AAS ›› 2015, Vol. 46 ›› Issue (5): 655-659.

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Expression of oligodendrocyte transcription factor and neurological cadherin in the developing spinal cord of the human embryo

ZHANG Yong1 ZHANG Ju-shi2 CHEN Jian-er1 LIU Xue-hong 1*   

  • Received:2015-03-03 Revised:2015-06-16 Online:2015-10-06 Published:2015-10-06
  • Contact: xuehong LIU E-mail:liuxueh6588@126.com

Abstract:

Objective To investigate distribution of the oligodendrocyte transcription factor (Olig) and neurological cadherin(N-cadherin) in the developing human embryonic spinal cord and their clinical significance. Methods Immunohistochemistry was uesd to detect the expression and distribution of Olig and N-cadherin proteins in the spinal cord of 17 human embryos at the second, third or fourth month gestation. One-Way ANOVA and LSD-t test were employed to compare positive expression number and intensity values of Olig and N-cadherin proteins in spinal cord tissues detected in the 3 fetal periods. Results At the second to fourth gestation, the positive expressions of Olig and N-cadherin were seen in the human embryonic spinal cord. With the increase of gestational age, the intensity values of N-cadherin positive cells were gradually increased in the spinal cord, and positive expression intensity values were 117.77±6.72,129.63±9.44 and 133.35±8.15(P<0.01), respectively. Olig positive expression intensity values showed an up and then down trend were 69.98±24.59,85.10±9.19 and 71.62±11.81(P<0.05), respectively. The number of Olig positive cells in the spinal cord were gradually increased and were 9.38±7.80,15.55±7.30,25.59±14.54 (P<0.01), respectively. The results of Olig and N-cadherin showed a significant difference in the spinal cord. Conclusion At the second to fourth gestation, the positive expressions of N-cadherin and Olig suggest that they are closely related to the nerve and glial cells differentiation and development in the spinal cord tissues during the human embryonic growth and development.

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