A novel compound, (5-(dimethylamino)-N-(4-ethynylphenyl)-1-naphthalenesulfonamide), was prepared and characterized; it shows dual functional roles as an effective antitumor and a two-photon induced bio-imaging agent.
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http://dx.doi.org/10.1039/b926908h | DOI Listing |
J Chem Phys
January 2025
Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, USA.
Electronic spectra for OThF have been recorded using fluorescence excitation and two-photon resonantly enhanced ionization techniques. Multiple vibronic bands were observed in the 340-460 nm range. Dispersed fluorescence spectra provided ground state vibrational constants and evidence of extensive vibronic state mixing at higher excitation energies.
View Article and Find Full Text PDFElife
January 2025
Werner Reichardt Centre for Integrative Neuroscience, University of Tübingen, Tübingen, Germany.
Neuromodulators have major influences on the regulation of neural circuit activity across the nervous system. Nitric oxide (NO) has been shown to be a prominent neuromodulator in many circuits and has been extensively studied in the retina. Here, it has been associated with the regulation of light adaptation, gain control, and gap junctional coupling, but its effect on the retinal output, specifically on the different types of retinal ganglion cells (RGCs), is still poorly understood.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
University of Kentucky College of Medicine, Sanders‐Brown Center on Aging, Lexington, KY, USA
Background: Astrocytes are a glial cell type responsible for many protective functions in the brain. While they are primarily recognized for regulating synaptic activity, they’re also essential for maintaining the neurovascular unit, and cerebral hyperperfusion during metabolic demand. Calcium signaling has been identified as a regulatory process for these functions.
View Article and Find Full Text PDFAlzheimers 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 PDFJ Neuroinflammation
January 2025
Department of Molecular Biology and Biochemistry, University of California Irvine, Irvine, 92697, USA.
Background: Immunothrombosis is the process by which the coagulation cascade interacts with the innate immune system to control infection. However, the formation of clots within the brain vasculature can be detrimental to the host. Recent work has demonstrated that Toxoplasma gondii infects and lyses central nervous system (CNS) endothelial cells that form the blood-brain barrier (BBB).
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