Reactive oxygen species are crucial to normal cell function, but are also part of the pathogenesis of multiple modern maladies. As such, sensitive, fast, and reliable methods of appreciating redox status are needed. We aimed to optimize the Amplex Red (AR) and ferric–xylenol orange (FOX) methods using human serum samples, rat tissue homogenates, and mitochondrial preparations. For AR, we intended to reduce probe concentration, maintaining method sensitivity, as well as extending its use from isolated lipoproteins samples, and readjust it for a high‐throughput application. Also, we evaluated the usefulness of a modified xylenol orange‐based spectrophotometric protocol, comparing and contrasting these methods in terms of clinical relevance and suitability for their further use in assessing redox status of various biological samples in different pathological conditions. Our results show that these optimized protocols are suitable for complex in vivo studies, as they require low quantities of sample and reagents, and are sensitive, rapid, and economical, with the option of adapting them for high‐throughput analysis. For a better assessment of oxidative status of serum‐derived samples, the two methods can be used concurrently, while for tissue‐derived ones, either can be employed for the measurement of a global redox status.
Type 2 diabetes, one of the most frequent chronic diseases, has an important effect on bone metabolism, with most studies reporting an increased prevalence of fractures in these patients despite an apparently increased bone mineral density. Most probable explanation is an alteration of bone structure/ quality with increased fragility but the different diabetes medications influence the risk of fracture. While metformin and incretin-based therapies are safe, thiazolidinediones and canagliflozin (sodium-glucose cotransporter-2 inhibitor) negatively impact bone metabolism and should be avoided in subjects at increased risk of fractures. Insulin and sulphonylureas are generally safe but can increase the risk of hypoglycemia and falls with subsequent traumatic fractures. Their combination should be avoided, especially in elderly subjects.
Comment on: Sorli C, Harashima SI, Tsoukas GM, et al. Efficacy and safety of once-weekly semaglutide monotherapy versus placebo in patients with type 2 diabetes (SUSTAIN 1): a double-blind, randomised, placebo-controlled, parallel-group, multinational, multicentre phase 3a trial. Lancet
Women with gestational diabetes mellitus (GDM) have an increased lifetime risk of developing type 2 diabetes mellitus (T2DM). GDM has a substantial impact on maternal and foetal short and long-term health. Risk factors for GDM may be genetic or nongenetic and have been analysed in numerous studies. Researches in recent years allowed the identification of other risk factors for GDM except for those already known.Knowledge and identification of all risk factors for GDM allows the elaboration of a prevention strategy of T2DM, it may influence the screening, diagnosis, and, subsequently, treatment modalities for this disease. key words: gestational diabetes mellitus, type 2 diabetes mellitus, risk factors
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