Neuronal nitric oxide synthase immunoreactivity in forebrain, pineal, and pituitary of Oreochromis mossambicus (Tilapia)

Singru, Praful S.; Sakharkar, Amul J.; Mazumdar, Minakshi; Subhedar, Nishikant K.

doi:10.1007/s10695-007-9169-y

Cited by 7 publications

(1 citation statement)

References 42 publications

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“…To validate this hypothesis, we have analyzed the effect of the acute hyperosmotic stress on the expression of nos1 and Nos activity in the POR and the hypothalamus of the Mozambique tilapia, O. mossambicus [42], which express Nos enzymes [200]. Fish were exposed to 70% SW and the response to salinity was evaluated in the first eight hours following the salinity change by semi-quantitative RT-PCR.…”

Section: Putative Role Of No In the Neuroendocrine Modulation Of Tmentioning

confidence: 99%

Nitric Oxide and the Neuroendocrine Control of the Osmotic Stress Response in Teleosts

Cioni

Angiulli

Toni

2019

IJMS

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The involvement of nitric oxide (NO) in the modulation of teleost osmoresponsive circuits is suggested by the facts that NO synthase enzymes are expressed in the neurosecretory systems and may be regulated by osmotic stimuli. The present paper is an overview on the research suggesting a role for NO in the central modulation of hormone release in the hypothalamo-neurohypophysial and the caudal neurosecretory systems of teleosts during the osmotic stress response. Active NOS enzymes are constitutively expressed by the magnocellular and parvocellular hypophysiotropic neurons and the caudal neurosecretory neurons of teleosts. Moreover, their expression may be regulated in response to the osmotic challenge. Available data suggests that the regulatory role of NO appeared early during vertebrate phylogeny and the neuroendocrine modulation by NO is conservative. Nonetheless, NO seems to have opposite effects in fish compared to mammals. Indeed, NO exerts excitatory effects on the electrical activity of the caudal neurosecretory neurons, influencing the amount of peptides released from the urophysis, while it inhibits hormone release from the magnocellular neurons in mammals.

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Section: Putative Role Of No In the Neuroendocrine Modulation Of Tmentioning

confidence: 99%

Nitric Oxide and the Neuroendocrine Control of the Osmotic Stress Response in Teleosts

Cioni

Angiulli

Toni

2019

IJMS

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Seasonality in expression and distribution of nitric oxide synthase isoforms in the testis of the catfish, Clarias batrachus: Role of nitric oxide in testosterone production

Pathak

Lal

2010

Comparative Biochemistry and Physiology Part C: Toxicology &

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Neuroanatomical localization of nitric oxide synthase (nNOS) in the central nervous system of carp,Labeo rohitaduring post‐embryonic development

Biswas

Jadhao

Bhoyar

et al. 2015

Intl J of Devlp Neuroscience

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Nitric oxide (NO) is a chemically diffusible molecular messenger playing various roles in both vertebrates and invertebrates. Nitric oxide synthase (NOS) is the key enzyme in synthesis of NO. The neuroanatomical distribution pattern of neuronal nitric oxide synthase (nNOS) was studied and developing stages of Labeo rohita such as hatchlings (10-15mm), frys (15-35mm), semi-fingerlings (35-65mm), fingerlings (65-100mm) and adults (350-370mm) were used. In the telencephalon, nitrergic cells were observed in both pallial and subpallial regions along with entopeduncular nucleus suggesting the involvement of NO in the control of sensory functions throughout the development. In the diencephalon, nNOS positive neurons were localized in the nucleus preopticus periventricularis and preopticus parvocellularis throughout development while nucleus preopticus magnocellularis was found immunopositive only in adult specimens who suggest the involvement of NO in the hormonal regulation. nNOS immunoreaction was also noted in suprachaismatic nucleus, habenula, lateral tuberal nucleus, paraventricular organ and anterior division of preglomerular nucleus throughout development. In the mesencephalic region, nNOS immunoreactivity was seen in the optic tectum, torus longitudinalis, nucleus of median longitudinal fascicle and occulomotor nucleus indicate the role of NO in integration of visual inputs and modulates motor control of the eyes and movements. Caudally, in the rhombencephalon, the cerebellum, the nucleus reticularis, the octaval nucleus and the motor nucleus of vagal nerve were nNOS positive during development. nNOS reactive cells and fibers were noted in the spinal motor column, thus suggesting a role of NO in gestation and startle response from early development.

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Neuronal nitric oxide synthase immunoreactivity in forebrain, pineal, and pituitary of Oreochromis mossambicus (Tilapia)

Cited by 7 publications

References 42 publications

Nitric Oxide and the Neuroendocrine Control of the Osmotic Stress Response in Teleosts

Nitric Oxide and the Neuroendocrine Control of the Osmotic Stress Response in Teleosts

Seasonality in expression and distribution of nitric oxide synthase isoforms in the testis of the catfish, Clarias batrachus: Role of nitric oxide in testosterone production

Neuroanatomical localization of nitric oxide synthase (nNOS) in the central nervous system of carp,Labeo rohitaduring post‐embryonic development

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