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1.
Trends Genet ; 39(4): 320-333, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36681580

RESUMEN

Studies using highly sensitive targeted RNA enrichment methods have shown that a large portion of the human transcriptome remains to be discovered and that most of the genome is transcribed in a complex, interleaved fashion characterized by a complex web of transcripts emanating from protein coding and noncoding loci. These results resonate with those from single-cell transcriptome profiling endeavors that reveal the existence of multiple novel, cell type-specific transcripts and clearly demonstrate that our understanding of the complexities of the human transcriptome is far from being complete. Here, we review the current status of the targeted RNA enrichment techniques, their application to the discovery of novel cell type-specific transcripts, and their impact on our understanding of the human genome and transcriptome.


Asunto(s)
ARN Largo no Codificante , Transcriptoma , Animales , Humanos , Transcriptoma/genética , ARN/genética , Análisis de Secuencia de ARN/métodos , Perfilación de la Expresión Génica/métodos , Genoma Humano , ARN Largo no Codificante/genética , Mamíferos/genética
2.
Biostatistics ; 25(3): 666-680, 2024 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-38141227

RESUMEN

With rapid development of techniques to measure brain activity and structure, statistical methods for analyzing modern brain-imaging data play an important role in the advancement of science. Imaging data that measure brain function are usually multivariate high-density longitudinal data and are heterogeneous across both imaging sources and subjects, which lead to various statistical and computational challenges. In this article, we propose a group-based method to cluster a collection of multivariate high-density longitudinal data via a Bayesian mixture of smoothing splines. Our method assumes each multivariate high-density longitudinal trajectory is a mixture of multiple components with different mixing weights. Time-independent covariates are assumed to be associated with the mixture components and are incorporated via logistic weights of a mixture-of-experts model. We formulate this approach under a fully Bayesian framework using Gibbs sampling where the number of components is selected based on a deviance information criterion. The proposed method is compared to existing methods via simulation studies and is applied to a study on functional near-infrared spectroscopy, which aims to understand infant emotional reactivity and recovery from stress. The results reveal distinct patterns of brain activity, as well as associations between these patterns and selected covariates.


Asunto(s)
Teorema de Bayes , Humanos , Estudios Longitudinales , Encéfalo/fisiología , Encéfalo/diagnóstico por imagen , Espectroscopía Infrarroja Corta/métodos , Interpretación Estadística de Datos , Modelos Estadísticos , Lactante , Análisis Multivariante , Bioestadística/métodos
3.
EMBO Rep ; 24(9): e55494, 2023 09 06.
Artículo en Inglés | MEDLINE | ID: mdl-37493024

RESUMEN

Human CST (CTC1-STN1-TEN1) is a ssDNA-binding complex that interacts with the replisome to aid in stalled fork rescue. We previously found that CST promotes telomere replication to maintain genomic integrity via G-quadruplex (G4) resolution. However, the detailed mechanism by which CST resolves G4s in vivo and whether additional factors are involved remains unclear. Here, we identify RECQ4 as a novel CST-interacting partner and show that RECQ4 can unwind G4 structures in vitro using a FRET assay. Moreover, G4s accumulate at the telomere after RECQ4 depletion, resulting in telomere dysfunction, including the formation of MTSs, SFEs, and TIFs, suggesting that RECQ4 is crucial for telomere integrity. Furthermore, CST is also required for RECQ4 telomere or chromatin localization in response to G4 stabilizers. RECQ4 is involved in preserving genomic stability by CST and RECQ4 disruption impairs restart of replication forks stalled by G4s. Overall, our findings highlight the essential roles of CST and RECQ4 in resolving G-rich regions, where they collaborate to resolve G4-induced replication deficiencies and maintain genomic homeostasis.


