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1.
Dev Biol ; 511: 1-11, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38548146

RESUMEN

Maintenance of appropriate muscle mass is crucial for physical activity and metabolism. Aging and various pathological conditions can cause sarcopenia, a condition characterized by muscle mass decline. Although sarcopenia has been actively studied, the mechanisms underlying muscle atrophy are not well understood. Thus, we aimed to investigate the role of Phosphatidylserine synthase (Pss) in muscle development and homeostasis in Drosophila. The results showed that muscle-specific Pss knockdown decreased exercise capacity and produced sarcopenic phenotypes. In addition, it increased the apoptosis rate because of the elevated reactive oxygen species production resulting from mitochondrial dysfunction. Moreover, the autophagy rate increased due to increased FoxO activity caused by reduced Akt activity. Collectively, these findings demonstrate that enhanced apoptosis and autophagy rates resulting from muscle-specific Pss knockdown jointly contribute to sarcopenia development, highlighting the key role of the PSS pathway in muscle health.


Asunto(s)
Apoptosis , Proteínas de Drosophila , Drosophila melanogaster , Atrofia Muscular , Especies Reactivas de Oxígeno , Animales , Proteínas de Drosophila/metabolismo , Proteínas de Drosophila/genética , Atrofia Muscular/metabolismo , Atrofia Muscular/patología , Especies Reactivas de Oxígeno/metabolismo , Autofagia/genética , Factores de Transcripción Forkhead/metabolismo , Factores de Transcripción Forkhead/genética , Proteínas Proto-Oncogénicas c-akt/metabolismo , Proteínas Proto-Oncogénicas c-akt/genética , Músculo Esquelético/patología , Músculo Esquelético/metabolismo , Sarcopenia/patología , Sarcopenia/metabolismo , Mitocondrias/metabolismo , Mitocondrias/patología , Drosophila/metabolismo , Técnicas de Silenciamiento del Gen
2.
Sensors (Basel) ; 24(1)2023 Dec 26.
Artículo en Inglés | MEDLINE | ID: mdl-38202994

RESUMEN

Amputees typically experience changes in residual limb volume in their daily lives. It causes an uncomfortable fit of the socket by applying high pressure on the sensitive area of the residual limb or by loosening the socket. In this study, we developed a transfemoral prosthetic socket for above-the-knee amputees that ensures a good socket fit by maintaining uniform and constant contact pressure despite volume changes in the residual limb. The socket has two air bladders in the posterior femoral region, and the pneumatic controller is located on the tibia of the prosthesis. The pneumatic system aims to minimize unstable fitting of the socket and improve walking performance by inflating or deflating the air bladder. The developed socket autonomously maintains the air pressure inside the prosthetic socket at a steady-state error of 3 mmHg or less by adjusting the amount of air in the air bladder via closed-loop control. In the clinical trial, amputee participants walked on flat and inclined surfaces. The displacement between the residual limb and socket during the gait cycle was reduced by up to 33.4% after air injection into the socket. The inflatable bladder increased the knee flexion angle on the affected side, resulting in increased stride length and gait velocity. The pneumatic socket provides a stable and comfortable walking experience not only when walking on flat ground but also on slopes.


Asunto(s)
Amputados , Miembros Artificiales , Humanos , Marcha , Caminata , Extremidades
3.
J Korean Med Sci ; 37(17): e138, 2022 May 02.
Artículo en Inglés | MEDLINE | ID: mdl-35502504

RESUMEN

BACKGROUND: To evaluate the incidence and related factors of rheumatoid arthritis (RA) flares after switching from intravenous tocilizumab (TCZ-IV) to subcutaneous tocilizumab (TCZ-SC) injection in stable RA patients. METHODS: We retrospectively evaluated the medical records of stable RA patients who used TCZ-IV for more than 6 months and switched to TCZ-SC between January 2013 and April 2020. RA flare was defined as an increase of more than 1.2 in the RA disease activity as assessed by the disease activity score in 28 joints. The factors associated with RA flare were evaluated by logistic regression analysis. RESULTS: Among 106 patients treated with TCZ-IV for > 6 months, 37 patients were switched to TCZ-SC after the acquisition of remission or low disease activity. RA flares occurred in 11 (29.7%) of patients who switched TCZ-SC. Results from the multivariable logistic analysis revealed that the dose of TCZ-IV per weight at switching (odds ratio [OR], 20.70; 95% confidence interval [CI], 2.22-192.84; P = 0.008) and methotrexate (MTX) non-use (OR, 8.53; 95% CI, 1.21-60.40; P = 0.032) were associated with the risk of RA flares after switching to TCZ-SC. Interestingly, most patients who switched back to TCZ-IV had their RA activity controlled again. CONCLUSION: MTX non-use and high dose of TCZ-IV per weight were associated with a risk of RA flare after switching to TCZ-SC. RA patients with these factors need to be carefully observed for flare after switching from TCZ-IV to TCZ-SC.


