Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 40
Filtrar
Más filtros

Banco de datos
País/Región como asunto
Tipo del documento
País de afiliación
Intervalo de año de publicación
1.
J Relig Health ; 62(5): 3070-3094, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37012553

RESUMEN

The purpose of this study was to investigate spirituality and attitudes toward death among rural and urban elderly. We asked 134 older adults from rural areas and 128 from urban areas to complete a self-administrated questionnaire including the Spiritual Self-assessment Scale and Death Attitude Scale. The fear and anxiety of death, escape acceptance, natural acceptance, approach acceptance, and death avoidance scores of older adults living in rural areas were higher than those living in urban areas. The construction of social infrastructure and medical care should be strengthened in rural areas so as to improve older adults' attitudes toward death.


Asunto(s)
Terapias Espirituales , Espiritualidad , Humanos , Anciano , Estudios Transversales , Actitud , China , Población Rural
2.
J Cell Mol Med ; 25(18): 8579-8587, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-34378306

RESUMEN

As the direct contacting site for pathogens and allergens, the mucosal barrier plays a vital role in the lungs and intestines. Innate lymphoid cells (ILCs) are particularly resident in the mucosal barrier and participate in several pathophysiological processes, such as maintaining or disrupting barrier integrity, preventing various pathogenic invasions. In the pulmonary mucosae, ILCs sometimes aggravate inflammation and mucus hypersecretion but restore airway epithelial integrity and maintain lung tissue homeostasis at other times. In the intestinal mucosae, ILCs can increase epithelial permeability, leading to severe intestinal inflammation on the one hand, and assist mucosal barrier in resisting bacterial invasion on the other hand. In this review, we will illustrate the positive and negative roles of ILCs in mucosal barrier immunity.


Asunto(s)
Mucosa Intestinal/inmunología , Linfocitos/inmunología , Mucosa Respiratoria/inmunología , Animales , Humanos , Inmunidad Innata , Linfocitos/citología
3.
J Cell Mol Med ; 24(5): 2761-2771, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-31970850

RESUMEN

Lung immune responses to respiratory pathogens and allergens are initiated in early life which will further influence the later onset of asthma. The airway epithelia form the first mechanical physical barrier to allergic stimuli and environmental pollutants, which is also the key regulator in the initiation and development of lung immune response. However, the epithelial regulation mechanisms of early-life lung immune responses are far from clear. Our previous study found that integrin ß4 (ITGB4) is decreased in the airway epithelium of asthma patients with specific variant site. ITGB4 deficiency in adult mice aggravated the lung Th2 immune responses and enhanced airway hyper-responsiveness (AHR) with a house dust mite (HDM)-induced asthma model. However, the contribution of ITGB4 to the postnatal lung immune response is still obscure. Here, we further demonstrated that ITGB4 deficiency following birth mediates spontaneous lung inflammation with ILC2 activation and increased infiltration of eosinophils and lymphocytes. Moreover, ITGB4 deficiency regulated thymic stromal lymphopoietin (TSLP) production in airway epithelial cells through EGFR pathways. Neutralization of TSLP inhibited the spontaneous inflammation significantly in ITGB4-deficient mice. Furthermore, we also found that ITGB4 deficiency led to exaggerated lung allergic inflammation response to HDM stress. In all, these findings indicate that ITGB4 deficiency in early life causes spontaneous lung inflammation and induces exaggerated lung inflammation response to HDM aeroallergen.


Asunto(s)
Células Epiteliales/metabolismo , Hipersensibilidad/complicaciones , Hipersensibilidad/inmunología , Integrina beta4/metabolismo , Pulmón/patología , Neumonía/complicaciones , Animales , Animales Recién Nacidos , Hiperreactividad Bronquial/complicaciones , Citocinas/metabolismo , Células Epiteliales/patología , Receptores ErbB/metabolismo , Hipersensibilidad/parasitología , Hipersensibilidad/fisiopatología , Pulmón/parasitología , Linfocitos/inmunología , Ratones Transgénicos , Fosforilación , Pyroglyphidae/fisiología , Linfopoyetina del Estroma Tímico
4.
J Cell Mol Med ; 24(21): 12694-12705, 2020 11.
Artículo en Inglés | MEDLINE | ID: mdl-32939938

