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1.
Cell ; 141(7): 1208-19, 2010 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-20603001

RESUMO

The BBSome is a complex of Bardet-Biedl Syndrome (BBS) proteins that shares common structural elements with COPI, COPII, and clathrin coats. Here, we show that the BBSome constitutes a coat complex that sorts membrane proteins to primary cilia. The BBSome is the major effector of the Arf-like GTPase Arl6/BBS3, and the BBSome and GTP-bound Arl6 colocalize at ciliary punctae in an interdependent manner. Strikingly, Arl6(GTP)-mediated recruitment of the BBSome to synthetic liposomes produces distinct patches of polymerized coat apposed onto the lipid bilayer. Finally, the ciliary targeting signal of somatostatin receptor 3 needs to be directly recognized by the BBSome in order to mediate targeting of membrane proteins to cilia. Thus, we propose that trafficking of BBSome cargoes to cilia entails the coupling of BBSome coat polymerization to the recognition of sorting signals by the BBSome.


Assuntos
Cílios/metabolismo , Complexos Multiproteicos/metabolismo , Retina/metabolismo , Fatores de Ribosilação do ADP/metabolismo , Animais , Síndrome de Bardet-Biedl/metabolismo , Bovinos , Membrana Celular/metabolismo , Humanos , Lipossomos/metabolismo , Camundongos , Fosfolipídeos/metabolismo , Dobramento de Proteína , Transporte Proteico , Receptores de Somatostatina/metabolismo , Extratos de Tecidos/metabolismo
2.
Connect Tissue Res ; 65(4): 304-312, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38922815

RESUMO

AIM: In this study, we aimed to establish a rat tooth movement model to assess miR-20's ability in enhancing the BMP2 signaling pathway and facilitate alveolar bone remodeling. METHOD: 60 male SD rats had nickel titanium spring devices placed between their left upper first molars and incisors, with the right side serving as the control. Forces were applied at varying durations (18h, 24h, 30h, 36h, 42h, 1d, 3d, 5d, 7d, 14d), and their bilateral maxillary molars and surrounding alveolar bones were retrieved for analysis. Fluorescent quantitative PCR was conducted to assess miR-20a, BMP2, Runx2, Bambi and Smad6 gene expression in alveolar bone, and western blot was performed to determine the protein levels of BMP2, Runx2, Bambi, and Smad6 after mechanical loading. RESULT: We successfully established an orthodontic tooth movement model in SD rats and revealed upregulated miR-20a expression and significantly increased BMP2 and Runx2 gene expression and protein synthesis in alveolar bone during molar tooth movement. Although Bambi and Smad6 gene expression did not significantly increase, their protein synthesis was found to decrease significantly. CONCLUSION: MiR-20a was found to be involved in rat tooth movement model alveolar bone remodeling, wherein it promoted remodeling by reducing Bambi and Smad6 protein synthesis through the BMP2 signaling pathway.


Assuntos
Proteína Morfogenética Óssea 2 , MicroRNAs , Ratos Sprague-Dawley , Transdução de Sinais , Técnicas de Movimentação Dentária , Animais , Proteína Morfogenética Óssea 2/metabolismo , Proteína Morfogenética Óssea 2/genética , Masculino , MicroRNAs/metabolismo , MicroRNAs/genética , Ratos , Subunidade alfa 1 de Fator de Ligação ao Core/metabolismo , Subunidade alfa 1 de Fator de Ligação ao Core/genética , Processo Alveolar/metabolismo , Processo Alveolar/patologia , Regulação da Expressão Gênica
3.
BMC Oral Health ; 23(1): 430, 2023 06 28.
Artigo em Inglês | MEDLINE | ID: mdl-37380944

