{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360023720970130304.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.34067/kid.0000000000000498"}},{"identifier":{"@type":"URI","@value":"https://journals.lww.com/10.34067/KID.0000000000000498"}},{"identifier":{"@type":"URI","@value":"https://marianna-u.repo.nii.ac.jp/records/2001052"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Gross Hematuria after the COVID-19 mRNA Vaccination: Nationwide Multicenter Prospective Cohort Study in Japan"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:sec>\n            <jats:title>Key Points</jats:title>\n            <jats:p>\n                                 <jats:list list-type=\"bullet\"><jats:list-item><jats:p>Little is known about the clinicopathological characteristics and renal outcomes in the patients with gross hematuria (GH) after the vaccination.</jats:p></jats:list-item><jats:list-item><jats:p>To fill a clinicopathological knowledge gap regarding vaccination and GH, we conducted a nationwide multicenter prospective cohort study.</jats:p></jats:list-item><jats:list-item><jats:p>GH is more likely to occur in patients with IgA nephropathy, with a female bias, but without progressive exacerbation of renal function.</jats:p></jats:list-item></jats:list>\n                              </jats:p>\n          </jats:sec>\n          <jats:sec>\n            <jats:title>Background</jats:title>\n            <jats:p>In the past 3 years, cases of gross hematuria (GH) after the vaccination for coronavirus disease 2019 in patients with IgA nephropathy (IgAN) have been frequently reported worldwide. However, the postevent renal prognosis of these patients, their clinical backgrounds, and underlying mechanisms remain unknown. Therefore, we conducted a nationwide multicenter prospective cohort study in Japan.</jats:p>\n          </jats:sec>\n          <jats:sec>\n            <jats:title>Methods</jats:title>\n            <jats:p>We analyzed laboratory findings at the time of the first presentation to the hospital and 3 and 6 months after in patients with GH after the vaccination and histopathological findings in their kidney biopsy specimens. Moreover, changes in pathological biomarkers of IgAN such as galactose-deficient IgA1 (Gd-IgA1) and its immune complexes were also evaluated.</jats:p>\n          </jats:sec>\n          <jats:sec>\n            <jats:title>Results</jats:title>\n            <jats:p>During the study period, 127 newly presenting patients with GH after the vaccination were enrolled, with a clear female bias (73.2%). GH was observed after the second or subsequent vaccinations in most patients (92.9%). Of the 37 patients undergoing kidney biopsy before the vaccination, 36 patients had been diagnosed with IgAN/IgA vasculitis (IgAV). In the remaining 90 patients, 69 of the 70 who newly underwent kidney biopsy were diagnosed with IgAN (<jats:italic toggle=\"yes\">n</jats:italic>=67)/IgAV (<jats:italic toggle=\"yes\">n</jats:italic>=2). Their histopathology did not show a high incidence of acute lesions such as endocapillary hypercellularity and crescentic lesions. Most cases showed a temporary increase in proteinuria, but no sustained worsening in renal function. Among the biomarkers measured, serum Gd-IgA1 and immune complexes were comparable throughout the observation period; however, only urinary Gd-IgA1 was increased at the time of GH.</jats:p>\n          </jats:sec>\n          <jats:sec>\n            <jats:title>Conclusions</jats:title>\n            <jats:p>We found that GH after the vaccination is more likely to occur in patients with IgAN/IgAV, with a female bias, but without progressive exacerbation of renal function. Although further investigation is needed regarding causal relationship between vaccination and GH, this study provides many insights into the molecular mechanisms of GH.</jats:p>\n          </jats:sec>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1070870839834904333","@type":"Researcher","foaf:name":[{"@value":"Ryousuke Aoki"}],"jpcoar:affiliationName":[{"@value":"Department of Nephrology, Juntendo University Faculty of Medicine, Tokyo, Japan"},{"@value":"Joint Research Team from the Japanese Society of Nephrology and the Progressive Renal Diseases Research, Research on Intractable Disease, from the Ministry of Health, Labour and Welfare of Japan, Special Study Group for IgA Nephropathy, Tokyo, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1070870839834904337","@type":"Researcher","foaf:name":[{"@value":"Yoshihito Nihei"}],"jpcoar:affiliationName":[{"@value":"Department of Nephrology, Juntendo University Faculty of Medicine, Tokyo, Japan"},{"@value":"Joint Research Team from the Japanese Society of Nephrology and the Progressive Renal Diseases Research, Research on Intractable Disease, from the Ministry of Health, Labour and Welfare of Japan, Special Study Group for IgA Nephropathy, Tokyo, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1070870839834904326","@type":"Researcher","foaf:name":[{"@value":"Keiichi Matsuzaki"}],"jpcoar:affiliationName":[{"@value":"Joint Research Team from the Japanese Society of Nephrology and the Progressive Renal Diseases Research, Research on Intractable Disease, from the Ministry of