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result(s) for
"Song, Haidi"
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College Students with Intellectual and Developmental Disabilities Use Assistive Technology in Living, Learning, and Working Tasks: A 20-Year Systematic Review and Meta-Analysis
by
Hendrickson, Jo M.
,
Woods-Groves, Suzanne
,
Rodgers, Derek B.
in
Academic achievement
,
Access to information
,
Adaptive technology
2023
Within the US there are over 300 postsecondary education (PSE) programs for students with intellectual and developmental disabilities (IDD). College students enrolled in PSE programs for students with IDD often require support in using assistive technology (AT) to complete living, learning, and working tasks. To date, there is no systematic review or meta-analysis that examines interventions within these programs that integrate AT to teach these skills. We systematically reviewed 43 intervention studies that targeted 235 students’ use of AT to complete living, learning, and working tasks. The average age of students was 21.5 yrs (R = 18.7 to 27.5). Most studies used mobile devices and applications to target living (44.2%), learning (37.2%), and working (18.6%) skills. Forty-two of 43 studies used visual cues and systematic prompting and/or systematic instruction. On average, interventions were 10 sessions. Eighty-seven percent of studies reported treatment fidelity, 94% reported interobserver agreement, and 67% reported social validity. Most studies used correct number of responses or task analysis steps completed as the dependent variable. The metaanalytic results indicated interventions were overall effective at improving student outcomes. An analysis of moderators revealed a significant difference for study quality but no significant difference for disability type, study duration, and area targeted.
Journal Article
Association of serum uric acid to all-cause and cardiovascular mortality in patients with cardiovascular disease
2024
Serum uric acid (SUA) has been linked to mortality in heart failure, hypertension, diabetes, hyperlipidemia, obstructive sleep apnea, and metabolic dysfunction-associated fatty liver disease. However, data are lacking on how it affects the mortality risk of patients with cardiovascluar disease (CVD). This study evaluated the data of 4 308 individuals from the National Health and Nutrition Examination Survey 1999–2008 using multivariate Cox proportional hazards regression, trend, restricted cubic splines (RCS), subgroup and inflection point analyses. All-cause and cardiovascular mortality accounted for 42.8% and 17.6% of cases, respectively, over a median 80- month follow-up. Upon control for confounding variables, no linear trend was seen in the Cox proportional hazards regression analysis between SUA and all-cause (P = 0.001) or cardiovascular death (P = 0.007) mortality. On the RCS analysis, SUA showed an L-shaped connection with all-cause (non-linear P < 0.001) and cardiovascular mortality (non-linear P = 0.003) mortality. On the inflection point analysis, patients with CVD and an SUA ≥ 6.127 mg/dL had an all-cause mortality hazard ratio of 1.146 (95% confidence interval, 1.078–1.217; P < 0.001), while those with CVD and an SUA ≥ 5.938 mg/dL had a cardiovascular mortality hazard ratio of 1.123 (95% confidence interval, 1.03–1.225; P = 0.007). In patients with CVD, higher SUA was non-linearly correlated with all-cause and cardiovascular mortality.
Journal Article
The cardiovascular toxicity of polystyrene microplastics in rats: based on untargeted metabolomics analysis
2024
Polystyrene microplastics (PS-MPs) exhibit multi-target, multi-dimensional, chronic, and low toxicity to the cardiovascular system. They enter the bloodstream through the gastrointestinal tract and respiratory system, altering blood parameters and conditions, inducing thrombotic diseases, and damaging myocardial tissue through the promotion of oxidative stress and inflammatory responses in myocardial cells. However, many of the links and mechanisms remain unclear.
In this study, 48 wistar rats were randomly divided into four groups and exposed to different concentrations of PS-MPs: control group (0 mg/kg/d), low dose group (0.5 mg/kg/d), middle dose group (5 mg/kg/d) and high dose group (50 mg/kg/d), with 12 rats in each group. After 90 consecutive days of intragastric administration of PS-MPs, biochemical markers in myocardium, aorta and blood were detected, and HE staining was performed to observe the toxic effects of PS-mps on cardiovascular system. Furthermore, non-targeted metabolomics methods were used to analyze the effect of PS-MPs exposure on the metabolism of cardiovascular system in rats, and to explore its potential molecular mechanism.
