Zusammenfassung
Das seltene Krankheitsbild der primär progressiven Aphasie ist durch eine progrediente Sprachstörung gekennzeichnet, bei der recht häufig Wortfindungsstörungen das initiale Symptom darstellen. Die Sprachstörung bleibt über mehrere Jahre das führende und oft auch einzige Symptom. Andere kognitive Funktionen wie Gedächtnis, Orientierung, Urteilsvermögen oder visuell-räumliche Fähigkeiten sind über längere Zeit intakt und können gelegentlich nach einer Krankheitsdauer von 5–7 Jahren beeinträchtigt sein. In der morphologischen Bildgebung ist meist eine links temporale Atrophie zu sehen, sie kann aber auch die frontale Region betreffen oder beidseits vorhanden sein. Die funktionelle Bildgebung weist strukturelle Auffälligkeiten links temporal oder frontotemporal nach. Neuropathologische Untersuchungen zeigen in den Regionen der Atrophie einen neuronalen Zellverlust und eine Gliose, die gelegentlich von spongiformen Veränderungen begleitet sind. In seltenen Fällen finden sich τ-positive Neurone oder Plaques und Fibrillen. Eine spezifische Therapie ist nicht bekannt, symptomorientierte logopädische Behandlung scheint eine gewisse Stabilisierung zu bewirken.
Summary
Primary progressive aphasia is a rare disease characterised by slow deterioration of language, which remains the leading symptom whereas other cognitive functions such as memory, orientation, judgement, and visual-spatial skills are relatively spared and mostly not affected until 5 to 7 years after disease onset. Structural imaging displays atrophy of the left temporal region which can also affect the frontal region or both hemispheres. Reduced neuronal activity in the left temporal lobe can be seen using functional imaging even before structural anomalies are detected. Neuropathological examination reveals neuronal cell loss and gliosis in the regions of atrophy which are sometimes accompanied by spongiform changes. T-positive neurons or plaques and neurofibrillary tangles are present in rare cases. A specific therapy is not known. Logopaedic therapy focussed on the main symptoms seems to stabilise linguistic abilities.
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Block, F., Kastrau, F. Primär progressive Aphasie. Nervenarzt 75, 1167–1171 (2004). https://doi.org/10.1007/s00115-004-1770-z
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DOI: https://doi.org/10.1007/s00115-004-1770-z