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1.
Stem Cells ; 42(4): 374-384, 2024 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-38280209

RESUMO

Increased fructose consumption has been elucidated to contribute to metabolic diseases. Bone is a dynamic organ that undergoes constant remodeling. However, the effects of fructose on bone health are still in dispute. Here, we identified fructose deteriorated bone mineral density while promoting the abundance of bone marrow adipose tissue. Fructose remarkably promoted the bone marrow mesenchymal stem cells' (BMMSCs) adipogenic commitment at the expense of osteogenic commitment. Fructose boosted the glycolysis of BMMSCs and inhibited phosphorylation of adenosine 5'-monophosphate-activated protein kinase (AMPK), which played a crucial role in bone-fat alteration. Our results suggested that fructose potentiated bone loss and marrow adipose tissue accumulation by suppressing AMPK activation in BMMSCs. Understanding fructose which affected bone metabolism was thus of primary importance in order to establish preventative measures or treatments for this condition.


Assuntos
Medula Óssea , Células-Tronco Mesenquimais , Medula Óssea/metabolismo , Diferenciação Celular , Proteínas Quinases Ativadas por AMP/metabolismo , Frutose/farmacologia , Frutose/metabolismo , Adipogenia , Tecido Adiposo/metabolismo , Células-Tronco Mesenquimais/metabolismo , Osteogênese , Adenosina , Células da Medula Óssea , Células Cultivadas
2.
Phys Rev Lett ; 132(16): 161603, 2024 Apr 19.
Artigo em Inglês | MEDLINE | ID: mdl-38701451

RESUMO

We study and extend the duality web unifying different decoupling limits of type II superstring theories and M theory. We systematically build connections to different corners, such as matrix theories, nonrelativistic string and M theory, tensionless (and ambitwistor) string theory, Carrollian string theory, and spin matrix limits of AdS/CFT. We discuss target space, world sheet, and worldvolume aspects of these limits in arbitrary curved backgrounds.

3.
J Proteome Res ; 20(5): 2521-2532, 2021 05 07.
Artigo em Inglês | MEDLINE | ID: mdl-33710899

RESUMO

Keloid is a benign tumor characterized by persistent inflammation, increased fibroblast proliferation, and abnormal deposition of collagen in the wound. The etiology of keloid is unclear. Here, we explored the phospho-signaling changes in human keloid fibroblasts via phosphoproteome mass spectrometry analysis. We found that comparative phosphoproteomics could statistically distinguish keloid from control fibroblasts. Differentially expressed phosphoproteins could predict the activation of known keloid-relevant upstream regulators including transforming growth factor-ß1, interleukin (IL)-4, and IL-5. With multiple bioinformatics analyses, phosphorylated FLNA, TLN1, and VCL were significantly enriched in terms of calcium homeostasis and platelet aggregation. We biologically verified that keloid fibroblasts had a higher level of Ca2+ influx than the control fibroblasts upon ionomycin stimulation. Via co-cultivation analysis, we found that human keloid fibroblasts could directly promote platelet aggregation. As suggested by PhosphoPath and gene set enrichment analysis, pFLNA was centered as the top phosphoproteins associated with keloid phenotypes. We validated that pFLNA was upregulated both in keloid fibroblasts and keloid tissue section, implicating its biomarker potential. In conclusion, we reported the first phosphoproteome on keloid fibroblasts, based on which we revealed that keloid fibroblasts had aberrant calcium homeostasis and could directly induce platelet aggregation.