Asunto(s)
Artritis Reumatoide , Anticuerpos Monoclonales Humanizados , Artritis Reumatoide/tratamiento farmacológico , Humanos , Inyecciones Subcutáneas , Estudios Retrospectivos , Resultado del Tratamiento
4.
Health Promot Int ; 37(Supplement_2): ii97-ii108, 2022 Jun 23.
Artículo en Inglés | MEDLINE | ID: mdl-35748287

RESUMEN

Community-based participatory health (CBPH) programs are important for addressing health disparities; however, the limited development of validated scales to measure outcomes may hinder the utilization and upscaling of such programs. Thus, this study aimed to develop a culturally appropriate and valid tool for the quantitative evaluation of a CBPH program and to test theory-driven pathways of associations among participation, social capital, empowerment and health outcomes. This study used a participatory and mixed methods approach. Formative research, including a literature review, survey results over the past 2 years, focus group interviews and participatory evaluation committee meetings, was conducted. Four program components-participation, social capital, empowerment and quality of life (QoL)-were identified and used to construct a validated evaluation tool. A total of 317 participants (89.9% women, mean age = 57.7 ± 11.5 years) responded to the survey. The data were analyzed for internal consistency and factor structure. Structural equation modeling (SEM) was used to test the theoretical pathways of health promotion through the CBPH program. The SEM results showed two significant mediation pathways such that participation in interventions was associated with higher QoL via social capital accumulation and improved empowerment. Our results exemplify a validated scale that can be used to evaluate the intermediate- and long-term outcomes of a CBPH program.


This study aimed to develop a reliable and valid tool for the evaluation of community-based participatory health (CBPH) programs and to test a pathway to explain how participation may be associated with better health. The study used mixed methods, including focus group interviews, analysis of survey data from the past 2 years, participatory evaluation committee meetings and a main survey. Four core program components were identified: participation, social capital, empowerment and quality of life. In total, 317 participants responded to the survey. The results also showed that program participation was associated with a higher quality of life through increased social capital and empowerment. In conclusion, the developed evaluation tool can be used to evaluate the intermediate-and long-term outcomes of a CBPH program.


Asunto(s)
Participación de la Comunidad , Calidad de Vida , Anciano , Investigación Participativa Basada en la Comunidad , Femenino , Promoción de la Salud , Humanos , Masculino , Persona de Mediana Edad , Evaluación de Programas y Proyectos de Salud , Seúl
5.
Medicina (Kaunas) ; 58(11)2022 Nov 19.
Artículo en Inglés | MEDLINE | ID: mdl-36422219

RESUMEN

Background and Objectives: In patients with severe aortic stenosis (sAS), it is crucial to maintain hemodynamic stability during the induction and maintenance of general anesthesia for transcatheter aortic valve implantation (TAVI). In this study, we assessed the efficacy and safety of remimazolam in maintaining hemodynamic stability during anesthetic induction and maintenance. Cases: TAVI was performed on seven patients with sAS, and remimazolam was administered for total intravenous anesthesia (TIVA) of general anesthesia with induction (3.0 mg/kg/h) and maintenance (1.0 mg/kg/h). All patients underwent TAVI without major hemodynamic concerns and later recovered. Conclusions: Remimazolam can be safely used for induction and maintenance of general anesthesia in patients with sAS when performing TAVI.


