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1.
J Neurosci Res ; 102(1)2024 01.
Artículo en Inglés | MEDLINE | ID: mdl-38284844

RESUMEN

Chronic cerebral ischemia (CCI) can lead to vascular cognitive impairment, but therapeutic options are limited. Cognitive-exercise dual-task (CEDT), as a potential rehabilitation intervention, can attenuate cognitive impairment. However, the related mechanisms remain unclear. In this study, 2-vessel occlusion (2-VO) in male SD rats was performed to establish the CCI model. The rats were treated with cognitive, exercise, or CEDT intervention for 21 days. The Morris water maze (MWM) test was used to assess cognitive ability. TUNEL staining was used to detect the neuronal apoptosis. Immunofluorescence, RT-qPCR and Western blot were used to detect the protein or mRNA levels of EphrinA3, EphA4, p-PI3K, and p-Akt. The results showed that CEDT could improve performance in the MWM test, reverse the increased expression of EphrinA3 and EphA4, and the reduced expression of p-PI3K and p-Akt in CCI rats, which was superior to exercise and cognitive interventions. In vitro, oxygenglucose deprivation (OGD) challenge of astrocytes and neuronal cells were used to mimic cerebral ischemia. Immunofluorescence assay revealed that the levels of MAP-2, p-PI3K, and p-Akt were reduced in EphrinA3 overexpressed cells after OGD stimulation. Finally, the knock-down of EphrinA3 by shRNA significantly promoted the recovery of cognitive function and activation of PI3K/Akt after CEDT treatment in CCI rats. In conclusion, our study suggests that CEDT promotes cognitive function recovery after CCI by regulating the signaling axis of EphrinA3/EphA4/PI3K/Akt.


Asunto(s)
Isquemia Encefálica , Fosfatidilinositol 3-Quinasas , Masculino , Animales , Ratas , Ratas Sprague-Dawley , Proteínas Proto-Oncogénicas c-akt , Transducción de Señal , Cognición
2.
BMC Public Health ; 24(1): 765, 2024 Mar 12.
Artículo en Inglés | MEDLINE | ID: mdl-38475777

RESUMEN

BACKGROUND: Occupational hazards occur in all walks of life. China's horticulture industry is undergoing rapid development. However, the mental health of garden workers has not received much attention. This study investigates the mental health status and influencing factors of Chinese garden workers and provides a basis for promoting their mental health and ensuring the healthy development of Chinese horticulture. METHODS: A cross-sectional survey of garden workers in Beijing was conducted from 10 July 2021 to 10 October 2021. A total of 3349 valid questionnaires were recovered, with an effective response rate of 95.69%. Descriptive statistical analysis was carried out on the demographic characteristics, job satisfaction, stress, anxiety, and depression of garden workers, and the influencing factors affecting the mental health of Chinese garden workers were found through a t-test, variance analysis, and ordinal multi-class logistic regression analysis. RESULTS: Survey respondents were mostly male (54.4%) and under the age of 40 (64.1%). The anxiety and depression symptoms of the garden workers were moderate. Among staff members, 40.2% were in a normal state of stress. Gender, three meals on time, monthly income, and job satisfaction were the factors influencing stress, anxiety, and depression symptoms among garden workers. CONCLUSION: Compared to medical staff and other groups, the stress, anxiety, and depression symptoms of Chinese garden workers are severe. Gender, monthly income, and job satisfaction are important factors affecting their mental health. Managers should continuously improve the working environment of garden workers, provide salaries that match their positions, and improve their job recognition and satisfaction to reduce the impact of negative emotions on personal health.


Asunto(s)
Ansiedad , Salud Mental , Humanos , Masculino , Femenino , Estudios Transversales , Encuestas y Cuestionarios , Beijing , Satisfacción en el Trabajo
3.
World J Microbiol Biotechnol ; 40(6): 191, 2024 May 04.
Artículo en Inglés | MEDLINE | ID: mdl-38702442

RESUMEN

Seed endophytes played a crucial role on host plants stress tolerance and heavy metal (HM) accumulation. Dysphania ambrosioides is a hyperaccumulator and showed strong tolerance and extraordinary accumulation capacities of multiple HMs. However, little is known about its seed endophytes response to field HM-contamination, and its role on host plants HM tolerance and accumulation. In this study, the seed endophytic community of D. ambrosioides from HM-contaminated area (H) and non-contaminated area (N) were investigated by both culture-dependent and independent methods. Moreover, Cd tolerance and the plant growth promoting (PGP) traits of dominant endophytes from site H and N were evaluated. The results showed that in both studies, HM-contamination reduced the diversity and richness of endophytic community and changed the most dominant endophyte, but increased resistant species abundance. By functional trait assessments, a great number of dominant endophytes displayed multiple PGP traits and Cd tolerance. Interestingly, soil HM-contamination significantly increased the percentage of Cd tolerance isolates of Agrobacterium and Epicoccum, but significantly decreased the ration of Agrobacterium with the siderophore production ability. However, the other PGP traits of isolates from site H and N showed no significant difference. Therefore, it was suggested that D. ambrosioides might improve its HM tolerance and accumulation through harboring more HM-resistant endophytes rather than PGP endophytes, but to prove this, more work need to be conducted in the future.


