Endocrine Abstracts

Introduction: Hypothalamic AMP-activated protein kinase (AMPK) has emerged as a key molecular player in energy homeostasis. It participates of glucose homeostasis modulating liver glucose production. It is known that endotoxin shock presents various complicated metabolic aspects. Among them, in later phase circulatory collapse and hypoglycemia are induced with a deterioration of energy metabolism. Here we evaluated the participation of hypothalamic AMPK in the modulation of he...

Objective: The aim of this study was to investigate whether SUR2A (sulfonylurea receptor type 2A, ABCC9) MEF2a (myocyte enhancer factor-2a) and HIF1a (Hypoxia-inducible factor-1) can influence glucose uptake in oxidative muscle soleus by regulating GLUT4 expression.Methods: Insulin resistance was induced in male Wistar rats by inducing obesity with monosodium glutamate (MSG). At the age 3 months, half control and MSG-treated animals started receiving 0.1...

Introduction: Recent studies have shown that chronic lymphocytic thyroiditis is associated with increased risk of developing papillary thyroid carcinoma (PTC). Although still controversial, these carcinomas appear to have a better prognosis. This study aims to evaluate the presence of thyroiditis in thyroids with PTC and the association with histological variables of prognostic value, Tg and evidence of metastasis in 131I scan.Methods: Descrip...

Introduction: Pituitary aplopexy is rare (0.6 to 12.3%). Sudden expansion of pituitary tumor, from hemorrhage or infarction, may lead to permanent vision loss, paresis or death. We describe two cases of apoplexy as the initial manifestation of pituitary tumor.Case 1: Male, 30 years, healthy, observed in the emergency room (ER) complaining of headache, visual deficit and left ptosis for 3 days. He had left ptosis and bilateral paresis of the IV pair. Magn...

Introduction: There are fewer than 20 reported cases involving congenital adrenal hyperplasia (CAH) and myelolipoma. This is a rare benign tumor, often located on the adrenal, consisting of mature adipose and hematopoietic tissues. Its origin is unclear; the most accepted theory is the occurrence of blood capillaries reticuloendothelial cells metaplasia, in response to infection, stress or necrosis. In a small number of cases ACTH hypersecretion coexists.<p class="abstext"...

Introduction: Merkel cell carcinoma (MCC) is a rare, aggressive cutaneous malignancy, affecting predominantly caucasian and older individuals (slight male predominance). This neoplasm is associated with a high risk of local recurrence and regional lymph node involvement. Distant metastases are less frequent; they were described in liver, bone, CNS, skin, lung and spleen. The authors describe a clinical case of Merkel cell carcinoma with a single metastasis in a thyroid nodule....

Introduction: Glycated hemoglobin A1c (A1C) is used for diagnosis and monitoring diabetic patients. The precision of A1C assay methods is affected by the presence of hemoglobin variants. About 7% of world population is asymptomatic carrier of these variants.Case report: PCIMR, woman, 42 years old, caucasian, followed in consultation for obesity, primary hypothyroidism and bipolar disorder. Had family history of obesity and sudden death of her father at 5...

Introduction: There is an increasing evidence of vitamin D role in maintaining normal glucose homeostasis. Gestational diabetes (GD) is related to insulin resistance and vitamin D deficiency has been linked with GD risk in some studies.Aims: To assess whether vitamin D levels are related with gestational diabetes in a group of healthy pregnant women.Subjects: The whole group included 845 pregnant women recruited from April 2009 to ...

Introduction: Recently, the American Diabetes Association has proposed glycated hemoglobin (HbA1c) as a diagnostic criteria for diabetes (HbA1c≥6.5%) and prediabetes (5.7%≤HbA1c≤6.4%).Aims: To compare HbA1c with fasting glucose and oral glucose tolerance test (OGTT) as diagnostic criteria for diabetes and prediabetes, in obese patients; to calculate its sensitivity and specificity when compared with standard diagnostic criteria.<p c...

Background: Pancreatic cancer (PC) is rare, representing 6.8% of mortality in our country. Diabetes mellitus (DM) is often associated. Main hypothesis include: PC triggers DM; DM is a risk factor for PC; diabetes treatment modifies cancer risk.Objective: To evaluate DM and PC association.Methods: Evaluation of patients with PC (2006–2009), divided into: group A (without DM) and group B (with DM). Parameters evaluated: age, gen...