• 제목/요약/키워드: HBS

검색결과 309건 처리시간 0.03초

우리나라 일부지역 119구조구급대원의 HBsAg 및 Anti-HBs 검출에 있어서 EIA법과 RPHA법 및 PHA법에 따른 양성률비교 (Comparison Study of Positive Rates According to the Methods of EIA, RHA and PHA in Detecting of HBsAg, Anti-HBs Among -119 Emergency Medical Technicians and Rescuers in Korea)

  • 박정미
    • 한국응급구조학회지
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    • 제1권1호
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    • pp.20-27
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    • 1997
  • This study of the positive rates of HBsAg, anti-HBs among 119 Emergency Medical Technicians and Rescuers who were working in Pohang, Kyoung-Buk, Korea was performed from March to June 1997 according to three methods of EIA, RPHA and PHA. The number of samples were 201. The results were as follows; The overall positive rate of HBs Ag by EIA and RPHA methods were 4.98%, 5.47%, the overall positive rate of anti-HBs by EIA and PHA methods were 58.71%, 63.68%. In detecting of HBs Ag, concurrence rate, sensitivity, specificity and predictability of PHA to EIA were 99.5%, 90.9%, 100% and 99.75% respectively. In detecting of anti-HBs, concurrence rate, sensitivity, specificity and predictability of PHA to EIA were 91.04%, 89%, 94.5% and 89.87% respectively. Based on this study, there were no significant diffrences in the positive rates of HBsAg and Anti-HBs in 119 Emergency Medical Technicians and Rescurers in Pohang, Korea as compared with the general population according to other studies. In terms of concurrence rate, sensitivity, specificity and the costs of RPHA with EIA for detecting HBsAg, RPHA is more cost effective than EIA for mass screening of HBsAg detection. Also, In terms of concurrence rate, sensitivity and specificity of PHA with EIA, PHA is more cost effective and less problems of procedure than the EIA for mass screening of Anti-HBs detection.

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Expression of Hepatitis B Virus S Gene in Pichia pastoris and Application of the Product for Detection of Anti-HBs Antibody

  • Hu, Bo;Liang, Minjian;Hong, Guoqiang;Li, Zhaoxia;Zhu, Zhenyu;Li, Lin
    • BMB Reports
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    • 제38권6호
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    • pp.683-689
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    • 2005
  • Antibody to hepatitis B surface antigen (HBsAb) is the important serological marker of the hepatitis B virus (HBV) infection. Conventionally, the hepatitis B surface antigen (HBsAg) obtained from the plasma of HBV carriers is used as the diagnostic antigen for detection of HBsAb. This blood-origin antigen has some disadvantages involved in high cost, over-elaborate preparation, risk of infection, et al. In an attempt to explore the suitable recombinant HBsAg for the diagnostic purpose, the HBV S gene was expressed in Pichia pastoris and the product was applied for detection of HBsAb. Hepatitis B virus S gene was inserted into the yeast vector and the expressed product was analyzed by sodium dodecyl sulphate polyacrolamide gel electrophoresis (SDS-PAGE), immunoblot, electronic microscope and enzyme linked immunosorbent assay (ELISA). The preparations of synthesized S protein were applied to detect HBsAb by sandwich ELISA. The S gene encoding the 226 amino acid of HBsAg carrying ahexa-histidine tag at C terminus was successfully expressed in Pichia pastoris. The His-Tagged S protein in this strain was expressed at a level of about 14.5% of total cell protein. Immunoblot showed the recombinant HBsAg recognized by monoclonal HBsAb and there was no cross reaction between all proteins from the host and normal sera. HBsAb detection indicated that the sensitivity reached 10 mIu (micro international unit)/ml and the specificity was 100% with HBsAb standard of National Center for Clinical Laboratories. A total of 293 random sera were assayed using recombinant S protein and a commercial HBsAb ELISA kit (produced by blood-origin HBsAg), 35 HBsAb positive sera and 258 HBsAb negative sera were examined. The same results were obtained with two different reagents and there was no significant difference in the value of S/CO between the two reagents. The recombinant HBV S protein with good immunoreactivity and specificity was successfully expressed in Pichia pastoris. The reagent for HBsAb detection prepared by Pichia pastoris-derived S protein showed high sensitivity and specificity for detection of HBsAb standard. And a good correlation was obtained between the reagent produced by recombinant S protein and commercial kit produced by blood-origin HBsAg in random samples.