The results revealed no pathological changes in the heart and aorta following PS-MPs exposure. However, the myocardial enzyme levels in the high dose PS-MPs group of rats showed a significant increase. Moreover, exposure to polystyrene microplastics caused a disorder in lipid metabolism in rats, and led to an increase in indicators of inflammation and oxidative stress in myocardial and aortic tissues, but resulted in a decrease in the level of IL-6. Untargeted metabolomics results showed that metabolites with antioxidant and anti-inflammatory effects, including equol and 4-hydroxybenzoic acid, were significantly upregulated.
These results suggest that long-term exposure to high concentrations of PS-MPs may lead to abnormal lipid metabolism and cardiovascular system damage. The mechanism may be related to oxidative stress and inflammatory response. Exogenous antioxidants and changes in own metabolites may have a protective effect on the injury. Therefore, understanding the toxicological mechanism of PS-MPs not only helps to elucidate its pathogenesis, but also provides new ideas for the treatment of chronic diseases.
Journal Article
Quercetin alleviates neonatal hypoxic-ischemic brain injury by inhibiting microglia-derived oxidative stress and TLR4-mediated inflammation
2020
Objective and designMicroglia stimulated by oxygen glucose deprivation (OGD) were treated with quercetin to investigate the effect on oxidative stress and the inflammatory response and to explore whether toll-like receptor 4 (TLR4) signaling was involved. In addition, the effect of quercetin on the neurological functions of neonatal mice with hypoxic-ischemic brain injury (HIBI) was examined.Materials and subjectsMouse BV2 microglial cells and postnatal day 7 neonatal mice were used.TreatmentA predetermined concentration of quercetin was used in cell experiments. Quercetin was injected i.p. (50 mg/kg) at three time points after HI insult: 0, 24, and 48 h.MethodsCell viability assay, Western blotting, qRT-RCR, ELISA, HIBI model construction and behavioral tests.ResultsThis study first showed that quercetin protected BV2 cells from OGD-induced damage and reversed the changes in microglial oxidative stress-related molecules. Second, quercetin inhibited OGD-induced expression of inflammatory factors in BV2 cells and suppressed TLR4/MyD88/NF-κB signaling. Finally, quercetin was disclosed to be effective in mitigating cerebral infarct volume and cognitive and motor function deficits in HIBI mice.ConclusionThese results suggest that the neuroprotective effect of quercetin in HIBI mice is partially due to the inhibition of oxidative stress and TLR4-mediated inflammatory responses in activated microglia.
Journal Article
Nanofiber Composite Reinforced Organohydrogels for Multifunctional and Wearable Electronics
by
Gao, Yuxin
,
Yao, Hang
,
Su, Qin
in
Bonding strength
,
Electromagnetic interference
,
Electromagnetic shielding
2023
HighlightsA nanofiber composite reinforced organohydrogel with multifunctionality is prepared.The composite organohydrogel possesses multiple interfacial bondings and multi-level strengthening and toughening mechanism is proposed.The composite organohydrogel exhibits long-term strain sensing stability and can be used for high performance electromagnetic interference shielding. Composite organohydrogels have been widely used in wearable electronics. However, it remains a great challenge to develop mechanically robust and multifunctional composite organohydrogels with good dispersion of nanofillers and strong interfacial interactions. Here, multifunctional nanofiber composite reinforced organohydrogels (NCROs) are prepared. The NCRO with a sandwich-like structure possesses excellent multi-level interfacial bonding. Simultaneously, the synergistic strengthening and toughening mechanism at three different length scales endow the NCRO with outstanding mechanical properties with a tensile strength (up to 7.38 ± 0.24 MPa), fracture strain (up to 941 ± 17%), toughness (up to 31.59 ± 1.53 MJ m−3) and fracture energy (up to 5.41 ± 0.63 kJ m−2). Moreover, the NCRO can be used for high performance electromagnetic interference shielding and strain sensing due to its high conductivity and excellent environmental tolerance such as anti-freezing performance. Remarkably, owing to the organohydrogel stabilized conductive network, the NCRO exhibits superior long-term sensing stability and durability compared to the nanofiber composite itself. This work provides new ideas for the design of high-strength, tough, stretchable, anti-freezing and conductive organohydrogels with potential applications in multifunctional and wearable electronics.