Assuntos
Queloide , Cálcio , Células Cultivadas , Fibroblastos/patologia , Homeostase , Humanos , Queloide/genética , Queloide/patologia , Agregação Plaquetária , Fator de Crescimento Transformador beta1
4.
J Nat Prod ; 84(8): 2312-2320, 2021 08 27.
Artigo em Inglês | MEDLINE | ID: mdl-34406008

RESUMO

To identify novel bioactive compounds, an image-based, cell culture screening of natural product extracts was conducted. Specifically, our screen was designed to identify phytochemicals that might phenocopy inhibition of the chromosomal passenger protein complex in eliciting mitotic and cytokinetic defects. A known alkaloid, scoulerine, was identified from the rhizomes of the plant Corydalis decumbens as being able to elicit a transient mitotic arrest followed by either apoptosis induction or polyploidy. In examining the mitotic abnormality further, we observed that scoulerine could elicit supernumerary centrosomes during mitosis, but not earlier in the cell cycle. The localization of NUMA1 at spindle poles was also inhibited, suggesting diminished potential for microtubule recruitment and spindle-pole focusing. Polyploid cells emerged subsequent to cytokinetic failure. The concentration required for scoulerine to elicit all its cell division phenotypes was similar, and an examination of related compounds highlighted the requirement for proper positioning of a hydroxyl and a methoxy group about an aromatic ring for activity. Mechanistically, scoulerine inhibited AURKB activity at concentrations that elicited supernumerary centrosomes and polyploidy. AURKA was only inhibited at higher concentrations, so AURKB inhibition is the likely mechanism by which scoulerine elicited division defects. AURKB inhibition was never complete, so scoulerine may be a suboptimal AURK inhibitor or work upstream of the chromosomal passenger protein complex to reduce AURKB activity. Scoulerine inhibited the viability of a variety of human cancer cell lines. Collectively, these findings uncover a previously unknown activity of scoulerine that could facilitate targeting human cancers. Scoulerine, or a next-generation analogue, may be useful as a nontoxic component of combination therapies where inhibiting the chromosomal passenger protein complex is desired.


Assuntos
Aurora Quinase A/antagonistas & inibidores , Aurora Quinase B/antagonistas & inibidores , Alcaloides de Berberina/farmacologia , Citocinese/efeitos dos fármacos , Mitose/efeitos dos fármacos , Alcaloides de Berberina/isolamento & purificação , Linhagem Celular , China , Corydalis/química , Inibidores Enzimáticos/isolamento & purificação , Inibidores Enzimáticos/farmacologia , Humanos , Estrutura Molecular , Compostos Fitoquímicos/isolamento & purificação , Compostos Fitoquímicos/farmacologia , Rizoma/química
5.
Oral Dis ; 27(2): 290-300, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32608117

RESUMO

OBJECTIVES: This study aimed to investigate the effects of intermittent parathyroid hormone (iPTH) on the stability of orthodontic retention and to explore the possible regulatory role of insulin-like growth factor-1 (IGF-1) in this process. METHODS: Forty-eight 6-week-old male Wistar rats were adopted in this study. An orthodontic relapsing model was established to investigate the effects of iPTH on orthodontic retention. In vitro, an immortalized mouse cementoblast cell line OCCM-30 was detected by flow cytometry to study the effects of iPTH on cell proliferation and apoptosis. By application of a specific IGF-1 receptor inhibitor, the role of IGF-1 was also explored. RESULTS: In vivo study found that daily injection of PTH significantly reduced the relapsing distance. Histological staining and ELISA assay showed faster periodontal regeneration during retention period in PTH group with increased RANKL/OPG ratio and greater amount of OCN, ALP, and IGF-1 in gingival cervical fluid (GCF). Cell experiment revealed that iPTH promoted proliferation and suppressed apoptosis of cementoblast. IGF-1 receptor inhibitor significantly restrained the anabolic effect of iPTH on OCCM-30 cells. CONCLUSIONS: These findings suggest that iPTH could improve the stability of tooth movement by promoting periodontal regeneration. IGF-1 is essential in mediating the anabolic effects of iPTH.


