Henoch-Schönlein purpura associated with Mycoplasma infection

목 적 : Henoch-Sch $\ddot{o}$ nlein 자반증(HSP)의 원인 및 발병기전이 현재까지 뚜렷히 밝혀지지는 않았으나 음식, 약물에 대한 과민성, 감염 등으로 오는 것으로 생각되며 면역글로불린 A를 포함한 면역 복합체에 의한 소혈관의 염증반응으로 보는 면역학적 기전이 중요한 역할을 하는 것으로 알려져 있다. 본 연구에서는 HSP와 마이코플라스마 감염증의 연관성을 알아보았다. 방 법 : 2002년 1월부터 2005년 12월까지 인제대학교 일산백병원 소아과에서 HSP 로 진단받은 98명의 환아들을 대상으로 임상적 특징에 대해 후향적 조사를 하였고 마이코플라스마 비연관성 HSP 환자군(A군)과 마이코플라스마 연관성 환자군(B군) 사이의 임상적 특징을 비교해 보았다. 결 과 : 1) 마이코플라스마 특이항체 검사상 양성( ${\geq}1:320$ )이거나, 혹은 추적 검사상 항체 검사치가 4배 이상 증가한 경우는 98명 중 14명(14.3%)에서 관찰되었고, 1례에서 전형적인 마이코플라스마 폐렴소견을 보인 환자에서 마이코플라스마 항체가가 1:1280이었다. 2) A군과 B군에서 남녀의 비는 1.21:1, 1.80:1, 평균 연령은 $6.7{\pm}2.5$ 세, $5.9{\pm}1.9$ 세였다. 월별 발생율은 A군에서는 11월과 12월에 각각 13명(15.5%)으로 가장 높았으며, B군에서는 11월에 3명(21.4%)으로 가장 높았다. 3) A군와 B군에서 각각 자반은 84명(100%), 14명(100%), 관절염은 57명(67.9%), 8명(57.1%), 신염은 21명(25.0%), 5명(35.7%), 복통은 57명(67.9%), 9명(64.3%)에서 보였다. 관절염은 모든 군에서 발/발목부위에서 가장 흔히 나타났다. 결 론 : 이번 연구에서 전체 HSP 환아 98명 중 14명(14.3%)에서 마이코플라스마 항체 양성이나 4배 이상의 혈청 역가의 상승을 보였으나 마이코플라스마 연관성 HSP군과 마이코플라스마 비연관성 HSP군 간의 명확한 임상적 차이는 없었다. HSP 환아에서 정상 환아들보다 마이코플라스마 항체 양성율이 높고 1례에서 마이코플라스마 폐렴과 HSP가 동반되는 등 HSP와 마이코플라스마 감염증간의 연관성이 의심되나 앞으로 HSP의 원인으로 마이코플라스마 감염증의 관련성을 밝히기 위해 향후 더 많은 전향적인 연구가 필요하겠다. 【Purpose : The cause and pathogenesis of Henoch-Sch $\ddot{o}$ nlein purpura (HSP) are unknown, but recently the hypothesis that immunoglobulin A may have an important role in the pathogenesis of HSP is being published and HSP associated with mycoplasma infection has been also reported. The aim of this study is to discover relation between HSP and mycoplsma infection. Methods : From Jan. 2002 to Dec. 2005, we retrospectively evaluated 98 children who were diagnosed as HSP at Ilsan Paik Hospital. 84 patients were not associated with mycoplasma infection (group A) and 14 patients were associated with mycoplasma infection (group B). We compared both groups about clinical features. Results : The ratio of male to female patients in group A and B were 1.21:1 and 1.80:1. The number of patients in group A was most in November and December, and in group B was most in November. All patients had non-thrombocytopenic purpura concentrated on the buttocks and lower extremities and joint involvement was most common on the feet and ankle in both groups. 57 (67.9%) cases in group A and 9 (64.3%) cases in group B complained of abdominal pain. And 21 (25.0%) cases in group A and 5 (35.7%) cases in group B had nephritis. Elevated mycoplasma antibody titer ( ${\geq}1:320$ ) or 4 fold-rise were noted in 14 of 98 patients (14.3%). In this study, there was one child with HSP preceded by typical mycoplasma pneumonia (mycoplasma antibody titer 1:1280). Conclusion : In this study, elevated mycoplasma antibody titer ( ${\geq}1:320$ ) or 4 fold-rise were noted in 14 of 98 patients and the difference of clinical features between group A and B was not specific. The role of mycoplasma infection in the etiology of HSP may have been implicated, so the association with mycoplasma infection should have to be proved by further controlled studies.】

[1]  S. Mrusek,et al.  Henoch-Schönlein purpura , 2004, The Lancet.

