Project description:Eight healthy human subjects were enrolled in a 6-day simulated shift work protocol. Blood samples were collected during the two 24-hour measurement periods. Blood samples were collected every 4 hours during both measurement periods. Subjects entered the lab on Day 1. At the start of Day 2, the first 24-hour measurement period was started. Subjects slept according to their habitual sleep/wake schedule, followed by a 16-hour constant posture procedure. On days 3-6, the sleep period was delayed by 10 hours. Following the third night on this schedule, subjects underwent another 24-hour measurement period. During both measurement periods, 7 blood samples were collected and PBMCs were isolated. mRNA was extracted, labelled, and hybridized to microarrays.
Project description:Blood plasma was collected from a total of 14 subjects participating in a between-groups, in-laboratory study. Healthy volunteers (ages 22-34, BMI average 25.7) were assigned to a 3 day simulated night-shift schedule (6 male, 1 female) or a simulated day-shift (i.e., control, 4 male, 3 female) schedule. For each group, this was followed by a 24-h constant routine protocol, during which blood was drawn at 3-h intervals to measure plasma lipid profiles using LC-MS/MS.