the extensive datasets generated by metabolomics studies. Current protocols for metabolome data analysis often struggle with handling large-scale datasets or require programming skills. To address this, we present MetMiner (https://github.com/ShawnWx2019/MetMiner), a user-friendly, full-functionality pipeline specifically designed for plant metabolomics data analysis. Built on R shiny, MetMiner can be deployed on servers to utilize additional computational resources for processing large-scale datasets. MetMiner ensures transparency, traceability, and reproducibility throughout the analytical process. Its intuitive interface provides robust data interaction and graphical capabilities, enabling users without prior programming skills to engage deeply in data analysis. Additionally, we constructed and integrated a plant-specific mass spectrometry database into the MetMiner pipeline to optimize metabolite annotation. We have also developed MDAtoolkits, which include a complete set of tools for statistical analysis, metabolite classification, and enrichment analysis, to facilitate the mining of biological meaning from the datasets. Moreover, we propose an iterative weighted gene co-expression network analysis strategy for efficient biomarker metabolite screening in large-scale metabolomics data mining. In two case studies, we validated MetMiner's efficiency in data mining and robustness in metabolite annotation. Together, the MetMiner pipeline represents a promising solution for plant metabolomics analysis, providing a valuable tool for the scientific community to use with ease.

5.
Eur J Public Health ; 2024 Sep 10.
Artículo en Inglés | MEDLINE | ID: mdl-39254527

RESUMEN

With the acceleration of population aging, disability in older adults is a growing public health problem; however, little is known about the role of specific leisure-time activities in affecting disability. This study prospectively examined the association of leisure-time activities with disability among the Chinese oldest old. A total of 14 039 adults aged 80 years or older (median age of 89.8 years) were enrolled from the Chinese Longitudinal Healthy Longevity Survey from 1998 to 2014. Disability was defined as the presence of concurrent impairment in activities of daily living and physical performance. Cox proportional hazards models were used to estimate the associations between leisure-time activities and disability. During a mean of 4.2 years (2.7 years) of follow-up, 4487 participants developed disability. Compared with participants who never engaged in leisure-time activities, participants who engaged in almost daily activities, including gardening, keeping domestic animals or pets, playing cards or mahjong, reading books or newspapers, and watching TV or listening to the radio had a lower risk of disability, with HRs of 0.78 (0.69-0.88), 0.64 (0.58-0.70), 0.74 (0.63-0.86), 0.74 (0.65-0.84), and 0.84 (0.77-0.90), respectively. Moreover, the risk of disability gradually decreased with participation in an increasing number of those leisure-time activities (P for trend <0.001). Frequent engagement in leisure-time activities was associated with a lower risk of disability among the Chinese oldest old. This study highlights the importance of incorporating a broad range of leisure-time activities into the daily lives of older adults.

6.
Artículo en Inglés | MEDLINE | ID: mdl-39246141

RESUMEN

Human tissue-resident memory T (TRM) cells play a crucial role in protecting the body from infections and cancers. Recent research observed increased numbers of TRM cells in the lung tissues of idiopathic pulmonary fibrosis patient. However, the functional consequences of TRM cells in pulmonary fibrosis remain unclear. Here, we found that the numbers of TRM cells, especially the CD8+ subset, were increased in the mouse lung with bleomycin-induced pulmonary fibrosis. Increasing or decreasing CD8+ TRM cells in mouse lungs accordingly altered the severity of fibrosis. In addition, adoptive transfer of CD8+ T cells containing a large number of CD8+ TRM cells from fibrotic lungs was sufficient to induce pulmonary fibrosis in control mice. Treatment with CCL18 to induced CD8+ TRM cell expansion and exacerbated fibrosis, while blocking CCR8 prevented CD8+ TRM recruitment and inhibited pulmonary fibrosis. In conclusion, CD8+ TRM cells are essential for bleomycin-induced pulmonary fibrosis, and targeting CCL18/CCR8/CD8+ TRM cells may be a potential therapeutic approach.

