Tissue Physiology of Cynomolgus Monkeys: Cross-Species Comparison and Implications for Translational Pharmacology
| Autor: | Jessica Couch, Sheila Ulufatu, C. Andrew Boswell, Danielle Mandikian, Gregory Z. Ferl, Saileta Prabhu, Isabel Figueroa, Amy Oldendorp, Sean B. Joseph, Noel Dybdal, Michelle G. Schweiger, Hanine Rafidi |
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| Rok vydání: | 2018 |
| Předmět: |
Male
0301 basic medicine Rodent Pharmaceutical Research Pharmaceutical Science Adipose tissue Spleen Pharmacology 030226 pharmacology & pharmacy Mice 03 medical and health sciences 0302 clinical medicine Bolus (medicine) Drug Development Species Specificity Pharmacokinetics biology.animal medicine Extracellular Animals Tissue Distribution Blood Volume biology Chemistry Body Weight Blood flow Rats Macaca fascicularis Red blood cell 030104 developmental biology medicine.anatomical_structure Blood-Brain Barrier Models Animal Female Radiopharmaceuticals Blood Flow Velocity |
| Zdroj: | The AAPS Journal. 20 |
| ISSN: | 1550-7416 |
| Popis: | We previously performed a comparative assessment of tissue-level vascular physiological parameters in mice and rats, two of the most commonly utilized species in translational drug development. The present work extends this effort to non-human primates by measuring tissue- and organ-level vascular volumes (Vv), interstitial volumes (Vi), and blood flow rates (Q) in cynomolgus monkeys. These measurements were accomplished by red blood cell labeling, extracellular marker infusion, and rubidium chloride bolus distribution, respectively, the same methods used in previous rodent measurements. In addition, whole-body blood volumes (BV) were determined across species. The results demonstrate that Vv, Vi, and Q, measured using our methods scale approximately by body weight across mouse, rat, and monkey in the tissues considered here, where allometric analysis allowed extrapolation to human parameters. Significant differences were observed between the values determined in this study and those reported in the literature, including Vv in muscle, brain, and skin and Q in muscle, adipose, heart, thymus, and spleen. The impact of these differences for selected tissues was evaluated via sensitivity analysis using a physiologically based pharmacokinetic model. The blood-brain barrier in monkeys was shown to be more impervious to an infused radioactive tracer, indium-111-pentetate, than in mice or rats. The body weight-normalized total BV measured in monkey agreed well with previously measured value in rats but was lower than that in mice. These findings have important implications for the common practice of scaling physiological parameters from rodents to primates in translational pharmacology. |
| Databáze: | OpenAIRE |
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