RESUMEN

Severe RSV infection is the main cause of hospitalization to children under the age of five. The regulation of miRNAs on the severity of RSV infection is unclear. The aim of the study was to identify the critical differential expression miRNAs (DE miRNAs) that can regulate the pathological response in RSV-infected airway epithelial cells. In this study, miRNA and mRNA chips of RSV-infected airway epithelia from Gene Expression Omnibus (GEO) were screened and analysed, separately. DE miRNAs-targeted genes were performed for further pathway and process enrichment analysis. DE miRNA-targeted gene functional network was constructed on the basis of miRNA-mRNA interaction. The screened critical miRNA was also investigated by bioinformatics analysis. Then, RSV-infected human bronchial epithelial cells (HBECs) were constructed to verify the expression of the DE miRNAs. Finally, specific synthetic DE miRNAs mimics were used to confirm the effect of DE miRNAs on the RSV-infected HBECs. 45 DE miRNAs were identified from GEO62306 dataset. Our results showed that hsa-mir-34b-5p and hsa-mir-34c-5p decreased significantly in HBECs after RSV infection. Consistent with the biometric analysis, hsa-mir-34b/c-5p is involved in the regulation of mucin expression gene MUC5AC. In RSV-infected HBECs, the inducement of MUC5AC production by decreased hsa-mir-34b/c-5p was partly mediated through activation of c-Jun. These findings provide new insights into the mechanism of mucus obstruction after RSV infection and represent valuable targets for RSV infection and airway obstruction treatment.


Asunto(s)
Regulación hacia Abajo/genética , Células Epiteliales/metabolismo , Células Epiteliales/virología , Pulmón/patología , MicroARNs/genética , Moco/metabolismo , Infecciones por Virus Sincitial Respiratorio/genética , Infecciones por Virus Sincitial Respiratorio/virología , Antracenos/farmacología , Niño , Regulación hacia Abajo/efectos de los fármacos , Células Epiteliales/efectos de los fármacos , Células Epiteliales/patología , Perfilación de la Expresión Génica , Ontología de Genes , Redes Reguladoras de Genes/efectos de los fármacos , Humanos , MicroARNs/metabolismo , Mucina 5AC/metabolismo , Proteínas Proto-Oncogénicas c-jun/metabolismo , ARN Mensajero/genética , ARN Mensajero/metabolismo
5.
J Transl Med ; 18(1): 467, 2020 12 09.
Artículo en Inglés | MEDLINE | ID: mdl-33298101

RESUMEN

BACKGROUND: Late-onset asthma (LOA) is beginning to account for an increasing proportion of asthma patients, which is often underdiagnosed in the elderly. Studies on the possible relations between aging-related genes and LOA contribute to the diagnosis and treatment of LOA. Forkhead Box O3 (FOXO3) and TP53 are two classic aging-related genes. DNA methylation varies greatly with age which may play an important role in the pathogenesis of LOA. We supposed that the differentially methylated sites of FOXO3 and TP53 associated with clinical phenotypes of LOA may be useful biomarkers for the early screening of LOA. METHODS: The mRNA expression and DNA methylation of FOXO3 and TP53 in peripheral blood of 43 LOA patients (15 mild LOA, 15 moderate LOA and 13 severe LOA) and 60 healthy controls (HCs) were determined. The association of methylated sites with age was assessed by Cox regression to control the potential confounders. Then, the correlation between differentially methylated sites (DMSs; p-value < 0.05) and clinical lung function in LOA patients was evaluated. Next, candidate DMSs combining with age were evaluated to predict LOA by receiver operating characteristic (ROC) analysis and principal components analysis (PCA). Finally, HDM-stressed asthma model was constructed, and DNA methylation inhibitor 5-Aza-2'-deoxycytidine (5-AZA) were used to determine the regulation of DNA methylation on the expression of FOXO3 and TP53. RESULTS: Compared with HCs, the mRNA expression and DNA methylation of FOXO3 and TP53 vary significantly in LOA patients. Besides, 8 DMSs from LOA patients were identified. Two of the DMSs, chr6:108882977 (FOXO3) and chr17:7591672 (TP53), were associated with the severity of LOA. The combination of the two DMSs and age could predict LOA with high accuracy (AUC values = 0.924). In HDM-stressed asthma model, DNA demethylation increased the expression of FOXO3 and P53. CONCLUSIONS: The mRNA expression of FOXO3 and TP53 varies significantly in peripheral blood of LOA patients, which may be due to the regulation of DNA methylation. FOXO3 and TP53 methylation is a suitable blood biomarker to predict LOA, which may be useful targets for the risk diagnosis and clinical management of LOA.


