MORPHOLOGICAL ORGANIZATION OF CRUSTACEAN PIGMENTARY EFFECTORS
نویسندگان
چکیده
منابع مشابه
Crustacean Pigmentary-Effector Hormones: Chemistry and Functions of RPCH, PDH, and Related Peptides1
SYNOPSIS. Integumental color changes and eye pigment movements in crustaceans are regulated by pigmentary-effector hormones. The identified hormones include: an octapeptide RPCH (red pigment-concentrating hormone) and several forms of octadecapeptide PDH (pigment-dispersing hormone: a-PDH, b-PDH). RPCH-related peptides (AKHs, adipokinetic hormones) and PDH-related peptides (PDFs, pigment-disper...
متن کاملPigmentary Disorders
Many factors have been implicated for the etiology of melasma, but the exact cause of this hypermelanosis is poorly understood. However, it is considered to result from solar radiation and genetic predisposition. Moreover, pregnancy, oral contraception and hormone replacement therapy with natural and synthetic oestrogens, have been involved in the pathogenesis of this hypemelanosis. Despite the...
متن کاملGenetics of pigmentary disorders.
The genetic and molecular bases of various types of congenital pigmentary disorders have been classified in the past 10 years, as follows: (1) disorders of melanoblast migration in the embryo from the neural crest to the skin: piebaldism; Waardenburg syndrome 1-4 (WS1-WS4); dyschromatosis symmetrica hereditaria. (2) Disorders of melanosome formation in the melanocyte: Hermansky-Pudlak syndrome ...
متن کاملPigmentary dispersion.
A long-term study of primary pigmentary dispersion has shown that the condition is commoner in males than females and appears most frequently in the third decade. After 10 years there may be a significant reduction in the amount of pigment deposited on the cornea, and the condition of several patients receiving treatment for glaucoma has remained under control when treatment has been stopped.
متن کاملformation and evolution of regional organizations: the case study of the economic cooperation organization (eco)
abstract because of the many geopolitical, geo economical and geo strategically potentials and communicational capabilities of eco region, members can expand the convergence and the integration in base of this organization that have important impact on members development and expanding peace in international and regional level. based on quality analyzing of library findings and experts interv...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Biological Bulletin
سال: 1981
ISSN: 0006-3185,1939-8697
DOI: 10.2307/1540803