RESUMO

BACKGROUND: This study aimed to evaluate spatial changes in dental arches resulting from premature loss of first primary molars and assess the necessity of a space maintainer. METHODS: We searched the electronic databases PubMed, Cochrane Library, ClinicalTrials, and EMBASE. Split-mouth studies involving unilateral premature loss of a primary first molar were included. Quality assessment of selected studies made use of the ROBINS-I tool. Mean space differences were calculated for the D + E and D spaces, arch width, arch length, arch perimeter. RESULTS: Of the 329 studies considered, 11 split-mouth studies were selected, including 246 cases in the maxilla and 217 in the mandible from 477 individuals aged 5-10 years. Over the medium-term follow-up period (6-24 months), space loss was 0.65 mm in the maxillary D + E (MD 0.65, 95% CI 0.15-1.16, P = 0.01), 1.24 mm in the mandibular D + E (MD 1.24, 95% CI 0.60-1.89, P < 0.01), and 1.47 mm in the mandibular D (MD 1.47, 95% CI 0.66-2.28, P < 0.01). There was no significant change in arch width, length, or arch perimeter between the initial and follow-up examinations (P > 0.05). CONCLUSIONS: After premature loss of first primary molars, space can be lost, but the amount of loss would not affect arch width, length, or arch perimeter over the 6-24 months follow-up period.


Assuntos
Arco Dental , Boca , Humanos , Face , Mandíbula , Dente Molar
4.
BMC Oral Health ; 22(1): 589, 2022 12 09.
Artigo em Inglês | MEDLINE | ID: mdl-36494711

RESUMO

BACKGROUND: The effectiveness of platelet concentrates in promoting root development of necrotic immature permanent teeth is unclear. The present study evaluated whether the platelet concentrate protocol was superior to the traditional blood clot protocol in regeneration therapy. METHODS: We searched Electronic databases, such as PubMed, Cochrane Library, ClinicalTrials and EMBASE. Randomized controlled trial studies, cohort studies, case-control studies and cross-sectional studies were included, in which platelet-rich concentrates were tested for periapical healing and root development, with the blood clot treatment protocol as the control group. Clinical and radiographic outcomes were considered. Selected articles were assessed for risk of bias. Pooled risk ratios (risk ratio, RR) were calculated for clinical success, responses to cold and electric pulp tests, periapical lesions, apex closure, root lengthening, and thickening of the dentin walls. Subgroup meta-analysis were conducted according to the type of platelet concentrate used. RESULTS: Of the 1272 screened studies, 13 randomized controlled studies, 2 case-control studies and 1 cohort study were selected, in which 465 immature necrotic permanent teeth, particularly incisors and premolars, were treated. Of these 465 teeth, 457 (98.2%) in both the control and experimental groups remained clinically asymptomatic for the entire study duration, whereas eight (1.8%) showed signs and symptoms of failure, including spontaneous pain, sensitivity to percussion or reinfection. Compared with control teeth, teeth treated with PRP achieved better apical healing than BC group (RR 1.13, 95% CI 1.01-1.26, P = 0.03), and teeth treated with platelet concentrates showed improved apical closure (RR 1.04, 95% CI 0.86-1.25, P = 0.69), root lengthening (RR 1.01, 95% CI 0.74-1.39, P = 0.93), and thickening of the dentin walls (RR 1.35, 95% CI 0.95-1.93, P = 0.09), although these differences were not statistically significant. CONCLUSIONS: Platelet concentrates can be used as successful scaffolds for regenerative endodontic treatment of necrotic immature permanent teeth, and PRP as a scaffold may achieve better periapical healing of teeth with periapical inflammation, although they did not differ significantly from conventional blood clot scaffolds in development of the root.


Assuntos
Plasma Rico em Plaquetas , Trombose , Humanos , Estudos de Coortes , Estudos Transversais , Dentição Permanente , Regeneração
5.
Clin Oral Investig ; 25(4): 2419-2427, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32910263

RESUMO

OBJECTIVE: To translate and cross-culturally adapt the Malocclusion Impact Questionnaire (MIQ) into Chinese and to assess the psychometric properties of the Chinese version of the MIQ (MIQ/C) for use among adolescents with malocclusion in China. MATERIALS AND METHOD: First, the MIQ/C was developed according to international guidelines. Then, the MIQ/C was filled out by 536 adolescents between 10 and 16 years of age. This study used exploratory factor analysis (EFA), confirmatory factor analysis (CFA), convergent validity, internal consistency, and test-retest reliability to evaluate the psychometric properties of the MIQ/C. RESULTS: Following EFA, three domains were extracted, accounting for 65.950% of the total variance. The CFA results showed that the fit indices of each factor in the three-factor model all reached the standard (chi-square/DF = 2.591, GFI = 0.919, TLI = 0.926, CFI = 0.928, RMSEA = 0.076). The scale evidenced a good relationship with the two global questions, indicating good convergent validity. The Cronbach alpha value and the intraclass correlation coefficients (ICC) value of the MIQ/C were 0.929 and 0.893, respectively. CONCLUSION: The MIQ/C demonstrated good reliability and validity and can be further studied and applied in Chinese adolescents with malocclusion. CLINICAL RELEVANCE: The MIQ/C can be applied to assess the psychosocial impact of malocclusion among Chinese adolescents.