Asunto(s)
Asma , Metilación de ADN , Anciano , Asma/diagnóstico , Asma/genética , Biomarcadores , Proteína Forkhead Box O3/sangre , Proteína Forkhead Box O3/genética , Humanos , Pulmón/metabolismo , Fenotipo , Proteína p53 Supresora de Tumor/sangre , Proteína p53 Supresora de Tumor/genética
6.
Clin Exp Allergy ; 50(10): 1127-1139, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32618381

RESUMEN

BACKGROUND: Integrin ß4 (ITGB4) is a hemi-desmosome protein which is downregulated in the airway epithelial cells of asthma patients. The proximal promoters and exons of ITGB4 contain CpG islands or multiple CpG sites both in human and mice, which indicated the possible methylation regulation of ITGB4 in airway epithelial cells. OBJECTIVE: We sought to unveil that DNA methylation regulates the decreased ITGB4 during the pathogenesis of asthma. METHODS: Mice were exposed to house dust mite (HDM) extracts to construct an asthma model. 5-Aza-2'-deoxycytidine (5-AZA) or dexamethasone (DEX) were added in the last two weeks. Besides, the primary human bronchial epithelial (HBE) cells were incubated for the detection of ITGB4 expression and methylation status after HDM stress. Furthermore, DNA methylation of ITGB4 in peripheral blood was measured in asthma patients. Logistic regression was employed to evaluate the association between methylation sites and asthma patients' ages in the control of potential confounders. Moreover, the correlations between differentially methylated sites (DMSs) and clinical parameters in asthma patients were assessed. Finally, the ability of candidate DMSs to predict asthma was evaluated by receiver operating characteristic (ROC) analysis and principal component analysis (PCA). RESULTS: We found that in HDM-stressed asthma model, DNA methylation regulated the reduced ITGB4 expression in airway epithelial cells. Moreover, alteration in the specific CpG sites (chr17:73717720 and chr17:73717636) of ITGB4 may regulate ITGB4 expression and further may be associated with the clinically phenotypic of asthma. The specific DMSs of ITGB4 in peripheral blood can distinguish asthma patients from healthy controls (HCs) effectively. CONCLUSIONS AND CLINICAL RELEVANCE: This study confirmed that DNA methylation regulates the decreased expression of ITGB4 in the airway epithelial cells of asthma patients. These results supply some useful insights to the mechanism of the decreased ITGB4 in asthmatic airway epithelial and provide possible targets for early prediction and screening of asthma.


Asunto(s)
Asma/genética , Metilación de ADN , Epigénesis Genética , Células Epiteliales/metabolismo , Integrina beta4/genética , Pulmón/metabolismo , Pyroglyphidae/inmunología , Adulto , Animales , Asma/sangre , Asma/inmunología , Asma/fisiopatología , Biomarcadores/sangre , Estudios de Casos y Controles , Células Cultivadas , Islas de CpG , Modelos Animales de Enfermedad , Regulación hacia Abajo , Células Epiteliales/inmunología , Femenino , Humanos , Integrina beta4/sangre , Pulmón/inmunología , Pulmón/fisiopatología , Masculino , Ratones Noqueados , Persona de Mediana Edad , Regiones Promotoras Genéticas
7.
Clin Sci (Lond) ; 134(13): 1735-1749, 2020 07 17.
Artículo en Inglés | MEDLINE | ID: mdl-32608482

RESUMEN

Airway epithelial cells (AECs) play a key role in asthma susceptibility and severity. Integrin ß4 (ITGB4) is a structural adhesion molecule that is down-regulated in the airway epithelium of asthma patients. Although a few studies hint toward the role of ITGB4 in asthmatic inflammation pathogenesis, their specific resultant effects remain unexplored. In the present study, we determined the role of ITGB4 of AECs in the regulation of Th2 response and identified the underpinning molecular mechanisms. We found that ITGB4 deficiency led to exaggerated lung inflammation and AHR with higher production of CCL17 in house dust mite (HDM)-treated mice. ITGB4 regulated CCL17 production in AECs through EGFR, ERK and NF-κB pathways. EFGR-antagonist treatment or the neutralization of CCL17 both inhibited exaggerated pathological marks in HDM-challenged ITGB4-deficient mice. Together, these results demonstrated the involvement of ITGB4 deficiency in the development of Th2 responses of allergic asthma by down-regulation of EGFR and CCL17 pathway in AECs.


