• Journal of Yeungnam Medical Science
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• 제30권1호
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• pp.21-24
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• 2013

Hemolytic disease in a newborn that causes early jaundice is common. It is often due to the Rh (D) and ABO incompatibility, but rarely due to unexpected antibodies. Among these unexpected antibodies, the anti-$Di^a$Dia antibody rarely occurs. The anti-$Di^a$ antibody was observed in the serum and red-cell eluate of an infant, and in the serum of his mother. The frequency of the appearance of the $Di^a$ antigen in the Korean population is estimated to be 6.4-14.5%. This paper reports a case of hemolytic disease in a newborn associated with the anti-$Di^a$ antibody. A full-term male infant was transferred to the authors' hospital due to hyperbilirubinemia the day after his birth. The laboratory data indicated a hemoglobin value of 11.6 g/dL, a reticulocyte count of 10.6%, a total bilirubin count of 14.4 mg/dL, a direct bilirubin count of 0.6 mg/dL, and a positive result in the direct Coombs' test. Due to the identification of an irregular antibody from the maternal serum, an anti-$Di^a$ antibody was detected, which was also found in the eluate made from the infant's blood. The infant had been treated with phototherapy and intravenous immunoglobulin since the second day after his birth and was discharged due to an improved condition without exchange transfusion. Therefore, in cases of iso-immune hemolytic disease in a newborn within 24 hours from birth who had a negative result in an antibody screening test, the conduct of an anti-$Di^a$ antibody identification test is recommended due to the suspicion of an anti-$Di^a$ antigen, followed by early administration of intravenous immunoglobulin.

• 대한임상검사과학회지
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• 제45권4호
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• pp.164-169
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• 2013

Red cell alloantibodies other than naturally occurring anti-A or anti-B are called unexpected red cell antibodies, and can be detected by performing an antibody screening. The frequency and distribution of unexpected antibody identified in Asan Medical Center were analyzed. We investigated a total of 135,238 cases of antibody screening test in AMC for 3 years from 2010 to 2012. Using column agglutination techniques, antibody identification tests were performed for the cases with positive antibody screening. Among 135,238 cases, 854 (0.6%) cases showed positive results of antibody screening test. In the order of frequency, 284 (33.3%) anti-Rh, 89 (10.4%) anti-MNS, 62 (7.3%) anti-Lewis, 34 (4.0%) anti-Kidd, 10 (1.2%) anti-Duffy, and 9 (1.1%) anti-P were identified. Multiple antibodies were detected in 199 (23.3%) cases. Among 381 subjects investigated for transfusion history, 299 (78.5%) had history of transfusion while 82 (21.5%) had unknown history. Thus the incidence of unexpected antibody was higher in the group with history of transfusion than the group without (p<0.001). Also, among 435 subjects investigated for the history of pregnancy, 46 (10.6%) had no history while 389 (89.4%) had history of pregnancy, showing higher incidence of unexpected antibody in the group with history of pregnancy than the group without pregnancy (p<0.001). Evaluated amounts and frequency of antigen exposure due to transfusion and pregnancy is suggested to increase the frequency of identification of unexpected antibody.

• 한국환경과학회지
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• 제8권2호
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• pp.165-169
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• 1999

The incidence of aseptic meningitis infection is ensuing and threatening the health of children. Enteroviruses are the major agents of aseptic meningitis and identification of virus has been a clue to diagnosis and epidemiology. The outbreak of aseptic meningitis occurred in Pusan, 1998. Patients were concentrated from April through November. Children were more susceptible than adults. Among 306 cases of specimens from stool, throat swab tested, only 7.2% were positive on virus isolation, 12 cases from stool and 10 from throat, respectively. All isolated 7 serotypes of viruses represented cytopathic effect on cultured cells. Three types of echovirus 6.25, 30 and coxsackievirus B2, B3, B4, B6 were identified by neutralizing antibody test. Isolated coxsackievirus and echovirus were observed by an electron microscope with negative staining.

• 대한임상검사과학회지
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• 제48권1호
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• pp.36-40
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• 2016

적혈구 동종면역은 수혈자와 공여자간의 적혈구 항원의 차이이다. 수혈을 위해서는 혈구형과 혈청형이 일치하지 않으면 적혈구 항체 선별 검사가 필요하며 불일치의 원인을 해명하는 것이 필수적이다. 적혈구 항체 선별검사는 임상적으로 유의한 항체를 검출하고, 신속 정확하며, 신뢰할 수 있는 방법으로 수혈에 앞서 우선적으로 하는 것을 권장한다. 본 연구자들은 다빈도로 검출된 E, D, M, E+c, C+e 항체에 대한 선별검사를 보고하였다. 따라서 이러한 결과로 항-D, 항-E의 항체가 신생아 용혈성 질환, 지연형 용혈성 수혈부작용 반응의 위험요인으로 인식하고자 한다. 또한 혈액안전관리를 적용하기 위해 적합한 항체선별검사가 요구되고, 수혈 위험요인의 선별에 있어 더 나은 효율성을 제공할 것이며 향후에 각 국가에 따라 실질적인 검출빈도를 찾는 연구가 필요할 것으로 사료된다.

