Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 80
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
País de afiliação
Intervalo de ano de publicação
1.
J Nutr ; 154(1): 79-86, 2024 01.
Artigo em Inglês | MEDLINE | ID: mdl-37951389

RESUMO

BACKGROUND: Numerous research works have investigated the association between tea consumption and the risk of acute cerebrovascular events; however, the results are inconsistent. OBJECTIVES: We used Mendelian randomization (MR) to evaluate the causal association between tea intake and several acute cerebrovascular events, including any ischemic stroke, large atherosclerotic stroke (LAS), cardiogenic embolic stroke (CES), small vessel stroke (SVS), intracranial hemorrhage (ICH), and subarachnoid hemorrhage (SAH). METHODS: We obtained summary genome-wide association study (GWAS) data on tea intake and acute cerebrovascular events in populations of European ancestry. The GWAS on tea intake is derived from the UK Biobank, where we have chosen single-nucleotide polymorphisms (SNPs) closely associated with it as instrumental variables. We also obtained summary data on ischemic stroke from a GWAS meta-analysis, as well as summary data on ICH and SAH from the FinnGen study. We first explored the causal association between tea intake and several acute cerebrovascular events using univariate Mendelian randomization (UVMR), and then further assessed the causal association between tea intake and SVS using multivariate Mendelian randomization (MVMR) corrected for multiple confounders. RESULTS: In UVMR, genetically predicted increases in tea intake were linked to a lower risk of SVS (OR: 0.58; 95% CI: 0.39, 0.86). There was no causal association between tea intake and the risk of other acute cerebrovascular events. In the MVMR, our results show that there was still a significant causal association between drinking tea and SVS, after adjusting body mass index, total cholesterol, low-density lipoprotein cholesterol, diabetes, hypertension, smoking, and alcohol consumption. CONCLUSION: This MR study provides new genetic evidence that increased tea intake reduces the risk of SVS in the European population. However, possibly because of limited statistical power, the study did not find that tea consumption reduced the risk of several other acute cerebrovascular events.


Assuntos
AVC Isquêmico , Acidente Vascular Cerebral , Humanos , Estudo de Associação Genômica Ampla , Acidente Vascular Cerebral/genética , LDL-Colesterol , Polimorfismo de Nucleotídeo Único , Chá , Análise da Randomização Mendeliana , Ensaios Clínicos Controlados Aleatórios como Assunto
2.
Mol Pharm ; 21(2): 581-595, 2024 Feb 05.
Artigo em Inglês | MEDLINE | ID: mdl-38131328

RESUMO

Currently, there is an inherent contradiction between the multifunctionality and excellent biocompatibility of anticancer drug nanocarriers, which limits their application. Therefore, to overcome this limitation, we aimed to develop a biocompatible drug delivery system for the treatment of hepatocellular carcinoma (HCC). In this study, we employed poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) as the fundamental framework of the nanocarrier and utilized the emulsion solvent evaporation method to fabricate nanoparticles loaded with paclitaxel (PTX), known as PTX-PHBV NPs. To enhance the tumor-targeting capability, a dopamine self-polymerization strategy was employed to form a pH-sensitive coating on the surface of the nanoparticles. Then, folic acid (FA)-targeting HCC was conjugated to the nanoparticles with a polydopamine (PDA) coating by using the Michael addition reaction, resulting in the formation of HCC-targeted nanoparticles (PTX-PHBV@PDA-FA NPs). The PTX-PHBV@PDA-FA NPs were characterized and analyzed by using dynamic light scattering, scanning electron microscopy, fourier-transform infrared spectroscopy, X-ray diffraction, differential scanning calorimetry, and thermogravimetric analysis. Encouragingly, PTX-PHBV@PDA-FA NPs exhibited remarkable anticancer efficacy in an HCC xenograft mouse model. Furthermore, compared to raw PTX, PTX-PHBV@PDA-FA NPs showed less toxicity in vivo. In conclusion, these results demonstrate the potential of PTX-PHBV@PDA-FA NPs for HCC treatment and biocompatibility.


Assuntos
Carcinoma Hepatocelular , Indóis , Neoplasias Hepáticas , Nanopartículas , Poli-Hidroxibutiratos , Polímeros , Humanos , Animais , Camundongos , Paclitaxel/uso terapêutico , Paclitaxel/química , Carcinoma Hepatocelular/tratamento farmacológico , Ácido Fólico/química , Neoplasias Hepáticas/tratamento farmacológico , Sistemas de Liberação de Medicamentos/métodos , Poliésteres/química , Nanopartículas/química , Concentração de Íons de Hidrogênio , Linhagem Celular Tumoral , Portadores de Fármacos/química
3.
Nutr Neurosci ; : 1-6, 2024 Feb 12.
Artigo em Inglês | MEDLINE | ID: mdl-38347678

RESUMO

BACKGROUND: Alzheimer's disease (AD) is a degenerative disease of the nervous system. Observational studies have found an association between plant food intake and AD. However, it is unclear whether this association is influenced by confounding factors. We aimed to explore the causal relationship between plant-based diet and the risk of AD using two-sample Mendelian randomization. MATERIALS AND METHODS: We obtained datasets of exposure from the IEU Open GWAS project, including dried fruit intake, fresh fruit intake, raw vegetable intake, cooked vegetable intake, and cereal intake. The summary data for AD were obtained from a large GWAS meta-analysis containing 71,880 cases and 383,378 controls. RESULTS: Increased intake of dried fruits was associated with a reduced risk of AD (IVW: OR = 0.88, 95CI = 0.82-0.95). No causal association was found between the intake of other foods and AD. CONCLUSION: This MR study suggests that genetically predicted increased intake of dried fruits is a causal protective factor for AD.

