Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Resultados 1 - 20 de 88
Filtrar
1.
Brief Bioinform ; 25(1)2023 11 22.
Artículo en Inglés | MEDLINE | ID: mdl-38197310

RESUMEN

Network pharmacology (NP) provides a new methodological perspective for understanding traditional medicine from a holistic perspective, giving rise to frontiers such as traditional Chinese medicine network pharmacology (TCM-NP). With the development of artificial intelligence (AI) technology, it is key for NP to develop network-based AI methods to reveal the treatment mechanism of complex diseases from massive omics data. In this review, focusing on the TCM-NP, we summarize involved AI methods into three categories: network relationship mining, network target positioning and network target navigating, and present the typical application of TCM-NP in uncovering biological basis and clinical value of Cold/Hot syndromes. Collectively, our review provides researchers with an innovative overview of the methodological progress of NP and its application in TCM from the AI perspective.


Asunto(s)
Inteligencia Artificial , Medicina Tradicional China , Humanos , Farmacología en Red , Investigadores
2.
Small ; 20(10): e2304407, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-37880907

RESUMEN

Cuproptosis is a novel form of regulated cell death which guarantees to increase the efficacy of existing anticancer treatments that employ traditional apoptotic therapeutics. However, reducing the amount of undesirable Cu ions released in normal tissue and maximizing Cu-induced cuproptosis therapeutic effects at tumor sites are the major challenges. In this study, exploiting the chemical properties of copper ionophores and the tumor microenvironment, a novel method is developed for controlling the valence of copper ions that cause photoinduced cuproptosis in tumor cells. CJS-Cu nanoparticles (NPs) can selectively induce cuproptosis after cascade reactions through H2 O2 -triggered Cu2+ release, photoirradiation-induced superoxide radical (∙O2 - ) generation, and reduction of Cu2+ to Cu+ by ∙O2 - . The generated reactive oxygen species can result in glutathione depletion and iron-sulfur cluster protein damage and further augmented cuproptosis. CJS-Cu NPs effectively suppressed tumor growth and downregulated the expression of metastasis-related proteins, contributing to the complete inhibition of lung metastasis. Ultimately, this study suggests novel avenues for the manipulation of cellular cuproptosis through photochemical reactions.


Asunto(s)
Neoplasias Pulmonares , Nanopartículas , Humanos , Cobre , Glutatión , Superóxidos , Apoptosis , Microambiente Tumoral
3.
Small ; : e2403292, 2024 Jul 03.
Artículo en Inglés | MEDLINE | ID: mdl-38958094

RESUMEN

Antimony selenide (Sb2Se3) has sparked significant interest in high-efficiency photovoltaic applications due to its advantageous material and optoelectronic properties. In recent years, there has been considerable development in this area. Nonetheless, defects and suboptimal [hk0] crystal orientation expressively limit further device efficiency enhancement. This study used Zinc (Zn) to adjust the interfacial energy band and strengthen carrier transport. For the first time, it is discovered that the diffusion of Zn in the cadmium sulfide (CdS) buffer layer can affect the crystalline orientation of the Sb2Se3 thin films in the superstrate structure. The effect of Zn diffusion on the morphology of Sb2Se3 thin films with CdxZn1-xS buffer layer has been investigated in detail. Additionally, Zn doping promotes forming Sb2Se3 thin films with the desired [hk1] orientation, resulting in denser and larger grain sizes which will eventually regulate the defect density. Finally, based on the energy band structure and high-quality Sb2Se3 thin films, this study achieves a champion power conversion efficiency (PCE) of 8.76%, with a VOC of 458 mV, a JSC of 28.13 mA cm-2, and an FF of 67.85%. Overall, this study explores the growth mechanism of Sb2Se3 thin films, which can lead to further improvements in the efficiency of Sb2Se3 solar cells.

