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Related Concept Videos

Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response01:15

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Circadian rhythms are cyclic changes that are crucial in plasma drug concentrations. Various standard circadian parameters, including core body temperature, heart rate, and other cardiovascular factors, directly impact disease states and the therapeutic response to drug therapy.
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
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Related Experiment Video

Updated: Oct 12, 2025

The DREAM Implant: A Lightweight, Modular, and Cost-Effective Implant System for Chronic Electrophysiology in Head-Fixed and Freely Behaving Mice
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Implantable system for chronotherapy.

Seung Ho Lee1, Qianqian Wan1, Adam Wentworth1,2

  • 1The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

Science Advances
|November 26, 2021
PubMed
Summary
This summary is machine-generated.

This study presents a new implantable device for precise drug delivery, enhancing chronotherapy. The system improves treatment efficacy for conditions like diabetes and hypertension by controlling medication timing.

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Area of Science:

  • Biomedical Engineering
  • Pharmacology
  • Chronobiology

Background:

  • Mammalian physiology exhibits significant diurnal variations in biological mediators.
  • Pharmacobiology research highlights the importance of drug delivery timing for enhanced efficacy.

Purpose of the Study:

  • To develop a novel implantable system for controlled, timed drug administration (chronotherapy).
  • To demonstrate the system's efficacy in preclinical models for chronic conditions.

Main Methods:

  • Development of a battery-free, refillable, subcutaneous implantable device.
  • Integration with an external wearable system and mobile app for precise dosing control.
  • In vivo testing in a diabetic rat model using bromocriptine and antihypertensives.

Main Results:

  • The implantable system successfully facilitated timed drug delivery.
  • Bromocriptine administration via the device improved glycemic control in diabetic rats.
  • The device demonstrated potential for delivering antihypertensives, relevant to diurnal hypertension patterns.

Conclusions:

  • Implantable chronotherapy devices offer precise control over drug administration timing.
  • This technology has the potential to significantly improve treatment effectiveness for various chronic diseases.
  • The system's adaptability suggests broad clinical applications in personalized medicine.