Asunto(s)
Asma/inmunología , Quimiocina CCL17/inmunología , Células Epiteliales/inmunología , Integrina beta4/inmunología , Pulmón/inmunología , Animales , Asma/genética , Quimiocina CCL17/genética , Receptores ErbB/genética , Receptores ErbB/inmunología , Femenino , Humanos , Integrina beta4/genética , Masculino , Ratones , Ratones Noqueados , Células Th2/inmunología
8.
Respir Res ; 20(1): 243, 2019 Nov 04.
Artículo en Inglés | MEDLINE | ID: mdl-31684967

RESUMEN

BACKGROUND: Chronic obstructive pulmonary disease (COPD) is a chronic lung inflammatory disease which has a close relationship with aging. Genome-wide analysis reveals that DNA methylation markers vary obviously with age. DNA methylation variations in peripheral blood have the potential to be biomarkers for COPD. However, the specific DNA methylation of aging-related genes in the peripheral blood of COPD patients remains largely unknown. METHODS: Firstly, 9 aging-related differentially expressed genes (DEGs) in COPD patients were screened out from the 25 aging-related genes profile through a comprehensive screening strategy. Secondly, qPCR and multiple targeted bisulfite enrichment sequencing (MethTarget) were used to detect the mRNA level and DNA methylation level of the 9 differentially expressed genes in the peripheral blood of 60 control subjects and 45 COPD patients. The candidate functional CpG sites were selected on the basis of the regulation ability of the target gene expression. Thirdly, the correlation was evaluated between the DNA methylation level of the key CpG sites and the clinical parameters of COPD patients, including forced expiratory volume in one second (FEV1), forced expiratory volume in one second as percentage of predicted volume (FEV1%), forced expiratory volume/ forced vital capacity (FEV/FVC), modified British medical research council (mMRC) score, acute exacerbation frequency and the situation of frequent of acute aggravation (CAT) score. Lastly, differentially methylated CpG sites unrelated to smoking were also determined in COPD patients. RESULTS: Of the 9 differentially expressed aging-related genes, the mRNA expression of 8 genes were detected to be significantly down-regulated in COPD group, compared with control group. Meanwhile, the methylated level of all aging-related genes was changed in COPD group containing 219 COPD-related CpG sites in total. Notably, 27 CpG sites of FOXO3 gene showed a lower False Discovery Rate (FDR) and higher methylation difference values. Also, some variable DNA methylation is associated with the severity of COPD. Additionally, of the 219 COPD-related CpG sites, 147 CpG sites were not related to smoking. CONCLUSION: These results identified that the mRNA expression and DNA methylation level of aging-related genes were changed in male COPD patients, which provides a molecular link between aging and COPD. The identified CpG markers are associated with the severity of COPD and provide new insights into the prediction and identification of COPD.


Asunto(s)
Envejecimiento/genética , Metilación de ADN , Enfermedad Pulmonar Obstructiva Crónica/genética , Adolescente , Adulto , Factores de Edad , Anciano , Anciano de 80 o más Años , Envejecimiento/sangre , Estudios de Casos y Controles , Islas de CpG , Bases de Datos Genéticas , Femenino , Volumen Espiratorio Forzado , Factores de Transcripción Forkhead/genética , Predisposición Genética a la Enfermedad , Humanos , Pulmón/fisiopatología , Masculino , Persona de Mediana Edad , Enfermedad Pulmonar Obstructiva Crónica/sangre , Enfermedad Pulmonar Obstructiva Crónica/diagnóstico , Enfermedad Pulmonar Obstructiva Crónica/fisiopatología , Medición de Riesgo , Factores de Riesgo , Índice de Severidad de la Enfermedad , Factores Sexuales , Transcriptoma , Capacidad Vital , Adulto Joven
9.
Arch Virol ; 164(12): 2909-2918, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31520221

RESUMEN

CYP27A1, CYP2R1 and CYP27B1 hydroxylases are involved in the synthesis of 1, 25-hydroxyvitamin D3, which plays a role in the immune regulation and pathogenesis of hepatitis C virus (HCV) infection. The aim of the present study was to investigate the relationships between polymorphisms in vitamin D pathway genes and HCV infection outcomes in a Chinese population. Nine single-nucleotide polymorphisms (SNPs) of CYP27A1, CYP2R1 and CYP27B1 were genotyped in a high-risk Chinese population. The distributions of these SNPs were compared among groups with different outcomes of HCV infection, including 863 cases of persistent HCV infection, 524 cases of spontaneous clearance, and 1079 uninfected controls. The results showed that the CYP2R1 rs12794714-G, rs10741657-A, rs1562902-C, and rs10766197-G alleles were significantly associated with increased susceptibility to HCV infection (all PFDR < 0.05, in additive/dominant models), and the combined effect of the four unfavorable alleles was related to an elevated risk of HCV infection in a locus-dosage manner (Ptrend = 0.008). Moreover, haplotype analysis suggested that, compared with the most frequent haplotype (Ars12794714Grs10741657Trs1562902Ars10766197), the haplotype containing four unfavorable alleles, GACG, was associated with a higher risk of HCV infection. The results of our study suggest that genetic variants in CYP2R1 may be biomarkers for predicting the susceptibility to HCV infection in the Chinese population.