4.
Qual Life Res ; 33(1): 207-218, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37824058

RESUMEN

OBJECTIVE: To investigate the effects of systemic lupus erythematosus (SLE) on health-related quality of life (HRQOL), the relationship between disease activity and HRQOL, and potential factors affecting HRQOL in Chinese SLE patients. METHODS: This study recruited 1568 patients and 2610 controls to explore the effects of SLE on HRQOL. The association between disease activity and HRQOL, and the influencing factors of HRQOL were determined in 1568 patients. Then, we prospectively followed 1096 patients to explore the association between reduced disease activity and improved HRQOL, and the influencing factors of improved HRQOL. The Short-Form 36 (SF-36) and SLE disease activity index (SLEDAI) were used to evaluate HRQOL and disease activity. RESULTS: Chinese SLE patients had lower HRQOL than controls in all domains (P < 0.001), especially in role-physical (RP) and role-emotional (RE). Compared with SLE patients from outside China, the HRQOL of Chinese patients appeared to be higher in mental component summary (MCS) but lower in RP and RE. SLEDAI was negatively correlated with HRQOL, which was validated using the results of a follow-up study, where SLEDAI reduction was positively associated with HRQOL improvements (P < 0.05). Furthermore, personality, life nervous and experiences of adverse life events may influence HRQOL and HRQOL improvements. CONCLUSION: SLE significantly affected the HRQOL of Chinese patients, especially in RP and RE. Disease activity was negatively correlated with HRQOL. We also found for the first time some factors affecting HRQOL, which can be regarded as the basis for improving the HRQOL of SLE patients.


Asunto(s)
Lupus Eritematoso Sistémico , Calidad de Vida , Humanos , Calidad de Vida/psicología , Estudios de Seguimiento , Índice de Severidad de la Enfermedad , Encuestas y Cuestionarios , Lupus Eritematoso Sistémico/psicología , China
5.
Sensors (Basel) ; 24(8)2024 Apr 22.
Artículo en Inglés | MEDLINE | ID: mdl-38676276

RESUMEN

Partial discharge detection is considered a crucial technique for evaluating insulation performance and identifying defect types in cable terminals of high-speed electric multiple units (EMUs). In this study, terminal samples exhibiting four typical defects were prepared from high-speed EMUs. A cable discharge testing system, utilizing high-frequency current sensing, was developed to collect discharge signals, and datasets corresponding to these defects were established. This study proposes the use of the convolutional neural network (CNN) for the classification of discharge signals associated with specific defects, comparing this method with two existing neural network (NN)-based classification models that employ the back-propagation NN and the radial basis function NN, respectively. The comparative results demonstrate that the CNN-based model excels in accurately identifying signals from various defect types in the cable terminals of high-speed EMUs, surpassing the two existing NN-based classification models.

6.
Opt Express ; 31(12): 20505-20517, 2023 Jun 05.
Artículo en Inglés | MEDLINE | ID: mdl-37381444

RESUMEN

A true-color light-field display system with a large depth-of-field (DOF) is demonstrated. Reducing crosstalk between viewpoints and increasing viewpoint density are the key points to realize light-field display system with large DOF. The aliasing and crosstalk of light beams in the light control unit (LCU) are reduced by adopting collimated backlight and reversely placing the aspheric cylindrical lens array (ACLA). The one-dimensional (1D) light-field encoding of halftone images increases the number of controllable beams within the LCU and improves viewpoint density. The use of 1D light-field encoding leads to a decrease in the color-depth of the light-field display system. The joint modulation for size and arrangement of halftone dots (JMSAHD) is used to increase color-depth. In the experiment, a three-dimensional (3D) model was constructed using halftone images generated by JMSAHD, and a light-field display system with a viewpoint density of 1.45 (i.e. 1.45 viewpoints per degree of view) and a DOF of 50 cm was achieved at a 100 ° viewing angle.

7.
Prev Med ; 175: 107690, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37659613

RESUMEN

High sugar-sweetened beverages (SSBs) are a controllable risk factor for chronic non-communicable diseases (NCDs), but their effect on the global disease burden is uncertain. The study aims to assess the global burden of high SSBs from 1990 to 2019. Global Burden of Disease (GBD) 2019 provides data on deaths, disability-adjusted life years (DALYs), years of life with disabilities (YLDs) and years of life lost (YLLs) ascribe to high SSBs by ages, genders, regions and countries. For the past 30 years, overall exposure to high SSBs decreased for males and increased for females. The number of deaths from chronic NCDs ascribed to high SSBs increased from 149,988 (110,278-182,947) to 242,218 (172,045-302,250), DALYs increased from 3,698,578 (2,693,476-4,559,740) to 6,307,562 (4,300,765-8,079,556), especially the males. Age-standardized YLDs rate (ASYLDs) increased from 11.58 to 17.03. The number of ischemic heart disease (IHD) and diabetes mellitus (DM) deaths and DALYs ascribed to high SSBs has been increasing. Age-standardized death rate (ASDR) for DM risen from 0.56 to 0.62, age-standardized DALYs rate (ASDALYs) risen from 21.41 to 28.21. The burden of disease ascribed to high SSBs was in the elderly significantly higher than in the young and middle-aged, mainly concentrated in Central Asia and Oceania. The disease burden was highest in regions with moderate sociodemographic index (SDI). More extraordinary efforts should be made to raise awareness among the general public about interventions aimed at limiting the use of high SSBs, to reduce disease burden ascribed to high SSBs.