Journal Article
Key Triggers of Osteoclast-Related Diseases and Available Strategies for Targeted Therapies: A Review
2017
Osteoclasts, the only cells with bone resorption functions
, maintain the balance of bone metabolism by cooperating with osteoblasts, which are responsible for bone formation. Excessive activity of osteoclasts causes many diseases such as osteoporosis, periprosthetic osteolysis, bone tumors, and Paget's disease. In contrast, osteopetrosis results from osteoclast deficiency. Available strategies for combating over-activated osteoclasts and the subsequently induced diseases can be categorized into three approaches: facilitating osteoclast apoptosis, inhibiting osteoclastogenesis, and impairing bone resorption. Bisphosphonates are representative molecules that function by triggering osteoclast apoptosis. New drugs, such as tumor necrosis factor and receptor activator of nuclear factor kappa-B ligand (RANKL) inhibitors (e.g., denosumab) have been developed for targeting the receptor activator of nuclear factor kappa-B /RANKL/osteoprotegerin system or CSF-1/CSF-1R axis, which play critical roles in osteoclast formation. Furthermore, vacuolar (H
)-ATPase inhibitors, cathepsin K inhibitors, and glucagon-like peptide 2 impair different stages of the bone resorption process. Recently, significant achievements have been made in this field. The aim of this review is to provide an updated summary of the current progress in research involving osteoclast-related diseases and of the development of targeted inhibitors of osteoclast formation.
Journal Article
Oxygen mediated oxidative couplings of flavones in alkaline water
2022
Catalyzed
oxidative C-C bond coupling reactions play an important role in the chemical synthesis of complex natural products of medicinal importance. However, the poor functional group tolerance renders them unfit for the synthesis of naturally occurring polyphenolic flavones. We find that molecular oxygen in alkaline water acts as a hydrogen atom acceptor and oxidant in
catalyst-free
(without added catalyst) oxidative coupling of luteolin and other flavones. By this facile method, we achieve the synthesis of a small collection of flavone dimers and trimers including naturally occurring dicranolomin, philonotisflavone, dehydrohegoflavone, distichumtriluteolin, and cyclodistichumtriluteolin. Mechanistic studies using both experimental and computational chemistry uncover the underlying reasons for optimal pH, oxygen availability, and counter-cations that define the success of the reaction. We expect our reaction opens up a green and sustainable way to synthesize flavonoid dimers and oligomers using the readily available monomeric flavonoids isolated from biomass and exploiting their use for health care products and treatment of diseases.
Catalysed oxidative C-C bond formation reactions are important in the synthesis of natural products, but poorly tolerated by polyphenolic flavones. Here the authors report the reactivity of molecular oxygen in alkaline water without added catalyst for the synthesis of a collection of flavone dimers and trimers.
