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1.
Artigo em Inglês | MEDLINE | ID: mdl-38953837

RESUMO

Metabolic reprogramming is recognized as a hallmark of cancer, enabling cancer cells to acquire essential biomolecules for cell growth, often characterized by upregulated glycolysis and/or fatty acid synthesis-related genes. The transcription factor forkhead box M1 (FOXM1) has been implicated in various cancers, contributing significantly to their development, including colorectal cancer (CRC), a major global health concern. Despite FOXM1's established role in cancer, its specific involvement in the Warburg effect and fatty acid biosynthesis in CRC remains unclear. We analyzed The Cancer Genome Atlas (TCGA) Colonic Adenocarcinoma and Rectal Adenocarcinoma (COADREAD) datasets to to derive the correlation of the expression levels between FOXM1 and multiple genes and the survival prognosis based on FOXM1 expression. Using two human CRC cell lines, HT29 and HCT116, we conducted RNAi or plasmid transfection procedures, followed by a series of assays, including RNA extraction, quantitative real-time polymerase chain reaction, Western blot analysis, cell metabolic assays, and immunofluorescence analysis. Higher expression levels of FOXM1 correlated with a poorer survival prognosis, and the expression of FOXM1 was positively correlated with glycolysis-related genes SLC2A1 and LDHA, de novo lipogenesis-related genes ACACA and FASN, and MYC. FOXM1 appeared to modulate AKT/mTOR signaling, the expression of c-Myc, proteins related to glycolysis and fatty acid biosynthesis, as well as extracellular acidification rate in HT29 and HCT116 cells. In summary, FOXM1 plays a regulatory role in glycolysis, fatty acid biosynthesis, and cellular energy consumption, thereby influencing CRC cell growth and patient prognosis.

2.
J Clin Periodontol ; 51(7): 936-965, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38764386

RESUMO

AIM: To systematically identify, synthesize and critically summarize the available scientific evidence from randomized controlled trials (RCTs) regarding whether short (≤6 mm) perform as well as long (≥10 mm) implants regarding implant survival, marginal bone loss, and biologic and prosthetic complications in different clinical scenarios. MATERIALS AND METHODS: Cochrane Collaboration's risk of bias tool and the GRADE approach were applied. Results were synthesized using random-effects meta-analyses assessed by trial sequential analyses. RESULTS: Forty reports on 19 RCTs comprising 2214 (1097 short; 1117 long) implants were included. Moderate/high certainty/quality evidence demonstrated similar 5-year survival rates for ≤6-mm and ≥10-mm implants in non-augmented bone and full-mouth rehabilitation in either jaw, and for 6-mm implants in the maxilla instead of sinus lift. Nevertheless, the evidence for 5-year survival rates remains inconclusive or insufficient for the remaining combinations of implant lengths and clinical scenarios. They include 4-mm and 5-mm implants as alternatives to sinus lift as well as placing all implant lengths ≤6 mm instead of vertical ridge augmentation with long implants. Marginal bone level and short- and long-term biologic or prosthetic complications were similar. CONCLUSIONS: Based on moderate/high certainty/quality evidence from 5-year RCTs, implants ≤6 mm may be viable alternatives to ≥10-mm implants in either jaw in native bone and full-arch rehabilitation, and 6-mm implants may be used as an alternative to sinus lift. TRIAL REGISTRATION: PROSPERO ID: CRD42021254365.


Assuntos
Implantes Dentários , Ensaios Clínicos Controlados Aleatórios como Assunto , Humanos , Planejamento de Prótese Dentária , Falha de Restauração Dentária , Implantação Dentária Endóssea/métodos , Perda do Osso Alveolar
3.
J Ultrasound Med ; 43(2): 237-251, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37846622

RESUMO

OBJECTIVES: To investigate the biomechanical properties of porcine oral tissues with in vivo ultrasonography and to compare the difference between oral alveolar mucosa and gingival tissue concerning compressional and tensile mechanical strain. MATERIALS AND METHODS: Sinclair minipigs (6 females and 4 males, 6 to 18 months of age) were anesthetized for ultrasonography. In vivo high-frequency tissue harmonic ultrasound (12/24 MHz) cine-loops were obtained while inducing mechanical tissue stress (0 to 1 N). Post-processing strain analysis was performed in a cardiac speckle tracking software (EchoInsight®). Region of interest (ROI) was placed for gingival and alveolar mucosa tissues for longitudinal (compressional) and tensile strain analyses. A calibrated gel pad was employed to determine the absolute force (pressure) for the measured tissue strain response function. The resulting elasticity data was statistically analyzed using custom Matlab scripts. RESULTS: In total, 38 sonography cine-loops around the third premolars were included in the investigation. The longitudinal strain of alveolar mucosa ε AM L was found to be significantly (P < .05) larger than that of gingiva ε G L . Across the measured force range, ε AM L ~ 1.7 × Îµ G L . Significant differences between alveolar mucosa and gingiva tissues were found for all forces. The tensile strain of the alveolar mucosa ε AM T was found to be ~2 × Îµ G T (on the epithelial surface of the gingiva). Both were statistically significantly different for forces exceeding ~0.08 N. At depth, that is, 500 and 1000 µm below the epithelial surface, the gingiva was found to have less ability to stretch contrary to the alveolar mucosa. Gingival tissue at 500 µm depth has significantly less tensile strain than at its surface and more than at 1000 µm depth. In contrast, the tensile strain of alveolar mucosa is largely independent of depth. CONCLUSION: Ultrasonography can reveal significant differences in oral alveolar mucosal and gingival elastic properties, such as compressional and tensile strain. Under minute forces equivalent to 10 to 40 g, these differences can be observed. As dental ultrasound is a chairside, and noninvasive modality, obtaining real-time images might soon find clinical utility as a new diagnostic tool for the objective and quantitative assessment of periodontal and peri-implant soft tissues in clinical and research realms. As ultrasound is a safe modality with no known bioeffects, longitudinal monitoring of areas of concern would be particularly attractive.