8.
Clin Rehabil ; 37(6): 774-790, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-36683428

RESUMEN

OBJECTIVE: To systematically review the effects of extracorporeal shock wave therapy (ESWT) for shoulder pain after stroke. DATA SOURCES: A systematic review of Cochrane Central Register of Controlled Trials (CENTRAL), Embase, PubMed, Web of Science, CNKI, SinoMed, WanFang Data, VIP, and ClinicalTrials.gov from the establishment of the database to 20 December 2022 was carried out. REVIEW METHODS: The bibliography was screened to identify randomized controlled trials (RCTs) that applied extracorporeal shock waves to shoulder pain after stroke. Two researchers independently searched, screened, and extracted data from each database according to the search strategy and resolved any disagreements through negotiation. RESULTS: A total of 18 RCTs were included (1248 individuals). Meta-analysis showed that the ESWT group had better visual analogue scale (VAS) scores (mean difference (MD) = - 1.19, 95% confidence interval (CI) [ - 1.43, - 0.95], p < 0.00001), Fugl-Meyer assessment upper extremity scale (FMA-UE) scores (MD = 6.25, 95% CI [4.64, 7.87], p < 0.00001), active range of motion (AROM) assessment (MD = 11.28, 95% CI [5.26, 17.30], p = 0.0002), and functional comprehensive assessment (FCA) scores (MD = 5.47, 95% CI [4.45, 6.49], p < 0.00001) comparative to the control group; no statistical significance in Constant-Murley score (CMS) (MD = 0.98, 95% CI [ - 11.05, 13.02], p = 0.87) and descriptive analysis of modified Barthel Index (MBI) only. CONCLUSION: The ESWT improves pain levels, motor function, active mobility, comprehensive function of shoulder, and activities of daily living (ADL) better than conventional treatment in patients with shoulder pain after stroke.


Asunto(s)
Tratamiento con Ondas de Choque Extracorpóreas , Accidente Cerebrovascular , Humanos , Dolor de Hombro/diagnóstico , Dolor de Hombro/etiología , Dolor de Hombro/terapia , Modalidades de Fisioterapia , Actividades Cotidianas
9.
Metab Brain Dis ; 38(4): 1273-1284, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36781583

RESUMEN

Circular RNAs (circRNAs) exert regulatory roles in cerebrovascular disease. Human brain microvascular endothelial cells (HBMECs) participated in brain vascular dysfunction in ischemic stroke. Herein, the functions of circ_0000566 in oxygen-glucose deprivation and reoxygenation (OGD/R)-induced HBMECs were investigated. The expression of circ_0000566, miR-18a-5p, and Activin receptor type 2B (ACVR2B) was measured via quantitative real-time PCR (qRT-PCR). Cell Counting Kit-8 (CCK-8) and flow cytometry assays were utilized to detect cell viability and cell apoptosis. Western blot assay was employed to measure the levels of apoptotic-related proteins and ACVR2B. The secretion of IL-1ß, IL-6, and TNF-α was detected via corresponding kits. The relationship between miR-18a-5p and circ_0000566 or ACVR2B was examined via dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay. Circ_0000566 and ACVR2B were highly expressed, while miR-18a-5p was down-regulated in OGD/R-treated HBMECs. OGD/R treatment promoted HBMECs apoptosis and inflammation and suppressed cell viability, which could be attenuated by silencing of circ_0000566. Circ_0000566 acted as a miR-18a-5p sponge to contribute to OGD/R-induced HBMECs injury. ACVR2B served as a direct target of miR-18a-5p, and ACVR2B overexpression might abolish the inhibitory role of miR-18a-5p on OGD/R-treated HBMEC injury. Circ_0000566 sponged miR-18a-5p to regulate OGD/R-induced HBMECs injury via regulating ACVR2B expression.