Assuntos
Fator de Crescimento Insulin-Like I , Hormônio Paratireóideo , Animais , Cemento Dentário , Masculino , Camundongos , Ratos , Ratos Wistar , Técnicas de Movimentação Dentária
6.
BMC Public Health ; 21(1): 1892, 2021 10 19.
Artigo em Inglês | MEDLINE | ID: mdl-34666723

RESUMO

BACKGROUND: Adult child are used to taking the responsibility of taking care of their older parents in Chinese culture. However, the migration of adult child is not uncommon now in the context of urbanization in China. The purpose of this study is to explore the impact of child's migration on health status and health care utilization of older parents with chronic diseases left behind. METHODS: The data of the 2015 nationally representative longitudinal survey of the aged population in China were used in this study. Binary logistic regression was used to evaluate the impact of adult child's migration on health status and health care utilization of older parents with chronic diseases left behind. RESULTS: About a quarter of the respondents (25.5%) had at least one migrant child. Most of the respondents (86.6%) rated their health as poor, and 42.0% of them suffered from physical limitations. Nearly half of the respondents (45.0%) had depressive symptoms, but the vast majority (88.2%) were generally satisfied with their lives. Only a quarter of the respondents received outpatient treatment in the past month while only one fifth of them received inpatient visits in the past year. After controlling for other demographic and socioeconomic variables, it was found in this study that those who with migrant child were more likely to report poor self-rated health (OR = 1.26; 95% CI 1.01-1.58), not satisfied with general life (OR = 1.28; 95% CI 1.03-1.59) and seek outpatient visits (OR = 1.22; 95% CI 1.03-1.43) than those who without migrant child. CONCLUSION: Our study found that there is a negative association between migration of adult child and physical health, mental health and health care utilization of older parents with chronic diseases left behind, which means a comprehensive effect on their health status. Further health policies should focus on improving the well-being of older parents with chronic diseases left behind.


Assuntos
Nível de Saúde , Aceitação pelo Paciente de Cuidados de Saúde , Adulto , Idoso , Criança , Humanos , Filhos Adultos , China/epidemiologia , Doença Crônica , Pais
7.
J Immunol ; 200(2): 821-833, 2018 01 15.
Artigo em Inglês | MEDLINE | ID: mdl-29196456

RESUMO

Synovitis is a key contributor to the inflammatory environment in osteoarthritis (OA) joints. Currently, the biological therapy of OA is not satisfactory in multiple single-target trials on anti-TNF agents, or IL-1 antagonists. Systems biological understanding of the phosphorylation state in OA synovium is warranted to direct further therapeutic strategies. Therefore, in this study, we compared the human synovial phosphoproteome of the OA with the acute joint fracture subjects. We found that OA synovium had significantly more phosphoproteins, and 82 phosphoproteins could only be specifically found in all the OA samples. Differentially expressed proteins of the OA synovium were focusing on endoplasmic reticulum-/Golgi-associated secretion and negative regulation of cell proliferation, which was verified through an IL-1ß-treated human synoviocyte (HS) in vitro model. With data-independent acquisition-based mass spectrometry, we found that IL-1ß could induce HS to secrete proteins that were significantly associated with the endosomal/vacuolar pathway, endoplasmic reticulum/Golgi secretion, complement activation, and collagen degradation. Especially, we found that while specifically suppressing HS endocytosis, IL-1ß could activate the secretion of 25 TNF-associated proteins, and the change of SERPINE2 and COL3A1 secretion was verified by immunoblotting. In conclusion, our results suggest that OA synovium has a polarized phosphoproteome to inhibit proliferation and maintain active secretion of HS, whereas IL-1ß alone can transform HS to produce a synovitis-associated secretome, containing numerous TNF-associated secretory proteins in a TNF-independent mode.


