Volume 80, Issue 11 pp. 2015-2022
Research Article
Full Access

Functional polymorphism of the promoter region of the prostacyclin synthase gene and severity of RSV infection in hospitalized children

Koichi Hashimoto

Corresponding Author

Koichi Hashimoto

School of Medicine, Fukushima Medical University, Fukushima, Japan

Assistant Professor of Department of Pediatrics.

Department of Pediatrics, Fukushima Medical University, School of Medicine, 1st Hikarigaoka, Fukushima City, Fukushima 960-1295, Japan.===Search for more papers by this author
Kei Ishibashi

Kei Ishibashi

School of Medicine, Fukushima Medical University, Fukushima, Japan

Assistant Professor of Department of Urology.

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Tebeb Gebretsadik

Tebeb Gebretsadik

Department of Biostatics, Vanderbilt University, School of Medicine, Nashville, Tennessee

Associate in Biostatics.

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Tina V. Hartert

Tina V. Hartert

Division of Allergy, Pulmonary, and Critical Care Medicine, Institute of Medicine and Public Health, Vanderbilt University, School of Medicine, Nashville, Tennessee

Associate Professor of Medicine.

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Akihiro Yamamoto

Akihiro Yamamoto

School of Medicine, Fukushima Medical University, Fukushima, Japan

Faculty of Department of Cardiovascular Surgery.

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Tomohiro Nakayama

Tomohiro Nakayama

Department of Advanced Medical Science, Nihon University School of Medicine, Tokyo, Japan

Associate Professor of Division of Molecular Diagnostics.

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Kazutaka Ohashi

Kazutaka Ohashi

School of Medicine, Fukushima Medical University, Fukushima, Japan

Technical Assistant of Department of Microbiology.

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Hiroshi Sakata

Hiroshi Sakata

Asahikawa Kosei Hospital, Asahikawa, Japan

Director of Pediatrics.

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Yukihiko Kawasaki

Yukihiko Kawasaki

School of Medicine, Fukushima Medical University, Fukushima, Japan

Associate Professor of Department of Pediatrics.

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Masahiko Katayose

Masahiko Katayose

Sohma General Hospital, Soma, Japan

Director of Pediatrics.

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Hiroko Sakuma

Hiroko Sakuma

Hoshi General Hospital, Kohriyama, Japan

Director of Pediatrics.

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Hitoshi Suzuki

Hitoshi Suzuki

School of Medicine, Fukushima Medical University, Fukushima, Japan

Professor of Department of Pediatrics.

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Mitsuaki Hosoya

Mitsuaki Hosoya

School of Medicine, Fukushima Medical University, Fukushima, Japan

Professor of Department of Pediatrics.

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Ray Stokes Peebles Jr.

Ray Stokes Peebles Jr.

Division of Allergy, Pulmonary, and Critical Care Medicine, Institute of Medicine and Public Health, Vanderbilt University, School of Medicine, Nashville, Tennessee

Associate Professor of Medicine.

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Tatsuo Suzutani

Tatsuo Suzutani

School of Medicine, Fukushima Medical University, Fukushima, Japan

Professor of Department of Microbiology.

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First published: 23 September 2008
Citations: 7

Abstract

Prostaglandin I2 (PGI2) protects against RSV-induced illness in mice. A variable-number tandem repeat (VNTR) polymorphism has been detected in the promoter region of the PGI2 synthase (PGIS) gene. We sought to determine if PGI2 concentrations or polymorphisms of the PGIS gene correlate with severity of RSV lower respiratory tract infections (LRTI) in human infants. VNTR polymorphisms were studied in 81 previously healthy children between birth and 12 months of age who were hospitalized for LRTI due to RSV and 98 healthy adult control subjects. The severity of RSV infection was quantified using a clinical scoring system, and infant urine samples were collected during the acute illness for measurement of the urinary metabolite of PGI2. There were no significant differences in the overall distribution of alleles and genotypes between infants with RSV LRTI and the control subjects. The severity of RSV infection significantly inversely correlated with urinary PGI2 metabolite concentrations. The urinary PGI2 metabolite concentration correlated with the number of VNTR. The presence of a genotype with a low number VNTR repeats significantly correlated with the most severe RSV LRTI, and genotypes with the highest number of VNTR correlated with the least severe RSV LRTI. A functional polymorphism in the promoter region of the PGIS gene is associated with both significant differences in urinary PGI2 concentrations during RSV LRTI, and severity of RSV infection in previously healthy infants. J. Med. Virol. 80:2015–2022, 2008. © 2008 Wiley-Liss, Inc.

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