Background: Thyroid hormones and sympathetic stimulation are needed for activating Brown adipose tissue (BAT) during cold exposure. Studies of human cold exposure have demonstrated both increased production and raised clearance of triiodothyronine (T3). Greenlandic hunters provide a unique model for evaluating metabolic effects of cold exposure.
View Article and Find Full Text PDFPrimary hyperparathyroidism commonly results from a solitary parathyroid adenoma. A water clear cell parathyroid adenoma represents a rare histological variant. This report presents the challenges of preoperative detection of a giant parathyroid adenoma, which was of the water clear cell variant.
View Article and Find Full Text PDFObjective: Gallium-68-DOTA-D-Phe1-Try3-Octreotide (Ga-DOTATOC) is a radiolabeled somatostatin receptor (SSTR) analog that is widely used in the imaging of neuroendocrine tumors (NET). Benign and malignant prostate tumors have been observed to express SSTR. Diffuse symmetric DOTATOC uptake in the prostate is a normal positron emission tomography (PET) finding.
View Article and Find Full Text PDFObjective: Patients with indeterminate thyroid cytology often have a diagnostic hemithyroidectomy. The role of molecular imaging, particularly fluorine-18-fluorodeoxyglucose (F-FDG) positron emission tomography (PET), is controversial, and demographic variations in tumor prevalence and histology influence test performance and clinical utility. We retrospectively assessed the prevalence of indeterminate thyroid cytology and the malignancy rate in patients from an iodine deficient area, and evaluated the diagnostic value of preoperative thyroid scintigraphy and F-FDG PET/CT among operated patients.
View Article and Find Full Text PDFBrown tumors are uncommon manifestations of hyperparathyroidism (HPT) that without awareness are easily misdiagnosed as metastases. This short report highlights the importance of clinical context and clear communication between medical specialties when interpreting complex radiologic findings.
View Article and Find Full Text PDFAim: We aimed to evaluate the prevalence of incidental Ga-DOTA-conjugated somatostatin receptor-targeting peptide PET/CT (SSTR PET/CT) findings, their clinical significance in the need for follow-up, and their risk of malignancy.
Materials And Methods: Studies reporting incidental SSTR PET/CT findings were systematically searched in PubMed, Cochrane, Embase and Web of Science literature published prior to 1 of May 2020. Studies were filtered by two independent readers for eligibility based on title and abstract, and subsequently on full text.
Background: Paraneoplastic cerebellar degeneration (PCD) is a classic neurological syndrome where the presence of Anti-Tr/DNER antibodies is strongly associated with Hodgkin Lymphoma (HL). Awareness of the syndrome is important because with prompt treatment the prognosis of HL is good. The diagnosis can be a challenge in some patients.
View Article and Find Full Text PDFThe prognosis of small cell lung cancer (SCLC) remains poor with a 5-year survival rate of 4-6%. In non-small cell lung cancer (NSCLC), high levels of intact and cleaved forms of the receptor for urokinase plasminogen activator (uPAR) are significantly associated with short overall survival. Our aim was therefore to determine the prognostic value of the different uPAR forms in blood from SCLC patients.
View Article and Find Full Text PDFObjectives: To study the prognostic impact of the different forms of the receptor for urokinase plasminogen activator (uPAR) in serum from 171 non-small cell lung cancer (NSCLC) patients.
Materials And Methods: Serum sampled preoperatively was available from 171 patients radically resected for NSCLC. Intact uPAR, uPAR(I-III), intact and cleaved uPAR, uPAR(I-III)+uPAR(II-III) and the liberated uPAR(I) were measured by time-resolved fluorescence immunoassays (TR-FIAs 1-3).
Background: The purpose of this study was to investigate the prognostic value of different forms of the urokinase receptor, uPAR, in serum from prostate cancer (PC) patients.
Patients And Methods: The uPAR forms were measured in samples from 131 metastatic PC patients. These constituted a subset of patients included in a randomized clinical trial of treatment with total androgen blockade (TAB) versus polyestradiol phosphate (PEP).
Urokinase plasminogen activator (uPA) cleaves its three-domain cell surface receptor, uPAR, liberating domain I [uPAR(I)] and leaving the cleaved uPAR(II-III) on the cell surface. Both intact and cleaved uPAR can be shed from the cell surface. uPAR(I) was previously shown to be a prognostic factor in lung tumour extracts.
View Article and Find Full Text PDFThe cellular receptor for urokinase, uPAR, localizes its ligand, uPA, and thereby the plasminogen activation, to the cell surface. uPA also cleaves uPAR, liberating the ligand-binding domain I, and thereby inactivates the binding potential of uPAR for both uPA and vitronectin. The uPA-catalyzed cleavage of uPAR is fast on the cell surface, when uPA is bound to a neighboring uPAR molecule.
View Article and Find Full Text PDFObjectives: The purpose of this study was to determine the prognostic impact of liberated domain I of the urokinase plasminogen activator receptor, uPAR(I), in tumour extracts from patients resected for the squamous cell carcinoma (SCC) of the lung.
Materials And Methods: A recently developed time-resolved fluoroimmunoassay for uPAR(I), TR-FIA 3, was validated using a pool of SCC tumour extracts. This assay was then used to measure the levels of uPAR(I) in tumour extracts from 63 SCC patients.