Asunto(s)
Replicación del ADN , G-Cuádruplex , Humanos , Proteínas de Unión a Telómeros/genética , Homeostasis del Telómero , Telómero/metabolismo
4.
Nano Lett ; 24(5): 1717-1728, 2024 Feb 07.
Artículo en Inglés | MEDLINE | ID: mdl-38270376

RESUMEN

Surgery is the primary method to treat malignant melanoma; however, the residual microtumors that cannot be resected completely often trigger tumor recurrence, causing tumor-related mortality following melanoma resection. Herein, we developed a feasible strategy based on the combinational chemoimmunotherapy by cross-linking carboxymethyl chitosan (CMCS)-originated polymetformin (PolyMetCMCS) with cystamine to prepare stimuli-responsive nanogel (PMNG) owing to the disulfide bond in cystamine that can be cleaved by the massive glutathione (GSH) in tumor sites. Then, chemotherapeutic agent doxorubicin (DOX) was loaded in PMNG, which was followed by a hyaluronic acid coating to improve the overall biocompatibility and targeting ability of the prepared nanogel (D@HPMNG). Notably, PMNG effectively reshaped the tumor immune microenvironment by reprogramming tumor-associated macrophage phenotypes and recruiting intratumoral CD8+ T cells owing to the inherited immunomodulatory capability of metformin. Consequently, D@HPMNG treatment remarkably suppressed melanoma growth and inhibited its recurrence after surgical resection, proposing a promising solution for overcoming lethal melanoma recurrence.


Asunto(s)
Melanoma , Polietilenglicoles , Polietileneimina , Humanos , Nanogeles , Macrófagos Asociados a Tumores , Cistamina , Linfocitos T CD8-positivos , Doxorrubicina , Glutatión/química , Microambiente Tumoral , Línea Celular Tumoral
5.
Nano Lett ; 24(22): 6767-6777, 2024 Jun 05.
Artículo en Inglés | MEDLINE | ID: mdl-38771956

RESUMEN

Efforts to prolong the blood circulation time and bypass immune clearance play vital roles in improving the therapeutic efficacy of nanoparticles (NPs). Herein, a multifunctional nanoplatform (BPP@RTL) that precisely targets tumor cells is fabricated by encapsulating ultrasmall phototherapeutic agent black phosphorus quantum dot (BPQD), chemotherapeutic drug paclitaxel (PTX), and immunomodulator PolyMetformin (PM) in hybrid membrane-camouflaged liposomes. Specifically, the hybrid cell membrane coating derived from the fusion of cancer cell membrane and red blood cell membrane displays excellent tumor targeting efficiency and long blood circulation property due to the innate features of both membranes. After collaboration with aPD-L1-based immune checkpoint blockade therapy, a boosted immunotherapeutic effect is obtained due to elevated dendritic cell maturation and T cell activation. Significantly, laser-irradiated BPP@RTL combined with aPD-L1 effectively eliminates primary tumors and inhibits lung metastasis in 4T1 breast tumor model, offering a promising treatment plan to develop personalized antitumor strategy.


Asunto(s)
Inmunoterapia , Paclitaxel , Fósforo , Puntos Cuánticos , Puntos Cuánticos/química , Puntos Cuánticos/uso terapéutico , Animales , Fósforo/química , Ratones , Paclitaxel/química , Paclitaxel/uso terapéutico , Paclitaxel/farmacología , Paclitaxel/administración & dosificación , Femenino , Humanos , Línea Celular Tumoral , Liposomas/química , Nanopartículas/química , Ratones Endogámicos BALB C
6.
Biochem Biophys Res Commun ; 701: 149525, 2024 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-38320423

RESUMEN

Angiogenesis, a finely regulated process, plays a crucial role in the progression of various diseases. Cerebral cavernous malformation 3 (CCM3), alternatively referred to as programmed cell death 10 (PDCD10), stands as a pivotal functional gene with a broad distribution across the human body. However, the precise role of CCM3 in angiogenesis regulation has remained elusive. YAP/TAZ, as core components of the evolutionarily conserved Hippo pathway, have garnered increasing attention as a novel mechanism in angiogenesis regulation. Nonetheless, whether CCM3 regulates angiogenesis through YAP/TAZ mediation has not been comprehensively explored. In this study, our primary focus centers on investigating the regulation of angiogenesis through CCM3 knockdown mediated by YAP/TAZ. Silencing CCM3 significantly enhances the proliferation, migration, and tubular formation of human umbilical vein endothelial cells (HUVECs), thereby promoting angiogenesis. Furthermore, we observe an upregulation in the expression levels of VEGF and VEGFR2 within HUVECs upon silencing CCM3. Mechanistically, the evidence we provide suggests for the first time that endothelial cell CCM3 knockdown induces the activation and nuclear translocation of YAP/TAZ. Finally, we further demonstrate that the YAP/TAZ inhibitor verteporfin can reverse the pro-angiogenic effects of siCCM3, thereby confirming the role of CCM3 in angiogenesis regulation dependent on YAP/TAZ. In summary, our findings pave the way for potential therapeutic targeting of the CCM3-YAP/TAZ signaling axis as a novel approach to promote angiogenesis.


