Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 8 de 8
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
World J Pediatr ; 2022 Jun 13.
Artigo em Inglês | MEDLINE | ID: mdl-35697958

RESUMO

BACKGROUND: Several studies have shown the effectiveness of the Early Start Denver Model (ESDM), but few studies have explored the long-term efficacy of ESDM. This study aimed to explore the efficacy and moderating factors of ESDM in Chinese toddlers with autism spectrum disorder (ASD) in a longitudinal way. METHODS: A total of 60 toddlers with ASD were recruited and randomly divided into two groups: ESDM group all received 24 weeks intervention; Control group were waiting for intervention. Baseline assessment (T0) was conducted before intervention, including Gesell Developmental Scale (GDS) and Psycho-educational Profile-3rd Edition (PEP-3). All toddlers with ASD were examined in the first assessment (T1) at 6 months and in the second assessment (T2) at 12 months. RESULTS: In T1 assessment, the increments in speech and personal communication development quotient in GDS were significantly larger in the ESDM group than in the control group (P = 0.010, 0.047). In T2 assessment, the ESDM group had higher elevation in cognitive verbal/preverbal (CVP), social reciprocity and characteristic verbal behaviors assessed by PEP-3 (P = 0.021, 0.046, 0.014). In addition, the severity of stereotyped behavior was negatively associated with improvement in CVP. Family income was positively associated with improvement in speech and CVP (all P < 0.05). CONCLUSIONS: ESDM can effectively improve speech and communication in toddlers with ASD after 24-week intervention. More importantly, ESDM can promote cognition and social interaction and can reduce stereotyped verbal behavior in toddlers with ASD in longitudinal observation. The severity of stereotyped behavior and family ecological factors may be considered as affecting the efficacy of ESDM.

2.
J Vasc Surg ; 76(2): 546-555.e3, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-35470015

RESUMO

OBJECTIVE: The optimal revascularization modality following complete resection of aortic graft infection (AGI) without enteric involvement remains unclear. The purpose of this investigation is to determine the revascularization approach associated with the lowest morbidity and mortality using real-world data in patients undergoing complete excision of AGI. METHODS: A retrospective, multi-institutional study of AGI from 2002 to 2014 was performed using a standardized database. Baseline demographics, comorbidities, and perioperative variables were recorded. The primary outcome was infection-free survival. Descriptive statistics, Kaplan-Meier survival analysis, and univariate and multivariable analyses were performed. RESULTS: A total of 241 patients at 34 institutions from seven countries presented with AGI during the study period (median age, 68 years; 75% male). The initial aortic procedures that resulted in AGI were 172 surgical grafts (71%), 66 endografts (27%), and three unknown (2%). Of the patients, 172 (71%) underwent complete excision of infected aortic graft material followed by in situ (in-line) bypass (ISB), including antibiotic-treated prosthetic graft (35%), autogenous femoral vein (neo-aortoiliac surgery) (24%), and cryopreserved allograft (41%). Sixty-nine patients (29%) underwent extra-anatomic bypass (EAB). Overall median Kaplan-Meier estimated survival was 5.8 years. Perioperative mortality was 16%. When stratified by ISB vs EAB, there was a significant difference in Kaplan-Meier estimated infection-free survival (2910 days; interquartile range, 391-3771 days vs 180 days; interquartile range, 27-3750 days; P < .001). There were otherwise no significant differences in presentation, comorbidities, or perioperative variables. Multivariable Cox regression showed lower infection-free survival among patients with EAB (hazard ratio [HR], 2.4; 95% confidence interval [CI], 1.6-3.6; P < .001), polymicrobial infection (HR, 2.2; 95% CI, 1.4-3.5; P = .001), methicillin-resistant Staphylococcus aureus infection (HR, 1.7; 95% CI, 1.1-2.7; P = .02), as well as the protective effect of omental/muscle flap coverage (HR, 0.59; 95% CI, 0.37-0.92; P = .02). CONCLUSIONS: After complete resection of AGI, perioperative mortality is 16% and median overall survival is 5.8 years. EAB is associated with nearly a two and one-half-fold higher reinfection/mortality compared with ISB. Omental and/or muscle flap coverage of the repair appear protective.