Asunto(s)
Lesiones Encefálicas , MicroARNs , Humanos , Células Endoteliales , Apoptosis , Encéfalo , MicroARNs/genética , Glucosa , Receptores de Activinas Tipo II/genética
10.
J Clin Lab Anal ; 37(13-14): e24945, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-37488812

RESUMEN

BACKGROUND: Glucocorticoids (GCs) were the essential drugs for systemic lupus erythematosus (SLE). However, different patients differ substantially in their response to GCs treatment. Our current study aims at investigating whether climate variability and climate-gene interaction influence SLE patients' response to the therapy of GCs. METHODS: In total, 778 SLE patients received therapy of GCs for a study of 12-week follow-up. The efficacy of GCs treatment was evaluated using the Systemic Lupus Erythematosus Disease Activity Index. The climatic data were provided by China Meteorological Data Service Center. Additive and multiplicative interactions were examined. RESULTS: Compared with patients with autumn onset, the efficacy of GCs in patients with winter onset is relatively poor (ORadj = 1.805, 95%CIadj : 1.181-3.014, padj = 0.020). High mean relative humidity during treatment decreased the efficacy of GCs (ORadj = 1.033, 95%CIadj : 1.008-1.058, padj = 0.011), especially in female (ORadj = 1.039, 95%CIadj : 1.012-1.067, padj = 0.004). There was a significant interaction between sunshine during treatment and TRAP1 gene rs12597773 on GCs efficacy (Recessive model: AP = 0.770). No evidence of significant interaction was found between climate factors and the GR gene polymorphism on the improved GCs efficacy in the additive model. Multiplicative interaction was found between humidity in the month prior to treatment and GR gene rs4912905 on GCs efficacy (Dominant model: OR = 0.470, 95%CI: 0.244-0.905, p = 0.024). CONCLUSIONS: Our findings suggest that climate variability influences SLE patients' response to the therapy of GCs. Interactions between climate and TRAP1/GR gene polymorphisms were related to GCs efficacy. The results guide the individualized treatment of SLE patients.


Asunto(s)
Glucocorticoides , Lupus Eritematoso Sistémico , Humanos , Femenino , Glucocorticoides/uso terapéutico , Lupus Eritematoso Sistémico/tratamiento farmacológico , Lupus Eritematoso Sistémico/genética , Estaciones del Año , Polimorfismo de Nucleótido Simple/genética , China/epidemiología , Proteínas HSP90 de Choque Térmico/genética , Proteínas HSP90 de Choque Térmico/uso terapéutico
11.
Public Health ; 220: 1-9, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-37182373

RESUMEN

OBJECTIVES: The global burden of heart disease is severe and increasing in the coming years. This study aims to analyze the global burden of heart disease. STUDY DESIGN: Rheumatic heart disease (RHD), ischemic heart disease (IHD), hypertensive heart disease (HHD), and non-rheumatic valvular heart disease (NRVHD) were selected and analyzed from the Global Burden of Disease Study 2019. METHODS: The prevalence, deaths, disability-adjusted life years and their corresponding age-standardized rates were obtained from the Global Burden of Disease Study 2019. In addition, estimated annual percentage change was calculated to better assess epidemiological trends. In addition, we performed an age-period-cohort analysis using the Nordpred package in R program to predict death trends over the next 20 years. RESULTS: Globally, the prevalence of four heart diseases (RHD, IHD, HHD, and NRVHD) increased by 70.5%, 103.5%, 137.9%, and 110.0% compared with 1990, respectively. The deaths cases of RHD decreased by 15.6%, whereas IHD, HHD, and NRVHD increased by 60.4%, 76.6%, and 110.6%. Compared with absolute values, their corresponding age-standardized rates only showed a slight increase trend or even decreased in some areas with high sociodemographic index. In the next 20 years, the absolute values of deaths will continue to increase, whereas their age-standardized rates of deaths will flatten out. CONCLUSIONS: Globally, the absolute values of heart disease have increased over the past 30 years and will continue to increase over the next 20 years. Targeted prevention and control strategies and measures need to be developed and improved to reduce this burden.


