Abnormal plasma neuroactive progestagen derivatives in ill, neonatal foals presented to the neonatal intensive care unit.

Summary

# Editorial Summary Neonatal maladjustment syndrome (NMS) in foals—characterised by depression, altered consciousness and behavioural abnormalities—may have a biochemical basis in abnormal steroid metabolism, prompting investigation into whether neuroactive progestagen derivatives could explain these clinical signs. Researchers measured plasma concentrations of pregnanes (neuroactive steroid metabolites) in neonatal foals admitted to intensive care, comparing affected animals with healthy controls to establish whether elevated levels correlated with clinical presentation. Affected foals demonstrated significantly increased plasma pregnane concentrations, suggesting impaired clearance or excessive production of these compounds, which are small enough to cross the blood-brain barrier and exert depressant effects on the central nervous system. These findings provide a plausible biochemical mechanism for NMS symptomatology and suggest that therapeutic interventions targeting steroid metabolism—such as supporting hepatic function or modulating pregnane production—warrant investigation as potential treatments. For practitioners managing neonatal foals presenting with depression and altered mentation, recognition of this endocrine component may expand diagnostic and therapeutic strategies beyond conventional supportive care alone.

Read the full abstract on PubMed

Key Findings

• •Ill neonatal foals presented to intensive care show abnormal plasma levels of neuroactive progestagen derivatives (pregnanes)
• •Elevated pregnanes may cross the blood-brain barrier and exert depressive effects on the central nervous system
• •Increased pregnane levels are associated with behavioural abnormalities and altered consciousness states in affected foals

Conditions Studied

Tags