수정란 이식시 생쥐 완전탈출 배반포기배의 유용성 검토 (Study on The Usability of Mouse Hatched Blastocysts in Embryos Transfer)

  • 이봉경;김은영;남화경;이금실;윤산현;박세필;임진호
    • 한국가축번식학회지
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    • 제22권1호
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    • pp.11-17
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    • 1998
  • 본 연구는 생쥐 완전탈출 배반포기배의 체내 발달율을 조사하기 위해 실시하였다. 공시된 완전탈출 배반포기배는 체내에서 생산된 전핵기 수정란을 5일과 6일동안 체외배양하여 얻었으며, 완전탈출 배반포기배의 직경을 기준으로 small(S-HBs), medium(M-HBs), large(L-HBs)로 구분하였다. 그 결과를 요약하면 다음과 같다. 1) 체외배양 4일째에 얻어진 배반포기배를 $24\sim48$시간동안 추가배양했던 바, 배양 5일과 6일째에 완전탈출 배반포기배의 발달율은 29.1%와 22.8%였다. 2) 또한, 완전탈출 배반포기배의 총 세포수를 조사하였던 바, S-HBs ($77.7\pm5.3$, $59.6\pm4.4$), M-HBs ($83.7\pm4.0$, $66.8\pm3.5$), L-HBs ($100.7\pm2.6$, $88.9\pm3.8$)로 나타나, 완전탈출 배반포기배의 크기가 증가함에 따라 총 세포수도 증가한다는 것을 알 수 있었다. 특히, S-HBs와 L-HBs의 총 세포수간에는 유의적인 차이가 있었다.(p<0.01). 3) 분류된 완전탈출 배반포기배를 가임신 3일된 대리모의 자궁에 이식하였을 때, 배양 5일째의 임신율과 착상율이 S-HBs (28.6%, 15.7%), M-HBs (44.4%, 30.9%), L-HBs (62.5%, 49.1%)로서 완전탈출 배반포기배의 크기가 커질수록 증가하였던 반면, 배양 6일째에는 이러한 양상을 볼 수 없었다. 그러나, 전체 착상율에 대한 정상산자율을 조사하였던 바, 배양 5일째의 S-HBs (87.5%)가 다른 군에 비하여 유의하게 높게 나타났다. (p<0.01). 따라서, 이러한 결과로 미루어 볼 때, 체외에서 배양된 건강한 완전탈출 배반포기배는 높은 임신율과 착상율 및 정상산자율을 얻을 수 있음을 확인하였던 바, 이는 인간포배기 배아이식시 잉여의 완전탈출 배반포기배의 유용성 검토를 위한 기초자료로서 이용될 수 있음을 시사한다고 하겠다.

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A Case Report of HBsAg Seroclearance in Chronic Hepatitis B Patient

  • 이혁재
    • 대한임상검사과학회지
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    • 제44권3호
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    • pp.142-146
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    • 2012
  • Hepatitis B surface antigen (HBsAg) seroclearance is a rare event in chronic hepatitis B virus (HBV) infection which acquires the disease early in life. A case study have examined with asymptomatic chronic hepatitis B carrier who exhibits HBsAg seroclearance in anti-HBe positive. We comprehensively studied the biochemical, virological and clinical aspects of a patient with HBsAg seroclearance. Liver biochemistry, serological markers, serum HBV DNA levels, and development of clinical complications were monitored. Mutation of hepatitis B virus is suspected serum HBsAg detected by the HBsAg assay systems of VITROS (OrthoClinical Diagnostics, USA), AxSYM (Abbott Laboratories, USA), Elecsys (Roche Diagnostics, Germany) and ADVIA Centaur (Bayer Diagnostics, USA). These four immunoassays showed negative results. Also, the patient had undetectable serum HBV DNA. Therefore, no mutation within the "a" determinant of HBsAg, which might escape detection from HBsAg immunoassay were found. Natural seroclearance was confirmed.

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BIACORE 바이오센서를 이용한 B형 간염 표면항원 정량분석의 기초연구

  • 유창훈;류강;전준영;이현익;최성철;이은규
    • 한국생물공학회:학술대회논문집
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    • 한국생물공학회 2001년도 추계학술발표대회
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    • pp.231-234
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    • 2001
  • Biacore 바이오센서를 이용하여 재조합 HBsAg 를 정량분석하기 위해 CM5 칩 위에 anti-HBsAg polyclonal antibody를 저밀도 (2,304.2 RU)와 고밀도(17635.9 RU)로 고정화한 후 다양한 농도의 HBsAg를 흘려주어 각 농도별 sensorgram을 얻었다. 각 sensorgram으로부터 결합된 HBsAg의 질량을 구하여 액체 시료 내의 HBsAg의 농도 대 칩에 결합된 HBsAg의 질량 사이의 상관관계를 구한 결과 Langmuir 단일층 흡착 등온선과 매우 유사한 형태의 calibration curve를 얻었다. 약 40 ${\mu}g/m{\ell}$ 까지 선형 관계가 유지되었다. 이 calibration curve를 double-reciprocal plotting 하여 $RU_{max}$ 값을 각각 구한 뒤, 단위 질량의 고정화된 항체 당 결합된 HBsAg의 질량을 구한 결과 저밀도 칩에서 0.024, 고밀도 칩에서 0.023 으로 매우 유사한 결과를 나타내었다.

