A Study to Assess the Effects of Canagliflozin (JNJ-28431754) on the Pharmacokinetics, Pharmacodynamics, and Safety of Glyburide in Healthy Volunteers

• Plasma concentrations of glyburide [ Time Frame: Up to Day 12 ] [ Designated as safety issue: No ]
  Comparison of plasma concentrations of glyburide following administration of a single dose of glyburide alone or in combination with multiple doses of canagliflozin (JNJ-28431754). This will be used to determine whether there is a pharmacokinetic interaction between glyburide and canagliflozin.
  
  
• Plasma concentrations of glyburide metabolites [ Time Frame: Up to Day 12 ] [ Designated as safety issue: No ]
  Comparison of plasma concentrations of glyburide metabolites following administration of a single dose of glyburide alone or in combination with multiple doses of canagliflozin (JNJ-28431754). This will be used to determine whether there is a pharmacokinetic interaction between glyburide and canagliflozin.
  
  

• Change from baseline in plasma glucose concentrations [ Time Frame: Day -1 (Baseline) up to Day 9 ] [ Designated as safety issue: No ]
  Plasma glucose concentrations following the administration of a single dose of glyburide after the administration of multiple doses of canagliflozin (JNJ-28431754) will be used to determine whether there is a pharmacodynamic interaction (changes in plasma glucose) between glyburide and canagliflozin. The area under the plasma glucose concentration-time curve (AUC) will be used as the key pharmacodynamic parameter.
  
  
• Change from baseline in plasma insulin concentrations [ Time Frame: Day -1 (Baseline) up to Day 9 ] [ Designated as safety issue: No ]
  Plasma insulin concentrations following the administration of a single dose of glyburide after the administration of multiple doses of canagliflozin (JNJ-28431754) will be used to determine whether there is a pharmacodynamic interaction (changes to plasma insulin) between glyburide and canagliflozin. The area under the plasma insulin concentration-time curve (AUC) will be used as the key pharmacodynamic parameter.
  
  
• Change from baseline in plasma C-peptide concentrations [ Time Frame: Day -1 (Baseline) up to Day 9 ] [ Designated as safety issue: No ]
  Plasma C-peptide is formed during the body's production of insulin. Plasma C-peptide concentrations following the administration of a single dose of glyburide after the administration of multiple doses of canagliflozin (JNJ-28431754) will be used to determine whether there is a pharmacodynamic interaction (changes to plasma C-peptide) between glyburide and canaglifloxin. The area under the plasma C-peptide concentration-time curve (AUC) will be used as the key pharmacodynamic parameter.
  
  

This study will be an open-label (all volunteers and study staff know the identity of the assigned treatment), single-center, fixed-sequence study (all volunteers receive the same medication on the same days) to determine how canagliflozin (a drug currently being investigated for the treatment of type 2 diabetes mellitus) affects the pharmacokinetics and pharmacodynamics of glyburide (a blood glucose-lowering agent used to treat patients with diabetes). The study will consist of 3 phases; a screening phase, an open-label treatment phase, and an end-of-study (or follow-up) phase. During the open-label treatment phase, each volunteer will receive a single 1.25 mg dose of glyburide on Day 1, followed by 200 mg canagliflozin once daily on Days 4 through 8. On Day 9 volunteers will receive both glyburide 1.25 mg and canagliflozin 200 mg. Each volunteer will participate in the study for approximately 40 days.