Asunto(s)
Estenosis de la Válvula Aórtica , Reemplazo de la Válvula Aórtica Transcatéter , Humanos , Anestesia Intravenosa , Válvula Aórtica/cirugía , Resultado del Tratamiento , Estenosis de la Válvula Aórtica/cirugía , Anestesia General
6.
Sensors (Basel) ; 20(21)2020 Oct 28.
Artículo en Inglés | MEDLINE | ID: mdl-33126491

RESUMEN

Pre-impact fall detection can detect a fall before a body segment hits the ground. When it is integrated with a protective system, it can directly prevent an injury due to hitting the ground. An impact acceleration peak magnitude is one of key measurement factors that can affect the severity of an injury. It can be used as a design parameter for wearable protective devices to prevent injuries. In our study, a novel method is proposed to predict an impact acceleration magnitude after loss of balance using a single inertial measurement unit (IMU) sensor and a sequential-based deep learning model. Twenty-four healthy participants participated in this study for fall experiments. Each participant worn a single IMU sensor on the waist to collect tri-axial accelerometer and angular velocity data. A deep learning method, bi-directional long short-term memory (LSTM) regression, is applied to predict a fall's impact acceleration magnitude prior to fall impact (a fall in five directions). To improve prediction performance, a data augmentation technique with increment of dataset is applied. Our proposed model showed a mean absolute percentage error (MAPE) of 6.69 ± 0.33% with r value of 0.93 when all three different types of data augmentation techniques are applied. Additionally, there was a significant reduction of MAPE by 45.2% when the number of training datasets was increased by 4-fold. These results show that impact acceleration magnitude can be used as an activation parameter for fall prevention such as in a wearable airbag system by optimizing deployment process to minimize fall injury in real time.


Asunto(s)
Accidentes por Caídas , Aprendizaje Profundo , Dispositivos Electrónicos Vestibles , Aceleración , Accidentes por Caídas/prevención & control , Humanos
7.
J Oral Rehabil ; 47(3): 307-312, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-31557342

RESUMEN

The efficacy of a combination treatment of arthrocentesis and stabilisation splint for patients with bilateral anterior disc displacement without reduction (ADDWoR) and erosive change of the TMJ remains controversial. To evaluate clinical outcomes of patients with ADDWoR and erosive change of the TMJ after performance of unilateral arthrocentesis and stabilisation splint therapy. A retrospective study of 44 patients (37 females, 7 males, mean age of 34 years) with bilateral ADDWoR and erosive change of the TMJ were included in this study. Their clinical outcomes before and after arthrocentesis and stabilisation splint therapy were compared. Evaluation criteria were as follows: (a) Maximal mouth opening (MMO); (b) Right and left maximal lateral movement (RLM, LLM) and maximal protrusive movement (PM); (c) Visual analog scale (VAS) pain score during MMO, RLM, LLM and PM; and (d) VAS pain score during palpation of masticatory muscles. Wilcoxon signed-rank test, Mc Nemar test and paired t test were used for statistical analysis. Differences in VAS pain score between arthrocentesis and non-arthrocentesis sites were not statistically significant except MMO and LLM (P < .05) after 6 months. Differences in mean VAS pain scores for all variables between before arthrocentesis and 6 months follow-up in the arthrocentesis site were statistically significant. (P < .01). Unilateral arthrocentesis on more symptomatic TMJ and subsequent stabilisation splint therapy was highly successful for pain and achievement of normal range of mandibular movements in patients with both ADDWoR and bony change.


Asunto(s)
Luxaciones Articulares , Trastornos de la Articulación Temporomandibular , Adulto , Artrocentesis , Femenino , Humanos , Masculino , Dimensión del Dolor , Rango del Movimiento Articular , Estudios Retrospectivos , Férulas (Fijadores) , Articulación Temporomandibular , Resultado del Tratamiento
8.
J Biomech Eng ; 141(8)2019 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-30968932

RESUMEN

Pre-impact fall detection can send alarm service faster to reduce long-lie conditions and decrease the risk of hospitalization. Detecting various types of fall to determine the impact site or direction prior to impact is important because it increases the chance of decreasing the incidence or severity of fall-related injuries. In this study, a robust pre-impact fall detection model was developed to classify various activities and falls as multiclass and its performance was compared with the performance of previous developed models. Twelve healthy subjects participated in this study. All subjects were asked to place an inertial measuring unit module by fixing on a belt near the left iliac crest to collect accelerometer data for each activity. Our novel proposed model consists of feature calculation and infinite latent feature selection (ILFS) algorithm, auto labeling of activities, and application of machine learning classifiers for discrete and continuous time series data. Nine machine-learning classifiers were applied to detect falls prior to impact and derive final detection results by sorting the classifier. Our model showed the highest classification accuracy. Results for the proposed model that could classify as multiclass showed significantly higher average classification accuracy of 99.57 ± 0.01% for discrete data-based classifiers and 99.84 ± 0.02% for continuous time series-based classifiers than previous models (p < 0.01). In the future, multiclass pre-impact fall detection models can be applied to fall protector devices by detecting various activities for sending alerts or immediate feedback reactions to prevent falls.

