Effects of indoor air quality on human autonomic nervous system in relation with the ultrafine particles emitted from business machines

• Project/Area Number: 22659125
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Single-year Grants
• Research Field: Hygiene
• Research Institution: Showa University
• Principal Investigator: NAKADATE Toshio 昭和大学, 医学部, 教授 (60155760)
• Project Period (FY): 2010 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥2,700,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥300,000); Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2010: ¥1,400,000 (Direct Cost: ¥1,400,000)
• Keywords: 超微小粒子 / シックビル症候群 / 心拍変動性 / 事務機器 / 疫学研究

Research Abstract

It is well recognized that photocopiers or laser printers emit ultra-fine particles in less than one micrometer diameter when they are operated. We evaluated the effect of inhaled emission of a photocopier machine under conventional operation condition on the autonomic nervous system in eight healthy volunteers. There was no significant difference either in heart rate variability or in chromogranin-A amount in saliva between before and after the emission of ultra-fine particles from the photocopier was started.