Asunto(s)
Cadmio , Endófitos , Metales Pesados , Semillas , Microbiología del Suelo , Contaminantes del Suelo , Endófitos/metabolismo , Endófitos/aislamiento & purificación , Metales Pesados/metabolismo , Semillas/microbiología , Contaminantes del Suelo/metabolismo , Cadmio/metabolismo , Biodiversidad , Bacterias/clasificación , Bacterias/metabolismo , Bacterias/aislamiento & purificación , Bacterias/genética , Suelo/química , Biodegradación Ambiental , Raíces de Plantas/microbiología
4.
Nutr J ; 21(1): 76, 2022 12 29.
Artículo en Inglés | MEDLINE | ID: mdl-36581871

RESUMEN

BACKGROUND: Consumption of high fructose corn syrup sweetened drinks and diet soft drinks has increased in the United States. However, the relationship between the intake of high fructose corn syrup sweetened drinks and diet soft drinks, and serum sodium has been scarcely studied. Our objective is to evaluate the relation between intake of high fructose corn syrup sweetened drinks and diet soft drinks, and serum sodium, and explore the possible effect modifiers in a nationally representative sample of adults from the United States. METHODS: We conducted a cross-sectional study using data from the National Health and Nutrition Examination Survey 2003-2006. The study participants included 6989 adults aged ≥18 years. Using survey-weighted generalized linear regression analyses, we investigated the relationship between high fructose corn syrup sweetened drink, diet soft drink consumption, and serum sodium. Consumption of high fructose corn syrup sweetened drinks and diet soft drinks was evaluated through a food-frequency questionnaire. RESULTS: Serum sodium levels increased as high fructose corn syrup sweetened drink intake increased. Serum sodium levels were higher in participants in the highest high fructose corn syrup sweetened drink consumption quantile, compared with those in the lowest high fructose corn syrup sweetened drink intake quantile (p = 0.020). The multivariate betas for serum sodium, according to the corresponding high fructose corn syrup sweetened drink intake quantiles, were 0.16, 0.19, and 0.21, respectively (P for trend = 0.051). We found no relationship between diet soft drink consumption and serum sodium after adjustment of confounding. (multivariate P > 0.05). CONCLUSION: There was a a step-wise increase in serum sodium concentration with increasing consumption of HFCS sweetened beverages. Even moderate HFCS sweetened soft drink intake was associated with an elevated serum sodium level - a risk factor for hypertension.


Asunto(s)
Jarabe de Maíz Alto en Fructosa , Bebidas Azucaradas , Adulto , Humanos , Estados Unidos , Adolescente , Jarabe de Maíz Alto en Fructosa/efectos adversos , Encuestas Nutricionales , Estudios Transversales , Dieta , Bebidas Gaseosas , Fructosa/efectos adversos , Bebidas
5.
J Cell Biochem ; 120(1): 836-847, 2019 01.
Artículo en Inglés | MEDLINE | ID: mdl-30125989

RESUMEN

Long noncoding RNAs (lncRNAs) have been reported to be involved in several neurological pathogenesis conditions including cerebral ischemia. In the current study, the functions of lncRNA EFNA3 on hypoxia-injured rat adrenal pheochromocytoma (PC-12) cells and the underlying molecular mechanism were studied. The expression of lncRNA EFNA3 was silenced by short hairpin RNA transfection, after which the cells were subjected with hypoxia. Cell viability, migration, invasion, and apoptosis were, respectively, determined by trypan blue staining, Transwell assay, annexin V-fluorescein isothiocyanate (FITC)/propidium iodide (PI) double-staining, and Western blot analysis. The cross regulation between lncRNA EFNA3 and miR-101a, as well as between miR-101a and Rho associated coiled-coil containing protein kinase 2 (ROCK2) were detected by performing quantitative real-time polymerase chain reaction, RNA pull-down, RNA immunoprecipitation, luciferase activity assay, and Western blot analysis. Studies showed that lncRNA EFNA3 was highly expressed in response to hypoxia. Deletion of lncRNA EFNA3 significantly aggravated hypoxia-induced injury in PC-12 cells, as the impairment of cell viability, migration, and invasion, and the inducement of apoptosis. LncRNA EFNA3 worked as a sponging molecule for miR-101a and miR-101a suppression-protected PC-12 cells against hypoxia-induced injury even when lncRNA EFNA3 was silenced. ROCK2 was a target gene of miR-101a. ROCK2 overexpression exhibited neuroprotective activities. Besides, ROCK2 overexpression activated Wnt/ß-catenin pathway whereas it deactivated JAK/STAT pathway upon hypoxia. Our study suggests that deletion of lncRNA EFNA3 aggravates hypoxia-induced injury in PC-12 cells by upregulating miR-101a, which further targets ROCK2.


