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肾移植受者早期霉酚酸暴露量估算模型研究
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          张寒娟 ,丁建强 ,韩文超 ,陈永妍 ,王高彪 ,丁 蕊 ,袁冬冬 (1. 郑州市第七人民医院药学部,郑州
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          450016;2.武警河南总队医院药学部,郑州 450052)
          中图分类号  R969      文献标志码  A      文章编号  1001-0408(2023)20-2530-05
          DOI  10.6039/j.issn.1001-0408.2023.20.15
          摘   要  目的  建立肾移植早期受者体内霉酚酸(MPA)暴露量[以 12 h 内血药浓度-时间曲线下面积(AUC0-12 h )计]的估算模型。
          方法  选择20例接受吗替麦考酚酯(MMF)+他克莫司+甲泼尼龙三联免疫抑制治疗的肾移植受者,分别于术后第15天口服吗替麦
          考酚酯分散片(750 mg,q12 h)前及服药后0.5、1.0、1.5、2.0、3.0、4.0、6.0、8.0、12.0 h采集血样,测定MPA血药浓度,计算MPA的药
          动学参数;采用多元线性逐步回归分析法,拟合估算受者人群体内 MPA-AUC0-12 h的有限采样法简化计算公式,并采用 Bland-
          Altman方法评价该公式与经典药动学方法之间的一致性。结果  20例受者MPA的给药前血药浓度(c0 )为(1.53±0.84)μg/mL,药
          峰浓度(cmax )为(12.07±5.97)μg/mL,半衰期(t1/2 )为(5.41±3.67)h,药峰时间(tmax )为(1.58±0.75)h,fAUC0-12 h (按经典药动学方法计
          算出的 AUC0-12 h )为(33.95±13.40)μg·h/mL。使用“4.0、8.0、12.0 h”三点采样估算 MPA-AUC0-12 h的简化计算公式为 AUC0-12 h=
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          12.058+2.819c4.0+7.045c8.0+3.879c12.0 (R =0.934),预测值与fAUC0-12 h有很好的相关性及一致性,95.0%的预测值在x±1.96SD(标准
          差)范围内。结论  成功建立了肾移植受者早期MPA暴露量估算模型,且该模型有较好的预测精度,并具有采样点少的优势。
          关键词  霉酚酸;暴露量;肾移植;药动学;有限采样法;预测模型

          Estimation model for the exposure of mycophenolic acid in early renal transplant recipients
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          ZHANG Hanjuan ,DING Jianqiang ,HAN Wenchao ,CHEN Yongyan ,WANG Gaobiao ,DING Rui ,YUAN
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          Dongdong(1.  Dept.  of  Pharmacy,  Zhengzhou  No.7  People’s  Hospital,  Zhengzhou  450016,  China;2.  Dept.  of
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          Pharmacy, Henan General Hospital of Armed Police, Zhengzhou 450052, China)
          ABSTRACT    OBJECTIVE  To  establish  the  estimation  model  for  the  exposure  of  mycophenolic  acid (MPA)  in  early  renal
          transplant recipients [calculated by the area under the plasma concentration-time curve with 12 h (AUC0-12 h )]. METHODS  Twenty
          kidney  transplant  recipients,  who  received  triple  immunosuppressive  therapy  of  mycophenolate  mofetil (MMF)+tacrolimus+
          methylprednisolone,  were  selected  and  given  MMF  dispersible  tablets (750  mg,  q12  h)  on  the  15th  day  after  the  operation;  the
          blood  samples  were  collected  from  the  patients  before  and  0.5,  1.0,  1.5,  2.0,  3.0,  4.0,  6.0,  8.0,  12.0  hours  after  the
          administration,  respectively.  The  blood  concentration  of  MPA  was  determined,  and  the  pharmacokinetic  parameters  of  MPA  were
          calculated. The multivariate linear stepwise regression analysis method was used to fit an estimation formula for the finite sampling
          method  suitable  for  MPA-AUC0-12 h  of  the  recipients.  Bland-Altman  analysis  was  used  to  evaluate  the  agreement  between  the
          estimation formula and the classical pharmacokinetic method. RESULTS The main pharmacokinetic parameters of MPA in 20 renal
          transplant  recipients:  c0  was (1.53±0.84)  μg/mL,  cmax  was (12.07±5.97)  μg/mL,  t1/2  was (5.41±3.67)  h,  tmax  was (1.58±0.75)
          h, and the average AUC0-12 h calculated by the classical pharmacokinetic method was (33.95±13.40) μg·h/mL. MPA-AUC0-12 h was
          estimated with sampling points of “4.0, 8.0, 12.0 h”; the simplified calculation formula was AUC0-12 h=12.058+2.819c4.0+7.045c8.0+
          3.879c12.0 (R =0.934). The predicted value had a good correlation and consistency with the measured value, and 95.0% of predicted
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          values did not exceed the x±1.96SD (standard deviation) range. CONCLUSIONS The estimation model is established successfully
          for the exposure of MPA in early renal transplant recipients; the model has better prediction accuracy and fewer sampling points.
          KEYWORDS     mycophenolic acid; exposure; renal transplantation; pharmacokinetics; limited sampling strategy; estimation model


                                                                  吗替麦考酚酯(mycophenolate mofetil,MMF)作为
              Δ 基金项目 河 南 省 医 学 科 技 攻 关 计 划 联 合 共 建 项 目(No.    新型抗代谢免疫抑制剂在器官移植中被广泛应用,其口
          LHGJ20200732)
                                                              服吸收后,可迅速水解为次级代谢产物——霉酚酸(my‐
             *第一作者 副主任药师,硕士。研究方向:器官移植受者药物代
                                                                                 [1―2]
          谢动力学。E-mail:zhanghj5605@163.com                     cophenolic acid,MPA) 。MPA 的血药浓度-时间曲线

          · 2530 ·    China Pharmacy  2023 Vol. 34  No. 20                            中国药房  2023年第34卷第20期
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