Tirzepatide (Mounjaro®): a new tool in the treatment of obesity

Jean-Paul Thissen Published in the journal : April 2025 Category : Endocrinologie et Nutrition

Tirzepatide (TZP) is the first dual agonist, targeting both GLP-1 and GIP receptors, developed for obesity and type 2 diabetes mellitus treatment. TZP is more potent regarding glycemic control and weight loss than GLP-1R mono-agonists (GLP-1RAs) already on the market. Weight loss results almost exclusively from caloric intake reduction. TZP also exerts beneficial effects on the different parameters of the cardiovascular risk profile. TZP is characterized by a good tolerance and a satisfactory safety profile, comparable to that of GLP-1RAs. As with GLP-1RAs, its use raises many questions (cost and possible reimbursement, duration of use, very long-term safety, place in relation to lifestyle and dietary treatment, place in relation to bariatric surgery, etc.). Although all of these questions deserve to be addressed, TZP represents a new step in the development of increasingly effective drugs to treat obesity and its comorbidities.

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Antidiabetic drugs (gliflozins, GLP-1 agonists, GIP-GLP-1 co-agonists) and nephroprotection: what underlies the 2025 American Diabetes Association guidelines

Martin Buysschaert, Vanessa Preumont, Nathalie Demoulin, Benoît Buysschaert Published in the journal : April 2025 Category : Endocrinologie et Nutrition

Diabetic nephropathy is the leading cause of end stage renal disease. Its conventional prevention is based on glycemic and blood pressure optimization, including the use of renin-angiotensin axis blockers. 

Recent trials have demonstrated a nephroprotective effect of new classes of antihyperglycemic agents, in particular gliflozins, GLP-1 agonists and, on basis of preliminary data, tirzepatide, in addition to their established antihyperglycemic and cardiovascular effects. 

Therapeutic guidelines emerging from the American Diabetes Association (ADA) in 2025 are based upon these observations and results. 

The aim of this article is to review the current strategy of renal complication in patients with type 2 diabetes focused on these new treatments.

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Thyroid-associated orbitopathy, review of the literature

Natalia Baczewska, Antonella Boschi, Maria-Cristina Burlacu Published in the journal : April 2025 Category : Endocrinologie et Nutrition

Thyroid-associated orbitopathy is the most common extra-thyroid manifestation of Graves’ disease. It affects the orbital and peri-orbital tissues, leading to signs and symptoms such as eyelid edema, exophthalmos, and diplopia. The prevalence varies, affecting approximately 25 to 50% of patients with Graves’ disease. The pathogenesis of thyroid orbitopathy involves, among other factors, autoantibodies directed against TSH receptors present on orbital fibroblasts. Activation of these orbital fibroblasts results in the production of pro-inflammatory cytokines and glycosaminoglycans, causing inflammation and proliferation of orbital connective tissues, as well as adipogenesis. Treatments for orbitopathy in its active phase include general measures such as symptomatic ophthalmologic treatment (artificial tears, sun protection, headboard elevation), rapid and sustained restoration of euthyroidism, and smoking cessation. Depending on the severity, selenium is used for mild cases, while anti-inflammatory and immunosuppressive treatments are used for moderate to severe cases (sometimes with orbital radiotherapy). Decompression surgery is considered for forms that threaten visual prognosis. Despite recent therapeutic advances, the management of thyroid orbitopathy remains complex and requires a multidisciplinary approach. Future research is focused on understanding the underlying immune mechanisms and developing more targeted and effective treatments.

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New developments in Endocrinology in 2024

Stefan M Constantinescu, Raluca M Furnica, Michel P Hermans, Audrey Loumaye, Fabian O Lurquin, Laura Orioli, Vanessa Preumont, Orsalia Alexopoulou Published in the journal : February 2025 Category : Endocrinologie et Nutrition

In Endocrinology, the year 2024 has been marked by new international recommendations on the management of iatrogenic adrenal insufficiency in patients treated with glucocorticoids. Clear strategies for biological monitoring have been defined, enabling the optimization of patient follow-up and avoidance of the adrenal insufficiency risk.

Regarding diabetes complications, two major studies have opened new avenues for the prevention of diabetic kidney disease and diabetic retinopathy. The FLOW study demonstrated the nephroprotective effect of semaglutide, a GLP-1 agonist, with a 24% reduction in the risk of major renal events in diabetic patients with chronic kidney disease at high risk of progression. Furthermore, the LENS study confirmed the role of fenofibrate in preventing the progression of diabetic retinopathy, reducing the risk of visual deterioration by 27% in diabetic patients with early signs of retinal involvement. 

Additionally, tirzepatide, the first dual agonist of GLP-1 and GIP receptors, is now available in Belgium for the treatment of type 2 diabetes and obesity. Superior to semaglutide in terms of weight loss and glycemic control, it has demonstrated significant metabolic benefits in the SURPASS and SURMOUNT studies. It also showed promising effects in reducing cardiovascular complications and sleep apnea. 

Finally, teplizumab, an anti-CD3 antibody, represents a major advance in the preventive treatment of type 1 diabetes, which has been confirmed in 2024. By targeting T lymphocytes involved in the destruction of pancreatic beta cells, it significantly delays disease onset in at-risk patients and preserves beta-cell function in newly diagnosed patients.