Assuntos
Gengiva , Mucosa Bucal , Masculino , Feminino , Animais , Suínos , Mucosa Bucal/diagnóstico por imagem , Porco Miniatura , Gengiva/diagnóstico por imagem , Ultrassonografia , Elasticidade
4.
J Formos Med Assoc ; 123(2): 283-292, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37798146

RESUMO

BACKGROUND: Diabetes self-management education (DSME) improves glycemic and metabolic control. However, the frequency, duration and sustainability of DSME for improving metabolic control have not been well studied. METHODS: The Diabetes Share Care Program (DSCP) stage 1 provided DSME every 3 months. If participants entering DSCP stage 1 ≥ 2 years and HbA1c < 7%, they can be transferred to stage 2 (DSME frequency: once a year). Three-to-one matching between DSCP stage 1 and stage 2 groups based on the propensity score method to match the two groups in terms of HbA1c and diabetes duration. We identified 311 people living with type 2 diabetes in DSCP stage 1 and 86 in stage 2 and evaluated their metabolic control and healthy behaviors annually for 5 years. RESULTS: In the first year, HbA1c in the DSCP stage 2 group was significantly lower than that in the stage 1 group. In the first and the fifth years, the percentage of patients achieving HbA1c < 7% was significantly higher in the DSCP stage 2 group than the stage 1 group. There was no significant difference in other metabolic parameters between the two groups during the 5-year follow-up. Self-monitoring of blood glucose (SMBG) frequency was associated with a reduced HbA1c after 5 years (95% CI: -0.0665 to -0.0004). CONCLUSION: We demonstrated sustainable effects of at least 2-year DSME on achieving better glycemic control for at least 1 year. SMBG contributed to improved glycemic control. The results may be applied to the reimbursement strategy in diabetes education.


Assuntos
Diabetes Mellitus Tipo 2 , Autogestão , Humanos , Diabetes Mellitus Tipo 2/terapia , Taiwan , Hemoglobinas Glicadas , Comportamentos Relacionados com a Saúde
5.
Int J Mol Sci ; 24(7)2023 Mar 29.
Artigo em Inglês | MEDLINE | ID: mdl-37047400

RESUMO

Three waves of hematopoiesis occur in the mouse embryo. The primitive hematopoiesis appears as blood islands in the extra embryonic yolk sac at E7.5. The extra embryonic pro-definitive hematopoiesis launches in late E8 and the embryonic definitive one turns on at E10.5 indicated by the emergence of hemogenic endothelial cells on the inner wall of the extra embryonic arteries and the embryonic aorta. To study the roles of SCL protein isoforms in murine hematopoiesis, the SCL-large (SCL-L) isoform was selectively destroyed with the remaining SCL-small (SCL-S) isoform intact. It was demonstrated that SCL-S was specifically expressed in the hemogenic endothelial cells (HECs) and SCL-L was only detected in the dispersed cells after budding from HECs. The SCLΔ/Δ homozygous mutant embryos only survived to E10.5 with normal extra embryonic vessels and red blood cells. In wild-type mouse embryos, a layer of neatly aligned CD34+ and CD43+ cells appeared on the endothelial wall of the aorta of the E10.5 fetus. However, the cells at the same site expressed CD31 rather than CD34 and/or CD43 in the E10.5 SCLΔ/Δ embryo, indicating that only the endothelial lineage was developed. These results reveal that the SCL-S is sufficient to sustain the primitive hematopoiesis and SCL-L is necessary to launch the definitive hematopoiesis.