• 한국축산식품학회지
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• 제34권6호
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• pp.822-828
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• 2014

In this study, the existence of skeletal muscle troponin I (smTnI), well-known as a muscle protein in fat tissues, and the utilization of smTnI as a biomarker for the identification of fat adulteration were investigated. A commercial antibody (ab97427) specific to all of animals smTnI was used in this study. Fat and meat samples (cooked and non-cooked) of pork and beef, and chicken considered as representative meats were well minced and extracted by heating and non-heating methods, and the extracts from fat and meat tissues were probed by the antibody used in both enzyme-linked immunosorbent assay (ELISA) and immunoblot. The antibody exhibited a strong reaction to all meat and fat extracts in ELISA test. On the other hand, the results of immunoblot analsis revealed a 23 kDa high intensity band corresponding to the molecular weight of smTnI (23786 Da). These results demonstrate that the existence of smTnI in all animal fat tissues. Since there are monoclonal antibodies specific to each species smTnI, smTnI in fat tissues could be used as a biomarker to identify or determine animal species adulterated in meat products. Therefore, an analytical method to identify fraudulent fat adulteration can be developed with an antibody specific to each species smTnI.

• 한국가축번식학회지
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• 제14권2호
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• pp.107-114
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• 1990

These experiments were undertaken as a basic study to develop immunocontraceptive vaccine and to understand the role of zona pellucidae in early fertilization process by identifying the monoclonal and polyclonal antibody to porcine zona pellucidae and polyclonal antibody to mouse zona pellucidae by indirect ELISA and indirect immunofluorescence test. The results obtained in these experiments were summarized as follows : 1. The titer of the antibodies to zona was determined by indirect ELISA using solubilized porcine zona coated plates. Both monoclonal and rabbit polyclonal antibodies showed very high titers ; O.D at 1 : 12,800 dilution of antibodies was still significantly higher than that of non-immunized control serum. Rabbit anti-mouse zona pellucidae sera also reacted with porcine zona pellucidae. 2. By indirect immunofluorescence test strong fluorescences were observed on the egg treated with homologous and heterologous rabbit polyclonal antibodies and FITC lablled 2nd antibodies and found to crossreact strongly with the eggs from the pig and mouse. While weaken fluorescences were observed on the eggs treated with monoclonal antibodies.

• 한국동물위생학회지
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• 제23권1호
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• pp.93-102
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• 2000

In this experiment, we studied the sero-positive rate of akabane virus in cattle from Jeju-do and analyzed the seroepidemiological features. In an analysis of 1,051 samples, the positive rate for neutralizing antibody in sera collected in nine regions on Jeju-do was 56.7%. The rate varied with the region. The positive rate was 69.6% in Aewol, 63.1% in Jeju city, 54.4% in Anduck, 51.0% in Hallim, 69.8% in Jocheun, 47.6% in Pyosun, 40% in Daejeong, 30.0% in Harkyung, 71.6% in Namwon, 24.5% in Sungsan, 133.,3% in Seokypo and 44.5% in Gujwa, respectively The rate also depended on the age of the cattle. The positive rate was 67.2% in calves 0- to 12-month old, 48.3% in cattle 13- to 24-month old, 65.4% in cattle 25- to 36-month old, and 65.4% in cattle more than ,B7 months old. To isolate the virus from calves with malformations including arthrogryposis and hydranencephaly, cerebral homogenates were inoculated into Vero cells, which were determined for cytopathic effect (CPE). Vero cells with CPE were examined for Akabane virus using an electron microscope (EM) and indirect immunofluorescent antibody test (EM). Typical virus particles with a width of 90-130nm and specific immunofluorescence in the cytoplasm of infected cells were sought for identification.

• Laboratory Medicine Online
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• 제1권1호
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• pp.64-66
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• 2011

항-Sd^a는 용혈성 수혈 부작용 발생이 적은 항체이므로, 항체 선별검사에서 의심이 되어도, 항체 동정이 보통은 생략된다. 저자들은 73세 남자 환자에서 수혈 전 비예기 항체 검사에서 혼합시야 반응을 보이면서 항체 동정검사에서 확인되지 않는 항체를 확인하였다. 항-Sd^a 의심하에 추가적인 소변 중화반응으로 동정하였다. 비록 항-Sd^a는 임상적 중요성이 떨어지지만, 고빈도 항원에 대한 항체이기 때문에 교차시험 검사에서 문제가 발생할 수 있다. 항-Sd^a로 추정되는 경우에는 소변으로 중화된 혈청으로 검사하는 것이 부적합 교차시험에 대한 해결책이 될 수 있다.

