Thrombopoietin accumulation in hepatocytes induces a decrease in its serum levels in a sinusoidal obstruction syndrome model

  • Authors:
    • Hiroto Yamazaki
    • Hidehiro Tajima
    • Yasuhiko Yamamoto
    • Seiichi Munesue
    • Mitsuyoshi Okazaki
    • Yoshinao Ohbatake
    • Shinichi Nakanuma
    • Isamu Makino
    • Tomoharu Miyashita
    • Hiroyuki Takamura
    • Tetsuo Ohta
  • View Affiliations

  • Published online on: April 26, 2022     https://doi.org/10.3892/mmr.2022.12717
  • Article Number: 201
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Abstract

Sinusoidal obstruction syndrome (SOS) is a type of fatal hepatic injury, which predominantly occurs following exposure to drugs, such as oxaliplatin, or bone marrow transplantation. Extravasated platelet aggregation (EPA) plays an important role in the development of SOS in rat and mouse models. Furthermore, platelets invading the space of Disse adhere to hepatocytes and are phagocytized in patients with SOS. Aging platelets and platelets in patients with sepsis are phagocytized by hepatocytes through Ashwell‑Morell receptors, and thrombopoietin (TPO) is produced by the JAK2‑STAT3 signaling pathway. The purpose of the present study was to examine the significance of TPO as a biomarker of SOS. SOS was induced in Crl:CD1(ICR) female mice by intraperitoneal administration of monocrotaline (MCT). TPO levels were measured in the serum and liver tissue. Pathological and immunohistochemical studies of the liver were performed to analyze the expression levels of TPO. TPO mRNA expression levels were measured using reverse transcription‑quantitative PCR. In the SOS model, the platelet counts in peripheral blood samples were significantly decreased at 24 and 48 h after MCT treatment as compared with that at 0 h. In addition, a pathological change in hepatic zone 3 was observed in the SOS model group. Furthermore, the protein levels of TPO in liver tissue were significantly increased in the SOS model group compared with those in the control group, which was confirmed by immunohistochemistry. By contrast, serum TPO protein levels were significantly decreased in the SOS model group compared with those in the control group. These results indicated that EPA may induce sinusoidal endothelial fenestration in a mouse model of SOS, preventing TPO from translocating into the blood. In conclusion, serum TPO levels may be reduced in a mouse model of SOS owing to the accumulation in hepatocytes, suggesting that TPO could be a useful biomarker of SOS.
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June-2022
Volume 25 Issue 6

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Online ISSN:1791-3004

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Spandidos Publications style
Yamazaki H, Tajima H, Yamamoto Y, Munesue S, Okazaki M, Ohbatake Y, Nakanuma S, Makino I, Miyashita T, Takamura H, Takamura H, et al: Thrombopoietin accumulation in hepatocytes induces a decrease in its serum levels in a sinusoidal obstruction syndrome model. Mol Med Rep 25: 201, 2022
APA
Yamazaki, H., Tajima, H., Yamamoto, Y., Munesue, S., Okazaki, M., Ohbatake, Y. ... Ohta, T. (2022). Thrombopoietin accumulation in hepatocytes induces a decrease in its serum levels in a sinusoidal obstruction syndrome model. Molecular Medicine Reports, 25, 201. https://doi.org/10.3892/mmr.2022.12717
MLA
Yamazaki, H., Tajima, H., Yamamoto, Y., Munesue, S., Okazaki, M., Ohbatake, Y., Nakanuma, S., Makino, I., Miyashita, T., Takamura, H., Ohta, T."Thrombopoietin accumulation in hepatocytes induces a decrease in its serum levels in a sinusoidal obstruction syndrome model". Molecular Medicine Reports 25.6 (2022): 201.
Chicago
Yamazaki, H., Tajima, H., Yamamoto, Y., Munesue, S., Okazaki, M., Ohbatake, Y., Nakanuma, S., Makino, I., Miyashita, T., Takamura, H., Ohta, T."Thrombopoietin accumulation in hepatocytes induces a decrease in its serum levels in a sinusoidal obstruction syndrome model". Molecular Medicine Reports 25, no. 6 (2022): 201. https://doi.org/10.3892/mmr.2022.12717