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윤락여성의 혈청 HBsAg 및 Anti-HBs 양성율 (Prevalence Rate of HBsAg and Anti-HBs in prostitutes)

  • 김창윤
    • Journal of Preventive Medicine and Public Health
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    • 제16권1호
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    • pp.13-18
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    • 1983
  • 성적접촉에 의한 B형간염의 전파가능성을 조사하고 그 정도를 파악할 목적으로 1982년 3월 1일부터 7월 31까지 대구시내 윤락여성 435명을 대상으로 B형간염감염율과 그들의 연령, 종사기간, 교육수준, 수혈 및 수술력을 조사하였다. B형간염 virus 보유율이 높은 한국인을 상대로 하는 중구보건소에 등록된 윤락여성의 경우 B형간염 감염율이 41.7%였고 B형간염 virus 보유율이 낮은 주한미군을 상대로 하는 동 남구보건소에 등록된 윤락여성에서는 30.2%의 감염율을 나타내어 중구보건소에 등록된 윤락여성이 통계적으로 유의하게 높은 잠염율을 보였다(p<0.025). 동 남구보건소에 등록된 윤락여성에서는 종사기간 별로 별다른 차이를 보이지 않았으나 중구보건소에 등록된 윤락여성에서는 2년 이상의 경우 B형간염 감염율이 49.3%였고 2년 미만의 경우 38.9%로 차이는 있으나 통계적 유의수준에는 미치지 못하였다. 교육수준, 수술력 및 수혈력과 B형간염, 감염율 사이에는 일정한 상관관계를 보이지 않았다. 이상의 결과로 미루어 보아 성적접촉으로 B형간염이 어느정도 전파되기는 하나 주전파 경로는 아닌 것으로 생각된다.

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HBe항원 양성 산모에서 출생한 HBe항원 양성인 신생아의 추적관찰 (Sequential Analysis of Hepatitis Be Antigen Status in Infants Born to Hepatitis Be Antigen-Positive Mothers)

  • 박은숙;이해경;오창희;김성구;윤혜선;송원근;이영아
    • Clinical and Experimental Pediatrics
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    • 제45권6호
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    • pp.727-731
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    • 2002
  • 목 적 : HBsAg 양성이면서 HBeAg 양성인 산모에서 태어난 신생아에서 출생 직후 HBsAg은 음성이면서 HBeAg 양성이 어떤 의미가 있는 것인지에 대해 알아보았다. 방 법: 1996년 12월부터 1999년 3월까지 HBsAg과 HBeAg이 모두 양성인 산모로부터 출생한 신생아 중에서 HBsAg 음성이면서 HBeAg 양성인 신생아 22명을 대상으로 추적 관찰하였다. 결 과 : 1) 분만 산모의 총 수 4,338명 중 HBsAg 양성은 4.9%(213/4338), HBsAg 양성인 산모에서 HBeAg을 검사한 183례 중 HBeAg 양성은 41.5%(76/183)이었다. 2) HBeAg 양성인 산모에서 출생한 신생아에서 HBeAg 검사를 시행 받은 49례에서 HBsAg 음성이고 HBeAg 양성인 신생아는 36례로 73.5%이었다. 이중 추적관찰이 가능했던 22례에서 태반을 통해 전달된 HBeAg이 2개월 내에 소실된 경우가 7례(31.3%)로 가장 많았으며 90%이상이 12개월 내에 소실되었으며 결국 22례 모두에서 소실되는 소견을 보였다. 단 1례에서 HBeAg은 소실되었으나 6개월에 HBsAg이 양성이었다. 결 론: HBeAg이 양성인 간염 보균산모에서 신생아의 HBeAg은 감염이라기 보다는 태반을 통해 전달되는 산모의 HBeAg으로 일시적인 현상이며 임상적인 문제없이 소실되는 것으로 사료된다.

A Study on the Positive Rates of HBsAg and Anti-HBs from Old People's Home and Casual Ward in Daegu, Korea

