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1.
Phys Rev Lett ; 131(23): 236003, 2023 Dec 08.
Artigo em Inglês | MEDLINE | ID: mdl-38134800

RESUMO

Spin-triplet superconductors play central roles in Majorana physics and quantum computing but are difficult to identify. We show the methods of kink-point upper critical field and flux quantization in superconducting rings can unequivocally identify spin-singlet, spin-triplet in centrosymmetric superconductors, and singlet-triplet admixture in noncentrosymmetric superconductors, as realized in γ-BiPd, ß-Bi_{2}Pd, and α-BiPd, respectively. Our findings are essential for identifying triplet superconductors and exploring their quantum properties.

2.
J Struct Biol ; 213(1): 107695, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33421545

RESUMO

The presence of preferred orientations in single particle analysis (SPA) by cryo-Electron Microscopy (cryoEM) is currently one of the hurdles preventing many structural analyses from yielding high-resolution structures. Although the existence of preferred orientations is mostly related to the grid preparation, in this technical note, we show that some image processing algorithms used for angular assignment and three-dimensional (3D) reconstruction are more robust than others to these detrimental conditions. We exemplify this argument with three different data sets in which the presence of preferred orientations hindered achieving a 3D reconstruction without artifacts or, even worse, a 3D reconstruction could never be achieved.


Assuntos
Microscopia Crioeletrônica/métodos , Imagem Individual de Molécula/métodos , Algoritmos , Artefatos , Processamento de Imagem Assistida por Computador/métodos , Imageamento Tridimensional/métodos
3.
Phys Rev Lett ; 127(8): 085501, 2021 Aug 20.
Artigo em Inglês | MEDLINE | ID: mdl-34477411

RESUMO

Direct correlation functions (DCFs), linked to the second functional derivative of the free energy with respect to the one-particle density, play a fundamental role in a statistical mechanics description of matter. This holds, in particular, for the ordered phases: DCFs contain information about the local structure including defects and encode the thermodynamic properties of crystalline solids; they open a route to the elastic constants beyond low temperature expansions. Via a demanding numerical approach, we have explicitly calculated for the first time the DCF of a solid: based on the fundamental measure concept, we provide results for the DCF of a hard sphere crystal. We demonstrate that this function differs at coexistence significantly from its liquid counterpart-both in shape as well as in its order of magnitude-because it is dominated by vacancies. We provide evidence that the traditional use of liquid DCFs in functional Taylor expansions of the free energy is conceptually wrong and show that the emergent elastic constants are in good agreement with simulation-based results.

4.
Clin Radiol ; 76(4): 316.e19-316.e28, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33551151

RESUMO

AIM: To evaluate the postoperative magnetic resonance imaging (MRI) findings of intracranial foreign body granulomas (FBGs) and true recurrent tumours (RTs) and thus lead to a basis for management decision-making. MATERIALS AND METHODS: Twenty-two patients with previous brain tumour surgery were diagnosed clinically with RT and underwent surgery. Re-operative pathology revealed FBG in eight patients and RT in 14 patients. MRI findings before the initial operation were compared to those before the re-operation. RESULTS: Features of FBGs versus RTs on MRI were as follows: (1) mean lesion size: 1.3 ± 0.7 (0.5-2.6) versus 3.2 ± 1.7 (1.1-6.3) cm (p=0.001, odds ratio [OR] = 4.18); (2) hypointensity on T2-weighted imaging (WI): 6/8 (75%) versus 0/14 (0%; p<0.001, OR=75.4); (3) non-restricted diffusion on diffusion-WI (DWI): 6/8 (75%) versus 2/14 (14.3%; p=0.008, OR=18); and (4) "ring and bubble" appearance on contrast-enhanced T1WI: 7/8 (87.5%) versus 2/14 (14.3%; p=0.001, OR=42). In comparison with their original tumours, the FBGs in the FBG group showed significantly lower T2 signal intensity, lower signal on DWI, and more cases of non-restricted diffusion on DWI (p=0.04, 0.04, 0.04, respectively). CONCLUSION: On brain MRI, FBGs can be differentiated from RTs by their relatively smaller size, hypointensity on T2WI, lack of restricted diffusion on DWI, and "ring and bubble" appearance on contrast-enhanced T1WI. Comparing the MRI findings of the focal lesion in the tumour bed with those of the original tumour is suggested to enhance diagnostic confidence.


