[reaction: see text] A highly stereoselective synthesis of (-)-kainic acid has been achieved in 14 steps and >7% overall yield starting from inexpensive trans-4-hydroxy-L-proline. The key steps are diastereoselective enolate alkylation and cuprate substitution reactions.
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http://dx.doi.org/10.1021/jo051508t | DOI Listing |
F1000Res
January 2025
Faculty of Teaching and Education Sciences, Islamic University of Malang, Malang, East Java, Indonesia.
Background: Neurodegeneration due to neurotoxicity is one of the phenomena in temporal lobe epilepsy. Experimentally, hippocampal excitotoxicity process can occur due to kainic acid exposure, especially in the CA3 area. Neuronal death, astrocyte reactivity and increased calcium also occur in hippocampal excitotoxicity, but few studies have investigated immediate effect after kainic acid exposure.
View Article and Find Full Text PDFNeurochem Res
January 2025
Huazhong University of Science and Technology, Tongji Medical College, Wuhan, Hubei, 430000, China.
Epilepsy (EP) is a neurological disorder characterized by abnormal, sudden neuronal discharges. Seizures increase extracellular glutamate levels, causing excitotoxic damage. Glutamate transporter type 1 (GLT-1) and its human homologue excitatory amino acid transporter-2 (EAAT2) clear 95% of extracellular glutamate.
View Article and Find Full Text PDFeNeuro
January 2025
Department of Neuroscience, Tufts University School of Medicine, Boston, Massachusetts 02111
Psychiatric disorders, including anxiety and depression, are highly comorbid in people with epilepsy. However, the mechanisms mediating the shared pathophysiology are currently unknown. There is considerable evidence implicating the basolateral amygdala (BLA) in the network communication of anxiety and fear, a process demonstrated to involve parvalbumin-positive (PV) interneurons.
View Article and Find Full Text PDFSci Transl Med
December 2024
Department of Dermatology, University of Pittsburgh, Pittsburgh, PA 15261, USA.
Activation of dermal mast cells through the Mas-related G protein-coupled receptor B2 receptor (MrgprB2 in mice and MrgprX2 in humans) is a key component of numerous inflammatory skin diseases, including dermatitis and rosacea. Sensory neurons actively suppress mast cell activation through the regulated release of glutamate, resulting in reduced expression of as well as genes associated with proteins found in mast cell granules. To determine whether exogenous glutamate receptor agonism could suppress mast cell function, we determined that mast cells have relatively selective expression of the glutamate receptor ionotropic, kainate 2 (GluK2).
View Article and Find Full Text PDFHarmful Algae
January 2025
Bachok Marine Research Station, Institute of Ocean and Earth Sciences, University of Malaya 16310 Bachok, Kelantan, Malaysia. Electronic address:
The benthic pennate diatom Nitzschia navis-varingica, known for producing domoic acid (DA) and its isomers, is widely distributed in the Western Pacific (WP) region. To investigate the genetic differentiation and gene flow patterns among the populations in the WP, the genetic diversity of 354 strains of N. navis-varingica was analysed using two nuclear-encoded rDNA loci: the large subunit rDNA (LSU rDNA) and the internal transcribed spacer 2 (ITS2).
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