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1.
Diabetes Obes Metab ; 26 Suppl 1: 14-29, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38328815

RESUMO

Integrated personalized diabetes management (IPDM) has emerged as a promising approach to improving outcomes in patients with diabetes mellitus (DM). This care approach emphasizes the integration and coordination of different providers, including physicians, nurses, dietitians, social workers and pharmacists. The goal of IPDM is to provide patients with personalized care that is tailored to their needs. This review addresses the concept of integrated care and the use of technology (including data, software applications and artificial intelligence) as well as managerial, regulatory and financial aspects. The implementation and upscaling of digitally enabled IPDM are discussed, with elaboration of successful practices and related evidence. Finally, recommendations are made. It is concluded that the adoption of digitally enabled IPDM on a global level is inevitable, considering the challenges created by an increasing prevalence of patients with DM and the need for better outcomes and improvement of health system sustainability.


Assuntos
Inteligência Artificial , Diabetes Mellitus , Humanos , Diabetes Mellitus/terapia
2.
Eur J Gen Pract ; 29(1): 2241987, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37615720

RESUMO

BACKGROUND: eHealth offers opportunities to improve health and healthcare systems and overcome primary care challenges in low-resource settings (LRS). LRS has been typically associated with low- and middle-income countries (LMIC), but they can be found in high-income countries (HIC) when human, physical or financial resources are constrained. Adopting a concept of LRS that applies to LMIC and HIC can facilitate knowledge interchange between eHealth initiatives while improving healthcare provision for socioeconomically disadvantaged groups across the globe. OBJECTIVES: To outline the contributions and challenges of eHealth in low-resource primary care settings. STRATEGY: We adopt a socio-ecological understanding of LRS, making LRS relevant to LMIC and HIC. To assess the potential of eHealth in primary care settings, we discuss four case studies according to the WHO 'building blocks for strengthening healthcare systems'. RESULTS AND DISCUSSION: The case studies illustrate eHealth's potential to improve the provision of healthcare by i) improving the delivery of healthcare (using AI-generated chats); ii) supporting the workforce (using telemedicine platforms); iii) strengthening the healthcare information system (through patient-centred healthcare information systems), and iv) improving system-related elements of healthcare (through a mobile health financing platform). Nevertheless, we found that development and implementation are hindered by user-related, technical, financial, regulatory and evaluation challenges. We formulated six recommendations to help anticipate or overcome these challenges: 1) evaluate eHealth's appropriateness, 2) know the end users, 3) establish evaluation methods, 4) prioritise the human component, 5) profit from collaborations, ensure sustainable financing and local ownership, 6) and contextualise and evaluate the implementation strategies.


Assuntos
Telemedicina , Humanos , Instalações de Saúde , Exame Físico , Atenção Primária à Saúde
3.
J Med Internet Res ; 25: e39250, 2023 03 14.
Artigo em Inglês | MEDLINE | ID: mdl-36917145