Asunto(s)
Neoplasias de las Glándulas Suprarrenales/patología , Efrina-A3/genética , Silenciador del Gen , MicroARNs/genética , Feocromocitoma/patología , ARN Largo no Codificante/genética , Regulación hacia Arriba/genética , Neoplasias de las Glándulas Suprarrenales/genética , Animales , Apoptosis/genética , Hipoxia de la Célula/genética , Movimiento Celular/genética , Supervivencia Celular/genética , Invasividad Neoplásica/genética , Células PC12 , Feocromocitoma/genética , Plásmidos/genética , ARN Interferente Pequeño/genética , Ratas , Transfección , Quinasas Asociadas a rho/genética , Quinasas Asociadas a rho/metabolismo
6.
Neurochem Res ; 43(3): 581-590, 2018 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-29247275

RESUMEN

To explore the effect of microRNA-374a (miR-374a) on chemical hypoxia-induced pheochromocytoma (PC12) cell damage by mediating growth arrest and the DNA damage-45 alpha (GADD45α)/c-Jun N-terminal kinase (JNK) signaling pathway. PC12 cells were divided into a Control group (no treatment), Model group (treated with CoCl2 for 24 h), negative control (NC) group (transfected with miR-374a negative control sequence and treated with CoCl2 for 24 h), and miR-374a mimic group (transfected with miR-374a mimics and treated with CoCl2 for 24 h). The viability and apoptosis of PC12 cells were determined by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay and flow cytometry, while the mitochondrial membrane potential (MMP) and reactive oxygen species (ROS) content were assessed by Rh123 and dichloro-dihydro-fluorescein diacetate (DCFH-DA) methods. The expression of miR-374a and GADD45α/JNK proteins was detected using quantitative reverse transcription-polymerase chain reaction (qRT-PCR) and Western blot. A significant decrease was found in the survival rate, MMP and miR-374a expression, while an increase was shown in the ROS content and GADD45α and p-JNK expression in hypoxic PC12 cells (all P < 0.05). A luciferase reporter gene assay demonstrated that GADD45α is the target gene of miR-374a. When transfected with miR-374a mimics, hypoxic PC12 cells showed an obvious elevation in survival rate and MMP but a great reduction in cell apoptosis and ROS content, as well as in the expression of GADD45α and p-JNK proteins (all P < 0.05). MiR-374a can protect PC12 cells against hypoxia-induced injury by inhibiting the GADD45α/JNK pathway, enhancing cell viability, suppressing oxidative stress, and inhibiting cell apoptosis, thereby becoming a potential therapeutic target for hypoxic damage.


Asunto(s)
Hipoxia/genética , Hipoxia/metabolismo , Sistema de Señalización de MAP Quinasas/genética , MicroARNs/metabolismo , Animales , Apoptosis/genética , Supervivencia Celular/fisiología , Proteínas Quinasas JNK Activadas por Mitógenos/metabolismo , Potencial de la Membrana Mitocondrial/efectos de los fármacos , Estrés Oxidativo/fisiología , Células PC12 , Ratas , Especies Reactivas de Oxígeno/metabolismo
7.
Front Neurosci ; 18: 1382871, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38841095

RESUMEN

Introduction: MScanFit is a model-based algorithm for motor unit number estimation (MUNE) from compound muscle action potential (CMAP) scan data. It is a clinically applicable tool because of its quick and automatic implementation. Electrodes with different recording areas were employed to record CMAP scan data in existing studies. However, the effect of electrode recording area on MScanFit MUNE and other CMAP scan parameters has not been studied. Methods: CMAP scan was performed on the abductor pollicis brevis muscle of both hands on 14 healthy subjects using three different electrodes with recording areas of 10 mm × 10 mm, 11 mm × 14 mm, and 22 mm × 26 mm, respectively. Motor unit number was estimated using MScanFit for each CMAP scan. Two motor unit number index parameters, i.e., D50 and step index (STEPIX), were also derived from the CMAP scan data. Results: No significant difference in D50, STEPIX, and MScanFit MUNE was observed across three different electrode recording areas, although the amplitude of CMAP decreased significantly when a larger electrode was used. Intraclass correlation coefficients of 0.792 and 0.782 were obtained for MScanFit MUNE and STEPIX, respectively. Discussion: Compared with CMAP amplitude, D50, STEPIX, and MScanFit MUNE are less sensitive to variation in electrode recording area. However, the repeatability of MScanFit MUNE could be compromised by the inconsistency in the electrode recording area.