Assuntos
Má Oclusão , Adolescente , China , Humanos , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários
6.
Int J Mol Sci ; 22(9)2021 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-34066665

RESUMO

Odorant-binding proteins (OBPs) typically act as transporters of odor molecules and play an important role in insect host location. Here, we identified an OBP in brown planthopper (BPH) Nilaparvata lugens salivary glands via transcriptome sequencing. Real-time quantitative PCR and Western blotting analysis results showed that NlugOBP11 was highly expressed in salivary glands and secreted into rice plant during feeding, suggesting that it assists in BPH feeding on rice. Functional analysis in N. lugens saliva revealed that silencing this gene by RNA interference decreased the BPH stylet performance in the phloem of rice plants, reduced sap sucking, and ultimately led to insect death. Moreover, overexpression of NlugOBP11 in rice protoplasts or Nicotiana benthamiana leaves inhibited the production of defense-related signaling molecule salicylic acid in rice plant. The results demonstrate that NlugOBP11 is not only essential for BPH feeding, but also acts as an effector that inhibits plant defense.


Assuntos
Comportamento Alimentar , Hemípteros/fisiologia , Oryza/parasitologia , Reguladores de Crescimento de Plantas/farmacologia , Receptores Odorantes/metabolismo , Saliva/metabolismo , Sequência de Aminoácidos , Animais , Ciclopentanos/farmacologia , Hemípteros/crescimento & desenvolvimento , Oxilipinas/farmacologia , Receptores Odorantes/química , Ácido Salicílico/farmacologia , Nicotiana/efeitos dos fármacos
7.
J Clin Periodontol ; 47(10): 1201-1208, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32767566

RESUMO

AIM: Building on previous psychometric work, we aimed to further assess the minimally important difference (MID) of the Oral Health Impact Profile for Chronic Periodontitis (OHIP-CP). METHODS: In total, 240 consecutive patients with chronic periodontitis were recruited in the study. The OHIP-CP was completed at baseline and after six weeks. Methodology testing included the confirmatory factor analysis (CFA) and MID. Confirmatory factor analysis (CFA) was performed to assess the fit of the previously proposed three-factor model. The MID of this questionnaire was determined by applying anchor-based and distribution-based approaches. RESULTS: The CFA supported a three-factor model for the OHIP-CP with acceptable fit to the data. The fit indices were χ2 /df = 2.231, GFI = 0.935, TLI = 0.969 and CFI = 0.976, RMSEA = 0.076. The OHIP-CP scores showed significant improvements after treatment (p < .001). The anchor-based MIDs of OHIP-CP for "oral function restriction," "oral pain" and "psychological and social impact," and total score were 2, 1, 4 and 7 points, respectively. The effect sizes (ES) and standardized response mean (SRM) for the OHIP-CP were moderate to large. CONCLUSIONS: The MID of the OHIP-CP is recommended for interpreting clinically meaningful change in oral health-related quality of life (OHRQoL) over time.


Assuntos
Periodontite Crônica , Humanos , Saúde Bucal , Dor , Qualidade de Vida , Inquéritos e Questionários
8.
Clin Oral Investig ; 24(6): 1997-2004, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31435823

RESUMO

OBJECTIVE: To assess dental treatment under dental general anesthesia (DGA) among Chinese preschool children by investigating changes in their oral health-related quality of life (OHRQoL), the incidence of postoperative complications, and parental satisfaction. METHOD: A single-center prospective cohort study was conducted. A total of 190 children who received treatment for early childhood caries (ECC) under DGA were included. The primary outcome was a change in the children's OHRQoL at 1 month after the operation compared to that at baseline, which was measured by the Early Childhood Oral Health Impact Scale (ECOHIS). The secondary outcomes were the incidence of complications within 1 day after treatment and parental satisfaction with the DGA treatment. RESULTS: In total, 180 participants were successfully reevaluated after the operation, yielding a 94.7% follow-up response rate. The total ECOHIS score decreased by 76.3% (P < 0.01) after treatment, demonstrating a large effect. Approximately 74.4% of the children complained of at least one complication, including sleepiness (43.3%), emergence agitation (38.9%), nausea/vomiting (13.9%), dizziness (10.6%), and fever (3.3%), on the first day. Approximately 85.5% of the parents were satisfied with the DGA treatment. CONCLUSION: DGA treatment has a positive effect on Chinese preschool children's OHRQoL and is evaluated highly by their parents. CLINICAL RELEVANCE: Dental treatment under general anesthesia improved the OHRQoL of Chinese preschool children.