Assuntos
Células Endoteliais , Hematopoese , Camundongos , Animais , Hematopoese/genética , Desenvolvimento Embrionário/genética , Embrião de Mamíferos/metabolismo , Endotélio
6.
Int J Mol Sci ; 24(19)2023 Oct 05.
Artigo em Inglês | MEDLINE | ID: mdl-37834377

RESUMO

The herbal medicine perilla leaf extract (PLE) exhibits various pharmacological properties. We showed that PLE inhibits the viability of oral squamous cell carcinoma (OSCC) cells. HPLC analysis revealed that caffeic acid (CA) and rosmarinic acid (RA) are the two main phenols in PLE, and reduced OSCC cell viability in a dose-dependent manner. The optimal CA/RA combination ratio was 1:2 at concentrations of 300-500 µM but had no synergistic inhibitory effect on the viability of OSCC cells. CA, RA, or their combination effectively suppressed interleukin (IL)-1ß secretion by OSCC OC3 cells. Long-term treatment with CA and CA/RA mixtures, respectively, induced EGFR activation, which might cause OC3 cells to become EGFR-dependent and consequently increased the sensitivity of OC3 cells to a low dose (5 µM) of the EGFR tyrosine kinase inhibitor gefitinib. Chronic treatment with CA, RA, or their combination exhibited an inhibitory effect more potent than that of low-dose (1 µM) cisplatin on the colony formation ability of OSCC cells; this may be attributed to the induction of apoptosis by these treatments. These findings suggest that perilla phenols, particularly CA and RA, can be used as adjuvant therapies to improve the efficacy of chemotherapy and EGFR-targeted therapy in OSCC.


Assuntos
Carcinoma de Células Escamosas , Neoplasias de Cabeça e Pescoço , Neoplasias Bucais , Perilla , Humanos , Carcinoma de Células Escamosas/tratamento farmacológico , Carcinoma de Células Escamosas/patologia , Carcinoma de Células Escamosas de Cabeça e Pescoço , Neoplasias Bucais/tratamento farmacológico , Neoplasias Bucais/patologia , Receptores ErbB , Apoptose , Linhagem Celular Tumoral , Proliferação de Células
7.
J Biomed Sci ; 28(1): 81, 2021 Nov 24.
Artigo em Inglês | MEDLINE | ID: mdl-34819065

RESUMO

BACKGROUND: RAD51-dependent homologous recombination (HR) is one of the most important pathways for repairing DNA double-strand breaks (DSBs), and its regulation is crucial to maintain genome integrity. Elp1 gene encodes IKAP/ELP1, a core subunit of the Elongator complex, which has been implicated in translational regulation. However, how ELP1 contributes to genome maintenance is unclear. METHODS: To investigate the function of Elp1, Elp1-deficient mouse embryonic fibroblasts (MEFs) were generated. Metaphase chromosome spreading, immunofluorescence, and comet assays were used to access chromosome abnormalities and DSB formation. Functional roles of Elp1 in MEFs were evaluated by cell viability, colony forming capacity, and apoptosis assays. HR-dependent DNA repair was assessed by reporter assay, immunofluorescence, and western blot. Polysome profiling was used to evaluate translational efficiency. Differentially expressed proteins and signaling pathways were identified using a label-free liquid chromatography-tandem mass spectrometry (LC-MS/MS) proteomics approach. RESULTS: Here, we report that Elp1 depletion enhanced genomic instability, manifested as chromosome breakage and genotoxic stress-induced genomic DNA fragmentation upon ionizing radiation (IR) exposure. Elp1-deficient cells were hypersensitive to DNA damage and exhibited impaired cell proliferation and defective HR repair. Moreover, Elp1 depletion reduced the formation of IR-induced RAD51 foci and decreased RAD51 protein levels. Polysome profiling analysis revealed that ELP1 regulated RAD51 expression by promoting its translation in response to DNA damage. Notably, the requirement for ELP1 in DSB repair could be partially rescued in Elp1-deficient cells by reintroducing RAD51, suggesting that Elp1-mediated HR-directed repair of DSBs is RAD51-dependent. Finally, using proteome analyses, we identified several proteins involved in cancer pathways and DNA damage responses as being differentially expressed upon Elp1 depletion. CONCLUSIONS: Our study uncovered a molecular mechanism underlying Elp1-mediated regulation of HR activity and provides a novel link between translational regulation and genome stability.


Assuntos
Quebra Cromossômica , Dano ao DNA/genética , Peptídeos e Proteínas de Sinalização Intracelular/genética , Biossíntese de Proteínas/genética , Rad51 Recombinase/genética , Reparo de DNA por Recombinação/genética , Animais , Fibroblastos , Instabilidade Genômica , Peptídeos e Proteínas de Sinalização Intracelular/metabolismo , Camundongos , Rad51 Recombinase/metabolismo
8.
Clin Oral Investig ; 25(7): 4269-4280, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33928441

