Cell dynamics in the embryonic and postnatal vomeronasal epithelium of snakes

Holtzman, David A.

doi:10.1002/(sici)1097-0029(19980615)41:6<471::aid-jemt3>3.0.co;2-q

Cited by 8 publications

(11 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Behavioral experiments performed to determine whether the VNS is functional at birth in species that possess it at this stage suggest that in snakes it is functional (Holtzman, 1998;Holtzman and Halpern, 1990), whereas in rabbits and mice it is not (Hudson and Distel, 1984;Coppola et al, 1993), although in some other rodents (e.g., guinea pigs and rats) it might be (Mendoza and Khü nel, 1989;Coppola and Millar, 1994). It has even been suggested that in rats it may be functional in utero (Pedersen et al, 1983; see also for revision, Hudson, 1993).…”

Section: Discussionmentioning

confidence: 99%

Development of the vomeronasal receptor epithelium and the accessory olfactory bulb in sheep

Salazar

Lombardero

Alemañ

et al. 2003

Microscopy Res & Technique

View full text Add to dashboard Cite

The morphological development of the vomeronasal organ (VNO) and accessory olfactory bulb (AOB) of the sheep from anlage to birth were studied by classical and histochemical methods using embryos and fetuses obtained from an abattoir with ages estimated from crown-to-rump length. Both VNO and AOB developed in a biologically logical sequence and completed their morphological development around day 98, at entry into the last third of the gestation period. A lectin with specificity for oligomeric N-acetylglucosamine labeled the sensory epithelium of the VNO, the vomeronasal nerves, and the nervous and glomerular layers of the AOB before birth. These results suggest that the vomeronasal system, which is well developed and functional in adult sheep, may be able to function at or even before birth in these animals (whereas in rodents, for example, this is precluded by the AOB not completing its development until after birth).

show abstract

Section: Discussionmentioning

confidence: 99%

Development of the vomeronasal receptor epithelium and the accessory olfactory bulb in sheep

Salazar

Lombardero

Alemañ

et al. 2003

Microscopy Res & Technique

View full text Add to dashboard Cite

show abstract

“…Regardless of the decline in rate with age, neurogenesis yields both V1R and V2R expressing populations in a similar proportion, indicating stochastic production of VSNs (de la Rosa-Prieto et al, 2010). The decline in “normal” proliferative levels is observed in other species, for example the opossum (Jia and Halpern, 1998) and snake (Holtzman, 1998) and is likely to be a feature common to all vertebrates.…”

Section: The Effect Of Organismal Age On Neurogenesis In the Olfactormentioning

confidence: 96%

“…The structural development of the vomeronasal epithelium in the garter snake ( Thamnophis sirtalis ) appears to be more similar to that of the OE, but by birth the neuronal precursors are restricted to the basal layer (Holtzman, 1998). In the frog Rana japonica , late VNO development relative to OE formation is also observed; the OE is largely adult-like in tadpoles 1 month after hatching, but the VNO is not complete until the end of metamorphosis (Taniguchi et al, 1996).…”

Section: The Embryonic Origins Of the Olfactory Epitheliamentioning

confidence: 99%

A lifetime of neurogenesis in the olfactory system

Brann¹,

Firestein²

2014

Front. Neurosci.

191

139

View full text Add to dashboard Cite

Neurogenesis continues well beyond embryonic and early postnatal ages in three areas of the nervous system. The subgranular zone supplies new neurons to the dentate gyrus of the hippocampus. The subventricular zone supplies new interneurons to the olfactory bulb, and the olfactory neuroepithelia generate new excitatory sensory neurons that send their axons to the olfactory bulb. The latter two areas are of particular interest as they contribute new neurons to both ends of a first-level circuit governing olfactory perception. The vomeronasal organ and the main olfactory epithelium comprise the primary peripheral olfactory epithelia. These anatomically distinct areas share common features, as each exhibits extensive neurogenesis well beyond the juvenile phase of development. Here we will discuss the effect of age on the structural and functional significance of neurogenesis in the vomeronasal and olfactory epithelia, from juvenile to advanced adult ages, in several common model systems. We will next discuss how age affects the regenerative capacity of these neural stem cells in response to injury. Finally, we will consider the integration of newborn neurons into an existing circuit as it is modified by the age of the animal.

show abstract

“…Details in their developmental changes have also been well-documented in various species [4,7,8,19,[23][24][25][26]. Since the VNO is embryologically derived from the nasal placode as is the OE [13].…”

mentioning

confidence: 99%

Embryonic and Postnatal Differentiation of Olfactory Epithelium and Vomeronasal Organ in the Syrian Hamster

Taniguchi

2008

The Journal of Veterinary Medical Science

View full text Add to dashboard Cite

ABSTRACT. The details of the embryonic and postnatal differentiation of the olfactory epithelium (OE) and vomeronasal organ (VNO) were examined by light and electron microscopy in the Syrian hamster. At 10 days of gestation, the nasal placode is invaginated to form the olfactory pit on either side at the rostral end of the embryo. Abundant mitotic figures are observed near the free surface of the epithelium lining the olfactory pit. At 11 days of gestation, the mass of the epithelium lining a recess is separated from the medial wall of the olfactory pit to form the VNO. At 13 days of gestation, mitotic figures become observable in the basal layer of the vomeronasal sensory epithelium (VSE) in addition to the superficial to middle layers, while in the OE mitotic figures are observed mainly in the middle to basal layer. At 1 day after birth, the OE is almost complete in differentiation. On the other hand, the VSE differentiate slowly to retain some immature properties even at 10 days after birth. These findings suggest that the olfactory function seems to be solely ascribed to the OE for a while after birth. The significance of mitotic figures are discussed in the course of development with special reference to the origin of the nasal placode from the central nervous system. KEY WORDS: differentiation, fine structure, mitosis, olfactory epithelium, vomeronasal organ.

show abstract

Cell dynamics in the embryonic and postnatal vomeronasal epithelium of snakes

Cited by 8 publications

References 56 publications

Development of the vomeronasal receptor epithelium and the accessory olfactory bulb in sheep

Development of the vomeronasal receptor epithelium and the accessory olfactory bulb in sheep

A lifetime of neurogenesis in the olfactory system

Embryonic and Postnatal Differentiation of Olfactory Epithelium and Vomeronasal Organ in the Syrian Hamster

Contact Info

Product

Resources

About