The serine racemase mRNA is predominantly expressed in rat brain neurons
| Autor: | Naoko Takayasu, Hideo Tsukamoto, Masanobu Yoshikawa, Setsuko Noda, Yuichi Sato, Atsushi Hashimoto, Raita Tamaki, Hiroyuki Kobayashi |
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| Rok vydání: | 2007 |
| Předmět: |
Male
Neurons Messenger RNA Histology Racemases and Epimerases Brain In situ hybridization Biology Neurotransmission Blotting Northern Molecular biology Rats medicine.anatomical_structure Cerebral cortex Serine racemase Glycine Forebrain medicine Animals RNA Messenger Rats Wistar Receptor In Situ Hybridization |
| Zdroj: | Archives of Histology and Cytology. 70:127-134 |
| ISSN: | 1349-1717 0914-9465 |
| Popis: | D-serine is an endogenous and obligatory coagonist for the glycine site of the N-methyl-D-aspartate receptor in the mammalian brain. D-serine is synthesized from L-serine by serine racemase; immunohistochemical studies have long been believed to indicate that serine racemase and D-serine occur predominantly in astrocytes. However, we have recently demonstrated in the primary cultures that both the mRNA and protein levels of serine racemase are higher in neurons than in astrocytes. Here we report the application of in situ hybridization based on tyramide signal amplification for the detection of serine racemase mRNA in sections of the adult rat brain. Serine racemase mRNA could be demonstrated in a large number of neurons throughout the brain, especially in the forebrain such as the cerebral cortex, striatum, and hippocampus. This is the first study to demonstrate the exact localization of serine racemase mRNA at the cellular or tissue level. These results suggest that neuron-derived D-serine could modulate neurotransmission via the glycine site of N-methyl-D-aspartate receptors. |
| Databáze: | OpenAIRE |
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