7.
J Imaging Inform Med ; 2024 Sep 05.
Artículo en Inglés | MEDLINE | ID: mdl-39237837

RESUMEN

To investigate the feasibility of predicting rectal adenocarcinoma (RA) tumor (T) and node (N) staging from an optimal ROI measurement using amide proton transfer weighted-signal intensity (APTw-SI) and magnetization transfer (MT) derived from three-dimensional chemical exchange saturation transfer(3D-CEST). Fifty-eight RA patients with pathological TN staging underwent 3D-CEST and DWI. APTw-SI, MT, and ADC values were measured using three ROI approaches (ss-ROI, ts-ROI, and wt-ROI) to analyze the TN staging (T staging, T1-2 vs T3-4; N staging, N - vs N +); the reproducibility of APTw-SI and MT was also evaluated. The AUC was used to assess the staging performance and determine the optimal ROI strategy. MT and APTw-SI yielded good excellent reproducibility with three ROIs, respectively. Significant differences in MT were observed (all P < 0.05) from various ROIs but not in APTw-SI and ADC (all P > 0.05) in the TN stage. AUCs of MT from ss-ROI were 0.860 (95% CI, 0.743-0.937) and 0.852 (95% CI, 0.735-0.932) for predicting T and N staging, which is similar to ts-ROI (T staging, 0.856 [95% CI, 0.739-0.934]; N staging, 0.831 [95% CI, 0.710-0.917]) and wt-ROI (T staging, 0.833 [95% CI, 0.712-0.918]; N staging, 0.848 [95% CI, 0.729-0.929]) (all P > 0.05). MT value of 3D-CEST has excellent TN staging predictive performance in RA patients with all three kinds of ROI methods. The ss-ROI is easy to operate and could be served as the preferred ROI approach for clinical and research applications of 3D-CEST imaging.

8.
Ying Yong Sheng Tai Xue Bao ; 35(7): 1988-1996, 2024 Jul 18.
Artículo en Inglés | MEDLINE | ID: mdl-39233429

RESUMEN

Studying the stoichiometric characteristics of soil nutrients aids in evaluating soil quality and deciphering the coupling of soil nutrients. The influence of migratory bird activities on the dynamics of wetland soil nutrients and their stoichiometric remains unclear. We classified the central, peripheral and adjacent natural grassy areas as severe, mild, and no bird activity (control), respectively, in Donghu Carex meadow, a representative migratory bird habitat in Poyang Lake, based on flock characteristics and initial surveys. We analyzed the contents and stoichio-metry of soil organic carbon (SOC), total nitrogen (TN), and total phosphorus (TP) across soil depths of 0-100 cm under different intensities of migratory bird activities. The results showed that the activities of migratory birds significantly impacted nutrient levels exclusively within 0-30 cm soil. Mild activities markedly enhanced SOC and TN across 0-30 cm soil, while both mild and severe activities significantly raised TP within the same depth. For the 0-100 cm soil profiles, soil C/N ratios were 10.0, 10.8, and 9.9, C/P ratios were 23.5, 30.0, and 22.7, and N/P ratios were 2.3, 2.7, and 2.3 under no, mild, and severe bird activities, respectively. Further, mild activities of migratory birds significantly increased soil C/N, C/P and N/P ratios only within the 0-30 cm depth, while the stoichiometric ratios of all soil layer had no significant difference under severe bird activity. Soil stoichiometric ratios strongly correlated with physicochemical properties. SOC, TN, and TP primarily mediated the effects of migratory bird activity on soil carbon, nitrogen, and phosphorus stoichiometric ratios in Poyang Lake wetland. In conclusion, the influence of migratory bird activity on the stoichiometric ratios of soil carbon, nitrogen, and phosphorus in Poyang Lake wetland exhibited depth threshold (approximately 30 cm), aligning with the "Intermediate Distur-bance Hypothesis". These findings could provide a new perspective for the protection of wetlands and migratory birds.


Asunto(s)
Migración Animal , Aves , Carbono , Lagos , Nitrógeno , Fósforo , Suelo , Humedales , Animales , Fósforo/análisis , Nitrógeno/análisis , Suelo/química , China , Carbono/análisis , Lagos/química , Carex (Planta)/crecimiento & desarrollo , Carex (Planta)/metabolismo , Monitoreo del Ambiente , Ecosistema
9.
J Fish Biol ; 2024 Sep 05.
Artículo en Inglés | MEDLINE | ID: mdl-39235098