Assuntos
Neoplasias Encefálicas/diagnóstico por imagem , Granuloma de Corpo Estranho/diagnóstico por imagem , Imageamento por Ressonância Magnética , Recidiva Local de Neoplasia/diagnóstico por imagem , Complicações Pós-Operatórias/diagnóstico por imagem , Adolescente , Adulto , Idoso , Neoplasias Encefálicas/patologia , Neoplasias Encefálicas/cirurgia , Criança , Pré-Escolar , Tomada de Decisão Clínica , Diagnóstico Diferencial , Feminino , Seguimentos , Granuloma de Corpo Estranho/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/patologia , Recidiva Local de Neoplasia/cirurgia , Complicações Pós-Operatórias/patologia , Reoperação , Adulto Jovem
5.
Int Endod J ; 54(8): 1317-1327, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33711171

RESUMO

AIM: To explore the proliferation, adhesion and differentiation response and the underlying mechanisms that occur in lipopolysaccharide (LPS)-induced inflamed dental pulp cells (DPCs) in contact with Biodentine and mineral trioxide aggregate (MTA). METHODOLOGY: The DPCs were isolated from three healthy donors and named DPC-H1 to DPC-H3. The DPCs were pre-cultured with 2 or 5 µg mL-1 LPS for 24 h to induce inflammation. The expression of inflammation marker miR-146a was detected by q-PCR. The normal and LPS-induced DPCs were further treated with 0.14 mg mL-1 Biodentine or 0.13 mg mL-1 MTA for 24 h. MTT assay and adhesion assay were used to analyse the changes of cell phenotypes. DSPP, AKT and ERK expressions were detected by Western blotting. The data were analysed by Mann-Whitney test or two-way anova. Differences were considered statistically significant when P < 0.05. RESULTS: In LPS-induced DPCs, Biodentine and MTA treatment neither induced nor aggravated LPS-induced inflammation, but their presence did increase the expression of the odontogenic differentiation marker DSPP. Under 2 or 5 µg mL-1 LPS-induced inflammation, Biodentine and MTA promoted the proliferation of DPC cells, and significantly in DPC-H2 (P < 0.0001 for both reagents). With the treatment of 2 µg mL-1 LPS, the cell adhesion of DPCs on the fibronectin-coated culture plates was increased significantly by Biodentine (P = 0.0413) and MTA (P < 0.0001). Biodentine and MTA regulated cell adhesion on the fibronectin-coated culture plates (P < 0.0001 for both reagents) and proliferation (P < 0.0001 for both reagents) via the AKT pathway. However, the AKT pathway was not involved in the expression of DSPP induced by Biodentine and MTA. CONCLUSION: Biodentine and MTA enhanced the proliferation, adhesion and differentiation of LPS-induced DPCs. The proliferation and adhesion process induced by Biodentine and MTA was via the AKT pathway. However, the cellular differentiation process might not use the same pathway, and this needs to be explored in future studies.


Assuntos
Polpa Dentária , Lipopolissacarídeos , Compostos de Alumínio/farmacologia , Compostos de Cálcio/farmacologia , Combinação de Medicamentos , Lipopolissacarídeos/farmacologia , Óxidos/farmacologia , Silicatos/farmacologia
6.
J Chem Phys ; 152(2): 021102, 2020 Jan 14.
Artigo em Inglês | MEDLINE | ID: mdl-31941321

RESUMO

We explore the feasibility of using machine learning methods to obtain an analytic form of the classical free energy functional for two model fluids, hard rods and Lennard-Jones, in one dimension. The equation learning network proposed by Martius and Lampert [e-print arXiv:1610.02995 (2016)] is suitably modified to construct free energy densities which are functions of a set of weighted densities and which are built from a small number of basis functions with flexible combination rules. This setup considerably enlarges the functional space used in the machine learning optimization as compared to the previous work [S.-C. Lin and M. Oettel, SciPost Phys. 6, 025 (2019)] where the functional is limited to a simple polynomial form. As a result, we find a good approximation for the exact hard rod functional and its direct correlation function. For the Lennard-Jones fluid, we let the network learn (i) the full excess free energy functional and (ii) the excess free energy functional related to interparticle attractions. Both functionals show a good agreement with simulated density profiles for thermodynamic parameters inside and outside the training region.

