SciELO - Scientific Electronic Library Online

vol.36 issue2Histomorphological Study of Placenta in Gestational Diabetes MellitusDescriptive Body Composition Profile in Female Olympic Volleyball Medalists Defined Using Multichannel Bioimpedance Measurement: Rio 2016 Team Case Study author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google


International Journal of Morphology

On-line version ISSN 0717-9502


CONEI, Daniel et al. Immunolocalization of Sonic Hedgehog in Embryo-Fetal Mouse ( Mus musculus ) Development. Int. J. Morphol. [online]. 2018, vol.36, n.2, pp.693-698. ISSN 0717-9502.

Sonic hedgehog (Shh) is an essential morphogen for the development of various structures, such as notochord, neural tube floor plate, limbs, among others. We sought to determine the immunolocalization of Shh in embryos and mouse fetuses. To do this, 10 pregnant mice (Mus musculus) BALB /c were euthanized, a group of 5 animals at 12.5 days postcoitus (dpc), and another group at 17.5 dpc. Embryos and fetuses obtained were fixed in 10 % formalin buffered in PBS and embedded in paraplast. Serial cross sections were made. Polyclonal antibody Shh (Santa Cruz Biotechnology, H-160, rabbit), dilution 1:100 was used. The immunolocalization of the positively labeled samples was identified and described. Shh expression in 12.5 dpc embryos was immunopositive in notochord, neural tube floor plate, radius precartilage and ulna, and practically all epithelia: bronchial, intestinal, bladder and urethra. In the fetal stage, at 17.5 dpc the immunopositivity disappears in the cartilage except for areas of ossification, decreases in the epidermis but appears in hair follicles. The intestinal mucosa has differentiated into segments, showing greater immunostaining at the level of the intestinal villi. Shh acts in different stages of the gestational period, being key in the differentiation of different structures. In embryonic stages, it is vital in the formation of the nervous system, organogenesis and formation of limbs, so its expression is found in these areas. However, in the fetal stage the expression changes to more specialized structures such as hair follicles and intestinal villi.

Keywords : Sonic hedgehog; Morphogen; Organogenesis; Immunohistochemistry.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )