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Insights for the Next Generation of Ketamine for the Treatment of Depressive Disorder.
J Med Chem
January 2025
Department of Pharmaceutical Sciences, College of Health and Human Sciences, North Dakota State University, Fargo, North Dakota 58105, United States.
Treatment-resistant depression responds quickly to ketamine. As an -methyl-d-aspartate receptor (NMDAR) antagonist, ketamine may affect prefrontal cortex (PFC) neurons. Recent investigations reveal that the ()-enantiomer is the most effective and least abuseable antidepressant.
View Article and Find Full Text PDFCardiac Presynaptic Sympathetic Nervous Function Evaluated by Cardiac PET in Patients with Chronotropic Incompetence Without Heart Failure.
J Nucl Med
January 2025
Department of Cardiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
Chronotropic incompetence (CTI), the inability of the heart to increase its rate with increased activity, leads to exercise intolerance and predicts overall mortality. We previously reported that cardiac β-adrenergic receptor downregulation occurs in patients with CTI without heart failure (HF), indicating postsynaptic sympathetic nervous dysfunction. However, cardiac presynaptic sympathetic nervous system function in CTI is not fully understood.
View Article and Find Full Text PDFAIM2 promotes excitatory glutamate receptor expression by inhibiting STING and contributes to bone cancer pain in male mice.
Sci Rep
December 2024
Institute of Anesthesiology & Pain (IAP), Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, China.
Bone cancer pain (BCP) is a common clinical problem in cancer patients. The plasticity of excitatory neurons within the spinal dorsal horn plays a significant role in the development of BCP. This study explored the roles of absent in melanoma 2 (AIM2) and stimulator of interferon gene (STING) in BCP using male C57BL/6J mice.
View Article and Find Full Text PDFSelective Colocalization of GHSR and GLP-1R in a Subset of Hypothalamic Neurons and Their Functional Interaction.
Endocrinology
November 2024
Laboratory of Neurophysiology, Multidisciplinary Institute of Cell Biology [IMBICE; Argentine Research Council (CONICET); Scientific Research Commission, Province of Buenos Aires (CIC-PBA); National University of La Plata], B1906APO La Plata, Buenos Aires, Argentina.
The GH secretagogue receptor (GHSR) and the glucagon-like peptide-1 receptor (GLP-1R) are G protein-coupled receptors with critical, yet opposite, roles in regulating energy balance. Interestingly, these receptors are expressed in overlapping brain regions. However, the extent to which they target the same neurons and engage in molecular crosstalk remains unclear.
View Article and Find Full Text PDFArmodafinil as Monotherapy in Treating Narcolepsy with Cataplexy.
Cureus
December 2024
Internal Medicine, Guthrie Lourdes Hospital, Binghamton, USA.
In narcolepsy with cataplexy, sodium oxybate and the recently FDA-approved drug pitolisant are preferred medications. Armodafinil, a longer-acting, non-amphetamine stimulant, is often used in patients who have narcolepsy without cataplexy. It enhances alertness by increasing presynaptic dopamine transmission presynaptically, amplifying serotonin in the cerebral cortex, activating glutamatergic circuits, which may contribute to its vigilance-enhancing properties, and stimulating orexin activity.
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