Distribution of galanin‐like immunoreactivity in the brain of the turtle <i>Mauremys caspica</i>

Jiménez, Antonio‐J.; Mancera, J.M.; Pérez-Fígares, J. M.; Fernández-Llébrez, Pedro

doi:10.1002/cne.903490106

Cited by 36 publications

(54 citation statements)

References 45 publications

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“…The absence of galaninergic perikarya in the telencephalon of the U. acanthinura was unexpected but agrees with results obtained in the snake [18] and turtle [9] and differs from those found in amphibians [19,20], birds [16,17] and mammals [12,13,15] where the immunoreactive neurons were detected in the septum. This latter is supposed to be involved in the regulation of the water balance [52,53].…”

Section: Telencephalonsupporting

confidence: 87%

“…The anti-galanin used in the present study has been used elsewhere in mammalian [12] and non-mammalian vertebrates, including the turtle M. caspica [9] and the snake B. jararaca [18].…”

Section: Discussionmentioning

confidence: 99%

“…In fact, in fish, the perikarya have been identified in the preoptic and tuberal hypothalamus [8,[23][24][25]33]. In amphibians [19,20], birds [16,17] and chelonian [9], galanin-Ir neurons were found in the hypothalamus, telencephalon, mesencephalon and rombencephalon. In mammals, the galanin-Ir cell bodies were widely distributed in the CNS, particularly in the hypothalamus in the preoptic area, the infundibular/arcuate nucleus, the mediobasal hypothalamus, and periphery of the supraoptic and the paraventricular nuclei [12,13,15,34,35].…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, the expression of galanin is elevated following estrogen administration, neuronal activation, denervation and/or nerve injury, as well as during development [1]. The use of immunohistochemical methods revealed a wide distribution of galanin in the brain of several vertebrate groups: mammals [12][13][14][15], birds [16,17], reptiles [9,18], amphibians [19][20][21][22] and fish [8,[23][24][25].…”

Section: Introductionmentioning

confidence: 99%

“…The galanin stimulates food intake in the goldfish C. au- www.fhc.viamedica.pl ratus [28], while it does not affect feeding in the neonatal chicks [29]. Despite their crucial position among vertebrate phylogeny, there have been only two studies published on the distribution of galanin in a reptilian species, the turtle M. caspica [9] and the snake B. jararaca [18].…”

Section: Introductionmentioning

confidence: 99%

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Galanin immunoreactivity in the brain of the desert lizard Uromastyx acanthinura during activity season

Hammouche

Bennis

2013

Folia Histochem Cytobiol.

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Abstract:The distribution of galanin immunoreactive perikarya and nerve fibers in the brain of the desert lizard U. acanthinura was studied by means of immunofluorescence using an antiserum against rabbit galanin. The animals were captured during the activity season in March (wet season) just before reproduction period and in June (arid season) after ovulation period. Immunoreactive neurons were mostly detected in the mediobasal and the infundibular recess nuclei, the nucleus of the paraventricular organ, the paraventricular organ, the periventricular nucleus and in the anterior hypothalamus at the level of the periventricular nucleus, the paraventricular nucleus and the supraoptic nucleus. The differences in brain galanin expression between animals collected under both sets of environmental conditions indicated changes which occur during the annual and reproductive cycles. The wide hypothalamic and extrahypothalamic distribution of galanin immunoreactive fibers suggests that this peptide may have hypophysiotropic, neuromodulator and neurotransmitter roles in the lizard U.

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Section: Telencephalonsupporting

confidence: 87%

“…The anti-galanin used in the present study has been used elsewhere in mammalian [12] and non-mammalian vertebrates, including the turtle M. caspica [9] and the snake B. jararaca [18].…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Galanin immunoreactivity in the brain of the desert lizard Uromastyx acanthinura during activity season

Hammouche

Bennis

2013

Folia Histochem Cytobiol.

