Sahlgrenska University Hospital

7 ARTICLES PUBLISHED IN JoVE

Medicine

A High Throughput, Multiplexed and Targeted Proteomic CSF Assay to Quantify Neurodegenerative Biomarkers and Apolipoprotein E Isoforms Status

Wendy E. Heywood^*1, Anna Baud^*1, Emily Bliss¹, Ernestas Sirka¹, Jonathan M. Schott², Henrik Zetterberg³, Daniela Galimberti⁴, Neil J. Sebire⁵, Kevin Mills¹

¹Centre for Translational Omics, Genetics and Genomic Medicine Deptartment, Great Ormond Street Institute of Child Health, University College London, ²Dementia Research Centre, Institute of Neurology, University College London, ³Clinical Neurochemistry Laboratory, Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, The Sahlgrenska Academy, University of Gothenburg, ⁴Neurology Unit, Department of Pathophysiology and Transplantation, University of Milan, ⁵Great Ormond Street Hospital for Children, University College London

We describe a high-throughput, multiplex, and targeted proteomic cerebrospinal fluid (CSF) assay developed with potential for clinical translation. The test can quantitate potential markers and risk factors for neurodegeneration, such as the apolipoprotein E variants (E2, E3 and E4), and measure their allelic expression.

Medicine

Absolute Quantification of Aβ_1-42 in CSF Using a Mass Spectrometric Reference Measurement Procedure

Josef Pannee^1,2, Kaj Blennow^1,2, Henrik Zetterberg^1,2,3, Erik Portelius^1,2

¹Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, The Sahlgrenska Academy at University of Gothenburg, Sahlgrenska University Hospital, ²Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, ³UCL Institute of Neurology, Queen Square

A reference measurement procedure for the absolute quantification of Aβ_1-42 in human CSF based on solid-phase extraction and liquid chromatography tandem mass spectrometry is described.

Neuroscience

Sample Preparation for Endopeptidomic Analysis in Human Cerebrospinal Fluid

Karl T. Hansson¹, Tobias Skillbäck^1,2, Elin Pernevik¹, Jessica Holmén-Larsson¹, Gunnar Brinkmalm¹, Kaj Blennow^1,2, Henrik Zetterberg^1,2,3, Johan Gobom^1,2

¹Inst. of Neuroscience and Physiology, Dept. of Psychiatry and Neurochemistry, Sahlgrenska Academy at University of Gothenburg, ²Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, ³Department of Molecular Neuroscience, UCL Institute of Neurology

A method for mass spectrometric analysis of endogenous peptides in human cerebrospinal fluid (CSF) is presented. By employing molecular weight cut-off filtration, chromatographic pre-fractionation, mass spectrometric analysis and a subsequent combination of peptide identification strategies, it was possible to expand the known CSF peptidome nearly ten-fold compared to previous studies.

JoVE Core

Kinematic Analysis Using 3D Motion Capture of Drinking Task in People With and Without Upper-extremity Impairments

Margit Alt Murphy^1,3, Steve Murphy², Hanna C. Persson^1,3, Ulla-Britt Bergström³, Katharina Stibrant Sunnerhagen¹

¹Institution of Neuroscience and Physiology, Rehabilitation Medicine, Sahlgrenska Academy, University of Gothenburg, ²Securesoft Sweden, ³Departement of Occupational Therapy and Physiotherapy, Sahlgrenska University Hospital

This protocol describes an objective method to evaluate the movement performance and sensorimotor function of the upper extremity applied to individuals with stroke and healthy controls. A standardized test procedure, kinematic analysis and outcome variables for three-dimensional motion capture of drinking task are provided.

Bioengineering

Isolation and Decellularization of a Whole Porcine Pancreas

Vijay Kumar Kuna^*1, Niclas Kvarnström^*2, Erik Elebring¹, Suchitra Sumitran Holgersson¹

¹Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, ²The Transplant Institute, Sahlgrenska University Hospital

Tissue engineering of the whole pancreas is a challenge because of its exocrine and endocrine functions. We show a method for the dissection of an intact porcine pancreas and the process of successful decellularization by perfusion of detergents Triton X-100, sodium deoxycholate, and deoxyribonuclease.

Medicine

Regenerative Peripheral Nerve Interface: Surgical Protocol for a Randomized Controlled Trial in Postamputation Pain

Emily Pettersen^1,2,3,4, Paolo Sassu⁵, Francesca Alice Pedrini^1,5, Hannes Granberg^1,2, Carina Reinholdt^2,6, Juan Manuel Breyer⁷, Aidan Roche⁸, Andrew Hart^9,10, Adil Ladak¹¹, Hollie A. Power¹¹, Michael Leung¹², Michael Lo¹², Ian Valerio¹³, Kyle R. Eberlin¹³, Jason Ko¹⁴, Gregory A. Dumanian¹⁴, Theodore A. Kung¹⁵, Paul Cederna¹⁵, Max Ortiz-Catalan^1,4,16,17

¹Center for Bionics and Pain Research, ²Center for Advanced Reconstruction of Extremities, Sahlgrenska University Hospital, ³Department of Electrical Engineering, Chalmers University of Technology, ⁴Bionics Institute, ⁵IV Clinica Ortoplastica, IRCCS Istituto Ortopedico Rizzoli, ⁶Department of Hand Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital, ⁷Department of Orthopedic Surgery, Hand Unit, Worker Hospital, ⁸College of Medicine and Veterinary Medicine, The Queen's Medical Research Institute, The University of Edinburgh, ⁹Canniesburn Plastic Surgery Unit, Glasgow Royal Infirmary, ¹⁰College of Medicine, Veterinary & Life Sciences, The University of Glasgow, ¹¹Division of Plastic Surgery, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, ¹²Plastics and Reconstructive Surgery, Dandenong Hospital, Monash Health, ¹³Division of Plastic and Reconstructive Surgery, Massachusetts General Hospital & Harvard Medical School, ¹⁴Division of Plastic Surgery, Department of Surgery, Northwestern Feinberg School of Medicine, ¹⁵Section of Plastic Surgery, Department of Surgery, Michigan Medicine, ¹⁶Medical Bionics Department, University of Melbourne, ¹⁷Prometei Pain Rehabilitation Center

Here, we describe the surgical procedure to perform Regenerative Peripheral Nerve Interface (RPNI) surgery for treating postamputation neuropathic pain in the context of an international, randomized controlled trial (RCT) (ClinicalTrials.gov, NCT05009394). The RCT compares RPNI with two other surgical techniques, namely, Targeted Muscle Reinnervation (TMR) and neuroma excision combined with intra-muscular transposition.

Medicine

Targeted Muscle Reinnervation: Surgical Protocol for a Randomized Controlled Trial in Postamputation Pain

Emily Pettersen^1,2,3,4, Paolo Sassu⁵, Francesca Alice Pedrini^1,5, Hannes Granberg^1,2, Carina Reinholdt^2,6, Juan Manuel Breyer⁷, Aidan Roche⁸, Andrew Hart^9,10, Adil Ladak¹¹, Hollie A. Power¹¹, Michael Leung¹², Michael Lo¹², Ian Valerio¹³, Kyle R. Eberlin¹³, Theodore A. Kung¹⁴, Paul Cederna¹⁴, Jason M. Souza^15,16, Oskar Aszmann¹⁷, Jason Ko¹⁸, Gregory A. Dumanian¹⁸, Max Ortiz-Catalan^1,4,19,20

¹Center for Bionics and Pain Research, ²Center for Advanced Reconstruction of Extremities, Sahlgrenska University Hospital, ³Department of Electrical Engineering, Chalmers University of Technology, ⁴Bionics Institute, ⁵IV Clinica Ortoplastica, IRCCS Istituto Ortopedico Rizzoli, ⁶Department of Hand Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital, ⁷Department of Orthopedic, Hand Unit, Worker Hospital, ⁸College of Medicine and Veterinary Medicine, The Queen's Medical Research Institute, The University of Edinburgh, ⁹Canniesburn Plastic Surgery Unit, Glasgow Royal Infirmary, ¹⁰College of Medicine, Veterinary & Life Sciences, The University of Glasgow, ¹¹Division of Plastic Surgery, Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, ¹²Plastics and Reconstructive Surgery, Dandenong Hospital, Monash Health, ¹³Division of Plastic and Reconstructive Surgery, Massachusetts General Hospital &, Harvard Medical School, ¹⁴Section of Plastic Surgery, Department of Surgery, Michigan Medicine, ¹⁵Department of Surgery, Uniformed Services University of the Health Sciences and Walter Reed National Military Medical Center, ¹⁶Department of Plastic and Reconstructive Surgery, Ohio State University, ¹⁷Clinical Laboratory for Bionic Extremity Reconstruction, Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University Vienna, ¹⁸Division of Plastic Surgery, Department of Surgery, Northwestern Feinberg School of Medicine, ¹⁹Medical Bionics Department, University of Melbourne, ²⁰Prometei Pain Rehabilitation Center

The protocol outlines the surgical procedure for the treatment of postamputation pain using Targeted Muscle Reinnervation (TMR). TMR will be compared with two other surgical techniques, specifically Regenerative Peripheral Nerve Interface (RPNI) and neuroma excision, followed by immediate burying within muscle under the context of an international, randomized controlled trial.