Volume 49, Issue 1 pp. 33-41
Original Article

Non-invasive liver fibrosis assessment correlates with collagen and elastic fiber quantity in patients with hepatitis C virus infection

Yutaka Yasui

Yutaka Yasui

Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan

These authors contributed equally to this study.Search for more papers by this author
Tokiya Abe

Tokiya Abe

Department of Pathology, School of Medicine, Keio University, Tokyo, Japan

These authors contributed equally to this study.Search for more papers by this author
Masayuki Kurosaki

Masayuki Kurosaki

Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan

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Kotaro Matsunaga

Kotaro Matsunaga

Department of Pathology, Musashino Red Cross Hospital, Tokyo, Japan

Department of Internal Medicine, Division of Gastroenterology and Hepatology, School of Medicine, Saint Marianna University, Kawasaki, Japan

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Mayu Higuchi

Mayu Higuchi

Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan

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Nobuharu Tamaki

Nobuharu Tamaki

Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan

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Keiya Watakabe

Keiya Watakabe

Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan

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Mao Okada

Mao Okada

Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan

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Wan Wang

Wan Wang

Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan

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Takao Shimizu

Takao Shimizu

Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan

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Kenta Takaura

Kenta Takaura

Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan

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Yohei Masugi

Yohei Masugi

Department of Pathology, School of Medicine, Keio University, Tokyo, Japan

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Hiroyuki Nakanishi

Hiroyuki Nakanishi

Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan

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Kaoru Tsuchiya

Kaoru Tsuchiya

Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan

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Yuka Takahashi

Yuka Takahashi

Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan

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Jun Itakura

Jun Itakura

Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan

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Urara Sakurai

Urara Sakurai

Department of Pathology, Musashino Red Cross Hospital, Tokyo, Japan

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Akinori Hashiguchi

Akinori Hashiguchi

Department of Pathology, School of Medicine, Keio University, Tokyo, Japan

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Michiie Sakamoto

Corresponding Author

Michiie Sakamoto

Department of Pathology, School of Medicine, Keio University, Tokyo, Japan

Correspondence: Professor Namiki Izumi, Department of Gastroenterology and Hepatology Musashino Red Cross Hospital 1-26-1 Kyonan-cho, Musashino-shi, Tokyo 180-8610, Japan. Email: [email protected]

Professor Michiie Sakamoto, Department of Pathology, School of Medicine, Keio University, Tokyo, Japan. Email: [email protected]

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Namiki Izumi

Corresponding Author

Namiki Izumi

Department of Gastroenterology and Hepatology, Musashino Red Cross Hospital, Tokyo, Japan

Correspondence: Professor Namiki Izumi, Department of Gastroenterology and Hepatology Musashino Red Cross Hospital 1-26-1 Kyonan-cho, Musashino-shi, Tokyo 180-8610, Japan. Email: [email protected]

Professor Michiie Sakamoto, Department of Pathology, School of Medicine, Keio University, Tokyo, Japan. Email: [email protected]

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First published: 12 November 2018
Citations: 22
Conflict of interest: The authors have no conflict of interest.
Financial support: This study was funded by a Grant-in-Aid from the Japan Agency for Medical Research and Development (grant no. 15fk0210007h0002).

Abstract

Aim

Elastic fiber deposition is a cause of irreversibility of liver fibrosis. However, to date, its relevance to clinical features has not yet been clarified. This study aimed to clarify the correlation between non-invasive markers of fibrosis and fiber quantity, including elastic fiber, obtained from computational analysis.

Methods

This retrospective study included 270 patients evaluated by non-invasive liver fibrosis assessment prior to liver biopsy. Of these patients, 95 underwent magnetic resonance elastography (MRE) and 244 were assessed with Wisteria floribunda agglutinin-positive Mac-2 binding protein (WFA+-M2BP). Using whole-slide imaging of Elastica van Gieson-stained liver biopsy sections, the quantity of collagen, elastin, and total fiber (elastin + collagen) was determined.

Results

The total fiber quantity showed significant linear correlation with fibrosis stage F0–F4. Collagen fiber quantity increased from stage F0 to F4, whereas elastic fiber quantity increased significantly only from stage F2 to F3. Spearman's rank correlation test revealed that non-invasive liver fibrosis assessment significantly correlates with each fiber quantity, including correlation between total fiber quantity and the Fibrosis-4 (FIB-4) index (r = 0.361, P < 0.001), WFA+-M2BP values (r = 0.404, P < 0.001), and liver stiffness value by MRE (r = 0.615, P < 0.001). Receiver operating characteristic (ROC) curve analyses revealed that the area under ROC for predicting higher elastic fiber (>3.6%) is 0.731 by FIB-4 index, 0.716 by WFA+-M2BP, and 0.822 by liver stiffness by MRE.

Conclusion

Liver fibrosis correlates with fiber quantity through non-invasive assessment regardless of fiber type, including elastic fiber. Moreover, MRE is useful for predicting high amounts of elastic fiber.

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