Distribution of adrenomedullin-like immunoreactivity in the brain of the adult sea lamprey

Pombal, Manuel A.; López, Jesús M.; Arriba, María del Carmen de; González, Agustı́n; Megı́as, Manuel

doi:10.1016/j.brainresbull.2007.10.011

Cited by 4 publications

(3 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most of these fibers divide into an ascending branch reaching the rostral rhombencephalon and a descending branch to the rostral part of the spinal cord and were interpreted as gustatory fibers (Fritzsch and Northcutt, ). It should be noted that lampreys are the oldest extant vertebrates possessing taste buds (reviewed in Barreiro‐Iglesias et al, ); although a secondary gustatory nucleus has not been yet characterized in these animals, a nucleus equivalent to the nucleus of the solitary tract has been immunohistochemically identified with different antibodies: tachykinins (Auclair et al, ), neuropeptide FF (Pombal et al, ), or adrenomedullin (Pombal et al, ). Moreover, a projection from this nucleus to the middle and posterior reticular nuclei was also demonstrated in larval lampreys (González et al, ).…”

Section: Introductionmentioning

confidence: 99%

Development and Functional Organization of the Cranial Nerves in Lampreys

Pombal

Megı́as

2018

The Anatomical Record

Self Cite

View full text Add to dashboard Cite

Lampreys, together with hagfishes, are the only extant representatives of the oldest branch of vertebrates, the agnathans, which are the sister group of gnathostomes; therefore, studies on these animals are of great evolutionary significance. Lampreys exhibit a particular life cycle with remarkable changes in their behavior, concomitant, in part, with important modifications in the head and its musculature, which might influence the development of the cranial nerves. In this context, some cranial nerves such as the optic nerve and the ocular motor nerves, which develop slowly during an extremely long larval period lasting more than five years, have been more thoroughly investigated; however, much less experimental information is available about others, such as the facial or the hypoglossal nerves. In addition, the possible existence of a "true" accessory nerve in these animals is still a matter of conjecture. Although growing in last decades, investigations on the physiology of the lamprey cranial nerves is scanty. This review focuses on past and recent findings that have contributed to characterize the anatomical organization of the cranial nerves in lampreys, including their components and nuclei, and their relations in the brain; in addition, comments on their development and functional role are also included. Anat Rec, 2018. © 2018 Wiley Periodicals, Inc.

show abstract

Section: Introductionmentioning

confidence: 99%

Development and Functional Organization of the Cranial Nerves in Lampreys

Pombal

Megı́as

2018

The Anatomical Record

Self Cite

View full text Add to dashboard Cite

show abstract

“…From the point of entrance of nIX to the level of the obex, fine varicose fibers left the longitudinal tract in a medio‐dorsal direction to terminate in a well‐delineated nucleus, just adjacent to the tract, in the lateral alar plate. This nucleus has been previously suggested to be the lamprey homologue of the mammalian nucleus of the solitary tract (NTS), based on its location and neurochemical evidence (Albersheim‐Carter et al, ; Auclair, Lund, & Dubuc, ; Barreiro‐Iglesias, Anadón, & Rodicio, ; Pombal, López, de Arriba, González, & Megías, ; Pombal, López, de Arriba, Megías, & González, ). The present data corroborate this homology hypothesis (see Section 4).…”

Section: Resultsmentioning

confidence: 99%

“…Along this tract, the fibers terminate at all levels in a well‐delineated nucleus, just medial to the tract, in the caudal hindbrain, but do not reach spinal levels. Based on immunohistochemical data, previous studies have suggested that this nucleus is the lamprey homologue of the mammalian NTS (Auclair et al, ; Barreiro‐Iglesias et al, ; Pombal et al, , ; Robertson, Auclair, Ménard, Grillner, & Dubuc, ). The present study strongly supports this hypothesis by showing that this nucleus is the primary target of taste bud afferents in lampreys as in other vertebrates (Beckstead & Norgren, ; Contreras, Beckstead, & Norgren, ; Finger, , ; Hamilton & Norgren, ; Herrick, ; Norgren & Leonard, ).…”

Section: Discussionmentioning

confidence: 99%

Sensory cutaneous papillae in the sea lamprey (Petromyzon marinus L.): I. Neuroanatomy and physiology

Daghfous

Auclair

Blumenthal

et al. 2019

J of Comparative Neurology

View full text Add to dashboard Cite

Molecules present in an animal's environment can indicate the presence of predators, food, or sexual partners and consequently, induce migratory, reproductive, foraging, or escape behaviors. Three sensory systems, the olfactory, gustatory, and solitary chemosensory cell (SCC) systems detect chemical stimuli in vertebrates. While a great deal of research has focused on the olfactory and gustatory system over the years, it is only recently that significant attention has been devoted to the SCC system. The SCCs are microvillous cells that were first discovered on the skin of fish, and later in amphibians, reptiles, and mammals. Lampreys also possess SCCs that are particularly numerous on cutaneous papillae. However, little is known regarding their precise distribution, innervation, and function. Here, we show that sea lampreys (Petromyzon marinus L.) have cutaneous papillae located around the oral disk, nostril, gill pores, and on the dorsal fins and that SCCs are particularly numerous on these papillae. Tract‐tracing experiments demonstrated that the oral and nasal papillae are innervated by the trigeminal nerve, the gill pore papillae are innervated by branchial nerves, and the dorsal fin papillae are innervated by spinal nerves. We also characterized the response profile of gill pore papillae to some chemicals and showed that trout‐derived chemicals, amino acids, and a bile acid produced potent responses. Together with a companion study (Suntres et al., Journal of Comparative Neurology, this issue), our results provide new insights on the function and evolution of the SCC system in vertebrates.

show abstract

Multimodal hypothalamo-hypophysial communication in the vertebrates

Trudeau

Somoza

2020

General and Comparative Endocrinology

View full text Add to dashboard Cite

Distribution of adrenomedullin-like immunoreactivity in the brain of the adult sea lamprey

Cited by 4 publications

References 25 publications

Development and Functional Organization of the Cranial Nerves in Lampreys

Development and Functional Organization of the Cranial Nerves in Lampreys

Sensory cutaneous papillae in the sea lamprey (Petromyzon marinus L.): I. Neuroanatomy and physiology

Multimodal hypothalamo-hypophysial communication in the vertebrates

Contact Info

Product

Resources

About