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- Kloss, Frank, et al.
(författare)
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The role of oxygen termination of nanocrystalline diamond on immobilisation of BMP-2 and subsequent bone formation
- 2008
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Ingår i: Biomaterials. - : Elsevier BV. - 0142-9612 .- 1878-5905. ; 29:16, s. 2433-2442
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Tidskriftsartikel (refereegranskat)abstract
- Medical implants are increasingly often inserted into bone of frail patients, who are advanced in years. Due to age, severe trauma or pathology-related bone changes, osseous healing at the implant site is frequently limited. We were able to demonstrate that coating of endosseous implants with nanocrystalline diamond (NCD) allows stable functionalization by means of physisorption with BMP-2. Strong physisorption was shown to be directly related to the unique properties of NCD, and BMP-2 in its active form interacted strongly when NCD was oxygen-terminated. The binding of the protein was monitored under physiological conditions by single molecule force spectroscopy, and the respective adsorption energies were further substantiated by force-field-calculations. Implant surfaces refined in such a manner yielded enhanced osseointegration in vivo, when inserted into sheep calvaria. Our results further suggest that this technical advancement can be readily applied in clinical therapies with regard to bone healing, since primary human mesenchymal stromal cells strongly activated the expression of osteogenic markers when being cultivated on NCD physisorbed with physiological amounts of BMP-2.
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| 2. |
- Jaarsma, Tiny, et al.
(författare)
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Comparison of self-care behaviors of heart failure patients in 15 countries worldwide
- 2013
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Ingår i: Patient Education and Counseling. - : Elsevier. - 0738-3991 .- 1873-5134. ; 92:1, s. 114-120
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Tidskriftsartikel (refereegranskat)abstract
- ObjectiveClinicians worldwide seek to educate and support heart failure patients to engage in self-care. We aimed to describe self-care behaviors of patients from 15 countries across three continents.MethodsData on self-care were pooled from 5964 heart failure patients from the United States, Europe, Australasia and South America. Data on self-care were collected with the Self-care of Heart Failure Index or the European Heart Failure Self-care Behavior Scale.ResultsIn all the samples, most patients reported taking their medications as prescribed but exercise and weight monitoring were low. In 14 of the 22 samples, more than 50% of the patients reported low exercise levels. In 16 samples, less than half of the patients weighed themselves regularly, with large differences among the countries. Self-care with regard to receiving an annual flu shot and following a low sodium diet varied most across the countries.ConclusionSelf-care behaviors are sub-optimal in heart failure patients and need to be improved worldwide.Practice implicationsInterventions that focus on specific self-care behaviors may be more effective than general educational programs. Changes in some health care systems and national policies are needed to support patients with heart failure to increase their self-care behavior.
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