RESUMO

BACKGROUND: Worldwide, insomnia remains a highly prevalent public health problem. eHealth presents a novel opportunity to deliver effective, accessible, and affordable insomnia treatments on a population-wide scale. However, there is no quantitative integration of evidence regarding the effectiveness of eHealth-based psychosocial interventions on insomnia. OBJECTIVE: We aimed to evaluate the effectiveness of eHealth-based psychosocial interventions for insomnia and investigate the influence of specific study characteristics and intervention features on these effects. METHODS: We searched PubMed, Embase, Web of Science, PsycINFO, and the Cochrane Central Register of Controlled Trials from database inception to February 16, 2021, for publications investigating eHealth-based psychosocial interventions targeting insomnia and updated the search of PubMed to December 6, 2021. We also screened gray literature for unpublished data. Eligible studies were randomized controlled trials of eHealth-based psychosocial interventions targeting adults with insomnia. Random-effects meta-analysis models were used to assess primary and secondary outcomes. Primary outcomes were insomnia severity and sleep quality. Meta-analyses were performed by pooling the effects of eHealth-based psychosocial interventions on insomnia compared with inactive and in-person conditions. We performed subgroup analyses and metaregressions to explore specific factors that affected the effectiveness. Secondary outcomes included sleep diary parameters and mental health-related outcomes. RESULTS: Of the 19,980 identified records, 37 randomized controlled trials (13,227 participants) were included. eHealth-based psychosocial interventions significantly reduced insomnia severity (Hedges g=-1.01, 95% CI -1.12 to -0.89; P<.001) and improved sleep quality (Hedges g=-0.58, 95% CI -0.75 to -0.41; P<.001) compared with inactive control conditions, with no evidence of publication bias. We found no significant difference compared with in-person treatment in alleviating insomnia severity (Hedges g=0.41, 95% CI -0.02 to 0.85; P=.06) and a significant advantage for in-person treatment in enhancing sleep quality (Hedges g=0.56, 95% CI 0.24-0.88; P<.001). eHealth-based psychosocial interventions had significantly larger effects (P=.01) on alleviating insomnia severity in clinical samples than in subclinical samples. eHealth-based psychosocial interventions that incorporated guidance from trained therapists had a significantly greater effect on insomnia severity (P=.05) and sleep quality (P=.02) than those with guidance from animated therapists or no guidance. Higher baseline insomnia severity and longer intervention duration were associated with a larger reduction in insomnia severity (P=.004). eHealth-based psychosocial interventions significantly improved each secondary outcome. CONCLUSIONS: eHealth interventions for insomnia are effective in improving sleep and mental health and can be considered a promising treatment for insomnia. Our findings support the wider dissemination of eHealth interventions and their further promotion in a stepped-care model. Offering blended care could improve treatment effectiveness. Future research needs to elucidate which specific intervention components are most important to achieve intervention effectiveness. Blended eHealth interventions may be tailored to benefit people with low socioeconomic status, limited access to health care, or lack of eHealth literacy.


Assuntos
Distúrbios do Início e da Manutenção do Sono , Telemedicina , Humanos , Adulto , Distúrbios do Início e da Manutenção do Sono/terapia , Intervenção Psicossocial , Ensaios Clínicos Controlados Aleatórios como Assunto , Saúde Mental
4.
Aging Clin Exp Res ; 33(10): 2899-2907, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34319512

RESUMO

BACKGROUND: Policies to combat the COVID-19 pandemic have disrupted the screening, diagnosis, treatment, and monitoring of noncommunicable (NCD) patients while affecting NCD prevention and risk factor control. AIMS: To discuss how the first wave of the COVID-19 pandemic affected the health management of NCD patients, identify which aspects should be carried forward into future NCD management, and propose collaborative efforts among public-private institutions to effectively shape NCD care models. METHODS: The NCD Partnership, a collaboration between Upjohn and the European Innovation Partnership on Active and Healthy Ageing, held a virtual Advisory Board in July 2020 with multiple stakeholders; healthcare professionals (HCPs), policymakers, researchers, patient and informal carer advocacy groups, patient empowerment organizations, and industry experts. RESULTS: The Advisory Board identified barriers to NCD care during the COVID-19 pandemic in four areas: lack of NCD management guidelines; disruption to integrated care and shift from hospital-based NCD care to more community and primary level care; infodemics and a lack of reliable health information for patients and HCPs on how to manage NCDs; lack of availability, training, standardization, and regulation of digital health tools. CONCLUSIONS: Multistakeholder partnerships can promote swift changes to NCD prevention and patient care. Intra- and inter-communication between all stakeholders should be facilitated involving all players in the development of clinical guidelines and digital health tools, health and social care restructuring, and patient support in the short-, medium- and long-term future. A comprehensive response to NCDs should be delivered to improve patient outcomes by providing strategic, scientific, and economic support.


Assuntos
COVID-19 , Doenças não Transmissíveis , Cuidadores , Humanos , Doenças não Transmissíveis/epidemiologia , Doenças não Transmissíveis/prevenção & controle , Pandemias/prevenção & controle , SARS-CoV-2
7.
Eur Psychiatry ; 53: 107-115, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-30036773