Assuntos
Proteínas de Transporte/metabolismo , Interleucina-1beta/metabolismo , Proteômica , Sinoviócitos/metabolismo , Fatores de Necrose Tumoral/metabolismo , Biomarcadores , Proliferação de Células , Biologia Computacional/métodos , Endocitose , Fibroblastos/metabolismo , Humanos , Osteoartrite/etiologia , Osteoartrite/metabolismo , Fosfoproteínas/metabolismo , Ligação Proteica , Proteômica/métodos , Transdução de Sinais , Membrana Sinovial/metabolismo , Sinovite/etiologia , Sinovite/metabolismo
8.
Oral Dis ; 26(5): 998-1009, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32144839

RESUMO

OBJECTIVES: We aimed to investigate whether skeletal-specific H-type blood vessels exist in alveolar bone and how they function in alveolar bone remodeling. MATERIALS AND METHODS: H-type vessels with high expression of CD31 and Endomucin (CD31hi Emcnhi ) were immunostained in alveolar bone. Abundance and age-related changes in CD31hi Emcnhi endothelial cells (H-ECs) were detected by flow cytometry. Osteoprogenitors association with H-type vessels and bone mass were detected in tooth extraction model of alveolar bone remodeling by immunohistofluorescence and micro-CT, respectively. Transcription and expression of H-EC feature genes during in vitro Notch inhibition were measured by RT-qPCR and immunocytofluorescence. RESULTS: We verified that H-type vessels existed in alveolar bone, the abundance of which was highest at infancy age, then decreased but maintained a constant level during aging. In tooth extraction model, H-ECs significantly increased with concomitant perivascular accumulation of Runx2+ osteoprogenitors and gradually augmentation of bone mass. Notch inhibition of in vitro cultured H-ECs resulted in decreased expression levels of Emcn and hes1, but not Pecam1 or Kdr genes, with decreased expression levels of H-EC numbers, accordingly. CONCLUSIONS: The present study suggests that H-type vessels promote osteogenesis during alveolar bone remodeling. Notch signaling pathway regulates expression of Emcn and possibly determines fate and functions of alveolar H-ECs.


Assuntos
Remodelação Óssea , Células Endoteliais , Osteogênese , Extração Dentária , Animais , Camundongos , Molécula-1 de Adesão Celular Endotelial a Plaquetas/genética
9.
Zhong Nan Da Xue Xue Bao Yi Xue Ban ; 43(3): 301-305, 2018 Mar 28.
Artigo em Zh | MEDLINE | ID: mdl-29701193

RESUMO

OBJECTIVE: To investigate the effect of different crown heights of lateral incisor and canine on smile esthetics perception between orthodontists and patients.
 Methods: A total of 31 orthodontists and 56 patients on smile aesthetics perception were investigated. We adjusted the height of lateral incisor and canine to get 20 kinds of anterior tooth area morphology by Photoshop and asked interviewees to grade. Scores of satisfaction were recorded by Likert method.
 Results: Subjects in the 2 groups preferred smiles with upper anterior teeth edge parallel to lower lip. There was better acceptance for longer canines and less satisfaction at shorter lateral incisors in patients. Patients also got higher discrete degree of evaluation results and more rigorous about smile esthetics than orthodontists.
 Conclusion: Orthodontists and patients have different satisfaction at esthetics of anterior teeth. Esthetics preference should be considered in orthodontic treatment schedule.


Assuntos
Estética Dentária , Ortodontistas , Preferência do Paciente , Sorriso , Coroa do Dente/anatomia & histologia , Atitude do Pessoal de Saúde , Dente Canino/anatomia & histologia , Humanos , Incisivo/anatomia & histologia , Fotografia Dentária
10.
J Proteome Res ; 16(12): 4468-4480, 2017 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-28965414