4.
Eur Spine J ; 33(2): 496-504, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37934267

RESUMO

PURPOSE: Previous epidemiological and other studies have shown an association between diet and low back pain (LBP). This study aimed to investigate the causal relationship between diet and LBP using a Mendelian randomization (MR) approach. METHODS: The three main methods in this study were weighted median, MR-Egger, and inverse variance weighting (IVW). We utilized MR-PRESSO to eliminate abnormal SNPs. Additionally, tests for pleiotropy and heterogeneity were conducted. Utilizing IVW and MR-Egger's Cochran's Q test, heterogeneity was evaluated. MR-Egger intercepts were used in pleiotropy tests. A leave-one-out analysis was also used to evaluate the stability of the study's findings. RESULTS: The frequency of alcohol intake was associated with an increased risk of LBP. Increased processed meat intake, dried fruit intake, cereal intake, and tea intake were causally associated with a decreased risk of LBP (alcohol intake frequency: odds ratio (OR) = 1.28; 95% confidence interval (CI), 1.11-1.47; P = 0.0006; processed meat intake: OR = 0.60, 95%CI 0.39-0.92, P = 0.019; dried fruit intake: OR = 0.43, 95%CI 0.29-0.66, P = 0.00008; cereal intake: OR = 0.62, 95%CI 0.42-0.92, P = 0.018; tea intake: OR = 0.75, 95%CI 0.58-0.97, P = 0.029). Heterogeneity and pleiotropy were also not found in the sensitivity analysis. The leave-one-out analysis also showed more robust results. Other dietary intakes were not causally associated with LBP. CONCLUSIONS: This two-sample MR study found that frequency of alcohol intake was associated with an increased risk of LBP, and intake of processed meat, dried fruit, cereals, and tea was associated with a decreased risk of LBP. Moreover, no causal relationship was found with LBP in the other 13 diets.


Assuntos
Dor Lombar , Análise da Randomização Mendeliana , Humanos , Dor Lombar/etiologia , Dor Lombar/genética , Dieta/efeitos adversos , Nonoxinol , Chá
5.
J Stroke Cerebrovasc Dis ; 33(7): 107737, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38688395

RESUMO

BACKGROUND: The association between hypothyroidism and stroke remains controversial and the association between hypothyroidism and stroke subtypes has not been satisfactorily researched. This study aimed to explore the causal effect of hypothyroidism on the risk of stroke and its subtypes by Mendelian randomization (MR) analysis. METHODS: Single nucleotide polymorphisms (SNPs) were selected from published genome-wide association studies (GWAS) meta-analysis as instrumental variables (IVs) for hypothyroidism. As outcomes, summary GWAS data for stroke and its subtypes were obtained from two other large GWAS meta-analyses, including any stroke (AS), any ischemic stroke (AIS), large vessel stroke (LAS), cardiogenic embolic stroke (CES), small vessel stroke (SVS), and intracranial hemorrhage (ICH). Univariate Mendelian randomization (UVMR) and multivariate Mendelian randomization (MVMR) were used to assess the causal effect of hypothyroidism on stroke and its subtypes. RESULTS: In UVMR, genetically predicted hypothyroidism was significantly associated with LAS (OR = 1.14, 95CI = 1.02-1.27) and SVS (OR = 1.14, 95CI = 1.04-1.25), but not with AS, AIS, CES, and ICH. The results of the MVMR showed that after adjusting for smoking, alcohol consumption, hypertension, diabetes, low-density lipoprotein cholesterol (LDL-c), and body mass index (BMI), the causal association between hypothyroidism and SVS remained significant, while the association between hypothyroidism and LAS became nonsignificant. CONCLUSION: Hypothyroidism is causally associated with risk for LAS and SVS, but not for other stroke subtypes. Hypothyroidism may be an independent risk factor for SVS, and vascular risk factors play an important role in hypothyroidism causing LAS.


