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University Hospital Tuebingen

8 ARTICLES PUBLISHED IN JoVE

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Biology

In Vitro Synthesis of Modified mRNA for Induction of Protein Expression in Human Cells
Meltem Avci-Adali 1, Andreas Behring 1, Heidrun Steinle 1, Timea Keller 1, Stefanie Krajeweski 1, Christian Schlensak 1, Hans P. Wendel 1
1Department of Thoracic, Cardiac, and Vascular Surgery, University Hospital Tuebingen

In this video article, we describe the in vitro synthesis of modified mRNA for induction of protein expression in cells.

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Medicine

Cardiopulmonary Bypass in a Mouse Model: A Novel Approach
Nodir Madrahimov 1, Ruslan Natanov 1, Erin C. Boyle 1, Tobias Goecke 1, Ann-Kathrin Knöfel 1, Valentyna Irkha 1, Anna Solovieva 2, Klaus Höffler 1, Ulrich Maus 3, Christian Kühn 1, Issam Ismail 1, Gregor Warnecke 1, Malakh-Lal Shrestha 1, Serghei Cebotari *1, Axel Haverich *1
1Department of Cardiothoracic, Transplantation, and Vascular Surgery, Hannover Medical School, 2Department of Hematology, Oncology, Immunology, Rheumatology, and Pulmonology, University Hospital Tuebingen, 3Department of Pneumology, Hannover Medical School

This paper describes how to perform cardiopulmonary bypass in mice. This novel model will facilitate the investigation of the molecular mechanisms involved in organ damage.

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Bioengineering

Generation of Cationic Nanoliposomes for the Efficient Delivery of In Vitro Transcribed Messenger RNA
Tatjana Michel 1, Antonia Link 1, Meike-Kristin Abraham 1,2, Christian Schlensak 1, Karlheinz Peter 2,3, Hans-Peter Wendel 1, Xiaowei Wang 2,3, Stefanie Krajewski 1
1Department of Thoracic and Cardiovascular Surgery, Clinical Research Laboratory, University Medical Center, 2Atherothrombosis and Vascular Biology, Baker Heart & Diabetes Institute, 3Department of Medicine, Monash University

Here we describe a protocol for the generation of cationic nanoliposomes, which is based on the dry-film method and can be used for the safe and efficient delivery of in vitro transcribed messenger RNA.

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Medicine

Evaluation of Patients' Posture and Gait Profile After Lumbar Fusion Surgery by Video Rasterstereography and Treadmill Gait Analysis
Sebastian Scheidt 1,2, Ulf Krister Hofmann 2, Falk Mittag 2
1Department of Orthopedics and Trauma Surgery, University Hospital Bonn, 2Department of Orthopedic Surgery, University Hospital Tuebingen

Here, we present a protocol to analyze the posture and the gait of patients after lumbar fusion surgery by means of high-resolution video rasterstereography and a treadmill equipped with an integrated sensor mat. Allowing critical functional postoperative evaluation on a less subjective level may enhance accuracy and reliability of indication for surgery.

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Medicine

Hemocompatibility Testing of Blood-Contacting Implants in a Flow Loop Model Mimicking Human Blood Flow
Antonia Link 1, Giorgio Cattaneo 2,3, Eduard Brynda 4, Tomas Riedel 4, Johanka Kucerova 4, Christian Schlensak 1, Hans Peter Wendel 1, Stefanie Krajewski 1, Tatjana Michel 1
1Department of Thoracic, Cardiac and Vascular Surgery, University Hospital Tuebingen, 2Acandis GmbH, 3Institute of Biomedical Engineering, University of Stuttgart, 4Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic

This protocol describes a comprehensive hemocompatibility evaluation of blood-contacting devices using laser-cut neurovascular implants. A flow loop model with fresh, heparinized human blood is applied to mimic blood flow. After perfusion, various hematologic markers are analyzed and compared to the values gained directly after blood collection for hemocompatibility evaluation of the tested devices.

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Bioengineering

Application of Atomic Force Microscopy to Detect Early Osteoarthritis
Marina Danalache *1, Aadhya Tiwari *1, Viktor Sigwart 1,2, Ulf Krister Hofmann 1,3
1Laboratory of Cell Biology, Department of Orthopaedic Surgery, University Hospital of Tübingen, 2Medical faculty of the University of Tübingen, 3Department of Orthopaedic Surgery, University Hospital of Tübingen

We present a method to investigate early osteoarthritic changes at the cellular level in articular cartilage by using atomic force microscopy (AFM).

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Biology

Optical Sectioning and Visualization of the Intervertebral Disc from Embryonic Development to Degeneration
Florian Christof Bonnaire 1,2, Martina Feierabend 3, Julius Michael Wolfgart 1,4, Wolfram Breuer 5, Christian Walter 2, Ulf Krister Hofmann 1,2, Marina Danalache 1
1Laboratory of Cell Biology, Department of Orthopedic Surgery, University Hospital of Tübingen, 2Department of Orthopedic Surgery, University Hospital of Tübingen, 3Institute for Bioinformatics and Medical Informatics, Faculty of science of the University of Tübingen, 4Medical faculty of the University of Tübingen, 5Bavarian Health and Food Safety Authority

We present a method to investigate spatial chondrocyte organization in the anulus fibrosus of the intervertebral disc using an optical sectioning method.

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Medicine

A Simple Pit Assay Protocol to Visualize and Quantify Osteoclastic Resorption In Vitro
Wanjing Cen 1, Siegmar Reinert 1, Meltem Avci-Adali 2, Dorothea Alexander 1, Felix Umrath 1,3
1Department of Oral and Maxillofacial Surgery, University Hospital Tübingen, 2Department of Thoracic and Cardiovascular Surgery, University Hospital Tübingen, 3Department of Orthopaedic Surgery, University Hospital Tübingen

Here, we present a simple and effective assay procedure for resorption pit assays using calcium phosphate coated cell culture plates.

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