Abstract:
BACKGROUND:Tyrosine hydroxylase (TH) is a specific marker for catecholaminergic neurones. Some reports have demonstrated a decrease of TH in the Sudden Infant Death Syndrome (SIDS) compared with controls. To further investigate this, the correlation between TH and sleep apnea was investigated here. MATERIALS AND METHODS:Among 27,000 infants studied prospectively to characterize their sleep-wake behavior, 38 infants died under 6 months of age. They included 26 cases of SIDS. All the infants had been recorded during one night in a pediatric sleep laboratory some 3 to 12 weeks before death. The frequency and the duration of sleep apnea were analyzed. The brain stem material was collected and subjected to immunohistochemical studies for TH. The density of TH-immunoreactive neurons was measured in the nucleus hypoglossus, nervus vagus dorsalis, solitary and ambiguous and the ventrolateral medulla (VLM) in the medulla oblongata. Correlation analyses were carried out between the density of TH-immunoreactive neurons and the data from the sleep apnea studies. RESULTS:There was no SIDS specific correlation between TH-immunoreactive neurons in the nucleus hypoglossus, nervus vagus dorsalis, solitary and ambiguous and the ventrolateral medulla (VLM) in the medulla oblongata and the frequency and duration of sleep apnea. CONCLUSIONS:No significant association between the pathological data and the physiological data refers to TH positive neurons in the medulla oblongata in SIDS victims.
journal_name
Early Hum Devjournal_title
Early human developmentauthors
Sawaguchi T,Ozawa Y,Patricia F,Kadhim H,Groswasser J,Sottiaux M,Takashima S,Nishida H,Kahn Adoi
10.1016/j.earlhumdev.2003.08.007keywords:
subject
Has Abstractpub_date
2003-12-01 00:00:00pages
S41-50eissn
0378-3782issn
1872-6232pii
S0378378203001154journal_volume
75 Supplpub_type
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