Asunto(s)
Isquemia Miocárdica , Cardiopatía Reumática , Humanos , Adulto Joven , Adulto , Carga Global de Enfermedades , Años de Vida Ajustados por Calidad de Vida , Salud Global , Isquemia Miocárdica/epidemiología , Cardiopatía Reumática/epidemiología
12.
Sensors (Basel) ; 23(12)2023 Jun 20.
Artículo en Inglés | MEDLINE | ID: mdl-37420920

RESUMEN

In recent years, point cloud-based 3D object detection has seen tremendous success. Previous point-based methods use Set Abstraction (SA) to sample the key points and abstract their features, which did not fully take density variation into consideration in point sampling and feature extraction. The SA module can be split into three parts: point sampling, grouping and feature extraction. Previous sampling methods focus more on distances among points in Euclidean space or feature space, ignoring the point density, thus making it more likely to sample points in Ground Truth (GT) containing dense points. Furthermore, the feature extraction module takes the relative coordinates and point features as input, while raw point coordinates can represent more informative attributes, i.e., point density and direction angle. So, this paper proposes Density-aware Semantics-Augmented Set Abstraction (DSASA) for solving the above two issues, which takes a deep look at the point density in the sampling process and enhances point features using onefold raw point coordinates. We conduct the experiments on the KITTI dataset and verify the superiority of DSASA.


Asunto(s)
Concienciación , Semántica
13.
Rheumatology (Oxford) ; 61(6): 2652-2662, 2022 05 30.
Artículo en Inglés | MEDLINE | ID: mdl-34718439

RESUMEN

OBJECTIVE: To investigate the associations of mitochondrial DNA (mtDNA) genetic variants with SLE susceptibility, glucocorticoid (GC) efficacy and prognosis. METHODS: Our study was done in two stages. First, we performed whole mitochondrial genome sequencing in 100 patients and 100 controls to initially screen potential mtDNA variants associated with disease and GC efficacy. Then, we validated the results in an independent set of samples. In total, 605 SLE patients and 604 normal controls were included in our two-stage study. A two-stage efficacy study was conducted in 512 patients treated with GCs for 12 weeks. We also explored the association between mtDNA variants and SLE prognosis. RESULTS: In the combined sample, four mtDNA variants (A4833G, T5108C, G14569A, CA514-515-) were associated with SLE susceptibility (all PBH < 0.05). We confirmed that T16362C was related to efficacy of GCs (PBH = 0.014). Significant associations were detected between T16362C and T16519C and the efficacy of GCs in females with SLE (PBH < 0.05). In the prognosis study, variants A4833G (PBH = 0.003) and G14569A (PBH = 9.744 × 10-4) substantially increased SLE relapse risk. Female patients harbouring variants T5108C and T16362C were more prone to relapse (PBH < 0.05). Haplotype analysis showed that haplogroup G was linked with SLE susceptibility (PBH = 0.001) and prognosis (PBH = 0.013). Moreover, mtDNA variant-environment interactions were observed. CONCLUSION: We identified novel mtDNA genetic variants that were associated with SLE susceptibility, GC efficacy, and prognosis. Interactions between mtDNA variants and environmental factors were related to SLE risk and GC efficacy. Our findings provide important information for future understanding of the occurrence and development of SLE.


Asunto(s)
Glucocorticoides , Lupus Eritematoso Sistémico , ADN Mitocondrial/genética , Femenino , Predisposición Genética a la Enfermedad , Glucocorticoides/uso terapéutico , Humanos , Lupus Eritematoso Sistémico/tratamiento farmacológico , Lupus Eritematoso Sistémico/genética , Polimorfismo de Nucleótido Simple , Pronóstico , Recurrencia
14.
Plant Physiol ; 187(2): 758-768, 2021 10 05.
Artículo en Inglés | MEDLINE | ID: mdl-34608972

RESUMEN

The CRISPR/Cas9 system is a widely used tool for genome editing in plants. In Arabidopsis (Arabidopsis thaliana), egg cell-specific promoters driving Cas9 expression have been applied to reduce the proportion of T1 transformants that are chimeras; however, this approach generally leads to relatively low mutagenesis rates. In this study, a GLABRA2 mutation-based visible selection (GBVS) system was established to enrich nonchimeric mutants among T1 plants generated by an egg cell-specific CRISPR/Cas9 system. GBVS generally enhanced mutation screening, increasing the frequency by 2.58- to 7.50-fold, and 25%-48.15% of T1 plants selected through the GBVS system were homozygous or biallelic mutants, which was 1.71- to 7.86-fold higher than the percentage selected using the original system. The mutant phenotypes of T2 plants were not obviously affected by the glabrous background for all four target genes used in this study. Additionally, the nonchimeric pyrabactin resistance 1 (PYR1)/PYR1-like 1 (PYL1) and PYL2 triple mutant pyr1/pyl1/pyl2 could be obtained in the T1 generation with a ratio of 26.67% when GBVS was applied. Collectively, our results show that compared with the known CRISPR/Cas9 systems, the GBVS system described here saves more time and labor when used for the obtainment of homozygous or biallelic monogenic mutants and nonchimeric polygenic mutants in Arabidopsis.