Assuntos
Predisposição Genética para Doença , Estudo de Associação Genômica Ampla , Hipotireoidismo , Análise da Randomização Mendeliana , Polimorfismo de Nucleotídeo Único , Acidente Vascular Cerebral , Humanos , Hipotireoidismo/genética , Hipotireoidismo/epidemiologia , Hipotireoidismo/diagnóstico , Fatores de Risco , Acidente Vascular Cerebral/genética , Acidente Vascular Cerebral/diagnóstico , Acidente Vascular Cerebral/epidemiologia , Medição de Risco , Fenótipo , AVC Isquêmico/genética , AVC Isquêmico/diagnóstico , AVC Isquêmico/epidemiologia , Feminino , AVC Embólico/genética , AVC Embólico/etiologia , AVC Embólico/diagnóstico , AVC Embólico/epidemiologia , Masculino
6.
Mol Carcinog ; 62(12): 1860-1876, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37589417

RESUMO

Hypoxia is characteristic of the ovarian tumor (OC) microenvironment and profoundly affects tumorigenesis and therapeutic response. Long noncoding RNAs (lncRNAs) play various roles in tumor progression; however, the characteristics of lncRNAs in pathological responses of the OC microenvironment are not entirely understood. Through high-throughput sequencing, lncRNA expression in hypoxia (1% O2 ) and normoxia (21% O2 ) SKOV3 cells was explored and analyzed. The 5'- and 3'-rapid amplification of complementary DNA ends was used to detect the full length of the novel HIF1A-AS3 transcript. Real-time quantitative polymerase chain reaction was used to assess HIF1A-AS3 expression in OC cells and tissues. In vitro and in vivo evaluations of the biological functions of hypoxic HIF1A-AS3 were conducted. To clarify the underlying mechanisms of HIF1A-AS3 in hypoxic OC, a dual-luciferase assay, chromatin immunoprecipitation, RNA pull-down, RNA immunoprecipitation, and RNA-sequencing were used. We used high-throughput sequencing to investigate a novel lncRNA, HIF1A-AS3, as a hypoxic candidate significantly elevated in OC cells/tissues. HIF1A-AS3 was predominantly localized in the nucleus and promoted in vitro and in vivo OC growth and tumorigenesis. Hypoxia-inducible factor 1α bound to hypoxia response elements in the HIF1A-AS3 promoter region and stimulated its expression in hypoxia. Under hypoxia, HIF1A-AS3 directly integrated with Y-Box binding protein 1 and inhibited its ability to bind to the promoters of p21 and AJAP1 to repress their transcriptional activity, thereby promoting hypoxic OC progression. Our results revealed the crucial role and mechanism of the novel hypoxic HIF1A-AS3 in the oncogenesis of OC. The novel HIF1A-AS3 could be a crucial biomarker and therapeutic target for future OC treatments.


Assuntos
Neoplasias Ovarianas , RNA Longo não Codificante , Humanos , Feminino , RNA Longo não Codificante/genética , RNA Longo não Codificante/metabolismo , Transformação Celular Neoplásica/genética , Carcinogênese/genética , Hipóxia/genética , Neoplasias Ovarianas/genética , Linhagem Celular Tumoral , Proliferação de Células/genética , Regulação Neoplásica da Expressão Gênica , Microambiente Tumoral , Proteína 1 de Ligação a Y-Box/metabolismo , Moléculas de Adesão Celular/metabolismo , Subunidade alfa do Fator 1 Induzível por Hipóxia/genética , Subunidade alfa do Fator 1 Induzível por Hipóxia/metabolismo
7.
Pediatr Surg Int ; 39(1): 250, 2023 Aug 18.
Artigo em Inglês | MEDLINE | ID: mdl-37594554

RESUMO

PURPOSE: This study aimed to evaluate the clinical utility of fecal calprotectin (FC) levels during the necrotizing enterocolitis (NEC) episode to predict the onset of post-NEC intestinal stricture. METHODS: The medical records of patients with NEC treated from April 2020 to April 2022 were recorded for this study. FC was quantified at the acute phase of NEC. FC levels were compared in patients with or without intestinal stricture. Receiver operating characteristics (ROC) analysis was constructed to determine optimal cut-offs of FC for post-NEC intestinal stricture. RESULTS: A total of 50 infants with NEC were enrolled in this study and 14 (28%) of them eventually developed intestinal stricture. All children with intestinal stricture underwent one-stage surgery and all made it through the follow-up period alive. The median FC level was 1237.55 (741.25, 1378.80) ug/g in patients with intestinal stricture and it was significantly higher than that in the non-stricture group [158.30 (76.23, 349.13) ug/g, P < 0.001]. FC had good diagnostic accuracy for predicting intestinal stricture, according to ROC curve analysis, with an AUC area of 0.911. At an optimal cut-off value of 664.2 ug/g, sensitivity and specificity were 85.71% and 91.67%, respectively. CONCLUSION: As a non-invasive parameter, FC has excellent efficacy and accuracy in predicting post-NEC intestinal stricture. Increased FC levels at the acute phase of NEC were associated with the development of intestinal stricture.


