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This article reviews the impact of the most cited works on distal radius fractures. Judged by the most cited works in this field, distal radius fracture research has followed other paradigm shifts in the history of science. Landmark papers showed that restoring premorbid anatomy led to better outcomes, and a plurality of fixation strategies emerged. A breakthrough in technology came with volar plating, and the new paradigm emerged precise anatomic reduction is achieved typically with volar plates, unless fragment-specific approaches are needed. This paradigm is being challenged as the association among malunion, arthritis, and function continues to be understood. The best treatment of distal radius fractures in the elderly has also evolved through time.In chronic kidney disease, parathyroid hormone (PTH), like all proteins, can undergo post-translational modifications, including oxidation. This can lead to structural and functional changes of the hormone. It has been hypothesized that currently used PTH measurement methods do not adequately reflect PTH-related bone and cardiovascular abnormalities in chronic kidney disease owing to the presence of oxidized, biologically inactive PTH in the circulation. Ursem et al. now report a strong correlation between serum non-oxidized and total PTH, and comparable associations with histomorphometric and circulating bone turnover markers, pleading against this hypothesis.In chronic kidney disease, the arterial wall undergoes complex remodeling, which leads to aortic stiffness. This causes increased cardiac workload and enhanced pulse pressure transmission into microcirculation, leading to microvascular damage and organ dysfunction. Beyond regulation of vascular tone, endothelium plays a key role in coagulation. In hemodialysis patients, Tran et al. show that the ongoing coagulation activity is associated with aortic stiffness. In contrast, anticoagulant factors are increased, explaining reduced endogenous thrombin potential and the increased bleeding risk.Genetics contributes significantly to the development of kidney diseases. In the case of glomerular diseases such as focal segmental glomerulosclerosis, over a dozen genes involved in maintaining and regulating the actin cytoskeleton of podocytes have been implicated. A new study adds the atypical myosin, MYO9A, to that list using a combination of human and mouse genetics, suggesting a link to enhanced RhoA activity. Unraveling the growing web of actin regulators remains a key challenge to understanding podocytopathies.Sodium-glucose cotransporter 2 inhibitors offer cardiovascular and renal benefits in patients with chronic kidney disease through not yet clearly defined mechanisms. Juni et al. showed that sodium-glucose cotransporter 2 inhibitor empagliflozin exposure in vitro can restore cardiomyocyte function by counteracting harmful effects of uremic serum on the endothelium-cardiomyocyte crosstalk between endothelial cells and cardiomyocytes. The author's findings improved our understanding of cardiovascular impairment in chronic kidney disease and provided new perspectives for the beneficial effects of sodium-glucose cotransporter 2 inhibitor therapy.Since the discovery of the genetic basis of Rett syndrome in 1999, our understanding has grown considerably both in the scientific and the clinical realms. In the last two decades, we have learned about the far-reaching effects of the aberrant MeCP2 protein, the growing list of involved genetic factors, and the genotype-phenotype clinical expression of common MECP2 mutations. This knowledge has led to several basic science research and clinical trials, focusing specifically on emerging treatments of Rett syndrome. As the pathophysiology behind the disease is better understood, treatments aimed at specific molecular targets will become available for clinicians to improve the life of individuals with Rett syndrome.Affecting approximately 1 per 6000-10,000 individuals, tuberous sclerosis complex (TSC) is a neurocutaneous disorder that is not only uncommon but at risk to go underrecognized. Similar to other phakomatoses, TSC is a disorder of cellular proliferation and migration producing hamartomas-benign tumors or malignant cancers affecting the skin and brain-and also involving the heart, kidneys, lungs and eyes in ways that can vary across the lifetime. It also occurs and varies across generations. Among medical subspecialists, the pediatric neurologist is often responsible for making the initial diagnosis when the affected individual presents with infantile spasms or another early-onset epilepsy syndrome. In recent decades, the identification of the responsible genes and gene products forming the mechanistic target of rapamycin complex, previously termed the mammalian target of rapamycin, not only has expanded our understanding of tuberous sclerosis pathophysiology, but has also inspired the search for targeted interventions.The mucopolysaccharidoses (MPS) are a genetically heterogenous group of enzyme deficiencies marked by accumulation of glycosaminoglycans in lysosomes leading to multisystem disease. AZD9291 ic50 Although significant therapeutic advances have been made for the MPS disorders, including recombinant enzyme replacement approaches, the neuronopathic features of MPS lack adequate treatment. Gene therapies, including adeno-associated virus vectors targeting the central nervous system, hold significant promise for this group of disorders. Optimal outcomes of all therapies will require early disease identification and treatment, ideally by newborn screening.Leukodystrophies and genetic leukoencephalopathies comprise a growing group of inherited white matter disorders. Diagnostic rates have improved with increased utilization of next generation sequencing. As treatment options continue to advance for leukodystrophies, so will candidacy for inclusion in the United States' newborn Recommended Universal Screening Panel as was achieved for X-linked adrenoleukodystrophy. Stem cell therapies have become standard of care for selected leukodystrophies. However, transplantation-related risks remain high and outcomes are not fully satisfactory. Transduction of autologous hematopoietic stem cells with lentiviral vectors, referred to as ex vivo gene therapy, circumvents some, but not all, of the risks of traditional transplantation and has recently been demonstrated to be safe and efficective in clinical studies of X-linked adrenoleukodystrophy and metachromatic leukodystrophy. Gene therapy, through direct infusion of adeno-associated virus vectors, has emerged as a safer alternative for many monogenetic pediatric neurological disorders.
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