RESUMO

BACKGROUND: The aim of the European Brain Council project "The Value of Treatment" was to provide evidence-based, cost-effective policy recommendations for a patient-centered and sustainable coordinated care model for brain disorders. The first part of schizophrenia study examined the needs and gaps in the patients' care pathway. METHODS: Descriptive analysis was based on an inventory of needs and treatment opportunities, using focus group sessions, expert interviews, users' input, and literature review. Three patient pathways were selected: indicated prevention, duration of untreated psychosis, and relapse prevention. RESULTS: The analysis identified several critical barriers to optimal treatment. Available health care services often miss or delay detection of symptoms and diagnosis in at-risk individuals. There is a lack of illness awareness among patients, families, and the public; scarcity of information, training and education among primary care providers; stigmatizing beliefs. Early symptom recognition and timely intervention result in better outcome and prognosis; effective management leads to a functional recovery. In the current model of care, there is insufficient cooperation between health and social care providers, patients and families, inadequate utilization of pharmacological and psychosocial interventions, lacking patient monitoring, and low implementation of integrated community care. CONCLUSIONS: Early detection and early intervention programs, timely intervention, and relapse prevention are essential for effective management of schizophrenia. It requires a paradigm shift from symptom control, achieving and maintaining remission, to the emphasis on recovery. Since the current services are not able to accomplish this goal, changes in mental health policies are needed.


Assuntos
Acessibilidade aos Serviços de Saúde , Serviços de Saúde Mental , Transtornos Psicóticos/terapia , Esquizofrenia/terapia , Diagnóstico Precoce , Medicina Baseada em Evidências , Humanos , Prognóstico , Transtornos Psicóticos/diagnóstico , Esquizofrenia/diagnóstico , Prevenção Secundária
8.
Int J Care Coord ; 20(1-2): 26-40, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28690856

RESUMO

INTRODUCTION: Integrated Care Pathways (ICPs) are a method for the mutual decision-making and organization of care for a well-defined group of patients during a well-defined period. The aim of a care pathway is to enhance the quality of care by improving patient outcomes, promoting patient safety, increasing patient satisfaction, and optimizing the use of resources. To describe this concept, different names are used, e.g. care pathways and integrated care pathways. Modern information technologies (IT) can support ICPs by enabling patient empowerment, better management, and the monitoring of care provided by multidisciplinary teams. This study analyses ICPs across Europe, identifying commonalities and success factors to establish good practices for IT-supported ICPs in diabetes care. METHODS: A mixed-method approach was applied, combining desk research on 24 projects from the European Innovation Partnership on Active and Healthy Ageing (EIP on AHA) with follow-up interviews of project participants, and a non-systematic literature review. We applied a Delphi technique to select process and outcome indicators, derived from different literature sources which were compiled and applied for the identification of successful good practices. RESULTS: Desk research identified sixteen projects featuring IT-supported ICPs, mostly derived from the EIP on AHA, as good practices based on our criteria. Follow-up interviews were then conducted with representatives from 9 of the 16 projects to gather information not publicly available and understand how these projects were meeting the identified criteria. In parallel, the non-systematic literature review of 434 PubMed search results revealed a total of eight relevant projects. On the basis of the selected EIP on AHA project data and non-systematic literature review, no commonalities with regard to defined process or outcome indicators could be identified through our approach. Conversely, the research produced a heterogeneous picture in all aspects of the projects' indicators. Data from desk research and follow-up interviews partly lacked information on outcome and performance, which limited the comparison between practices. CONCLUSION: Applying a comprehensive set of indicators in a multi-method approach to assess the projects included in this research study did not reveal any obvious commonalities which might serve as a blueprint for future IT-supported ICP projects. Instead, an unexpected high degree of heterogeneity was observed, that may reflect diverse local implementation requirements e.g. specificities of the local healthcare system, local regulations, or preexisting structures used for the project setup. Improving the definition of and reporting on project outcomes could help advance research on and implementation of effective integrated care solutions for chronic disease management across Europe.