8.
Med Biol Eng Comput ; 62(6): 1911-1924, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38413518

RESUMEN

Micro-expressions (MEs) play such an important role in predicting a person's genuine emotions, as to make micro-expression recognition such an important resea rch focus in recent years. Most recent researchers have made efforts to recognize MEs with spatial and temporal information of video clips. However, because of their short duration and subtle intensity, capturing spatio-temporal features of micro-expressions remains challenging. To effectively promote the recognition performance, this paper presents a novel paralleled dual-branch attention-based spatio-temporal fusion network (PASTFNet). We jointly extract short- and long-range spatial relationships in spatial branch. Inspired by the composite architecture of the convolutional neural network (CNN) and long short-term memory (LSTM) for temporal modeling, we propose a novel attention-based multi-scale feature fusion network (AMFNet) to encode features of sequential frames, which can learn more expressive facial-detailed features for it implements the integrated use of attention and multi-scale feature fusion, then design an aggregation block to aggregate and acquire temporal features. At last, the features learned by the above two branches are fused to accomplish expression recognition with outstanding effect. Experiments on two MER datasets (CASMEII and SAMM) show that the PASTFNet model achieves promising ME recognition performance compared with other methods.


Asunto(s)
Redes Neurales de la Computación , Humanos , Atención/fisiología , Expresión Facial , Emociones/fisiología , Algoritmos , Procesamiento de Imagen Asistido por Computador/métodos , Reconocimiento de Normas Patrones Automatizadas/métodos
9.
Mol Neurobiol ; 2024 Mar 09.
Artículo en Inglés | MEDLINE | ID: mdl-38460079

RESUMEN

Aging is an inevitable natural process with time-dependent dysfunction and the occurrence of various diseases, which impose heavy burdens on individuals, families, and society. It has been reported that NLRP3 inflammasome-induced pyroptosis contributes significantly to age-related diseases and aging, while TXNIP is suggested to be involved in regulating pyroptosis mediated by NLRP3. However, the mechanism between TXNIP and NLRP3 inflammasome is still unclear. In this study, we used HT-22 cells to explore the effect of TXNIP on pyroptosis and its potential association with the aging. Also, we delved into the underlying mechanisms. Our findings revealed that TXNIP significantly augmented pyroptosis in HT-22 cells, primarily by enhancing the activation of the NLRP3 inflammasome and promoting the release of proinflammatory cytokines. Remarkably, as TXNIP levels increased, we observed a corresponding rise in the number of p16-positive cells, which is indicative of aging. Furthermore, we conducted experiments to modulate the improvement of TXNIP on NLRP3 inflammasome-induced pyroptosis, that is, the PI3K activator 740 Y-P and the PKA activator DC2797 inhibited the effect, while the PI3K inhibitor LY294002 and the PKA inhibitor H89 enhanced the effect. In conclusion, our study demonstrated that TXNIP regulates NLRP3 inflammasome-induced pyroptosis in HT-22 cells related to aging via the PI3K/Akt and cAMP/PKA pathways.

10.
Exp Neurol ; 372: 114617, 2024 02.
Artículo en Inglés | MEDLINE | ID: mdl-38007209

RESUMEN

BACKGROUND: The prevalence of vascular cognitive impairment induced by chronic cerebral ischemia (CCI) is increasing year by year. Cognitive-exercise dual-task intervention has shown beneficial effects on improving cognitive performance in ischemic patients. It is well known that the tyrosine kinase ligand-receptor (Ephrin-Eph) system plays an important role in synaptic transmission and that the cAMP/PKA pathway is associated with cognitive function. However, it is unclear whether they are responsible for the dual-task improving cognitive impairment in CCI. METHODS: Bilateral common carotid artery occlusion (BCCAO) in SD rats was used to establish the CCI model. The effects of dual-task and single-task on cognitive function and the expressions of EphrinA3, EphA4, cAMP, and PKA in rats were detected by the novel object recognition (NOR) test, immunofluorescence staining, quantitative real-time polymerase chain reaction (qPCR), and Western blotting (WB), respectively. Overexpression or knockdown of EphrinA3 in astrocytes or rats were constructed by lentivirus infection to verify the effects of EphrinA3/EphA4 on the cAMP/PKA pathway. RESULTS: After dual-task intervention, the discrimination index of rats increased significantly compared with the rats in the CCI group. The expressions of EphrinA3 and EphA4 were decreased, while the expressions of cAMP and PKA were increased. Furthermore, knockdown of EphrinA3 alleviated the trend of CCI-induced cognitive decline in rats and OGD-stimulated cellular damage. It also increased cAMP/PKA expression in hippocampal neurons. CONCLUSION: Cognitive-exercise dual-task can significantly improve the cognitive impairment induced by CCI, and this effect may be better than that of the cognitive or exercise single-task intervention. The improvement may be related to the inhibition of EphrinA3/EphA4, followed by activation of the cAMP/PKA pathway.


