Asian-Australasian Journal of Animal Sciences (아세아태평양축산학회지)

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
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Expression of Cdc25B mRNA in Duodenal Mucosa of Chicken

  • Qin, Junhui (College of Veterinary Medicine, Nanjing Agricultural University) ;
  • Zhang, Hui (College of Veterinary Medicine, Nanjing Agricultural University) ;
  • Bao, Huijun (College of Veterinary Medicine, Nanjing Agricultural University) ;
  • Zhou, Qiang (College of Veterinary Medicine, Nanjing Agricultural University) ;
  • Liu, Yi (College of Veterinary Medicine, Nanjing Agricultural University) ;
  • Xu, Chunsheng (College of Veterinary Medicine, Nanjing Agricultural University) ;
  • Chu, Xiaohong (College of Veterinary Medicine, Nanjing Agricultural University) ;
  • Chen, Qiusheng (College of Veterinary Medicine, Nanjing Agricultural University)
  • Received : 2009.07.16
  • Accepted : 2009.10.08
  • Published : 2010.04.01

Abstract

Cdc25B is a mitotic regulator that might act as a starter phosphatase to initiate the positive feedback loop at the entry into mitotic (M) phase. In the present study, distribution of Cdc25B mRNA in duodenal mucosa of the chicken was demonstrated by means of in situ hybridization histochemistry (ISHH) using sense and antisense digoxigenin (DIG)-labeled RNA probes. The results showed that there were many labeled cells distributing in the duodenal mucosa of the adult chicken. Of these labeled cells, 81.60${\pm}$9.63% of Cdc25B mRNA positive cells was distributed in the basilar part and mid-portion of the intestinal gland and 36.21${\pm}$8.81% in the middle and basilar portion of villi of the small intestine of the chicken, respectively. Most of these labeled cells were positive in the regions of the stem cell and proliferation. The signals of ISHH decreased from basilar to upper part in the crypt of Lieberkuhn and weakened in the inferior villi of the duodenum. Moreover, the positive signals were both in the cytoplasm and cell nucleus. However, the labeled cells were negative in both the lamina muscularis mucosae and muscular layer. The results of ISHH suggested the existence of Cdc25B mRNA and vigorous proliferation activities in the duodenal mucosa of adult chicken, replenishing the cells which had sloughed off from the superior part of the villus. Our results provide some molecular evidence for a regular pattern of avian intestinal epitheliosis and functional partition and provide an approach to further study of the locations of Cdc25B in the chicken.

Keywords

Duodenal Mucosa of Chicken;Cdc25B mRNA;Probe Synthesis;In situ Hybridization Histochemistry

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Acknowledgement

Supported by : National Science Foundation of China

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