9.
Implant Dent ; 28(3): 272-278, 2019 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-31124824

RESUMEN

OBJECTIVES: To determine the effect of raloxifene (RAL) on bone response around implants in the maxilla of osteoporotic rats. MATERIALS AND METHODS: Forty-five female rats at 8 weeks-old were divided into 3 groups: (1) control group, sham-operated rats, (2) ovariectomized group (OVX), and (3) ovariectomized and raloxifene-administered group (RAL). Eight weeks after the ovariectomy, upper right molar was extracted and an implant was placed at 4 weeks post-extraction. The RAL group was administered with 1 mg/kg/d of raloxifene via gavage while the OVX group and the control group received saline only. Three rats in each group were sacrificed at 1, 4, 7, 14, and 28 days and histologic sections were evaluated by hematoxylin and eosin staining and micro-computerized tomography was taken. RESULTS: The RAL group showed faster bone formation around the implant than the OVX group. At 4 weeks after implantation, newly formed bone close to implant threads was mature with considerable quantity of bone marrow in the RAL group. CONCLUSION: Raloxifene showed increased bone formation around implant. This might have clinical implications in prosthetic restoration by dental implants for patients with poor bone quality.


Asunto(s)
Implantes Dentales , Clorhidrato de Raloxifeno , Animales , Densidad Ósea , Femenino , Humanos , Maxilar , Osteogénesis , Ovariectomía , Ratas , Ratas Sprague-Dawley , Ratas Wistar
10.
J Wound Ostomy Continence Nurs ; 46(6): 491-496, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31738304

RESUMEN

PURPOSE: The purpose of this study was to identify the purpose, type, and site of medical adhesives (MAs) used for patient care and to measure the incidence of medical adhesive-related skin injury (MARSI) among patients in a pediatric intensive care unit (PICU). DESIGN: A prospective observational study. SUBJECTS AND SETTING: The sample comprised 60 children hospitalized at a 13-bed PICU in a university-affiliated tertiary care hospital in Yangsan (southeastern Korea) from August 2 to October 25, 2017. The median age was 2.9 months, and the composition of male and female was 34 (56.7%) and 26 (43.3%), respectively. METHODS: The skin of all participants was examined by first-line staff nurses every shift and occurrences of MARSI were confirmed by a wound care specialist. Characteristics of MA use were analyzed with descriptive statistics, and incidence rates of MARSI were calculated using 3 methods: (1) rate per 100 patients, (2) rate per 100 MAs, and (3) rate per 1000 days of MA use. Chi-squared (χ) tests were conducted to analyze associations between MARSI and sex, age group, and primary service type (medical vs surgical). RESULTS: The total number of MAs used was 414 and the total day of use of MAs was 1424.8. Medical adhesives most frequently used were endotracheal tube fixation devices (55/414) and fixation devices for the face (167/414). The number of MARSI occurrences was 35 cases in 23 patients; skin stripping was the most common form of MARSI (26/35). The incidence rate was 58.3 MARSIs per 100 patients, 8.5 MARSIs per 100 MAs, and 24.6 MARSIs per 1000 days of MA use. The MARSI incidence rate was significantly different based on age group (P = .014). CONCLUSION: We observed a frequent occurrence of MARSI among patients in the PICU, especially in patients requiring long-term use of MAs such as central line dressings or in MAs placed in high-moisture areas such as near an endotracheal tube. We highlight the importance of regular skin inspection and frequent but gentle replacement of MAs for prolonged use of MAs in critically ill children.