Assuntos
Enterocolite Necrosante , Doenças Fetais , Doenças do Recém-Nascido , Obstrução Intestinal , Criança , Lactente , Feminino , Humanos , Recém-Nascido , Enterocolite Necrosante/complicações , Enterocolite Necrosante/diagnóstico , Enterocolite Necrosante/cirurgia , Constrição Patológica , Fezes , Complexo Antígeno L1 Leucocitário
8.
Neurol Sci ; 43(2): 1067-1070, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34089111

RESUMO

OBJECTIVE: There is little evidence to support a correlation between abdominal surgery and acute cerebellar ataxia (ACA). We reviewed the records of children with ACA treated at our institution to analyze risk factors for ACA. METHODS: Clinical data of 442 children with ACA treated at Children's Hospital of Nanjing Medical University between November 2015 and June 2019 were retrospectively analyzed. Univariate and multivariate analyses were performed to determine risk factors for the occurrence and recurrence of ACA. RESULTS: In total, 442 children with ACA were included in this study. Multivariate logistic regression analysis showed age (p = 0.009), infection (p < 0.001), vaccination (p < 0.001), head trauma (p < 0.001), intussusception surgery (IS) (p < 0.001), operation for indirect inguinal hernia (p < 0.001), and operation for congenital gastrointestinal malformation (p < 0.001) were independent risk factors for ACA occurrence. Univariate analysis showed that only IS (p < 0.001) was associated with ACA recurrence. CONCLUSIONS: Surgeons should be aware that age, infection, vaccination, head trauma, and history of abdominal surgery are associated with ACA, while IS is a risk factor for ACA recurrence.


Assuntos
Ataxia Cerebelar , Traumatismos Craniocerebrais , Doença Aguda , Ataxia Cerebelar/epidemiologia , Criança , Humanos , Recidiva , Estudos Retrospectivos , Fatores de Risco
9.
J Asian Nat Prod Res ; 24(7): 634-640, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34581212

RESUMO

Three new mexicanolide limonoids were obtained from the 90% ethanol extract of the seeds of Khaya senegalensis. Their structures were elucidated as senegalenines A-C (1-3) by analysing their 1D/2D NMR and MS spectroscopic analysis. In addition, the isolated limonoids were tested in vitro for antimicrobial potentials against 5 pathogenic microorganisms. Consequently, compounds 1-3 exhibited antimicrobial activity against the tested Gram negative bacteria at the minimum inhibitory concentration values less than 40 µg/ml.


Assuntos
Limoninas , Meliaceae , Antibacterianos/farmacologia , Limoninas/química , Meliaceae/química , Estrutura Molecular , Sementes/química
10.
J Cell Physiol ; 235(11): 8768-8778, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32633026

RESUMO

Mutation in the tumor suppressor gene p53 is the most frequent molecular defect in endometrial carcinoma (EC). Recently, CP-31398, a p53-stabilizing compound, has been indicated to possess the ability to alter the expression of non-p53 target genes in addition to p53 downstream genes in tumor cells. Herein, we explore the alternative mechanisms underlying the restoration of EC tumor suppressor function in mutant p53 by CP-31398. A p53-mutated EC cell was constructed in AN3CA cells with restored or partial loss of Slug using lentiviral vectors, followed by treatment with 25 µM CP-31398. A p53-independent mechanism of CP-31398 was confirmed by the interaction between mouse double minute 2 homolog (MDM2) and Slug AN3CA cells treated with IWR-1 (inhibitor of Wnt response 1). Furthermore, the AN3CA cells were treated with short hairpin RNA against Slug, Wnt-specific activators (LiCl) or inhibitors (XAV-939) followed by CP-31398 treatment. Moreover, AN3CA cell proliferation and apoptosis were examined. A tumorigenicity assay was conducted in nude mice. CP-31398 could promote the apoptosis of p53-mutated EC cells, while Slug reversed this effect. Slug ubiquitination was found to occur via binding of Slug to MDM2 in AN3CA cells. We found that CP-31398 increased the GSK-3ß, p-Slug, Puma, Wtp53, and Bax expressions whereas Wnt, Mtp-53, Slug, Bcl-2, and Ki-67 expressions were decreased. However, these findings were reversed following the activation of the Wnt pathway and overexpression of Slug. Finally, the in vivo experimental evidence confirmed that CP-31398 with depleted Slug suppressed tumor growth by downregulating the Slug. Collectively, CP-31398-regulated Slug downregulation represses the p53-mutated EC via the p53/Wnt/Puma pathway.


Assuntos
Apoptose/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Neoplasias do Endométrio/tratamento farmacológico , Pirimidinas/farmacologia , Proteína Supressora de Tumor p53/metabolismo , Animais , Linhagem Celular Tumoral , Neoplasias do Endométrio/metabolismo , Feminino , Humanos , Camundongos Nus , Proteínas Proto-Oncogênicas c-mdm2/efeitos dos fármacos , Proteínas Proto-Oncogênicas c-mdm2/metabolismo , Proteína Supressora de Tumor p53/genética
11.
Diabetes Obes Metab ; 22(12): 2375-2383, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-32744358

