Publications by authors named "Jan Franzen"

The raccoon (Carnivora: Procyonidae) is an invasive species of growing importance for the introduction of alien pathogens or as additional hosts for autochthonous pathogens in Europe, including zoonotic parasites. As the population is steadily increasing and outcompeting the red fox () in Germany, the consumption of raccoon meat raises concerns about pathogens they may transmit. Therefore the presence of larvae was here investigated in muscle samples (n = 904) of raccoons from northern Germany.

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Meningioma is the most frequent intracranial neoplasm in cats. Here we describe the first case of chordoid meningioma (CM), a rare grade II meningioma subtype, in a 5.5-year-old European wildcat (Felis silvestris) from a Swiss zoo.

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Coronaviruses are causing severe respiratory and enteric diseases in humans and animals. Here, we report an outbreak of equine coronavirus disease in adult horses, detected by a voluntary syndromic surveillance scheme for equine diseases in Switzerland. This scheme allowed a rapid concerted action to diagnose and contain the disease.

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There are few reports of tumours in bats, despite the fact that members of the Chiroptera order include 22.4% of all currently known mammal species. We now describe a case of malignant peripheral nerve sheath tumour (MPNST) in an adult female Seba's short-tailed bat (Carollia perspicillata) from a private zoo in Switzerland.

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Transplantation of multipotent mesenchymal progenitor cells is a valuable option for treating tendon disease. Tenogenic differentiation leading to cell replacement and subsequent matrix modulation may contribute to the regenerative effects of these cells, but it is unclear whether this occurs in the inflammatory environment of acute tendon disease. Equine adipose-derived stromal cells (ASC) were cultured as monolayers or on decellularized tendon scaffolds in static or dynamic conditions, the latter represented by cyclic stretching.

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Purpose: The purpose of our study was to systematize the arterial supply of the talus and characterize the vessel damage occurring in the talus after total ankle replacement. Previous studies exist using vascular injection to visualize the topic [Giebel et al. (Surg Radiol Anat 19:231-235, 1997); Mulfinger and Trueta (J Bone Joint Surg Br 52:160-167, 1970); Peterson et al.

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Background: Incorporation of advanced laparoscopic procedures in the practice of institutions without respective experience is a significant impediment in the dissemination of minimally invasive techniques. On-site mentoring programs carry several cost-related and practical constraints. Telementoring has emerged as a practical and cost-effective alternative mentoring tool.

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Purpose: The purpose of this study was to categorize and systematize the arterial supply of the metatarsal bones and furthermore the observation of arterial lesions after frequently performed forefoot surgeries.

Materials And Methods: Twenty-two cadaver feet were analyzed by two plastination methods and the enzyme maceration method. Five forefoot surgeries were performed after arterial injections.

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