Synaptic dysfunction is a key pathophysiological hallmark in several neurodegenerative disorders. In this Review, Lu and colleagues consider a 'synaptic repair'-based therapy for neurodegenerative diseases that targets pathophysiology rather than pathogenesis and discuss BDNF as a potential synaptic repair molecule.

BDNF-based synaptic repair as a disease-modifying strategy for neurodegenerative diseases

Alzheimer’s dementia (AD) is increasingly being recognized as one of the most important medical and social problems in older people in industrialized and non-industrialized nations. To date, only symptomatic treatments exist for this disease, all trying to counterbalance the neurotransmitter disturbance. Three cholinesterase inhibitors (CIs) are currently available and have been approved for the treatment of mild to moderate AD. A further therapeutic option available for moderate to severe AD is memantine, an N-methyl-D-aspartate receptor noncompetitive antagonist. Treatments capable of stopping or at least effectively modifying the course of AD, referred to as ‘disease-modifying’ drugs, are still under extensive research. To block the progression of the disease they have to interfere with the pathogenic steps responsible for the clinical symptoms, including the deposition of extracellular amyloid β plaques and intracellular neurofibrillary tangle formation, inflammation, oxidative damage, iron deregulati...

/pdf/current-and-future-treatments-for-alzheimer-s-disease-3zaf3vw3ul.pdf

Current and future treatments for Alzheimer's disease.

Decoding Alzheimer's disease from perturbed cerebral glucose metabolism: Implications for diagnostic and therapeutic strategies

Metal dyshomeostasis and oxidative stress in Alzheimer's disease.

Treatment of Alzheimer's disease (AD) is significantly hampered by the lack of easily accessible biomarkers that can detect disease presence and predict disease risk reliably. Fluid biomarkers of AD currently provide indications of disease stage; however, they are not robust predictors of disease progression or treatment response, and most are measured in cerebrospinal fluid, which limits their applicability. With these aspects in mind, the aim of this article is to underscore the concerted efforts of the Blood-Based Biomarker Interest Group, an international working group of experts in the field. The points addressed include: (1) the major challenges in the development of blood-based biomarkers of AD, including patient heterogeneity, inclusion of the "right" control population, and the blood–brain barrier; (2) the need for a clear definition of the purpose of the individual markers (e.g., prognostic, diagnostic, or monitoring therapeutic efficacy); (3) a critical evaluation of the ongoing biomarker approaches; and (4) highlighting the need for standardization of preanalytical variables and analytical methodologies used by the field.

/pdf/the-future-of-blood-based-biomarkers-for-alzheimer-s-disease-1g76dv6687.pdf

The future of blood-based biomarkers for Alzheimer's disease

Alzheimer's disease (AD) is a progressive and ultimately fatal condition that causes debilitating memory loss and extensive deterioration of cognitive and functional abilities. Currently available treatments for AD (donepezil, rivastigmine, galantamine and memantine) are symptomatic and do not decelerate or prevent the progression of the disease. These therapies demonstrate modest, but particularly consistent, benefit for cognition, global status and functional ability. The search for disease-modifying interventions has focused largely on compounds targeting the amyloid-β pathway. To date, the treatments targeting this pathway, such as tramiprosate and semagacestat, have been unsuccessful in demonstrating efficacy in clinical stages of testing. At this point, it is likely that not only amyloid-β aggregation but other possible neuronal mechanisms - such as hyperphosphorylated tau, neuro-inflammation and other processes - play important roles in the pathophysiology of this multifactorial disorder. Development of better disease models and biomarkers is essential for the advancement of knowledge of the disease mechanisms. This systematic review critically examines the efficacy and safety data for currently approved drugs and emerging treatments in AD, as well as discussing the present and future directions of innovation in this field.

Current and emerging drug treatment options for Alzheimer's disease: a systematic review.

Dermal permeation data and models for the prioritization and screening-level exposure assessment of organic chemicals.

We undertook this retrospective study to describe decisions made following asparaginase activity monitoring implementation at our center. Clinically apparent reactions (CARs) and asparaginase activity monitoring costs were described. Patients with acute lymphoblastic leukemia, aged <18 years who received asparaginase between April 2016 and September 2017, were included. Decisions made following receipt of asparaginase activity results were categorized as continuation, modification, premedication, or discontinuation. We included 129 patients (median age: 5.33 years) receiving 565 asparaginase doses. CARs were observed following 25 asparaginase doses (19/361 [5.3%] pegaspargase). A total of 224 asparaginase activity levels were ordered in 88 patients. Following receipt of 190 asparaginase activity results, asparaginase therapy was continued, modified, or premedicated in 188 (98.9%), 1 (0.005%), and 1 (0.005%) cases, respectively. Inadequate asparaginase activity was observed in three patients receiving Erwinia asparaginase. Asparaginase activity monitoring allowed patients with pegaspargase-associated CAR and adequate activity to continue therapy unchanged and was cost neutral.

Clinical decisions following implementation of asparaginase activity monitoring in pediatric patients with acute lymphoblastic leukemia: Experience from a single-center study.

The Current Status of Alzheimer's Disease Treatment

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Current and emerging drug treatment options for Alzheimer's disease: a systematic review.

Dermal permeation data and models for the prioritization and screening-level exposure assessment of organic chemicals.

Clinical decisions following implementation of asparaginase activity monitoring in pediatric patients with acute lymphoblastic leukemia: Experience from a single-center study.

The Current Status of Alzheimer's Disease Treatment