Asunto(s)
25-Hidroxivitamina D3 1-alfa-Hidroxilasa/genética , Colestanotriol 26-Monooxigenasa/genética , Familia 2 del Citocromo P450/genética , Hepatitis C/genética , Polimorfismo de Nucleótido Simple , Adulto , Anciano , Estudios de Casos y Controles , China , Femenino , Estudios de Asociación Genética , Predisposición Genética a la Enfermedad , Haplotipos , Hepatitis C/metabolismo , Humanos , Masculino , Persona de Mediana Edad , Vitamina D/metabolismo
10.
Hu Li Za Zhi ; 65(1): 24-32, 2018 Feb.
Artículo en Zh | MEDLINE | ID: mdl-29405017

RESUMEN

The home-based medical care integrated plan under Taiwan National Health Insurance has changed from paying for home-based medical care, home-based nursing, home-based respiratory treatment, and palliative care to paying for a single, continuous home-based care service package. Formerly, physician-visit regulations limited home visits for home-based nursing to providing medical related assessments only. This limitation not only did not provide practical assistance to the public but also caused additional problems for those with mobility problems or who faced difficulties in making visits hospital. This 2016 change in regulations opens the door for doctors to step out their 'ivory tower', while offering the public more options to seek medical assistance in the hope that patients may change their health-seeking behavior. The home-based concept that underlies the medical service system is rooted deeply in the community in order to set up a sound, integrated model of community medical care. It is a critical issue to proceed with timely job handover confirmation with the connecting team and to provide patients with continuous-care services prior to discharge through the discharge-planning service and the connection with the connecting team. This is currently believed to be the only continuous home-based medical care integrated service model in the world. This model not only connects services such as health literacy, rehabilitation, home-based medical care, home-based nursing, community palliative care, and death but also integrates community resources, builds community resources networks, and provides high quality community care services.


Asunto(s)
Recursos en Salud , Cuidados a Largo Plazo , Prestación Integrada de Atención de Salud , Promoción de la Salud , Hospitales Urbanos , Humanos , Taiwán
12.
J Hum Genet ; 61(2): 129-35, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26446365

RESUMEN

Vitamin D has been considered as an immune modulator, and exerted the effect through the vitamin D receptor (VDR). This study investigated the associations of single-nucleotide polymorphisms (SNPs) of VDR with the outcomes of Hepatitis C virus (HCV) infection. Three SNPs (rs2228570, rs757343 and rs739837) were genotyped by TaqMan assay among Chinese population, including 538 HCV spontaneous clearance subjects, 834 persistent infection subjects and 1030 uninfected subjects. Binary logistic analyses were used to control the effects of confounding factors. The results showed that subjects with the rs757343 A allele and rs739837 A allele had the significantly reduced risk of HCV susceptibility (all PBonferroni<0.05 in dominant/additive model). In the stratified analysis, the protection of rs757343 A allele and rs739837 A allele against HCV infection remained effective in some subgroups. In addition, patients carrying rs739837 CA genotype were less prone to develop persistent infection (PBonferroni=0.033) and such effect still work in several subgroups in the stratified analysis. Furthermore, haplotype analysis indicated that when compared with the most frequent GC haplotype, the haplotype carrying AA (odds ratio (OR)=0.66, 95% confidence interval (CI)=0.56-0.78) and GA (OR=0.64, 95% CI=0.47-0.85) suggested a protective effect. Our findings indicated that the polymorphisms of VDR are associated with the outcomes of HCV infection among Chinese population.


Asunto(s)
Hepatitis C/genética , Polimorfismo de Nucleótido Simple , Receptores de Calcitriol/genética , Adulto , Estudios de Casos y Controles , China , Femenino , Predisposición Genética a la Enfermedad , Haplotipos , Humanos , Masculino , Persona de Mediana Edad
13.
Int J Mol Sci ; 16(8): 16792-805, 2015 Jul 23.
Artículo en Inglés | MEDLINE | ID: mdl-26213920