Assuntos
Anestesia Dentária , Cárie Dentária , Saúde Bucal , Qualidade de Vida , Anestesia Geral , Criança , Pré-Escolar , Assistência Odontológica , Cárie Dentária/epidemiologia , Humanos , Pais , Estudos Prospectivos , Inquéritos e Questionários
9.
Water Sci Technol ; 2017(1): 300-309, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29698244

RESUMO

This study prepared a carboxylate-functionalized sugarcane bagasse (CF-SCB) from sugarcane bagasse (SCB) via a simple and low-toxicity chemical modification to enhance its capacity for adsorbing methylene blue (MB) from aqueous solutions. The success of chemical modification was confirmed by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), the pore area and porosity, and zeta potential measurement analysis. The adsorption capacity of CF-SCB was investigated at different pHs, ionic strengths, temperatures, contact times and initial dye concentrations. Equilibrium data were best described by the Langmuir isotherm model, and the maximum monolayer adsorption capacity of CF-SCB (296.74 mg g-1) was greatly improved compared with SCB (77.16 mg g-1) at 30 °C. The thermodynamic study indicated that MB adsorption onto CF-SCB was a spontaneous, endothermic and entropy increased process. Adsorption kinetics followed a pseudo-second-order mode, and the adsorption mechanism was based on electrostatic interactions. The reusability study showed that CF-SCB had reasonably good reuse potential. All the results suggested that CF-SCB has high potential to be used as an effective and renewable adsorbent for MB removal from wastewater.


Assuntos
Celulose/química , Azul de Metileno/química , Saccharum/química , Poluentes Químicos da Água/química , Adsorção , Cinética , Microscopia Eletrônica de Varredura , Espectroscopia de Infravermelho com Transformada de Fourier , Termodinâmica , Tiazinas , Águas Residuárias , Purificação da Água
10.
Qual Life Res ; 24(4): 1011-6, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25298052

RESUMO

OBJECTIVES: The aim of this study was to evaluate the reliability and validity of the Chinese version of the Oral Health Impact Profile for edentulous subjects (OHIP-EDENT-C). METHODS: After translation and cross-cultural adaptation following international guidelines, 162 complete denture wearers were recruited to complete the questionnaire. The reliability of the OHIP-EDENT-C was evaluated using internal consistency and test-retest methods. The validity of the OHIP-EDENT-C was analyzed by construct validity and convergent validity. Construct validity was determined based on factor analysis and convergent validity by analyzing the correlation between OHIP-EDENT-C subscale scores and the global question. RESULTS: Cronbach's alpha value (internal reliability) for the total OHIP-EDENT-C score was 0.972, and the intraclass correlation coefficient value (test-retest reliability) was 0.763 (similar to the original OHIP-EDENT). Construct validity was determined by factor analysis, extracting five factors, accounting for 74.31 % of the variance. All items had factor loadings above 0.40. In terms of convergent validity, the OHIP-EDENT-C subscale was significantly highly correlated to the global question. CONCLUSION: The results suggest that the OHIP-EDENT-C is a reliable and valid measure to evaluate OHRQoL for edentulous subjects in China.


Assuntos
Boca Edêntula/psicologia , Saúde Bucal , Qualidade de Vida , Inquéritos e Questionários , Idoso , Povo Asiático , China , Prótese Total , Feminino , Humanos , Masculino , Reprodutibilidade dos Testes , Traduções
11.
Qual Life Res ; 24(6): 1465-9, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25381644