RESUMO

AIM: To assess the efficacy and safety of polyethylene glycol loxenatide (PEX168), a new glucagon-like peptide-1 receptor agonist, as an add-on to metformin therapy in Chinese patients with type 2 diabetes (T2D). MATERIALS AND METHODS: This was a multicentre, randomized, double-blind, placebo-controlled phase 3b trial. After metformin monotherapy (≥1500 mg/day) for 8 weeks or more, patients with uncontrolled T2D (HbA1c of 7.0%-10.5%) from 44 sites were randomized (1:1:1) to metformin + placebo, metformin + PEX168 100 µg, and metformin + PEX168 200 µg. The core treatment period lasted for 24 weeks, followed by a 28-week extension period. The primary endpoint was the change in HbA1c levels at week 24. The main secondary endpoint was the proportion of patients with an HbA1c of less than 7.0% at week 24. RESULTS: The least-square mean (standard error) change in HbA1c levels was significantly greater (P < .001 for superiority) in the PEX168 groups (-1.16% [0.08%] and -1.14% [0.08%] with 100 and 200 µg, respectively) than in the placebo group (0.35% [0.08%]). The proportion of patients with an HbA1c of less than 7.0% at week 24 was significantly higher in the PEX168 100 µg (37.4%) and PEX168 200 µg (40.6%) groups than in the placebo group (16.8%; both P < .001). The gastrointestinal reactions were mild; the risks of hypoglycaemia and weight gain did not increase. Anti-PEX168 antibodies were noted in less than 2% of patients. No treatment-emergent serious adverse events occurred. CONCLUSION: The subcutaneous injection of PEX168 once a week can effectively, continuously and safely improve HbA1c levels in patients with T2D when combined with metformin.


Assuntos
Diabetes Mellitus Tipo 2 , Metformina , Diabetes Mellitus Tipo 2/tratamento farmacológico , Método Duplo-Cego , Quimioterapia Combinada , Hemoglobinas Glicadas/análise , Humanos , Hipoglicemiantes/efeitos adversos , Metformina/efeitos adversos , Peptídeos/uso terapêutico , Polietilenoglicóis , Resultado do Tratamento
12.
Pediatr Surg Int ; 35(3): 347-355, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30474700

RESUMO

BACKGROUND: There are many advantages of a SMOF emulsion (SMOF-lipid), such as liver-protective properties and anti-inflammatory effects. The objective of this study was to compare the clinical outcomes of SMOF-lipid with medium-chain triglycerides (MCT) /long-chain triglycerides (LCT) in infants after intestinal surgery. METHODS: This was a prospective, randomized study. Neonates receiving intravenous nutrient solution, including lipid emulsion after gastrointestinal surgery, were included in this study. The patients were randomly assigned to the SMOF-lipid or MCT/LCT groups. Infants who received intravenous lipid emulsion continuously for > 2 weeks were considered to have completed the study. Differences in weight gain, nutrition indices, alanine transaminase (ALT), aspartate transaminase (AST), and direct bilirubin (DB), and inflammation cytokine markers (interleukin [IL]-6 and tumor necrosis factor [TNF]-α) were measured. RESULTS: The final sample included 160 infants. One hundred fourteen infants received intravenous SMOF-lipid (74) or MCT/LCT (86) > 2 weeks and 46 infants received intravenous SMOF-lipid (22) or MCT/LCT (24) > 4 weeks. There were no significant differences in weight gain, nutrition indices, inflammation cytokine markers, and sepsis between the groups at the end of 2 and 4 weeks; however, in the SMOF group, the ALT, AST, and DB levels were significantly lower than the MCT/LCT group at the end of 4 weeks. CONCLUSION: The mixture and balanced emulsion of SMOF-lipid was well-tolerated in infants who have undergone gastrointestinal surgery, and liver-protective properties were demonstrated following long-term venous nutrition, especially > 4 weeks.


Assuntos
Procedimentos Cirúrgicos do Sistema Digestório , Emulsões Gordurosas Intravenosas/administração & dosagem , Nutrição Parenteral/métodos , Cuidados Pós-Operatórios/métodos , Feminino , Seguimentos , Humanos , Recém-Nascido , Masculino , Estudos Prospectivos , Resultado do Tratamento
13.
J Cell Mol Med ; 22(10): 4913-4921, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-30073757

RESUMO

HSCR (Hirschsprung's disease) is a serious congenital defect, and the aetiology of it remains unclear. Many studies have highlighted the significant roles of intronic miRNAs and their host genes in various disease, few was mentioned in HSCR although. In this study, miR-483-3p along with its host gene IGF2 (Insulin-like growth factor 2) was found down-regulated in 60 HSCR aganglionic colon tissues compared with 60 normal controls. FHL1 (Four and a half LIM domains 1) was determined as a target gene of miR-483-3p via dual-luciferase reporter assay, and its expression was at a higher level in HSCR tissues. Here, we study cell migration and proliferation in human 293T and SH-SY5Y cell lines by performing Transwell and CCK8 assays. In conclusion, the knockdown of miR-483-3p and IGF2 both suppressed cell migration and proliferation, while the loss of FHL1 leads to opposite outcome. Furthermore, miR-483-3p mimics could rescue the negative effects on cell proliferation and migration caused by silencing IGF2, while the FHL1 siRNA may inverse the function of miR-483-3p inhibitor. This study revealed that miR-483-3p derived from IGF2 was associated with Hirschsprung's disease by targeting FHL1 and may provide a new pathway to understand the aetiology of HSCR.


