title: Short sleeping time and psychobiological responses to acute stress.
abstract: The aim of this study was to examine the association between self-reported sleeping time and psychobiological stress responses [3-Methoxy-4-hydroxyphenylglycol (MHPG) and Secretory immunoglobulin A (IgA), perceived stress responses]. Thirty seven healthy men and women were recruited, and participants were divided according to the habitual number of hours of sleep as follows: adequate sleepers (AS) (6-8h sleep per night regularly) (N=22) and short sleepers (SS) (less than 5h sleep per night regularly) (N=15). Salivary MHPG, s-IgA and perceived stress were measured at baseline, immediately after task and recovery period. An increase in free-MHPG during the task period was observed in AS although free-MHPG increased only after the task period in SS. The level of s-IgA in both groups significantly increased during the task period, and quickly returned to a basal level during the recovery period. The results show that less than 5h of sleep was associated with different responsiveness to the Stroop color word conflict task compared to sufficient sleep, especially in the NA system.
authors.affiliation: Cognitive and Molecular Institute of Brain Diseases, Kurume University, Kurume, Fukuoka, Japan. okamura_hisayoshi@med.kurume-u.ac.jp
authors.forename: Hisayoshi
authors.initials: H
authors.lastname: Okamura
authors.forename: Akira
authors.initials: A
authors.lastname: Tsuda
authors.forename: Jumpei
authors.initials: J
authors.lastname: Yajima
authors.forename: Hamer
authors.initials: H
authors.lastname: Mark
authors.forename: Satoshi
authors.initials: S
authors.lastname: Horiuchi
authors.forename: Natsuki
authors.initials: N
authors.lastname: Toyoshima
authors.forename: Toyojirou
authors.initials: T
authors.lastname: Matsuishi
mesh_terms: D000223:Adaptation, Psychological; D000293:Adolescent; D052636:Allostasis / Q000502:physiology*; D005260:Female; D006801:Humans; D007071:Immunoglobulin A, Secretory / Q000378:metabolism; D008297:Male; D008734:Methoxyhydroxyphenylglycol / Q000378:metabolism; D012016:Reference Values; D055500:Resilience, Psychological; D012463:Saliva / Q000378:metabolism; D012890:Sleep / Q000502:physiology*; D013315:Stress, Psychological / Q000378:metabolism*; D057190:Stroop Test; D013997:Time Factors; D055815:Young Adult
chemical_list: D007071:Immunoglobulin A, Secretory; D008734:Methoxyhydroxyphenylglycol