RESUMO

OBJECTIVES: Microsurgical principles, techniques, and armamentarium have made significant contributions to the periodontal plastic surgery. The present meta-analysis aimed to investigate the overall efficacy of microsurgery on root coverage, and its clinical outcomes when compared to traditional macrosurgery. MATERIAL AND METHODS: Electronic searches on PubMed, Embase, and CINAHL were used to retrieve prospective clinical trials. Primary outcomes were the mean root coverage (mRC) and probability of achieving complete root coverage (cRC), with secondary outcomes as other periodontal parameters and patient-reported outcome measures (PROMs). RESULTS: Nineteen studies were included in the quantitative analysis. Microsurgery was estimated to achieve 83.3% mRC and 69.3% cRC. From a subgroup of 9 comparative studies, it was estimated microsurgery increased mRC by 6.6% (p<0.001) and cRC by 27.9% (p<0.01) compared to macrosurgical control treatments. Operating microscope (OM) yielded a significantly 6.7% higher mRC than the control group (p=0.002), while using loupes showed 6.16% increase in mRC with a borderline significance (p=0.09). OM and loupes-only had a 31.05% (p=0.001) and 25.54% (p=0.001) increases in achieving cRC compared to control, respectively. As for PROMs, microsurgery reduced postoperative pain (p<0.001) and enhanced esthetics (p= 0.05). CONCLUSIONS: Microsurgery significantly improved mean root coverage, probability of achieving complete root coverage, esthetics, and post-surgical recovery. Microsurgery enhances not only subclinical healing but also clinical outcomes, possibly owing to its minimally invasive approach and surgical precision. CLINICAL RELEVANCE: Periodontal plastic microsurgery is minimally invasive, inducing less surgical trauma and ultimately resulting in improved clinical outcomes, patient's satisfaction, and quality of life.


Assuntos
Retração Gengival , Tecido Conjuntivo , Estética Dentária , Gengiva , Retração Gengival/cirurgia , Humanos , Microcirurgia , Estudos Prospectivos , Qualidade de Vida , Retalhos Cirúrgicos/cirurgia , Raiz Dentária/cirurgia , Resultado do Tratamento
9.
J Esthet Restor Dent ; 33(1): 212-223, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33459483

RESUMO

OBJECTIVE: To provide a contemporary and comprehensive overview of the hard and soft tissue biological structures surrounding an osseointegrated dental implant (peri-implant referred to as the peri-implant phenotype), in the context of peri-implant esthetic complications. OVERVIEW: The individual components of the peri-implant phenotype (keratinized mucosa width, mucosal thickness, supracrestal tissue height, and the peri-implant buccal bone) have been linked to different aspects of implant esthetics, as well as health-related aspects. At the time of implant therapy, respecting the biology of the peri-implant hard and soft tissues, and anticipating their remodeling patterns can alleviate future esthetic complications. CONCLUSIONS: While the current literature may not allow for a point-by-point evidence based-recommendation for the required amount of each peri-implant structure, bearing in mind the proposed values for the components of the peri-implant phenotype, at the time of and prior to implant therapy can lead to more predictable treatment outcomes, and the avoidance of esthetic complications. CLINICAL SIGNIFICANCE: Knowledge of hard and soft tissue components surrounding and osseointegrated dental implant, and their underlying biological remodeling process is crucial for carrying out a successful therapy and alleviating possible future esthetic challenges.


Assuntos
Implantes Dentários para Um Único Dente , Implantes Dentários , Implantação Dentária Endóssea , Estética Dentária , Fenótipo
10.
J Cell Physiol ; 234(7): 11265-11275, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-30499104

RESUMO

Non-small-cell lung cancer (NSCLC) accounts for the majority of the lung cancer cases that have become a leading cause of cancer deaths worldwide. Overexpression of transcription factor forkhead box M1 (FOXM1) is involved in the inauspicious development of several types of cancer, including lung tumor aggressiveness. Our laboratory has previously found that MED28, a Mediator subunit for transcriptional activation, modulates cell growth, epithelial-mesenchymal transition, migration, and invasion in human breast cancer cells. The objective of the current study is to investigate the potential role of MED28 and FOXM1 in NSCLC. In addition to A549 and PC9 cells, we also used a doxycycline-inducible system to generate FOXM1-overexpressed A549-DN cells, and we explored the connection of MED28 with FOXM1 and their effect on migration. Herein, we report that the increased expression levels of both MED28 and FOXM1 elevated the expression of matrix metalloproteinase 2 (MMP2), a metastasis marker, which enhanced cell migration and matrigel invasion of NSCLC cells. Furthermore, MED28 interacted with FOXM1, and both exhibited a mutual effect on the expression and subcellular localization. Moreover, MED28 small interfering RNA-mediated MMP2 gene suppression could be attenuated by inducible expression of a constitutively active form of FOXM1, which consequently restored the migration and invasion ability of NSCLC cells. Our data indicate that MED28 interacts with FOXM1, and each affects the expression and localization of the other, and, more importantly, both regulate MMP2-dependent migration and invasion in human lung cancer cells.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/patologia , Proteína Forkhead Box M1/metabolismo , Neoplasias Pulmonares/patologia , Metaloproteinase 2 da Matriz/metabolismo , Complexo Mediador/metabolismo , Células A549 , Carcinoma Pulmonar de Células não Pequenas/genética , Linhagem Celular Tumoral , Movimento Celular/genética , Proliferação de Células , Transição Epitelial-Mesenquimal/genética , Proteína Forkhead Box M1/genética , Regulação Neoplásica da Expressão Gênica/genética , Células HEK293 , Humanos , Neoplasias Pulmonares/genética , Complexo Mediador/genética , Invasividade Neoplásica/genética , Interferência de RNA , RNA Interferente Pequeno/genética
11.
J Clin Periodontol ; 46(10): 1061-1069, 2019 10.
Artigo em Inglês | MEDLINE | ID: mdl-31292983

