Document Detail

Salivary free radical-scavenging activity is affected by physical and mental activities.
MedLine Citation:
PMID:  18826379     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE AND DESIGN: Free radicals/reactive oxygen species (ROS) are related to inflammation, aging, and cancer. However, living systems have essential antioxidant mechanisms by which these harmful radicals can be scavenged, i.e., free radical-scavenging activity (FRSA). We measured the circadian rhythm of such activities by detecting salivary FRSA in healthy adults, and also examined how salivary FRSA is affected by physical and mental activities, which included (1) ingestion of beverage, (2) exercise, (3) comfortable/uncomfortable stimulation, and (4) smoking. METHODS: FRSA was determined by using the DPPH (1,1'-diphenyl-2-picrylhydrazyl) method. Statistical analysis for experimentally obtained median values was carried out using the Wilcoxon signed rank test. RESULTS: In circadian rhythm, FRSA was increased by food ingestion and relaxation. As to the individual activities, green tea and coffee ingestion increased FRSA, whereas swimming (P < 0.05) and dance lessons (P < 0.01) decreased it. Watching an amusing video program (P < 0.001) or stimulation by a pleasant aroma (P < 0.01) increased FRSA. In contrast, an unpleasant odor had no effect on FRSA. FRSA decreased immediately after smoking (P < 0.05), but increased thereafter (P < 0.01). CONCLUSION: Salivary FRSA was affected not only by physical activities, but also by mental activities. It may be a parameter for reflecting the health status of individuals.
T Atsumi; K Tonosaki; S Fujisawa
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Oral diseases     Volume:  14     ISSN:  1601-0825     ISO Abbreviation:  Oral Dis     Publication Date:  2008 Sep 
Date Detail:
Created Date:  2008-10-01     Completed Date:  2009-01-26     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  9508565     Medline TA:  Oral Dis     Country:  Denmark    
Other Details:
Languages:  eng     Pagination:  490-6     Citation Subset:  D    
Department of Human Development & Fostering, Meikai University School of Dentistry, Saitama, Japan.
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MeSH Terms
Activities of Daily Living*
Antioxidants / physiology*
Biphenyl Compounds / diagnostic use
Child, Preschool
Circadian Rhythm / physiology
Dancing / physiology
Drinking / physiology
Eating / physiology
Exercise / physiology
Free Radical Scavengers / pharmacology*
Hydrazines / diagnostic use
Laughter / physiology
Mental Processes*
Middle Aged
Oils, Volatile
Pentanoic Acids
Plant Oils
Relaxation / physiology
Saliva / physiology*
Smell / physiology
Smoking / physiopathology
Swimming / physiology
Young Adult
Reg. No./Substance:
0/Antioxidants; 0/Biphenyl Compounds; 0/Coffee; 0/Free Radical Scavengers; 0/Hydrazines; 0/Oils, Volatile; 0/Pentanoic Acids; 0/Picrates; 0/Plant Oils; 0/Tea; 1898-66-4/2,2-diphenyl-1-picrylhydrazyl; 503-74-2/isovaleric acid; 8000-28-0/lavender oil

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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