RESUMEN

In fish species, there is limited analysis of signature transcriptome profiles at the single-cell level in gonadal cells. Here, the molecular signatures of distinct ovarian cell categories in adult Nile tilapia (Oreochromis niloticus) were analysed using single-nucleus RNA sequencing (snRNA-seq). We identified four cell types (oogonia, oocytes, granulosa cell, and thecal cell) based on their specifically expressed genes and biological functions. Similarly, we found some key pathways involved in ovarian development that may affect germline-somatic interactions. A cell-to-cell communication network between the distinct cell types was constructed. We found that the bidirectional communication is mandatory for the development of germ cells and somatic cells in fish ovaries, and the granulosa cells and thecal cells play a central regulating role in the cell network in fish ovary. Additionally, we identified some novel candidate marker genes for various types of ovarian cells and also validated them using in situ hybridization. Our work reveals an ovarian atlas at the cellular and molecular levels and contributes to providing insights into oogenesis and gonad development in fish.

10.
Zhongguo Yi Xue Ke Xue Yuan Xue Bao ; 46(4): 482-489, 2024 Aug.
Artículo en Chino | MEDLINE | ID: mdl-39223012

RESUMEN

Objective To investigate the effects of pterostilbene on human colon cancer LoVo cells and study the regulatory mechanism of nuclear factor E2-related factor 2 (Nrf2) in the process of pterostilbene acting on LoVo cells. Methods LoVo cells were treated with different concentrations (5,10,20,40,60,80,100 µmol/L) of pterostilbene.Cell viability,migration,invasion,and apoptosis were examined by CCK-8,scratch,Transwell,and TUNEL assays,respectively.The mitochondrial membrane potential was measured by the mitochondrial membrane potential assay kit with JC-1.The reactive oxygen species level was measured by 2',7'-dichlorofluorescein diacetate.The protein levels of Nrf2,phosphorylated Nrf2,heme oxygenase 1,and apoptotic proteins (Bcl2 and Bax) were determined by Western blotting.In addition,cell viability,Nrf2 expression,and apoptosis rate were determined after co-application of the Nrf2-specific agonist sulforaphane. Results Compared with the control group,40,60,80,100 µmol/L pterostilbene reduced the viability of LoVo cells (P=0.014,P<0.001,P<0.001,P<0.001).Pterostilbene at 5,10,20 µmol/L did not show effects on cell viability but inhibited cell migration (P=0.008,P<0.001,P<0.001) and invasion (all P<0.001).Pterostilbene at 40,60,80 µmol/L increased apoptosis (P=0.014,P<0.001,P<0.001),promoted mitochondrial membrane potential depolarization (P=0.026,P<0.001,P<0.001) and reactive oxygen species accumulation (all P<0.001),and down-regulated the expression of phosphorylated Nrf2 (P=0.030,P<0.001,P<0.001),heme oxygenase 1 (P=0.015,P<0.001,P<0.001),and Bcl2 (P=0.039,P<0.001,P<0.001) in LoVo cells.Pterostilbene at 60,80 µmol/L down-regulated Nrf2 expression (P=0.001,P<0.001) and up-regulated Bax expression (both P<0.001).The application of sulforaphane reversed the effects of pterostilbene on cell viability (P<0.001),apoptosis (P<0.001),and Nrf2 expression (P=0.022). Conclusion Pterostilbene is a compound that can effectively inhibit colon cancer cells by inhibiting the Nrf2 pathway.


Asunto(s)
Apoptosis , Neoplasias del Colon , Factor 2 Relacionado con NF-E2 , Estilbenos , Humanos , Estilbenos/farmacología , Apoptosis/efectos de los fármacos , Factor 2 Relacionado con NF-E2/metabolismo , Neoplasias del Colon/metabolismo , Neoplasias del Colon/patología , Neoplasias del Colon/tratamiento farmacológico , Línea Celular Tumoral , Especies Reactivas de Oxígeno/metabolismo , Potencial de la Membrana Mitocondrial/efectos de los fármacos , Proteínas Proto-Oncogénicas c-bcl-2/metabolismo , Proteína X Asociada a bcl-2/metabolismo
11.
Artículo en Inglés | MEDLINE | ID: mdl-39226427

