Effect of sympathetic denervation of the pineal gland on maternal co-ordination of the circadian rhythm of α-amylase in parotid gland from young rats
| Autor: | E. G. Sanz, S. L. Bellavia, Raquel Vivian Gallará, A. R. Carpentieri, N. T. Vermouth |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Male
medicine.medical_specialty Superior cervical ganglion Photoperiod Mothers Biology Pineal Gland Melatonin Pineal gland stomatognathic system Pregnancy Internal medicine Lactation medicine Animals Parotid Gland Circadian rhythm Rats Wistar Sympathectomy Maternal-Fetal Exchange General Dentistry Salivary gland Maternal effect Cell Biology General Medicine Circadian Rhythm Rats Parotid gland medicine.anatomical_structure Endocrinology Otorhinolaryngology Female alpha-Amylases medicine.drug |
| Zdroj: | Archives of Oral Biology. 38:1121-1125 |
| ISSN: | 0003-9969 |
| DOI: | 10.1016/0003-9969(93)90175-l |
| Popis: | Twenty-five-day-old rats maintained in constant darkness since birth and born from mothers kept in the dark since the 14th day of pregnancy showed a circadian rhythm of α-amylase content in parotid glands, which may be explained by a mechanism of maternal co-ordination. Rats in the same conditions, except that their mothers had been submitted to bilateral excision of the superior cervical ganglia 30 days before mating, did not show diurnal variations of α-amylase activity in the parotid glands. When ganglionectomized mothers were treated with a daily dose of melatonin (1 mg/kg) from the 14th day of gestation up to the 10th day of lactation, their litters showed significant diurnal variations of amylase in the parotid glands, suggesting a role of the maternal pineal gland in the maternal-fetal and/or maternal-neonatal transfer of photoperiodic information. |
| Databáze: | OpenAIRE |
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