Assuntos
Doença de Hirschsprung/genética , Fator de Crescimento Insulin-Like II/genética , Peptídeos e Proteínas de Sinalização Intracelular/genética , Proteínas com Domínio LIM/genética , MicroRNAs/genética , Proteínas Musculares/genética , Linhagem Celular Tumoral , Movimento Celular/genética , Proliferação de Células/genética , Feminino , Regulação da Expressão Gênica/genética , Técnicas de Silenciamento de Genes , Células HEK293 , Doença de Hirschsprung/patologia , Humanos , Lactente , Masculino , RNA Interferente Pequeno/genética
14.
Diabetes Obes Metab ; 20(4): 1044-1049, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-29144061

RESUMO

This prospective, multicentre, phase III study (NCT02104804) evaluated the efficacy and safety of saxagliptin add-on therapy in Chinese patients with type 2 diabetes inadequately controlled by insulin ± metformin. Patients with glycated haemoglobin (HbA1c) 7.5% to 10.5% and fasting plasma glucose (FPG) <15 mmol/L (270 mg/dL) on stable insulin therapy (20-150 U/d) were randomized (1:1) to saxagliptin 5 mg once daily (N = 232) or placebo (N = 230) for 24 weeks, stratified by metformin use. The primary efficacy measure was change in HbA1c. Saxagliptin treatment resulted in a greater adjusted mean change in HbA1c from baseline to week 24 than placebo (-0.58%; P < .001), irrespective of metformin use, and a greater mean change in FPG (0.9 mmol/L [-15.9 mg/dL]; P < .001). More patients achieved HbA1c <7% with saxagliptin (11.4%) than with placebo (3.5%, P = .002). Adverse events and incidence of hypoglycaemia were similar in both groups. Overall, add-on saxagliptin 5 mg once daily significantly improved glycaemic control without increasing hypoglycaemia risk and was well tolerated in Chinese patients with type 2 diabetes inadequately controlled by insulin (± metformin).


Assuntos
Adamantano/análogos & derivados , Glicemia/efeitos dos fármacos , Diabetes Mellitus Tipo 2/tratamento farmacológico , Dipeptídeos/administração & dosagem , Insulina/administração & dosagem , Metformina/administração & dosagem , Adamantano/administração & dosagem , Adamantano/efeitos adversos , Adulto , Idoso , Povo Asiático , Glicemia/metabolismo , China , Diabetes Mellitus Tipo 2/sangue , Dipeptídeos/efeitos adversos , Método Duplo-Cego , Quimioterapia Combinada/efeitos adversos , Feminino , Hemoglobinas Glicadas/efeitos dos fármacos , Humanos , Insulina/efeitos adversos , Masculino , Metformina/efeitos adversos , Pessoa de Meia-Idade , Placebos
15.
Lifetime Data Anal ; 23(2): 275-304, 2017 04.
Artigo em Inglês | MEDLINE | ID: mdl-26809384

RESUMO

Lifetime data is often right-censored. Recent literature on the Gini index estimation with censored data focuses on independent censoring. However, the censoring mechanism is likely to be dependent censoring in practice. This paper proposes two estimators of the Gini index under independent censoring and covariate-dependent censoring, respectively. The proposed estimators are consistent and asymptotically normal. We also evaluate the performance of our estimators in finite samples through Monte Carlo simulations. Finally, the proposed methods are applied to real data.


Assuntos
Tábuas de Vida , Método de Monte Carlo , Interpretação Estatística de Dados , Humanos
16.
Diabetes Metab Res Rev ; 30(8): 726-35, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24639432

RESUMO

BACKGROUND: This study assessed the efficacy and safety of the once-daily glucagon-like peptide-1 receptor agonist, lixisenatide, in Asian patients with type 2 diabetes mellitus inadequately controlled on metformin ± sulfonylurea. METHODS: In this 24-week, double-blind, placebo-controlled, multinational study, patients were randomized to lixisenatide 20 µg once daily or placebo. The primary endpoint was absolute change in glycated haemoglobin (HbA1c ) from baseline to week 24. RESULTS: A total of 391 patients were randomized. Lixisenatide significantly reduced HbA1c levels compared with placebo (LS mean difference: -0.36%, p = 0.0004). A significantly higher proportion of lixisenatide-treated patients achieved HbA1c targets of <7% (p = 0.003) and ≤6.5% (p = 0.001) versus placebo. Lixisenatide was associated with a statistically significant reduction in 2-h postprandial plasma glucose after a standardized breakfast versus placebo (LS mean difference: -4.28 mmol/L, p < 0.0001) and a significant reduction in fasting plasma glucose (p = 0.0109). There was no difference in weight loss versus placebo, with a modest reduction in body weight reported for both groups (lixisenatide: -1.50 kg, placebo: -1.24 kg; p = 0.296). The incidence of treatment-emergent adverse events (TEAEs) was 64.3% with lixisenatide versus 47.4% with placebo, with serious TEAEs reported in 1.5% versus 2.1% of patients, respectively. The most common TEAE in the lixisenatide group was nausea (16.3% vs 2.6% with placebo). The incidence of symptomatic hypoglycaemia was 5.6% with lixisenatide treatment and 2.6% with placebo (p = 0.1321), with no severe symptomatic hypoglycaemia events reported. CONCLUSIONS: In Asian patients with type 2 diabetes mellitus insufficiently controlled on metformin ± sulfonylurea, lixisenatide significantly improved glycaemic control and was well tolerated during the 24-week study.