10.
J Biomed Inform ; 61: 132-40, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-27018213

RESUMO

BACKGROUND: Recent Cochrane reviews on falls and fall prevention have shown that it is possible to prevent falls in older adults living in the community and in care facilities. Technologies aimed at fall detection, assessment, prediction and prevention are emerging, yet there has been no consistency in describing or reporting on interventions using technologies. With the growth of eHealth and data driven interventions, a common language and classification is required. OBJECTIVE: The FARSEEING Taxonomy of Technologies was developed as a tool for those in the field of biomedical informatics to classify and characterise components of studies and interventions. METHODS: The Taxonomy Development Group (TDG) comprised experts from across Europe. Through face-to-face meetings and contributions via email, five domains were developed, modified and agreed: Approach; Base; Components of outcome measures; Descriptors of technologies; and Evaluation. Each domain included sub-domains and categories with accompanying definitions. The classification system was tested against published papers and further amendments undertaken, including development of an online tool. Six papers were classified by the TDG with levels of consensus recorded. RESULTS: Testing the taxonomy with papers highlighted difficulties in definitions across international healthcare systems, together with differences of TDG members' backgrounds. Definitions were clarified and amended accordingly, but some difficulties remained. The taxonomy and manual were large documents leading to a lengthy classification process. The development of the online application enabled a much simpler classification process, as categories and definitions appeared only when relevant. Overall consensus for the classified papers was 70.66%. Consensus scores increased as modifications were made to the taxonomy. CONCLUSION: The FARSEEING Taxonomy of Technologies presents a common language, which should now be adopted in the field of biomedical informatics. In developing the taxonomy as an online tool, it has become possible to continue to develop and modify the classification system to incorporate new technologies and interventions.


Assuntos
Acidentes por Quedas/prevenção & controle , Atenção à Saúde , Informática Médica/normas , Europa (Continente) , Humanos , Internet , Telemedicina , Terminologia como Assunto
11.
J Foot Ankle Res ; 7: 33, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25075224

RESUMO

BACKGROUND: Hallux valgus deformity is a common musculoskeletal foot disorder with a prevalence of 3.5% in adolescents to 35.7% in adults aged over 65 years. Radiographic measurements of hallux valgus angles (HVA) are considered to be the most reproducible and accurate assessment of HVA. However, in European countries, many podiatrists do not have direct access to radiographic facilities. Therefore, alternative measurements are desired. Such measurements are computerised plantar pressure measurement and clinical goniometry. The purpose of this study was to establish the agreement of these techniques and radiographic assessments. METHODS: HVA was determined in one hundred and eighty six participants suffering from diabetes. Radiographic measurements of HVA were performed with standardised static weight bearing dorsoplantar foot radiographs. The clinical goniometry for HVA was measured with a universal goniometer. Computerised plantar pressure measurement for HVA was executed with the EMED SF-4® pressure platform and Novel-Ortho-Geometry software. The intra-class correlation coefficients (ICC) and levels of agreement were analysed using Bland & Altman plots. RESULTS: Comparison of radiographic measurements to clinical goniometry for HVA showed an intraclass correlation coefficient (ICC) of 0.81 (95% confidence interval, 0.76 to 0.86; p<0.001). Radiographic measurement versus computerised plantar pressure measurement showed an ICC of 0.59 (95% confidence interval, 0.49 to 0.68; p<0.001). In addition, clinical goniometry versus computerised plantar pressure measurement showed an ICC of 0.77 (95% confidence interval, 0.70 to 0.82; p<0.001). The systematic difference of the computerised plantar pressure measurement compared with radiographic measurement and clinical goniometry was 7.0 degrees (SD 6.8) and 5.2 degrees (SD 5.0), respectively. The systemic difference of radiographic measurements compared with clinical goniometry was 1.8 degrees (SD 5.0). CONCLUSIONS: The agreement of computerised plantar pressure measurement and clinical goniometry for HVA compared to radiographic measurement of HVA is unsatisfactory. Radiographic measurements of HVA and clinical goniometry for HVA yield better agreement compared to radiographic measurements and computerised plantar pressure measurement. The traditional radiographic measurement techniques are strongly recommended for the assessment of HVA.

