Melanie Beyer

Learn More
CONTEXT No immunohistochemical marker has been established to reliably differentiate adrenocortical tumors from other adrenal masses. A panel of markers like melan-A and inhibin-α is currently used for this purpose but suffers from limited diagnostic accuracy. We hypothesized that expression of steroidogenic factor-1 (SF-1), a transcription factor involved(More)
Patients after allogeneic stem-cell transplantation (alloSCT) have an increased risk for invasive aspergillosis (IA). Here, recipients of an allograft with IA (n=81) or without IA (n=58) were screened for 84 single nucleotide polymorphisms in 18 immune relevant genes. We found 3 markers in chemokine (C-X-C motif) ligand 10 (CXCL10, 4q21, 11,101 C>T, P=.007;(More)
BACKGROUND Cutaneous squamous cell carcinoma (cSCC) is a common cancer capable of metastasis. Sentinel lymph node biopsy (SLNB) may be a valuable adjunct for patients with cSCC at high risk for metastasis. However, data on risk factors for metastasis and results of SLNB from patients with cSCC are limited. OBJECTIVES To evaluate risk factors for(More)
BACKGROUND Hypoxia-inducible factor-1 (HIF-1) overexpression has been linked to tumor progression and poor prognosis. We investigated whether targeting of HIF-1 using chetomin, a disrupter of the interaction of HIF-1 with the transcriptional coactivator p300, influences the radiosensitivity of hypoxic HT 1080 human fibrosarcoma cells. METHODS Optimal dose(More)
BACKGROUND AND PURPOSE The hypoxic accumulation of the transcription factor subunit hypoxia-inducible factor-1alpha (HIF-1alpha), a potential endogenous hypoxia marker and therapeutic target, has recently been shown to strongly depend on glucose availability. The aim of this study was to investigate the underlying mechanism of this effect. MATERIAL AND(More)
Despite recent therapeutic improvements, the prognosis for patients suffering from Sézary syndrome (SS), a disseminated form of cutaneous T-cell lymphomas, is still poor. We identified bi- and monoallelic deletions of the tumor necrosis factor-α-induced protein 3 gene (TNFAIP3; A20) in a high proportion of SS patients as well as biallelic A20 deletion in(More)
BACKGROUND Pre- and early clinical studies on patients with autoimmune diseases suggested that induction of regulatory T(T(reg)) cells may contribute to the immunosuppressive effects of glucocorticoids (GCs). OBJECTIVE We readdressed the influence of GC therapy on T(reg) cells in immunocompetent human subjects and naïve mice. METHODS Mice were treated(More)
BACKGROUND Primary cutaneous lymphomas (CLs) are a heterogeneous group of diseases arising from B or T lymphocytes. CLs are grouped according to their clinical behaviour into indolent, intermediate and aggressive types. Indolent CLs respond well to therapy but frequently relapse, resulting in prolonged periods of follow-up. OBJECTIVES To evaluate the(More)
BACKGROUND The monoclonal antibody rituximab directed against the B-cell antigen CD20 was approved for the treatment of B-cell lymphomas and maintenance therapy in follicular lymphomas more than a decade ago. However, median follow-up in case series of intravenous rituximab therapy in primary cutaneous B-cell lymphomas (CBCL) lasts only up to 3 years. We(More)
Cutaneous T-cell lymphomas represent extranodal non-Hodgkin lymphomas of mature T-cells, which accumulate in the skin. They have been recognized as a heterogeneous group with distinct variability in clinical presentation and histopathology, with divergent biological behaviour and prognosis. Therefore the exact diagnosis is an important prerequisite for an(More)