Skin manifestations in rare types of diabetes and other endocrine conditions

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Abstract

As the most visible and vulnerable organ of the human organism, the skin can provide an impression of its state of health. Rare forms of diabetes and endocrinopathies are often diagnosed late or primarily misinterpreted due to their rarity. Skin peculiarities associated with these rare diseases may be indicative of the underlying endocrinopathy or form of diabetes. At the same time, rare skin changes in diabetes or endocrinopathies can also be a major challenge for dermatologists, diabetologists and endocrinologists in optimal patient and therapy management. Active collaboration between these different specialist groups can therefore lead to increased patient safety, better therapeutic success and more targeted diagnostics.

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The molecular basis for impaired hypoxia-induced VEGF expression in diabetic tissues.

Michael Brownlee, Geoffrey C Gurtner, Yubin Shi … (2009)

Diabetes is associated with poor outcomes following acute vascular occlusive events. This results in part from a failure to form adequate compensatory microvasculature in response to ischemia. Since vascular endothelial growth factor (VEGF) is an essential mediator of neovascularization, we examined whether hypoxic up-regulation of VEGF was impaired in diabetes. Both fibroblasts isolated from type 2 diabetic patients, and normal fibroblasts exposed chronically to high glucose, were defective in their capacity to up-regulate VEGF in response to hypoxia. In vivo, diabetic animals demonstrated an impaired ability to increase VEGF production in response to soft tissue ischemia. This resulted from a high glucose-induced decrease in transactivation by the transcription factor hypoxia-inducible factor-1alpha (HIF-1alpha), which mediates hypoxia-stimulated VEGF expression. Decreased HIF-1alpha functional activity was specifically caused by impaired HIF-1alpha binding to the coactivator p300. We identify covalent modification of p300 by the dicarbonyl metabolite methylglyoxal as being responsible for this decreased association. Administration of deferoxamine abrogated methylglyoxal conjugation, normalizing both HIF-1alpha/p300 interaction and transactivation by HIF-1alpha. In diabetic mice, deferoxamine promoted neovascularization and enhanced wound healing. These findings define molecular defects that underlie impaired VEGF production in diabetic tissues and offer a promising direction for therapeutic intervention.

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Adrenal insufficiency

Eystein Husebye, Simon Pearce, Nils Krone … (2021)

Adrenal insufficiency can arise from a primary adrenal disorder, secondary to adrenocorticotropic hormone deficiency, or by suppression of adrenocorticotropic hormone by exogenous glucocorticoid or opioid medications. Hallmark clinical features are unintentional weight loss, anorexia, postural hypotension, profound fatigue, muscle and abdominal pain, and hyponatraemia. Additionally, patients with primary adrenal insufficiency usually develop skin hyperpigmentation and crave salt. Diagnosis of adrenal insufficiency is usually delayed because the initial presentation is often non-specific; physician awareness must be improved to avoid adrenal crisis. Despite state-of-the-art steroid replacement therapy, reduced quality of life and work capacity, and increased mortality is reported in patients with primary or secondary adrenal insufficiency. Active and repeated patient education on managing adrenal insufficiency, including advice on how to increase medication during intercurrent illness, medical or dental procedures, and profound stress, is required to prevent adrenal crisis, which occurs in about 50% of patients with adrenal insufficiency after diagnosis. It is good practice for physicians to provide patients with a steroid card, parenteral hydrocortisone, and training for parenteral hydrocortisone administration, in case of vomiting or severe illness. New modes of glucocorticoid delivery could improve the quality of life in some patients with adrenal insufficiency, and further advances in oral and parenteral therapy will probably emerge in the next few years.

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The diabetic foot: Pathophysiology, evaluation, and treatment

Dennis Bandyk (2018)

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Author and article information

Journal

Journal ID (nlm-ta): Endocr Connect

Journal ID (iso-abbrev): Endocr Connect

Journal ID (hwp): EC

Title: Endocrine Connections

Publisher: Bioscientifica Ltd (Bristol )

ISSN (Electronic): 2049-3614

Publication date (Electronic): 04 April 2023

Publication date (Electronic preprint): 04 April 2023

Publication date Collection: 01 July 2023

Volume: 12

Issue: 7

Electronic Location Identifier: e220410

Affiliations

[1 ]Auf Der Bult Children’s Hospital , Centre for Paediatric Endocrinology, Diabetology, and Clinical Research, Hannover, Germany

[2 ]Auf Der Bult Children’s Hospital , Department of Paediatric Dermatology, Hannover, Germany

[3 ]Padua University Hospital , Clinica Medica 3, Department of Medicine (DIMED), Padova, Veneto, Italy

Author notes

Correspondence should be addressed to F Reschke: felix.reschke@ 123456hka.de

^*(P Maffei and T Danne contributed equally to this work)

This paper forms part of a special series collated by European Reference Network on Rare Endocrine Conditions celebrating its fifth year. The guest editors for this section are Violeta Iotova, Jérôme Berherat, and George Mastorakos.