Diurnal expression patterns of neurohypophysial hormone genes in the brain of the threespot wrasse Halichoeres trimaculatus

Hur, Sung Pyo; Takeuchi, Yuki; Esaka, Yuriko; Wambiji, Nina; Park, Yong Ju; Kang, Hyeong Cheol; Jeong, Hyung Bok; Lee, Young Don; Kim, Se Jae; Takemura, Akihiro

doi:10.1016/j.cbpa.2010.12.011

Cited by 11 publications

(19 citation statements)

References 42 publications

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“…The role of IST has not yet been investigated in A. burtoni, but work in other teleosts suggests that this neuropeptide is also largely expressed in POA cell populations (Buchholz et al, 1995;Hur et al, 2011). Very little is known, however, about the distribution of the IST receptor throughout the brains of teleosts (Hausmann et al, 1995).…”

Section: Introductionmentioning

confidence: 95%

Distribution of nonapeptide systems in the forebrain of an African cichlid fish, Astatotilapia burtoni

Huffman

O’Connell

Kenkel

et al. 2012

Journal of Chemical Neuroanatomy

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Section: Introductionmentioning

confidence: 95%

Distribution of nonapeptide systems in the forebrain of an African cichlid fish, Astatotilapia burtoni

Huffman

O’Connell

Kenkel

et al. 2012

Journal of Chemical Neuroanatomy

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“…The neurophysin acts as carrier protein in the transport of the hormone from the hypothalamus, the copeptin, and is thought to function as a PRL -releasing factor (Nagy et al 1988) (Figure 1). The structure of the cinnamon clownfish AVT is similar to that of the white sucker (Heierhorst et al 1989), European flounder (Warne et al 2000), and three-spot wrasse Halichoeres trimachlatus (Hur et al 2011).…”

Section: Discussionmentioning

confidence: 96%

“…AVT is a nonapeptide hormone released by the neurohypophysis of teleost fish and other nonmammals (Acher and Chauvet 1995). AVT was also shown in the preoptic area (POA) of brain, and POA was shown in the pituitary, telencephalon, optic tectum, and cerebellum (Hur et al 2011). It is involved in various physiological functions, such as maintaining blood pressure (Warne and Balment 1995), antidiuretic functions (Henderson and Wales 1974;Amer and Brown 1995), and osmoregulation (Warne and Balment 1995).…”

Section: Introductionmentioning

confidence: 97%

Hypoosmotic shock adaptation by prolactin involves upregulation of arginine vasotocin and osmotic stress transcription factor 1 mRNA in the cinnamon clownfishAmphiprion melanopus

Park

Kim

Shin

et al. 2012

Animal Cells and Systems

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We cloned cDNA-encoding arginine vasotocin (AVT) from the brain of the cinnamon clownfish Amphiprion melanopus, and that was predicted to encode a protein of 153 amino acids. We examined changes in the expression of AVT mRNA in the brain and arginine vasotocin receptor (AVTR) mRNA and osmotic stress transcription factor 1 (OSTF1) mRNA in the gills of the cinnamon clownfish using quantitative real-time PCR in an osmotically changing environment (seawater (35 psu) 0 brackish water (BW, 17.5 psu) and BW with prolactin [PRL]). The expression of AVT, AVTR, and OSTF1 mRNA in the brain and gills increased after transfer to BW, and the expression was repressed by PRL treatment. AVT-immunoreactive cells were almost consistently observed in the telencephalon. The plasma Na ' and Cl ( levels decreased in BW, but the level of this parameter increased in BW with PRL treatment during salinity change. These results suggest that AVT, AVTR, and OSTF1 play important roles in hormonal regulation in osmoregulation organs, and that PRL improves the hyperosmoregulatory ability of cinnamon clownfish in BW environment.

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“…The fish (n = 4) brain were divided to five portions each, the telencephalon, optic tectum, diencephalon, cerebellum, and medulla oblongata (Hur et al 2011) (Fig. 1).…”

Section: Animalmentioning

confidence: 99%

“…In non-mammalian vertebrates, photic signals are transmitted via neural pathways from the retina to the pineal gland. These signals control the secretion of various hormones (Iigo et al 1997; Ayson and Takemura 2006;Revel et al 2006;Moore and Menaker 2011;Hur et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Circadian rhythm of melatonin secretion and growth-related gene expression in the tiger puffer Takifugu rubripes

Kim

Hur

et al. 2017

Fish Aquatic Sci

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Somatostatin (SS) and growth hormone-releasing hormone (GHRH) are primary factors regulating growth hormone (GH) secretion in the pituitary. To date, it remains unknown how this rhythm is controlled endogenously, although there must be coordination of circadian manners. Melatonin was the main regulator in biological rhythms, and its secretion has fluctuation by photic information. But relationship between melatonin and growth-related genes (ghrh and ss) is unclear. We investigated circadian rhythms of melatonin secretion, ghrh and ss expressions, and correlation between melatonin with growth-related genes in tiger puffer Takifugu rubripes. The melatonin secretion showed nocturnal rhythms under light and dark (LD) conditions. In constant light (LL) condition, melatonin secretion has similar patterns with LD conditions. ss1 mRNA was high during scotophase under LD conditions. But ss1 rhythms disappeared in LL conditions. Ghrh appeared opposite expression compared with melatonin levels or ss1 expression under LD and LL. In the results of the melatonin injection, ghrh and ss1 showed no significant expression compared with control groups. These results suggested that melatonin and growthrelated genes have daily or circadian rhythms in the tiger puffer. Further, we need to know mechanisms of each ss and ghrh gene regulation.

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Diurnal expression patterns of neurohypophysial hormone genes in the brain of the threespot wrasse Halichoeres trimaculatus

Cited by 11 publications

References 42 publications

Distribution of nonapeptide systems in the forebrain of an African cichlid fish, Astatotilapia burtoni

Distribution of nonapeptide systems in the forebrain of an African cichlid fish, Astatotilapia burtoni

Hypoosmotic shock adaptation by prolactin involves upregulation of arginine vasotocin and osmotic stress transcription factor 1 mRNA in the cinnamon clownfishAmphiprion melanopus

Circadian rhythm of melatonin secretion and growth-related gene expression in the tiger puffer Takifugu rubripes

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