RESUMO

OBJECTIVES: The aim of this study was to validate the short form of the Dentine Hypersensitivity Experience Questionnaire (DHEQ-15) in Chinese patients with dentine hypersensitivity (DH). METHODS: In total, 200 patients with DH were recruited to complete the questionnaire. The reliability of the DHEQ-15 was evaluated using internal consistency and test-retest methods. The exploratory factor analysis (EFA) was conducted to identify domains of the DHEQ-15. Convergent validity was determined by analyzing the correlation between DHEQ-15 subscale scores and the global rating of oral health question. RESULTS: Cronbach's alpha value (internal reliability) for the total DHEQ-15 score was 0.934 (higher to the original DHEQ-15' 0.924), and the intraclass correlation coefficient value (test-retest reliability) was 0.894 (lower to the original DHEQ-15' 0.939). The EFA identified three components with eigenvalues >1, explaining 53.0, 17.1, and 12.3% of the variance, respectively, accounting for a total of 82.4% of the variance. The three components named 'restrictions' (three items), 'changes in eating habits' (six items), and 'emotions and identity' (six items). In terms of convergent validity, the DHEQ-15 subscale was significant highly negatively correlated to the global oral health rating. CONCLUSIONS: The results provide initial evidence that the DHEQ-15 can be properly used for assessment of patients with DH in China.


Assuntos
Sensibilidade da Dentina/psicologia , Inquéritos e Questionários/normas , Adulto , Idoso , China , Sensibilidade da Dentina/diagnóstico , Emoções , Análise Fatorial , Feminino , Humanos , Idioma , Masculino , Pessoa de Meia-Idade , Saúde Bucal , Qualidade de Vida , Reprodutibilidade dos Testes , Adulto Jovem
12.
Chemistry ; 20(36): 11402-9, 2014 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-25056685

RESUMO

A series of dual-metal zeolitic imidazolate framework (ZIF) crystals with SOD and RHO topologies was synthesised by metal substitution from ZIF-108 (Zn(2-nitroimidazolate)2 , SOD topology) as the parent material. This was based on the concept that metal substitution of ZIF-108 requires a much lower activation energy than homogenous nucleation owing to the metastability of ZIF-108. In-depth investigations of the formation processes of the daughter ZIFs indicated that the transformation of ZIF-108 is a dissolution/heterogeneous nucleation process. Typical isostructural Co(2+) substitution mainly occurs at the outer surface of ZIF-108 and results in a core-shell structure. On the contrary, the Cu(2+) -substituted ZIF has a RHO topology with a homogeneous distribution of Cu(2+) ions in the structure. Substitution with Ni(2+) resulted in a remarkable enhancement in adsorption selectivity toward CO(2) over N(2) by a factor of up to 227. With Co(2+) -substituted nanoparticles as inorganic filler, a mixed matrix membrane based on polysulfone displayed greatly improved performance in the separation of H(2)/CH(4), CO(2)/N(2) and CO(2)/CH(4).


Assuntos
Gases/isolamento & purificação , Imidazóis/química , Membranas Artificiais , Compostos Organometálicos/química , Zeolitas/química , Adsorção , Modelos Moleculares , Zinco/química
13.
Chemosphere ; 351: 141208, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38219986

RESUMO

Plastics are indispensable in modern society but also pose a persistent threat to the environment. In particular, microplastics (MPs) have a substantial environmental impact on ecosystems. Municipal solid waste landfill leachates are a source of MPs, but leakage of MPs from leachates has only been reported in a few studies. As a modern city, Hong Kong has a remarkably high population density and a massive plastic waste generation. However, it depends on conventional landfilling for plastic waste management and traditional thermal ammonia stripping for leachate treatment. Yet, the MP leakage from landfill leachates in Hong Kong has not been disclosed. This is the first study that aimed to identify, quantify, and characterise MPs in raw and treated leachates, respectively, from major landfill sites in Hong Kong. The concentrations of MPs varied from 49.0 ± 24.3 to 507.6 ± 37.3 items/L among the raw leachate samples, and a potential correlation was found between the concentration of MPs in the raw leachate sample from a given landfill site and the annual leachate generation of the site. Most MPs were 100-500 µm fragments or filaments and were transparent or yellow. Regarding the polymeric materials among the identified MPs, poly(ethylene terephthalate) and polyethylene were the most abundant types, comprising 45.30% and 21.37% of MPs, respectively. Interestingly, leachates treated by ammonia stripping contained higher concentrations of MPs than raw leachate samples, which demonstrated that the traditional treatment process may not be sufficient regarding the removal of emerging pollutants, such as MPs. Overall, our findings provide a more comprehensive picture of the pollution of MPs in landfill leachates in Hong Kong and highlight the urgent need for adopting the consideration of MPs into the conventional mindset of waste management systems in Hong Kong.