• 대한임상검사과학회지
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• 제42권2호
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• pp.63-70
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• 2010

Antibody screening and identification tests before blood transfusion are important because unexpected red antibodies can cause acute or delayed hemolytic transfusion reactions. Although a tube method was used for detecting unexpected antibodies, a column agglutination method has recently been used because of its simple procedure and a high detection of warm antibodies. This study investigated the frequency and distribution of unexpected antibodies in transfusion candidates during the recent 5 years, and transfusion characteristics in the identified cases. From January 2005 to December 2009, 46,923 sera of the cases from E hospital were screened and 98 sera were identified by the DiaMed-ID System. 272 cases (0.58%) showed positive results out of all 46,923 cases that underwent unexpected antibodies screening. Among them, unexpected antibodies were identified in 98 cases. The anti-Rh antibodies included in warm antibodies were the most frequently detected in 47 cases (47.96%). Anti-Lewis and anti-MNSs antibodies were detected in 11 cases (11.22%) and 6 cases (6.12%), respectively. Unidentified antibodies were detected in 6 cases (6.12%). Among the patients with unexpected antibodies, 43 cases (43.88%) had a history of previous transfusion. Anti-E was the most frequently detected antibody (4/14 cases, 30.77%) in the cases who had a previous history of transfusion and showed different screening results from negative to positive, This study may provide the basic data for the frequency and characteristics of red cell antibodies.

• 대한임상검사과학회지
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• 제49권4호
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• pp.390-394
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• 2017

비예기항체(unexpected antibody)는 ABO 혈액형 항체와는 달리 존재 여부를 미리 예측할 수 없는 항체로 주로 임신이나 수혈 등에 의해 다른 적혈구 항원에 노출됨으로써 발생하는 면역항체로서, 비예기항체는 해당 항원을 가진 수혈된 적혈구를 파괴하여 급성 및 지연성 용혈성부작용이나 신생아용혈성질환 등의 수혈부작용을 유발할 수 있다. 2014년 1월부터 2016년 12월까지 3년간 제주특별자치도 종합병원에 비예기항체 선별검사가 의뢰된 10,360명의 혈청 검체를 대상으로 하였으며, 의뢰된 비예기항체 선별결과 양성 결과를 보인 87 검체를 대상으로 조사하였다. 비예기항체가 선별되었던 87건 중 비예기항체 동정검사를 수탁검사기관으로 의뢰한 41 검체(0.40%) 대상으로 분석한 결과 비특이항체가 8건(19.51%), 자가항체가 3건(7.32%)이었다. 이들을 제외하고 항체가 동정된 것은 anti-E가 8건(19.51%), anti-E, anti-c 복합항체가 6건(14.63%), $anti-Le^a$, $anti-Le^b$ 복합항체가 3건(7.32%), $anti-Le^a$와 $anti-Le^b$가 각각 2건(4.88%)으로 조사되었다. 단일항체로는 anti-D, $anti-Di^a$, $anti-Fy^b$, $anti-Jk^a$, $anti-Jk^b$, anti-M, anti-P1이 각각 1건(2.44%)로 나타났으며 복합항체로는 anti-C+anti-D, anti-E+anti-c+$anti-Jk^b$가 각각 1건(2.44%)로 조사되었다. 단일항체가 동정된 검체는 19건(46.34%), 복합항체가 동정된 검체는 11건(26.83%)로 나타났다. 제주지역의 종합병원은 제주시와 서귀포시에 위치한 종합병원 7개 기관이 있으며, 모두 비예기항체 선별검사를 시행하고 있으며, 검사방법으로는 모든 검사실에서 Ortho BioVue system을 이용한 원주응집법으로 검사를 시행하고 있다. 하지만 비예기항체 동정검사는 외부수탁기관에 의뢰하고 있는 실정이다. 이번 연구는 최근 3년간 제주도내 종합병원 1개 기관에서의 동정된 비예기항체 빈도와 분포를 분석하였지만, 점차적으로 제주도내 다문화가정과 외국인 근로자가 증가 추세에 있어 향후 제주지역에 분포한 다수의 종합병원에서 동정되는 비예기항체의 빈도와 분포를 비교 분석한다면 의미가 있는 연구가 될 것이라고 사료된다.