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News and Events

1. Successful 2021 EULAR Congress

The group had a successful showing at the 2021 European Alliance of Associations for Rheumatology (EULAR) Virtual Congress with 8 abstracts accepted for oral or poster presentations. Find out more

2. New DFG funded project on the association between iron levels and bone health

Highlight text: “We are thrilled to be a part of a newly funded collaboration project through the German Research Foundation (Deutsche Forshungsgemeinschaft [DFG]). The FerrOs research team will investigate the relationship between iron deficiency and iron overload on bone health and fractures. Find out more

3. New research published in JAMA Network Open and Highlighted by ETH News

This research led by PhD Candidate Adrian Martinez de la Torre identified that there was an increase in the number of paracetamol-related poisonings reported to the National Poisong Centre in Switzerland following the availability of high-dose 1,000 milligram (1 gram) oral paracetamol tablets. Find out more

4. Research featured in Rheumatology Republic

The research presented by PhD Candidate Enriqueta Vallejo-Yagüe titled “Thrombembolic safety profile of tofacitinib and baricitinib: an analysis of the WHO VigiBase” at the European League Against Rheumatism (EULAR) eCongress was featured in the online rheumatology journal, Rheumatology Republic. Find out more
 

5. Special Issue on osteoporosis treatment

Prof. Burden will co-guest edit a special issue in the Journal of Clinical Medicine (IF 5.7) on Osteoporosis treatment: recent developments and ongoing challenges. Find out more


Publications

Bone fragility in diabetes: novel concepts and clinical implications
Lorenz C. Hofbauer L, Björn Busse, Richard Eastell, Serge Ferrari, Morten Frost, Ralph Müller, Andrea Burden, Fernando Rivadeneira, Nicola Napoli and Martina Rauner
The Lancet Diabetes & Endocrinology, vol. 10: no. 3, pp. 207-220, Oxford: Elsevier, 2022.

Increased fracture risk represents an emerging and severe complication of diabetes. The resulting prolonged immobility and hospitalisations can lead to substantial morbidity and mortality. In type 1 diabetes, bone mass and bone strength are reduced, resulting in up to a five-times greater risk of fractures throughout life. In type 2 diabetes, fracture risk is increased despite a normal bone mass. Conventional dual-energy x-ray absorptiometry might underestimate fracture risk, but can be improved by applying specific adjustments. Bone fragility in diabetes can result from cellular abnormalities, matrix interactions, immune and vascular changes, and musculoskeletal maladaptation to chronic hyperglycaemia. This Review summarises how the bone microenvironment responds to type 1 and type 2 diabetes, and the mechanisms underlying fragility fractures. We describe the value of novel imaging technologies and the clinical utility of biomarkers, and discuss current and future therapeutic approaches that protect bone health in people with diabetes.

Drug Triggers and Clinic of Acute Generalized Exanthematous Pustulosis (AGEP): A Literature Case Series of 297 Patients
Enriqueta Vallejo-Yagüe, Adrian Martinez-De la Torre, Omar S. Mohamad, Shweta Sabu and Andrea Burden
Journal of Clinical Medicine, vol. 11: no. 2, pp. 397, Basel: MDPI, 2022.

Acute generalized exanthematous pustulosis (AGEP) is a rare skin reaction, commonly caused by drugs. Available evidence mostly relies on small studies or case reports. We collected published AGEP case reports and, subsequently, described the patient characteristics, suspect and concomitant drugs, time to onset, disease management, and clinical prognosis. This study included 297 AGEP patients (64.3% women) obtained from 250 published case reports or case series with individual patient data. AGEP affected patients of all ages, but the majority of patients (88.2%) were ≥25 years old. The most frequently reported suspect drugs were anti-infectives for systemic use (36.5%), particularly antibacterials for systemic use (31.0%), and especially beta-lactam antibacterials (18.3%) and macrolides (4.3%). Other frequent suspect drugs were antineoplastics (12.2%), and anti-inflammatory/anti-rheumatic products (5.2%) plus hydroxychloroquine (12.8%). Mean time to onset was 9.1 days (standard deviation SD 13.94). Some patients developed fever (64.3%) and systemic involvement (18.9%), and most patients (76.4%) received pharmacological treatment for AGEP. Seven patients died, although five of them were already critically ill prior to AGEP. In conclusion, antibiotics remain the most common suspected cause of AGEP. While case mortality rate may be up to 2.5%, disentangling the role of AGEP on the fatal outcome from the role of the preexisting health conditions remains challenging.