Asunto(s)
Piel/lesiones , Adhesivos Tisulares/normas , Femenino , Humanos , Lactante , Unidades de Cuidado Intensivo Pediátrico/organización & administración , Unidades de Cuidado Intensivo Pediátrico/estadística & datos numéricos , Masculino , Estudios Prospectivos , República de Corea , Piel/fisiopatología , Adhesivos Tisulares/efectos adversos , Adhesivos Tisulares/uso terapéutico
11.
Sensors (Basel) ; 18(4)2018 Apr 17.
Artículo en Inglés | MEDLINE | ID: mdl-29673165

RESUMEN

In order to overcome the current limitations in current threshold-based and machine learning-based fall detectors, an insole system and novel fall classification model were created. Because high-acceleration activities have a high risk for falls, and because of the potential damage that is associated with falls during high-acceleration activities, four low-acceleration activities, four high-acceleration activities, and eight types of high-acceleration falls were performed by twenty young male subjects. Encompassing a total of 800 falls and 320 min of activities of daily life (ADLs), the created Support Vector Machine model’s Leave-One-Out cross-validation provides a fall detection sensitivity (0.996), specificity (1.000), and accuracy (0.999). These classification results are similar or superior to other fall detection models in the literature, while also including high-acceleration ADLs to challenge the classification model, and simultaneously reducing the burden that is associated with wearable sensors and increasing user comfort by inserting the insole system into the shoe.

12.
Acta Odontol Scand ; 76(5): 374-379, 2018 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-29771181

RESUMEN

BACKGROUND: This study investigated the association between psychological factors and temporomandibular disorder (TMD) in a representative sample using data from the Korean nationwide survey. METHODS: The study included 1337 adolescents. Participants provided demographic, socio-economic and behavioural information, and responses to questionnaires assessing their mental health status including perceived stress, depressed mood and suicidal ideation in the presence of TMD. In univariate analysis, t-test was used to test the association between TMD and risk factors by gender in a complex sampling design. Multivariate logistic regression analyses were used to examine the association between TMD and psychological factors. RESULTS: Male adolescents with TMD were highly engaged with depressed mood and suicidal ideation (p = .0006, p = .0223), however, no psychological factors were significant in female adolescents (p < .05). Male adolescents with both depressed mood and suicidal ideation had significantly high rates of TMD (p = .0024). The risks for experiencing depressed mood (OR: 3.07) and suicidal ideation (OR: 2.564) were significantly associated with TMD in male adolescents after adjusting confounders. CONCLUSIONS: The results provide evidence that the depressed mood and suicidal ideation were associated with TMD in male adolescents. This study has important implications for enhanced screening and evaluation of mental health among patients with TMD according to gender.


Asunto(s)
Conducta del Adolescente/psicología , Trastornos de Ansiedad/psicología , Ideación Suicida , Trastornos de la Articulación Temporomandibular/psicología , Adolescente , Estudios Transversales , Femenino , Humanos , Masculino , Salud Mental , República de Corea , Factores de Riesgo , Encuestas y Cuestionarios
13.
Implant Dent ; 26(1): 4-11, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-27893514

RESUMEN

OBJECTIVE: Currently, much work has focused on the engineering of bone using adipose-derived stem cells (ADSCs), which differentiate into osteogenic cells. This study was conducted to assess the bone-regenerating capacity of ADSCs with genetic modification. MATERIALS AND METHODS: ADSCs were cultured and transduced with recombinant adenovirus-expressing bone morphogenetic protein-2 (rAd/BMP-2). Two 5-mm full-thickness bone defects were created on the parietal bones of 24 rats. The defects were left empty (n = 12), restored with a scaffold alone (n = 12), transplanted with ADSCs in osteogenic media (n = 12), or transplanted with rAd/BMP-2-transduced ADSCs (n = 12). Six defects from each group were assessed by histologic observation, histomorphometric analysis, and microcomputed tomography (micro-CT) imaging at 4 and 8 weeks after transplantation. RESULTS: Increased new bone formation was observed in the rAd/BMP-2-transduced ADSC groups, compared with the other groups. On micro-CT, significant differences were noted in bone volume-to-tissue volume ratios between rAd/BMP-2-transduced ADSCs group and the other groups at both time points (P < 0.05). CONCLUSION: The result demonstrates that transferring BMP-2 promotes the osteogenic differentiation of ADSCs and enhances bone regeneration. Under limitation of this study, genetic modification of ADSCs with BMP-2 could be adopted in clinical application.