Asunto(s)
Proteínas de Arabidopsis/genética , Arabidopsis/genética , Sistemas CRISPR-Cas , Proteínas de Homeodominio/genética , Mutación , Selección Genética , Proteína 9 Asociada a CRISPR/genética
15.
Lupus ; 31(14): 1735-1743, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36194484

RESUMEN

OBJECTIVE: Our present study intended to examine the associations of RPEL1 and miR-1307 gene polymorphisms (rs4917385 and rs7911488) with susceptibility, glucocorticoids (GCs) efficacy, anxiety, depression, and health-related quality of life (HRQoL) in Chinese systemic lupus erythematosus (SLE) patients. METHODS: Initially, 1000 participants (500 SLE cases and 500 controls) were recruited for the case-control study. Then, 429 cases who received GCs were followed through 12 weeks to explore GCs efficacy, depression, anxiety, and HRQoL. We selected the iMLDR technique for genotyping: RPEL1: rs4917385 (G/T) and miR-1307: rs7911488 (A/G). RESULTS: The minor G allele of rs7911488 reduced the risk of SLE (p = .024). Four haplotypes consisting of rs4917385 and rs7911488 were associated with SLE susceptibility (p < .025). Both rs4917385 and rs7911488 were associated with anxiety symptoms and physical function (PF) in SLE patients (p < .025). The rs4917385 was associated with depression and its improvement. No statistical significance was found between RPEL1 and miR-1307 gene polymorphisms with GCs efficacy. Meanwhile, additive interaction analysis showed a significant association between RPEL1 and miR-1307 gene polymorphisms with tea consumption in anxiety. CONCLUSION: RPEL1 and miR-1307 gene polymorphisms (rs4917385 and rs7911488) might be related to SLE susceptibility in Chinese population. Additionally, the two polymorphisms were possibly associated with depression, anxiety, and HRQoL in Chinese SLE population.


Asunto(s)
Ansiedad , Depresión , Lupus Eritematoso Sistémico , MicroARNs , Humanos , Ansiedad/genética , Ansiedad/diagnóstico , Estudios de Casos y Controles , China/epidemiología , Depresión/genética , Depresión/diagnóstico , Predisposición Genética a la Enfermedad , Glucocorticoides/uso terapéutico , Lupus Eritematoso Sistémico/tratamiento farmacológico , Lupus Eritematoso Sistémico/genética , Lupus Eritematoso Sistémico/psicología , MicroARNs/genética , Polimorfismo de Nucleótido Simple , Calidad de Vida
16.
Ophthalmic Physiol Opt ; 42(1): 36-47, 2022 01.
Artículo en Inglés | MEDLINE | ID: mdl-34796534

RESUMEN

PURPOSE: To investigate haemoglobin oxygenation in the visual cortex of myopic patients using functional near-infrared spectroscopy (fNIRS). METHODS: The experiment consisted of two parts. Part 1 examined functional changes in the visual cortex before and after refractive correction in myopic patients. Subjects were divided into normal controls, uncorrected and corrected myopes. Part 2 examined functional changes in the visual cortex caused by lens-induced myopia in normal subjects, and whether this activity recovered after a period of rest. Here, subjects were divided into three groups: emmetropes, lens-induced myopia and a rest group. The rest group completed a test with the uncorrected eye following lens removal and 5 min of rest. The visual stimulus was a black and white checkerboard. fNIRS was used to detect changes in oxyhaemoglobin content within the visual cortex. The original fNIRS data were analysed using MATLAB to obtain the ß values (the visual cortical activity response caused by the task); these were used to calculate Δß, which represents the degree of change in oxygenated haemoglobin caused by visual stimulation. RESULTS: The Δß value measured in each single channel or only in the region of interest (ROI) was significantly higher in the emmetropic control group than the uncorrected myopic group. After optical correction, the responses of myopic subjects approached those of the emmetropes and were not significantly different. If myopia was induced in emmetropic subjects by imposing defocus with positive lenses, a decline in functional activity was observed similar that observed in uncorrected myopes. Activity recovered after the lenses were removed. CONCLUSIONS: Myopic defocus reduced the level of haemoglobin oxygenation in the visual cortex, but activity could be restored by optical correction.


