Neurotrophic factor expression in three infants with Ondine's curse

Area of Science:

• Neuroscience
• Pediatrics
• Respiratory Medicine

Background:

• Idiopathic congenital central hypoventilation syndrome (ICHS), also known as Ondine's curse, is a rare disorder affecting autonomic control of breathing.
• Neurotrophic factors, such as brain-derived neurotrophic factor (BDNF), play a vital role in the development and survival of neurons, including those controlling respiration.

Purpose of the Study:

• To investigate the expression levels of key neurotrophic factors in the cerebrospinal fluid (CSF) of infants with ICHS.
• To determine the correlation between these neurotrophic factors and the pathophysiology of ICHS.

Main Methods:

• CSF samples were collected from three infants diagnosed with ICHS and 15 control infants with obstructive hydrocephalus.
• Expression levels of brain-derived neurotrophic factor (BDNF), glial-derived neurotrophic factor (GDNF), and nerve growth factor (NGF) were quantified using an immunoenzymatic assay.

Main Results:

• A non-statistically significant reduction in BDNF levels was observed in the CSF of infants with ICHS compared to controls.
• No significant variations in NGF and GDNF levels were found between the ICHS group and the control group.
• The mean BDNF level in the ICHS group was 1509 pg/mL, compared to 1954 pg/mL in the control group.

Conclusions:

• The observed trend of reduced BDNF expression in ICHS infants suggests a potential dysregulation in BDNF synthesis.
• This dysregulation may contribute to the respiratory control deficits characteristic of ICHS.
• Further research is warranted to confirm these findings and elucidate the precise role of BDNF in ICHS.