Volume 29, Issue 4 pp. 577-587
ORIGINAL ARTICLE

Cell-free concentrated ascites reinfusion therapy enables removal of extracellular vesicles and circulating immune complexes in ascites

Yu Yamaji

Yu Yamaji

Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan

Search for more papers by this author
Goh Murayama

Corresponding Author

Goh Murayama

Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan

Correspondence

Goh Murayama, Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine Graduate School of Medicine, 1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan.

Email: [email protected]

Search for more papers by this author
Moeko Inoue

Moeko Inoue

Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan

Search for more papers by this author
Takuya Urita

Takuya Urita

Clinical Engineering Department, Juntendo University Hospital, Tokyo, Japan

Search for more papers by this author
Takashi Hirayama

Takashi Hirayama

Department of Obstetrics and Gynecology, Faculty of Medicine, Juntendo University School of Medicine, Tokyo, Japan

Search for more papers by this author
Akira Uchiyama

Akira Uchiyama

Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan

Search for more papers by this author
Masaki Nojima

Masaki Nojima

Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan

Search for more papers by this author
Yukitomo Hagiwara

Yukitomo Hagiwara

Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan

Search for more papers by this author
Takumi Saito

Takumi Saito

Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan

Search for more papers by this author
Taiga Kuga

Taiga Kuga

Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan

Search for more papers by this author
Tomoko Miyashita

Tomoko Miyashita

Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan

Search for more papers by this author
Makio Kusaoi

Makio Kusaoi

Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan

Search for more papers by this author
Yasuhisa Terao

Yasuhisa Terao

Department of Obstetrics and Gynecology, Faculty of Medicine, Juntendo University School of Medicine, Tokyo, Japan

Search for more papers by this author
Atsuo Itakura

Atsuo Itakura

Department of Obstetrics and Gynecology, Faculty of Medicine, Juntendo University School of Medicine, Tokyo, Japan

Search for more papers by this author
Kenichi Ikejima

Kenichi Ikejima

Department of Gastroenterology, Juntendo University School of Medicine, Tokyo, Japan

Search for more papers by this author
Naoto Tamura

Naoto Tamura

Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan

Search for more papers by this author
Ken Yamaji

Ken Yamaji

Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan

Search for more papers by this author
First published: 15 April 2025

Abstract

Introduction

Cell-free and concentrated ascites reinfusion therapy (CART) is used for ascites in decompensated cirrhosis and malignant tumors. We investigated extracellular vesicles (EVs) and circulating immune complexes (CICs) as potential inflammatory inducers in ascites and verified whether they can be removed through CART treatment.

Methods

Ascites from 10 patients, including those with cancer, undergoing CART were analyzed. We compared the inflammatory inducers in untreated ascites, ascites processed using AHF-MO (conventional CART filter), and those filtered with EC20W (double-filtration plasmapheresis filter). A cell-based reporter assay measured biological activity.

Results

AHF-MO significantly lowered EV and CIC levels along with physiological activity in the treated ascites. EC20W was superior in terms of EV removal but showed no significant difference from AHF-MO in CIC removal. AHF-MO showed a greater reduction in physiological activity.

Conclusion

The CART process with AHF-MO effectively removes EVs and CICs, reducing physiological activity and demonstrating its safety in ascites treatment.

CONFLICT OF INTEREST STATEMENT

The authors declare no competing interests.

DATA AVAILABILITY STATEMENT

All data necessary to evaluate the conclusions of this study are provided. Additional data or methods related to this study can be obtained by contacting the authors if required.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.