KR101775851B1 - 결핵 특이적 항원에 대한 항체반응검사를 이용한 결핵 진단 방법 - Google Patents
결핵 특이적 항원에 대한 항체반응검사를 이용한 결핵 진단 방법 Download PDFInfo
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Abstract
Description
도 2는 감염 상태 및 TB 재발에 따른 결핵항원-특이적 IgG 반응을 나타낸 것이다. (a) 결핵환자(n=94)는, LTBI(n=26) 및 대조군(n=54)과 비교하여, 테스트한 모든 항원에 대한 IgG 반응이 유의하게 더 높았으며, 반면 LTBI 및 대조군 사이에는 IgG 반응에 유의한 차이점이 없었다. (b) 결핵 항원-특이적 IgG 반응을 재발 결핵(n=36) 및 새로 발병한 경우(n=58) 간의 비교결과이다. 재발한 경우엔 새로 발병한 경우와 비교하여 38 kDa, CFP-10, 및 LAM에 대한 IgG 반응이 유의하게 더 높게 나타났다. 38 kDa 및 LAM에 대한 IgG 반응 또한 새로 발병한 경우와 대조군 사이가 서로 달랐으며, 반면 ESAT-6 및 CFP-10은 상기 그룹 사이에 차이가 없었다. IgG 반응의 중간 레벨을 붉은색 수평바로 표시하였다(*P<0.05, **P<0.01, ***P<0.001). (c) LAM에 대한 중간 IgG 반응은 AFB-도말 검사결과 음성인 환자(AFB-ve, n=55) 보다는 양성인 환자(AFB+ve, n=36)에게서 유의하게 더 높았다. 그러나, AFB-도말 음성인 환자 모두는 테스트한 모든 항원에 대한 반응에서 대조군보다 IgG 반응이 유의하게 더 높았다.
도 3은 결핵 환자에서의 항원-특이적 IgG 반응에 대한 성별의 영향을 나타낸 것이다. 결핵균 항원 특이적 IgG 반응을 남성 결핵환자(n=64) 및 여성 결핵환자(n=30) 사이에 비교하였다. ESAT-6항원을 제외한 모든 항원에 대한 반응에서, 남성 환자에게서 IgG 반응이 유의하게 더 높게 나타났다. 반응의 중간레벨은 붉은색 수평 바로 표시하였다(*P<0.05, **P<0.01, ***P<0.001).
Claims (8)
- 객담도말 음성 환자의 검체가 활동성 결핵, 잠복성 결핵 또는 재발성 결핵인지를 진단하기 위한 정보를 제공하기 위하여,
38 kDa, 16 kDa, ESAT-6, CFP-10, 및 LAM 항원을 제공하는 단계;
상기 각 항원을 검체와 접촉하는 단계로 상기 접촉에 의해 상기 각 항원에 대하여 항원-항체 복합체가 형성되고;
상기 항원-항체 복합체를 검출하는 단계; 및
상기 검출결과 ⅰ) 상기 38 kDa, 16 kDa, ESAT-6, CFP-10 및 LAM 항원에 대한 항원-항체 복합체의 형성이 정상 대조군의 결과와 비교하여 높은 경우 상기 검체를 활동성 결핵으로,
ⅱ) 상기 38 kDa, 16 kDa, ESAT-6, CFP-10, 및 LAM 항원에 대한 항원-항체 복합체 형성이 활동성 결핵 대조군보다 낮지만, IGRA(IFN-γ release assay)에서 양성으로 판단된 경우, 상기 검체를 잠복성 결핵감염으로, 그리고
ⅲ) 상기 38 kDa, CFP-10, 및 LAM 항원에 대한 항원-항체 복합체 형성이 정상 대조군 및 신환자 대조군과 비교하여 높은 경우 상기 검체를 재발성 결핵으로 판단하는 단계를 포함하는, 결핵 항원 특이적 항체 반응을 이용한 결핵감염 여부 판단 방법.
- 제 1 항에 있어서, 상기 검체는 전혈, 혈청, 혈장, 가래, 소변, 흉수, 복수액, 뇌척수액 또는 기관지 폐포 세척액(brocho alveolar lavage)인, 방법.
- 제 1 항에 있어서, 상기 항원-항체 복합체 검출은 방사상 면역확산 (Radial Immunodiffusion), 면역전기영동 또는 역전류 전기영동을 포함하는 면역침전분석, RIA (Radioimmunoassay) 또는 ELISA (Enzyme Linked Immunosorbent Assay)로 수행되는 것인, 방법.
- 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
상기 항원-항체 복합체 검출은 검출 항체의 사용을 포함하며, 상기 검출 항체는 인간 IgG에 특이적으로 결합하며, 상기 검출 항체는 발색단; 알칼라인 포스파타제, 바이오틴, 베타-갈락토시다제 또는 퍼옥시다제를 포함하는 효소; 방사선물질; 또는 콜로이드성 금입자 또는 칼라 라텍스입자를 포함하는 칼라 입자를 포함하는 물질로 표지된 것인, 방법.
- 제 4 항에 있어서, 상기 방법은 딥스틱, ELISA 또는 측방유동분석방법으로 수행되는, 방법.
- 제 1 항 내지 제 3 항 중 어느 한 항에 따른 방법에 사용되는 키트로서,
38 kDa, 16 kDa, ESAT-6, CFP-10 및 LAM 항원이 흡착된 지지체 및 검출항체를 포함하며,
상기 검출 항체는 인간 IgG에 특이적으로 결합하고, 발색단; 알칼라인 포스파타제, 바이오틴, 베타-갈락토시다제 또는 퍼옥시다제를 포함하는 효소; 방사선물질; 또는 콜로이드성 금입자 또는 칼라 라텍스입자를 포함하는 칼라 입자를 포함하는 물질로 표지된 것인, 인비트로에서 활동성 결핵, 잠복성 결핵, 또는 재발성 결핵 감염 검출 또는 진단용 키트.
- 제 6 항에 있어서, 상기 지지체는 마이크로플레이트, 마이크로어레이, 칩, 유리, 비드 또는 입자, 또는 멤브레인인, 키트.
- 제 6 항에 있어서, 상기 키트는 딥스틱, ELISA, 또는 측방유동분석용인, 키트.
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