Food-dependent Cushing syndrome: a new entity of organic hypercorticism

Posted on July 9, 2015 by MaryO
Matejka G, et al. Rev Med Interne. 1996.

Abstract

Diagnosis of Cushing’s syndrome is quite difficult in endocrinology. Spontaneous Cushing’s syndrome is usually divided into two subgroups, one which is dependent on corticotropin (ACTH) and another one which is not.

In the first class are Cushing’s disease, the ectopic corticotropin syndrome and the rare ectopic corticotropin-releasing hormone (CRH) syndrome; these ACTH-dependent Cushing’s syndrome have usually diffusely enlarged adrenal glands.

In the second class are cortisol producing unilateral adrenocortical adenomas or carcinomas, and the recent Cushing’s syndrome with food dependent periodic hormonogenesis.

This food dependent Cushing’s syndrome is an ACTH-independent Cushing’s syndrome with multinodular enlargement of both adrenal glands. Pathogenesis is an aberrant adrenal sensitivity to physiologic secretion of gastric inhibitory peptide (GIP). Ectopic expression of GIP receptors on adrenal cells involve pathologic food induced cortisol secretion.

Food dependent Cushing’s syndrome is a new cause of Cushing’s syndrome. Food induced cortisol secretion may have to be explored in the ACTH-independent Cushing’s syndrome.

PMID

8758532 [PubMed – indexed for MEDLINE]

Full text

Full text from provider (Elsevier Science) Article in French.

From http://www.ncbi.nlm.nih.gov/m/pubmed/8758532/

Biography of a Food-Dependent Cushing’s patient

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Cushing’s Syndrome

Posted on May 22, 2015 by MaryO
Prof André Lacroix, MDcorrespondence,  Richard A Feelders, MD, Constantine A Stratakis, MD, Lynnette K Nieman, MD
Published Online: 21 May 2015
DOI: http://dx.doi.org/10.1016/S0140-6736(14)61375-1

Summary

Chronic exposure to excess glucorticoids results in diverse manifestations of Cushing’s syndrome, including debilitating morbidities and increased mortality.

Genetic and molecular mechanisms responsible for excess cortisol secretion by primary adrenal lesions and adrenocorticotropic hormone (ACTH) secretion from corticotroph or ectopic tumours have been identified. New biochemical and imaging diagnostic approaches and progress in surgical and radiotherapy techniques have improved the management of patients.

The therapeutic goal is to normalise tissue exposure to cortisol to reverse increased morbidity and mortality. Optimum treatment consisting of selective and complete resection of the causative tumour is necessay to allow eventual normalisation of the hypothalamic-pituitary-adrenal axis, maintenance of pituitary function, and avoidance of tumour recurrence. The development of new drugs offers clinicians several choices to treat patients with residual cortisol excess.

However, for patients affected by this challenging syndrome, the long-term effects and comorbidities associated with hypercortisolism need ongoing care.

Read the entire article (there is a fee of $31.50US) here.

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Severe psychosis due to Cushing’s syndrome in a patient with a carcinoid tumour in the lung

Posted on April 30, 2015 by MaryO

Severe psychosis in patients with Cushing’s syndrome is a rare occurrence and can be extremely resistant to medical therapy. We describe a case of a 51-year-old Afro-Caribbean female patient, with refractory severe hypertension (initially resistant to polypharmacy) and gradual development of severe psychosis secondary to ectopic Cushing’s syndrome, who was subsequently diagnosed to have a carcinoid tumour in her lung.

Her psychotic episodes – secondary to hypercortisolism and initially refractory to the medical therapy – subsided only after the resection of the carcinoid tumour in her right lower pulmonary lobe. Early localization and appropriate surgical resection of the ectopic ACTH-secreting tumour can be of immense value to the successful alleviation of the psychotic episodes of the patients with ectopic Cushing’s syndrome.

Author: Mohamad BabaDebamalya Ray
Credits/Source: World Journal of Surgical Oncology 2015, 13:165

From http://7thspace.com/headlines/507616/severe_psychosis_due_to_cushings_syndrome_in_a_patient_with_a_carcinoid_tumour_in_the_lung_a_case_report_and_review_of_the_current_management.html

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Myth: “All types of Cushing’s are the same”

Posted on December 11, 2014 by MaryO

Myth: “All types of Cushing’s are the same”

myth-busted

Fact: In the words of our dear friend and advocate, Robin Ess, “There are many genetic varieties with quite a few discovered in the past couple of years. Plus, there are several types such as adrenal, ectopic, and pituitary. And so on”….Amazingly, some doctors do not realize that there are different varieties of Cushing’s and that the symptoms can come from a different source.

For instance, a doctor might rule out a pituitary tumor and completely dismiss the patient, even with biochemical evidence of Cushing’s. That doctor, instead of dismissing the patient, should thoroughly look for other potential sources, such as an adrenal tumor, or yet another source. Did you know that tumors on one’s lungs can even cause Cushing’s? Most people don’t know that.

For more information about the different types of Cushing’s, please read: http://www.mayoclinic.org/diseases-conditions/cushing-syndrome/basics/causes/con-20032115

Another great article regarding ectopic Cushing’s can be found here: http://www.nejm.org/doi/full/10.1056/NEJM199809243391304#.VH-80v5f2s8.facebook

MaryONote: Folks might be interested in listening to this podcast episode with Jayne, a Cushing’s patient who had pituitary surgeries and a bilateral adrenalectomy before finding the true source of her ectopic Cushing’s – lung tumors.

http://www.blogtalkradio.com/cushingshelp/2008/01/31/tentative-date-an-interview-with-jayne-cyclical-cushings-patient

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Cushings Syndrome/Disease can be healed or cured through change in diet or exercise

Posted on December 10, 2014 by MaryO

Myth: Cushing’s Syndrome/Disease can be healed or cured through change in diet or exercise.

myth-busted

Fact: NO! Caloric intake or lack of exercise has NO impact on weight gain and/ or loss in persons with Cushing’s.

Saying that someone “cheated” on their diet may seem reasonable to some as a reason for weight gain but I assure you that a candy bar or a piece of pie does not make a person with Cushing’s gain weight or get sick. Excess cortisol is the reason for Cushing’s symptoms. Treating the disease is the only way to alleviate symptoms.

The first line of treatment with the highest rate of remission is currently surgery to remove the tumor (s) from the pituitary, adrenal gland, or ectopic source.

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