Assuntos
Eliminação de Resíduos , Poluentes Químicos da Água , Resíduos Sólidos/análise , Microplásticos , Plásticos , Poluentes Químicos da Água/análise , Hong Kong , Amônia , Ecossistema , Instalações de Eliminação de Resíduos , China
14.
Antimicrob Agents Chemother ; 56(3): 1350-8, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-22214777

RESUMO

BMS-790052, a first-in-class hepatitis C virus (HCV) replication complex inhibitor, targeting nonstructural protein 5A (NS5A), displays picomolar to nanomolar potency against genotypes 1 to 5. This exceptional potency translated into robust anti-HCV activity in clinical studies with HCV genotype 1-infected subjects. To date, all BMS-790052-associated resistance mutations have mapped to the N-terminal region of NS5A. To further characterize the antiviral activity of BMS-790052, HCV replicon elimination and colony formation assays were performed. Replicon was cleared from genotype 1a and 1b replicon cells in a time- and dose-dependent manner. Elimination of the genotype 1a replicon required longer treatment durations and higher concentrations of BMS-790052 than those for the genotype1b replicon. Single amino acid substitutions that conferred relatively low levels of resistance were observed at early time points and at low doses. Higher doses and longer treatment durations yielded mutations that conferred greater levels of resistance, including linked amino acid substitutions. Replicon cells that survived inhibitor treatment remained fully sensitivity to pegylated alpha interferon (pegIFN-α) and other HCV inhibitors. Moreover, genotype 1a replicon elimination was markedly enhanced when pegIFN-α and BMS-790052 were combined. Resistant variants observed in this study were very similar to those observed in a multiple ascending dose (MAD) monotherapy trial of BMS-790052, validating replicon elimination studies as a model to predict clinical resistance. Insights gained from the in vitro anti-HCV activity and resistance profiles of BMS-790052 will be used to help guide the clinical development of this novel HCV inhibitor.


Assuntos
Antivirais/farmacologia , Farmacorresistência Viral/genética , Hepacivirus/efeitos dos fármacos , Pironas/administração & dosagem , Replicon/genética , Triazóis/administração & dosagem , Proteínas não Estruturais Virais/genética , Substituição de Aminoácidos , Linhagem Celular Tumoral , Farmacorresistência Viral/efeitos dos fármacos , Genótipo , Hepacivirus/fisiologia , Humanos , Concentração Inibidora 50 , Interferon-alfa/farmacologia , Fenótipo , Polietilenoglicóis/farmacologia , RNA Polimerase Dependente de RNA/antagonistas & inibidores , RNA Polimerase Dependente de RNA/genética , RNA Polimerase Dependente de RNA/metabolismo , Proteínas Recombinantes/farmacologia , Deleção de Sequência , Proteínas não Estruturais Virais/antagonistas & inibidores , Proteínas não Estruturais Virais/metabolismo , Replicação Viral/efeitos dos fármacos , Replicação Viral/genética
15.
Eur J Oral Sci ; 120(3): 218-23, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22607338

RESUMO

The aim of this study was to evaluate the reliability and the validity of the Chinese version of the Dentine Hypersensitivity Experience Questionnaire (DHEQ). After translation and cross-cultural adaptation following international guidelines, 110 patients with dentine hypersensitivity were recruited to complete the questionnaire. The reliability of the Chinese version of the DHEQ was evaluated using internal consistency and test-retest methods. Construct validity was determined based on factor analysis, discriminative validity (by comparing the subscale scores difference in the degree of sensitivity being investigated), and convergent validity (by analyzing the correlation between DHEQ subscale scores and the global rating of oral health question). Cronbach's alpha value (internal reliability) for the total DHEQ score was 0.95 and the intraclass correlation coefficient (ICC) value (test-retest reliability) was 0.85. Construct validity was determined by factor analysis, extracting eight factors, accounting for 74% of the variance. All items had factor loadings of >0.40. In addition, the Chinese version of the DHEQ was found to be valid for distinguishing patients with varying degrees of dentine hypersensitivity. In terms of convergent validity, the impact scale was significantly highly correlated to the global oral health rating. The results suggest that the Chinese version of the DHEQ has satisfactory psychometric properties and is applicable for patients with dentine hypersensitivity in China.