Asunto(s)
Isquemia Encefálica , Disfunción Cognitiva , Humanos , Ratas , Animales , Ratas Sprague-Dawley , Hipocampo/metabolismo , Isquemia Encefálica/complicaciones , Isquemia Encefálica/metabolismo , Disfunción Cognitiva/etiología , Disfunción Cognitiva/metabolismo , Cognición
11.
J Alzheimers Dis ; 92(1): 195-208, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36710678

RESUMEN

BACKGROUND: Alzheimer's disease (AD) disturbs many patients and family. However, little progress has been made in finding effective treatments. Given AD is a multifactorial disease, luteolin and exercise combination therapy may be more effective than monotherapy. OBJECTIVE: To explore the therapeutic effect and underlying mechanisms of luteolin and exercise combination therapy in AD treatment. METHODS: This study utilized a validated mouse model of AD by bilateral injection of amyloid-ß (Aß)1-42 oligomers into the CA1 region of the hippocampus. By combining with animal behavioral test, thioflavin T detection, immunofluorescence and western blot test, the cognitive-enhancing effects of luteolin and exercise combination therapy and the underlying mechanisms were investigated. RESULTS: Luteolin (100 mg/kg/d) combined with exercise could significantly improve the performance of AD model mice in novel object recognition test, and the improvement was greater than that of monotherapy. Further experiments showed that luteolin and exercise alone or in combination could reverse the increase of Aß content, the activation of astrocytes and microglia, and the decrease of the level of autophagy in hippocampus and cortex in AD model induced by Aß1-42 oligomers. While the combination therapy involved more intact hippocampal and cortical areas, with greater degree of changes. CONCLUSION: Luteolin and exercise combination therapy prevented Aß1-42 oligomers-induced cognitive impairment, possibly by decreasing neuroinflammation and enhancing autophagy. The luteolin and exercise combination therapy may be a useful therapeutic option for preventing and/or delaying the progression of memory dysfunction of AD.


Asunto(s)
Enfermedad de Alzheimer , Disfunción Cognitiva , Ratones , Animales , Enfermedad de Alzheimer/tratamiento farmacológico , Luteolina/farmacología , Enfermedades Neuroinflamatorias , Péptidos beta-Amiloides/metabolismo , Hipocampo/metabolismo , Autofagia , Modelos Animales de Enfermedad
12.
BMJ Open ; 13(6): e067293, 2023 06 30.
Artículo en Inglés | MEDLINE | ID: mdl-37399446

RESUMEN

OBJECTIVES: To summarise the effects of various types of aerobic exercise on the global cognitive function of the elderly with mild cognitive impairment (MCI). DESIGN: A meta-analysis of randomised controlled trials (RCTs). DATA SOURCES: PubMed, EMBASE and the Cochrane Library were searched for clinical RCTs from the earliest available records to March 2022. ELIGIBILITY CRITERIA FOR SELECTING STUDIES: We included RCTs of subjects older than 60 years with MCI. The outcome indicators of cognitive function of interest were the Mini-Mental State Examination (MMSE) and the Montreal Cognitive Assessment (MoCA). DATA EXTRACTION AND SYNTHESIS: Two researchers independently screened the literature, extracted data and evaluated the quality of the included studies, with disagreements resolved by a third researcher. The Cochrane Handbook for Systematic Reviews of Interventions was used to assess the risk of bias. Meta-analysis was performed by Review Manager V.5.3 software. Random-effect models were used for meta-analysis. RESULTS: A total of 1680 patients who participated in 20 RCTs were included in this study. Based on outcomes of MMSE analysis, the aerobic exercise, which was beneficial for global cognitive function in MCI patients, included multicomponent aerobic exercise (MD=1.79, 95% CI (1.41 to 2.17), p<0.01) and mind-body exercise (MD=1.28, 95% CI (0.83 to 1.74), p<0.01). The results of the meta-analysis of conventional aerobic exercise (MD=0.51, 95% CI (0.09 to 0.93), p=0.02) turned out to be statistically insignificant after sensitivity analysis (MD=0.14, 95% CI (-0.47 to 0.75), p=0.65). With the evaluation of MoCA, multicomponent aerobic exercise (MD=5.74, 95% CI (5.02 to 6.46), p<0.01), mind-body exercise (MD=1.29, 95% CI (0.67 to 1.90), p<0.01) and conventional aerobic exercise (MD=2.06, 95% CI (1.46 to 2.65), p<0.01) were showed significant beneficial effects for the patient. However, there was a high degree of heterogeneity between the results of multicomponent aerobic exercise (MMSE) and conventional aerobic exercise (MoCA), which was analysed and explored. CONCLUSIONS: In general, multicomponent aerobic exercise and mind-body exercise were beneficial in improving global cognitive function in the elderly with MCI. Nevertheless, the improvement effect of mind-body exercise is more reliable compared with multicomponent aerobic exercise and conventional aerobic exercise. PROSPERO REGISTRATION NUMBER: CRD42022327386.


Asunto(s)
Disfunción Cognitiva , Anciano , Humanos , Cognición , Disfunción Cognitiva/terapia , Ejercicio Físico , Terapia por Ejercicio , Ensayos Clínicos Controlados Aleatorios como Asunto
13.
Aging Dis ; 2023 Aug 11.
Artículo en Inglés | MEDLINE | ID: mdl-37611906

RESUMEN

The risk of developing chronic illnesses and disabilities is increasing with age. To predict and prevent aging, biomarkers relevant to the aging process must be identified. This paper reviews the known molecular, cellular, and physiological biomarkers of aging. Moreover, we discuss the currently available technologies for identifying these biomarkers, and their applications and potential in aging research. We hope that this review will stimulate further research and innovation in this emerging and fast-growing field.