Asunto(s)
Lentes , Miopía , Emetropía , Humanos , Refracción Ocular , Espectroscopía Infrarroja Corta
17.
Int J Mol Sci ; 23(23)2022 Dec 06.
Artículo en Inglés | MEDLINE | ID: mdl-36499767

RESUMEN

Plant defense responses under unfavorable conditions are often associated with reduced growth. However, the mechanisms underlying the growth-defense tradeoff remain to be fully elucidated, especially at the transcriptional level. Here, we revealed a Cys2/His2-type zinc finger transcription factor, namely, ZAT18, which played dual roles in plant immunity and growth by oppositely regulating the signaling of defense- and growth-related hormones. ZAT18 was first identified as a salicylic acid (SA)-inducible gene and was required for plant responses to SA in this study. In addition, we observed that ZAT18 enhanced the plant immunity with growth penalties that may have been achieved by activating SA signaling and repressing auxin signaling. Further transcriptome analysis of the zat18 mutant showed that the biological pathways of defense-related hormones, including SA, ethylene and abscisic acid, were repressed and that the biological pathways of auxin and cytokinin, which are growth-related hormones, were activated by abolishing the function of ZAT18. The ZAT18-mediated regulation of hormone signaling was further confirmed using qRT-PCR. Our results explored a mechanism by which plants handle defense and growth at the transcriptional level under stress conditions.


Asunto(s)
Proteínas de Arabidopsis , Arabidopsis , Dedos de Zinc CYS2-HIS2 , Arabidopsis/metabolismo , Factores de Transcripción/metabolismo , Regulación de la Expresión Génica de las Plantas , Plantas Modificadas Genéticamente/metabolismo , Proteínas de Arabidopsis/metabolismo , Ácido Salicílico/farmacología , Ácido Salicílico/metabolismo , Hormonas/metabolismo , Enfermedades de las Plantas/genética
18.
Scott Med J ; 67(3): 109-120, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-35686317

RESUMEN

BACKGROUND AND AIMS: This updated meta-analysis aimed to further quantify the risk of endometrial, ovarian, and breast cancer in patients with polycystic ovary syndrome (PCOS), thus providing updated and more reliable estimates. METHODS AND RESULTS: We identified relevant articles by searching electronic databases of PubMed, Embase, Web of Science, and Chinese Biological Medical Literature (CBM) published up to March 20, 2021. The pooled effect estimates and their 95% confidence intervals (CIs) were calculated using the random-effect model or the fixed-effect model. A total of 26 eligible studies were included. We found that PCOS was significantly associated with endometrial cancer (odds ratios [OR]: 3.66, 95%CI: 2.05-6.54, P < 0.001), but not with ovarian or breast cancer (OR: 1.23, 95%CI: 0.99-1.53, P = 0.059; OR: 0.94, 95%CI: 0.78-1.14, P = 0.551, respectively). However, in subgroups of high-quality studies, cohort studies, younger women (54 years or less or premenopausal), and studies with unadjusted body mass index (BMI), PCOS patients had a significantly higher risk of ovarian cancer. CONCLUSION: These results indicated that PCOS is a significant risk factor for endometrial cancer independent of BMI, but not for breast cancer. PCOS may increase the risk of ovarian cancer in younger women.


Asunto(s)
Neoplasias de la Mama , Neoplasias Endometriales , Neoplasias Ováricas , Síndrome del Ovario Poliquístico , Neoplasias de la Mama/complicaciones , Neoplasias de la Mama/etiología , Neoplasias Endometriales/complicaciones , Neoplasias Endometriales/etiología , Femenino , Humanos , Neoplasias Ováricas/epidemiología , Neoplasias Ováricas/etiología , Síndrome del Ovario Poliquístico/complicaciones , Síndrome del Ovario Poliquístico/epidemiología , Factores de Riesgo
19.
J Clin Lab Anal ; 35(8): e23892, 2021 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-34272765

