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| Home > Publications database > Perilipin 1 is a highly specific marker for adipocytic differentiation in sarcomas with intermediate sensitivity. |
| Home > Publications database > Perilipin 1 is a highly specific marker for adipocytic differentiation in sarcomas with intermediate sensitivity. |
| Journal Article | DKFZ-2017-00120 |
; ; ; ;
2017
Springer42162
Berlin
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Please use a persistent id in citations: doi:10.1007/s00432-016-2263-8
Abstract: Liposarcomas are the most common soft tissue sarcomas of adults. The identification of lipoblastic cells in soft tissue sarcomas is mandatory for the diagnosis of most subtypes of liposarcomas but may be difficult in conventional histology. The present study focuses on the expression and possible diagnostic impact of two PAT family proteins, perilipin 1/perilipin and perilipin 2/adipophilin in human liposarcomas.Eighty-seven cases of liposarcomas and 30 cases of non-lipomatous sarcomas were investigated immunohistochemically for perilipin 1 and 2 using entire tissue sections. Statistical analyses were performed using appropriate tests.Most liposarcomas and non-lipomatous sarcomas displayed positivity for perilipin 2. In contrast, while more than two-thirds of liposarcomas presented perilipin 1 positivity, all non-lipomatous sarcomas studied were negative for this marker, with statistical significance (p < 0.001). Perilipin 1 expression increased with adipocytic differentiation of liposarcoma subtypes showing statistical significance (p < 0.001). Non-lipomatous sarcomas demonstrated variable expression levels of perilipin 2. The expression level of perilipin 2 appeared to be correlated with tumor cell degeneration, e.g., through hypoxia.Perilipin 2 is not well suitable for distinction between liposarcomas and non-lipomatous sarcomas. However, perilipin 1 appeared to be a highly specific marker for liposarcoma and adipocytic differentiation in sarcomas with intermediate sensitivity.
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