Circadian time-keeping during early stages of development
نویسندگان
چکیده
منابع مشابه
Morphologic Evaluation of the Fertilized and Unfertilized Ostrich Egg during the Early Stages of Development (MRI Analysis)
Introduction: The magnetic resonance imaging (MRI) technique permits to monitor the development of the embryo in vivo without causing any developmental defects. Although increasing application of MRI imaging are predicted in veterinary sciences, there is little information available about MRI studies of avian embryos and their eggs. The objective of the present study was to evaluate the o...
متن کاملMicroRNA gene regulation cascades during early stages of plant development.
MicroRNAs (miRNAs) regulate various developmental programs of plants. This review focuses on miRNA involvement in early events of plant development, such as seed germination, seedling development and the juvenile to adult phase transition. miR159 and miR160 are involved in the regulation of seed germination through their effects on the sensitivity of seeds to ABA. miR156 and miR172 play critica...
متن کاملCircadian Genes Are Expressed during Early Development in Xenopus laevis
BACKGROUND Circadian oscillators are endogenous time-keeping mechanisms that drive twenty four hour rhythmic changes in gene expression, metabolism, hormone levels, and physical activity. We have examined the developmental expression of genes known to regulate circadian rhythms in order to better understand the ontogeny of the circadian clock in a vertebrate. METHODOLOGY/PRINCIPAL FINDINGS In...
متن کاملThyroid gland development in Rachycentron canadum during early life stages.
The aim of this study was to describe the ontogeny of thyroid follicles in cobia Rachycentron canadum. Larvae were sampled daily (n=15 - 20) from hatching until 15 dah (days after hatching). Following, larvae were sampled every two days by 28 dah; a new sample was taken at 53 dah. The samples were dehydrated, embedded in Paraplast, and sections of 3 µm were dewaxed, rehydrated and stained with ...
متن کاملCircadian time-keeping system in birds: A review
In contrast to the highly centralised circadian clock in mammals, where the master clock resides in the anterior hypothalamic nucleus, as suprachiasmatic nucleus (SCN), the avian circadian timing machinery is more complicated with 3 circadian clock centresthe retina, hypothalamus and pineal. These three autonomous circadian oscillators interact with one another to regulate overt circadian rhyth...
متن کاملذخیره 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: Proceedings of the National Academy of Sciences
سال: 2006
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.0600571103