RESUMO

INTRODUCTION: There are mixed results regarding the aesthetic advantage of immediate provisionalization of dental implants. Therefore, this study aimed to compare facial mucosal level of single immediately placed implants with and without immediate provisionalization. METHODS: Single implants were immediately placed to replace a hopeless maxillary anterior or premolar tooth in 40 subjects. Each implant was randomly assigned to receive a non-occluding temporary crown or a healing abutment after implant placement. At 4 months, these implants were permanently restored and followed up for 12 months. Clinical and radiographic parameters were measured and compared. RESULTS: The implant survival rate at 12 months in the test and control group was 90% and 100%, respectively. Mid-facial mucosal marginal level and papilla height changes were minimal within groups, and no significant differences were found between the two groups. The amount of marginal bone remodelling was modest, with no significant difference between the two groups. Radiographic bone changes were not statistically different between the groups, except for the vertical crestal bone resorption. CONCLUSION: Immediate implant placement with or without provisionalization can achieve stable vertical soft tissue level for 12 months as compared to pre-extraction level. However, immediate provisionalization was not able to improve the aesthetic outcome further.


Assuntos
Implantes Dentários para Um Único Dente , Carga Imediata em Implante Dentário , Coroas , Implantação Dentária Endóssea , Estética Dentária , Seguimentos , Maxila , Alvéolo Dental , Resultado do Tratamento
12.
J Clin Periodontol ; 46(1): 118-142, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30362137

RESUMO

AIM: To compare the clinical outcomes of ≤6 mm extra-short implants (test group) versus ≥10 mm long implants (control group), with and without bone augmentation procedures. MATERIALS AND METHODS: A systemic literature search of randomized clinical trials was performed using the PubMed (MEDLINE) and EMBASE databases. A quantitative meta-analysis was conducted to compare all the outcome variables. Meta-regression analysis determined the effect of bone augmentation procedures and the influence of other clinical covariates on the results. RESULTS: Eighteen studies comprising 1,612 implants (793 extra-short and 820 long implants) were selected for the meta-analysis. No statistically significant difference in the survival rate was observed at 1 and 3 years (p > 0.05). Extra-short implants displayed less marginal bone loss (MBL) from both implant placement time points (1 and 3 years) and prosthetic placement (1 year), as well as less biological complications, surgical time and treatment cost (p < 0.05). Contrarily, a statistically significant small number of prosthetic complications were reported with long implants (p < 0.05). CONCLUSIONS: Placement of extra-short implants (≤6 mm) presented as an equivalent option in the treatment of patients with an atrophic posterior arch up to 3-year follow-up. However, the long-term effectiveness of extra-short dental implants remains to be further studied.


Assuntos
Implantes Dentários , Planejamento de Prótese Dentária , Implantação Dentária Endóssea , Prótese Dentária Fixada por Implante , Falha de Restauração Dentária , Humanos , Medidas de Resultados Relatados pelo Paciente , Ensaios Clínicos Controlados Aleatórios como Assunto , Resultado do Tratamento
13.
Implant Dent ; 28(6): 590-602, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31274666

RESUMO

PURPOSE: To compare the clinical and patient-reported outcomes of ≤6-mm implants with those of ≥10-mm implants placed after both lateral and transcrestal sinus floor elevation. MATERIALS AND METHODS: Using PubMed (MEDLINE), EMBASE, and Cochrane, a literature search for randomized controlled trials was performed. All the outcome variables were evaluated through a quantitative meta-analysis, and the influence of other clinical covariates were determined with a metaregression. For the survival outcomes, trial sequential analysis (TSA) was performed to adjust results for type I and II errors and to analyze the power of the available evidence. RESULTS: After full-text reading, 12 studies were included in the analyses. No statistically significant difference was found after 3 years between the 2 study groups (P = 0.36). Short implants displayed fewer biological complications (P = 0.05), less marginal bone loss (MBL) from implant placement (P < 0.01), and reduced surgical time and treatment cost. However, long implants showed a statistically significant smaller number of prosthetic complications (P = 0.03). TSA confirmed the results of the meta-analysis, revealing that additional studies are needed due to low statistical power of the available evidence. CONCLUSION: The placement of short implants is a predictable option in treating patients with maxillary atrophy up to a 3-year follow-up. Studies with a longer observational period are needed to study the long-term performance of these implants.


