Neuropathological studies have identified a key role for the serotonin (5-hydroxytryptamine [5-HT]) pathways in sudden infant death syndrome (SIDS). Panigrahy et al1 reported a decrease in 5-HT receptor binding in the arcuate nucleus, raphé obscurus, and other medullary regions that contain 5-HT cell bodies in SIDS cases in the United States. Similarly, Ozawa and Okado2 reported a decrease in 5-HT receptor binding in the dorsal nucleus of the vagus, solitary nucleus, and ventrolateral medulla in SIDS cases in Japan. Subsequently, Kinney et al3 confirmed their prior observations of altered 5-HT receptor binding in medullary regions in Native American Indians, a group at high risk for SIDS.
Weese-Mayer DE. Sudden Infant Death SyndromeIs Serotonin the Key Factor?. JAMA. 2006;296(17):2143–2144. doi:10.1001/jama.296.17.2143
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