Lege Artis Medicinae


KISS Emese, SOLTÉSZ Pál, RÉTI Katalin, POÓR Gyula, SZEGEDI Gyula

NOVEMBER 10, 2008

Lege Artis Medicinae - 2008;18(11)

[Systemic autoimmune diseases characteristically show multiple organ involvements. Hence, Clinical manifestations and the outcome are quite variable. The survival has continuously been improving due to more sophisticated diagnostic tools and therapeutic possibilities. Despite the technical development, complications and organ manifestations may lead to emergency or often provoke permanent functional or morphologic deterioration of the affected organs. Critical situations can be directly attributed to the manifestations of the underlying disease, deterioration of the affected organs, side effects of immune suppressive therapy complications of Intercurrent or co-incidental diseases also may induce the occurrence of critical complications. The Authors describe all conditions that may lead to the development of critical situations at systemic autoimmune disease regarding different organ and organ systems. The symptoms and diagnostic possibilities are also analysed. A checklist is given about those systemic autoimmune disorders where particular critical events can be present. Medication in general and other possible immune modulator managements with beneficial effects are discussed.]



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[Incretins are hormone-like peptides secreted by specific cells of the small intestine mucosa. Their two main representatives are the glucagon-likepeptide- 1 (GLP-1 and the glucose-dependent insulinotropic peptide, (GIP) the release of which is stimulated by meals. The main action of incretins is to enhance insulin secretion following meals. They are rapidly metabolized in the circulation by the enzyme dipeptidyl peptidase IV (DPP-IV). Patients with type 2 diabetes have markedly impaired incretin-mediated insulin secretion mainly due to decreased secretion of GLP-1. Research in the last years has opened up a new therapeutic option to treat patients with type 2 diabetes. Continuous intravenous use of GLP-1 cannot be widely used in clinical practice; however, GLP-1-mimetics that have an agonist effect on the receptors but are resistant to degradation by DPP-IV have been developed. The GLP-1 agonist xenatide, due to its incretin mimetic property, stimulates postprandial insulin secretion, suppresses glucagon secretion, delays gastric emptying and increases sense of fullness thus resulting in weight reduction. In experimental settings, exenatide has a documented beta-cell protecting property. Its disadvantages include the fact that it can only be administered subcutaneously and that it has a well characterized side effect profile. On the contrary, the DPP-IV inhibiting incretin enhancers (sitagliptin, vildagliptin) can be used orally and are well tolerated. Exenatide, sitagliptin and vildagliptin are the first representatives of incretin mimetics and incretin enhancers. Sitagliptin has been available in Hungary since August, 2008. Their effect to reduce blood glucose and HbA1c should mainly be exploited in combination therapy, preferably with metformin. The availability of incretin mimetics and incretin enhancers will offer new therapeutic options for treating patients with type 2 diabetes. Nevertheless, the final assessment of these new drugs will require long-term experience in the clinical practice.]

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