PMID- 9105460
OWN - NLM
STAT- MEDLINE
DCOM- 19970703
LR  - 20190716
IS  - 0001-6489 (Print)
IS  - 0001-6489 (Linking)
VI  - 117
IP  - 2
DP  - 1997 Mar
TI  - A contribution to the structural pattern differences between the apical and basal 
      spiral ganglions in mammals.
PG  - 250-3
AB  - The purpose of this paper was to establish a mammalian comparative study between 
      the neuronal spaces of the upper versus the basal cochlear turns. We studied with 
      light microscopy i) Webster albino rat embryos at various gestational days (GD), 
      and a postnatal (PN) series; ii) kittens 3 weeks old; iii) pigmented guinea pig 
      embryos and also PN specimens; iv) diverse human fetuses. As from the 16th GD, 
      the apical spiral ganglion primordium of the rat appears as a spherical cluster 
      of cells immersed in the mesenchymal modular tissue whereas the basal spiral 
      primordium displays a pyramidal shape with its apex towards the auditory 
      receptor. Both ganglions keep this shape until the rat becomes adult. This 
      structural pattern also appears in the cat, guinea pig and in human material. 
      This morphological model enables a radial stratification of the peripheral and 
      central auditory nerve projections. A thin uni- or bicellular connective layer 
      covers the tympanic scala side of the apical spiral ganglion as from 8 hours 
      after birth in the rat. No gap is detected in this layer which is: mesenchymal in 
      the embryonic and fetal stages (rat, guinea pig, human), connective in PN rat and 
      kitten, and osseous in PN guinea pig and in the human neonate.
FAU - Sanchez-Fernandez, J M
AU  - Sanchez-Fernandez JM
AD  - Otolaryngology Department, Basurto Hospital, School of Medicine, University of 
      the Basque Country, Bilbao, Spain.
FAU - Sanchez-del Rey, A
AU  - Sanchez-del Rey A
FAU - Santaolalla-Montoya, F
AU  - Santaolalla-Montoya F
FAU - Martinez Ibarguen, A
AU  - Martinez Ibarguen A
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - England
TA  - Acta Otolaryngol
JT  - Acta oto-laryngologica
JID - 0370354
SB  - IM
MH  - Animals
MH  - Cats
MH  - Guinea Pigs
MH  - Humans
MH  - Rats
MH  - Spiral Ganglion/*cytology/embryology
EDAT- 1997/03/01 00:00
MHDA- 1997/03/01 00:01
CRDT- 1997/03/01 00:00
PHST- 1997/03/01 00:00 [pubmed]
PHST- 1997/03/01 00:01 [medline]
PHST- 1997/03/01 00:00 [entrez]
AID - 10.3109/00016489709117781 [doi]
PST - ppublish
SO  - Acta Otolaryngol. 1997 Mar;117(2):250-3. doi: 10.3109/00016489709117781.