RESUMO

Preeclampsia (PE) is a placenta disease, featured by hypertension, proteinuria, and other multiorgan dysfunctions, and its etiology is unclear. We and others have shown that intensive endoplasmic reticulum (ER) stress and unfolded protein response (UPR) occur in the PE placenta. In this study, we isolated detergent-insoluble proteins (DIPs) from human placenta tissues, which were enriched with protein aggregates, to characterize the placenta UPR in PE. With data-independent acquisition (DIA) mass spectrometry, we identified 2066 DIPs across all normal (n = 10) and PE (n = 10) placenta samples, among which 110 and 108 DIPs were significantly up- and down-regulated in PE, respectively. Per clustering analysis, differential DIPs could generally distinguish PE from normal placentas. We verified the MS quantitation of endoglin and vimentin by immunoblotting. In addition, we observed that PE placenta tissues have remarkably more endoglin in the cytoplasm. Furthermore, we found that DIPs were evenly distributed across different chromosomes and could be enriched in diversified gene ontology terms, while differential DIPs avoided to distribute on X-chromosome. Significantly up-regulated DIPs in PE were focused on the top functions of lipid metabolism, while 23 of these DIPs could form the top network regulating cellular movement, development, growth, and proliferation. Our results implicate that human PE placentas have disease-relevant differential DIPs, which reflect aberrantly aggregated proteins of placental tissues. The mass spectrometry proteomics data have been deposited to ProteomeXchange consortium with the data set identifier PXD006654, and iProX database (accession number: IPX0000948000).


Assuntos
Placenta/química , Pré-Eclâmpsia , Proteoma/análise , Resposta a Proteínas não Dobradas , Detergentes/química , Endoglina/análise , Feminino , Humanos , Espectrometria de Massas , Gravidez , Proteômica/métodos
11.
J Proteome Res ; 15(11): 4060-4072, 2016 11 04.
Artigo em Inglês | MEDLINE | ID: mdl-27470641

RESUMO

Identification of all phosphorylation forms of known proteins is a major goal of the Chromosome-Centric Human Proteome Project (C-HPP). Recent studies have found that certain phosphoproteins can be encapsulated in exosomes and function as key regulators in tumor microenvironment, but no deep coverage phosphoproteome of human exosomes has been reported to date, which makes the exosome a potential source for the new phosphosite discovery. In this study, we performed highly optimized MS analyses on the exosomal and cellular proteins isolated from human colorectal cancer SW620 cells. With stringent data quality control, 313 phosphoproteins with 1091 phosphosites were confidently identified from the SW620 exosome, from which 202 new phosphosites were detected. Exosomal phosphoproteins were significantly enriched in the 11q12.1-13.5 region of chromosome 11 and had a remarkably high level of tyrosine-phosphorylated proteins (6.4%), which were functionally relevant to ephrin signaling pathway-directed cytoskeleton remodeling. In conclusion, we here report the first high-coverage phosphoproteome of human cell-secreted exosomes, which leads to the identification of new phosphosites for C-HPP. Our findings provide insights into the exosomal phosphoprotein systems that help to understand the signaling language being delivered by exosomes in cell-cell communications. The mass spectrometry proteomics data have been deposited to the ProteomeXchange consortium with the data set identifier PXD004079, and iProX database (accession number: IPX00076800).


Assuntos
Neoplasias Colorretais/patologia , Bases de Dados de Proteínas/tendências , Exossomos , Fosfoproteínas/análise , Proteoma/genética , Comunicação Celular , Linhagem Celular Tumoral , Cromossomos Humanos Par 11/genética , Neoplasias Colorretais/genética , Projeto Genoma Humano , Humanos , Espectrometria de Massas , Proteínas de Neoplasias , Fosfopeptídeos/análise , Fosfoproteínas/genética , Proteômica/métodos , Transdução de Sinais
12.
Phys Rev Lett ; 115(24): 241601, 2015 Dec 11.
Artigo em Inglês | MEDLINE | ID: mdl-26705623

RESUMO

Without Lorentz invariance, spontaneous global symmetry breaking can lead to multicritical Nambu-Goldstone modes with a higher-order low-energy dispersion ω∼k^{n} (n=2,3,…), whose naturalness is protected by polynomial shift symmetries. Here, we investigate the role of infrared divergences and the nonrelativistic generalization of the Coleman-Hohenberg-Mermin-Wagner (CHMW) theorem. We find novel cascading phenomena with large hierarchies between the scales at which the value of n changes, leading to an evasion of the "no-go" consequences of the relativistic CHMW theorem.

