Pineal noradrenaline levels in the monogolian gerbil and in different strains of laboratory rats over a lighting regimen

William W. Morgan; Russel J. Reiter

doi:10.1016/0024-3205(77)90096-0

Pineal noradrenaline levels in the monogolian gerbil and in different strains of laboratory rats over a lighting regimen

William W. Morgan, Russel J. Reiter

Department of Cell Systems & Anatomy

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Adult male Long Evans and Sprague-Dawley rats and Mongolian gerbils were sacrificed at 4 hour intervals over a 24 hour period. Pineal noradrenaline (NA) levels in these animals were determined by a radioisotopic procedure. Statistically significant circadian rhythms were observed in pineal NA content in both strains of rats but not in the gerbils. These data show that daily rhythms in pineal NA are a characteristic phenomenon observed in rats either with or without eye pigment. The absence of a daily rhythm in NA content in the gerbil pineal may explain the relatively low amplitude rhythm in N-acetyl transferase activity observed in this species compared to the rat.

Original language	English (US)
Pages (from-to)	555-558
Number of pages	4
Journal	Life Sciences
Volume	21
Issue number	4
DOIs	https://doi.org/10.1016/0024-3205(77)90096-0
State	Published - Aug 15 1977

ASJC Scopus subject areas

Biochemistry, Genetics and Molecular Biology(all)
Pharmacology, Toxicology and Pharmaceutics(all)

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10.1016/0024-3205(77)90096-0

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title = "Pineal noradrenaline levels in the monogolian gerbil and in different strains of laboratory rats over a lighting regimen",

abstract = "Adult male Long Evans and Sprague-Dawley rats and Mongolian gerbils were sacrificed at 4 hour intervals over a 24 hour period. Pineal noradrenaline (NA) levels in these animals were determined by a radioisotopic procedure. Statistically significant circadian rhythms were observed in pineal NA content in both strains of rats but not in the gerbils. These data show that daily rhythms in pineal NA are a characteristic phenomenon observed in rats either with or without eye pigment. The absence of a daily rhythm in NA content in the gerbil pineal may explain the relatively low amplitude rhythm in N-acetyl transferase activity observed in this species compared to the rat.",

author = "Morgan, {William W.} and Reiter, {Russel J.}",

note = "Funding Information: *Supported by NSF grant IkPCM 76-03876 (WPM) and NSF grant (iPCM 74-06276-A02 (RJR) . **WWM is a recipient of Research Scientist Development Award $1 RO2 MH 00028 .",

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T1 - Pineal noradrenaline levels in the monogolian gerbil and in different strains of laboratory rats over a lighting regimen

AU - Morgan, William W.

AU - Reiter, Russel J.

N1 - Funding Information: *Supported by NSF grant IkPCM 76-03876 (WPM) and NSF grant (iPCM 74-06276-A02 (RJR) . **WWM is a recipient of Research Scientist Development Award $1 RO2 MH 00028 .

PY - 1977/8/15

Y1 - 1977/8/15

N2 - Adult male Long Evans and Sprague-Dawley rats and Mongolian gerbils were sacrificed at 4 hour intervals over a 24 hour period. Pineal noradrenaline (NA) levels in these animals were determined by a radioisotopic procedure. Statistically significant circadian rhythms were observed in pineal NA content in both strains of rats but not in the gerbils. These data show that daily rhythms in pineal NA are a characteristic phenomenon observed in rats either with or without eye pigment. The absence of a daily rhythm in NA content in the gerbil pineal may explain the relatively low amplitude rhythm in N-acetyl transferase activity observed in this species compared to the rat.

AB - Adult male Long Evans and Sprague-Dawley rats and Mongolian gerbils were sacrificed at 4 hour intervals over a 24 hour period. Pineal noradrenaline (NA) levels in these animals were determined by a radioisotopic procedure. Statistically significant circadian rhythms were observed in pineal NA content in both strains of rats but not in the gerbils. These data show that daily rhythms in pineal NA are a characteristic phenomenon observed in rats either with or without eye pigment. The absence of a daily rhythm in NA content in the gerbil pineal may explain the relatively low amplitude rhythm in N-acetyl transferase activity observed in this species compared to the rat.

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Pineal noradrenaline levels in the monogolian gerbil and in different strains of laboratory rats over a lighting regimen

Abstract

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