Assuntos
Diabetes Mellitus Tipo 2/tratamento farmacológico , Resistência a Medicamentos , Hiperglicemia/prevenção & controle , Hipoglicemiantes/uso terapêutico , Metformina/uso terapêutico , Peptídeos/uso terapêutico , Receptores de Glucagon/agonistas , Adulto , China , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/metabolismo , Método Duplo-Cego , Resistência a Múltiplos Medicamentos , Quimioterapia Combinada/efeitos adversos , Feminino , Receptor do Peptídeo Semelhante ao Glucagon 1 , Hemoglobinas Glicadas/análise , Humanos , Hipoglicemia/induzido quimicamente , Hipoglicemiantes/efeitos adversos , Malásia , Masculino , Metformina/efeitos adversos , Pessoa de Meia-Idade , Náusea/induzido quimicamente , Peptídeos/efeitos adversos , Receptores de Glucagon/metabolismo , Compostos de Sulfonilureia/efeitos adversos , Compostos de Sulfonilureia/uso terapêutico , Tailândia
17.
Can J Neurol Sci ; 41(4): 486-92, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24878474

RESUMO

OBJECTIVE: This study aimed to describe the frequency and temporal profile of acute cerebral infarction (ACI) using a continuous glucose monitoring system (CGMS) in patients with and without type 2 diabetes mellitus (T2DM) and explore the impact of blood glucose fluctuations on the short-term prognosis of ACI. METHODS: The subjects were divided into four groups: T2DM with acute cerebral infarction (DMCI, Group A, n=56); T2DM without acute cerebral infarction (DM-NCI, Group B, n=36); Acute cerebral infarction patients without T2DM (NDM-CI, Group C, n=54); Healthy control group (NG, Group D, n=36). The National Institutes of Health Stoke Scale (NIHSS) and modified Rankin scale (mRs) were collected in Group A and C. All subjects were monitored for 72 hours using the CGMS. Indices such as fasting blood glucose (FBG) and mean amplitude of glycemic excursions (MAGE) were calculated. Glycemic excursions were compared between Group A, B, C and Group D, respectively. Multiple linear regression analysis and logistic analysis was applied. RESULTS: MAGE is related to NIHSS, homocysteine (HCY), HOMA-IR, FBG, CRP and IMT, while NIHSS is related to CRP, HCY, HOMA-IR, IMT. The factors impacting the short-term prognosis of ACI were NIHSS, HBA1C and MAGE. CONCLUSION: Larger glucose fluctuations are associated with more stroke risk factors and are associated with a poorer short-term prognosis. More attention should be paid to glucose fluctuations in patients with ACI and a history of T2DM.


Assuntos
Glicemia/metabolismo , Infarto Cerebral/sangue , Infarto Cerebral/diagnóstico , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/diagnóstico , Doença Aguda , Idoso , Automonitorização da Glicemia/tendências , Infarto Cerebral/epidemiologia , Diabetes Mellitus Tipo 2/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
18.
Arch Phys Med Rehabil ; 95(5): 832-9, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24445089

RESUMO

OBJECTIVE: To investigate the effect of combination therapy of backward walking training and alpha-lipoic acid (ALA) treatment on the distribution of plantar pressure in patients with diabetic peripheral neuropathy (DPN). DESIGN: This study is a double-blinded, randomized controlled trial. The test group was treated with combination therapy of backward walking exercise and ALA (ALA for 2wk, backward walking exercise for 12wk), and the control group only received ALA treatment. SETTING: Clinical and laboratory setting. PARTICIPANTS: Patients with DPN (N=60) were divided into the test group (n=30) or control group (n=30). INTERVENTIONS: Backward walking exercise with ALA treatment for the test group; lipoic acid treatment for the control group. MAIN OUTCOME MEASURE: Plantar pressure before and after treatment was tested and analyzed with the flatbed plantar pressure measurement system. RESULTS: After treatment, peak plantar pressure in the forefoot dropped for both the test and control groups; peak plantar pressure for the test group dropped significantly. Peak plantar pressure in the medial foot slightly increased for the test group, suggesting a more even distribution of plantar pressure in the test group after treatment. CONCLUSIONS: The combination therapy of ALA and backward walking proved to be more effective than ALA monotherapy. Backward walking also proved to have an ameliorating effect on balance ability and muscle strength of patients with DPN.