13.
Expert Opin Drug Saf ; 23(4): 487-495, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38497691

RESUMO

BACKGROUND: Hemorrhage represents the most common and serious side effect of antithrombotic agents. Many studies have compared the risk of bleeding between different antithrombotic agents, but analysis of time-to-onset for hemorrhage induced by these drugs is yet sparse. METHODS: We conducted a retrospective study based on the adverse drug reaction reports on antithrombotic agents collected by the Henan Adverse Drug Reaction Monitoring Center. We assessed the reporting odds ratio to determine the disproportionate reporting signals for bleeding and the Weibull shape parameter was used to evaluate the time-to-onset data. RESULTS: In the signal detection, crude low molecular weight heparin-hemorrhage was found as a positive signal. The hemorrhage for most antithrombotic agents was random failure profiles. In particular, the hazard of hemorrhage decreased over time for warfarin and clopidogrel and increased for alteplase, nadroparin, and dipyridamole. CONCLUSION: We found that the risk of bleeding in patients taking Crude low molecular weight heparins was significantly higher compared to other antithrombotic agents, but with a small magnificence, which may be attributed to the severely irrational use of this medication under improper management. Statistics in days, results showed that the risk of bleeding decreased over time for warfarin and clopidogrel and increased for alteplase, nadroparin, and dipyridamole.


Assuntos
Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Fibrinolíticos , Humanos , Fibrinolíticos/efeitos adversos , Varfarina/efeitos adversos , Nadroparina/efeitos adversos , Clopidogrel/efeitos adversos , Ativador de Plasminogênio Tecidual/efeitos adversos , Estudos Retrospectivos , Farmacovigilância , Hemorragia/induzido quimicamente , Hemorragia/epidemiologia , Anticoagulantes/efeitos adversos , Dipiridamol/efeitos adversos , Inibidores da Agregação Plaquetária/efeitos adversos
14.
Sci Total Environ ; 900: 165685, 2023 Nov 20.
Artigo em Inglês | MEDLINE | ID: mdl-37478921

RESUMO

Climate change and anthropogenic activity are the primary drivers of water cycle changes. Hydrological droughts are caused by a shortage of surface and/or groundwater resources caused by climate change and/or anthropogenic activity. Existing hydrological models have primarily focused on simulating natural water cycle processes, while limited research has investigated the influence of anthropogenic activities on water cycle processes. This study proposes a novel framework that integrates a distributed hydrological model and an attribution analysis method to assess the impacts of climate change and anthropogenic activities on hydrological drought The distributed dualistic water cycle model was applied to the Fuhe River Basin (FRB), and it generated a Nash-Sutcliffe efficiency coefficient > 0.85 with a relative error of <5 %. Excluding the year with extreme drought conditions, our analysis revealed that climate change negatively impacted the average drought duration (-105.5 %) and intensity (-23.6 %) because of increasing precipitation. However, anthropogenic activities continued to contribute positively to the drought, accounting for 5.5 % and 123.6 % of the average drought duration and intensity, respectively, because of increased water consumption. When accounting for extreme drought years, our results suggested that climate change has contributed negatively to the average duration of drought (-113.2 %) but positively to its intensity (7.8 %). Further, we found that anthropogenic activities contributed positively to both the average drought duration and intensity (13.2 % and 92.2 %, respectively). While climate change can potentially mitigate hydrological drought in the FRB by boosting precipitation levels, its overall effect may exacerbate drought through the amplification of extreme climate events resulting from global climate change. Therefore, greater attention should be paid to the effects of extreme drought.

