Induction of galanin-like peptide gene expression in the rat posterior pituitary gland during endotoxin shock and adjuvant arthritis

被引:21
作者
Saito, J
Ozaki, Y
Ohnishi, H
Nakamura, T
Ueta, Y
机构
[1] Univ Occupat & Environm Hlth, Sch Med, Dept Physiol, Yahatanishi Ku, Kitakyushu, Fukuoka 8078555, Japan
[2] Univ Occupat & Environm Hlth, Sch Med, Dept Orthoped, Kitakyushu, Fukuoka 8078555, Japan
来源
MOLECULAR BRAIN RESEARCH | 2003年 / 113卷 / 1-2期
关键词
galanin-like peptide; posterior pituitary gland; lipopolysaccharide; adjuvant arthritis; in situ hybridization histochemistry;
D O I
10.1016/S0169-328X(03)00129-3
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Galanin-like peptide (GALP) was recently isolated from the porcine hypothalamus. The GALP mRNA is restricted in the hypothalamic arcuate nucleus and pituicytes in the posterior pituitary grand (PP) of the rat. The physiological function of the GALP is not clear in both areas. We focused on the regulation of the GALP gene expression to determine the role of GALP in the PP. We examined the effects of potent stressors to modulate a pituitary function, nociceptive stimuli and acute and chronic inflammatory stresses on the expression of the GALP gene in the PP using in situ hybridization histochemistry. Subcutaneous (s.c.) injection of 5% formalin in the bilateral hind paws caused a moderate increase of GALP gene expression in the PP. Intraperitoneal (i.p.) injection of lipopolysaccharide (LPS) also caused a marked increase of GALP gene expression in the PP. Effects of i.p. injection of LPS on the expression of the GALP gene in the PP were attenuated by pretreatment with i.p. injection of indomethacin. The levels of GALP mRNA in the PP were markedly increased by two peaks at 24 h and 15 days after s.c. injection of heat-inactivated M. butyricum that induced adjuvant arthritis. These results suggested that inflammatory stresses may be a potent stimulant to induce the expression of the GALP gene in the PP. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:124 / 132
页数:9
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