Prothoracicotropic Hormone

作者: Wendy Smith , Robert Rybczynski

DOI: 10.1016/B978-0-12-384749-2.10001-9

关键词: MoultingMetamorphosisEcdysteroid secretionProthoracic glandProthoracicotropic hormoneInternal medicineEndocrinologyInsectHormoneEcdysoneBiology

摘要: Publisher Summary This chapter focuses on prothoracicotropic hormone (PTTH), a brain neuropeptide that stimulates the secretion of molting hormone, ecdysone, from prothoracic glands. Hardened portions cuticle restrict physical growth insects; insects solve this problem by periodic molts in which old is partly resorbed and shed new laid down, allowing for further growth. In addition, many undergo metamorphic significant changes structure occur. A suite hormones controls coordinates these episodes rapid developmental change. Physiological, biochemical, genetic studies PTTH have shaped our current understanding how insect metamorphosis are controlled. This reviews discovery followed sections describing structure, regulation release, cellular mechanisms ecdysteroid secretion. It ends with brief discussion glands roles played factors aside modified picture insects.

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