Assuntos
Efeitos Psicossociais da Doença , Sensibilidade da Dentina/psicologia , Psicometria/métodos , Qualidade de Vida , China , Comparação Transcultural , Inquéritos de Saúde Bucal , Humanos , Saúde Bucal , Reprodutibilidade dos Testes , Perfil de Impacto da Doença , Inquéritos e Questionários
16.
Clin Oral Investig ; 16(2): 443-50, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21318300

RESUMO

This study aims to evaluate the inclinations of right and left sides the mandibular fossa in Asian population using computed tomography (CT) images and determine its effects according to the parameters of gender, age, and asymmetry. CT images of the heads of 198 Asian subjects [95 females aged 44.2 ± 20.7 years, range 11-88 years; and 103 males aged 44.5 ± 19.7 years, range 15-98 years] were selected. The following eight parameters characterizing the inclinations of the mandibular fossa were measured by medical imaging software: anterior and posterior inclinations on the left and right sides on a sagittal view, and medial and lateral inclinations on the left and right sides on a coronal view. The anterior inclination was significant steeper in males than in females on both the left and right sides. A moderate positive correlation was found between age and anterior inclinations on the left and right sides. None of the other parameters were significantly affected by age or gender. None of the parameters differed significantly between the right and left sides of the mandibular fossa in males, females, or all subjects. The anterior inclination of the mandibular fossa was affected by aging and gender becoming steeper in Asians males than females. Besides, there were no asymmetry in the right and left side inclinations of the mandibular fossa.


Assuntos
Povo Asiático , Osso Temporal/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodos , Adolescente , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Cefalometria/métodos , Criança , Fossa Craniana Média/anatomia & histologia , Fossa Craniana Média/diagnóstico por imagem , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fatores Sexuais , Osso Temporal/anatomia & histologia , Adulto Jovem
17.
Cell Rep ; 38(1): 110196, 2022 01 04.
Artigo em Inglês | MEDLINE | ID: mdl-34986352

RESUMO

Vascular endothelium plays a crucial role in vascular homeostasis and tissue fluid balance. To target endothelium for robust genome editing, we developed poly(ethylene glycol) methyl ether-block-poly(lactide-co-glycolide) (PEG-b-PLGA) copolymer-based nanoparticle formulated with polyethyleneimine. A single i.v. administration of mixture of nanoparticles and plasmid DNA expressing Cas9 controlled by CDH5 promoter and guide RNA (U6 promoter) induced highly efficient genome editing in endothelial cells (ECs) of the vasculatures, including lung, heart, aorta, and peripheral vessels in adult mice. Western blotting and immunofluorescent staining demonstrated an ∼80% decrease of protein expression selectively in ECs, resulting in a phenotype similar to that of genetic knockout mice. Nanoparticle delivery of plasmid DNA could induce genome editing of two genes or genome editing and transgene expression in ECs simultaneously. Thus, nanoparticle delivery of plasmid DNA is a powerful tool to rapidly and efficiently alter expression of gene(s) in ECs for cardiovascular research and potential gene therapy.


Assuntos
Proteína 9 Associada à CRISPR/genética , Sistemas CRISPR-Cas/genética , Endotélio Vascular/citologia , Edição de Genes/métodos , Nanopartículas/química , Plasmídeos/genética , Animais , Linhagem Celular , Repetições Palindrômicas Curtas Agrupadas e Regularmente Espaçadas/genética , Feminino , Terapia Genética/métodos , Sequenciamento de Nucleotídeos em Larga Escala , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Polietilenoimina/química , RNA Guia de Cinetoplastídeos/genética
18.
J Hazard Mater ; 423(Pt A): 127023, 2022 02 05.
Artigo em Inglês | MEDLINE | ID: mdl-34482075

RESUMO

Due to the recent boom in urbanisation, economy, and global population, the amount of waste generated worldwide has increased tremendously. The World Bank estimates that global waste generation is expected to increase 70% by 2050. Disposal of waste is already a major concern as it poses risks to the environment, human health, and economy. To tackle this issue and maximise potential environmental, economic, and social benefits, waste valorisation - a value-adding process for waste materials - has emerged as a sustainable and efficient strategy. The major objective of waste valorisation is to transit to a circular economy and maximally alleviate hazardous impacts of waste. This review conducts bibliometric analysis to construct a co-occurrence network of research themes related to management of five major waste streams (i.e., food, agricultural, textile, plastics, and electronics). Modern valorisation technologies and their efficiencies are highlighted. Moreover, insights into improvement of waste valorisation technologies are presented in terms of sustainable environmental, social, and economic performances. This review summarises highlighting factors that impede widespread adoption of waste valorisation, such as technology lock-in, optimisation for local conditions, unfavourable regulations, and low investments, with the aim of devising solutions that explore practical, feasible, and sustainable means of waste valorisation.


Assuntos
Eliminação de Resíduos , Gerenciamento de Resíduos , Alimentos , Humanos , Plásticos , Resíduos
19.
Clin Biochem ; 108: 27-41, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35843269

RESUMO

BACKGROUND: Sjogren's syndrome (SS) is a systemic autoimmune disease featured with a dry mouth and dry eyes. Several autoantibodies, including anti-SSA, anti-SSB, antinuclear antibodies can be detected in patients with SS. Oxidation-specific epitopes (OSEs) can be formed from malondialdehyde (MDA)-modified protein adducts and trigger chronic inflammation. In this study, our purposes were used serum levels of anti-MDA-modified peptide adducts autoantibodies to evaluate predictive performance by machine learning algorithms in primary Sjögren's syndrome (pSS) and assess the association between pSS and healthy controls. METHODS: Three novel MDA-modified peptide adducts, including immunoglobulin (Ig) gamma heavy chain 1 (IGHG1)102-131, complement factor H (CFAH)1045-1062, and Ig heavy constant alpha 1 (IGHA1)307-327 were identified and validated. Serum levels of protein, MDA-modified protein adducts, MDA, and autoantibodies recognizing unmodified peptides and MDA-modified peptide adducts were measured. Statistically significance in correlations and odds ratios (ORs) were estimated. RESULTS: The random forest classifier utilized autoantibodies combination composed of IgM anti-IGHG1102-131, IgM anti-IGHG1102-131 MDA and IgM anti-IGHA1307-327 achieved predictive performance as an accuracy of 88.0%, a sensitivity of 93.7%, and a specificity of 84.4% which may be as potential diagnostic biomarkers to differentiate patients with pSS from rheumatoid arthritis (RA), and secondary SS in RA and HCs. CONCLUSIONS: Our findings imply that low levels of IgA anti-IGHG1102-131 MDA (OR = 2.646), IgA anti-IGHG1102-131 (OR = 2.408), IgA anti-CFAH1045-1062 (OR = 2.571), and IgA anti-IGHA1307-327 (OR = 2.905) may denote developing risks of pSS, respectively.


Assuntos
Artrite Reumatoide , Síndrome de Sjogren , Anticorpos Antinucleares , Autoanticorpos , Biomarcadores , Fator H do Complemento , Epitopos , Feminino , Humanos , Imunoglobulina A , Imunoglobulina M , Malondialdeído , Peptídeos , Síndrome de Sjogren/diagnóstico
20.
Langmuir ; 27(5): 1930-4, 2011 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-21247181

RESUMO

We demonstrate that superhydrophobic and superoleophobic nanocellulose aerogels, consisting of fibrillar networks and aggregates with structures at different length scales, support considerable load on a water surface and also on oils as inspired by floatation of insects on water due to their superhydrophobic legs. The aerogel is capable of supporting a weight nearly 3 orders of magnitude larger than the weight of the aerogel itself. The load support is achieved by surface tension acting at different length scales: at the macroscopic scale along the perimeter of the carrier, and at the microscopic scale along the cellulose nanofibers by preventing soaking of the aerogel thus ensuring buoyancy. Furthermore, we demonstrate high-adhesive pinning of water and oil droplets, gas permeability, light reflection at the plastron in water and oil, and viscous drag reduction of the fluorinated aerogel in contact with oil. We foresee applications including buoyant, gas permeable, dirt-repellent coatings for miniature sensors and other devices floating on generic liquid surfaces.


Assuntos
Biomimética/métodos , Celulose/química , Interações Hidrofóbicas e Hidrofílicas , Membranas Artificiais , Nanoestruturas/química , Óleos/química , Água/química , Adesivos/química , Gases/química , Géis , Halogenação , Nanofibras/química , Permeabilidade , Silanos/química , Propriedades de Superfície , Viscosidade
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