7.
Tech Coloproctol ; 24(12): 1271-1276, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-32757156

RESUMO

BACKGROUND: Postoperative colorectal anastomotic strictures are quite common. As such, many techniques have been available to address such a problem, one of which is endoscopic dilation. The aim of the present study was to evaluate the long-term outcomes following endoscopic dilation using a multidiameter balloon. METHODS: A retrospective study was conducted on patients with postoperative anastomotic stenosis treated with endoscopic dilation using a multidiameter balloon at our institution, in January 2005-December 2019 were retrospectively reviewed, excluding those with tumor recurrence. Perioperative factors, complications, and recurrence rates were analyzed. RESULTS: There were 40 patients, (22 males and 18 females, mean age 64.6 ± 10.7 years, range 33-84 years). The median follow-up period was 56 months (interquartile range 22.5-99 months). Only 1 complication occurred, micro-perforation due to guided wire injury, which was managed conservatively. Five (12.5%) patients developed restenosis and underwent repeat balloon dilation. None of the five recurrences required more aggressive management, such as redo anastomosis. CONCLUSIONS: Endoscopic multidiameter balloon dilation is a safe and effective method for treating benign colorectal anastomotic strictures.


Assuntos
Neoplasias Colorretais , Complicações Pós-Operatórias , Adulto , Idoso , Idoso de 80 Anos ou mais , Anastomose Cirúrgica/efeitos adversos , Neoplasias Colorretais/cirurgia , Constrição Patológica/etiologia , Constrição Patológica/cirurgia , Dilatação , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/terapia , Estudos Retrospectivos , Resultado do Tratamento
8.
Malays J Pathol ; 41(2): 207-211, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31427558

RESUMO

INTRODUCTION: Salivary gland intraductal carcinoma (IDC) is rare. We present the second case of IDC originating from an intraparotid lymph node (LN) with a more detailed description of the histogenesis, immunohistochemistry (IHC) and updated molecular information. CASE REPORT: An 87-year-old male had a tumour nodule over the left parotid tail for about 20 years. Physical examinations revealed a 4.5 cm soft, non-tender and fixed mass. After the left parotidectomy, pathology confirmed the diagnosis of IDC arising within an intraparotid lymph node. The cystic component of the tumour was lined by single to multilayered ductal cells with micropapillary growth pattern. The solid part showed intraductal proliferation of neoplastic cells in solid, cribriform, micropapillary and Roman bridge-like structure. By immunohistochemistry (IHC), the tumour cells were positive for S-100, CK (AE1/AE3), mammaglobin, SOX10, and estrogen receptor (ER), with myoepithelial cell rimming highlighted by positive p63 and calponin IHC stains. The prognosis of this patient is excellent after complete excision. DISCUSSION: The mechanism of salivary gland tumour arising in the intra-parotid gland LN was assumed to be related to salivary duct inclusion within the intraparotid gland LN which is a normal occurrence during embryology development. Although the terminology may raise some confusion about the relationship between IDC and conventional salivary duct carcinoma (SDA), they are different in immunophenotype and clinicopathologic features. IDC is characterised by S100 (+) ER (+) with predominant intraductal growth and excellent prognosis; while SDC features S100 (-) androgen receptor (+) with predominant invasive growth and aggressive behavior. Recent discovery of recurrent RET gene rearrangement in IDC but not SDC also supports that IDC is not precursor lesion of the SDC.


Assuntos
Carcinoma Ductal/patologia , Linfonodos/patologia , Neoplasias Parotídeas/patologia , Idoso de 80 Anos ou mais , Humanos , Masculino
9.
Osteoporos Int ; 29(6): 1227-1242, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29460102

RESUMO

Fracture liaison services (FLS), implemented in different ways and countries, are reported to be a cost-effective or even a cost-saving secondary fracture prevention strategy. This presumed favorable cost-benefit relationship is encouraging and lends support to expanded implementation of FLS per International Osteoporosis Foundation Best Practice Standards. This study summarizes the economic impact and cost-effectiveness of FLS implemented to reduce subsequent fractures in individuals with osteoporosis. This systematic review identified studies reporting economic outcomes for FLS in osteoporotic patients aged 50 and older through a comprehensive search of MEDLINE, EMBASE, Cochrane Central, and PubMed of studies published January, 2000 to December, 2016. Grey literature (e.g., Google scholar, conference abstracts/posters) were also hand searched through February 2017. Two independent reviewers screened titles and abstracts and conducted full-text review on qualified articles. All disagreements were resolved by discussion between reviewers to reach consensus or by a third reviewer. In total, 23 qualified studies that evaluated the economic aspects of FLS were included: 16 cost-effectiveness studies, 2 cost-benefit analyses, and 5 studies of cost savings. Patient populations varied (prior fragility fracture, non-vertebral fracture, hip fracture, wrist fracture), and FLS strategies ranged from mail-based interventions to comprehensive nurse/physician-coordinated programs. Cost-effectiveness studies were conducted in Canada, Australia, USA, UK, Japan, Taiwan, and Sweden. FLS was cost-effective in comparisons with usual care or no treatment, regardless of the program intensity or the country in which the FLS was implemented (cost/QALY from $3023-$28,800 US dollars (USD) in Japan to $14,513-$112,877 USD in USA. Several studies documented cost savings. FLS, implemented in different ways and countries, are reported to be cost-effective or even cost-saving. This presumed favorable cost-benefit relationship is encouraging and lends support to expanded implementation of FLS per International Osteoporosis Foundation Best Practice Standards.


Assuntos
Fraturas por Osteoporose/prevenção & controle , Prevenção Secundária/economia , Análise Custo-Benefício , Atenção à Saúde/economia , Atenção à Saúde/organização & administração , Custos de Cuidados de Saúde/estatística & dados numéricos , Humanos , Osteoporose/economia , Osteoporose/terapia , Fraturas por Osteoporose/economia , Prevenção Secundária/organização & administração
10.
Acta Psychiatr Scand ; 137(2): 98-108, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29280500

RESUMO

OBJECTIVE: PANSS-8 and PANSS-6 are derived from the 30-item Positive and Negative Syndrome Scale (PANSS-30). We investigate whether PANSS-8 or PANSS-6 is a reliable, valid, sensitive to change measure, and scalable, and whether early improvement using them can predict response/remission. METHOD: Data were from 3 trials for 270 schizophrenia inpatients receiving antipsychotics. Internal consistency, validity, sensitivity to change, and scalability using PANSS-30, PANSS-8, and PANSS-6 at each assessment were examined. Early improvement was defined as at least 20% reduction of PANSS-30, PANSS-8, or PANSS-6 scores at week 2. Response was defined as at least 40% reduction of PANSS-30 and remission as a score of PANSS-8 ≤ 3 on each item at endpoint. Receiver operating characteristic analysis was used to determine which rating scale had better discriminative capacity. RESULTS: PANSS-8 and PANSS-6 showed acceptable internal consistency, were highly correlated with PANSS-30, and had sensitivity to change. PANSS-8 and PANSS-6 were scalable at each assessment, except for PANSS-6 at baseline. Early improvement using PANSS-8 or PANSS-6 had comparable predictive values with that of PANSS-30 for response/remission. CONCLUSION: PANSS-8 and PANSS-6 are clinically useful measures. Early improvement, regardless of whether PANSS-30, PANSS-8, or PANSS-6 is used, is a statistically significant predictor of response/remission.


Assuntos
Antipsicóticos/farmacologia , Avaliação de Resultados em Cuidados de Saúde/normas , Escalas de Graduação Psiquiátrica/normas , Esquizofrenia/diagnóstico , Esquizofrenia/tratamento farmacológico , Doença Aguda , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Indução de Remissão , Índice de Gravidade de Doença
11.
Clin Radiol ; 70(5): e28-34, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25735675

RESUMO

AIM: To report on the MRI compatibility of the Ex-PRESS glaucoma filtration device, a tiny metallic implant placed into the anterior chamber of the eye that is much smaller than traditional glaucoma shunts, and to educate the radiology community regarding its appearance. MATERIALS AND METHODS: Seven patients with Ex-PRESS glaucoma filtration devices were identified that had undergone MRI at San Francisco General Hospital/University of California San Francisco Medical Center by searching and cross-referencing the radiology reporting system and the electronic medical record. MRI images were reviewed for artefact interfering with interpretation. Ophthalmology examinations were reviewed for evidence of complications. RESULTS: Eighteen individual MRI examinations were performed during 12 unique MRI events on these 7 patients. 13/18 individual MRI examinations and 7/12 MRI events were performed at 3 T with the others performed at 1.5 T. Mean time from Ex-PRESS implantation to MRI was 17.5 months. Mean time from MRI to first ophthalmology examination was 1.1 months and from MRI to latest ophthalmology examination was 6.6 months. Susceptibility artefact did not interfere with image interpretation and no complications related to MRI were encountered. CONCLUSION: The Ex-PRESS glaucoma filtration device appears to be safe for MRI at 1.5 and 3 T and does not produce significant susceptibility artefact to affect diagnostic interpretation adversely.


Assuntos
Corpos Estranhos , Implantes para Drenagem de Glaucoma , Imageamento por Ressonância Magnética , Idoso , Idoso de 80 Anos ou mais , Segurança de Equipamentos , Feminino , Humanos , Masculino , Metais , Pessoa de Meia-Idade , Estudos Prospectivos
12.
Curr Oncol ; 22(6): 385-91, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26715870

RESUMO

BACKGROUND: Patient function is a key part of the clinical decision to offer chemotherapy and has, in earlier studies, been associated with chemotherapy toxicity. Objective testing might be more accurate than patient-reported or physician-assessed physical function, and thus might be a stronger predictor of chemotherapy toxicity in older adults. METHODS: Patients, 70 years of age and older, with thoracic or colorectal cancer were recruited. Three physical tests were performed before commencement of a new line of chemotherapy: grip strength, 4-m walk test, and the Timed Up and Go (tug). Our pilot study explored the association between those tests and chemotherapy toxicity. RESULTS: The 24 patients recruited had a median age of 74.5 years (range: 70-84 years), and 54.2% had an Eastern Cooperative Oncology Group performance status of 0 or 1. Median score on the Charlson comorbidity index was 1 (range: 0-4). Almost two thirds had metastatic disease, 70% were chemonaïve, and 83.3% were about to receive polychemotherapy. Patients had a mean tug of 13.2 ± 5.7 s and a mean gait speed of 0.74 ± 0.24 m/s; 50% had a grip strength test in the lowest 20th percentile. Grades 3-5 chemotherapy toxicities occurred in 34.7% of the patients; two thirds required a dose reduction or delay; and one third discontinued chemotherapy because of toxicity. Hospitalization attributable to chemotherapy was uncommon (12.5%). A trend toward increased severe chemotherapy toxicity with slower gait speed was observed (p = 0.049). CONCLUSIONS: Abnormalities in objective markers of physical function are common in older adults with cancer, even in those deemed fit for chemotherapy. However, those abnormalities were not associated with an increased likelihood of chemotherapy toxicity in the population included in this small pilot study.

13.
Eur J Neurol ; 21(9): 1184-91, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24780071

RESUMO

BACKGROUND AND PURPOSE: Our aim was to investigate the influence of admission dehydration on the discharge outcome in acute ischaemic and hemorrhagic stroke. METHODS: Between January 2009 and December 2011, 4311 ischaemic and 1371 hemorrhagic stroke patients from the stroke registry of Chang Gung healthcare system were analyzed. The eligible patients were identified according to inclusion/exclusion criteria. In total, 2570 acute ischaemic and 573 acute hemorrhagic stroke patients were finally recruited. According to the blood urea nitrogen (BUN) to creatinine (Cr) ratio (BUN/Cr), these patients were divided into dehydrated (BUN/Cr ≥ 15) and non-dehydrated (BUN/Cr < 15) groups. Demographics, admission costs and discharge outcomes including modified Rankin scale (mRS) and Barthel index (BI) were examined. Data were analyzed using multivariate analysis of two-stage least squares including logistic and linear regression. RESULTS: Acute ischaemic stroke with admission dehydration had higher infection rates (P = 0.006), worse discharge BI (62.8 ± 37.4 vs. 73.4 ± 32.4, P < 0.001, adjusted P < 0.001), worse mRS (2.7 ± 1.6 vs. 2.3 ± 1.5, P < 0.001, adjusted P = 0.009) and higher admission costs (2470.8 ± 3160.8 vs. 1901.2 ± 2046.8 US dollars, P < 0.001, adjusted P = 0.013) than those without dehydration. However, acute hemorrhagic stroke with or without admission dehydration showd no difference in admission costs (P = 0.618) and discharge outcomes (BI, P = 0.058; mRS, P = 0.058). CONCLUSION: Admission dehydration is associated with worse discharge outcomes and higher admission costs in acute ischaemic stroke but not in hemorrhagic stroke.


Assuntos
Isquemia Encefálica/complicações , Desidratação , Hospitalização/economia , Admissão do Paciente/economia , Acidente Vascular Cerebral/etiologia , Idoso , Idoso de 80 Anos ou mais , Custos e Análise de Custo , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Alta do Paciente , Valor Preditivo dos Testes , Sistema de Registros , Estudos Retrospectivos , Índice de Gravidade de Doença , Estatísticas não Paramétricas , Resultado do Tratamento
14.
Genet Mol Res ; 13(4): 8568-76, 2014 Feb 13.
Artigo em Inglês | MEDLINE | ID: mdl-24615099

RESUMO

The aim of this study was to investigate the specific molecular mechanism of the transforming growth factor ß (TGF-ß)-induced epithelial-mesenchymal transition in a lung cancer cell line, and to provide new ideas for targeting therapy of lung cancer. A549 cells were treated with different concentrations of TGF-ß and 5-aza-deoxycytidine (5-aza-dC). The morphological changes after the intervention were observed. The change in the expression of the epithelial marker E-cadherin (E-cad) was detected by Western blot. The proliferation of A549 cells was measured using the MTT assay. Cell movement and invasion capacity was evaluated with the cell scratch test and invasion test. TGF-ß induced A549 cells to transform to a mesenchymal cell morphology and downregulated the expression of E-cad, and 5-aza-dC inhibited this phenomenon. Compared with the control group, the number of transmembrane cells was higher and cell migration was markedly increased in the experimental group with continued culture in the presence of 10 ng/mL TGF-ß, showing significant differences (P < 0.05). CDH1 gene methylation is involved in TGF-ß-induced epithelial-mesenchymal transition in the alveolar epithelial cell line A549.


Assuntos
Caderinas/genética , Metilação de DNA , Transição Epitelial-Mesenquimal , Antígenos CD , Caderinas/metabolismo , Linhagem Celular Tumoral , Movimento Celular , Proliferação de Células , Células Epiteliais/efeitos dos fármacos , Células Epiteliais/metabolismo , Células Epiteliais/fisiologia , Humanos , Fator de Crescimento Transformador beta/farmacologia
15.
Oral Dis ; 19(6): 611-9, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23231387

RESUMO

BACKGROUND: MicroRNAs play important roles in carcinogenesis. A preliminary screening study suggested that down-regulation of miR-370 occurs in oral squamous cell carcinoma (OSCC) tissue. Insulin receptor substratre-1 (IRS-1) is the substrate of insulin-like growth factor receptor (IGFR), which modulates AKT/mTOR activation in malignancies. The relationship between miR-370 and IRS-1, and their functional roles in OSCC pathogenesis are unclear. MATERIALS AND METHODS: Primary OSCC specimens were examined for miR-370 expression. Exogenous expression of miR-370 was established using both stable subclones and transient expression, and these were used to gain insights into miR-370's functions in OSCC cells. Knockdown of miR-370 and IRS-1 was also carried out in OSCC cells using a small interference oligonucleotide approach. RESULTS: Squamous cell carcinoma tissues with perineural invasion had lowered miR-370 expression compared with contrasting OSCC. OSCC cells also exhibited lower miR-370 expression than normal oral keratinocytes, and this can be reversed by treatment with 5-aza-2'-deoxycytidine. Exogenous miR-370 expression decreases the migration and anchorage-independent growth of OSCC cells, which implies a suppressor role for miR-370. The enhancement of anchorage-independent growth of OSCC cells through miR-370 inhibiting can be reduced by knockdown of IRS-1 expression. CONCLUSION: This study concludes that miR-370 is able to target IRS-1 for oral tumorigenesis.


Assuntos
Carcinoma de Células Escamosas/patologia , Proteínas Substratos do Receptor de Insulina/fisiologia , MicroRNAs/fisiologia , Neoplasias Bucais/patologia , Azacitidina/análogos & derivados , Azacitidina/farmacologia , Carcinogênese/patologia , Adesão Celular/genética , Técnicas de Cultura de Células , Linhagem Celular Tumoral , Movimento Celular/genética , Células Cultivadas , Metilases de Modificação do DNA/antagonistas & inibidores , Decitabina , Regulação para Baixo , Regulação Neoplásica da Expressão Gênica/genética , Técnicas de Silenciamento de Genes , Humanos , Proteínas Substratos do Receptor de Insulina/genética , Queratinócitos/efeitos dos fármacos , Queratinócitos/patologia , MicroRNAs/análise , MicroRNAs/genética , Invasividade Neoplásica , Estadiamento de Neoplasias , Proteína Oncogênica v-akt/fisiologia , RNA Interferente Pequeno/genética , Serina-Treonina Quinases TOR/fisiologia
16.
Clin Psychol Rev ; 105: 102339, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-37793269

