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Quantification of Vascular Remodeling and Sinusoidal Capillarization to Assess Liver Fibrosis with Photoacoustic Imaging.
Radiology
January 2025
From the Department of Radiology, The Third Affiliated Hospital of Southern Medical University (Academy of Orthopedics, Guangdong Province), Guangzhou, China (W.L., L.S., R.Z., Y.Z.); and Medical Research Center, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Zhongshan 2nd Rd, Yuexiu District, Guangzhou 510000, People's Republic of China (J.L., H.L., X.Z., F.X., T.S., K.L., L.N.).
Background Photoacoustic microscopy (PAM) can be used to detect strong absorption from endogenous and exogenous contrast material, making it promising for detailed structural and functional imaging of hepatic sinusoids, including dynamic visualization of permeability. Purpose To evaluate whether PAM-based quantitative parameters of liver function and integrity (lacunarity, blood oxygen saturation [Sao], and Evans blue [EB] permeability) are associated with histopathologic indexes of fibrosis in a mouse model. Materials and Methods Between October 2022 and July 2023, a total of 35 male C57BL/6 mice were included in this study and received intraperitoneal injection of carbon tetrachloride to establish mouse models of progressive liver fibrosis, with seven mice in each group.
View Article and Find Full Text PDFThe relationship between spontaneous cystic degeneration and pseudocapillarization in sinusoids in the liver of aged Sprague-Dawley rats.
J Toxicol Pathol
January 2025
The Institute of Environmental Toxicology, 4321 Uchimoriya-machi, Joso-shi, Ibaraki 303-0043, Japan.
Cystic degeneration (CD) in the liver is a cyst-like lesion composed of one or more pseudocysts lacking lining cells, occurring spontaneously in rats older than 12 months, with a male predilection. In this study, 32 CDs were identified in 23 out of 104 non-treated, control male Sprague-Dawley rats from two combined chronic toxicity and carcinogenicity studies with agrochemicals. They were examined histologically, histochemically, and immunohistochemically to assess the pathogenesis and pathological significance of CD, focusing on pseudocapillarization in aged rat liver.
View Article and Find Full Text PDFTargeted delivery of polymeric NO-donor micelles to hepatic stellate cells for restoration of liver function and inhibition of hepatic fibrosis.
J Control Release
January 2025
Department of Pharmaceutical Engineering, China Pharmaceutical University, Nanjing 211198, China. Electronic address:
Liver fibrosis is a prevalent liver disease associated with significant morbidity, and the activation of hepatic stellate cells (HSCs) serves as the primary causative factor driving the progression of liver fibrosis. However, capillarization of liver sinusoidal endothelial cells (LSECs) induced by hepatic fibrosis can reduce nitric oxide (NO) production and bioavailability, which consequently loses the ability to retain HSCs dormant, leading to amplified HSCs activation. Herein, an elaborate micelle (VN-M@BN) loaded with benazepril (BN) was constructed by self-assembly of polymeric NO donor, aiming for the controlled release of NO in liver fibrosis lesions thereby impeding the progression of liver fibrosis.
View Article and Find Full Text PDFImaging characteristics of hypervascular focal nodular hyperplasia-like lesions in patients with chronic alcoholic liver disease.
World J Gastroenterol
January 2025
Department of Radiology, Kindai University, Faculty of Medicine, Osakasayama 589-8511, Osaka, Japan.
Background: Focal nodular hyperplasia (FNH)-like lesions are hyperplastic formations in patients with micronodular cirrhosis and a history of alcohol abuse. Although pathologically similar to hepatocellular carcinoma (HCC) lesions, they are benign. As such, it is important to develop methods to distinguish between FNH-like lesions and HCC.
View Article and Find Full Text PDF[Mechanism of Qijia Rougan Decoction and its disassembled formulas on regulation of VEGF/SRF/c-FOS pathway and improvement of hepatic sinusoidal capillaryization in rats with hepatic fibrosis].
Zhongguo Zhong Yao Za Zhi
October 2024
Chengdu University of Traditional Chinese Medicine Chengdu 610075, China.
This study aims to reveal the mechanism of Qijia Rougan Decoction(QJRG) and its disassembled formulas in mitigating hepatic fibrosis via the vascular endothelial growth factor(VEGF)/serum response factor(SRF)/c-FOS pathway and hepatic sinusoidal capillarization. Male Sprague-Dawley(SD) rats were randomized into a control group(n=6) and a modeling group(n=28). Hepatic fibrosis was induced by subcutaneous injection of 40% carbon tetrachloride(CCl_4) in olive oil.
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