Abstract:
:The purpose of this study was to determine whether human parathyroid hormone (h-PTH) enhances trabecular bone mass and connectivities that were reduced by streptozotocin (STZ)-induced diabetes in rats. Seven-month-old female Wistar rats were injected with STZ or its vehicle intraperitoneally. All vehicle-injected normal controls were sacrificed 0, 4, 6, 8, 12, 14, and 16 weeks after injection, and one-third of the STZ-injected rats were sacrificed as the baseline controls 4, 6, and 8 weeks after the injection. Eight-week h-PTH (6. 0 microg/kg, 6 times a week) or its vehicle treatment by subcutaneous injection for residual diabetic rats was started 4, 6, or 8 weeks after the STZ injection. The rats' proximal right tibiae were processed for undecalcified Villanueva bone staining sections for bone histomorphometry. Furthermore, changes in trabecular connectivities were determined by node-strut analysis. The decreased cancellous bone volume (BV/TV) and turnover in diabetic rats were recovered in all PTH-treated groups. In node-strut analysis, the node-related parameters (N.Nd/TV, NdNd/TV) were significantly increased by PTH when it was administered 4 weeks after STZ injection but were not increased when administration was started after 6 weeks. The results indicated that PTH enhanced bone turnover and bone mass but not trabecular connectivity in the late stage of diabetes in rats. Early treatment of osteoporosis is important in preventing fractures caused by decreased bone strength resulting from decreased trabecular connectivity.
journal_name
Calcif Tissue Intjournal_title
Calcified tissue internationalauthors
Tsuchida T,Sato K,Miyakoshi N,Abe T,Kudo T,Tamura Y,Kasukawa Y,Suzuki Kdoi
10.1007/pl00005838subject
Has Abstractpub_date
2000-03-01 00:00:00pages
229-33issue
3eissn
0171-967Xissn
1432-0827pii
CT79-99journal_volume
66pub_type
杂志文章abstract::The small proteoglycan decorin had been localized previously at the d-band in the gap zone of collagen fibrils in nonmineralizing tissues. In bone matrix this zone is proteoglycan free and is at least in some species the place where mineralization along collagen fibrils starts. To study the metabolism of the small pro...
journal_title:Calcified tissue international
pub_type: 杂志文章
doi:10.1007/s002239900279
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journal_title:Calcified tissue international
pub_type: 杂志文章
doi:10.1007/BF02555127
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journal_title:Calcified tissue international
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journal_title:Calcified tissue international
pub_type: 杂志文章
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journal_title:Calcified tissue international
pub_type: 杂志文章
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journal_title:Calcified tissue international
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journal_title:Calcified tissue international
pub_type: 杂志文章
doi:10.1007/s002239900560
更新日期:1998-12-01 00:00:00
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journal_title:Calcified tissue international
pub_type: 杂志文章
doi:10.1007/s00223-009-9217-y
更新日期:2009-05-01 00:00:00
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journal_title:Calcified tissue international
pub_type: 杂志文章
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更新日期:2001-12-01 00:00:00
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journal_title:Calcified tissue international
pub_type: 杂志文章
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更新日期:2012-07-01 00:00:00
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journal_title:Calcified tissue international
pub_type: 杂志文章
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journal_title:Calcified tissue international
pub_type: 杂志文章
doi:10.1007/BF02556695
更新日期:1987-06-01 00:00:00
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journal_title:Calcified tissue international
pub_type: 杂志文章
doi:10.1007/BF02556592
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pub_type: 临床试验,杂志文章
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更新日期:2003-02-01 00:00:00
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journal_title:Calcified tissue international
pub_type: 杂志文章
doi:10.1007/BF00582169
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journal_title:Calcified tissue international
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journal_title:Calcified tissue international
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journal_title:Calcified tissue international
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journal_title:Calcified tissue international
pub_type: 杂志文章
doi:10.1007/BF02408521
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journal_title:Calcified tissue international
pub_type: 杂志文章
doi:10.1007/BF02405095
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journal_title:Calcified tissue international
pub_type: 杂志文章,评审
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journal_title:Calcified tissue international
pub_type: 杂志文章
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journal_title:Calcified tissue international
pub_type: 杂志文章,多中心研究,随机对照试验
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journal_title:Calcified tissue international
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journal_title:Calcified tissue international
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journal_title:Calcified tissue international
pub_type: 杂志文章
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journal_title:Calcified tissue international
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