RESUMO

There is a large evidence base supporting an important role of parenting behavior in influencing youth mental health; however, this literature often fails to capture the potentially unique and interactive role of mothers and fathers. This systematic review and meta-analysis aimed to investigate the role of maternal and paternal parenting behaviors in relation to child and adolescent internalizing problems. Following PRISMA (2020) guidelines, 88 studies were identified. Of these, 47 studies and upward of 65 parent-behavior and child-outcome combinations were examined. Findings indicated a unique role of maternal overprotection in the prediction of child anxiety symptoms. For other parenting behaviors, largely similar associations were found for maternal and paternal parenting behaviors with child and adolescent anxiety, depressive symptoms and broader internalizing problems. There was preliminary support for the interaction of maternal and paternal parenting being important in predicting youth symptoms. Although findings did not strongly substantiate differences in the effects of maternal and paternal parenting practices, with only one significant difference identified, further research would benefit from stronger representation of fathers, to enable a more rigorous and comprehensive understanding of each parent's role, and their interactive influence on internalizing outcomes of their children.


Assuntos
Pai , Poder Familiar , Masculino , Feminino , Humanos , Adolescente , Poder Familiar/psicologia , Pai/psicologia , Mães/psicologia , Ansiedade , Transtornos de Ansiedade/psicologia
17.
Int J Clin Pract ; 66(8): 774-781, 2012 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-22650364

RESUMO

Background and Aims: Patients suffering from peptic ulcer (PU) bleeding who have end-stage renal disease (ESRD) may encounter more adverse outcomes. The primary objective is to investigate the risk factors that influence the outcomes of ESRD and chronic kidney disease (CKD) patients with PU bleeding after successful initial endoscopic haemostasis. Methods: A total of 540 patients with PU bleeding after initial endoscopic haemostasis in a tertiary hospital were investigated retrospectively. They were sorted into three groups after randomised age-matched adjustment: ESRD group (n = 90), CKD group (n = 90) and control group (n = 360). Main outcome measurements were rebleeding, requirement for blood transfusion and surgery, length of hospital stay and mortality. Results: The rebleeding rates were 43% for the ESRD group vs. 21% for the CKD group vs. 12% for the control group (overall p = < 0.001). Multivariate analysis showed the predictors of rebleeding were ESRD, time to endoscope, and non-high-dose proton-pump inhibitors (PPI) users. The risk factors for bleeding-related mortality were presence of moderate degree of CKD and ESRD group, time to endoscope, and Rockall score. All-cause mortality was related to presence of moderate degree of CKD and ESRD group, platelet count, time to endoscope, Rockall score and length of hospital stay. Conclusions: ESRD patients who suffered from PU bleeding were at risk of excessive rebleeding and mortality with frequent occurrence of delayed rebleeding. This study suggests that early endoscopy for initial haemostasis and high-dose intravenous PPI are associated with the reduction of rebleeding risk especially in patients with high Rockall scores.

18.
Sci Rep ; 12(1): 4055, 2022 03 08.
Artigo em Inglês | MEDLINE | ID: mdl-35260577

RESUMO

The cultural use of pigments in human societies is associated with ritual activities and the creation of social memory. Neolithic Çatalhöyük (Turkey, 7100-5950 cal BC) provides a unique case study for the exploration of links between pigments in burials, demographic data and colourants in contemporary architectural contexts. This study presents the first combined analysis of funerary and architectural evidence of pigment use in Neolithic Anatolia and discusses the possible social processes underlying the observed statistical patterns. Results reveal that pigments were either applied directly to the deceased or included in the grave as a burial association. The most commonly used pigment was red ochre. Cinnabar was mainly applied to males and blue/green pigment was associated with females. A correlation was found between the number of buried individuals and the number of painted layers in the buildings. Mortuary practices seem to have followed specific selection processes independent of sex and age-at-death of the deceased. This study offers new insights about the social factors involved in pigment use in this community, and contributes to the interpretation of funerary practices in Neolithic Anatolia. Specifically, it suggests that visual expression, ritual performance and symbolic associations were elements of shared long-term socio-cultural practices.


