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[Investigation of repeated marrow sampling from dogs]
1Toxicology Research Laboratories, Chugai Pharmaceutical Co., Ltd., Nagano, Japan.
Abstract:
In order to apply a marrow aspiration technique to the safety study employing dog, a series of 4 marrow aspirations from the sternum of Beagle dog at intervals of 30 days were performed. No remarkable changes were observed in general conditions, body weight, body temperature, hematology and bone marrow differential cell counts. Except a temporal increase of CPK activity at day 1, no significant changes were also observed in serum biochemical analysis.
Insights
Marrow aspiration in Beagle dogs showed no significant adverse effects on general health, hematology, or serum biochemistry over 30-day intervals. This technique is safe for safety studies involving dogs.
Area of Science:
- Veterinary Medicine
- Animal Hematology
- Biomedical Research
Context:
- Marrow aspiration is a critical procedure in preclinical safety studies.
- Evaluating the safety of repeated marrow aspiration in canine models is essential for ethical and reliable research.
- Beagle dogs are commonly used in toxicological and safety studies.
Purpose:
- To assess the safety and impact of repeated sternal marrow aspiration in Beagle dogs.
- To establish the feasibility of using this technique in longitudinal safety studies.
- To identify any potential adverse effects associated with the marrow aspiration procedure.
Summary:
- Four serial marrow aspirations were performed on Beagle dogs from the sternum at 30-day intervals.
- Evaluated parameters included general condition, body weight, body temperature, hematology, and bone marrow differential cell counts.
- Serum biochemical analysis, including creatine phosphokinase (CPK) activity, was also monitored.
Impact:
- The study demonstrates that repeated sternal marrow aspiration is well-tolerated in Beagle dogs.
- Findings support the use of this technique in canine safety studies without significant physiological disruption.
- Minimal changes, such as transient CPK elevation, suggest a safe profile for the marrow aspiration procedure.