[2]  J. Savage,et al.  Long term renal prognosis of Henoch-Schönlein Purpura in an unselected childhood population , 1988, European Journal of Pediatrics.

[3]  K. Kaneko,et al.  Mycoplasma pneumoniae-associated Henoch-Schönlein purpura nephritis. , 1999, Pediatric nephrology.

[4]  F. Saulsbury Henoch-Schönlein purpura in children. Report of 100 patients and review of the literature. , 1999, Medicine.

[5]  S. Colon,et al.  Mycoplasma pneumoniae-associated nephritis in children , 1999, Pediatric Nephrology.

[6]  E. Holme,et al.  Complement activation in Henoch-Schönlein purpura , 1997, Pediatric Nephrology.

[7]  A. Batieha,et al.  Henoch-Schonlein purpura: clinical experience and contemplations on a streptococcal association. , 1996, Journal of tropical pediatrics.

[8]  S. Andreoli Chronic glomerulonephritis in childhood. Membranoproliferative glomerulonephritis, Henoch-Schönlein purpura nephritis, and IgA nephropathy. , 1995, Pediatric clinics of North America.

[9]  G. Hunder,et al.  The American College of Rheumatology 1990 criteria for the classification of Henoch-Schönlein purpura. , 2010, Arthritis and rheumatism.

[10]  Z. Hejazi,et al.  Henoch Schönlein purpura in Arab children. Analysis of 52 cases. , 1990, Tropical and geographical medicine.

[11]  T. Farley,et al.  Epidemiology of a cluster of Henoch-Schönlein purpura. , 1989, American journal of diseases of children.

[12]  H. Nielsen Epidemiology of Schönlein‐Henoch Purpura , 1988, Acta paediatrica Scandinavica.

[13]  N. Rosenblum,et al.  Steroid effects on the course of abdominal pain in children with Henoch-Schonlein purpura. , 1987, Pediatrics.

[14]  F. Ritter,et al.  Peripheral mononeuropathy complicating anaphylactoid purpura. , 1983, The Journal of pediatrics.

[15]  J. Balow,et al.  Henoch-Schönlein nephritis: prognostic features and the challenge of therapy. , 1983, American journal of kidney diseases : the official journal of the National Kidney Foundation.

[16]  A. Thorson,et al.  The "acute abdomen" of Henoch-Schonlein syndrome. , 1983, The Nebraska medical journal.

[17]  J. Rapola,et al.  Henoch-Schönlein nephritis: long-term prognosis of unselected patients. , 1981, Archives of disease in childhood.

[18]  M. Daha,et al.  Circulating IgA-immune complexes in Henoch-Schönlein purpura. A longitudinal study of their relationship to disease activity and vascular deposition of IgA. , 1980, The American journal of medicine.

[19]  R. Levinsky,et al.  IgA IMMUNE COMPLEXES IN HENOCH-SCHÖNLEIN PURPURA , 1979, The Lancet.

[20]  F. Steinheber,et al.  Pancreatitis--a rare complication of Schonlein-Henoch purpura. , 1978, The American journal of gastroenterology.

[21]  D. Nixon,et al.  Pneumonia due to Mycoplasma pneumoniae. , 1977, Clinical notes on respiratory diseases.

[22]  S. Wagenaar,et al.  Occurrence of vascular IgA deposits in clinically normal skin of patients with renal disease. , 1976, Kidney international.

[23]  M. Sussman,et al.  Mycoplasma-like particles in patients with anaphylactoid purpura. , 1974, Journal d'urologie et de nephrologie.

[24]  H. S. Loh,et al.  Testicular torsion in Henoch--Schonlein syndrome. , 1974, British medical journal.

[25]  E. Stiehm,et al.  Elevated serum IgA globulin in anaphylactoid purpura. , 1971, Pediatrics.

[26]  J. M. Kaplan,et al.  Facial nerve palsy with anaphylactoid purpura. , 1970, American journal of diseases of children.

[27]  A. Jácome Pulmonary hemorrhage and death complicating anaphylactoid purpura. , 1967, Southern medical journal.

[28]  R. Kronmal,et al.  Pneumonia due to Mycoplasma pneumoniae. Its incidence in the membership of a co-operative medical group. , 1966, The New England journal of medicine.