Katja Perdan-Pirkmajer

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Adult-onset Still’s disease (AOSD) is an uncommon systemic inflammatory disease of unknown aetiology. Up to 80% of AOSD cases can be controlled with corticosteroids; however, reports on those unresponsive to corticosteroids, conventional disease modifying drugs and biological agents, including anti-IL1 inhibitors, are emerging. We present a case of AOSD(More)
Vaccines have undoubtedly brought overwhelming benefits to mankind and are considered safe and effective. Nevertheless, they can occasionally stimulate autoantibody production or even a recently defined syndrome known as autoimmune/inflammatory syndrome induced by adjuvants (ASIA). There is scarce data regarding autoimmune response after seasonal/influenza(More)
Astrocytes have a key role in the clearance and inactivation of histamine in the adult central nervous system, but transporters which mediate histamine uptake into astrocytes have not been fully characterized. We therefore investigated the kinetic and molecular characteristics of histamine uptake into cultured adult rat astrocytes. [(3)H]-histamine was(More)
Astrocytes participate in the clearance of neurotransmitters by their uptake and subsequent enzymatic degradation. Histamine as a polar and/or protonated molecule must use a carrier to be transported across the cell membrane, although a specific histamine transporter has not been elucidated, yet. In this work we upgraded the kinetic studies of histamine(More)
While carpal tunnel syndrome (CTS) is the most common entrapment neuropathy presented at rheumatologic consultation, its ulcerative variant is rarely described. We report of a case of severe bilateral medial nerve palsy, presented to us for diagnosis of chronic digital ulcers which had been suspected to be rheumatologic in origin. Careful examination(More)
OBJECTIVES The mechanism by which methotrexate (MTX) improves glucose homeostasis in patients with rheumatoid (RA) and psoriatic arthritis (PsA) remains undetermined. Animal studies indicate a role for intracellular accumulation of 5-aminoimidazole-4-carboxamide-1-β-d-ribofuranosyl 5'-monophosphate (ZMP) but this has not been directly demonstrated in(More)
Tumour necrosis factor-alpha (TNF-α) inhibitors are widely used in the management of patients with rheumatoid arthritis (RA) and spondylarthritides. However, TNF-α inhibition may lead to adverse events, including liver injury. The RA patients are frequently treated with several potentially hepatotoxic drugs concomitantly; hence, a causative link between(More)
Background Histamine is a double-protonated molecule with corresponding pKa values of 5.8 and 9.4. Therefore, at physiological pH, histamine exists as an equilibrium mixture of tautomeric cations: the monocation making up 96%, the dication only 3% and the rest being nonprotonated histamine. As a protonated molecule histamine most probably uses a carrier(More)
Background The neurotransmitter histamine is synthesized from histidine in histaminergic neurons. Later on it is taken up into synaptic vesicles by the vesicular monoamine transporter 2 and released into the synaptic cleft upon depolarization stimuli. The released neurotransmitter is metabolised by the enzyme histamine N-methyltransferase (HNMT) producing(More)