How to Conserve Test Article, Time and Money with Telemetry

Posted by CorDynamics on March 11th, 2014

Here’s a familiar dilemma. Your research team detects unanticipated cardiovascular activity in your lead candidate but there is limited test article for follow-up discovery and safety studies.

In these cases, we often suggest either conscious telemetry or an anesthetized preparation in the guinea pig as an effective model for cardiovascular testing, when appropriate. Since they are smaller in size, guinea pigs can serve as a viable species when compound supply is limited.

In some cases, the guinea pig can use five times less compound to conduct studies than amounts needed for their larger counterparts, such as rabbits.

The Conscious Model

Using telemetry to deliver quasi beat-to-beat data, this guinea pig model generates ultra high fidelity QT interval correction. View Conscious Validation Data

The Anesthetized Model

In this preparation, we employ a well-characterized anesthetized method to screen for cardiovascular effects early. Cardiovascular parameters such as blood pressure, heart rate, as well as ECG are measured and cardiac functional assessments can also be provided. View Anesthetized Validation Data

While a plus in terms of compound conservation, the guinea pig’s small size and inherent anatomical obstacles do pose potential roadblocks. This is especially true in the hands of less experienced technical personnel. Guinea pigs have rather obscure vascular access due to the lack of a tail and their orogastric structure can make orally dosing somewhat challenging.

Although the guinea pig is not appropriate for every situation, with careful planning and expert execution, this species does indeed play a valuable role in the successful de-risking funnels employed by a number of our biopharmaceutical clients.

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