Health, Labour and Welfare of Japan, Special Study Group for IgA Nephropathy, Tokyo, Japan"},{"@value":"Department of Public Health, Kitasato University School of Medicine, Kanagawa, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1070870839834904327","@type":"Researcher","foaf:name":[{"@value":"Hitoshi Suzuki"}],"jpcoar:affiliationName":[{"@value":"Joint Research Team from the Japanese Society of Nephrology and the Progressive Renal Diseases Research, Research on Intractable Disease, from the Ministry of Health, Labour and Welfare of Japan, Special Study Group for IgA Nephropathy, Tokyo, Japan"},{"@value":"Department of Nephrology, Juntendo University Urayasu Hospital, Chiba, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1070870839834904321","@type":"Researcher","foaf:name":[{"@value":"Masao Kihara"}],"jpcoar:affiliationName":[{"@value":"Department of Nephrology, Juntendo University Faculty of Medicine, Tokyo, Japan"},{"@value":"Joint Research Team from the Japanese Society of Nephrology and the Progressive Renal Diseases Research, Research on Intractable Disease, from the Ministry of Health, Labour and Welfare of Japan, Special Study Group for IgA Nephropathy, Tokyo, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1070870839834904331","@type":"Researcher","foaf:name":[{"@value":"Asa Ogawa"}],"jpcoar:affiliationName":[{"@value":"Division of Nephrology, Niigata Prefectural Shibata Hospital, Niigata, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1070870839834904328","@type":"Researcher","foaf:name":[{"@value":"Tomoya Nishino"}],"jpcoar:affiliationName":[{"@value":"Joint Research Team from the Japanese Society of Nephrology and the Progressive Renal Diseases Research, Research on Intractable Disease, from the Ministry of Health, Labour and Welfare of Japan, Special Study Group for IgA Nephropathy, Tokyo, Japan"},{"@value":"Department of Nephrology, Nagasaki University Hospital, Nagasaki, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1070870839834904334","@type":"Researcher","foaf:name":[{"@value":"Satoru Sanada"}],"jpcoar:affiliationName":[{"@value":"Department of Nephrology, Japan Community Healthcare Organization Sendai Hospital, Sendai, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1070870839834904336","@type":"Researcher","foaf:name":[{"@value":"Shinya Yokote"}],"jpcoar:affiliationName":[{"@value":"Division of Nephrology and Hypertension, Department of Internal Medicine, Jikei University Katsushika Medical Center, Tokyo, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1070870839834904320","@type":"Researcher","foaf:name":[{"@value":"Masahiro Okabe"}],"jpcoar:affiliationName":[{"@value":"Division of Nephrology and Hypertension, Department of Internal Medicine, Jikei University Daisan Hospital, Tokyo, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1070870839834904332","@type":"Researcher","foaf:name":[{"@value":"Sayuri Shirai"}],"jpcoar:affiliationName":[{"@value":"Joint Research Team from the Japanese Society of Nephrology and the Progressive Renal Diseases Research, Research on Intractable Disease, from the Ministry of Health, Labour and Welfare of Japan, Special Study Group for IgA Nephropathy, Tokyo, Japan"},{"@value":"Division of Nephrology and Hypertension, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1070870839834904322","@type":"Researcher","foaf:name":[{"@value":"Akihiro Fukuda"}],"jpcoar:affiliationName":[{"@value":"Joint Research Team from the Japanese Society of Nephrology and the Progressive Renal Diseases Research, Research on Intractable Disease, from the Ministry of Health, Labour and Welfare of Japan, Special Study Group for IgA Nephropathy, Tokyo, Japan"},{"@value":"Department of Endocrinology, Metabolism, Rheumatology and Nephrology, Faculty of Medicine, Oita University, Yufu, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1070870839834904324","@type":"Researcher","foaf:name":[{"@value":"Junichi Hoshino"}],"jpcoar:affiliationName":[{"@value":"Department of Nephrology, Tokyo Women's Medical University, Tokyo, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1070870839834904335","@type":"Researcher","foaf:name":[{"@value":"Daisuke Kondo"}],"jpcoar:affiliationName":[{"@value":"Department of Nephrology, Niigata City General Hospital, Niigata, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1070870839834904330","@type":"Researcher","foaf:name":[{"@value":"Takashi Yokoo"}],"jpcoar:affiliationName":[{"@value":"Joint Research Team from the Japanese Society of Nephrology and the Progressive Renal Diseases Research, Research on Intractable Disease, from the Ministry of Health, Labour and Welfare of Japan, Special Study Group for IgA Nephropathy, Tokyo, Japan"},{"@value":"Division of Kidney and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1070870839834904325","@type":"Researcher","foaf:name":[{"@value":"Naoki Kashihara"}],"jpcoar:affiliationName":[{"@value":"Joint Research Team from the Japanese Society of Nephrology and the Progressive Renal Diseases Research, Research on Intractable Disease, from the Ministry of Health, Labour and Welfare of Japan, Special Study Group for IgA Nephropathy, Tokyo, Japan"},{"@value":"Department of Nephrology and 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