Assessment of minor health disorders with decision tree-based triage in community pharmacies
Dominik Stämpfli, Birgit A. Winkler, Simona Berardi Vilei and Andrea Burden
Research in Social and Administrative Pharmacy, vol. 18: no. 5, pp. 2867-2873, Philadelphia, PA: Elsevier, 2021.

Background Triaging in community pharmacies can lower the burden of minor health disorders on other primary health care settings. The netCare service, introduced in 2012 by the Swiss association of pharmacists, provides community pharmacists with 27 decision trees for the triage of minor health disorders. Objectives (1) to describe the utilization and symptom resolving rate of decision trees in community pharmacies; (2) to identify the need for additional decision trees. Methods A descriptive, explorative analysis was conducted of netCare consultations between January 2019 and March 2020, as documented in phS-net, a service platform for public pharmacies. Client characteristics, weekdays, recommended course of action, availability of a general practitioner, and hypothetical course of action if netCare would not have been available were investigated. Follow-up information was assessed for resolution of symptoms and prevention of needing additional services. Data from consultations with empty assessment forms were used to identify minor health disorders in need of an additional decision tree. Results Information on 4256 performed netCare consultations were identified over a 14-month observation period, resulting in an average of 284 decision tree consultations per month in Switzerland. Customers were mainly female (n = 3253, 76.4%) with a mean age of 40.7 years (±18.5 years). Cystitis (39.5%), conjunctivitis (19.5%), and pharyngitis (10.9%) were the primary reasons for consultation. Minor health disorders were managed by pharmacists themselves (88.2%) and achieved a resolution rate of 84.7%. Eyelid inflammations were identified as in need for an additional decision tree. Conclusion Pharmacist-led structured triaging services in Switzerland led to an 84.7% resolution rate of minor health disorders, thereby identifying the potential for pharmacists to minimize the demand on other primary health care providers.

The association between bariatric surgery and cataract: a propensity score-matched cohort study
Theresa Burkard, Dag Holmberg, Anders Thorell, Farhad Hafezi and Andrea Burden
Surgery for Obesity and Related Diseases, vol. 18: no. 2, pp. 217-224, New York, NY: Elsevier, 2021.

Background Obesity is considered a risk factor for cataracts. The association between weight loss and a cataract among patients with obesity has not been assessed to date. Objectives To assess the association between weight loss following bariatric surgery and cataracts. Setting Nationwide Swedish healthcare registries between 2006 and 2019. Methods We performed a population-based cohort study. Patients aged 40–79 years who underwent bariatric surgery were matched on their propensity score (PS) to up to 2 patients with obesity (“unexposed patients”). Cox proportional hazard regression analyses calculated hazard ratios (HRs) and 95% confidence intervals (CIs) of developing cataracts following bariatric surgery, compared with unexposed patients. Subgroup analyses by age, sex, bariatric surgery type, and duration of follow-up were conducted. Results In total, 22,560 bariatric surgery patients were PS-matched to 35,523 unexposed patients. The risk of cataracts was decreased in bariatric surgery patients compared with unexposed patients (HR .71, 95% CI .66–.76). We observed the lowest risk of cataracts among bariatric surgery patients aged 40–49 years (HR .52, 95% CI .44–.75) but a null result for patients aged ≥60 years. Gastric bypass or duodenal switch were associated with decreased risks of cataracts, whereas sleeve gastrectomy yielded a null result. Subgroups of sex and duration of follow-up showed no evidence of effect modification (hazards were proportional throughout follow-up). Conclusion Our results suggest that substantial weight loss following bariatric surgery is associated with a decreased risk of cataracts, especially if bariatric surgery was performed before age 60.

Diabetes and bone research in Europe

pharmacoepidemiology

Diabetes mellitus is a widespread metabolic disease, with negative/adverse effects on many organ systems. Diabetes also significantly affects bone health. An increased risk of bone fractures and impaired fracture healing has been observed in patients, but the mechanisms are not fully understood. In order to investigate the links between diabetes and the bone system, the EU project "FIDELIO" will run for four years starting October 2019.

FIDELIO is an EU funded training network through the Marie Curie Innovations in Training Networks program. In total 12 partner institutes, include the pharmacoepidemiology group at the ETH Zurich, will train 14 PhD students with the common goal of developing a multidisciplinary approach to investigating the connections between metabolic diseases and the bone system.

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