RESUMEN

Human leukocyte antigen (HLA) class II molecule influences host antigen presentation and anti-viral immune response. The aim of this study was to investigate whether single nucleotide polymorphisms (SNPs) within HLA class II gene were associated with different clinical outcomes of hepatitis C virus (HCV) infection. Three HLA class II SNPs (rs3077, rs2395309 and rs2856718) were genotyped by TaqMan assay among Chinese population, including 350 persistent HCV infection patients, 194 spontaneous viral clearance subjects and 973 HCV-uninfected control subjects. After logistic regression analysis, the results indicated that the rs2856718 TC genotype was significantly associated with the protective effect of the HCV natural susceptibility (adjusted OR: 0.712, 95% CI: 0.554-0.914) when compared with reference TT genotype, and this remained significant after false discovery rate (FDR) correction (p = 0.024). Moreover, the protective effect of rs2856718 was observed in dominant genetic models (adjusted OR: 0.726, 95% CI: 0.574-0.920), and this remained significant after FDR correction (p = 0.024). In stratified analysis, a significant decreased risk was found in rs2856718C allele in the male subgroup (adjusted OR: 0.778, 95% CI: 0.627-0.966) and hemodialysis subgroup (adjusted OR: 0.713, 95% CI: 0.552-0.921). Our results indicated that the genetic variations of rs2856718 within the HLA-DQ gene are associated with the natural susceptibility to HCV infection among the Chinese population.


Asunto(s)
Alelos , Pueblo Asiatico/genética , Predisposición Genética a la Enfermedad , Hepacivirus/fisiología , Hepatitis C/genética , Hepatitis C/virología , Antígenos de Histocompatibilidad Clase II/genética , Estudios de Casos y Controles , Demografía , Femenino , Haplotipos/genética , Humanos , Masculino , Persona de Mediana Edad , Polimorfismo de Nucleótido Simple/genética
14.
Biomolecules ; 14(7)2024 Jun 25.
Artículo en Inglés | MEDLINE | ID: mdl-39062465

RESUMEN

Safe and eco-friendly preservatives are crucial to preventing food spoilage and illnesses, as foodborne diseases caused by pathogens result in approximately 600 million cases of illness and 420,000 deaths annually. ε-Poly-L-lysine (ε-PL) is a novel food preservative widely used in many countries. However, its commercial application has been hindered by high costs and low production. In this study, ε-PL's biosynthetic capacity was enhanced in Streptomyces albulus WG608 through metabolic engineering guided by multi-omics techniques. Based on transcriptome and metabolome data, differentially expressed genes (fold change >2 or <0.5; p < 0.05) and differentially expressed metabolites (fold change >1.2 or <0.8) were separately subjected to gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis. The integrative analysis of transcriptome, metabolome, and overexpression revealed the essential roles of isocitrate lyase, succinate dehydrogenase, flavoprotein subunit, diaminopimelate dehydrogenase, polyphosphate kinase, and polyP:AMP phosphotransferase in ε-PL biosynthesis. Subsequently, a strain with enhanced ATP supply, L-lysine supply, and ε-PL synthetase expression was constructed to improve its production. Finally, the resulting strain, S. albulus WME10, achieved an ε-PL production rate of 77.16 g/L in a 5 L bioreactor, which is the highest reported ε-PL production to date. These results suggest that the integrative analysis of the transcriptome and metabolome can facilitate the identification of key pathways and genetic elements affecting ε-PL synthesis, guiding further metabolic engineering and thus significantly enhancing ε-PL production. The method presented in this study could be applicable to other valuable natural antibacterial agents.


Asunto(s)
Ingeniería Metabólica , Polilisina , Streptomyces , Streptomyces/metabolismo , Streptomyces/genética , Ingeniería Metabólica/métodos , Polilisina/biosíntesis , Polilisina/metabolismo , Metaboloma , Transcriptoma , Metabolómica/métodos , Multiómica
15.
Front Public Health ; 12: 1411185, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39118972

RESUMEN

Background: Prevention measures for palliative care and the provision of discharge planning services for inpatients in Taiwan before and during the COVID-19 pandemic had not been investigated. This study was aimed to investigate the factors associated with heightened palliative care needs and increased mortality rates. Methods: This research adopts a retrospective case-control study design. The investigation encompasses patients admitted before the pandemic (from January 1, 2019, to May 31, 2019) and during the COVID-19 pandemic (from January 1, 2020, to May 31, 2020). The case group consisted of 231 end-of-life inpatients during the pandemic, control group was composed of the pool of inpatients with pre-pandemic and matched with cases by sex and age in a 1:1 ratio. Results: The results showed that the prevalence of respiratory failure symptoms (p = 0.004), residing in long-term care facilities (p = 0.017), palliative care needs assessment scores (p = 0.010), as well as the provision of guidance for nasogastric tube feeding (p = 0.002), steam inhalation (p = 0.003), turning and positioning (p < 0.001), percussion (p < 0.001), passive range of motion (p < 0.001), and blood pressure measurement (p < 0.001). Furthermore, the assessment of the necessity for assistive devices, including hospital beds, also exhibited statistically significant variations (p < 0.001). Further investigation of the factors associated with high palliative care needs and the risk of mortality for both the case and control groups. Risk factors for high palliative care needs encompassed assessments of daily activities of living, the presence of pressure ulcers, and the receipt of guidance for ambulation. Risk factors for mortality encompassed age, a diagnosis of cancer, palliative care needs assessment scores, and the provision of guidance for disease awareness. Conclusion: This research highlights the heightened risk of COVID-19 infection among end-of-life inpatients during the COVID-19 pandemic. The findings of this study may advance care planning to alleviate avoidable suffering. To meet the needs of inpatients during pandemic, healthcare professionals should undergo comprehensive palliative care training and receive policy support.


