PMID- 15749363 OWN - NLM STAT- MEDLINE DCOM- 20050526 LR - 20061115 IS - 0379-0738 (Print) IS - 0379-0738 (Linking) VI - 149 IP - 2-3 DP - 2005 May 10 TI - Apnea, glial apoptosis and neuronal plasticity in the arousal pathway of victims of SIDS. PG - 205-17 AB - Of 27,000 infants whose sleep-wake characteristics were studied under the age of 6 months, 38 died unexpectedly 2-12 weeks after the sleep recording in a pediatric sleep laboratory. Of these infants, 26 died of sudden infant death syndrome (SIDS), and 12 of definitely identified causes. The frequency and duration of sleep apneas were analysed. Sleep recordings and brainstem histopathology were studied to elucidate the possible relationship between sleep apnea and neuropathological changes within the arousal system. Immunohistochemical analyses were conducted using tryptophan hydroxylase (TrypH), a serotonin synthesizing enzyme, and growth-associated phosphoprotein 43 (GAP43), a marker of synaptic plasticity. The terminal-deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) method was used for apoptosis. The pathological and physiological data were correlated for each infant. In the SIDS victims, statistically significant positive correlations were seen between the number of TrypH-positive neurons in the dorsal raphe nucleus of the midbrain and the duration of central apneas (p = 0.03), between the number of TUNEL-positive glial cells in the pedunculopontine tegmental nucleus (PPTN) and the average number of spines in GAP43-positive neurons in the PPTN (p = 0.04). These findings in the dorsal raphe nucleus of the midbrain and PPTN, that play important roles in the arousal pathway suggest a possible link between changes in arousal and SIDS. FAU - Sawaguchi, T AU - Sawaguchi T AD - Department of Legal Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku, 162-8666 Tokyo, Japan. tsawagu@research.ywmu.ac.jp FAU - Kato, I AU - Kato I FAU - Franco, P AU - Franco P FAU - Sottiaux, M AU - Sottiaux M FAU - Kadhim, H AU - Kadhim H FAU - Shimizu, S AU - Shimizu S FAU - Groswasser, J AU - Groswasser J FAU - Togari, H AU - Togari H FAU - Kobayashi, M AU - Kobayashi M FAU - Nishida, H AU - Nishida H FAU - Sawaguchi, A AU - Sawaguchi A FAU - Kahn, A AU - Kahn A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Ireland TA - Forensic Sci Int JT - Forensic science international JID - 7902034 RN - 0 (GAP-43 Protein) RN - EC 1.14.16.4 (Tryptophan Hydroxylase) SB - IM MH - *Apoptosis MH - Case-Control Studies MH - Female MH - Forensic Medicine MH - GAP-43 Protein/metabolism MH - Humans MH - Immunohistochemistry MH - In Situ Nick-End Labeling MH - Infant MH - Infant, Newborn MH - Male MH - Neuroglia/*metabolism MH - Neurons/metabolism MH - Pedunculopontine Tegmental Nucleus/metabolism MH - Polysomnography MH - Raphe Nuclei/metabolism MH - Sleep Apnea, Central/*metabolism MH - Sudden Infant Death/*pathology MH - Tryptophan Hydroxylase/metabolism EDAT- 2005/03/08 09:00 MHDA- 2005/05/27 09:00 CRDT- 2005/03/08 09:00 PHST- 2005/03/08 09:00 [pubmed] PHST- 2005/05/27 09:00 [medline] PHST- 2005/03/08 09:00 [entrez] AID - S0379-0738(04)00687-5 [pii] AID - 10.1016/j.forsciint.2004.10.015 [doi] PST - ppublish SO - Forensic Sci Int. 2005 May 10;149(2-3):205-17. doi: 10.1016/j.forsciint.2004.10.015.