title: Developmental expression and distribution of nesfatin-1/NUCB2 in the canine digestive system.
abstract: Nesfatin-1/NUCB2 is a neuropeptide that plays important roles in regulating food intake and energy homeostasis. The distribution of nesfatin-1/NUCB2 protein and mRNA has not been investigated in the canine digestive system. The present study was conducted to evaluate the expression of nesfatin-1/NUCB2 protein and NUCB2 mRNA in the canine digestive organs (esophagus, stomach, duodenum, jejunum, ileum, cecum, colon, rectum, liver and pancreas). The tissues of the digestive system were collected from dogs at different developmental stages (infantile, juvenile, pubertal and adult). Nesfatin-1/NUCB2 protein localization in the organs of adult dogs was detected by immunohistochemistry. The expression of NUCB2 mRNA at the four developmental stages was analyzed by real-time fluorescence quantitative PCR (qRT-PCR). Nesfatin-1/NUCB2 protein was distributed in the fundic gland region of the stomach, and the islet area and exocrine portions of the pancreas. However, NUCB2 mRNA was found in all digestive organs, although the expression levels in the pancreas and stomach were higher than those in liver, duodenum and other digestive tract tissues (P<0.05) at the four different developmental stages of the dogs. In this study, nesfatin-1/NUCB2 was found to be present at high levels in the stomach and pancreas at both the protein and mRNA levels; however, NUCB2 expression was found at lower levels in all of the digestive organs. These findings provide the basis of further investigations to elucidate the functions of nefatin-1 in the canine digestive system.
authors.affiliation: Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, PR China; Anhui Provincial Laboratory of Animal Genetic Resources Protection and Breeding, Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, PR China.
authors.forename: Shudong
authors.initials: S
authors.lastname: Jiang
authors.affiliation: Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, PR China.
authors.forename: Weijuan
authors.initials: W
authors.lastname: Zhou
authors.affiliation: Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, PR China.
authors.forename: Xingwang
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, PR China.
authors.forename: Dengfeng
authors.initials: D
authors.lastname: Wang
authors.affiliation: Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, PR China.
authors.forename: Hui
authors.initials: H
authors.lastname: Zhu
authors.affiliation: Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, PR China.
authors.forename: Meizhen
authors.initials: M
authors.lastname: Hong
authors.affiliation: Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, PR China.
authors.forename: Yajing
authors.initials: Y
authors.lastname: Gong
authors.affiliation: Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, PR China.
authors.forename: Jing
authors.initials: J
authors.lastname: Ye
authors.affiliation: Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, PR China; Anhui Provincial Laboratory of Animal Genetic Resources Protection and Breeding, Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, Anhui, PR China. Electronic address: fgfang@ahau.edu.cn.
authors.forename: Fugui
authors.initials: F
authors.lastname: Fang
mesh_terms: D000818:Animals; D002135:Calcium-Binding Proteins / Q000235:genetics / Q000378:metabolism*; D004268:DNA-Binding Proteins / Q000235:genetics / Q000378:metabolism*; D004064:Digestive System / Q000254:growth & development / Q000378:metabolism*; D004285:Dogs; D005260:Female; D015870:Gene Expression; D018507:Gene Expression Regulation, Developmental; D009419:Nerve Tissue Proteins / Q000235:genetics / Q000378:metabolism*; D000080866:Nucleobindins; D009928:Organ Specificity; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism
chemical_list: D002135:Calcium-Binding Proteins; D004268:DNA-Binding Proteins; D009419:Nerve Tissue Proteins; D000080866:Nucleobindins; D012333:RNA, Messenger
keywords: Digestive system; Dogs; Nesfatin-1/NUCB2