12.
BMC Musculoskelet Disord ; 13: 135, 2012 Jul 30.
Artigo em Inglês | MEDLINE | ID: mdl-22846646

RESUMO

BACKGROUND: Few studies have investigated the use of a 3-dimensional gyroscope for measuring the range of motion (ROM) in the impaired shoulder. Reproducibility of digital inclinometer and visual estimation is poor. This study aims to investigate the reproducibility of a tri axial gyroscope in measurement of anteflexion, abduction and related rotations in the impaired shoulder. METHODS: Fifty-eight patients with either subacromial impingement (27) or osteoarthritis of the shoulder (31) participated. Active anteflexion, abduction and related rotations were measured with a tri axial gyroscope according to a test retest protocol. Severity of shoulder impairment and patient perceived pain were assessed by the Disability of Arm Shoulder and Hand score (DASH) and the Visual Analogue Scale (VAS). VAS scores were recorded before and after testing. RESULTS: In two out of three hospitals patients with osteoarthritis (n = 31) were measured, in the third hospital patients with subacromial impingement (n = 27).There were significant differences among hospitals for the VAS and DASH scores measured before and after testing. The mean differences between the test and retest means for anteflexion were -6 degrees (affected side), 9 (contralateral side) and for abduction 15 degrees (affected side) and 10 degrees (contralateral side).Bland & Altman plots showed that the confidence intervals for the mean differences fall within -6 up to 15 degrees, individual test - retest differences could exceed these limits.A simulation according to 'Generalizability Theory' produces very good coefficients for anteflexion and related rotation as a comprehensive measure of reproducibility. Optimal reproducibility is achieved with 2 repetitions for anteflexion. CONCLUSIONS: Measurements were influenced by patient perceived pain. Differences in VAS and DASH might be explained by different underlying pathology. These differences in shoulder pathology however did not alter the reproducibility of testing. The use of a tri axial gyroscope is a simple non invasive and reproducible method for the recording of shoulder anteflexion and abduction. Movements have to be repeated twice for reproducible results.


Assuntos
Osteoartrite/diagnóstico , Exame Físico/instrumentação , Síndrome de Colisão do Ombro/diagnóstico , Articulação do Ombro/fisiopatologia , Adulto , Idoso , Análise de Variância , Fenômenos Biomecânicos , Avaliação da Deficiência , Desenho de Equipamento , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Países Baixos , Osteoartrite/fisiopatologia , Medição da Dor , Valor Preditivo dos Testes , Amplitude de Movimento Articular , Reprodutibilidade dos Testes , Índice de Gravidade de Doença , Síndrome de Colisão do Ombro/fisiopatologia , Dor de Ombro/diagnóstico , Dor de Ombro/fisiopatologia
13.
BMC Public Health ; 10: 212, 2010 Apr 27.
Artigo em Inglês | MEDLINE | ID: mdl-20423469

RESUMO

BACKGROUND: Hip fracture patients often have an impaired nutritional status at the time of fracture, which can result in a higher complication rate, prolonged rehabilitation time and increased mortality. A study was designed to evaluate the effect of nutritional intervention on nutritional status, functional status, total length of stay, postoperative complications and cost-effectiveness. METHODS: Open-labelled, multi-centre, randomized controlled trial in hip fracture patients aged 55 years and above. The intervention group receives dietetic counselling (by regular home visits and telephone calls) and oral nutritional supplementation for three months after surgery. The control group receives usual dietetic care as provided by the hospital. Outcome assessment is performed at three and six months after hip fracture. DISCUSSION: Patient recruitment has started in July 2007 and has ended in December 2009. First results are expected in 2011. TRIAL REGISTRATION: ClinicalTrials.gov NCT00523575.


Assuntos
Dietética , Fraturas do Quadril/dietoterapia , Idoso , Idoso de 80 Anos ou mais , Análise Custo-Benefício , Aconselhamento , Interpretação Estatística de Dados , Suplementos Nutricionais , Dietética/economia , Feminino , Fraturas do Quadril/economia , Fraturas do Quadril/reabilitação , Humanos , Masculino , Pessoa de Meia-Idade , Países Baixos , Estado Nutricional , Cuidados Pós-Operatórios
14.
J Biomed Mater Res A ; 89(2): 444-52, 2009 May.
Artigo em Inglês | MEDLINE | ID: mdl-18431789

RESUMO

The aim of our study was to compare the healing response of biomechanically and biochemically different scaffolds in osteochondral defects created in rabbit medial femoral condyles. A block copolymer comprised of poly(ethylene oxide terephthalate) and poly(butylene terephthalate) was used to prepare porous scaffolds. The 70/30 scaffold (70 wt % poly(ethylene oxide terephthalate)) was compared to the stiffer 55/45 (55 wt % poly(ethylene oxide terephthalate)) scaffold. Nine 6-month-old rabbits were used. Osteochondral defects were filled with 55/45 scaffolds (n = 6); 70/30 scaffolds (n = 6); or left empty (n = 6). Defect sites were allowed to heal for 12 weeks. Condyles were macroscopically evaluated and analysed histologically using the O'Driscoll score for evaluating repair of osteochondral defects. Repair tissue in 70/30 scaffolds consisted of cartilage-like tissue on top of trabecular bone, whereas the tissue within the 55/45 scaffolds consisted predominantly of trabecular bone. O'Driscoll scores for 70/30 scaffolds were significantly better (p = 0.024) in comparison to untreated osteochondral defects and 55/45 scaffolds. This study reveals that the biomechanical and biochemical properties of the scaffold play an important role by themselves, and can affect the healing response of osteochondral defects. Scaffolds with low mechanical properties were superior in cartilage repair tissue formation.


Assuntos
Cartilagem Articular/patologia , Condrogênese/efeitos dos fármacos , Teste de Materiais , Fenômenos Mecânicos/efeitos dos fármacos , Poliésteres/farmacologia , Polietilenoglicóis/farmacologia , Alicerces Teciduais , Cicatrização/efeitos dos fármacos , Animais , Cartilagem Articular/efeitos dos fármacos , Fêmur/efeitos dos fármacos , Fêmur/patologia , Membro Posterior/patologia , Coelhos
15.
BMC Endocr Disord ; 8: 16, 2008 Dec 02.
Artigo em Inglês | MEDLINE | ID: mdl-19055706

RESUMO

BACKGROUND: Various structural and functional factors of foot function have been associated with high local plantar pressures. The therapist focuses on these features which are thought to be responsible for plantar ulceration in patients with diabetes. Risk assessment of the diabetic foot would be made easier if locally elevated plantar pressure could be indicated with a minimum set of clinical measures. METHODS: Ninety three patients were evaluated through vascular, orthopaedic, neurological and radiological assessment. A pressure platform was used to quantify the barefoot peak pressure for six forefoot regions: big toe (BT) and metatarsals one (MT-1) to five (MT-5). Stepwise regression modelling was performed to determine which set of the clinical and radiological measures explained most variability in local barefoot plantar peak pressure in each of the six forefoot regions. Comprehensive models were computed with independent variables from the clinical and radiological measurements. The difference between the actual plantar pressure and the predicted value was examined through Bland-Altman analysis. RESULTS: Forefoot pressures were significant higher in patients with neuropathy, compared to patients without neuropathy for the whole forefoot, the MT-1 region and the MT-5 region (respectively 138 kPa, 173 kPa and 88 kPa higher: mean difference). The clinical models explained up to 39 percent of the variance in local peak pressures. Callus formation and toe deformity were identified as relevant clinical predictors for all forefoot regions. Regression models with radiological variables explained about 26 percent of the variance in local peak pressures. For most regions the combination of clinical and radiological variables resulted in a higher explained variance. The Bland and Altman analysis showed a major discrepancy between the predicted and the actual peak pressure values. CONCLUSION: At best, clinical and radiological measurements could only explain about 34 percent of the variance in local barefoot peak pressure in this population of diabetic patients. The prediction models constructed with linear regression are not useful in clinical practice because of considerable underestimation of high plantar pressure values. Identification of elevated plantar pressure without equipment for quantification of plantar pressure is inadequate. The use of quantitative plantar pressure measurement for diabetic foot screening is therefore advocated.

16.
J Tissue Eng Regen Med ; 2(6): 331-9, 2008 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-18615820

RESUMO

The aim of this study was to establish the potential of human periosteum-derived cells from elderly patients as a cell source for cartilage tissue engineering by optimizing culture conditions for both proliferation and differentiation. Periosteum was obtained from the tibiae of nine patients. Biopsies were prepared for routine histological examination. Periosteum-derived cells were allowed to grow out from the remaining tissue, and were expanded in minimum essential medium containing D-valine (MEM-DV). Fetal bovine serum (FBS) or substitutes, fibroblast growth factor-2 (FGF-2), insulin-like growth factor-1 (IGF-1) and non-essential amino acids were added to study proliferation. For differentiation of cells, serum-free medium was used supplemented with one or more isoforms of transforming growth factor-beta (TGFbeta) and/or IGF-1. Samples were analysed for expression of collagens type I, II and X by competitive RT-PCR, immunohistochemically, and histologically using Alcian blue staining. In all samples the cambium layer could hardly be detected. Periosteum-derived cells proliferated in serum-containing MEM-DV. Optimal proliferation was found when this medium was supplemented with 100 ng/ml FGF-2 and non-essential amino acids. Chondrogenesis was detected in 59% of micromasses that were cultured with TGFbeta isomers, and in 83% of the samples cultured in media to which two TGFbeta isoforms were added. Periosteum from elderly humans (mean age 66, range 41-76 years) has chondrogenic potential and remains an attractive cell source for cartilage tissue engineering. By expanding cells in MEM-DV, the selection of progenitor cells might be favoured, which would result in a higher cartilage yield for tissue engineering applications.