Assuntos
Implante de Prótese Vascular , Coinfecção , Staphylococcus aureus Resistente à Meticilina , Infecções Relacionadas à Prótese , Idoso , Prótese Vascular/efeitos adversos , Coinfecção/cirurgia , Feminino , Humanos , Masculino , Infecções Relacionadas à Prótese/diagnóstico , Infecções Relacionadas à Prótese/cirurgia , Reoperação , Estudos Retrospectivos , Fatores de Risco , Resultado do Tratamento
3.
Bioact Mater ; 7: 98-111, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34466720

RESUMO

Injectable biomaterial-based treatment is a promising strategy to enhance tissue repair after traumatic spinal cord injury (SCI) by bridging cavity spaces. However, there are limited reports of injectable, electroconductive hydrogels with self-healing properties being employed for the treatment of traumatic SCI. Hence, a natural extracellular matrix (ECM) biopolymer (chondroitin sulphate and gelatin)-based hydrogel containing polypyrrole, which imparted electroconductive properties, is developed for traumatic SCI repair. The resulting hydrogels showed mechanical (~928 Pa) and conductive properties (4.49 mS/cm) similar to natural spinal cord tissues. Moreover, the hydrogels exhibited shear-thinning and self-healing abilities, which allows it to be effectively injected into the injury site and to fill the lesion cavity to accelerate the tissue repair of traumatic SCI. In vitro, electroconductive ECM hydrogels promoted neuronal differentiation, enhanced axon outgrowth, and inhibited astrocyte differentiation. The electroconductive ECM hydrogel activated endogenous neural stem cell neurogenesis in vivo (n = 6), and induced myelinated axon regeneration into the lesion site via activation of the PI3K/AKT and MEK/ERK pathways, thereby achieving significant locomotor function restoration in rats with spinal cord injury (p < 0.001, compared to SCI group). Overall, the injectable self-healing electroconductive ECM-based hydrogels developed in this study are ideal biomaterials for treatment of traumatic SCI.

4.
ACS Appl Mater Interfaces ; 13(43): 50836-50850, 2021 Nov 03.
Artigo em Inglês | MEDLINE | ID: mdl-34689546

RESUMO

Polyetheretherketone (PEEK) is a biocompatible polymer, but its clinical application is largely limited due to its inert surface. To solve this problem, a multifunctional PEEK implant is urgently fabricated. In this work, a dual-metal-organic framework (Zn-Mg-MOF74) coating is bonded to PEEK using a mussel-inspired polydopamine interlayer to prepare the coating, and then, dexamethasone (DEX) is loaded on the coating surface. The PEEK surface with the multifunctional coating provides superior hydrophilicity and favorable stability and forms an alkaline microenvironment when Mg2+, Zn2+, 2,5-dihydroxyterephthalic acid, and DEX are released due to the coating degradation. In vitro results showed that the multifunctional coating has strong antibacterial ability against both Escherichia coli and Staphylococcus aureus; it also improves human umbilical vein endothelial cell angiogenic ability and enhances rat bone marrow mesenchymal stem cell osteogenic differentiation activity. Furthermore, the in vivo rat subcutaneous infection model, chicken chorioallantoic membrane model, and rat femoral drilling model verify that the PEEK implant coated with the multifunctional coating has strong antibacterial and angiogenic ability and promotes the formation of new bone around the implant with a stronger bone-implant interface. Our findings indicate that DEX loaded on the Zn-Mg-MOF74 coating-modified PEEK implant with bacteriostasis, angiogenesis, and osteogenesis properties has great clinical application potential as bone graft materials.


Assuntos
Antibacterianos/farmacologia , Regeneração Óssea/efeitos dos fármacos , Estruturas Metalorgânicas/farmacologia , Neovascularização Patológica/tratamento farmacológico , Adsorção , Animais , Antibacterianos/síntese química , Antibacterianos/química , Benzofenonas/química , Benzofenonas/farmacologia , Dexametasona/química , Dexametasona/farmacologia , Escherichia coli/efeitos dos fármacos , Magnésio/química , Magnésio/farmacologia , Masculino , Estruturas Metalorgânicas/síntese química , Estruturas Metalorgânicas/química , Testes de Sensibilidade Microbiana , Estrutura Molecular , Neovascularização Patológica/microbiologia , Polímeros/química , Polímeros/farmacologia , Ratos , Ratos Sprague-Dawley , Staphylococcus aureus/efeitos dos fármacos , Zinco/química , Zinco/farmacologia
5.
Nanomedicine (Lond) ; 16(18): 1567-1579, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-34189939