Asunto(s)
Proteínas Adaptadoras Transductoras de Señales , Angiogénesis , Proteínas Reguladoras de la Apoptosis , Proteínas de la Membrana , Proteínas Proto-Oncogénicas , Proteínas Coactivadoras Transcripcionales con Motivo de Unión a PDZ , Proteínas Señalizadoras YAP , Humanos , Proteínas Adaptadoras Transductoras de Señales/metabolismo , Angiogénesis/metabolismo , Células Endoteliales de la Vena Umbilical Humana/metabolismo , Fosfoproteínas/metabolismo , Proteínas Coactivadoras Transcripcionales con Motivo de Unión a PDZ/metabolismo , Proteínas de la Membrana/metabolismo , Proteínas Reguladoras de la Apoptosis/metabolismo , Proteínas Proto-Oncogénicas/metabolismo
7.
Ann Neurol ; 94(5): 942-954, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-37554051

RESUMEN

OBJECTIVE: Peripheral immune markers have been associated with the progression and prognosis of amyotrophic lateral sclerosis (ALS). However, whether dysregulation of peripheral immunity is a risk factor for ALS or a consequence of motor neuron degeneration has not yet been clarified. We aimed to identify longitudinal associations between prediagnostic peripheral immunity and the risk of incident ALS. METHODS: A total of 345,000 individuals from the UK Biobank between 2006 and 2010 were included at the baseline. The counts of peripheral immune markers (neutrophils, lymphocytes, monocytes, platelets, and CRP) and its derived metrics (neutrophil-to-lymphocyte ratio [NLR], platelet-to-lymphocyte ratio [PLR], lymphocyte-to-monocyte ratio [LMR], and systemic immune-inflammation index [SII]) were analyzed in relation to the following incident ALS by Cox proportional hazard models. Subgroup and interaction analyses were performed to explore the covariates of these relationships further. RESULTS: After adjusting for all covariates, the multivariate analysis showed that high neutrophil counts and their derived metrics (NLR and SII) were associated with an increased risk of ALS incidence (per SD increment hazard ratio [HR] = 1.15, 95% confidence interval [CI] = 1.02-1.29 for neutrophils; HR = 1.15, 95% CI = 1.03-1.28 for NLR; and HR = 1.17, 95% CI = 1.05-1.30 for SII). Subgroup and interaction analyses revealed that body mass index (BMI) and age had specific effects on this association. In participants with BMI ≥ 25 or age < 65 years, higher neutrophil counts, and their metrics increased the risk of incident ALS; however, in participants with BMI < 25 or age ≥ 65 years, neutrophils had no effect on incident ALS. INTERPRETATION: Our study provides evidence that increased neutrophil levels and neutrophil-derived metrics (NLR and SII) are associated with an increased risk of developing ALS. ANN NEUROL 2023;94:942-954.


Asunto(s)
Esclerosis Amiotrófica Lateral , Neutrófilos , Humanos , Anciano , Esclerosis Amiotrófica Lateral/epidemiología , Índice de Masa Corporal , Linfocitos , Pronóstico , Biomarcadores , Estudios Retrospectivos , Inflamación
8.
Microb Pathog ; 190: 106616, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38492826

RESUMEN

Root rot is a common disease, that severely affects the yield and quality of alfalfa. Biocontrol is widely used to control plant diseases caused by pathogenic fungi, however, biocontrol strains for alfalfa root rot are very limited. In this study, a Bacillus subtilis CG-6 strain with a significant biocontrol effect on alfalfa root rot was isolated. CG-6 secretes antibacterial enzymes and siderophore, phosphate solubilization and indoleacetic acid (IAA). The inhibition rate of strain CG-6 against Fusarium oxysporum was 87.33%, and it showed broad-spectrum antifungal activity. Inoculation with CG-6 significantly reduced the incidence of alfalfa root rot, the control effect of greenhouse cultivation reached 58.12%, and CG-6 treatment significantly increased alfalfa plant height, root length, fresh weight, and dry weight. The treatment with CG-6 significantly increased the levels of antioxidant enzymes (catalase, peroxidase, superoxide dismutase, and lipoxygenase) in alfalfa leaves by 15.52%-34.03%. Defensive enzymes (chitinase and ß-1,3-glucanase) increased by 24.37% and 28.08%, respectively. The expression levels of regulatory enzyme genes (MsCAT, MsPOD, MsCu, Zn-SOD1, MsCu, Zn-SOD2, MsCu, Zn-SOD3, and MsLOX2) and systemic resistance genes (MsPR1, MsPDF1.2, and MsVSP2) increased by 0.50-2.85 fold, which were higher than those in the pathogen treatment group. Therefore, CG-6 could be used as a potential strain to develop biopesticides against alfalfa root rot.