15.
Front Immunol ; 14: 1140749, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36969180

RESUMO

Dendritic cells (DCs) are antigen-presenting cells that bridge innate and adaptive immune responses. Multiple cell types, including DCs, rely on cellular metabolism to determine their fate. DCs substantially alter cellular metabolic pathways during activation, such as oxidative phosphorylation, glycolysis, fatty acid and amino acid metabolism, which have crucial implications for their functionality. In this review, we summarize and discuss recent progress in DC metabolic studies, focusing on how metabolic reprogramming influences DC activation and functionality and the potential metabolic differences among DC subsets. Improving the understanding of the relationship between DC biology and metabolic regulation may provide promising therapeutic targets for immune-mediated inflammatory diseases.


Assuntos
Células Dendríticas , Glicólise , Humanos , Fosforilação Oxidativa , Imunidade , Inflamação/metabolismo
16.
Front Public Health ; 11: 980880, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36891350

RESUMO

Background: The COVID-19 pandemic has spread rapidly and heavily hit the globe, and the mutation and transmission speed of the coronavirus have accelerated so that the world is still in danger. Thus, this study aims to investigate the participants' risk perception and explore the associations of risk perception of COVID-19 with negative emotions, information value perception and other related dimensions. Methods: A cross-sectional, population-based online survey was conducted from April 4 to 15, 2020, in China. A total of 3,552 participants were included in this study. A descriptive measure of demographic information was used in this study. Multiple regression models and moderating effect analysis were used to estimate the effect of potential associations of risk perceptions. Results: Those who showed negative emotions (depressed, helplessness, loneliness) and perceived video information in social media to be useful were positively correlated with risk perception, whereas individuals who perceived experts' advice to be useful, shared risk information with friends and thought that their community made adequate emergency preparation reported lower risk perception. The moderating effect of information perceived value (ß = 0.020, p < 0.001) on the relationship between negative emotion and perception of risk was significant. Conclusions: Individual differences in risk cognition during the COVID-19 pandemic were observed in subgroups of age level. Furthermore, the role of negative emotional states, the perceived usefulness of risk information and the sense of security also contributed to improving the public's risk perception. It is crucial for authorities to focus on residents' negative emotions and to clarify misinformation in accessible and effective ways in a timely manner.


Assuntos
COVID-19 , Humanos , COVID-19/epidemiologia , Estudos Transversais , Pandemias , Emoções , Percepção
17.
Nat Commun ; 14(1): 8461, 2023 Dec 20.
Artigo em Inglês | MEDLINE | ID: mdl-38123537

RESUMO

Endothelial cells (ECs) and bone marrow stromal cells (BMSCs) play crucial roles in supporting hematopoiesis and hematopoietic regeneration. However, whether ECs are a source of BMSCs remains unclear. Here, we evaluate the contribution of endothelial-to-mesenchymal transition to BMSC generation in postnatal mice. Single-cell RNA sequencing identifies ECs expressing BMSC markers Prrx1 and Lepr; however, this could not be validated using Prrx1-Cre and Lepr-Cre transgenic mice. Additionally, only a minority of BMSCs are marked by EC lineage tracing models using Cdh5-rtTA-tetO-Cre or Tek-CreERT2. Moreover, Cdh5+ BMSCs and Tek+ BMSCs show distinct spatial distributions and characteristic mesenchymal markers, suggestive of their origination from different progenitors rather than CDH5+ TEK+ ECs. Furthermore, myeloablation induced by 5-fluorouracil treatment does not increase Cdh5+ BMSCs. Our findings indicate that ECs hardly convert to BMSCs during homeostasis and myeloablation-induced hematopoietic regeneration, highlighting the importance of using appropriate genetic models and conducting careful data interpretation in studies concerning endothelial-to-mesenchymal transition.


