Cerebrospinal fluid neuropeptide Y in combat veterans with and without posttraumatic stress disorder

Psychoneuroendocrinology
Renu SahThomas D Geracioti

Abstract

Accruing evidence indicates that neuropeptide Y (NPY), a peptide neurotransmitter, is a resilience-to-stress factor in humans. We previously reported reduced cerebrospinal fluid (CSF) NPY concentrations in combat-related posttraumatic stress disorder (PTSD) subjects as compared with healthy, non-combat-exposed volunteers. Here we report CSF NPY in combat-exposed veterans with and without PTSD. We quantified NPY concentrations in morning CSF from 11 male subjects with PTSD from combat in Iraq and/or Afghanistan and from 14 combat-exposed subjects without PTSD. NPY-like immunoreactivity (NPY-LI) was measured by EIA. The relationship between CSF NPY and clinical symptoms, as measured by the Clinician-Administered PTSD Scale (CAPS) and Beck Depression Inventory (BDI), was assessed, as was the relationship between combat exposure scale (CES) scores and CSF NPY. As compared with the combat-exposed comparison subjects without PTSD, individuals with PTSD had significantly lower concentrations of CSF NPY [mean CSF NPY was 258. 6 ± 21.64 pg/mL in the combat trauma-no PTSD group but only 180.5 ± 12.62 pg/mL in PTSD patients (p=0.008)]. After adjusting for CES and BDI scores the two groups were still significantly different with respect to...Continue Reading

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Related Concepts

Immunoreactivity
Spinal Puncture
Psychosexual Disorders
Post-Traumatic Stress Disorder
Afghan Campaign 2001-
Combat Disorders
Malignant Neoplasm of Brain Stem
Entire Central Nervous System
Cerebrospinal Fluid
Adrenal Cortex Hormones

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