Ultrastructure of the Olfactory Epithelium of Kittens

Abstract

Kociánová I., F. Tich˘, A. Goro‰ová: Ultrastructure of the Olfactory Epithelium of Kittens. Acta Vet. Brno 2001, 70: 375-379.The structure of the olfactory epithelium of a 35-to-40-day-old kitten was studied by transmission electron microscopy. The samples were collected from the ethmoidal labyrinth. At this stage of development, the regio olfactoria was lined by a typical pseudostratified olfactory epithelium built of olfactory cells, sustentacular cells, and basal cells. The height of the epithelium varied between 16 and 18 µm. A characteristic feature of the free surface of the epithelium was a considerable degree of differentiation. Protruding above the surface were endings of dendritic projections of sensory cells with a diameter of 0.8-to-1.0 µm carrying numerous atypical cilia and 1.0-to-1.5 µm long microvilli of sustentacular cells. Supranuclear segments of the supportive and olfactory cells contained a large amount of rough and smooth endoplasmic reticulum and numerous elongated mitochondria. Long dendritic projections of the olfactory cells were closely surrounded by apical cytoplasm of the sustentacular cells. Contacts among the cells were provided by close intercellular links. The data on the structure of the olfactory epithelium of 35-to-40-day-old kittens indicate that the epithelium at this age is fully functional. Sense organs, transmission electron microscopy, olfactory epithelium, ontogenesis

Comparative ultrastructure of the olfactory system in the East African root rat (Tachyoryctes splendens) and the naked mole rat (Heterocephalus glaber)

“…Anatomical studies on the olfactory system have largely focused on animals dwelling on the surface of the earth, in water and those that fly. Some of the species that have been studied include humans (Chen et al., 2014; Kavoi & Hassanali, 2011; Stevenson, 2009), birds (Healy & Guilford, 1990), pigs (Holubcova et al., 1997), kittens (Kocianova et al., 2001), sheep (Kavoi et al., 2010; Kocianova et al., 2003), goat (Kavoi & Hassanali, 2011; Mogi et al., 2007; Mohamed et al., 2019), dog (Kavoi et al., 2010; Mohamed et al., 2019; Qin‐guo et al., 2008) laboratory animals (Barrios et al., 2014; Carey et al., 2009; Furudono et al., 2013; Iwema et al., 2004; Kavoi et al., 2012; Meister & Bonhoeffer, 2001; Yokosuka, 2012) and fishes (Chakrabarti & Ghosh, 2011; Kim et al., 2019).…”

Development of olfactory epithelium and associated structures in the green iguana,Iguana iguana—light and scanning electron microscopic study

“…The olfactory region is distinguished from the respiratory region by the presence of submucosal Bowman’s glands and the absence of goblet cells (Rehorek, Firth & Hutchinson, 2000). Some authors, who describe olfactory epithelium in other non-squamate vertebrate species, divide the mature cells of the olfactory epithelium into three main groups—olfactory cells, sustentacular (supporting) cells and basal cells (Kocianova, Tichy & Gorosova, 2001; Morrison & Costanzo, 1990; Kratzing, 1975; Polyzonis et al, 1979). Similar cell populations were also described in reptiles (Kondoh et al, 2012).…”

Peer Review #1 of "Development of olfactory epithelium and associated structures in the green iguana, Iguana iguana—light and scanning electron microscopic study (v0.1)"

“…The olfactory region is distinguished from the respiratory region by the presence of submucosal Bowman's glands and the absence of goblet cells . Authors, who describe olfactory epithelium in other non-squamate vertebrate species, divide the mature cells of the olfactory epithelium into 3 main groups -olfactory cells, sustentacular (supporting) cells and basal cells (Kocianova et al, 2001, Morrison and Constanzo 1990, Kratzing, 1975, Polyzonis et al, 1979. Similar cell populations were also described in reptiles (Kondoh et al, 2012).…”