14.
BMC Sports Sci Med Rehabil ; 15(1): 4, 2023 Jan 05.
Artículo en Inglés | MEDLINE | ID: mdl-36600322

RESUMEN

BACKGROUND: After stroke, an abnormal gait pattern gradually leads to knee pain and joint lesions, resulting the gait instability. However, the correlation between the knee hyperextension and gait pattern, the meniscus volume, and the water content of meniscus in paretic and non-paretic legs has not been fully investigated. Moreover, most of physicians tend to ignore this knee hyperextension. This study attempted to emphasize the importance of knee hyperextension using gait analysis and Magnetic resonance imaging (Trial registration number ChiCTR2000039641, date of registration 04/11/2020). METHODS: Eight patients with chronic hemiplegic (6 male, 2 female) volunteered to participate in this study. Participants was recruited if they had a hemiplegia following a stroke occurring more than 6 months, had an ability to walk 10 m without aids, had a Function Ambulation Category level at least 3 and above, and had a hemiplegic lower extremity identified as Brunnstrom state III or above identification. The spatial-temporal gait parameters and kinematic parameters in the paretic and the non-paretic legs and the percentage of free water content in deep and shallow layers. RESULTS: Longer time since hemiplegia led to larger angles of knee hyperextension (R = 0.56, p = 0.016), larger angles of knee hyperextension led to more tears in meniscus (R = - 0.53, - 0,57 and - 0.70), and larger angles of knee hyperextension decreased water content of the lateral meniscus in the non-paretic leg (R = - 0.91) but increased water content of the medial meniscus (R = 0.53 and 0.63). CONCLUSIONS: The knee hyperextension could not be ignored by physicians and needed to be diagnosed and treated as early as possible, the time since hemiplegia could be an indicator of sign of knee hyperextension.

15.
Brain Res Bull ; 202: 110761, 2023 10 01.
Artículo en Inglés | MEDLINE | ID: mdl-37714275

RESUMEN

Aging-related cognitive impairment (ARCI) is rapidly becoming a healthcare priority. However, there is currently no excellent cure for it. Cognitive-exercise dual-task intervention (CEDI) is a promising method to improve ARCI, while the underlying mechanisms remain unclear. Long non-coding RNAs (lncRNAs) and microRNAs (miRNAs) are involved in the onset, development, and rehabilitation of ARCI. This study aimed to investigate the effects of CEDI and the role of regulation of the lncRNA NEAT1/miR-124-3p on the caveolin-1-PI3K/Akt/GSK3ß pathway in CEDI improving cognitive function. Forty 18-month-old natural aging rats were randomly assigned to four groups: exercise training group, cognitive training group, CEDI group, and aging control group, and underwent 12 weeks of intervention. A novel object recognition test was performed to determine the cognitive function, and the hippocampus was separated three days after the behavioral tests for further molecular detection. In an in vitro study, the mouse hippocampal neuronal cell line HT22 was cultured. MiR-124-3p and lncRNA NEAT1 were over-expressed or down-expressed, respectively. The expressions of related proteins, lncRNA, and miRNA were examined by WB and/or qRT-PCR. The results showed that compared with the aging control group, the CEDI group had a higher discrimination index, and significantly decreased the expressions of lncRNA NEAT1, and the protein expressions of caveolin-1 and p-GSK3ß, while significantly increased the expressions of miR-124-3p, and the protein expressions of p-PI3K and p-Akt. Inhibition of the lncRNA NEAT1 could significantly increase the protein expressions of p-PI3K and p-Akt in HT22 cells. Upregulation of miR-124-3p decreased the protein expressions of caveolin-1 and p-GSK3ß, and increased the protein expressions of p-PI3K and p-Akt significantly. Inhibition of miR-124-3p had the opposite effects. Our study demonstrated that CEDI improved cognitive function in aging rats better than a single intervention. The mechanisms of cognitive improvement could be related to the regulation of the lncRNA NEAT1/miR-124-3p on the caveolin-1-PI3K/Akt/GSK3ß pathway.