Assuntos
Cartilagem/citologia , Técnicas de Cultura de Células/métodos , Separação Celular/métodos , Periósteo/citologia , Engenharia Tecidual , Adulto , Idoso , Biomarcadores , Cartilagem/metabolismo , Proliferação de Células , Células Cultivadas , Condrogênese , Feminino , Humanos , Pessoa de Meia-Idade , Periósteo/metabolismo
17.
J Orthop Res ; 26(5): 624-30, 2008 May.
Artigo em Inglês | MEDLINE | ID: mdl-18176946

RESUMO

The purpose of this study was to determine the effect of one intra-articular injection of hyaluronan on chondrocyte death and metabolism in injured cartilage. Twenty-three 6-month-old rabbits received partial-thickness articular cartilage defects created on each medial femoral condyle. In order to examine the effect on articular cartilage surrounding iatrogenic cartilage lesions, which can occur during arthroscopic procedures, Study 1 was performed: in 14 rabbits both knees were immediately rinsed with 0.9% NaCl. Experimental knees were treated with hyaluronan. Six rabbits were sacrificed at 2 days; eight rabbits 3 months postoperatively. Histomorphometric analysis was used for studying cell death in cartilage next to the defect. In order to examine the effect on longer lasting lesions, more reflecting the clinical situation, Study 2 was performed: after 6 months knee joints of nine rabbits were (i) irrigated with 0.9% NaCl, (ii) treated with hyaluronan after irrigation with 0.9% NaCl, or (iii) sham-treated. After 7 days patellas were used to study the chondrocyte metabolism by measuring the [(35)S]sulfate incorporation. Study 1: Two days postoperatively, in hyaluronan-treated cartilage the percentage of dead cells was 6.7%, which was significantly lower compared to 16.2% in saline-treated cartilage. After 3 months the percentages of dead cells in both groups were statistically similar. Study 2: Hyaluronan treatment resulted in significantly higher [(35)S]sulfate incorporation compared to knees irrigated with 0.9% NaCl. These results suggest a potential role for hyaluronan in preventing cell death following articular cartilage injury. One injection of hyaluronan improved cartilage metabolism in knees with 6-month-old cartilage defects.


Assuntos
Cartilagem Articular/lesões , Condrócitos/efeitos dos fármacos , Ácido Hialurônico/farmacologia , Articulação do Joelho/metabolismo , Animais , Artroscopia/efeitos adversos , Cartilagem Articular/efeitos dos fármacos , Cartilagem Articular/patologia , Morte Celular/efeitos dos fármacos , Condrócitos/metabolismo , Feminino , Ácido Hialurônico/administração & dosagem , Injeções Intra-Articulares , Articulação do Joelho/efeitos dos fármacos , Articulação do Joelho/patologia , Coelhos
18.
Diabetes Res Clin Pract ; 77(2): 203-9, 2007 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-17187891

RESUMO

OBJECTIVE: To assess differences regarding in-shoe forefoot plantar pressure (PP) in patients with diabetes during various daily-life activities. RESEARCH DESIGN AND METHODS: In-shoe PP was measured in 93 patients during: level walking, ramp and stair walking, turning in different settings and while performing the Up & Go test. Separate PPs were determined for the big toe and metatarsal (mt) regions one to five. RESULTS: Across all activities, similar PPs were measured in the big toe and mt-1 to mt-3 region. Lower PPs were measured in mt-4 and mt-5 region. PPs during level walking were mostly higher when compared to the other activities (p

Assuntos
Atividades Cotidianas , Diabetes Mellitus Tipo 1/reabilitação , Diabetes Mellitus Tipo 2/reabilitação , , Antepé Humano/fisiopatologia , Sapatos/normas , Caminhada/fisiologia , Adulto , Idoso , Índice de Massa Corporal , Diabetes Mellitus Tipo 1/fisiopatologia , Diabetes Mellitus Tipo 2/fisiopatologia , Feminino , Hemoglobinas Glicadas/análise , Humanos , Masculino , Pessoa de Meia-Idade , Percepção , Postura , Pressão , Vibração
19.
BMC Musculoskelet Disord ; 7: 93, 2006 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-17140435

RESUMO

BACKGROUND: Identification of locations with elevated plantar pressures is important in daily foot care for patients with rheumatoid arthritis, metatarsalgia and diabetes. The purpose of the present study was to evaluate the proficiency of podiatrists, pedorthists and orthotists, to distinguish locations with elevated plantar pressure in patients with metatarsalgia. METHODS: Ten podiatrists, ten pedorthists and ten orthotists working in The Netherlands were asked to identify locations with excessively high plantar pressure in three patients with forefoot complaints. Therapists were instructed to examine the patients according to the methods used in their everyday clinical practice. Regions could be marked through hatching an illustration of a plantar aspect. A pressure sensitive platform was used to quantify the dynamic bare foot plantar pressures and was considered as 'Gold Standard' (GS). A pressure higher than 700 kPa was used as cut-off criterion for categorizing peak pressure into elevated or non-elevated pressure. This was done for both patient's feet and six separate forefoot regions: big toe and metatarsal one to five. Data were analysed by a mixed-model ANOVA and Generalizability Theory. RESULTS: The proportions elevated/non-elevated pressure regions, based on clinical ratings of the therapists, show important discrepancies with the criterion values obtained through quantitative plantar pressure measurement. In general, plantar pressures in the big toe region were underrated and those in the metatarsal regions were overrated. The estimated method agreement on clinical judgement of plantar pressures with the GS was below an acceptable level: i.e. all intraclass correlation coefficient's equal or smaller than .60. The inter-observer agreement for each discipline demonstrated worrisome results: all below .18. The estimated mutual agreements showed that there was virtually no mutual agreement between the professional groups studied. CONCLUSION: Identification of elevated plantar pressure through clinical evaluation is difficult, insufficient and may be potentially harmful. The process of clinical plantar pressure screening has to be re-evaluated. The results of this study point towards the merit of quantitative plantar pressure measurement for clinical practice.


Assuntos
Competência Clínica , Antepé Humano/fisiopatologia , Ocupações em Saúde/normas , Metatarsalgia/diagnóstico , Metatarsalgia/fisiopatologia , Podiatria/métodos , Podiatria/normas , Adulto , Feminino , Humanos , Masculino , Metatarsalgia/terapia , Pessoa de Meia-Idade , Aparelhos Ortopédicos , Pressão
20.
J Am Podiatr Med Assoc ; 96(1): 9-18, 2006.
Artigo em Inglês | MEDLINE | ID: mdl-16415278

RESUMO

Foot orthoses are widely used to treat various foot problems. A literature search revealed no publications on differences in plantar pressure distribution resulting from casting methods for foot orthoses. Four casting methods were used for construction of orthoses. Two foam box techniques were used: accommodative full weightbearing method (A) and functional semiweightbearing method (B). Also, two suspension plaster casting techniques were used: accommodative casting (C) and functional subtalar joint neutral position (Root) method (D). Their effects on contact area, plantar pressure, and walking convenience were evaluated. All orthoses increased the total contact area (mean, 17.4%) compared with shoes without orthoses. Differences in contact areas between orthoses for total plantar surface were statistically significant. Peak pressures for the total plantar surface were lower with orthoses than without orthoses (mean, 22.8%). Among orthoses, only the difference between orthoses A and B was statistically significant. Differences between orthoses for the forefoot were small and not statistically significant. The gait lines of the shoe without an insole and of the accommodative orthoses are more medially located than those of functional orthoses. Walking convenience in the shoe was better rated than that with orthoses. There were no differences in perception of walking convenience between orthoses A, B, and C. Orthosis D had the lowest convenience rating. The four casting methods resulted in differences between orthoses with respect to contact areas and walking convenience but only slight differences in peak pressures.


Assuntos
Moldes Cirúrgicos , Pé/fisiologia , Aparelhos Ortopédicos , Pressão , Adulto , Desenho de Equipamento , Feminino , Humanos , Pessoa de Meia-Idade , Sapatos , Caminhada/fisiologia
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