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Chemistry and Biology of Thyrotropin-Releasing Hormone (TRH) and its Analogs

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Abstract:

Thyrotropin-releasing hormone (TRH), a hypothalamic orally active neuropeptide, has been manifested in a wide range of biological responses. Besides its central role in regulating the pituitary-thyroid axis by simulating the release of thyrotropin, TRH has considerable influence on the activity of a number of neurobiological systems. Due to the therapeutic potential of TRH to treat several CNS maladies, the development of CNS-selective and metabolically stable TRH analogs is an area of interest. TRH is known to elicit its biological response through two G-protein coupled receptors for TRH (namely, TRH-R1 and TRH-R2). The distinct distribution of TRH receptors in tissues has provided opportunity to discover receptor subtype-specific analogs, which would demonstrate high CNS activities, and are completely free of hormonal activities. In this review, an in-depth analysis of the chemistry and biology of TRH and its analogs is provided. Recent discoveries of TRH-R2 selective analogs, TRH super agonists, metabolically stable TRH analogs, and targeted delivery of TRH analogs have been also discussed.

Keywords: CNS; Peptide; hormone; pituitary; receptors

Document Type: Research Article

DOI: http://dx.doi.org/10.2174/092986708786242912

Affiliations: Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar, Punjab 160 062, India.

Publication date: November 1, 2008

More about this publication?
  • Current Medicinal Chemistry covers all the latest and outstanding developments in medicinal chemistry and rational drug design. Each issue contains a series of timely in-depth reviews written by leaders in the field covering a range of the current topics in medicinal chemistry. Current Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments.
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