Nowotny J.,University Clinic Dresden |
Nowotny J.,Center for Translational Bone |
Farack J.,Center for Translational Bone |
Vater C.,Center for Translational Bone |
And 4 more authors.
Journal of Applied Biomaterials and Functional Materials | Year: 2016
Purpose: Tissue regeneration can be improved by local application of autologous bone marrow derived progenitor cells (BMSC) and platelet rich plasma (PRP). However, there is a lack of standardized application procedures for clinical use. Therefore, a technique in accordance with the guidelines for advanced therapies medical products of the European Medicine Agency was developed and established. Methods: In detail, a process for the isolation and formulation of autologous bone marrow cells (BMC) and PRP in a clinical setting was validated. To investigate the influence of storage time and temperature on gel formation and gel stability, different concentrations of BMC were stored with and without additional platelets, thrombin and fibrinogen and analyzed over a period of 28 days. In addition, cell vitality using a live-dead staining and migration ability of human mesenchymal stem cells (hMSC) in the gel clot was investigated. Results: For an optimized stable gel clot, human BMC and PRP should be combined with 10% to 20% fibrinogen (9 mg/mL to 18 mg/mL) and 5% to 20% thrombin (25 I.E. to 100 I.E.). Both freshly prepared and stored cells for 1 to 7 days had a stable consistence over 28 days at 37°C. Different platelet concentrations did not influence gel clot formation. The ratio of living cells did not decrease significantly over the observation period of 5 days in the live-dead staining. Conclusions: The study identified an optimal gel texture for local application of BMC and PRP. Seeded hMSC could migrate therein and were able to survive to initiate a healing cascade. © 2015 Wichtig Publishing.
Huttenbrink K.-B.,University of Cologne |
Huttenbrink K.-B.,Universitatsklinikum Cologne |
Hummel T.,University Clinic Dresden |
Berg D.,German Center for Neurodegenerative Diseases |
And 2 more authors.
Deutsches Arzteblatt International | Year: 2013
Background: Disturbances of smell and taste are common. About 5% of the general population have anosmia (absence of the sense of smell). Olfactory dysfunction can markedly impair the quality of life.Methods: Review of pertinent literature retrieved by a selective search.Results: In recent years, simple and reliable tests of the sense of smell have been introduced in otorhinolaryngology. Olfactory testing has become a new focus of attention in neurology as well, mainly because many patients with neurodegenerative diseases-including the majority of those with Parkinson's or Alzheimer's disease-have olfactory loss early on in the course of their disorder. Olfactory dysfunction is thus regarded as an early sign of neuro degenerative disease that may allow a tentative diagnosis to be made years before the motor or cognitive disturbances become evident. As for the treatment of olfactory loss, anti-inflammatory drugs and surgery can help in some cases, and olfactory training can lead to significant improvement of post-viral olfactory deficits.Conclusion: Olfactory dysfunction is common and becomes more common with advancing age. It is increasingly receiving attention as an important sign for the early diagnosis and the differential diagnosis of neurodegenerative disorders.
Dumke R.,TU Dresden |
Schnee C.,Friedrich Loeffer Institute |
Pletz M.W.,Jena University Hospital Center for Infectious Diseases and Infection Control |
Rupp J.,CAPNETZ STIFTUNG |
And 37 more authors.
Emerging Infectious Diseases | Year: 2015
Mycoplasma pneumoniae and Chlamydia spp., which are associated with community-acquired pneumonia (CAP), are diffcult to propagate, and can cause clinically indistinguish able disease patterns. During 2011-2012, we used molecu lar methods to test adult patients in Germany with confrmed CAP for infection with these 2 pathogens. Overall, 12.3% (96/783) of samples were positive for M. pneumoniae and 3.9% (31/794) were positive for Chlamydia spp.; C. psittaci (2.1%) was detected more frequently than C. pneumoniae (1.4%). M. pneumoniae P1 type 1 predominated, and lev els of macrolide resistance were low (3.1%). Quarterly rates of M. pneumoniae-positive samples ranged from 1.5% to 27.3%, showing a strong epidemic peakforthese infections, but of Chlamydia spp. detection was consistent throughout the year. M. pneumoniae-positive patients were younger and more frequently female, had fewer co-occurring condi tions, and experienced milder disease than did patients who tested negative. Clinicians should be aware of the epidemi- ology of these pathogens in CAP. © 2015, Centers for Disease Control and Prevention (CDC). All rights reserved.
Beda A.,University Clinic Dresden |
Beda A.,Federal University of Para |
Guldner A.,University Clinic Dresden |
Simpson D.M.,University of Southampton |
And 6 more authors.
Physiological Measurement | Year: 2012
The physiological importance of respiratory sinus arrhythmia (RSA) and cardioventilatory coupling (CVC) has not yet been fully elucidated, but these phenomena might contribute to improve ventilation/perfusion matching, with beneficial effects on gas exchange. Furthermore, decreased RSA amplitude has been suggested as an indicator of impaired autonomic control and poor clinical outcome, also during positive-pressure mechanical ventilation (MV). However, it is currently unknown how different modes of MV, including variable tidal volumes (V T), affect RSA and CVC during anesthesia. We compared the effects of pressure controlled (PCV) versus pressure assisted (PSV) ventilation, and of random variable versus constant V T, on RSA and CVC in eight anesthetized pigs. At comparable depth of anesthesia, global hemodynamics, and ventilation, RSA amplitude increased from 20 ms in PCV to 50 ms in PSV (p < 0.05). CVC was detected (using proportional Shannon entropy of the interval between each inspiration onset and the previous R-peak in ECG) in two animals in PCV and seven animals in PSV. Variable V T did not significantly influence these phenomena. Furthermore, heart period and systolic arterial pressure oscillations were in phase during PCV but in counter-phase during PSV. At the same depth of anesthesia in pigs, PSV increases RSA amplitude and CVC compared to PCV. Our data suggest that the central respiratory drive, but not the baroreflex or the mechano-electric feedback in the heart, is the main mechanism behind the RSA increase. Hence, differences in RSA and CVC between mechanically ventilated patients might reflect the difference in ventilation mode rather than autonomic impairment. Also, since gas exchange did not increase from PCV to PSV, it is questionable whether RSA has any significance in improving ventilation/perfusion matching during MV. © 2012 Institute of Physics and Engineering in Medicine.
Tsourdi E.,University Clinic Dresden |
Heidrich F.M.,Herzzentrum University Hospital |
Winzer M.,University Clinic Dresden |
Rollig C.,University Clinic Dresden |
And 5 more authors.
American Journal of Case Reports | Year: 2014
Objective: Unusual clinical course Background: Protein-losing enteropathy is a rare cause of hypoproteinemia. Erosive and non-erosive gastrointestinal diseases as well as vascular disorders that result in increased central venous pressure or mesenteric lymphatic obstruction may result in protein loss via the gastrointestinal tract. Case Report: We present the case of a 50-year-old man with protein-losing enteropathy, who had profuse diarrhea, abdominal pain, lymphadenopathy, fever, and a weight loss of 10 kg in the preceding 2 months. Extensive work-up revealed infection with Giardia lamblia. We review clinical signs and symptoms, laboratory findings, and imaging studies, and discuss potential pitfalls in establishing the diagnosis. Conclusions: To the best of our knowledge, this represents one of the few published cases of intestinal giardiasis as a cause of protein-losing enteropathy in an immunocompetent adult. The diagnosis of lambliasis should be based on a combination of stool cultures and serum serology, and in cases of high clinical suspicion, an endoscopy and biopsy of the upper GI tract is recommended. © Am J Case Rep, 2014.