Asunto(s)
Disfunción Cognitiva , MicroARNs , ARN Largo no Codificante , Animales , Ratones , Ratas , Envejecimiento , Caveolina 1 , Cognición , Disfunción Cognitiva/terapia , Glucógeno Sintasa Quinasa 3 beta , MicroARNs/genética , Fosfatidilinositol 3-Quinasas , Proteínas Proto-Oncogénicas c-akt , ARN Largo no Codificante/genética
16.
J Fungi (Basel) ; 9(4)2023 Apr 12.
Artículo en Inglés | MEDLINE | ID: mdl-37108919

RESUMEN

Stellera chamaejasme L. is a widely distributed poisonous plant in Chinese degraded grasslands. To investigate the role of endophytic fungi (EF) in S. chamaejasme's quick spread in grasslands, the endophytic fungal community of S. chamaejasme was studied through culture-dependent and culture-independent methods, and the plant-growth-promoting (PGP) traits of some culturable isolates were tested. Further, the growth-promoting effects of 8 isolates which showed better PGP traits were evaluated by pot experiments. The results showed that a total of 546 culturable EF were isolated from 1114 plant tissue segments, and the colonization rate (CR) of EF in roots (33.27%) was significantly higher than that in shoots (22.39%). Consistent with this, the number of specific types of EF was greater in roots (8 genera) than in shoots (1 genus). The same phenomenon was found in culture-independent study. There were 95 specific genera found in roots, while only 18 specific genera were found in shoots. In addition, the dominant EF were different between the two study methods. Cladosporium (18.13%) and Penicillium (15.93%) were the dominant EF in culture-dependent study, while Apiotrichum (13.21%) and Athelopsis (5.62%) were the dominant EF in culture-independent study. PGP trait tests indicated that 91.30% of the tested isolates (69) showed phosphorus solubilization, IAA production, or siderophores production activity. The benefit of 8 isolates on host plants' growth was further studied by pot experiments, and the results indicated that all of the isolates can improve host plants' growth. Among them, STL3G74 (Aspergillus niger) showed the best growth-promotion effect; it can increase the plant's shoot and root dry biomass by 68.44% and 74.50%, respectively, when compared with the controls. Our findings revealed that S. chamaejasme has a wide range of fungal endophytic assemblages, and most of them possess PGP activities, which may play a key role in its quick spread in degraded grasslands.

17.
BMJ Open ; 12(12): e065425, 2022 12 16.
Artículo en Inglés | MEDLINE | ID: mdl-36526312

RESUMEN

OBJECTIVES: To analyse detailed trends in adult obesity from 2003 to 2018 in the USA, and provide the latest national estimates of adult obesity in 2017-2018. DESIGN, SETTING AND PARTICIPANTS: Analysis of data, including measured height and weight, obtained from 42 266 adults aged ≥20 years from the National Health and Nutrition Examination Survey, a cross-sectional, nationally representative sample of the US population. EXPOSURE: Survey period. PRIMARY OUTCOME MEASURES: The mean body mass index (BMI) and prevalence of overweight and obesity. RESULTS: In 2017-2018, the prevalence of overweight (including obesity, BMI ≥25 kg/m2) and obesity (BMI ≥30 kg/m2) was 73.8% (95% CI 71.1% to 76.4%) and 42.8% (95% CI 39.5% to 46.1%), respectively. From 2003 to 2018, a significant increase in the prevalence of overweight (including obesity, overall adjusted OR for 2017-2018 vs 2003-2004, 1.08 (95% CI 1.04 to 1.13) and obesity (overall adjusted OR for 2017-2018 vs 2003-2004, 1.15 (95% CI 1.10 to 1.21) was found among American adults. However, annual changes in mean BMI and the prevalence of overweight and obesity did not differ significantly before and after 2009-2010. The prevalence of overweight and obesity varied significantly by age, sex, race, education, daily total energy intake, economic conditions and physical activity status (all p<0.05). CONCLUSIONS: Although the prevalence of adult obesity continues to rise, there have been no significant changes in the annual growth of adult obesity prevalence between 2003-2004 and 2017-2018. In 2017-2018, the prevalence of obesity was 42.8%, which equates to 76 million American adults at risk for serious and costly chronic conditions. The prevalence of obesity was higher among older adults (aged 60-69 years), females, non-Hispanic blacks, and those who did not graduate college, were physically inactive, reported lower daily total energy intake and had poor economic status.


Asunto(s)
Obesidad , Sobrepeso , Femenino , Humanos , Estados Unidos/epidemiología , Anciano , Índice de Masa Corporal , Sobrepeso/epidemiología , Encuestas Nutricionales , Estudios Transversales , Obesidad/epidemiología , Prevalencia
18.
Mol Neurobiol ; 59(2): 778-799, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34775541

