Christian Roßberg

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5-Hydroxytryptamine1A (5-HT1A) receptor agonists have been shown to inhibit the activity of hippocampal, cortical, and dorsal raphé neurons. We tested urapidil and a new 5-HT1A agonist, CM 57493 [4-(3-trifluoromethylphenyl)-1-(2-cyanoethyl)-1,2,3,6-tetrahydropyridine ], for their neuroprotective activity in models of focal and global cerebral ischemia in(More)
The purpose of the present study was to test whether the anticonvulsant, memantine (1-amino-3,5-dimethyladamantane), can protect neurons against hypoxic or ischemic damage. To this end, we used a rat model of transient forebrain ischemia and cultured neurons from chick embryo cerebral hemispheres. Ischemia was induced for 10 min by clamping both carotid(More)
The purpose of the present study was to investigate the neuroprotective action of nimodipine. Furthermore, the influence of nimodipine on postischemic local CBF (LCBF) was examined. Forebrain ischemia of the rat was performed for 10 min by bilateral carotid clamping, administration of trimethaphan, and blood withdrawal to obtain an MABP of 40 mm Hg. LCBF(More)
The present study investigates the effects of the 5-hydroxytryptamine1A agonist ipsapirone on electroencephalography and somatosensory evoked potentials after middle cerebral artery occlusion in the rat. We implanted 17 silver ball electrodes symmetrically distributed over the skull in 14 rats and registered electroencephalography activity and somatosensory(More)
The effects of vinpocetine on hippocampal cell damage and local cerebral blood flow (LCBF) were measured in a rat model of forebrain ischemia (2-vessel occlusion and hypotension). Duration of ischemia was 10 min. LCBF was determined after 2 min of recirculation using the 14C-iodoantipyrine technique. Hippocampal cell loss was quantified histologically 7(More)
We investigated the effect of the known antagonist of platelet-activating factor (PAF), ginkgolide B, on postischemic neuronal damage in the rat. Neuronal necroses were evaluated in the hippocampus 7 days after a 10-min forebrain ischemia. Preischemic application of ginkgolide B (50 mg/kg p.o.) significantly reduced neuronal damage. It is suggested that the(More)
In this report the effects of phencyclidine (PCP) on physiologic variables, local cerebral blood flow (LCBF), and on hippocampal cell damage were measured in a rat model of forebrain ischemia (2-vessel occlusion and hypotension). Ischemia was induced for 10 min. LCBF was determined after 2 min of recirculation, using the [14C]iodoantipyrine technique.(More)
Neurological complications resulting from pronounced cerebrovascular changes were observed in a 59-year-old female suffering from Grönblad-Strandberg syndrome. In addition to typical skin changes of the pseudoxanthoma elasticum and ocular alterations (exudative macular degeneration and angioid streaks) there were an unusual number of disturbed(More)
The effects of flunarizine on local cerebral blood flow, cortical energy metabolism and neuronal necrosis were evaluated in a rat model of forebrain ischemia. The application of flunarizine (2 X 40 mg/kg p.o.) at 24 and 4 h before ischemia accelerated the restoration of cortical high-energy phosphates during early post-ischemic recirculation and also(More)