Asunto(s)
COVID-19 , Cuidados Paliativos , Humanos , COVID-19/epidemiología , COVID-19/prevención & control , Cuidados Paliativos/estadística & datos numéricos , Taiwán/epidemiología , Masculino , Femenino , Estudios Retrospectivos , Anciano , Estudios de Casos y Controles , Persona de Mediana Edad , Anciano de 80 o más Años , SARS-CoV-2 , Pandemias , Adulto
16.
Nurs Health Sci ; 15(2): 213-9, 2013 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-23301516

RESUMEN

The relationships between self-efficacy, self-care behavior, anxiety, and depression for Taiwanese individuals with type 2 diabetes were determined in this study. Depression and anxiety are common symptoms that can contribute toward adverse medical outcomes. A descriptive, cross-sectional, correlational design was used. The sample comprised 201 patients with type 2 diabetes from diabetes outpatient clinics at three teaching hospitals in Taiwan. The results of this study revealed that people with diabetes who had received diabetes health education, regularly made clinical visits, underwent treatment, and did not smoke demonstrated a high self-efficacy score (P < 0.05). Self-efficacy among people with diabetes positively correlated with illness duration (P < 0.05), treatment (P < 0.01), and self-care behavior (P < 0.01). Self-efficacy among people with diabetes negatively correlated with anxiety and depression (P < 0.01). Self-efficacy can be a predictor of anxiety and depression (P < 0.01). This study revealed that enhancing self-efficacy levels might reduce anxiety and depression. Self-efficacy-enhancing programs should be held regularly in clinical practices. Conducting psychological research on diabetes drives policy and healthcare system change.


Asunto(s)
Trastorno Depresivo/psicología , Diabetes Mellitus Tipo 2/psicología , Autocuidado/psicología , Autoeficacia , Encuestas y Cuestionarios , Adulto , Factores de Edad , Análisis de Varianza , Trastornos de Ansiedad/epidemiología , Trastornos de Ansiedad/psicología , Estudios Transversales , Trastorno Depresivo/epidemiología , Países en Desarrollo , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/terapia , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Medición de Riesgo , Factores Sexuales , Taiwán/epidemiología
17.
Front Microbiol ; 14: 1123050, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37152744

RESUMEN

Introduction: ε-poly-L-lysine (ε-PL) is a high value, widely used natural antimicrobial peptide additive for foods and cosmetic products that is mainly produced by Streptomyces albulus. In previous work, we developed the high-yield industrial strain S. albulus WG-608 through successive rounds of engineering. Methods: Here, we use integrated physiological, transcriptomic, and proteomics association analysis to resolve the complex mechanisms underlying high ε-PL production by comparing WG-608 with the progenitor strain M-Z18. Results: Our results show that key genes in the glycolysis, pentose phosphate pathway, glyoxylate pathway, oxidative phosphorylation, and L-lysine biosynthesis pathways are differentially upregulated in WG-608, while genes in the biosynthetic pathways for fatty acids, various branched amino acids, and secondary metabolite by-products are downregulated. This regulatory pattern results in the introduction of more carbon atoms into L-lysine biosynthesis and ε-PL production. In addition, significant changes in the regulation of DNA replication, transcription, and translation, two component systems, and quorum sensing may facilitate the adaptability to environmental pressure and the biosynthesis of ε-PL. Overexpression of ppk gene and addition of polyP6 further enhanced the ε-PL production. Discussion: This study enables comprehensive understanding of the biosynthetic mechanisms of ε-PL in S. albulus WG-608, while providing some genetic modification and fermentation strategies to further improve the ε-PL production.

