河北医科大学学报

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甲状旁腺素(134)对卵巢切除大鼠椎间盘软骨终板Ⅰ型胶原及Ⅹ型胶原表达的影响

  

  1. 河北医科大学第三医院创伤急救中心,河北省骨科生物力学重点实验室,河北 石家庄 050051
  • 出版日期:2018-02-25 发布日期:2018-02-06
  • 作者简介:骆阳(1982-),男,河北石家庄人,河北医科大学第三医院主治医师,医学博士,从事骨外科疾病诊治研究。
  • 基金资助:
    河北省医学科学研究重点课题(20170137)

The effect of parathyroid hormone(134) on the expressions of type Ⅰ collagen and type Ⅹ collagen in the cartilage endplate on ovariectomized rat model#br#

  1. 1.Department of Orthopaedic Surgery, the Third Hospital of Hebei Medical University, Key Laboratory
    of Orthopaedic Biomechanics of Hebei Provinc, Shijiazhuang 050051, China
  • Online:2018-02-25 Published:2018-02-06

摘要: [摘要]〓
〖HTH〗目的〖HTSS〗〖KG*2〗探讨甲状旁腺素(parathyroid hormone,PTH)(134)对卵巢切除(ovariectomy,OVX)大鼠椎间盘软骨终板Ⅰ型胶原及Ⅹ型胶原表达的影响。
〖HTH〗方法〖HTSS〗〖KG*2〗30只3月龄雌性SD大鼠随机分为3组:假手术组(Sham)、卵巢切除组(OVX)及卵巢切除+甲状旁腺素(134)组(OVX+PTH)。OVX组及OVX+PTH组行双侧卵巢切除术后12周,OVX+PTH组大鼠给予皮下注射PTH(134)(30 μg·kg-1·d-1)。连续用药12周后,处死大鼠并收集标本。各组大鼠软骨终板行van Gieson染色及组织学观察,Ⅰ型胶原及Ⅹ型胶原行免疫组织化学染色分析。
〖HTH〗结果〖HTSS〗〖KG*2〗软骨终板经van Gieson染色显示,Sham组软骨终板形态正常,而OVX组软骨终板内可见大量骨样组织形成,并且在骨样组织中可见髓腔形成及血细胞的出现,OVX+PTH组软骨终板内可见少量骨样组织形成及少量髓腔出现。免疫组织化学染色显示,OVX组软骨终板内Ⅰ型胶原及Ⅹ型胶原表达显著高于Sham组(P<0.05),而OVX+PTH组Ⅰ型胶原及Ⅹ型胶原表达显著低于OVX组(P<005)。
〖HTH〗结论〖HTSS〗〖KG*2〗皮下注射甲状旁腺素(134)可有效抑制OVX大鼠椎间盘软骨终板Ⅰ型胶原及Ⅹ型胶原的表达。

关键词: 椎间盘, 软骨终板, 胶原Ⅰ型, 胶原Ⅹ型, 甲状旁腺素

Abstract: 〗[Abstract] Objective〖HTSS〗〓To investigate the effects of parathyroid hormone(PTH)(134) on the expressions of type Ⅰ collagen and type Ⅹ collagen in the cartilage endplate on  ovariectomized(OVX) rat model.
〖HTH〗〖WTHZ〗Methods〖HTSS〗〓Thirty female SpragueDawley rats, 3 month of age, were randomly divided into three groups: the shamoperated (Sham) group and two ovariectomized groups treated with vehicle or PTH(134) (30 μg·kg-1·d-1) for twelve weeks. Treatment was started after twelve weeks postOVX and continued for twelve weeks. At the end of experiment, histology and immunohistochemistry analysis were performed to all groups.
〖HTH〗〖WTHZ〗Results〖HTSS〗〓 The cartilage endplate in the Sham group appeared normal. In the OVX group, the cartilage endplate showed degenerative changes, where the bony tissues that contained bone marrow, hematopoietic lineage cells and mineralized bone, became more obvious. In contrast, the histological morphology in the OVX + PTH group showed a fewer bony tissues formed in the cartilage endplate. The results of molecular analysis revealed a significant increase in type Ⅰ collagen and type Ⅹ collagen expressions in the OVX group than that in the Sham group(P<005), and marked reductions in the type Ⅰ collagen and type Ⅹ collagen expressions in the OVX+PTH group than that in the OVX group(P<005).
〖HTH〗〖WTHZ〗Conclusion〖HTSS〗〓PTH(134) treatment was effective in reducing the expression of type Ⅰ collagen and type Ⅹ collagen in the cartilage endplate in OVX rats.

Key words: intervertebral disc, cartilage endplate, collagen type Ⅰ, collagen type Ⅹ, parathyroid hormone