Asunto(s)
Bacillus subtilis , Fusarium , Medicago sativa , Enfermedades de las Plantas , Raíces de Plantas , Medicago sativa/microbiología , Bacillus subtilis/genética , Enfermedades de las Plantas/microbiología , Enfermedades de las Plantas/prevención & control , Raíces de Plantas/microbiología , Fusarium/crecimiento & desarrollo , Antibiosis , Ácidos Indolacéticos/metabolismo , Antioxidantes/metabolismo , Hojas de la Planta/microbiología , Quitinasas/metabolismo , Agentes de Control Biológico , Superóxido Dismutasa/metabolismo , Antifúngicos/farmacología
9.
Cancer Cell Int ; 24(1): 252, 2024 Jul 19.
Artículo en Inglés | MEDLINE | ID: mdl-39030557

RESUMEN

Dysregulated gene expression and imbalance of transcriptional regulation are typical features of cancer. RNA always plays a key role in these processes. Human transcripts contain many RNAs without long open reading frames (ORF, > 100 aa) and that are more than 200 bp in length. They are usually regarded as long non-coding RNA (lncRNA) which play an important role in cancer regulation, including chromatin remodeling, transcriptional regulation, translational regulation and as miRNA sponges. With the advancement of ribosome profiling and sequencing technologies, increasing research evidence revealed that some ORFs in lncRNA can also encode peptides and participate in the regulation of multiple organ tumors, which undoubtedly opens a new chapter in the field of lncRNA and oncology research. In this review, we discuss the biological function of lncRNA in tumors, the current methods to evaluate their coding potential and the role of functional small peptides encoded by lncRNA in cancers. Investigating the small peptides encoded by lncRNA and understanding the regulatory mechanisms of these functional peptides may contribute to a deeper understanding of cancer and the development of new targeted anticancer therapies.

10.
Stat Med ; 43(6): 1256-1270, 2024 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-38258898

RESUMEN

Allocating patients to treatment arms during a trial based on the observed responses accumulated up to the decision point, and sequential adaptation of this allocation, could minimize the expected number of failures or maximize total benefits to patients. In this study, we developed a Bayesian response-adaptive randomization (RAR) design targeting the endpoint of organ support-free days (OSFD) for patients admitted to the intensive care units. The OSFD is a mixture of mortality and morbidity assessed by the number of days of free of organ support within a predetermined post-randomization time-window. In the past, researchers treated OSFD as an ordinal outcome variable where the lowest category is death. We propose a novel RAR design for a composite endpoint of mortality and morbidity, for example, OSFD, by using a Bayesian mixture model with a Markov chain Monte Carlo sampling to estimate the posterior probability distribution of OSFD and determine treatment allocation ratios at each interim. Simulations were conducted to compare the performance of our proposed design under various randomization rules and different alpha spending functions. The results show that our RAR design using Bayesian inference allocated more patients to the better performing arm(s) compared to other existing adaptive rules while assuring adequate power and type I error rate control across a range of plausible clinical scenarios.


Asunto(s)
Proyectos de Investigación , Humanos , Distribución Aleatoria , Teorema de Bayes , Probabilidad , Morbilidad
11.
Epilepsy Behav ; 156: 109836, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38761448