  • Shin, Hyun Gyu
    • 대한임상검사과학회지
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    • 제43권4호
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    • pp.145-149
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    • 2011
  • Serum hepatitis is still recognized as a major public health problem in many countries. The most common etiologies are acute viral hepatitis A and B, and hepatitis B virus (HBV) was known as the pathogen of serum hepatitis. since the HBV causes chronic hepatitis. HBV infection is hyperendemic in Korea. It is known that 8% and 1% of the Korean population is chronic carriers of HBV. The total number of 487 serum specimen (old people's home 190, causal ward-Daegu hope village 297) were collected at the laboratory of Department of Clinical Pathology of Daegu medical center. The laboratory tested the specimen to detect for hepatitis B surface antigen (HBsAg) and anti-HBs using reverse passive hemag-glutination (RPHA) and passive hemagglutination (PHA) method between April, 2011 and June, 2011. In one-step test, HBsAg and anti-HBs of Humasis were used. The positive rate for HBsAg was 6.80% (33/487), and the rate in male was 6.93% (19/274) higher than that of female 6.57% (14/213). In the positive rate of HBsAg by age group, the highest positive rate group was in the group of 40-49 years in male (12.0%), and 50-59 years in female (17.65 %). The overall positive rate for anti-HBs was 42.70% (208/487), showing the higher positive rate of 43.80% in male (120/274) than that of 41.30% (88/213) in female. The highest positive rate of anti-HBs in age group was the 40-49 years group in male (52.00%) and the group of under 29 in female (66.67%).

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Association between body mass index and hepatitis B antibody seropositivity in children

  • Kwon, Yoowon;Jeong, Su Jin
    • Clinical and Experimental Pediatrics
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    • 제62권11호
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    • pp.416-421
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    • 2019
  • Background: The seropositivity rate of hepatitis B surface antigen (anti-HBs) antibodies is known to be ≥95% after hepatitis B virus vaccination during infancy. However, a low level or absence of anti-HBs in healthy children is discovered in many cases. Recent studies in adults reported that a reduced anti-HBs production rate is related to obesity. Purpose: To investigate whether body mass index (BMI) affects anti-HBs levels in healthy children following 3 serial dose vaccinations in infancy. Methods: We recruited 1,200 healthy volunteers aged 3, 5, 7, or 10 years from 4-day care centers and 4 elementary schools. All subjects completed a questionnaire including body weight, height, and vaccine type received. Levels of serum hepatitis B surface antigen (HBsAg) and anti-HBs in all subjects were analyzed using electrochemiluminescence immunoassay. The standardized scores (z score) for each sex and age were obtained using the lambda-mu-sigma method in the 2017 Korean National Growth Charts for children and adolescents. Results: Our subjects (n=1,200) comprised 750 males (62.5%) and 450 females (37.5%). The overall anti-HBs seropositivity rate was 57.9% (695 of 1,200). We identified significant differences in mean BMI values between seronegative and seropositive groups (17.45 vs. 16.62, respectively; P<0.001). The anti-HBs titer was significantly decreased as the BMI z score increased adjusting for age and sex (B=-15.725; standard error=5.494; P=0.004). The probability of anti-HBs seropositivity based on BMI z score was decreased to an OR of 0.820 after the control for confounding variables (95% confidence interval, 0.728-0.923; P=0.001). Conclusion: There was a significant association between anti-HBs titer and BMI z score after adjustment for age and sex. Our results indicate that BMI is a potential factor affecting anti-HBs titer in healthy children.

B형 간염백신 접종시행 이후 혈청 Anti-HBs 양성율에 관한 조사 (The Positive Rate for Serum Anti-HBs in Korean since the Universal Carrying Out of HB Vaccination)

  • 이헌주;정문관;김종설
    • Journal of Yeungnam Medical Science
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    • 제4권1호
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    • pp.75-80
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    • 1987
  • 저자들은 국내에서 B형 간염백신이 사용된 이래 일반주민의 혈청 anti-HBs양성율과 접종이후 장시간이 경과된 후의 접종자들의 혈청 anti-HBs 양성율을 조사하기 위하여 1986년 1월 부터 1987년 3월까지 영남의료원 건강진단센터를 방문한 2,459명을 대상으로 한 문진과 검사결과를 토대로 하여 다음의 결과를 얻었다. 1. B형 간염백신 접종군과 비접종군에서의 혈청 HBsAg 양성율은 각각 0.7%와 9.6%였으며 전체검사자중에서는 8.0%로 나타났다. 2. B형 간염백신 접종군과 비접종군에서의 혈청 anti-HBs 양성율은 각각 66.3%와 47.9%였으며 전체검사자중 51.0%였다. 3. 1회나 2회의 기본접종만 받은 군에서의 혈청 anti-HBs 양성율은 각각 51.4%와 68.6%였고 3회의 기본접종을 받은 군에서는 67.6%의 양성율을 나타냈다. 따라서 현재 일반주민의 혈청 anti-HBs 양성율은 과거보다 높아져 있으나 특히 백신접종으로 항체를 획득한 후는 시간이 경과됨에 따라 역가가 저하되는 것으로 생각되며 접종후는 혈청 anti-HBs의 출현을 확인한 후에 필요시는 더욱 정밀한 방법으로의 검사와 각자의 상황에 따른 적절한 시기의 추가 접종이 요구될 것으로 생각된다.

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