RESUMO

Aim: Bone mesenchymal stem cell-derived exosomes (Exos) have been shown to exert therapeutic effects in spinal cord injury (SCI). In this study, we aimed to apply bioengineering approaches to promote Exo retention and their sustained release for SCI repair. Materials & methods: 3D gelatin methacrylate hydrogel (GelMA) was used as a transplanted Exo delivery system (GelMA-Exos). The viability, proliferation, and differentiation of neural stem cells cultured on hydrogel were assessed. Further, GelMA-Exos was injected into the damaged lesions to assess its repair potential. Results: GelMA hydrogel enhanced the retention of Exos, which promoted the neuronal differentiation and extension in vitro. Furthermore, GelMA-Exos promoted neurogenesis and attenuated glial scars in the damaged lesions. Conclusion: The injectable Exo-loaded 3D hydrogel induced neurological functional recovery post SCI.


Assuntos
Exossomos , Células-Tronco Mesenquimais , Traumatismos da Medula Espinal , Diferenciação Celular , Humanos , Hidrogéis , Traumatismos da Medula Espinal/tratamento farmacológico
6.
Am Surg ; 87(6): 965-970, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33291946

RESUMO

PURPOSE: Limited data are available describing the long-term results of pediatric patients undergoing aortic repair secondary to trauma. Therefore, this descriptive investigation was completed to abrogate this deficit. METHODS: A retrospective review of an urban level 1 pediatric trauma database maintained at a high-volume dedicated children's hospital between 2008-2018 was completed to capture all cases of severe traumatic aortic injury and associated demographics, mechanisms, injury severity, treatment, and clinical outcomes. RESULTS: In the prespecified interval, 2189 children (age <18 years) presented to our facility as a level 1 trauma activation. Of these cases, a total of 10 patients (.5%) had a demonstrable thoracic or abdominal aortic injury. The mean age of our study cohort was 10.4 ± 5.7 years. The mechanism of injury consisted of 8 participants involved in motor vehicle accidents, 1 pedestrian struck by a vehicle, and 1 struck by a falling boulder. Injuries were identified via CT angiogram (n = 9) or autopsy (n = 1) and consisted of 6 thoracic aortas and 4 abdominal aortas. The mean trauma injury severity score was 37.6 ± 19.9. Seven of the patients underwent open surgical intervention, 1 underwent endovascular intervention, 1 was treated with medical management, and 1 patient expired in the trauma bay before surgery could be performed. Aortic pathologies observed were 6 transections, 2 dissections, and 2 occlusions. Five of the ten patients underwent nonaortic surgical procedures. To determine operative outcomes, we excluded the 2 patients who did not receive aortic intervention. In the 8 remaining patients, the mean hospital length of stay was 12.8 ± 4.8 days with 6.8 ± 4.1 days in the intensive care unit. All 9 participants who survived the initial trauma evaluation were discharged from the hospital. Mean follow-up was 38.3 ± 43.0 months; during which, we observed no additional aortic-related morbidity, mortality, and reinterventions. The only stent-graft deployed remained in stable position without evidence of endoleak or migration by duplex. CONCLUSION: Traumatic aortic injury is exceedingly rare in children and primarily of blunt etiology. Of the patients who survive the scene, operative repair seems to be associated with excellent perioperative and long-term survival.