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Distribution of galanin‐like immunoreactive elements in the brain of the adult lamprey Lampetra fluviatilis

et al. 1996

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Galanin is a brain-gut peptide present in the central nervous system of vertebrates and invertebrates. The distribution of galanin-like immunoreactive perikarya and fibers in the brain of the river lamprey Lampetra fluviatilis (Agnatha) has been studied immunocytochemically by using antisera against rat and porcine galanin. Galanin-like immunoreactive perikarya were seen in the telencephalon and mediobasal diencephalon. In the telencephalon, they were present in the nucleus olfactorius anterior, nucleus basalis, and especially, in the nucleus commissurae anterioris. The diencephalon contained most of the immunoreactive neurons. They were located in the nucleus commissurae praeinfundibularis, nucleus ventralis hypothalami, nucleus commissurae postinfundibularis, nucleus ventralis thalami, and nucleus dorsalis thalami pars medius. Most of the galanin-like immunoreactive infundibular neurons showed apical processes contacting the cerebrospinal fluid. Immunoreactive fibers and terminals were widely distributed throughout the neuraxis. In the telencephalon, the richest galaninergic innervation was found in the nucleus olfactorius anterior, lobus subhippocampalis, corpus striatum, and around the nucleus septi and the nucleus praeopticus. In the diencephalon, the highest density of galanin-like immunoreactive fibers was seen in the nucleus commissurae postopticae, nucleus commissurae praeinfundibularis, nucleus ventralis hypothalami, nucleus dorsalis hypothalami, and neurohypophysis. In the mesencephalon and rhombencephalon, the distribution of immunoreactive fibers was heterogeneous, being most pronounced in a region between the nucleus nervi oculomotorii and the nucleus interpeduncularis mesencephali, in the nucleus isthmi, and in the raphe region. A subependymal plexus of immunoreactive fibers was found throughout the ventricular system. The distribution of immunoreactive neurons and fibers was similar to that of teleosts but different to those of other vertebrate groups. The possible hypophysiotropic and neuroregulatory roles of galanin are discussed.

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Sex difference and steroidal stimulation of galanin immunoreactivity in the ferret's dorsal preoptic area/anterior hypothalamus

1997

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A sexually dimorphic male nucleus (MN) is seen in Nissl-stained sections from the dorsal preoptic area/anterior hypothalamus (dPOA/AH) of male, but not female, ferrets. We used immunohistochemical methods to determine whether particular neuropeptides are found in cells of the MN. A sexually dimorphic cluster of galanin-immunoreactive (IR) cells was found in the dPOA/AH of ferrets killed either on embryonic day (E) 38 or in adulthood. Significantly more galanin-IR cells were distributed in the MN and in other subregions of the dPOA/AH of intact breeding males than estrous females. The density of galanin-IR cells in the dPOA/AH was significantly reduced in adult males by castration and restored to the level of intact breeding males by daily injections of testosterone propionate (TP) for 5 weeks. The same TP treatment failed to augment the density of galanin-IR cells in the dPOA/AH of adult, ovariectomized females. Computer-assisted image analysis and grid-crossing analysis showed that the area and the number of galanin-IR fibers in the dPOA/AH were significantly greater in adult females than in males, regardless of subjects' concurrent steroidal condition. A cluster of galanin-IR cells was present in the dPOA/AH of males, but not females, killed on either E34 or E38. Administration of TP between E28 and E37 significantly increased the density of galanin-IR cells in the dPOA/AH of females killed on E38, up to the level seen in control males. The results suggest that the capacity of cells located in the dPOA/AH to express galanin after adult steroid exposure is sexually differentiated by the fetal action of testosterone, or its metabolite, estradiol, in males.

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Distribution of galanin‐like immunoreactivity in the brain of the turtle Mauremys caspica

Cited by 36 publications

References 45 publications

Galanin immunoreactivity in the brain of the desert lizard Uromastyx acanthinura during activity season

Galanin immunoreactivity in the brain of the desert lizard Uromastyx acanthinura during activity season

Distribution of galanin‐like immunoreactive elements in the brain of the adult lamprey Lampetra fluviatilis

Sex difference and steroidal stimulation of galanin immunoreactivity in the ferret's dorsal preoptic area/anterior hypothalamus

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