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乙醇摄入致小鼠骨代谢异常的骨形态计量学观察

Effects of ethanol on bone metabolism in mice by histomorphometry
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摘要 目的:通过骨组织形态计量方法观察乙醇摄入对生长期小鼠骨代谢的影响。方法:清洁级6周龄昆明种小鼠30只,随机分成基础组(A)、正常对照组(B)、乙醇组(C)给予50%(体积分数)乙醇(根据预实验结果选用),按4 g.kg-1.d-1剂量灌胃(换算成60 kg体重成人相当于摄入乙醇约30 g/d),连续灌胃60 d后处死全部小鼠,取胫骨上段、中段进行不脱钙骨制片,再经自动图像分析系统进行骨组织形态计量学分析。结果:与正常组比较,乙醇组的小鼠形态学参数骨小梁面积百分数(%Tb.Ar)明显降低(-66%,P<0.05),骨形成率(BFR/TV)降低(-35%,P<0.05);皮质骨面积百分率(%Ct.Ar)降低(-7%,P<0.05)及髓腔面积百分率增加(%Ma.Ar+32%,P<0.05),骨内膜骨形成率E-BFR/BS降低(-41%,P<0.05)。结论:小剂量乙醇摄入可造成生长期小鼠骨代谢的降低,骨量的丢失。 Objective:To observe the effects of ethanol on bone metabolism of growing mice by bone histomorphometry. Methods: Thirty six-week-old KM mice were randomly divided into basal control ( group A), normal control ( group B), 50% (V/V) ethanol group( group C) according to the dosage of 10 ml/kg once a day for 60 days( ( equivalent 4g · kg^-1·d^-1), All mice were killed and their proximal tibia and tibial diaphysis were processed undecalcified sections and measured by automatic bone image-analysis system. Results: Compared with normal group, index of trabecular bone area (% Tb. Ar) of proximal tibial metaphysis(PTM) decreased obviously( -66%,P 〈0. 05) in ethanol group. Bone formation rate(BFR/TV) decreased (-35%, P 〈 0.05). Cortical bone : static parameter of % Ct. Ar reduced ( - 7%, P 〈 0.05) and % Ma. Ar increased( + 32%, P 〈 0.05 ), bone endosteal E-BFR/BS dropped apparently( -41%, P 〈 0.05). Condusion:Low dose of ethanol decreased bone metabolism, leading to bone loss of growing mice.
出处 《军医进修学院学报》 CAS 北大核心 2007年第4期288-290,共3页 Academic Journal of Pla Postgraduate Medical School
关键词 乙醇 形态计量学 代谢 小鼠 ethanol histomorphometry bone metabolism mice
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