Different hormones are produced by hypothalamus, anterior pituitary and other endocrine glands. Somewhere it is written that these are tropin hormone but at some places tropic word is used. So, I want to know the difference between tropin and tropic hormones. e.g. Growth hormone is somatotropic or somatotropin hormone
The Tropic hormones are the ones which influence the activities of other endocrine glands and are contrasted with non-tropic hormones which directly stimulate the tissue. For example mammotropin (prolactin) is tropic but cortisol or vasopressin is non-tropic.
The other definition that may confuse with tropic is trophic. Trophic hormones have specific growth stimulatory effects (hyperplastic or hypertrophic) on their target tissues.
I mean the hormones which end with -tropin are classified in Tropic hormones and have tropic effects. If one hormone stimulates any aspects of growth in one tissue, classifies as trophic hormones. So somatotropin is tropic and trophic hormone but IGF-1 is only trophic hormone.
To better understanding the definitions you can check Textbook of Medical Biochemistry edited by Chatterjea and Shinde (ISBN 978-93-5025-484-4).
Tropic hormones are those hormones which act on another endocrine gland/cells and stimulate production of other hormones. The tropic hormones are named as respective tropin. For example, adrenocorticotropic hormone (ACTH) is a tropic hormone which acts on the cells of adrenal cortex and stimulates synthesis and secretion of glucocorticoid hormones. Alternative name for ACTH (a tropic hormone) is corticotropin. Similarly, thyroid stimulating hormone (TSH) is a thyrotropic hormone (which acts on thyroid gland and stimulates synthesis and secretion of thyroid hormones) which is called as thyrotropin.
Hello Vinay Kant
please check the resources
https://books.google.co.in/books?isbn=9810227809
https://books.google.co.in/books?isbn=1420041304
http://www.enotes.com/homework-help/what-good-definition-tropic-hormone-175877
Tropic hormones are hormones that have other endocrine glands as their target. Most tropic hormones are produced and secreted by the anterior pituitary. The hypothalamus secretes tropic hormones that target the anterior pituitary, and the thyroid gland secretes thyroxine, which targets the hypothalamus and therefore can be considered a tropic hormone.
But , Trophic hormone is a hormone that has a growth effect, hyperplasia or hypertrophy, on the tissue it is stimulating.
Greeting
A tropic hormone effects other endocrine glands while a tropin hormone effects growth and development directly.
Best Regards Vinay Kant
The Tropic hormones are the ones that influence the activities of other endocrine glands and are contrasted with non-tropic hormones which directly stimulate the tissue. For example, mammotropin (prolactin) is tropic but cortisol or vasopressin is non-tropic. The other definition that may confuse with tropic is trophic. Trophic hormones have specific growth stimulatory effects (hyperplastic or hypertrophic) on their target tissues. We mean the hormones which end with -tropin is classified as Tropic hormones and have tropic effects. If one hormone stimulates any aspects of growth in one tissue, classifies as trophic hormones. So somatotropin is a tropic and trophic hormone but IGF-1 is only a trophic hormone.
https://www.quora.com/Is-it-correct-to-write-trophic-hormone-or-tropic-hormone
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