Assuntos
Neuropatias Diabéticas/reabilitação , Teste de Esforço/métodos , Terapia por Exercício/métodos , Antepé Humano/fisiopatologia , Marcha/fisiologia , Caminhada/fisiologia , Adulto , Neuropatias Diabéticas/fisiopatologia , Método Duplo-Cego , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Força Muscular/fisiologia , Pressão , Estudos Retrospectivos , Resultado do Tratamento
19.
J Gynecol Oncol ; 35(3): e27, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38216133

RESUMO

OBJECTIVE: To determine whether proactive molecular risk classifier for endometrial cancer (ProMisE) could be used to assess the prognosis of patients with atypical endometrial hyperplasia (AEH) or early-stage endometrial cancer (EC) treated with levonorgestrel-releasing intrauterine system (LNG-IUS). METHODS: A retrospective cohort study was conducted among 93 AEH or early-stage EC patients who received LNG-IUS to preserve fertility . By immunohistochemistry and gene sequencing, 4 subtypes of ProMisE were identified (p53 wild type [p53 wt], mismatch repair-deficient [MMRd], p53-abnormal, and POLE-mutated). The primary outcome was the time to complete response (CR) after LNG-IUS therapy. Secondary outcomes included the recurrence rate after CR and success rate of conception. RESULTS: Among the 93 patients, 15 (16.1%) were classified as MMRd, 6 (6.5%) as POLE-mutated, 5 (5.4%) as p53-abnormal, and 67 (72.0%) as p53 wt. Comparison of serum cancer antigen 125, family history of tumor, and positive rates of programmed cell death 1 ligand 1 protein and Ki67 protein in 4 groups showed statistically significant differences (p<0.05). Patients with the p53-abnormal subtype had the lowest overall CR rate (40%) and the highest recurrence rate (2/2). Patients with POLE-mutated subtype had the best prognosis, and all 6 patients achieved CR. When patients achieved complete remission, assisted reproductive technology was more likely to help them conceive than natural conception (p<0.05). CONCLUSION: Patients with early-stage EC or AEH who are more likely to benefit from fertility-sparing treatment can be identified using ProMisE classifier. Patients with POLE-mutated are suitable for fertility-sparing treatment with LNG-IUS.


Assuntos
Hiperplasia Endometrial , Neoplasias do Endométrio , Preservação da Fertilidade , Dispositivos Intrauterinos Medicados , Levanogestrel , Humanos , Feminino , Neoplasias do Endométrio/tratamento farmacológico , Neoplasias do Endométrio/genética , Neoplasias do Endométrio/patologia , Levanogestrel/administração & dosagem , Estudos Retrospectivos , Preservação da Fertilidade/métodos , Adulto , Hiperplasia Endometrial/tratamento farmacológico , Hiperplasia Endometrial/genética , Hiperplasia Endometrial/patologia , Proteína Supressora de Tumor p53/genética , Pessoa de Meia-Idade , Mutação , Proteínas de Ligação a Poli-ADP-Ribose/genética , Resultado do Tratamento
20.
PLoS One ; 19(1): e0297269, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38295091

RESUMO

BACKGROUND: Knee osteoarthritis (KOA) is a common disabling joint disease that affects millions of people worldwide. Diet may play a role in the etiology and progression of KOA, but evidence for a causal relationship is limited. We aimed to investigate the causal impact of dietary intake on KOA risk using Mendelian randomization (MR). METHODS: We used summary-level data from genome-wide association studies (GWAS) including dietary intake (n = 335, 394-462, 342), and KOA (n = 403, 124). We selected 6-77 genetic variants as instrumental variables for 18 dietary factors, including processed meat, poultry, beef, oily fish, non-oily fish, pork, lamb, frequency of alcohol intake, alcoholic beverages, tea, coffee, dried fruit, cereals, cheese, bread, cooked vegetables, salad/raw vegetables, and fresh fruit. We performed univariate and multivariate MR analyses to estimate the causal effect of each dietary factor on KOA risk. We also performed some sensitivity analyses to assess the validity of the MR hypothesis. RESULTS: We found that higher coffee intake was associated with increased KOA risk, whereas higher intake of dried fruits, grains, cheese, and oily fish was associated with reduced KOA risk. After multivariate adjustment, we found that coffee and oily fish intake may affect KOA through obesity, body mass index (BMI), diabetes, hypertension, and prolonged standing. Sensitivity analyses did not reveal any evidence of pleiotropy. CONCLUSIONS: Our study provides new causal evidence that dietary intake may influence KOA risk. Specifically, we suggest that increased intake of dried fruits, grains, cheese, and oily fish and decreased coffee intake may be beneficial in preventing and mitigating KOA. further studies are needed to elucidate the underlying mechanisms and to confirm our findings in different populations.


Assuntos
Osteoartrite do Joelho , Bovinos , Humanos , Animais , Ovinos , Osteoartrite do Joelho/etiologia , Osteoartrite do Joelho/genética , Análise da Randomização Mendeliana , Café , Estudo de Associação Genômica Ampla , Dieta
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA