The ribonucleic acid (RNA) and protein content of the ventromedial hypothalamic nuclei (VMH), the lateral hypothalamic areas (LHA) and the cortex (C) of adult male Wistar rats followed free access to food and water were determined at 6-hour intervals (at 6.00, 12.00, 18.00 and 24.00 h); the RNA and protein content of the suprachiasmatic nuclei (SCN) were determined at 12.00 and 24.00 h. The RNA content of the VMH, LHA and SCN differed at various intervals; in the cortex it did not alter significantly. The highest RNA concentration in the VMH was recorded at 18.00 h and in the LHA at 24.00 h, after which, in both areas, it fell. The lowest RNA content in the LHA and the VMH was found at 12.00 h. In the SCN, the RNA concentration at 24.00 h was significantly higher than at 12.00 h. The protein content did not alter significantly during the circadian cycle in any of the structures examined.

• MeSH
• Hypothalamic Area, Lateral analysis   metabolism   MeSH
• Time Factors MeSH
• Circadian Rhythm * MeSH
• Rats, Inbred Strains MeSH
• Rats MeSH
• Cerebral Cortex analysis   metabolism   MeSH
• Suprachiasmatic Nucleus analysis   metabolism   MeSH
• Ventromedial Hypothalamic Nucleus analysis   metabolism   MeSH
• Eating * MeSH
• Proteins analysis   MeSH
• RNA analysis   MeSH
• Animals MeSH
• Check Tag
• Rats MeSH
• Male MeSH
• Animals MeSH
• Publication type
• Journal Article MeSH
• Comparative Study MeSH
• Names of Substances
• Proteins MeSH
• RNA MeSH