RESUMEN

BACKGROUND: Systemic lupus erythematosus is a heterogeneous autoimmune disease characterized by multi-system injuries and overproduction of autoantibodies. There are many genetic studies on SLE, but no report has considered the relationship between cytoplasmic dynein and SLE susceptibility. OBJECTIVES: Our study intends to investigate whether DYNC1H1 gene SNP/CNV is related to SLE susceptibility, GCs efficacy, HRQOL, anxiety, and depression in Chinese SLE patients. METHODS: A total of 502 cases and 544 healthy controls were recruited into the case-control study, and 472 subjects from the case group were followed up for 12 weeks to evaluate GCs efficacy, HRQOL, anxiety, and depression. Multiplex SNaPshot technique was applied to genotype the seven SNPs of DYNC1H1, and AccuCopyTM method was conducted to quantify the copy number of DYNC1H1. Anxiety and depression were evaluated using HAMA and HAMD-24 scales, respectively. The SF-36 scale was used to assess HRQOL. RESULTS: The significant association between SNP rs1190606 and SLE susceptibility was displayed in the dominant model (PBH = 0.004) as well as its allele model (PBH = 0.004). We also found that SNP rs2273440 was related to photosensitization symptom in SLE patients (PBH = 0.032). In the follow-up study, SNP rs11160668 was connected with the improvement of BP in male patients (PBH = 0.011). However, no association of DYNC1H1 gene with GCs efficacy, anxiety, and depression was found. No CNV in DYNC1H1 was detected. CONCLUSIONS: The study suggests that DYNC1H1 gene polymorphisms may have an effect on SLE susceptibility and BP improvement of HRQOL in Chinese SLE patients.


Asunto(s)
Ansiedad/genética , Dineínas Citoplasmáticas/genética , Depresión/genética , Lupus Eritematoso Sistémico/genética , Lupus Eritematoso Sistémico/psicología , Adulto , Pueblo Asiatico/genética , Estudios de Casos y Controles , Variaciones en el Número de Copia de ADN , Femenino , Frecuencia de los Genes , Predisposición Genética a la Enfermedad , Glucocorticoides/uso terapéutico , Haplotipos , Humanos , Lupus Eritematoso Sistémico/tratamiento farmacológico , Masculino , Polimorfismo de Nucleótido Simple , Calidad de Vida , Resultado del Tratamiento
20.
Hum Brain Mapp ; 41(17): 4964-4981, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-32808714

RESUMEN

This study investigated the gender differences in deception and their neural basis in the perspective of two-person neuroscience. Both male and female dyads were asked to perform a face-to-face spontaneous sender-receiver deception task, while their neural activities in the prefrontal cortex (PFC) and right temporal parietal junction (rTPJ) were recorded simultaneously using functional near-infrared spectroscopy (fNIRS)-based hyperscanning. Male and female dyads displayed similar deception rate, successful deception rate, and eye contact in deception trials. Moreover, eye contact in deception trials was positively correlated with the success rate of deception in both genders. The fNIRS data showed that the interpersonal neural synchronization (INS) in PFC was significantly enhanced only in female dyads when performed the deception task, while INS in rTPJ was increased only in male dyads. Such INS was correlated with the success rate of deception in both dyads. Granger causality analysis showed that no significant directionality between time series of PFC (or rTPJ) in each dyad, which could indicate that sender and receiver played equally important role during deception task. Finally, enhanced INS in PFC in female dyads mediated the contribution of eye contact to the success rate of deception. All findings in this study suggest that differential patterns of INS are recruited when male and female dyads perform the face-to-face deception task. To our knowledge, this is the first interbrain evidence for gender difference of successful deception, which could make us a deeper understanding of spontaneous face-to-face deception.


Asunto(s)
Comunicación , Decepción , Lóbulo Parietal/fisiología , Corteza Prefrontal/fisiología , Interacción Social , Percepción Social , Lóbulo Temporal/fisiología , Adulto , Femenino , Fijación Ocular/fisiología , Neuroimagen Funcional , Humanos , Masculino , Lóbulo Parietal/diagnóstico por imagen , Corteza Prefrontal/diagnóstico por imagen , Factores Sexuales , Espectroscopía Infrarroja Corta , Percepción del Habla/fisiología , Lóbulo Temporal/diagnóstico por imagen , Adulto Joven
SELECCIÓN DE REFERENCIAS
Detalles de la búsqueda