Assuntos
Implantes Dentários , Planejamento de Prótese Dentária , Levantamento do Assoalho do Seio Maxilar , Atrofia , Consenso , Implantação Dentária Endóssea , Falha de Restauração Dentária , Humanos , Maxila , Ensaios Clínicos Controlados Aleatórios como Assunto , Resultado do Tratamento
14.
EMBO J ; 32(2): 231-44, 2013 Jan 23.
Artigo em Inglês | MEDLINE | ID: mdl-23288041

RESUMO

Alveolar epithelial cells (AECs) participate in the pathogenesis of pulmonary fibrosis, producing pro-inflammatory mediators and undergoing epithelial-to-mesenchymal transition (EMT). Herein, we demonstrated the critical role of Forkhead Box M1 (Foxm1) transcription factor in radiation-induced pulmonary fibrosis. Foxm1 was induced in AECs following lung irradiation. Transgenic expression of an activated Foxm1 transcript in AECs enhanced radiation-induced pneumonitis and pulmonary fibrosis, and increased the expression of IL-1ß, Ccl2, Cxcl5, Snail1, Zeb1, Zeb2 and Foxf1. Conditional deletion of Foxm1 from respiratory epithelial cells decreased radiation-induced pulmonary fibrosis and prevented the increase in EMT-associated gene expression. siRNA-mediated inhibition of Foxm1 prevented TGF-ß-induced EMT in vitro. Foxm1 bound to and increased promoter activity of the Snail1 gene, a critical transcriptional regulator of EMT. Expression of Snail1 restored TGF-ß-induced loss of E-cadherin in Foxm1-deficient cells in vitro. Lineage-tracing studies demonstrated that Foxm1 increased EMT during radiation-induced pulmonary fibrosis in vivo. Foxm1 is required for radiation-induced pulmonary fibrosis by enhancing the expression of genes critical for lung inflammation and EMT.


Assuntos
Transição Epitelial-Mesenquimal/genética , Fatores de Transcrição Forkhead/fisiologia , Fibrose Pulmonar/genética , Animais , Células Cultivadas , Transição Epitelial-Mesenquimal/fisiologia , Fibrose/etiologia , Fibrose/genética , Fibrose/metabolismo , Proteína Forkhead Box M1 , Fatores de Transcrição Forkhead/genética , Fatores de Transcrição Forkhead/metabolismo , Regulação da Expressão Gênica/fisiologia , Humanos , Pulmão/metabolismo , Pulmão/patologia , Pulmão/efeitos da radiação , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Transgênicos , Pneumonia/genética , Pneumonia/metabolismo , Fibrose Pulmonar/etiologia , Fibrose Pulmonar/patologia , Lesões Experimentais por Radiação/genética , Lesões Experimentais por Radiação/metabolismo , Lesões Experimentais por Radiação/patologia
15.
Implant Dent ; 26(5): 751-755, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28914631

RESUMO

PURPOSE: The primary aim of this study was to evaluate the buccal bone concavity position and depth in the anterior maxilla. The accuracy of cone beam computed tomography (CBCT) to measure the buccal bone concavity was also investigated. MATERIAL AND METHODS: Eleven fresh cadaver heads were used in this study. CBCT images were first acquired, on which the location and depth of the buccal bone concavity were measured in maxillary incisors and canines. After full-thickness mucoperiosteal flap reflection, the corresponding measurements were made directly on cadavers. The accuracy and correlations between direct and image-derived measurements were analyzed statistically. RESULTS: A total of 53 sites were measured. The mean depths were 2.88 ± 1.37 mm and 2.40 ± 1.29 mm (with direct and CBCT measurement, respectively). The deepest concavities were found in the lateral incisors sites (3.15 ± 1.32 mm). There was a statistically significant underestimation of the depth of concavity (0.2 to 0.6 mm) by CBCT. Nevertheless, there is a high statistical correlation (r = 0.8) between the direct and CBCT measurements. CONCLUSIONS: Within the limitations of this study, it can be concluded that buccal bone concavity is the most prominent at the lateral incisor sites. The CBCT readings were highly correlated but underestimated to the direct measurements.


Assuntos
Estética Dentária , Zigoma/anatomia & histologia , Idoso , Idoso de 80 Anos ou mais , Tomografia Computadorizada de Feixe Cônico , Feminino , Humanos , Masculino , Maxila/anatomia & histologia , Maxila/diagnóstico por imagem , Pessoa de Meia-Idade , Valores de Referência , Zigoma/diagnóstico por imagem
16.
J Air Waste Manag Assoc ; 66(3): 296-306, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26651506