RESUMEN

A new three-dimensional (3D) coordination polymer, namely, poly[diaqua[µ5-2,2'-(1,3,5,7-tetraoxo-1,2,3,5,6,7-hexahydropyrrolo[3,4-f]isoindole-2,6-diyl)diacetato]barium(II)], [Ba(C14H6N2O8)(H2O)2]n, (I), has been synthesized by the microwave-irradiated reaction of Ba(NO3)2 with N,N'-bis(glycinyl)pyromellitic diimide {BGPD, namely, 2,2'-(1,3,5,7-tetraoxo-1,2,3,5,6,7-hexahydropyrrolo[3,4-f]isoindole-2,6-diyl)diacetatic acid, H2L}. The title compound was structurally characterized by single-crystal X-ray diffraction analysis and powder X-ray diffraction analysis, as well as IR spectroscopy. In the crystal structure of (I), the BaII ion is nine-coordinated by six carboxylate O atoms from five symmetry-related L2- dianions and one imide O atom, as well as two water O atoms. The coordination geometry of the central BaII ion can be described as a spherical capped square antiprism. One carboxylate group of the ligand serves as a µ3-bridge linking the BaII cations into a one-dimensional polynuclear secondary building unit (SBU). Another carboxylate group of the ligand acts as a µ2-bridge connecting the 1D SBUs, thereby forming a two-dimensional (2D) SBU. The resulting 2D SBUs are extended into a 3D framework via the pyromellitic diimide moiety of the ligand as a spacer. The 3D Ba framework can be simplified as a 5-connected hexagonal boron nitride net (bnn) topology. The intermolecular interactions in the 3D framework were further investigated by Hirshfeld surface analysis and the results show that the prominent interactions are H...O (45.1%), Ba...O (11.1%) and C...H (11.1%), as well as H...H (11.1%) contacts. The thermal stability, photoluminescence properties and UV-Vis absorption spectra of (I) were also investigated. The coordination polymer exhibits a fluorescence emission with a quantum yield of 0.071 and high thermal stability.

12.
Artículo en Inglés | MEDLINE | ID: mdl-39223992

RESUMEN

BACKGROUND: Rotational atherectomy (RA) remains an integral tool for the treatment of severe coronary calcified lesions despite emergence of newer techniques. We aimed to evaluate the contemporary clinical practices and outcomes of RA in China. METHODS: The Rota China Registry (NCT03806621) was an investigator-initiated, prospective, multicenter registry based on China Rota Elite Group. Consecutive patients treated with RA were recruited. A pre-designed, standardized protocol was recommended for the RA procedure. The primary safety endpoint was major adverse cardiovascular events (MACE: composite of cardiac death, myocardial infarction, or ischemia-driven target lesion revascularization) at 30 days. The primary efficacy endpoint was procedural success. RESULTS: Between July 2018 and December 2020, 980 patients were enrolled at 19 sites in China. Mean patient age was 68.4 years, and 61.4% were men. Radial access was used in 79.1% patients, and 32.7% procedures were guided by intravascular imaging. A total of 22.6% procedures used more than 1 burr, and the maximal burr size was ≥1.75 mm in 24.4% cases, with burr upsizing in 19.3% cases, achieving a final burr-to-artery ratio of 0.52. Procedural success was achieved in 91.1% of patients, and the rate of 30-day and 1-year MACE was 4.9% and 8.2%, respectively. Multivariable analysis identified the total lesion length (HR 1.014, 95% CI: 1.002-1.027; p = 0.021) as predictor of 30-day MACE, and renal insufficiency (HR 1.916, 95% CI: 1.073-3.420; p = 0.028) as predictor of 1-year MACE. CONCLUSIONS: In this contemporary prospective registry in China, the use of RA was effective in achieving high procedural success rate with good short- and long-term outcomes in patients with severely calcified lesions.

13.
Phys Chem Chem Phys ; 2024 Sep 03.
Artículo en Inglés | MEDLINE | ID: mdl-39224059

RESUMEN

We conducted a theoretical investigation on the modulation of plasmon-like resonances in naphthalene - the so-called molecular plasmons - through intermolecular interactions and strong light-matter coupling. The configuration interaction with single excitations (CIS) approach and its quantum electrodynamics extension (QED-CIS-1) are used to describe the molecular plasmon states under these interactions. We detail the effects of changing intermolecular distances of the naphthalene dimer and incorporating the naphthalene molecule into optical cavities, both allowing for precise control of naphthalene's plasmonic responses. Our results show significant shifts of the plasmon peak in the absorption spectra of naphthalene, depending on the spatial configuration of the dimer and cavity parameters such as polarization, frequency, and coupling strength. Further investigation of the naphthalene dimer in a cavity reveals a synergistic effect on the plasmon peak when the two types of interactions are combined. This research provides insights into the plasmonic behavior of simple polyacenes like naphthalene and opens up possibilities for plasmon modulation in more complex systems.

