The clinical findings of thyroid neoplasia in horses are not associated with the diagnosis of malignancy. Complete surgical resection of the abnormal lobe prevents local recurrence of neoplastic thyroid tissue. The modified hemithyroidectomy technique preserves the function of the recurrent laryngeal nerve.

OBJECTIVE To compare humoral insulin-like growth factor (IGF)-1, platelet-derived growth factor (PDGF)-BB, transforming growth factor (TGF)-β1, and interleukin-1 receptor antagonist (IL-1Ra) concentrations in plasma and 3 types of equine autologous blood-derived preparations (ABPs). SAMPLE Blood and ABP samples from 12 horses. PROCEDURES Blood samples from each horse were processed by use of commercial systems to obtain plasma, platelet concentrate, conditioned serum, and aqueous platelet lysate. Half of the platelet concentrate samples were additionally treated with a detergent to release intracellular mediators. Humoral IGF-1, PDGF-BB, TGF-β1, and IL-1Ra concentrations were measured with ELISAs and compared statistically. RESULTS Median IGF-1 concentration was highest in conditioned serum and detergent-treated platelet concentrate, followed by platelet concentrate and plasma; IGF-1 was not detected in platelet lysate. Mean PDGF-BB concentration was highest in platelet lysate, followed by detergent-treated platelet concentrate and conditioned serum; PDGF-BB was not detected in plasma and platelet concentrate. Median TGF-β1 concentration was highest in detergent-treated platelet concentrate, followed by conditioned serum, platelet lysate, and platelet concentrate; TGF-β1 was not detected in most plasma samples. Median IL-1Ra concentration was highest in platelet lysate, followed by conditioned serum; IL-1Ra was not detected in almost all plasma, detergent-treated platelet concentrate, and platelet concentrate samples. CONCLUSIONS AND CLINICAL RELEVANCE Each ABP had its own cytokine profile, which was determined by the specific processing method. Coagulation and cellular lysis strongly increased humoral concentrations of cell-derived cytokines. No ABP had the highest concentrations for all cytokines. Further studies are needed to assess clinical relevance of these findings.

Equine paranasal sinuses are susceptible to inflammation. Insufficient drainage through the nasal passages and meatus may lead to the accumulation of inspissated purulent discharge. Particularly in ponies, these anatomical structures are suspected to be relatively small. To date, there are no reports considering the morphology of nasal conchal bullae in small horse breeds such as Shetland ponies. The aim of the present study was to How to cite this article: Gerlach K, Vervuert I, Gittel C, et al.An anatomical study of the dorsal and ventral nasal conchal bullae and middle nasal conchae in normal Shetland ponies:Computed tomographic anatomical and morphometric findings.

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ZusammenfassungIn den letzten Jahren haben zellbasierte Therapeutika zur Behandlung von Osteoarthritiden in der Pferdemedizin einen regelrechten Boom erlebt. In der Praxis werden diese Therapeutika in Eigenverantwortung des Tierarztes aus Patientenblut oder anderen körpereigenen Geweben wie Fettgewebe oder Knochenmark hergestellt. Auch wenn diesen zellbasierten Therapiemethoden das einheitliche therapeutische Konzept der regenerativen Medizin gemein ist, unterscheiden sie sich maßgeblich hinsichtlich Herstellungsverfahren, Inhaltsstoffen und Funktionsweisen. Grundlegendes Wissen hierzu ermöglicht es dem praktizierenden Tierarzt, das für ihn und seine Pferdepatienten geeignete Produkt auszuwählen und bestmögliche Behandlungsstrategien zu erstellen.