RESUMO

UNLABELLED: Valuable metal materials can be recovered from spent nickel-metal hydride (NiMH) batteries. However, little attention has been paid to the metal compositions of individual components of NiMH batteries, although this is important for the selection of the appropriate recycling process. In this study, NiMH batteries were manually disassembled to identify the components and to characterize the metals in each of these. A preliminary economic analysis was also conducted to evaluate the recovery of valuable metals from spent NiMH batteries using thermal melting versus simple mechanical separation. The results of this study show that metallic components account for more than 60% of battery weight. The contents of Ni, Fe, Co, and rare earth elements (REEs) (i.e., valuable metals of interest for recovery) in a single battery were 17.9%, 15.4%, 4.41%, and 17.3%, respectively. Most of the Fe was in the battery components of the steel cathode collector, cathode cap, and anode metal grid, while Ni (>90%) and Co (>90%) were mainly in the electrode active materials (anode and cathode metal powders). About 1.88 g of REEs (Ce, La, and Y) could be obtained from one spent NiMH battery. The estimated profits from recovering valuable metals from spent NiMH batteries by using thermal melting and mechanical processes are 2,329 and 2,531 USD/ton, respectively, when including a subsidy of 1,710 USD/ton. The findings of this study are very useful for further research related to technical and economic evaluations of the recovery of valuable metals from spent NiMH batteries. IMPLICATIONS: The spent nickel-metal hydride (NiMH) batteries were manually disassembled and their components were identified. The metals account for more than 60% of battery weight, when Ni, Fe, Co, and rare earth elements (REEs) were 17.9%, 15.4%, 4.41%, and 17.3%, respectively, in a single battery. The estimated profits of recovering valuable metals from NiMH batteries by using thermal melting and mechanical processing are 2,329 and 2,531 USD/ton, respectively, when including a subsidy of 1,710 USD/ton. These findings are very useful to develop or select the recovery methods of valuable metals from spent NiMH batteries.


Assuntos
Resíduo Eletrônico , Fontes Geradoras de Energia , Níquel/química , Reciclagem/economia , Eliminação de Resíduos/economia , Conservação dos Recursos Naturais/economia , Poluentes Ambientais/análise , Eliminação de Resíduos/métodos
17.
Clin Adv Periodontics ; 14(1): 30-37, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36700452

RESUMO

BACKGROUND: Ridge regeneration for implant therapy requires comprehensive site evaluation and wound healing monitoring. This case report aimed to demonstrate ultrasound (US) can image soft and hard tissues for surgical planning and assess longitudinal outcomes. METHODS AND RESULTS: US was used in a patient planned for ridge augmentation to evaluate soft tissue thickness, location of muscle attachment, and hard tissue defect features presurgically. US were obtained at 1, 2.5, and 5 months afterward to assess tissue healing. Preoperatively, US showed ∼2.5 mm and ∼0.8 mm soft tissue thickness on the facial and lingual sides, respectively. The crestal bone width was ∼2 mm, with severe facial bone deficiency and high muscle attachment. US showed wound approximation and ridge width gain to 4.5 and 4.0 mm at 1 and 5 months, respectively. US tissue perfusion increased to ∼two-fold and ∼4-fold at 1 and 2.5 months and reduced below the baseline at 5 months. An implant with simultaneous bone augmentation was performed accordingly. Tissue phenotype around the implant was measured on US images at 1-year visit. CONCLUSIONS: This case report demonstrated that US parameters could be valuable for planning and wound healing outcome assessment of ridge augmentation in clinical as well as research settings. KEY POINTS: Why is this case new information? Novel high-resolution, chairside ultrasound was proposed to facilitate treatment planning and wound healing outcome assessment of ridge augmentation in clinical as well as research settings. What are the keys to successful use of this technology? Proper training in imaging acquisition and interpretation Adhere to high-level disinfection protocol Patient education and explanation What are the primary limitations to success in using this technology? Investment in this technology Learning curve in imaging acquisition and reading Insurance reimbursement strategy.


Assuntos
Aumento do Rebordo Alveolar , Implantes Dentários , Humanos , Implantação Dentária Endóssea , Aumento do Rebordo Alveolar/métodos , Cicatrização/fisiologia , Ultrassonografia
18.
Dev Biol ; 370(2): 198-212, 2012 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-22885335

RESUMO

Respiratory epithelial cells are derived from cell progenitors in the foregut endoderm that subsequently differentiate into the distinct cell types lining the conducting and alveolar regions of the lung. To identify transcriptional mechanisms regulating differentiation and maintenance of respiratory epithelial cells, we conditionally deleted Foxm1 transcription factor from the conducting airways of the developing mouse lung. Conditional deletion of Foxm1 from Clara cells, controlled by the Scgb1a1 promoter, dramatically altered airway structure and caused peribronchial fibrosis, resulting in airway hyperreactivity in adult mice. Deletion of Foxm1 inhibited proliferation of Clara cells and disrupted the normal patterning of epithelial cell differentiation in the bronchioles, causing squamous and goblet cell metaplasia, and the loss of Clara and ciliated cells. Surprisingly, conducting airways of Foxm1-deficient mice contained highly differentiated cuboidal type II epithelial cells that are normally restricted to the alveoli. Lineage tracing studies showed that the ectopic alveolar type II cells in Foxm1-deficient airways were derived from Clara cells. Deletion of Foxm1 inhibited Sox2 and Scgb1a1, both of which are critical for differentiation and function of Clara cells. In co-transfection experiments, Foxm1 directly bound to and induced transcriptional activity of Scgb1a1 and Sox2 promoters. Foxm1 is required for differentiation and maintenance of epithelial cells lining conducting airways.


