Lutz F Schweiger

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We have compared 2-deoxy-2-[18F]-fluoro-d-glucose positron emission tomography (FDG-PET) images of large or locally advanced breast cancers (LABC) acquired during Anthracycline-based chemotherapy. The purpose was to determine whether there is an optimal method for defining tumour volume and an optimal imaging time for predicting pathologic chemotherapy(More)
1 Background: Predictive biomarkers (BMs) for EGJAc would optimise treatment selection and avoid ineffective therapy. Metabolic response (MR) defined as >35% decrease in tumour FDG Standardized Uptake Value (SUV) between day 0 & 14 after starting chemotherapy has a high negative predictive value (95%) for response, but limited positive predictive value(More)
The utility of 5-fluoro-5-deoxyribose (FDR) as an efficient bioconjugation agent for radiolabelling of the RGD peptides c(RGDfK) and c(RGDfC) is demonstrated. The bioconjugation is significantly superior to that achieved with 2-fluoro-2-deoxyglucose (FDG) and benefits from the location of the fluorine at C-5, and that ribose is a 5-membered ring sugar(More)
Three fluoro-barbiturates were synthesised, showing in vivo sedative efficacy. One of them, [(18)F], was synthesised in radiofluorinated form. PET/CT Imaging with [(18)F] identified β-amyloid over-expressing transgenic mice (βA mice) compared to wild type and tau lines. The fluorescent barbiturate 9 was able to label βA plaques in brain sections of βA mice,(More)
Background To determine the utility of F-18-FDG and C-11-Choline uptake, in patients with esophageal and esophago-gastric junction tumors who are to undergo either neo-adjuvant or palliative chemotherapy, in predicting response (pathological and survival). Methods Eighteen patients with biopsy proven cancer were recruited prospectively. Patients underwent(More)
We report a last-step fluorinase-catalyzed [(18) F]-fluorination of a cysteine-containing RGD peptide. The peptide was attached through sulfur to a modified and more hydrophilic variant of the recently disclosed Barbas linker which was itself linked to a chloroadenosine moiety via a PEGylated chain. The fluorinase was able to use this construct as a(More)
INTRODUCTION Tumor refractoriness to chemotherapy is frequently due to the acquisition of resistance. Resistant cells selected by exposure to chemotherapy agents may exhibit differences in [18F]fluoro-2-deoxy-d-glucose (FDG) incorporation, as compared with sensitive cells. METHODS FDG incorporation, hexokinase (HK) activity, glucose transport and ATP(More)
Previous work has shown that hunger and food intake are lower in individuals on high-protein (HP) diets when combined with low carbohydrate (LC) intakes rather than with moderate carbohydrate (MC) intakes and where a more ketogenic state occurs. The aim of the present study was to investigate whether the difference between HPLC and HPMC diets was associated(More)