RESUMEN

Parkinson's disease remains one of the leading neurodegenerative diseases in developed countries. Despite well-defined symptomology and pathology, the complexity of Parkinson's disease prevents a full understanding of its etiological mechanism. Mechanistically, α-synuclein misfolding and aggregation appear to be central for disease progression, but mitochondrial dysfunction, dysfunctional protein clearance and ubiquitin/proteasome systems, and neuroinflammation have also been associated with Parkinson's disease. Particularly, neuroinflammation, which was initially thought to be a side effect of Parkinson's disease pathogenesis, has now been recognized as driver of Parkinson's disease exacerbation. Next-generation sequencing has been used to identify a plethora of long noncoding RNAs (lncRNA) with important transcriptional regulatory functions. Moreover, a myriad of lncRNAs are known to be regulators of inflammatory signaling and neurodegenerative diseases, including IL-1ß secretion and Parkinson's disease. Here, LncZFAS1 was identified as a regulator of inflammasome activation, and pyroptosis in human neuroblast SH-SY5Y cells following MPP+ treatment, a common in vitro Parkinson's disease cell model. Mechanistically, TXNIP ubiquitination through MIB1 E3 ubiquitin ligase regulates NLRP3 inflammasome activation in neuroblasts. In contrast, MPP+ activates the NLPR3 inflammasome through miR590-3p upregulation and direct interference with MIB1-dependent TXNIP ubiquitination. LncZFAS overexpression inhibits this entire pathway through direct interference with miR590-3p, exposing a novel research idea regarding the mechanism of Parkinson's disease.


Asunto(s)
Enfermedades Neuroinflamatorias , ARN Largo no Codificante , Ubiquitina-Proteína Ligasas , Humanos , Inflamasomas/metabolismo , MicroARNs/genética , Proteína con Dominio Pirina 3 de la Familia NLR/genética , Enfermedades Neuroinflamatorias/inducido químicamente , Piroptosis , ARN Largo no Codificante/genética , Ubiquitina-Proteína Ligasas/genética
19.
Complement Med Res ; 29(5): 393-401, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35605593

RESUMEN

BACKGROUND: In China, 45% of stroke patients suffer from poststroke shoulder pain, which brings about many obstacles to further rehabilitation. To date, there have been a few studies evaluating the effects of acupuncture or massage in treating poststroke shoulder pain, and good effects have been shown. However, better clinical treatments are still needed. OBJECTIVE: To explore a more effective treatment for poststroke shoulder pain, the clinical effects of moxibustion plus acupuncture were assessed. METHODS: Sixty patients were randomly divided into the control and intervention groups. The control group received a standard stroke treatment protocol including acupuncture, and the intervention group was given moxibustion combined with acupuncture. The visual analogue scale (VAS), National Institutes of Health Stroke Scale (NIHSS), Fugl-Meyer motor assessment, Barthel Index, and 17-item Hamilton Rating Scale for Depression (HAMD-17) were applied, and differences were analyzed. RESULTS: After 4 weeks of treatment, compared with the control group, the intervention group demonstrated significant improvement in Fugl-Meyer motor assessment and HAMD-17 (both p < 0.01) as well as in the VAS, NIHSS, and Barthel Index (all p < 0.05). CONCLUSION: Moxibustion plus acupuncture treatment can alleviate poststroke shoulder pain, improve upper limb motor function and the ability to perform activities of daily living, and relieve patients' depression.


Asunto(s)
Terapia por Acupuntura , Moxibustión , Accidente Cerebrovascular , Humanos , Estados Unidos , Puntos de Acupuntura , Dolor de Hombro/etiología , Dolor de Hombro/terapia , Actividades Cotidianas , Proyectos Piloto , Terapia por Acupuntura/métodos , Accidente Cerebrovascular/complicaciones , Accidente Cerebrovascular/terapia , Extremidad Superior
20.
Front Neurol ; 13: 1027104, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36353135

RESUMEN

Background: Evidence for the efficacy of cognitive-motor dual-task (CMDT) training in patients with post-stroke cognitive impairment (PSCI) and no dementia is still lacking. More importantly, although some studies on the cognitive effect of CMDT training show an improvement in cognitive performance, the results are still controversial, and the intervention mechanism of CMDT training on cognitive function improvement is not clear. The main purpose of this study was to analyze the effects of CMDT training on cognitive function, neuron electrophysiology, and frontal lobe hemodynamics in patients with PSCI. Methods: Here we tested the effects of CMDT training on cognitive function in PSCI patients. Forty subjects who met the criteria of PSCI were randomly assigned to control and experimental groups. CMDT training or cognitive task (CT) training was administered to each patient in the experimental and control groups, respectively. All subjects performed Mini-mental State Examination (MMSE) and Montreal Cognitive Assessment (MoCA) scale before and after the intervention, and the event-related potentials (ERP) and functional near-infrared spectroscopy (fNIRS) were used to evaluate the changes in neuron electrophysiology and hemodynamics. Results: Forty patients were randomized across Beijing Rehabilitation Hospital Capital Medical University in Beijing. At the end of the intervention, 33 subjects completed the experimental process. The CMDT group showed significant improvement in the MMSE (P = 0.01) and MoCA (P = 0.024) relative to the CT group. The results of ERP and fNIRS showed that CMDT training could shorten the latency of P300 (P = 0.001) and the peak time of oxygenated hemoglobin (P = 0.004). The results showed that CMDT training shortened the response time of central neurons and significantly increased the rate of oxygen supply to the frontal lobe. Conclusion: CMDT training in patients with PSCI improved global cognitive function, which was supported by the improved neural efficiency of associated brain areas. Clinical trial registration: http://www.chictr.org.cn, identifier ChiCTR2000034862.

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