Asunto(s)
Tejido Adiposo/citología , Proteína Morfogenética Ósea 2/farmacología , Regeneración Ósea/fisiología , Células Madre/fisiología , Andamios del Tejido , Animales , Regeneración Ósea/efectos de los fármacos , Diferenciación Celular/efectos de los fármacos , Diferenciación Celular/fisiología , Técnicas de Transferencia de Gen , Humanos , Ácido Láctico/metabolismo , Masculino , Ácido Poliglicólico/metabolismo , Copolímero de Ácido Poliláctico-Ácido Poliglicólico , Ratas Sprague-Dawley , Cráneo/cirugía , Células Madre/efectos de los fármacos , Microtomografía por Rayos X
14.
Implant Dent ; 25(2): 227-31, 2016 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-26513040

RESUMEN

OBJECTIVE: This study examined the effect of intermittent parathyroid hormone (PTH) administration on the bone response around implant on the maxilla of rats with ovariectomy-induced osteoporosis. MATERIAL AND METHODS: A total of 27 female Sprague-Dawley rats were divided into 3 groups (n = 9) and were ovariectomized (OVX). Eight weeks after, upper right molar was extracted and an implant was placed at 4 weeks after extraction. The PTH group received PTH, and the OVX group and the control group received vehicle only. Beginning after implant placement, 30 µg/kg of PTH was subcutaneously administered in the dorsum 3 times a week. Three rats in each group were killed at 1, 2, and 4 weeks and histologic sections were evaluated. RESULTS: After 4 weeks, the amount of newly formed bone around implants in the PTH group was comparable with the control group, with bone covering the implant surface in both groups. However, the OVX group displayed relatively small amount of new bone. CONCLUSION: Intermittent PTH has the potential to increase new bone formation around implant. These findings have clinical implications in prosthetic restoration by implants with poor bone quality.


Asunto(s)
Implantación Dental Endoósea/métodos , Implantes Dentales , Oseointegración/efectos de los fármacos , Hormona Paratiroidea/uso terapéutico , Animales , Interfase Hueso-Implante/crecimiento & desarrollo , Interfase Hueso-Implante/fisiopatología , Femenino , Maxilar/cirugía , Oseointegración/fisiología , Ovariectomía , Hormona Paratiroidea/administración & dosificación , Ratas , Ratas Sprague-Dawley , Titanio
15.
Electrophoresis ; 36(15): 1728-37, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-25963560

RESUMEN

Micro total analysis system (µTAS) or lab-on-a-chip (LOC) technology has advanced over decades, and the high performance for chemical and biological analysis has been well demonstrated with advantages of low sample consumption, rapid analysis time, high-throughput screening, and portability. In particular, µTAS or LOC based genetic applications have been extensively explored, and the short tandem repeat (STR) typing on a chip has garnered attention in the forensic community due to its special use for human identification in the field of mass disaster and missing person investigation, paternity testing, and perpetrator identification. The STR typing process consists of sample collection, DNA extraction, DNA quantitation, STR loci amplification, capillary electrophoretic separation, and STR profiling. Recent progress of microtechnology shows its ability to substitute the conventional analytical tools, and furthermore demonstrates total integration of the whole STR processes on a single wafer for on-site STR typing. In this review article, we highlighted some representative results for fluorescence labeling techniques, microchip-based DNA purification, on-chip polymerase chain reaction (PCR), a capillary electrophoretic microdevice, and a fully integrated microdevice for STR typing.


Asunto(s)
Técnicas de Genotipaje/métodos , Repeticiones de Microsatélite/genética , Análisis de Secuencia por Matrices de Oligonucleótidos/métodos
16.
J Biomech Eng ; 137(9)2015 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-26102486

RESUMEN

In general, three-dimensional ground reaction forces (GRFs) and ground reaction moments (GRMs) that occur during human gait are measured using a force plate, which are expensive and have spatial limitations. Therefore, we proposed a prediction model for GRFs and GRMs, which only uses plantar pressure information measured from insole pressure sensors with a wavelet neural network (WNN) and principal component analysis-mutual information (PCA-MI). For this, the prediction model estimated GRFs and GRMs with three different gait speeds (slow, normal, and fast groups) and healthy/pathological gait patterns (healthy and adolescent idiopathic scoliosis (AIS) groups). Model performance was validated using correlation coefficients (r) and the normalized root mean square error (NRMSE%) and was compared to the prediction accuracy of the previous methods using the same dataset. As a result, the performance of the GRF and GRM prediction model proposed in this study (slow group: r = 0.840-0.989 and NRMSE% = 10.693-15.894%; normal group: r = 0.847-0.988 and NRMSE% = 10.920-19.216%; fast group: r = 0.823-0.953 and NRMSE% = 12.009-20.182%; healthy group: r = 0.836-0.976 and NRMSE% = 12.920-18.088%; and AIS group: r = 0.917-0.993 and NRMSE% = 7.914-15.671%) was better than that of the prediction models suggested in previous studies for every group and component (p < 0.05 or 0.01). The results indicated that the proposed model has improved performance compared to previous prediction models.


