Scholarlink

Background <p>The diagnosis of intrahepatic cholestasis remains challenging due to a lack of reliable noninvasive biomarkers. This study aimed to define the diagnostic utility of semi-quantitative parameters from Gd-EOB-DTPA-enhanced MRI for assessing pathological severity in a murine model of 3,5-diethoxycarbonyl-1,4-dihydrocollidine (DDC)-induced intrahepatic cholestasis.</p> Methods <p>Thirty female Kunming mice were divided into control (<i>n</i> = 5) and DDC-fed (<i>n</i> = 20) groups. Multi-timepoint (0–60&#xa0;min post-injection) Gd-EOB-DTPA-enhanced MRI at 3.0T was performed to derive kinetic parameters—maximum relative enhancement (RE<sub>max</sub>), time-to-peak (TTP), and maximum slope (Slope<sub>max</sub>)—from liver parenchyma and gallbladder. Histopathological scoring of key features (bile duct proliferation, cholestasis, hepatocyte degeneration, periductular fibrosis, porphyrin emboli) and serum biochemistry served as reference standards. Correlations and diagnostic performance were analyzed statistically.</p> Results <p>DDC feeding induced progressive cholestatic injury, evident on histology from week 2 onward. MRI revealed distinct kinetic impairments: attenuated hepatic RE<sub>max</sub> (strong inverse correlations with bile duct proliferation [<i>rs</i> = -0.661, <i>P</i> = 0.0003] and cholestasis [<i>rs</i> = -0.546, <i>P</i> = 0.005]) and suppressed gallbladder positive Slope<sub>max</sub> (inversely correlated with cholestasis severity [<i>rs</i> = -0.663, <i>P</i> = 0.0003]). Gallbladder positive Slope<sub>max</sub> demonstrated exceptional diagnostic accuracy (AUC = 0.950), outperforming hepatic parameters. Serum biomarkers (AST, ALT) were elevated but did not correlate with MRI kinetics.</p> Conclusions <p>Gd-EOB-DTPA-enhanced MRI quantitatively captures functional impairment in mice intrahepatic cholestasis. Gallbladder excretion kinetics (Slope<sub>max</sub>) and hepatic uptake (RE<sub>max</sub>) serve as sensitive, non-invasive biomarkers strongly correlated with histopathological severity, offering a promising approach for functional assessment that complements conventional serology and morphology.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Gd-EOB-DTPA-enhanced MRI in the diagnosis of intrahepatic cholestasis in mice: an experimental study

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月2日

查看全文
  • Siyu Wang,
  • Rencai Lu,
  • Mingkang Wu,
  • Qing Li,
  • Yinghong Zhang,
  • Linxiu Liu,
  • Yuqi Yang,
  • Kunhua Wu,
  • Shaobo Wang

摘要

Background

The diagnosis of intrahepatic cholestasis remains challenging due to a lack of reliable noninvasive biomarkers. This study aimed to define the diagnostic utility of semi-quantitative parameters from Gd-EOB-DTPA-enhanced MRI for assessing pathological severity in a murine model of 3,5-diethoxycarbonyl-1,4-dihydrocollidine (DDC)-induced intrahepatic cholestasis.

Methods

Thirty female Kunming mice were divided into control (n = 5) and DDC-fed (n = 20) groups. Multi-timepoint (0–60 min post-injection) Gd-EOB-DTPA-enhanced MRI at 3.0T was performed to derive kinetic parameters—maximum relative enhancement (REmax), time-to-peak (TTP), and maximum slope (Slopemax)—from liver parenchyma and gallbladder. Histopathological scoring of key features (bile duct proliferation, cholestasis, hepatocyte degeneration, periductular fibrosis, porphyrin emboli) and serum biochemistry served as reference standards. Correlations and diagnostic performance were analyzed statistically.

Results

DDC feeding induced progressive cholestatic injury, evident on histology from week 2 onward. MRI revealed distinct kinetic impairments: attenuated hepatic REmax (strong inverse correlations with bile duct proliferation [rs = -0.661, P = 0.0003] and cholestasis [rs = -0.546, P = 0.005]) and suppressed gallbladder positive Slopemax (inversely correlated with cholestasis severity [rs = -0.663, P = 0.0003]). Gallbladder positive Slopemax demonstrated exceptional diagnostic accuracy (AUC = 0.950), outperforming hepatic parameters. Serum biomarkers (AST, ALT) were elevated but did not correlate with MRI kinetics.

Conclusions

Gd-EOB-DTPA-enhanced MRI quantitatively captures functional impairment in mice intrahepatic cholestasis. Gallbladder excretion kinetics (Slopemax) and hepatic uptake (REmax) serve as sensitive, non-invasive biomarkers strongly correlated with histopathological severity, offering a promising approach for functional assessment that complements conventional serology and morphology.