Objective: To establish a method of acutely isolating dorsal root ganglion (DRG) neurons for patch clamp study of single-channel.
Methods: DRG neurons of rats were acutely isolated by enzymatic digestion and mechanical blowing.
Results: The acutely isolated DRG cells were easy to form the higher sealing resistance (> 5G Omega), which lowered noise level, so that pA-level single channel currents could be recorded.
Conclusion: The acutely isolated DRG neurons in this study are an ideal for patch-clamp study of single-channel.
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Bioorg Chem
December 2024
Department of Pharmacy, General Hospital of Northern Theater Command, Shenyang 110840, People's Republic of China. Electronic address:
Transient Receptor Potential Ankyrin 1 (TRPA1) is a non-selective cation channel involved in detecting harmful stimuli and endogenous ligands, primarily expressed in sensory neurons. Due to its role in pain and itch, TRPA1 is a potential drug target. We identified an oxindole core structure via high-throughput screening, modified it, and tested the modified compounds in vitro and in vivo.
View Article and Find Full Text PDFPLoS Genet
December 2024
Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel.
Background: The development and diversification of sensory proprioceptive neurons, which reside in the dorsal root ganglia (DRG) and express the tropomyosin receptor kinase C (TrkC), depend on the transcription factor (TF) Runx3. Runx3-deficient mice develop severe limb ataxia due to TrkC neuron cell death. Two additional TFs Pou4f1 (also called Brn3a) and Isl1 also play an important role in sensory neuron development.
View Article and Find Full Text PDFMol Neurobiol
December 2024
Department of Physical Therapy, School of Health and Social Services, Saitama Prefectural University, 820 San-Nomiya, Koshigaya-Shi, Saitama, 343-8540, Japan.
Accumulation of senescent neurons in the dorsal root ganglion (DRG) is an important tissue phenotype that causes age-related degeneration of peripheral sensory nerves. Senescent neurons are neurons with arrested cell cycle that have undergone cellular senescence but remain in the tissue and play various biological roles. To understand the accumulation of senescent neurons in the DRG during aging, we aimed to elucidate the mechanism that induces cellular senescence in DRG neurons and the role of senescent DRG neurons.
View Article and Find Full Text PDFLife Sci
December 2024
Department of Medical Research and Development, Research Division, Chang Gung Memorial Hospital at Linkou, Taoyuan 33305, Taiwan.
Aims: Chronic pain is a critical public health issue that severely impacts quality of life and poses significant treatment challenges, particularly due to the risk of adverse effects associated with pharmacological therapies. The search for effective non-invasive treatment alternatives has become increasingly relevant. Low-intensity focused ultrasound (LIFU) has been identified as an effective non-invasive strategy for pain management, although the underlying mechanism remains unclear.
View Article and Find Full Text PDFACS Biomater Sci Eng
December 2024
Department of Mechano-Informatics, Graduate School of Information Science and Technology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
Engineered skin models with sensory innervation are a growing and challenging field of research aimed at applications in regenerative medicine, biosensing, and drug screening. Researchers are attempting to fabricate innervated skin tissues using collagen sponges, cell culture inserts, and microfluidic devices to partially mimic the layered structure of the skin. However, innervation of the full-thickness skin model has not yet been achieved.
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