Early tonsillectomy for severe immunoglobulin A nephropathy significantly reduces proteinuria.


Journal

Pediatrics international : official journal of the Japan Pediatric Society
ISSN: 1442-200X
Titre abrégé: Pediatr Int
Pays: Australia
ID NLM: 100886002

Informations de publication

Date de publication:
Sep 2020
Historique:
received: 30 01 2020
revised: 14 03 2020
accepted: 15 04 2020
pubmed: 22 4 2020
medline: 19 5 2021
entrez: 22 4 2020
Statut: ppublish

Résumé

Early multiple-drug therapy for severe childhood immunoglobulin A (IgA) nephropathy prevents the progression of nephritis and improves the long-term prognosis. Recent studies have focused on the relationship between the pathophysiology of IgA nephropathy and tonsillar focal infection, and the efficacy of tonsillectomy with methylprednisolone pulse therapy in children has been demonstrated. However, no study has reported on the relationship between the period from diagnosis to tonsillectomy and the long-term prognosis of IgA nephropathy. To clarify the long-term effects of an early tonsillectomy, 40 patients who were diagnosed with severe IgA nephropathy in childhood and underwent a tonsillectomy were divided into two groups based on the period from diagnosis to undergoing tonsillectomy: Group A, less than 3 years; and Group B, more than 3 years. The primary endpoint of this study was the change in the amount of proteinuria. Renal prognosis was evaluated 10 years after the diagnosis. This study enrolled 40 patients diagnosed with severe IgA nephropathy in childhood who underwent tonsillectomy after multiple-drug therapy with/without methylprednisolone pulse therapy at Kindai University Hospital; eight patients were excluded based on the exclusion criteria. Group A consisted of 18 patients and Group B, 14 patients. Proteinuria and hematuria levels were significantly reduced in the early surgery group (P < 0.01). No significant differences were found in serum creatinine, uric acid, and IgA/C3 ratio. High proteinuria levels worsen the renal prognosis in IgA nephropathy. Tonsillectomy in less than 3 years combined with multiple-drug therapy after the initial diagnosis could improve long-term prognosis.

Sections du résumé

BACKGROUND BACKGROUND
Early multiple-drug therapy for severe childhood immunoglobulin A (IgA) nephropathy prevents the progression of nephritis and improves the long-term prognosis. Recent studies have focused on the relationship between the pathophysiology of IgA nephropathy and tonsillar focal infection, and the efficacy of tonsillectomy with methylprednisolone pulse therapy in children has been demonstrated. However, no study has reported on the relationship between the period from diagnosis to tonsillectomy and the long-term prognosis of IgA nephropathy.
METHODS METHODS
To clarify the long-term effects of an early tonsillectomy, 40 patients who were diagnosed with severe IgA nephropathy in childhood and underwent a tonsillectomy were divided into two groups based on the period from diagnosis to undergoing tonsillectomy: Group A, less than 3 years; and Group B, more than 3 years. The primary endpoint of this study was the change in the amount of proteinuria. Renal prognosis was evaluated 10 years after the diagnosis.
RESULTS RESULTS
This study enrolled 40 patients diagnosed with severe IgA nephropathy in childhood who underwent tonsillectomy after multiple-drug therapy with/without methylprednisolone pulse therapy at Kindai University Hospital; eight patients were excluded based on the exclusion criteria. Group A consisted of 18 patients and Group B, 14 patients. Proteinuria and hematuria levels were significantly reduced in the early surgery group (P < 0.01). No significant differences were found in serum creatinine, uric acid, and IgA/C3 ratio.
CONCLUSIONS CONCLUSIONS
High proteinuria levels worsen the renal prognosis in IgA nephropathy. Tonsillectomy in less than 3 years combined with multiple-drug therapy after the initial diagnosis could improve long-term prognosis.

Identifiants

pubmed: 32315477
doi: 10.1111/ped.14264
doi:

Substances chimiques

Glucocorticoids 0
Uric Acid 268B43MJ25
Creatinine AYI8EX34EU
Methylprednisolone X4W7ZR7023

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

1054-1057

Informations de copyright

© 2020 Japan Pediatric Society.

Références

Nozawa H, Takahara M, Yoshizaki T et al. Selective expansion of T cell receptor (TCR) V beta 6 in tonsillar and peripheral blood T cells and its induction by in vitro stimulation with Haemophilus parainfluenzae in patients with IgA nephropathy. Clin. Exp. Immunol. 2008; 151: 25-33.
Goto T, Bandoh N, Yoshizaki T et al. Increase in B-cell-activation factor (BAFF) and IFN-gamma productions by tonsillar mononuclear cells stimulated with deoxycytidyl-deoxyguanosine oligodeoxynucleotides (CpG-ODN) in patients with IgA nephropathy. Clin. Immunol. 2008; 126: 260-9.
Zhai YL, Zhu L, Shi SF et al. Increased APRIL expression induces IgA1 aberrant glycosylation in IgA Nephropathy. Medicine (Baltimore) 2016; 95: 1-7.
Hotta O, Miyazaki M, Furuta T et al. Tonsillectomy and steroid pulse therapy significantly impact on clinical remission in patients with IgA nephropathy. Am. J. Kidney Dis. 2001; 38: 736-43.
Kawasaki Y, Suyama K, Abe Y et al. Tonsillectomy with methylprednisolone pulse therapy as rescue treatment for steroid-resistant IgA nephropathy in children. Tohoku J. Exp. Med. 2009; 218: 11-6.
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Edstrom Halling S, Soderberg MP, Berg UB. Predictors of outcome in paediatric IgA nephrology with regard to clinical and histopathological variables (Oxford classification). Nephrol. Dial. Transplant. 2012; 27: 715-22.
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Yan Y, Song Y, Liu Y et al. Short- and long-term impacts of adenoidectomy with/without tonsillectomy on immune function of young children <3 years of age: A cohort study. Medicine (Baltimore) 2019; 98: e15530.

Auteurs

Takuji Enya (T)

Department of Pediatrics, Kindai University faculty of Medicine, Osaka-Sayama, Japan.

Kohei Miyazaki (K)

Department of Pediatrics, Kindai University faculty of Medicine, Osaka-Sayama, Japan.

Tomoki Miyazawa (T)

Department of Pediatrics, Kindai University faculty of Medicine, Osaka-Sayama, Japan.

Rina Oshima (R)

Department of Pediatrics, Kindai University faculty of Medicine, Osaka-Sayama, Japan.

Yuichi Morimoto (Y)

Department of Pediatrics, Kindai University faculty of Medicine, Osaka-Sayama, Japan.

Mitsuru Okada (M)

Department of Pediatrics, Kindai University faculty of Medicine, Osaka-Sayama, Japan.

Tsukasa Takemura (T)

Department of Pediatrics, Kushimoto Municipality Faculty Hospital, Wakayama, Japan.

Keisuke Sugimoto (K)

Department of Pediatrics, Kindai University faculty of Medicine, Osaka-Sayama, Japan.

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