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Biomarkers.
Alzheimers Dement
December 2024
Nathan Kline Institute for Psychiatric Research, Orangeburg, NY, USA; NYU Langone Health, New York, NY, USA.
Background: Clinical and preclinical evidence suggest that abnormal electrical activity strongly impacts outcomes in Alzheimer's disease (AD). Indeed, AD patients with interictal spikes (IIS) show faster cognitive decline than those without IIS. Furthermore, seizures in patients with AD have been suggested to accelerate disease progression.
View Article and Find Full Text PDFDeveloping Topics.
Alzheimers Dement
December 2024
Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Background: Deficits in interneuron and cholinergic circuits are noted in AD pathology, yet the precise mechanisms of their contribution to cognitive decline in the disease remain elusive. Neuronal Pentraxin 2 (NPTX2), a sensitive marker for synaptic activity and AD progression, is an immediate early gene expressed by pyramidal neurons that functions at excitatory synapses on Parvalbumin interneurons (PV-IN) to cluster AMPA receptors and strengthen circuit inhibition. NPTX2 is later shed from some synapses into the cerebrospinal fluid (CSF), where reduced NPTX2 levels inversely correlate with hippocampal volume and cognitive performance in individuals with AD/MCI.
View Article and Find Full Text PDFBackground: SUVN-I7016031 is a novel and selective positive allosteric modulator (PAM) of the M1 subtype of the muscarinic acetylcholine receptors (mAChRs). The proposed primary indication for SUVN-I7016031 is in the treatment of dementia such as Alzheimer's disease dementia (ADD) and Parkinson's disease dementia (PDD). In the current research, the pharmacological properties of SUVN-I7016031 in various types of dementia were investigated.
View Article and Find Full Text PDFHippocampal neuronal activity is aligned with action plans.
Nature
January 2025
Neuroscience Institute, New York University Grossman School of Medicine, New York, NY, USA.
Neurons in the hippocampus are correlated with different variables, including space, time, sensory cues, rewards and actions, in which the extent of tuning depends on ongoing task demands. However, it remains uncertain whether such diverse tuning corresponds to distinct functions within the hippocampal network or whether a more generic computation can account for these observations. Here, to disentangle the contribution of externally driven cues versus internal computation, we developed a task in mice in which space, auditory tones, rewards and context were juxtaposed with changing relevance.
View Article and Find Full Text PDFFear of Fragility: A Case of Osteoporosis-Triggered Takotsubo Cardiomyopathy.
Cureus
December 2024
Cardiology, St. Luke's Hospital, Chesterfield, USA.
We present a case of a 73-year-old woman with a medical history significant for hyperlipidemia, on pravastatin, who developed Takotsubo cardiomyopathy following a diagnosis of osteoporosis. She presented to the Emergency Department with acute transient left arm pain that resolved spontaneously. Investigations revealed elevated troponin levels, non-specific electrocardiographic changes, no significant coronary artery disease on angiography, and left ventricular systolic dysfunction, findings consistent with Takotsubo cardiomyopathy.
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