Endocrine Abstracts

Nadir growth hormone (GH) levels after oral glucose tolerance test (OGTT) as well as random insulin-like growth-factor I (IGF-I) levels, given as multiples of the upper limit of normal [xULN], were used to evaluate biochemical activitiy of acromegalic patients. The development of new, more sensitive GH assays makes it necessary to reevaluate the cut off values of the GH nadir after OGTT.In a cross sectional study, we evaluated nadir GH concentrations dur...

Leptin and ghrelin are correlated to acute and chronic nutritional status. Elevated BMI and fat mass as well as food intake increase leptin levels whereas ghrelin levels are reduced. Ghrelin stimulates growth hormone (GH) secretion. The influence of GH on ghrelin is unclear. Since GH reduces fat mass and is dependent on nutritional status we performed this prospective cross sectional study in order to investigate any interaction between GH, ghrelin and leptin levels in active ...

Immunohistochemistry is commonly performed on tumour specimen obtained during transsphenoidal surgery, but its predictive value for clinical outcome is largely unknown. The aim of this study was to compare clinical and biochemical outcome characteristics after surgery with histological tumour properties. This was achieved by matching data from the German Acromegaly Register with those of the Pituitary Tumour Registry of the German pituitary working group. From 285 out of 1543 ...