Journal Article
Thermoplastic Elastomer‐Reinforced Hydrogels with Excellent Mechanical Properties, Swelling Resistance, and Biocompatibility
by
Wu, Yongchuan
,
Zhou, Ruigang
,
Wang, Ling
in
Animals
,
Biocompatibility
,
Biocompatible Materials - chemistry
2025
Strong and tough hydrogels are promising candidates for artificial soft tissues, yet significant challenges remain in developing biocompatible, anti‐swelling hydrogels that simultaneously exhibit high strength, fracture strain, toughness, and fatigue resistance. Herein, thermoplastic elastomer‐reinforced polyvinyl alcohol (PVA) hydrogels are prepared through a synergistic combination of phase separation, wet‐annealing, and quenching. This approach markedly enhances the crystallinity of the hydrogels and the interfacial interaction between PVA and thermoplastic polyurethane (TPU). This strategy results in the simultaneous improvement of the mechanical properties of the hydrogels, achieving a tensile strength of 11.19 ± 0.80 MPa, toughness of 62.67 ± 10.66 MJ m−3, fracture strain of 1030 ± 106%, and fatigue threshold of 1377.83 ± 62.78 J m−2. Furthermore, the composite hydrogels demonstrate excellent swelling resistance, biocompatibility, and cytocompatibility. This study presents a novel approach for fabricating strong, tough, stretchable, biocompatible, and fatigue‐ and swelling‐resistant hydrogels with promising applications in soft tissues, flexible electronics, and load‐bearing biomaterials. Thermoplastic polyurethane (TPU)‐reinforced polyvinyl alcohol (PVA) hydrogels with excellent swelling resistance and biocompatibility are prepared through a combination of phase separation, wet‐annealing, and quenching. The enhanced crystallinity of PVA macromolecular chains and the interfacial interactions between PVA and TPU contribute to the simultaneous improvement of the mechanical properties including the tensile strength, toughness, and fatigue threshold of the hydrogels.
Journal Article
Spatial Confinement Engineered Gel Composite Evaporators for Efficient Solar Steam Generation
2024
Recently, solar‐driven interfacial evaporation (SDIE) has been developed quickly for low‐cost and sustainable seawater desalination, but addressing the conflict between a high evaporation rate and salt rejection during SDIE is still challenging. Here, a spatial confinement strategy is proposed to prepare the gel composite solar evaporator (SCE) by loading one thin hydrogel layer onto the skeleton of a carbon aerogel. The SCE retains the hierarchically porous structure of carbon aerogels with an optimized water supply induced by dual‐driven forces (capillary effects and osmotic pressure) and takes advantage of both aerogels and hydrogels, which can gain energy from air and reduce water enthalpy. The SCE has a high evaporation rate (up to 4.23 kg m−2 h−1 under one sun) and excellent salt rejection performance and can maintain structural integrity after long‐term evaporation even at high salinities. The SDIE behavior, including heat distribution, water transport, and salt ion distribution, is investigated by combining theoretical simulations and experimental results. This work provides new inspiration and a theoretical basis for the development of high‐performance interfacial evaporators. The spatially confined hydrogel‐modified interfacial evaporator (SCE) is prepared in this study. Dual‐driven forces for water transportation of SCE including capillary effect and osmotic pressure ensure sufficient water supply for continuous evaporation up to 4.23 kg m−2 h−1 under one sun and excellent salt rejection performance that it can work in 20 wt.% saltwater stably for the long term.
Journal Article
Hippo cooperates with p53 to regulate lung airway mucous cell metaplasia
by
Luo, Dan
,
Lin, Xinhua
,
Yuan, Jianghong
in
Adaptor Proteins, Signal Transducing - metabolism
,
Animals
,
Cell Differentiation
2024
Airway mucous cell metaplasia is a significant feature of many chronic airway diseases, such as chronic obstructive pulmonary disease, cystic fibrosis and asthma. However, the mechanisms underlying this process remain poorly understood. Here, we employed in vivo mouse genetic models to demonstrate that Hippo and p53 (encoded by Trp53) cooperate to modulate the differentiation of club cells into goblet cells. We revealed that ablation of Mst1 (Stk4) and Mst2 (Stk3), encoding the core components of Hippo signaling, significantly reduces mucous metaplasia in the lung airways in a lipopolysaccharide (LPS)-induced lung inflammation murine model while promoting club cell proliferation in a Yap (Yap1)-dependent manner. Additionally, we showed that deleting Mst1/2 is sufficient to suppress p53 deficiency-mediated goblet cell metaplasia. Finally, single-cell RNA-sequencing analysis revealed downregulation of YAP and p53 signaling in goblet cells in human airways. These findings underscore the important role of Hippo and p53 signaling in regulating airway mucous metaplasia.
Journal Article