Enzymatic activity of type 1 iodothyronine deiodinase in selected liver tumors.

Introduction: Type 1 iodothyronine deiodinase (D1) converts thyroxin (T4) into tri-iodothyronine (T3). Strong evidence indicates that thyroid hormone metabolism is disturbed in neoplasms such as thyroid and breast cancer. However, there is limited data concerning the function of the D1 enzyme in liver tumors.

[Adult onset Still's disease as a diagnostics challenge in case of fever of unknown origin].

Fever of unknown origin is often a diagnostic challenge. Here we present a case of 55-year-old woman with a history of a few months fever, progressing weakness and salmon-coloured, macular skin rash. The differential diagnosis included neoplasmatic conditions, infections and connective tissue disorders.

Insulinoma in a patient with MEN 1 syndrome--9-year follow-up: case report.

Introduction: Multiple endocrine neoplasia type 1 (MEN 1) is a rare autosomal dominant inherited endocrine disease characterized by pancreatic, parathyroid, and anterior pituitary tumours. Hypercalcaemia due to parathyroid tumours is usually the first manifestation of MEN 1. Pancreatic islet tumours occur less frequently, among them gastrinomas and insulinomas are the most prevalent.

The enzymatic activity of type 1 iodothyronine deiodinase (D1) is low in liver hemangioma: a preliminary study.

Type 1 iodothyronine deiodinase (D1) is a crucial enzyme which converts the prohormone thyroxine (T4) into active tri-iodothyronine (T3). There has been strong evidence that the metabolism of thyroid hormones is disturbed in some neoplastic tissues such as thyroid, renal, and breast cancer. However, there are few available data about D1 enzyme activity in benign tumors such as hemangioma, which is the most common primary liver tumor.

[Progressive hearing loss as the leading sign of Wegener's granulomatosis].

57-year-old woman with a history of ischaemic heart disease, arterial hypertension and after myocardial infarction was admitted to the university hospital because of progressive hearing loss and fever of unknown origin. Shortly before hospitalization she developed cough, hemoptysis and conjunctivitis. On the basis of clinical presentation Wegener's granulomatosis was suspected.

Human breast cancer tissue expresses high level of type 1 5'-deiodinase.

Type 1 5'-deiodinase is one of two isoenzymes that participate in conversion of prohormone thyroxine into triiodothyronine (T3). A decrease in type 1 5'-deiodinase expression was observed in renal clear cell carcinoma, thyroid cancer, and lung cancer. The aim of this study was to evaluate type 1 5'-deiodinase activity and mRNA level in breast cancer tissue and non-cancerous surrounding breast tissue.

[Triiodothyronine receptors (TR) are present in breast cancer tissues].

Introduction: Possible relationships between breast cancer and thyroid hormones have been suggested for many years. The aim of this study was qualitative examination of triiodothyronine receptors (TR) in breast cancer tissues and in non cancerous breast tissue taken from the opposite side to the localization of the tumor.

Material And Methods: The material consisted of 15 breast cancer tissues of grades G1 to G3 and the same number of control tissues obtained during radical mastectomy or local tumor resection.