Asunto(s)
Pie/fisiología , Marcha , Fenómenos Mecánicos , Redes Neurales de la Computación , Presión , Análisis de Ondículas , Adolescente , Fenómenos Biomecánicos , Femenino , Pie/fisiopatología , Humanos , Masculino , Análisis de Componente Principal , Escoliosis/fisiopatología , Adulto Joven
17.
Prev Chronic Dis ; 12: E152, 2015 Sep 17.
Artículo en Inglés | MEDLINE | ID: mdl-26378898

RESUMEN

INTRODUCTION: Korean Americans are a growing but understudied population group in the United States. High rates of potentially preventable hospitalizations suggest that primary care is underutilized. We compared preventable hospitalizations for chronic conditions in aggregate and for congestive heart failure (CHF) for Korean Americans and whites in Hawaii. METHODS: Discharge data from 2010 to 2012 for all hospitalizations of adults in Hawaii for preventable hospitalizations in aggregate and for CHF included 4,345 among Korean Americans and 81,570 among whites. Preventable hospitalization rates for chronic conditions and CHF were calculated for Korean Americans and whites by sex and age group (18-64 y vs ≥65 y). Unadjusted rate ratios for Korean Americans were calculated relative to whites. Multivariate models, controlling for insurance type and comorbidity, provided adjusted rate ratios (aRRs). RESULTS: Korean American women and men aged 65 or older were at greater risk of preventable hospitalization overall than white women (aRR, 2.48; P = .003) and white men (aRR, 1.82; P = .049). Korean American men aged 65 or older also were at greater risk of hospitalization for CHF relative to white men (aRR, 1.87; P = .04) and for older Korean American women (aRR, 1.75; P = .07). Younger age groups did not differ significantly. CONCLUSION: Older Korean American patients may have significant disparities in preventable hospitalizations, which suggests poor access to or poor quality of primary health care. Improving primary care for Korean Americans may prevent unnecessary hospitalizations, improve quality of life for Korean Americans with chronic illness, and reduce health care costs.


Asunto(s)
Asiático/estadística & datos numéricos , Enfermedad Crónica/prevención & control , Disparidades en Atención de Salud/normas , Insuficiencia Cardíaca/etnología , Insuficiencia Cardíaca/prevención & control , Hospitalización/estadística & datos numéricos , Adolescente , Adulto , Enfermedad Crónica/etnología , Comorbilidad , Femenino , Hawaii/epidemiología , Disparidades en Atención de Salud/etnología , Hospitalización/tendencias , Humanos , Corea (Geográfico)/etnología , Masculino , Persona de Mediana Edad , Alta del Paciente/estadística & datos numéricos , Garantía de la Calidad de Atención de Salud/normas , Factores de Riesgo , Población Blanca/estadística & datos numéricos , Adulto Joven
18.
Ethn Health ; 19(1): 64-85, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24261698

RESUMEN

OBJECTIVE: Because little is known about promising interventions to prevent and control chronic disease in Korean Americans, we conducted a systematic literature review to investigate: (1) theoretical frameworks and strategies employed by interventions targeting Korean Americans; (2) cultural factors considered by these interventions; and (3) the extent of their success in engaging Korean participants and improving their health. DESIGN: Following the PRISMA guidelines, PubMed, PsycInfo, and Web of Science were searched to identify primary research articles evaluating interventions to prevent or control chronic disease, tailored to Korean Americans, and published from 1980 through 2011. Of 238 articles identified, 21 articles describing16 unique intervention tests met inclusion criteria. These interventions targeted cancer (10), hypertension (2), diabetes (1), mental health (1), tobacco cessation (1), and general health (1). RESULTS: All included studies were published since 2000, reflecting the relatively recent establishment of intervention research with Korean Americans. All 16 programs delivered linguistically appropriate messages and education. The 11 programs that realized significant intervention effects also provided or coordinated social support from culturally relevant and well-trained lay health workers, nurses, or family members during an intervention and/or follow-up period. CONCLUSIONS: Culturally matched and linguistically appropriate messages and education may not be enough to prevent or control chronic disease among immigrant Korean Americans. Culturally sensitive and committed social support should be provided to catalyze behavioral changes and sustain the effect of the interventions.