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Innovations in 2023 in Endocrinology and Diabetes

Fabian O. Lurquin, Stefan Matei Constantinescu, Raluca Maria Furnica, Michel P. Hermans, Audrey Loumaye, Dominique Maiter, Laura Orioli, Vanessa Preumont, Jean-Paul Thissen, Orsalia Alexopoulou Published in the journal : February 2024 Category : Endocrinologie et Nutrition

In 2023 there were numerous groundbreaking developments in diabetology, metabolic diseases and endocrinology. In the field of diabetes, recommendations for managing cardiovascular diseases (CVDs) in patients with Type 2 diabetes were revised, and a new algorithm for estimating cardiovascular risks in primary prevention was introduced. In addition, patients with diabetes mellitus eligible for a category B convention may claim full reimbursement for a continuous interstitial glucose measurement system using a subcutaneous sensor. The widespread use of glucagon-like peptide-1 (GLP-1) receptor agonists for the therapeutic management of obesity was a notable feature of 2023. In the field of endocrine pathologies, new international guidelines on prolactinoma treatment have been published. Moreover, the 2016 recommendations on the management of adrenal incidentalomas, issued by the European Society of Endocrinology (ESE) in collaboration with the European Network for the Study of Adrenal Tumors (ENSAT), have been updated

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2021 innovations in endocrinology and diabetology

Maria-Cristina Burlacu, Raluca-Maria Furnica, Stefan Matei Constantinescu, Orsalia Alexopoulou, Dominique Maiter, Michel P Hermans, Jean-Paul Thissen Published in the journal : February 2022 Category : Endocrinologie et Nutrition

The 2021 year in endocrinology, diabetology, and metabolic diseases saw the arrival of new medical treatments, notably for Cushing's syndrome and hypercholesterolemia, in addition to the revival of treatments that were already known, yet without finding their correct place within our therapeutic arsenal.

All these treatments were likely promising, because of being effective and well tolerated. Although some of them are not yet available in Belgium, we thought it useful to actually discuss them, as they well illustrate the continuing dynamism of clinical research within this sector, whereas our activities have been somewhat thwarted by the current pandemic. We sincerely hope you enjoy the reading!

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Advocacy for improvements in clinical nutrition training during the medical cursus

Jean-Paul Thissen, Anne Boucquiau, Nicolas Paquot, Jean-Charles Preiser Published in the journal : April 2021 Category : Endocrinologie et Nutrition

The knowledge of physicians in the field of nutrition mostly lags far behind the patients’ expectations, without complying with official recommendations. However, poor-quality nutrition and diet represent the first cause of mortality worldwide. As a result of insufficient training and poor awareness, many physicians do not meet patients’ expectations. Moreover, nutrition is often perceived as of low scientific value, thereby opening the area to numerous pseudo-scientific errancies. We advocate an overall improvement in nutrition training during the medical cursus, including transversal integration of nutritional insights into medical courses, in addition to the recognition of post-university training validated by academic authorities. A clarification of the roles and recognition of the competency framework are urgently required in order to further promote the professionalism of nutritional counselling.

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Management of diabetic foot infections: practical recommendations and recommended use of antibiotics

Laura Orioli, Bernard Vandeleene, Dan Putineanu, Caroline Briquet, Hector Rodriguez-Villalobos, Jean-Cyr Yombi Published in the journal : September 2020 Category : Endocrinologie et Nutrition

Infections are a common complication of the diabetic foot ulcer. They are recognized as a factor of poor prognosis for both the foot and the patient. Their management is complex, requiring multidisciplinary collaboration. Our article summarizes the general principles of the management of diabetic foot infections, mainly based on the new recommendations of the International Working Group for the Diabetic Foot (IWGDF). It also presents the recommendations on the use of antibiotics, based on the PEDIS classification, as applied in the Saint-Luc University Hospital.

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Endoscopic ultrasound-guided radiofrequency ablation, insulinoma

Raluca Maria Furnica, Ivan Borbath, Bernard Vandeleene, Dominique Maiter, Pierre Deprez Published in the journal : February 2020 Category : Endocrinologie et Nutrition

Endoscopic utrasound-guided ablation: an interesting alternative in the treatment of benign localized insulinomas Endoscopic ultrasound-guided radiofrequency (RF) is an innovative technique that may represent an interesting and less invasive alternative for the radical treatment of patients with a benign insulinoma. Since June 2018, we have been able to treat at the Cliniques universitaires Saint-Luc four patients with a localized benign insulinoma using a Starmed RF electrode (Taewong). The effectiveness of the treatment was evident immediately after the procedure in all patients. Among all pancreatic neuroendocrine tumors, insulinomas are probably the best indication for endoscopic ultrasound-guided RF ablation due to their small size and low malignant potential, as well as the technique’s relative safety.

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Tetraparesis and thyrotoxicosis

Louise Ghosez (1), Christian Davin (2), Karim Bochouari (3), David Guery (4), Isabelle Paris (4), Ides Colin (4), Pol Vincent (3) Published in the journal : January 2019 Category : Endocrinologie et Nutrition

Thyrotoxic hypokalemic periodic paralysis is rare, especially in Caucasians. Affected patients have muscle weakness secondary to hypokalemia associated with hyperthyroidism. We report the case of a 23-year-old patient who was admitted to the emergency department for sudden-onset tetraparesis without any trauma. Tetraparesis was accompanied by severe hypokalemia. Etiologic investigations have led to the diagnosis of Graves' disease. Hypokalemic periodic paralysis is a rare neuromuscular complication of hyperthyroidism. It originates from hypokalemia secondary to intracellular transfer caused by both Na+/K+ ATPase pump overstimulation and abnormal potassium efflux due to a mutation in the potassium efflux channel. The clinical management consists in conservative potassium supplementation and administration of ß-blockers. The neuromuscular deficit is transient and reverses rapidly after the correction of hyperthyroidism.

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