生长激素治疗特发性矮小症前后骨转换指标变化的意义

被引:25
作者
王斐
朱志颖
刘庆旭
徐静
李嫔
机构
[1] 上海交通大学附属儿童医院,上海市儿童医院内分泌科
关键词
特发性矮小症; 生长激素; 骨转换指标; Ⅰ型前胶原氨基端前肽; Ⅰ型胶原交联羧基末端肽;
D O I
暂无
中图分类号
R725.8 [小儿内分泌腺疾病及代谢病];
学科分类号
100201 [内科学];
摘要
目的探讨青春前期特发性矮小症(ISS)患儿重组人生长激素(rhGH)治疗前后血清骨形成指标Ⅰ型前胶原氨基端前肽(PINP)及骨吸收指标Ⅰ型胶原交联羧基末端肽(β-CTX)水平变化及其在早期治疗随访体系中的临床意义。方法 ISS组患儿40例(男18例, 女22例), 健康对照组儿童50例, ISS组患儿予rhGH 0.15 IU/(kg·d), 每晚皮下注射, 治疗前、治疗3个月及6个月后分别采用电化学发光法测定其血清PINP、β-CTX、胰岛素样因子-1(IGF-1)及胰岛素样生长因子结合蛋白-3(IGFBP3)水平, 并记录身高、体质量、体质量指数、身高标准差积分(HtSDS)、骨龄、生长速度。结果 1.青春前期ISS组血清PINP水平[(479.51±134.61)μg/L]均低于健康对照组PINP[(651.31±212.41)μg/L], β-CTX水平[(0.84±0.33)μg/L]高于健康对照组[(0.50±0.15)μg/L], 差异均有统计学意义(t=2.276、-2.709, P均<0.05)。2.ISS男童(18例)及女童(22例)GH治疗前后血清PINP及β-CTX差异无统计学意义(P>0.05);40例ISS患儿GH治疗后3个月, 血清PINP水平[(736.15±156.59)μg/L]及β-CTX水平[(1.08±0.27)μg/L]较治疗前均有升高, 差异有统计学意义(t=4.736、2.497, P均<0.05), 其中PINP尤为显著, HtSDS(-2.95±0.43)与治疗前HtSDS(-2.69±0.58)比较差异有统计学意义(t=2.714, P<0.05);治疗6个月与3个月比较, PINP水平(860.90±254.59) μg/L及β-CTX水平(0.94±0.32) μg/L增加缓慢(t=1.366、-0.831, P均>0.05), HtSDS(-2.51±0.54)与治疗后3个月比较差异无统计学意义(t=1.609, P>0.05)。3.血清PINP与IGF-1、IGFBP3呈正相关性(r=0.636、0.673, P均<0.05), 与β-CTX无相关性(r=0.336, P>0.05), PINP、β-CTX与HtSDS呈正相关(r=0.655、0.782, P均<0.05)。结论骨转换指标PINP及β-CTX可作为早期判断ISS GH疗效的辅助指标之一。
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