Assuntos
Diferenciação Celular , Proliferação de Células , Fatores de Transcrição Forkhead/metabolismo , Sistema Respiratório/citologia , Sistema Respiratório/crescimento & desenvolvimento , Animais , Células Epiteliais/citologia , Proteína Forkhead Box M1 , Fatores de Transcrição Forkhead/genética , Deleção de Genes , Pulmão/citologia , Pulmão/crescimento & desenvolvimento , Camundongos , Alvéolos Pulmonares/citologia , Fatores de Transcrição SOXB1/metabolismo , Transcriptoma , Uteroglobina/metabolismo
19.
J Med Internet Res ; 15(12): e266, 2013 Dec 09.
Artigo em Inglês | MEDLINE | ID: mdl-24323283

RESUMO

BACKGROUND: Self-management is an important skill for patients with diabetes, and it involves frequent monitoring of glucose levels and behavior modification. Techniques to enhance the behavior changes of diabetic patients have been developed, such as diabetes self-management education and telehealthcare. Although the patients are engaged in self-management activities, barriers to behavior changes remain and additional work is necessary to address the impact of electronic media and telehealthcare on patient self-care behaviors. OBJECTIVE: The aims of this study were to (1) explore the behaviors of diabetic patients interacting with online applications, (2) determine the impact of a telehealthcare program among 7 self-care behaviors of the patients, and (3) determine the changes in glycosylated hemoglobin (HbA1c) levels. METHODS: A telehealthcare program was conducted to assist the patients with 7 self-care activities. The telehealthcare program lasted for 18 months and included the use of a third-generation mobile telecommunications glucometer, an online diabetes self-management system, and a teleconsultant service. We analyzed the data of 59 patients who participated in the telehealthcare program and 103 who did not. The behavioral assessments and the HbA1c data were collected and statistically analyzed to determine whether the telehealthcare services had an impact on the patients. We divided the 18-month period into 3 6-month intervals and analyzed the parameters of patients assisted by the telehealthcare service at different time points. We also compared the results of those who were assisted by the telehealthcare service with those who were not. RESULTS: There was a significant difference in monitoring blood glucose between the beginning and the end of the patient participation (P=.046) and between the overall period and the end of patient participation (P<.001). Five behaviors were significantly different between the intervention and control patients: being active (P<.001), healthy eating (P<.001), taking medication (P<.001), healthy coping (P=.02), and problem solving (P<.001). Monitoring of blood glucose was significantly different (P=.02) during the 6-12 month stage of patient participation between the intervention and control patients. A significant difference between the beginning and the 6-12 month stage of patient participation was observed for the mean value of HbA1c level (P=.02), and the differences between the overall HbA1c variability and the variability of each 6-month interval was also significant. CONCLUSIONS: Telehealthcare had a positive effect on diabetic patients. This study had enhanced blood glucose monitoring, and the patients in the program showed improvements in glycemic control. The self-care behaviors affect patient outcomes, and the changes of behavior require time to show the effects.


Assuntos
Diabetes Mellitus Tipo 1/psicologia , Diabetes Mellitus Tipo 1/terapia , Diabetes Mellitus Tipo 2/psicologia , Diabetes Mellitus Tipo 2/terapia , Autocuidado , Telemedicina/métodos , Adulto , Automonitorização da Glicemia , Diabetes Mellitus Tipo 1/sangue , Diabetes Mellitus Tipo 2/sangue , Feminino , Hemoglobinas Glicadas/metabolismo , Comportamentos Relacionados com a Saúde , Hospitais Universitários , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Educação de Pacientes como Assunto , Participação do Paciente , Projetos Piloto , Taiwan
20.
J Med Syst ; 37(2): 9931, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23423776

RESUMO

Disease management is a program which attempts to overcome the fragmentation of healthcare system and improve the quality of care. Many studies have proven the effectiveness of disease management. However, the case managers were spending the majority of time in documentation, coordinating the members of the care team. They need a tool to support them with daily practice and optimizing the inefficient workflow. Several discussions have indicated that information technology plays an important role in the era of disease management. Whereas applications have been developed, it is inefficient to develop information system for each disease management program individually. The aim of this research is to support the work of disease management, reform the inefficient workflow, and propose an architecture model that enhance on the reusability and time saving of information system development. The proposed architecture model had been successfully implemented into two disease management information system, and the result was evaluated through reusability analysis, time consumed analysis, pre- and post-implement workflow analysis, and user questionnaire survey. The reusability of the proposed model was high, less than half of the time was consumed, and the workflow had been improved. The overall user aspect is positive. The supportiveness during daily workflow is high. The system empowers the case managers with better information and leads to better decision making.


Assuntos
Gerenciamento Clínico , Sistemas de Informação/organização & administração , Software , Integração de Sistemas , Adulto , Administração de Caso , Sistemas Computacionais , Feminino , Humanos , Masculino , Informática Médica , Pessoa de Meia-Idade , Garantia da Qualidade dos Cuidados de Saúde , Inquéritos e Questionários
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