15.
World J Gastrointest Surg ; 16(8): 2702-2718, 2024 Aug 27.
Artículo en Inglés | MEDLINE | ID: mdl-39220083

RESUMEN

BACKGROUND: Peutz-Jeghers syndrome (PJS) has brought significant physical, psychological and economic burdens on the patients and their families due to its early onset, diagnostic and therapeutic challenges and increased recurrence risk. AIM: To explore the current research status and emerging hotspots of PJS. METHODS: Studies on PJS published during 1994-2023 were gathered based on Web of Science Core Collection. Additionally, a case of PJS-induced intestinal intussusception, successfully treated with endoscopic methods despite three laparotomies, was highlighted. Comprehensive bibliometric and visual analysis were conducted with VOSviewer, R and CiteSpace. RESULTS: Altogether 1760 studies were identified, indicating a steady increase in the publication number. The United States had the highest influence, whereas the University of Helsinki emerged as the leading institution, and Aaltonen LA from the University of Helsinki was the most prolific author. Cancer Research, Oncogene and Endoscopy were the top three journals based on H-index. Keyword burst direction analysis revealed that "cancer risk", "management", "surveillance" and "familial pancreatic cancer" were the potential hotspots for investigation. Additionally, "early detection", "capsule endoscopy", "clinical management", "double-balloon endoscopy", "familial pancreatic cancer" and "molecular genetic basis" were identified as the key clusters of co-cited references. Endoscopic polypectomy remained effective on resolving intestinal intussusception in patients who underwent three previous laparotomies. CONCLUSION: In the last three decades, global publications related to PJS show a steadily increasing trend in number. Endoscopic management is currently a research hotspot.

16.
Neurosci Bull ; 2024 Sep 16.
Artículo en Inglés | MEDLINE | ID: mdl-39283564

RESUMEN

Sleep-wake disorder is one of the most common nonmotor symptoms of Parkinson's disease (PD). Melatonin has the potential to improve sleep-wake disorder, but its mechanism of action is still unclear. Our data showed that melatonin only improved the motor and sleep-wake behavior of a zebrafish PD model when melatonin receptor 1 was present. Thus, we explored the underlying mechanisms by applying a rotenone model. After the PD zebrafish model was induced by 10 nmol/L rotenone, the motor and sleep-wake behavior were assessed. In situ hybridization and real-time quantitative PCR were used to detect the expression of melatonin receptors and lipid-metabolism-related genes. In the PD model, we found abnormal lipid metabolism, which was reversed by melatonin. This may be one of the main pathways for improving PD sleep-wake disorder.

17.
Acta Pharmacol Sin ; 2024 Sep 16.
Artículo en Inglés | MEDLINE | ID: mdl-39284878

RESUMEN

Chronic itch is a maladaptive and debilitating symptom in patients with allergic contact dermatitis (ACD), adversely affecting their quality of life. There is a lack of effective treatments for ACD-associated uncontrollable itch. In this study, we explored the antipruritic effects of baicalein (BE), a bioactive flavonoid extracted from the root of Scutellaria baicalensis Georgi, and the underlying mechanisms in alleviating chronic itch triggered by diphenylcyclopropenone (DCP) in a mouse model of ACD. The ACD mice were intraperitoneally injected with BE (5, 30, and 60 mg·kg-1·d-1) for 7 days during the DCP challenge phase. The results showed that DCP-treated mice exhibited severe spontaneous scratching behaviors that was reduced after BE injections in a dose-dependent manner accompanied by inhibition of spinal astrocyte activation. We observed that the spinal astrocytic STAT3-LCN2 cascade plays a crucial role in controlling the activation of astrocytes in chronic itch. Intrathecal injection of the STAT3 inhibitor AG490 or Lcn2 siRNA significantly reduced scratching behavior and astrocyte activation in ACD mice. Moreover, BE markedly attenuated the increased phosphorylation of STAT3 (p-STAT3) and LCN2 expression in the spinal cords of ACD mice and in lipopolysaccharide-stimulated primary spinal astrocytes. Altogether, BE relieved chronic itch by suppressing the spinal astrocytic STAT3-LCN2 cascade. These findings provide a potential avenue for the management of chronic itch. Schematic summary of the main findings illustrating that BE alleviates chronic itch through suppressing the spinal astrocytic STAT3-LCN2 cascade. Specifically, BE suppresses the expression of p-STAT3 to inhibit the reactive state of astrocytes in spinal dorsal horn, and then decreases the expression of astrocytic LCN2 to alleviate chronic itch in ACD mice.