Asunto(s)
Asiático/psicología , Enfermedad Crónica/etnología , Competencia Cultural , Conocimientos, Actitudes y Práctica en Salud/etnología , Promoción de la Salud/normas , Adulto , Enfermedad Crónica/prevención & control , Enfermedad Crónica/psicología , Bases de Datos Bibliográficas , Emigrantes e Inmigrantes/psicología , Promoción de la Salud/métodos , Humanos , Navegación de Pacientes/métodos , Navegación de Pacientes/normas , República de Corea/etnología , Apoyo Social
19.
Maxillofac Plast Reconstr Surg ; 46(1): 24, 2024 Jul 08.
Artículo en Inglés | MEDLINE | ID: mdl-38976106

RESUMEN

BACKGROUND: The management of internal derangement (ID) of the TMJ is challenging because of multiple etiologic factors and varying degrees of severity. The aim of this study was to evaluate the clinical outcomes of patients with unilateral ID treated with arthrocentesis and stabilization splint therapy during a 6-month period. METHODS: A total of 105 patients (87 females, 18 males) with unilateral ID were included in this study. Patients were divided into unilateral anterior disc displacement with reduction (ADDwR) and unilateral anterior disc displacement without reduction (ADDwoR). Patients with ADDwoR were subdivided according to the erosive bone changes. Objective parameters on mandibular movement and subjective parameters on pain were obtained and assessed. Their clinical outcomes before and after arthrocentesis and stabilization splint therapy were compared with the chi-square, Fisher's exact test, paired t-test, or Wilcoxon singed-rank test. RESULTS: All objective parameters of unilateral ID patients significantly increased at the 6-month follow-up. The differences in mean visual analog scale (VAS) pain scores were statistically significant in all subjective variables (p < 0.01). In joints with ADDwoR, preoperative maximal mouth opening, and maximal protrusive movement in both groups, with erosive and non-erosive changes were significantly increased after 6 months (p < 0.01). However, right and left maximal lateral movement increased after treatment in both groups but without significant differences. All VAS pain scores on jaw movement and palpation of associated muscles showed a significant decrease regardless of erosive changes. CONCLUSIONS: The combination of arthrocentesis and subsequent stabilization splint therapy was shown to be highly effective in pain reduction and improvement of mandibular movements in both unilateral ADDwR and ADDwoR, as well as in cases with both erosive and non-erosive bony changes associated with unilateral ADDwoR.

20.
J Cancer Educ ; 28(2): 325-34, 2013 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-23536194

RESUMEN

Native Hawaiians and Filipinos are disproportionately impacted by cancer and are less likely to participate in cancer screening than whites. Limited information exists about health information pathways and health communication challenges as they relate to cancer screening in these groups. Six focus groups (n=77) of Native Hawaiian and Filipino women age 40+years were conducted to investigate these research gaps. Participants noted many health information challenges. Challenges were both practical and interpersonal and included both written and oral health communication. Practical challenges included "big" words, complexity of terms, and lack of plain English. Interpersonal issues included doctors rushing, doctors not assessing comprehension, and doctors treating respondents as patients not people. Women noted that they would often not ask questions even when they knew they did not understand because they did not want the provider to think negatively of them. Overarching themes to improve cancer communication gaps included: (1) the importance of family and community in health information dissemination, (2) the key role women play in interpreting health information for others, (3) the importance of personal experience and relationships to the salience of health information, and (4) the desire for local cultural relevance in health communication. Findings are discussed in light of the 2010 National Action Plan for Health Literacy.


Asunto(s)
Asiático , Barreras de Comunicación , Alfabetización en Salud , Neoplasias/etnología , Neoplasias/prevención & control , Población Rural , Adulto , Comprensión , Femenino , Grupos Focales , Hawaii , Educación en Salud , Accesibilidad a los Servicios de Salud , Humanos , Difusión de la Información , Tamizaje Masivo , Filipinas/etnología
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