Assuntos
Aorta/lesões , Procedimentos Cirúrgicos Vasculares , Lesões do Sistema Vascular/cirurgia , Adolescente , Criança , Pré-Escolar , Feminino , Hospitais Pediátricos , Humanos , Lactente , Escala de Gravidade do Ferimento , Tempo de Internação/estatística & dados numéricos , Masculino , Estudos Retrospectivos
7.
Ann Vasc Surg ; 57: 129-136, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-30684629

RESUMO

BACKGROUND: Junctional separation and resulting type IIIa endoleak is a well-known problem after EVAR (endovascular aneurysm repair). This complication results in sac pressurization, enlargement, and eventual rupture. In this manuscript, we review the incidence of this late finding in our experience with the Cook Zenith fenestrated endoprosthesis (ZFEN, Bloomington, IN). METHODS: A retrospective review was performed of a prospectively maintained institutional ZFEN fenestrated EVAR database capturing all ZFENs implanted at a large-volume, academic hospital system. Patients who experienced junctional separation between the fenestrated main body and distal bifurcated graft (with or without type IIIa endoleak) at any time after initial endoprosthesis implantation were subject to further evaluation of imaging and medical records to abstract clinical courses. RESULTS: In 110 ZFENs implanted from October 2012 to December 2017 followed for a mean of 1.5 years, we observed a 4.5% and 2.7% incidence of clinically significant junctional separation and type IIIa endoleak, respectively. Junctional separation was directly related to concurrent type Ib endoleak in all 5 patients. Three patients presented with sac enlargement. One patient did not demonstrate any evidence of clinically significant endoleak and had a decreasing sac size during follow-up imaging. The mean time to diagnosis of modular separation in these patients was 40 months. Junctional separation was captured in surveillance in 2 patients and reintervened upon before manifestation of endoleak. However, the remaining 3 patients completed modular separation resulting in rupture and emergent intervention in 2 and an aortic-related mortality in the other. CONCLUSIONS: Junctional separation between the fenestrated main and distal bifurcated body with the potential for type IIIa endoleak is an established complication associated with the ZFEN platform. Therefore, we advocate for maximizing aortic overlap during the index procedure followed by aggressive surveillance and treatment of stent overlap loss captured on imaging.


Assuntos
Aorta Abdominal/cirurgia , Aneurisma da Aorta Abdominal/cirurgia , Aortografia/métodos , Implante de Prótese Vascular/instrumentação , Prótese Vascular , Angiografia por Tomografia Computadorizada , Endoleak/diagnóstico por imagem , Procedimentos Endovasculares/instrumentação , Migração de Corpo Estranho/diagnóstico por imagem , Falha de Prótese , Stents , Idoso , Aorta Abdominal/diagnóstico por imagem , Aneurisma da Aorta Abdominal/diagnóstico por imagem , Implante de Prótese Vascular/efeitos adversos , Bases de Dados Factuais , Endoleak/etiologia , Procedimentos Endovasculares/efeitos adversos , Migração de Corpo Estranho/etiologia , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Desenho de Prótese , Estudos Retrospectivos , Fatores de Tempo , Resultado do Tratamento
8.
Neurosci Bull ; 33(2): 153-160, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28238115

RESUMO

The aim of this study was to explore the differences between boys and girls in the diagnosis and clinical phenotypes of autism spectrum disorder (ASD) in China's mainland. Children diagnosed with ASD (n = 1064, 228 females) were retrospectively included in the analysis. All children were assessed using the Autism Diagnostic Interview-Revised (ADI-R) and Autism Diagnostic Observation Schedule (ADOS). The results showed that girls scored significantly higher in ADI-R socio-emotional reciprocity than boys, and also scored lower in ADI-R and ADOS restricted and repetitive behaviors (RRBs). Meanwhile, the proportions of girls who satisfied the diagnostic cut-off scores in the ADI-R RRBs domain were lower than in boys (P < 0.05). Our results indicated that girls with ASD show greater socio-emotional reciprocity than boys. Girls also tended to show fewer RRBs than boys, and the type of RRBs in girls differ from those in boys. The ADI-R was found to be less sensitive in girls, particularly for assessment in the RRBs domain.


Assuntos
Transtorno do Espectro Autista , Deficiências do Desenvolvimento/etiologia , Caracteres Sexuais , Transtorno do Espectro Autista/complicações , Transtorno do Espectro Autista/diagnóstico , Transtorno do Espectro Autista/psicologia , Criança , Pré-Escolar , China , Comunicação , Feminino , Humanos , Relações Interpessoais , Masculino , Fenótipo , Escalas de Graduação Psiquiátrica , Estudos Retrospectivos , Estatísticas não Paramétricas , Comportamento Estereotipado/fisiologia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...