RESUMEN

OBJECTIVE: The study aimed to investigate the association between physical activity and the four dimensions of psychosocial status in adults with epilepsy. METHODS: The data of individuals with epilepsy utilized in this cross-sectional study were derived from the 2022 National Health Interview Survey(NHIS). Physical activity was analyzed based on walking, moderate or vigorous intensity physical activity and the 2018 Physical Activity Guidelines (PAG) for Americans. The psychosocial status of the participants was assessed using self-report questionnaires that evaluated life satisfaction, symptoms of depression and anxiety, and social functioning. A multivariate ordinal regression model was employed to estimate odds ratios (ORs) and corresponding 95% confidence intervals (CIs) following adjustment for potential confounding factors. RESULTS: In total of 424 individuals with epilepsy(mean age:48.0 years; male: 40.6 %) were included in this study. About 39.9 % of the participants met the 2018 PAG for aerobic activity. After controlling for potential confounding factors, individuals who adhered to the 2018 PAG for aerobic activity were found to have a higher likelihood of reporting increased life satisfaction (OR, 0.39; 95 % CI: 0.21, 0.71), decreased symptoms of depression (OR, 0.53; 95 % CI: 0.30, 0.94), and improved social functioning (OR, 0.42; 95 % CI: 0.24, 0.74). However, no significant association was observed between physical activity and anxiety symptoms among individuals with epilepsy. CONCLUSIONS: This study emphasizes that moderate to vigorous physical activity enhances psychosocial health in individuals with epilepsy. Nevertheless, it is important to note that a causal relationship cannot be inferred from these findings, and further verification through randomized controlled trials is necessary.


Asunto(s)
Depresión , Epilepsia , Ejercicio Físico , Encuestas Epidemiológicas , Humanos , Masculino , Femenino , Epilepsia/psicología , Epilepsia/epidemiología , Persona de Mediana Edad , Adulto , Ejercicio Físico/psicología , Estudios Transversales , Depresión/epidemiología , Depresión/psicología , Ansiedad/psicología , Ansiedad/epidemiología , Anciano , Satisfacción Personal , Funcionamiento Psicosocial , Adulto Joven , Autoinforme , Calidad de Vida/psicología
12.
J Nanobiotechnology ; 22(1): 22, 2024 Jan 06.
Artículo en Inglés | MEDLINE | ID: mdl-38184620

RESUMEN

The accurate preoperative diagnosis and tracking of lung adenocarcinoma is hindered by non-targeting and diffusion of dyes used for marking tumors. Hence, there is an urgent need to develop a practical nanoprobe for tracing lung adenocarcinoma precisely even treating them noninvasively. Herein, Gold nanoclusters (AuNCs) conjugate with thyroid transcription factor-1 (TTF-1) antibody, then multifunctional nanoprobe Au-TTF-1 is designed and synthesized, which underscores the paramount importance of advancing the machine learning diagnosis and bioimaging-guided treatment of lung adenocarcinoma. Bright fluorescence (FL) and strong CT signal of Au-TTF-1 set the stage for tracking. Furthermore, the high specificity of TTF-1 antibody facilitates selective targeting of lung adenocarcinoma cells as compared to common lung epithelial cells, so machine learning software Lung adenocarcinoma auxiliary detection system was designed, which combined with Au-TTF-1 to assist the intelligent recognition of lung adenocarcinoma jointly. Besides, Au-TTF-1 not only contributes to intuitive and targeted visualization, but also guides the following noninvasive photothermal treatment. The boundaries of tumor are light up by Au-TTF-1 for navigation, it penetrates into tumor and implements noninvasive photothermal treatment, resulting in ablating tumors in vivo locally. Above all, Au-TTF-1 serves as a key platform for target bio-imaging navigation, machine learning diagnosis and synergistic PTT as a single nanoprobe, which demonstrates attractive performance on lung adenocarcinoma.


Asunto(s)
Adenocarcinoma del Pulmón , Neoplasias Pulmonares , Humanos , Fluorescencia , Terapia Fototérmica , Adenocarcinoma del Pulmón/diagnóstico por imagen , Adenocarcinoma del Pulmón/tratamiento farmacológico , Anticuerpos , Neoplasias Pulmonares/diagnóstico por imagen , Neoplasias Pulmonares/tratamiento farmacológico , Tomografía Computarizada por Rayos X
13.
BMC Pregnancy Childbirth ; 24(1): 300, 2024 Apr 22.
Artículo en Inglés | MEDLINE | ID: mdl-38649878

RESUMEN

BACKGROUND: Laser-assisted hatching (LAH) stands as the predominant technique for removing the zona pellucida (ZP) in embryos, primarily consisting of two methods: drilling laser-assisted hatching (D-LAH) and thinning laser-assisted hatching (T-LAH). Presently, both methods have limitations, and their comparative efficacy for embryo implantation and clinical pregnancy remains uncertain. AIM: Evaluate the impact of D-LAH and T-LAH on clinical pregnancy rates within assisted reproductive technology (ART). METHODS: We systematically searched electronic databases including PubMed, Web of Science, and Cochrane Library until July 20, 2022. This study encompassed observational studies and randomized controlled trials (RCTs). A 95% confidence interval (CI) was utilized for assessing the risk ratio (RR) of pregnancy outcomes. The level of heterogeneity was measured using I2 statistics, considering a value exceeding 50% as indicative of substantial heterogeneity. RESULTS: The meta-analysis scrutinized 9 studies involving 2405 clinical pregnancies from D-LAH and 2239 from T-LAH. Findings suggested no considerable variation in the clinical pregnancy rates between the two techniques (RR = 0.93, 95% CI: 0.79-1.10, I2 = 71%, P = 0.41). Subgroup analyses also revealed no substantial differences. However, D-LAH exhibited a notably higher occurrence of singleton pregnancies compared to T-LAH (RR = 2.28, 95% CI: 1.08-4.82, I2 = 89%, P = 0.03). There were no noteworthy distinctions observed in other secondary outcomes encompassing implantation rate, multiple pregnancies, ongoing pregnancy, miscarriage, premature birth, and live birth. CONCLUSION: Both the primary findings and subgroup analyses showed no marked variance in clinical pregnancy rates between D-LAH and T-LAH. Therefore, patients with varying conditions should select their preferred LAH technique after assessing their individual situation. However, due to the restricted number of studies involved, accurately gauging the influence of these laser techniques on clinical outcomes is challenging, necessitating further RCTs and high-quality studies to enhance the success rate of ART. TRIAL REGISTRATION: PROSPERO: CRD42022347066.


Asunto(s)
Índice de Embarazo , Técnicas Reproductivas Asistidas , Zona Pelúcida , Humanos , Embarazo , Femenino , Rayos Láser , Implantación del Embrión , Ensayos Clínicos Controlados Aleatorios como Asunto , Resultado del Embarazo , Transferencia de Embrión/métodos
14.
BMC Public Health ; 24(1): 1347, 2024 May 18.
Artículo en Inglés | MEDLINE | ID: mdl-38762539

RESUMEN

BACKGROUND: The relationship between lung function and sarcopenia remains ambiguous. The primary aim of this study was to investigate the potential association between lung function and sarcopenia in the older adults, as well as to examine the mediating role of cognitive function in this relationship. METHODS: The participants were selected from a nationally representative population-based cohort in China. The peak expiratory flow (PEF) measurement was used to evaluate the lung function in older persons. The sarcopenia was diagnosed using the guidelines of the Asian Working Group for Sarcopenia (AWGS) in 2019. The Cox proportional hazard model was utilized to perform primary analyses of the relationship between PEF and sarcopenia. The mediating effect of cognitive function was evaluated using the counterfactual mediation method. RESULTS: This cohort study included 4,011 older adults (average age, 66.6 years; 53.3% males). During a follow-up period of 3.86 years, 349 individuals were diagnosed with sarcopenia. After adjusting for potential confounders, each one-standard-deviation increase in PEF was associated with a 28% reduction in the risk of sarcopenia (hazard ratio [HR]: 0.72; 95% confidence interval [CI]: 0.63, 0.80). There was a significant mediation of cognition for the association between PEF and incident sarcopenia, and the proportion mediated was 12.2% (95% CI: 4.5%, 23.1%). CONCLUSIONS: Older adults with impaired lung function are more likely to develop sarcopenia. Nevertheless, cognition can explain only a small portion of this association. Thus, other potential pathways between lung function and sarcopenia must be elucidated.


Asunto(s)
Cognición , Sarcopenia , Humanos , Sarcopenia/epidemiología , Masculino , Femenino , Anciano , China/epidemiología , Cognición/fisiología , Persona de Mediana Edad , Ápice del Flujo Espiratorio , Estudios de Cohortes , Factores de Riesgo , Modelos de Riesgos Proporcionales , Pulmón/fisiopatología
15.
Health Commun ; 39(5): 906-914, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-36941529

RESUMEN

Autobiographical accounts on social media could play an essential role in shaping the public's understanding of illnesses and dispelling illness-related stigma. This study examined how people living with depression describe their illness experiences on Douyin, China's leading video-sharing platform, through content analysis. It finds that most videos were created by young women who have lived with the illness for over three years. The top three topics were patient psychology, experience sharing, and knowledge and medical advice. These videos provided an overall non-stigmatizing portrayal of depression, with more than 80% of the influencers using challenge cues. However, stigma cues contributed to the virality of the videos. The theoretical and practical implications of the study were discussed.


Asunto(s)
Depresión , Medios de Comunicación Sociales , Humanos , Femenino , Grabación en Video , Estigma Social
16.
Int Endod J ; 2024 Jun 21.
Artículo en Inglés | MEDLINE | ID: mdl-39031653

RESUMEN

AIM: This study investigated the effects of the inflammatory microenvironment of moderate pulpitis on biological properties of human dental pulp stem cells (DPSCs) and further explored the mechanism involved in osteo-/odontogenic induction of the inflammatory microenvironment. METHODOLOGY: Healthy DPSCs (hDPSCs) and inflammatory DPSCs (iDPSCs) were isolated from human-impacted third molars free of caries and clinically diagnosed with moderate pulpitis, respectively. Healthy DPSCs were treated with lipopolysaccharides (LPS) to mimic iDPSCs in vitro. The surface markers expressed on hDPSCs and iDPSCs were detected by flow cytometry. A CCK-8 assay was performed to determine cell proliferation. Flow cytometric analysis was used to evaluate cell apoptosis. The osteo-/odontogenic differentiation of DPSCs was evaluated by western blot, alkaline phosphatase staining, and Alizarin Red S staining. The functions of the genes of differentially expressed mRNAs of hDPSCs and iDPSCs were analysed using gene set enrichment analysis. Transmission electron microscopy and western blot were used to evaluate the autophagy changes of LPS-treated DPSCs. RESULTS: Compared with hDPSCs, iDPSCs showed no significant difference in proliferative capacity but had stronger osteo-/odontogenic potential. In addition, the mRNAs differentially expressed between iDPSCs and hDPSCs were considerably enriched in autophagosome formation and assembly-related molecules. In vitro mechanism studies further found that low concentrations of LPS could upregulate DPSC autophagy-related protein expression and autophagosome formation and promote its odontogenic/osteogenic differentiation, whereas the inhibition of DPSC autophagy led to the weakening of the odontogenic/osteogenic differentiation induced by LPS. CONCLUSIONS: This explorative study showed that DPSCs isolated from teeth with moderate pulpitis possessed higher osteo-/odontogenic differentiation capacity, and the mechanism involved was related to the inflammatory microenvironment-mediated autophagy of DPSCs. This helps to better understand the repair potential of inflamed dental pulp and provides the biological basis for pulp preservation and hard tissue formation in minimally invasive endodontics.

17.
Magn Reson Chem ; 62(1): 28-36, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37975559

RESUMEN

The local structure and spin Hamiltonian parameters (SHPs) g factors (gx , gy , gz ) and the hyperfine structure constants (Ax , Ay , Az ) for Cu2+ doped in the LiTaO3 crystal are theoretically investigated by the perturbation formulas for a 3d9 ion under rhombically elongated octahedral based on the cluster approach. The impurity Cu2+ was assumed to occupy the host trigonally-distorted octahedral Li+ site and experience the Jahn-Teller (JT) distortion from the host trigonal octahedral [TaO6 ]10- to the impurity rhombically elongated octahedral [CuO6 ]10- . Based on the calculations, the impurity-ligand bond lengths parallel and perpendicular to the C2 -axis are found to be R|| (≈ 2.305 Å) and R⊥ (≈ 2.112 Å) for the studied [CuO6 ]10- cluster, with the planar bond angle θ (≈ 78.2°). Meanwhile, the ground-state wave function for Cu2+ center in LiTaO3 was also obtained. The calculated SHPs based on the above local lattice distortions agree well with the experimental data, and the results are discussed.

18.
Pain Manag Nurs ; 25(3): e201-e208, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38278749

RESUMEN

BACKGROUND: Despite the increasing emphasis on rehabilitation training after orthopedic surgery, little is known about the pain caused by the procedure itself. Clinical practice is driven by beliefs in pain management. AIMS: This study aimed to explore the perspective of pain management during rehabilitation training after orthopedic trauma in China and its influencing factors from different perspectives in traditional Chinese medicine and Western medicine, respectively. DESIGN: A phenomenological qualitative study involving semi-structured interviews. SETTINGS:   METHODS: A qualitative study was conducted with 16 medical workers working in the Rehabilitation Medicine Department in eastern China from July 2022-February 2023. A directed method to thematic analysis was used to code the transcribed data and identify themes. RESULTS: Four main themes emerged. (1) Inconsistent perspectives and practice: Chinese doctors majoring in Western medicine felt sympathy, helpless, and had a lack of knowledge and misconception about pain. Traditional Chinese medicine deemed that pain is a protective mechanism and attached importance to holism and unique means. (2) Consistent outcome: Insufficient pain management will have a series of negative consequences for patients' recovery, forming a vicious cycle. (3) Expectations: Though they are not optimistic about traditional analgesics, enhancement, cooperation and ideal analgesic methods still be expressed, and (4) Concept transformation: Conducting nitrous oxide is a process not only to promote analgesic technology but also to promote the awareness and concept of pain management. CONCLUSIONS: Our study emphasized that medical workers should be aware of the importance of pain management at the same time while treating the disability. The study provides insight into pain management experiences within different educational backgrounds. The findings enable professionals to recognize the importance of pain management and its influencing factors to provide feasible and effective pain management strategies.


Asunto(s)
Manejo del Dolor , Investigación Cualitativa , Humanos , Manejo del Dolor/métodos , Manejo del Dolor/normas , Masculino , Femenino , Adulto , China , Persona de Mediana Edad , Medicina Tradicional China/métodos , Medicina Tradicional China/normas , Procedimientos Ortopédicos/métodos , Entrevistas como Asunto/métodos , Cirugía de Cuidados Intensivos
19.
BMC Biol ; 21(1): 271, 2023 11 24.
Artículo en Inglés | MEDLINE | ID: mdl-38001496

RESUMEN

BACKGROUND: Fraction of functional sequence in the human genome remains a key unresolved question in Biology and the subject of vigorous debate. While a plethora of studies have connected a significant fraction of human DNA to various biochemical processes, the classical definition of function requires evidence of effects on cellular or organismal fitness that such studies do not provide. Although multiple high-throughput reverse genetics screens have been developed to address this issue, they are limited to annotated genomic elements and suffer from non-specific effects, arguing for a strong need to develop additional functional genomics approaches. RESULTS: In this work, we established a high-throughput lentivirus-based insertional mutagenesis strategy as a forward genetics screen tool in aneuploid cells. Application of this approach to human cell lines in multiple phenotypic screens suggested the presence of many yet uncharacterized functional elements in the human genome, represented at least in part by novel exons of known and novel genes. The novel transcripts containing these exons can be massively, up to thousands-fold, induced by specific stresses, and at least some can represent bi-cistronic protein-coding mRNAs. CONCLUSIONS: Altogether, these results argue that many unannotated and non-canonical human transcripts, including those that appear as aberrant splice products, have biological relevance under specific biological conditions.


Asunto(s)
ADN , Genómica , Humanos , ARN Mensajero/metabolismo , Exones , Genómica/métodos , Mutagénesis Insercional , Empalme Alternativo
20.
J Environ Manage ; 359: 120984, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38678905

RESUMEN

The chronic lack of effective disposal of pollutants has resulted in the detection of a wide variety of EPs in the environment, with concentrations high enough to affect ecological health. Laccase, as a versatile oxidase capable of catalyzing a wide range of substrates and without producing toxic by-products, is a potential candidate for the biodegradation of pollutants. Immobilization can provide favorable protection for free laccase, improve the stability of laccase in complex environments, and greatly enhance the reusability of laccase, which is significant in reducing the cost of industrial applications. This study introduces the properties of laccase and subsequently elaborate on the different support materials for laccase immobilization. The research advances in the degradation of EDs, PPCPs, and PAHs by immobilized laccase are then reviewed. This review provides a comprehensive understanding of laccase immobilization, as well as the advantages of various support materials, facilitating the development of more economical and efficient immobilization systems that can be put into practice to achieve the green degradation of EPs.


Asunto(s)
Biodegradación Ambiental , Enzimas Inmovilizadas , Lacasa , Lacasa/metabolismo , Enzimas Inmovilizadas/metabolismo , Enzimas Inmovilizadas/química , Contaminantes Ambientales/metabolismo , Hidrocarburos Policíclicos Aromáticos/química , Hidrocarburos Policíclicos Aromáticos/metabolismo
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