Thursday, June 28, 2012

Cushing's syndrome

Betul A. Hatipoglu MD*

Article first published online: 27 JUN 2012

DOI: 10.1002/jso.23197

Keywords:

Cushing's syndrome; adrenal carcinoma; virilization; hypercortisolism

Abstract

Cushing's syndrome (CS) results from prolonged exposure to elevated endogenous cortisol. Majority of cases are caused by ACTH, pituitary, or ectopic origin. Primary adrenal hypersecretion is 15–20% caused by adenomas, carcinomas (ACC), and rarely by nodular adrenocortical disease. CS presents with all typical features.

Commonly recommended initial testing are urinary free cortisol, late-night salivary cortisol, and 1-mg overnight dexamethasone suppression test (DST). Imaging is the key to diagnosis. CS continues to pose diagnostic and therapeutic challenges; life-long follow-up is mandatory.

J. Surg. Oncol © 2012 Wiley Periodicals, Inc.

Read this article at Wiley Online Publications

Thursday, June 28, 2012

Genetic variant is linked to obesity and insulin resistance

A large study in people at risk of diabetes has found a direct association between the presence of a small genetic alteration in a hormone receptor and increased body fat and insulin resistance. The results, to be presented Tuesday at The Endocrine Society's 94th Annual Meeting in Houston, suggest an adverse role for a previously described genetic variant, the BclI polymorphism.

"Our findings support the idea that even small variations in hormone receptor sensitivity can have metabolic implications, such as obesity or diabetes," said co-author Bastiaan Havekes, MD, PhD, of Maastricht University Medical Center, Maastricht, the Netherlands.

"Endocrinologists should not just focus on hormone levels themselves. Taking into account hormone receptor sensitivity could help in better understanding hormone-mediated effects on metabolism," he said.

The inherited BclI polymorphism occurs in the gene encoding for the glucocorticoid receptor, which controls the actions of glucocorticoids, steroid hormones that affect every system in the body. This small variant makes the receptor more sensitive to glucocorticoids, resulting in greater effects with similar hormone levels, Havekes said.

The effects of this change appear to be similar to, although much smaller than, the excessive glucocorticoid exposure that can occur from certain medications or diseases, Havekes said. Such excess exposure can result in weight gain, especially around the abdomen, as well as in disturbed blood sugar metabolism. This exposure most often occurs from long-term use of prednisone or other glucocorticoid medications, which are widely used to treat inflammatory diseases or to suppress the immune system. It also can result from endocrine diseases such as Cushing's syndrome. Cushing's causes overproduction in the body of the glucocorticoid cortisol, often called the "stress hormone."

Patients in this study, however, did not have known excess exposure to glucocorticoids, according to Havekes. He and his co-investigators studied 1,228 adults who participated in one of two Dutch studies focusing on diabetes in the general population. More than half of the study participants had either prediabetes (23 percent) or Type 2 diabetes (33 percent). All subjects underwent genetic testing for the BclI polymorphism.

The researchers found that 519 subjects did not carry the alternative form of the gene, or G-allele, for the BclI polymorphism on either chromosome. Another 540 subjects were heterozygous carriers, meaning the G-allele was present on one of the two chromosomes. The remaining 169 subjects were homozygous carriers and therefore carried the G-allele on both chromosomes.

Those who had the BclI polymorphism on each chromosome had a significantly higher body mass index and larger waist and hip circumferences than did noncarriers or heterozygous carriers, the authors reported. This was reflected by greater insulin resistance, meaning that insulin is less effective at lowering blood glucose (blood sugar).

"Determining an individual's genetic risk profile for metabolic disease is of paramount importance to prevent development of cardiovascular diseases," he said. "Future studies concerning cardiovascular risk profiling should perhaps consider the BclI polymorphism."

Provided by The Endocrine Society and posted by MedicalXPress.com

Wednesday, June 27, 2012

Cortendo Receives Positive Orphan Drug Opinion from EMA for NormoCort for Cushing’s Disease

Cortendo AB with support from their preclinical development partner, PharmaDirections, Inc. received a positive opinion from the European Medicines Agency for NormoCort.

Radnor, PA (PRWEB) June 26, 2012

Cortendo AB [ticker: CORT on the Norwegian NOTC-A], a biopharmaceutical Corporation focused on the development of new therapies in the field of Metabolic Diseases, obtained a positive opinion by the European Medicines Agency's Committee for Orphan Medicinal Products, on its application for orphan drug designation for NormoCort (COR-003) for the treatment of hypercortisolism (Cushing’s Syndrome). The positive opinion of the COMP for NormoCort has now been forwarded to the EU commission for final approval and publication in the EU community register. With orphan drug designation granted in the US by the FDA in March and now with this positive opinion from the EU’s COMP, Cortendo is well positioned to move NormoCort into pivotal global clinical trials in Cushing’s Syndrome.

Cortendo is a biopharmaceutical company that relies in part on quality consultants and CRO’s to support the research and development of its pipeline. For the past year, Cortendo has contracted with PharmaDirections for a number of key services ranging from CMC to US and European Regulatory support. PharmaDirections’ regulatory services have ranged from the successful preparation and support to orphan drug designation applications in both the US and Europe to support with both IND and CTA preparation. “Cortendo has appreciated the high quality of support particularly in the areas of regulatory, CMC, and project management services offered by PharmaDirections”, said Dr. Ted Koziol, COO of Cortendo.

“Our Cortendo relationship is a great example of a virtual company using outsourced resources to their maximum advantage” said Dr. Richard Soltero, President of PharmaDirections.

About Cortendo:

Cortendo is a pioneer in the field of cortisol inhibition. The development of the lead drug candidate NormoCort (COR-003), the 2S,4R-enantiomer of ketoconazole, has been directed to Cushing’s Syndrome. The company’s strategy is to focus its resources to opportunities where the path to commercialization or partnership is clear and relatively near-term. Strategically, Cortendo’s business model is to commercialize relevant opportunities in the United States while partnering its assets ex-US. Backed by a highly experienced leadership team Cortendo has plans to continue to implement its pipeline expansion efforts in osteoarthritis and diabetes, as well as other near term revenue opportunities.

About PharmaDirections:

PharmaDirections, Inc. provides pharmaceutical consulting and project management services with a focus on preclinical development, formulation development and CMC, and regulatory affairs. The company was founded in 2003 and is based in Cary, North Carolina.

From PRWeb