Assuntos
Células Endoteliais , Células-Tronco Mesenquimais , Camundongos , Animais , Medula Óssea , Camundongos Transgênicos
18.
Front Pharmacol ; 13: 761097, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35496316

RESUMO

Objective: Traditional Chinese medicine (TCM) injection is widely used, but its adverse drug reaction (ADR) may be a serious public health concern in primary medical institutions. This research will explore the safety of TCM injections and provide clinical recommendations at the primary medical institutions. Method: ADR data were collected by the Henan Adverse Drug Reaction Monitoring Center from 2016 to 2020 were analized Descriptive statistics, chi-square analysis, binary logistic regression, and Mantel-haenszel hierarchical analysis were used to identify the risk factors associated with the rational use of TCM injections in primary medical institutions. Results: A total of 30,839 cases were collected in this study, 4905 cases (15.90%) were SADRs. Patients using TCM injections in primary medical institutions were more likely to cause SADRs (OR = 1.149, 95% CI: 1.061-1.245). Aged over 60 years (OR = 1.105, 95% CI: 1.007-1.212), non-essential drugs (OR = 1.292, 95% CI: 1.173-1.424), autumn (OR = 1.194, 95% CI: 1.075-1.326) and TCM injections with safflower (OR = 1.402, 95% CI: 1.152-1.706), danshen (OR = 1.456, 95% CI: 1.068-1.984) and medication reasons with chemotherapy (OR = 2.523, 95% CI: 1.182-5.386) and hypertension (OR = 1.495, 95% CI: 1.001-2.233) were more likely to suffer SADR in primary medical institutions. Conclusion: In general, the number of reported cases of TCM injection was declining over time, but the proportion of SADRs in primary medical institutions increased. In the future, it is necessary to continue to restrict TCM injections at the macro policy level, and vigorously promote the varieties in the essential drug list. At the micro level, it is necessary to intervene in specific populations, specific diseases and specific drugs, first start with them, step by step, and effectively prevent SADR occurrences in primary medical institutions.

20.
Front Pharmacol ; 13: 848472, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35355731

RESUMO

Introduction: Antipsychotic drugs are the main therapy for schizophrenia and have been widely used in mental disorder fields. However, the research on the safety of antipsychotic drugs in the real-world is rare. The purpose of this research is to evaluate the safety of antipsychotic drugs based on real-world data. Methods: ADR reports collected by the Henan Adverse Drug Reaction Monitoring Center from 2016 to 2020 were analyzed. We described the safety of antipsychotic drugs by descriptive analysis and four signal mining methods. Meanwhile, the risk factors for serious adverse reactions of antipsychotics were identified. Results: A total of 3363 ADR reports related to antipsychotics were included. We found that the number of adverse drug reaction reports and the proportion of serious adverse reactions have increased year by year from 2016 to 2020. Most adverse drug reactions occurred within 3 months after taking the medicine. The symptoms caused by typical antipsychotics and atypical antipsychotics were different and dyskinesia was more common in typical antipsychotics. Most patients improved or recovered after treatment or intervention while only one patient had sequelae. Low-level hospitals, psychiatric hospitals, youth, and old age could increase the risk of serious adverse reactions. Four off-label signals were found through signal mining, including amisulpride-pollakiuria, ziprasidone-dyspnoea, quetiapine-urinary incontinence, olanzapine-hepatic function abnormal. Conclusion: We found that most ADRs occurred within 3 months after taking the medicine, so close observation was required for patients during the first 3 months of treatment. The ADRs of antipsychotics involved multiple organ-system damages but were not serious. It might be recommended to take alternative drugs after a serious ADR occurred. The symptoms caused by typical APDs and atypical APDs were different. For patients with typical APDs, dyskinesia was more common and should be given special attention. Statistics showed that low-level hospitals, psychiatric hospitals, youth, and old age were risk factors for serious ADRs. The four off-label signals obtained by signal mining should be paid special attention, including amisulpride-pollakiuria, ziprasidone-dyspnoea, quetiapine-urinary incontinence, and olanzapine-hepatic function abnormal.

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