18.
J Agric Food Chem ; 71(43): 16212-16220, 2023 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-37851455

RESUMEN

Lacto-N-neotetraose (LNnT), an abundant human milk oligosaccharide (HMO), has been approved as a novel functional additive for infant formulas. Therefore, LNnT biosynthesis has attracted extensive attention. Here, a high LNnT-producing, low lacto-N-triose II (LNT II)-residue Escherichia coli strain was constructed. First, an initial LNnT-producing chassis strain was constructed by blocking lactose, UDP-N-acetylglucosamine, and UDP-galactose competitive consumption pathways and introducing ß-1,3-N-acetylglucosaminyltransferase LgtA and ß-1,4-galactosyltransferase LgtB. Subsequently, the supply of LNnT precursors was increased by enhancing UDP-N-acetylglucosamine and UDP-galactose synthesis, inactivating LNT II extracellular transporter SetA, and improving UTP synthesis. Then, modular engineering strategy was used to optimize LNnT biosynthetic pathway fluxes. Moreover, pathway fluxes were fine-tuned by modulating translation initiation strength of essential genes lgtB, prs, and lacY. Finally, LNnT production reached 6.70 g/L in a shake flask and 19.40 g/L in a 3 L bioreactor with 0.47 g/(L h) productivity, with 1.79 g/L LNT II residue, highest productivity level, and lowest LNT II residue thus far.


Asunto(s)
Vías Biosintéticas , Galactosa , Lactante , Humanos , Galactosa/metabolismo , Escherichia coli/genética , Escherichia coli/metabolismo , Acetilglucosamina/metabolismo , Oligosacáridos/química , Leche Humana/química , Uridina Difosfato/metabolismo
19.
Nurs Health Sci ; 14(2): 173-81, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-22380735

RESUMEN

The purpose of this study was to evaluate the effectiveness of a community-based health promotion program targeting people with hypertension and high cholesterol. A pre-experimental study was conducted. A total of 60 residents were recruited to participate. Participants were assessed at baseline and at a 6 month follow up at a regional hospital in northern Taiwan. The questionnaires used for data collection consisted of an assessment of self-efficacy, self-care activities, health outcomes, and physical fitness. Several teaching resources were used, including a DVD, a self-care booklet, group support (exercise and counseling sessions), and telephone follow up. A significant decrease in waist circumference (t = 2.20, P = 0.03) and high density lipoprotein-cholesterol level (t = 4.71, P < 0.00) was found at follow up. Moreover, the level of physical fitness activity, and sit-ups specifically (t = 3.10, P < 0.00), was increased. Participants also showed significant increases between baseline and 6 month follow up in their efficacy expectation score (t = -5.81, P < 0.00), outcome expectation scores (t = -4.76, P < 0.00) and self-care behavior scores (t = -2.78, P = 0.007). The community-based health promotion program is an effective means of helping people with hypertension and high cholesterol and should be instituted regularly and evaluated in clinical practice.


Asunto(s)
Servicios de Salud Comunitaria , Promoción de la Salud/métodos , Hipercolesterolemia/terapia , Hipertensión/terapia , Autocuidado/psicología , Autoeficacia , Anciano , Anciano de 80 o más Años , Femenino , Estudios de Seguimiento , Humanos , Hipercolesterolemia/enfermería , Hipertensión/enfermería , Masculino , Persona de Mediana Edad , Investigación en Evaluación de Enfermería , Taiwán , Resultado del Tratamiento
20.
Contemp Nurse ; 43(1): 38-46, 2012 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-23343231

RESUMEN

The purpose of this study was to investigate the relationships among the self-efficacy, professional commitment, and job satisfaction of diabetic health-care personnel. The research design was cross-sectional. Three teaching hospitals, one from each of northern, middle and southern parts of Taiwan, were selected for data collection and used questionnaires to collect data; 202 participants were recruited. The demographic data for job title and job satisfaction were not significantly different (F = 2.13, P = 0.090). Self-efficacy was significantly positively correlated with professional commitment (r = 0.29, P = 0.000) and with job satisfaction (r = 0.14, P = 0.041). A total of 34.1% of the variance in job satisfaction was explained by age, years of service in the medical or nursing field, the actual number of years caring for patients with diabetes, self-efficacy, and professional commitment. Understanding the self-efficacy and professional commitment of medical and nursing personnel can help increase job satisfaction and improve the quality of medical and nursing care.


Asunto(s)
Diabetes Mellitus/terapia , Satisfacción en el Trabajo , Competencia Profesional , Autoeficacia , Adulto , Estudios Transversales , Diabetes Mellitus/enfermería , Femenino , Humanos , Masculino , Persona de Mediana Edad , Análisis de Regresión , Tamaño de la Muestra , Taiwán , Adulto Joven
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA