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Axonal outgrowth in muscle grafts made acellular by chemical extraction

Purpose: To compare nerve regeneration in autologous detergent extracted and freeze-thawed muscle grafts and to electrophoretically characterize the grafts. Methods: Autologous acellular muscle grafts were created either by freeze/thawing or by detergent extraction and then used to bridge a 10 mm gap in rat sciatic nerve. The autologous grafts were compared with respect to protein content, using e

Hyperbaric oxygen treatment has different effects on nerve regeneration in acellular nerve and muscle grafts

Effects of hyperbaric oxygen treatment (HBO) on nerve regeneration in acellular nerve and muscle grafts were investigated in rats. Nerve and muscle grafts were made acellular by freeze-thawing and the obtained grafts were used to bridge a 10-mm gap in the sciatic nerve on the left and right sides, respectively. Rats were treated with HBO (100% oxygen for 90 minutes at 2.5 atmospheres absolute pres

Vibration-induced hand problems : Role of the peripheral nerves in the pathophysiology

A substantial number of people who are exposed to vibrating hand-held tools develop vasospastic and sensorineural symptoms that may seriously affect the ability to work. Apart from the discomfort of the disease itself, this leads to socio-economic problems for the patients and high costs for the society. The diagnosis of the neurological symptoms is sometimes difficult and may be misinterpreted as

A practical guide to active stand testing and analysis using continuous beat-to-beat non-invasive blood pressure monitoring

Purpose: The average adult stands approximately 50–60 times per day. Cardiovascular responses evoked during the first 3 min of active standing provide a simple means to clinically assess short-term neural and cardiovascular function across the lifespan. Clinically, this response is used to identify the haemodynamic correlates of patient symptoms and attributable causes of (pre-)syncope, and to det

Elecsys® Total-Tau and Phospho-Tau (181P) CSF assays : Analytical performance of the novel, fully automated immunoassays for quantification of tau proteins in human cerebrospinal fluid

Background: Total tau (tTau) and phosphorylated 181P tau (pTau) are supportive diagnostic cerebrospinal fluid (CSF) biomarkers for Alzheimer's disease. Manual CSF tau assays are limited by lot-to-lot and between-laboratory variability and long incubation/turnaround times. Elecsys® Total-Tau CSF and Phospho-Tau (181P) CSF immunoassays were developed for fully automated cobas e analyzers, allowing b

Optimizing selectivity of anion hydrophobic multimodal chromatography for purification of a single-chain variable fragment

Single-chain variable fragments (scFv) are widely used in several fields. However, they can be challenging to purify unless using expensive Protein L-based affinity adsorbents or affinity tags. In this work, a purification process for a scFv using mixed-mode (MM) chromatography was developed by design of experiments (DoE) and proteomics for host cell protein (HCP) quantification. Capture of scFv f

Advanced radiological work-up as an adjunct to decision in early reconstructive surgery in brachial plexus injuries

Background: As neurophysiologic tests may not reveal the extent of brachial plexus injury at the early stage, the role of early radiological work-up has become increasingly important. The aim of the study was to evaluate the concordance between the radiological and clinical findings with the intraoperative findings in adult patients with brachial plexus injuries.Methods: Seven consecutive male pat

Expanding Architecture: Critical perspectives from within a school of architecture

Konferensbidrad, 10:e Pedagogiska inspirationskonferensen, December 2018, LTHThe architectural community needs to be better at managing a diversity of experiences, desires and needs associated with architecture. How can students' call for a more problematizing and inclusive education and industry be used as a basis for student and teacher collaboration, as well as an educational platform for raising diversity issues? The Symposium Expanding Architecture - Critical Perspect

Reconstruction of sciatic nerve after traumatic injury in humans - factors influencing outcome as related to neurobiological knowledge from animal research

Background: The aim was to evaluate what can be learned from rat models when treating patients suffering from a sciatic nerve injury.Methods: Two patients with traumatic sciatic nerve injury are presented with examination of motor and sensory function with a five-year follow-up. Reconstruction of the nerve injury was performed on the second and third day, respectively, after injury using sural ner

On the Small Crack Fracture Mechanics.

The limit of validity of linear fracture mechanics is specified by the minimum allowable crack length through an ASTM convention. Extension into the non-linear region ought to imply an extension towards smaller allowable Cracks. In order to elucidate the question "How short is the smallest crack that fits the methods of fracture mechanics, and how do shorter cracks than that behave?" a pilot inves

Repair of the peripheral nerve-remyelination that works

In this review we summarize the events known to occur after an injury in the peripheral nervous system. We have focused on the Schwann cells, as they are the most important cells for the repair process and facilitate axonal outgrowth. The environment created by this cell type is essential for the outcome of the repair process. The review starts with a description of the current state of knowledge

Nerve injuries of the upper extremity and hand

A nerve injury has a profound impact on the patient's daily life due to the impaired sensory and motor function, impaired dexterity, sensitivity to cold as well as eventual pain problems. To perform an appropriate treatment of nerve injuries, a correct diagnosis must be made, where the injury is properly classified, leading to an optimal surgical approach and technique, where timing of surgery is

Hand injuries in an older population - A retrospective cohort study from a single hand surgery centre

Background: Hand injuries occur at all ages. With an aging population globally an increasing number of hand injuries among the elderly is to be expected. The aim of the present study is to describe the health characteristics and detailed injury patterns for elderly with hand injuries, with incidence, as a background for further studies on the topic. Specific knowledge is currently lacking about ha

Doctoral thesis: On the Role of Process Regions at Stationary and Growing Cracks.

Studies of crack behaviour and fracture are generally performed using continuum analysis. Thus, the process region is either not considered at all or assumed to be point-sized. In the latter case it is often ascribed a desired property, usually the ability to consume energy.A major step towards the understanding of the fracture process region the concept of autonomy of the near tip field was intro