19.
J Multidiscip Healthc ; 17: 4373-4382, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39262823

RESUMEN

Purpose: To investigate and analyse the status quo of the self-management of patients living with HIV/AIDS (PLWHA) and its influencing factors and to provide the basis for formulating intervention strategies. Methods: In this cross-sectional study, 300 PLWHA who visited the Infection Center of Beijing Youan Hospital, Capital Medical University between September 2021 and December 2021 were enrolled using the convenience sampling method. Demographic characteristics and disease-related data were collected for each participant. The HIV/AIDS Self-Management Scale was used to evaluate the self-management ability of PLWHA. Results: A total of 251 male and 49 female PLWHA were included in this study, with an average age of 39.08 ± 12.09 years and an average disease duration of 9.61 ± 37.04 months. Univariate analysis showed that the PLWHA's place of residence, educational level, physical condition, family relations, duration of HIV disease, receipt or not of antiviral therapy and knowledge of disease had an influence on the scores of the HIV Self-Management Scale (all p < 0.05). The results of the self-management scores indicated that the total score for self-management was 41.5 ± 6.4 points, with a scoring rate of 69.6%, which was at a medium level. Long-term self-management had the highest scoring rate (12.2 ± 2.5 points), followed by daily health management (22.3 ± 4.3 points), and social support for self-management had the lowest scoring (5.1 ± 0.9 points). Multivariable analysis showed that the self-management ability of PLWHA was related to educational level, duration of disease and family relations (R2 = 0.67, F = 121.7, p < 0.05). Conclusion: The self-management level of patients with AIDS, especially the social support of daily health management and self-management, needs to be further improved. Educational level, duration of disease and family relations are important factors influencing the self-management of PLWHA.

20.
PLoS Genet ; 20(9): e1011393, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39264939

RESUMEN

Holometabolous insects undergo morphological remodeling from larvae to pupae and to adults with typical changes in the cuticle; however, the mechanism is unclear. Using the lepidopteran agricultural insect Helicoverpa armigera, cotton bollworm, as a model, we revealed that the transcription factor RUNT-like (encoded by Runt-like) regulates the development of the pupal cuticle via promoting a pupal cuticle protein gene (HaPcp) expression. The HaPcp was highly expressed in the epidermis and wing during metamorphosis and was found being involved in pupal cuticle development by RNA interference (RNAi) analysis in larvae. Runt-like was also strongly upregulated in the epidermis and wing during metamorphosis. Knockdown of Runt-like produced similar phenomena, a failure of abdomen yellow envelope and wing formation, to those following HaPcp knockdown. The insect molting hormone 20-hydroxyecdysonen (20E) upregulated HaPcp transcription via RUNT-like. 20E upregulated Runt-like transcription via nuclear receptor EcR and the transcription factor FOXO. Together, RUNT-like and HaPCP are involved in pupal cuticle development during metamorphosis under 20E regulation.


Asunto(s)
Regulación del Desarrollo de la Expresión Génica , Proteínas de Insectos , Metamorfosis Biológica , Pupa , Animales , Pupa/crecimiento & desarrollo , Pupa/genética , Pupa/metabolismo , Proteínas de Insectos/genética , Proteínas de Insectos/metabolismo , Metamorfosis Biológica/genética , Larva/crecimiento & desarrollo , Larva/genética , Larva/metabolismo , Alas de Animales/crecimiento & desarrollo , Alas de Animales/metabolismo , Ecdisterona/metabolismo , Interferencia de ARN , Mariposas Nocturnas/crecimiento & desarrollo , Mariposas Nocturnas/genética , Mariposas Nocturnas/metabolismo , Factores de Transcripción/genética , Factores de Transcripción/metabolismo , Epidermis/metabolismo , Epidermis/crecimiento & desarrollo , Muda/genética
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