Assuntos
Sepultamento , Práticas Mortuárias , Arqueologia , Comportamento Ritualístico , Feminino , História Antiga , Humanos , Masculino , Pintura , Turquia
19.
Oral Dis ; 17(1): 53-9, 2011 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-20646234

RESUMO

BACKGROUNDS: The chromosome 3q26 locus is a hotspot region carrying oncogenes that frequently altered in neoplasms. ZASC1 is a zinc finger protein transcription factor localized on 3q26. Our previous study showed the frequent amplification of 3q26, including the ZASC1 gene, in oral squamous cell carcinoma (OSCC). This study investigated the copy number changes of ZASC1 gene from primary to recurrent OSCC and the functions of ZASC1 in OSCC cells. MATERIALS AND METHODS: A total of 27 OSCC patients with primary and recurrent tumors were examined for ZASC1 and TERC copy number changes using Quantitative PCR analysis. Exogenous expression and knockdown of ZASC1 were carried out to specify the oncogenic potential of ZASC1 in OSCC cells. RESULTS: A ZASC1 copy number that has increased from primary to recurrent tumor counterparts in tissue pairs suggested the importance of ZASC1 in tumor progression. The increase of ZASC1 gene copy number in recurrent tumors was associated with the consumption of betel quid in patients. OSCC cells expressing ZASC1-FLAG fusion protein showed increased proliferation. After the knockdown of endogenous ZASC1 expression using small interference RNA, the growth and colony formation of SAS OSCC cells decreased. CONCLUSIONS: The findings support the hypothesis that ZASC1 localized on 3q26 contributes to the recurrence of OSCC.


Assuntos
Carcinoma de Células Escamosas/genética , Proteínas de Transporte/genética , Amplificação de Genes/genética , Dosagem de Genes/genética , Neoplasias Bucais/genética , Recidiva Local de Neoplasia/genética , Proteínas Nucleares/genética , Areca/efeitos adversos , Carcinoma de Células Escamosas/patologia , Proteínas de Ligação a DNA , Amplificação de Genes/efeitos dos fármacos , Dosagem de Genes/efeitos dos fármacos , Humanos , Análise por Pareamento , Pessoa de Meia-Idade , Neoplasias Bucais/patologia , RNA/genética , Telomerase/genética
20.
Benef Microbes ; 12(3): 283-293, 2021 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-34030609

RESUMO

Escherichia coli Nissle (EcN), a probiotic bacterium protects against several disorders. Multiple reports have studied the pathways involved in cardiac hypertrophy. However, the effects of probiotic EcN against diabetes-induced cardiac hypertrophy remain to be understood. We administered five weeks old Wistar male (271±19.4 g body weight) streptozotocin-induced diabetic rats with 109 cfu of EcN via oral gavage every day for 24 days followed by subjecting the rats to echocardiography to analyse the cardiac parameters. Overexpressed interleukin (IL)-6 induced the MEK5/ERK5, JAK2/STAT3, and MAPK signalling cascades in streptozotocin-induced diabetic rats. Further, the upregulation of calcineurin, NFATc3, and p-GATA4 led to the elevation of hypertrophy markers, such as atrial and B-type natriuretic peptides. In contrast, diabetic rats supplemented with probiotic EcN exhibited significant downregulated IL-6. Moreover, the MEK5/ERK5 and JAK2/STAT3 cascades involved during eccentric hypertrophy and MAPK signalling, including phosphorylated MEK, ERK, JNK, and p-38, were significantly attenuated in diabetic rats after supplementation of EcN. Western blotting and immunofluorescence revealed the significant downregulation of NFATc3 and downstream mediators, thereby resulting in the impairment of cardiac hypertrophy. Taken together, the findings demonstrate that supplementing probiotic EcN has the potential to show cardioprotective effects by inhibiting diabetes-induced cardiomyopathies.


Assuntos
Cardiomegalia/terapia , Diabetes Mellitus Experimental/terapia , Cardiomiopatias Diabéticas/terapia , Escherichia coli/fisiologia , Interleucina-6/antagonistas & inibidores , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , Probióticos/uso terapêutico , Animais , Calcineurina/metabolismo , Cardiomegalia/metabolismo , Cardiomegalia/fisiopatologia , Diabetes Mellitus Experimental/metabolismo , Diabetes Mellitus Experimental/fisiopatologia , Cardiomiopatias Diabéticas/metabolismo , Cardiomiopatias Diabéticas/fisiopatologia , Ventrículos do Coração/efeitos dos fármacos , Ventrículos do Coração/metabolismo , Ventrículos do Coração/fisiopatologia , Interleucina-6/metabolismo , Janus Quinase 2/metabolismo , MAP Quinase Quinase 5/metabolismo , Masculino , Proteína Quinase 7 Ativada por Mitógeno/metabolismo , Ratos , Ratos Wistar , Fator de Transcrição STAT3/metabolismo , Estreptozocina
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