Interactions morphogènes au cours de l'histogenèse du corpuscule de Herbst, étudiées à l'aide de transplantations hétérochrones

Development ◽  
1972 ◽  
Vol 27 (3) ◽  
pp. 585-601
Author(s):  
Raymond Saxod

Morphogenetic interactions during the histogenesis of Herbst's corpuscle, as studied by heterochronic transplantations Duck embryo frontal buds or bill fragments have been transplanted to the frontal bud or limb bud of early duck embryo hosts. Results show that: (1) Somato-sensory nerve endings are able to participate in corpuscle histogenesis as soon as they reach 14 days of incubation. (2) However, corpuscle histogenesis can take place only in dermis that is older than 20 days of incubation. (3) The time at which the corpuscles form in a graft of a given age is independent of the total duration of graft innervation. The results, which demonstrate the existence of morphogenetic interactions between the dermal mesenchyme and the nerve endings, are discussed in connexion with what is known about the origin of Herbst's corpuscle and the role of nerve and cutaneous tissue in its development. A schematic model is proposed for the morphogenetic sequence of Herbst's corpuscle.

Development ◽  
1972 ◽  
Vol 27 (2) ◽  
pp. 277-300
Author(s):  
Par Raymond Saxod

Role of nerve and cutaneous tissue in the development of Herbst's and Grandry's corpuscles Frontal buds or pieces of the bill of duck and chick embryos have been explanted on the chorioallantoic membrane, transplanted as homo- or xeno-plastic grafts to the flank, the frontal bud and the limb bud of early host embryos, or associated as coelomic grafts with various isolated nerve sources. Results show that: 1. The onset of the histogenesis of Herbst's and Grandry's cutaneous sensory corpuscles is entirely dependent on the presence of a nerve ending, irrespective of the stage at which the graft is obtained. The nerve ending is also required for the maintenance of the structural integrity of the previously differentiated corpuscles and for their subsequent development. 2. Only somato-sensory nerve endings are able to ensure the development of the corpuscles; central connexions are not required. Sympathetic or somato-motor fibres are not able to sustain the development of the corpuscles. 3. The corpuscle type, as well as corpuscle distribution, is in conformity with the origin of the integument in which it develops and is determined by the specificity and regional quality of the innervated dermal mesenchyme. The determination of the cutaneous territory occurs at a very early stage (prior to the 3rd day of incubation in the frontal bud of the duck). 4. Heterotopic or xenoplastic innervation of the graft between duck and chick does not alter the cutaneous specificity of the differentiation. However, corpuscles did not differentiate when duck frontal buds were innervated by mouse spinal ganglia. These results are discussed in connexion with what is known about peripheric sense organs in vertebrates. A schematic model is proposed for the mechanism of the morphogenesis of the corpuscles.


2001 ◽  
Vol 134 (4) ◽  
pp. 771-776 ◽  
Author(s):  
Annick de Vries ◽  
Carolien van Rijnsoever ◽  
Ferdi Engels ◽  
Paul A J Henricks ◽  
Frans P Nijkamp

1984 ◽  
Vol 2 (2) ◽  
pp. 169-176 ◽  
Author(s):  
Zdenek Halata ◽  
Marie A. Badalamente ◽  
Roger Dee ◽  
Michael Propper

1998 ◽  
Vol 7 (3) ◽  
pp. 338
Author(s):  
M Tamai ◽  
M Kurokawa ◽  
S Okajima ◽  
N Takenaka ◽  
Y Takubo ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document