An Open-label Study to Evaluate the Pharmacokinetics of YM178 After Single Oral Administration of 14C-labeled YM178 in Healthy Male Volunteers
An Open-label Study to Evaluate the Pharmacokinetics of YM178 After Single Oral Administration of 14C-labeled YM178 in Healthy Male Volunteers
The study aims to assess the routes and the extent of metabolism and excretion of YM178 after a single dose of 14C-radiolabeled YM178 administered as a drinking solution in healthy male volunteers.
Four subjects are studied in one group. Each subject stays in the clinic for 6 days, and receives a single oral dose of 14C-labeled YM178. Blood, plasma, urine, feces and expired air are collected for 96h after dosing.
If 14C-radioactivity quick counts show that radioactivity in urine or feces is above acceptable limits (ie. > 50 dpm/ml in urine; >75 dpm in 400 mg feces) on day 5, subjects are requested to stay in the clinic until the levels decrease. If, after 3 days, radioactivity is still > 50 dpm/ml in urine and/or >75 dpm in 400 mg feces, urine and/or feces is collected at home, until the amount of radioactivity decreases.
Inclusion Criteria:
Exclusion Criteria:
Known or suspected hypersensitivity to β-adrenergic receptor agonists or constituents of the formulations used
Any clinically significant history of asthma, eczema, any other allergic condition or previous severe hypersensitivity to any drug
Any clinically significant history of upper gastrointestinal symptoms (such as nausea, vomiting, abdominal discomfort or upset, or heartburn) in the 4 weeks prior to admission to the Research Unit
Any clinically significant history of any other disease or disorder - gastrointestinal, cardiovascular, respiratory, renal, hepatic, neurological, dermatological, psychiatric or metabolic
Abnormal pulse rate measurement (<40 or >90 bpm) taken by manual counting at the pre-study visit after subject has been resting in supine position for 5 min
Abnormal blood pressure measurements taken at the pre-study visit after subject has been resting in supine position for 5 min as follows:
Positive orthostatic test at screening i.e. any symptoms of dizziness, light-headedness etc. and/or a fall of ≥ 20 mmHg in systolic blood pressure after 2 min standing (preceded by 5 min. supine rest) and/or an increase in pulse rate of ≥ 20 bpm
Regular use of any prescribed or OTC (over the counter) drugs except paracetamol up to 3 g/day, in the 4 weeks prior to admission to the Research Unit OR any use of such drugs in the 2 weeks prior to admission to the Research Unit
History of drug abuse at any time, OR any use of drugs of abuse within 3 months prior to admission to the Research Unit
History of smoking more than 10 cigarettes (or equivalent amount of tobacco) per day within 3 months prior to admission to the Research Unit
History of drinking more than 21 units of alcohol per week (1 unit = 270 cc of beer or 40 cc of spirits or 1 glass of wine) within 3 months prior to admission to the Research Unit
Donation of blood or blood products within 3 months prior to admission to the Research Unit
Positive serology test for HBsAg, HAV IgM, anti-HCV or anti-HIV 1+2.
Participation in any clinical study within 3 months, or participation in more than 3 clinical studies within 12 months, prior to the expected date of enrolment into the study
Subjects having received YM178 previously
Exposure to radiation for diagnostic reasons (except dental X-rays and plain X-rays of thorax and bony skeleton (excluding spinal column)), during work or during participation in a clinical trial in the previous year