Seasonal changes of the ultrastructure of the hypophyseal pars tuberalis of the hedgehog (Erinaceus europaeus L.)

Many mammalian species utilise day-length (photoperiod) to adapt their physiology to seasonal changes in environmental conditions, via secretion of pineal melatonin. Photoperiodic regulation of prolactin secretion is believed to occur via melatonin-mediated changes in the secretion of a putative prolactin secretagogue, tuberalin, from the pituitary pars tuberalis. Despite the in vivo and in vitro evidence in support of this intra-pituitary signalling mechanism, the identity of tuberalin has yet to be elucidated. This paper reviews recent advances in the characterisation of tuberalin and the regulation of its secretion. Furthermore, the hypothesis that pituitary lactotroph cells display heterogeneity in their response to changing photoperiod and tuberalin secretion is examined.

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Seasonal changes of the ultrastructure of the pars tuberalis of the hypophysis of Rana temporaria

Cell and Tissue Research ◽

10.1007/bf00306718 ◽

1973 ◽

Vol 145 (4) ◽

pp. 459-469 ◽

Cited By ~ 10

Author(s):

M. P. Vandenberghe ◽

K. Dierickx ◽

N. Goossens

Keyword(s):

Seasonal Changes ◽

Rana Temporaria ◽

Pars Tuberalis

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Seasonal Ultrastructural Changes of the Hypophyseal Pars tuberalis in the Hedgehog (Erinaceus europaeus L.)

Cells Tissues Organs ◽

10.1159/000146643 ◽

1988 ◽

Vol 133 (3) ◽

pp. 217-223 ◽

Cited By ~ 15

Author(s):

A. Rüttern ◽

M. Hewing ◽

W. Wittkowski

Keyword(s):

Ultrastructural Changes ◽

Pars Tuberalis ◽

Erinaceus Europaeus

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Seasonal Changes and Environmental Control of Testicular Function in the Hedgehog, Erinaceus europaeus L.

Environmental Endocrinology - Proceedings in Life Sciences ◽

10.1007/978-3-642-66981-1_20 ◽

1978 ◽

pp. 111-112 ◽

Cited By ~ 2

Author(s):

M. Saboureau ◽

J. Boissin

Keyword(s):

Seasonal Changes ◽

Environmental Control ◽

Testicular Function ◽

Erinaceus Europaeus

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Spreading the Word: Seasonal Changes Mean New Opportunities for Media Coverage

ASHA Leader ◽

10.1044/leader.stw.18072013.np ◽

2013 ◽

Vol 18 (7) ◽

Keyword(s):

Media Coverage ◽

Seasonal Changes ◽

Swimming Pools

Summer kicking into high gear conjures images of swimming pools and barbeques. But before you book your beach house for the weekend, think about what the changing seasons can mean for you professionally.

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