• 제목/요약/키워드: immunoglobulin E

검색결과 351건 처리시간 0.025초

잡종세포종기법을 이용한 대장균의 장독소 측정법 개발 (Development of Assay Methods for Enterotoxin of Escherichia coli Employing the Hybridoma Technology)

  • 김문교;조명제;박경희;이우곤;김윤원;최명식;박중수;차창용;장우현;정홍근
    • 대한미생물학회지
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    • 제21권1호
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    • pp.151-161
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    • 1986
  • In order to develop sensitive and sepcific assay methods for E. coli heat labile enterotoxin(LT) hybridoma cell lines secreting LT specific monoclonal antibody were obtained. LT was purified from cell lysate of E. coli O15H11. The steps included disruption of bacteria by French pressure, DEAE Sephacel ion exchange chromatography, Sephadex G200 gel filtration, and second DEAE Sephacel ion exchange chromatography, successively. Spleen cells from Balb/c mice immunized with the purified LT and $HGPRT^{(-)}$ plasmacytomas, $P3{\times}63Ag8.V653$ were mixed and fused by 50% (w/v) PEG. Hybrid cells were grown in 308 wells out of 360 wells, and 13 wells out of them secreted antibodies reacting to LT. Among these hybridoma cell 1G8-1D1 cell line was selected since it had produced high-titered monoclonal antibody continuously. By using culture supernatant and ascites from 1G8-1D1 cells the monoclonal antibody was characterized, and an assay system for detecting enterotoxigenic E. coli was established by double sandwich enzyme-linked immunosorbent assay (ELISA). The following results were obtained. 1. Antibody titers of culture supernatant and ascites from 1G8-1D1 hybridoma cells were 512, and 102, 400, respectively by GM1-ELISA and its immunoglobulin class was IgM. 2. The maximum absorption ratio of 1G8-1D1 cell culture supernatant to LT was 90% at $300\;{\mu}g/ml$ of LT concentration. LT concentration shown at 50% absorption ratio was $103.45{\mu}g$ and the absorption ratio was decreased with tile reduction of LT concentration. This result suggests that monoclonal antibody from 1G8-1D1 hybridoma cell bound with LT specifically. 3. The reactivities of 1G8-1D1 cell culture supernatant to LT and V. cholerae enterotoxin(CT) were 0.886 and 0.142(O.D. at 492nm) measured by the GM1-ELISA, indicating 1G8-1D1 monoclonal antibody reacted specifically with LT but not with CT. 4. The addition of 0.1ml of ascites to 0.6mg and 0.12mg of LT decreased the vascular permeability factor to 41% and 44% respectively, but it did not completely neutralize LT. 5. By double sandwich ELISA using monoclonal antibody, as little as 75ng of the purified LT per ml could be detected. 6. The results by assay of detecting LT in culture supernatants of 14 wild strains E. coli isolated from diarrhea patients by the double sandwich ELISA were almost the same level as those by reverse passive latex agglutination.

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Pollen-Food Allergy Syndrome in Korean Pollinosis Patients: A Nationwide Survey

  • Kim, Mi-Ae;Kim, Dong-Kyu;Yang, Hyeon-Jong;Yoo, Young;Ahn, Youngmin;Park, Hae-Sim;Lee, Hyun Jong;Jeong, Yi Yeong;Kim, Bong-Seong;Bae, Woo Yong;Jang, An-Soo;Park, Yang;Koh, Young-Il;Lee, Jaechun;Lim, Dae Hyun;Kim, Jeong Hee;Lee, Sang Min;Kim, Yong Min;Jun, Young Joon;Kim, Hyo Yeol;Kim, Yunsun;Choi, Jeong-Hee;Work Group for Rhinitis, the Korean Academy of Asthma, Allergy and Clinical Immunology
    • Allergy, Asthma & Immunology Research
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    • 제10권6호
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    • pp.648-661
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    • 2018
  • Purpose: Pollen-food allergy syndrome (PFAS) is an immunoglobulin E (IgE)-mediated allergy in pollinosis patients caused by raw fruits and vegetables and is the most common food allergy in adults. However, there has been no nationwide study on PFAS in Korea. In this study, we investigated the prevalence and clinical characteristics of PFAS in Korea. Methods: Twenty-two investigators participated in this study, in which patients with allergic rhinoconjunctivitis and/or bronchial asthma with pollen allergy were enrolled. The questionnaires included demographic characteristics, a list of fruits and vegetables, and clinical manifestations of food allergy. Pollen allergy was diagnosed by skin prick test and/or measurement of the serum level of specific IgE. Results: A total of 648 pollinosis patients were enrolled. The prevalence of PFAS was 41.7% (n = 270). PFAS patients exhibited cutaneous (43.0%), respiratory (20.0%), cardiovascular (3.7%) or neurologic symptoms (4.8%) in addition to oropharyngeal symptoms. Anaphylaxis was noted in 8.9% of the PFAS patients. Seventy types of foods were linked to PFAS; e.g., peach (48.5%), apple (46.7%), kiwi (30.4%), peanut (17.4%), plum (16.3%), chestnut (14.8%), pineapple (13.7%), walnut (14.1%), Korean melon (12.6%), tomato (11.9%), melon (11.5%) and apricot (10.7%). Korean foods such as taro/taro stem (8.9%), ginseong (8.2%), perilla leaf (4.4%), bellflower root (4.4%), crown daisy (3.0%), deodeok (3.3%), kudzu root (3.0%) and lotus root (2.6%) were also linked to PFAS. Conclusions: This was the first nationwide study of PFAS in Korea. The prevalence of PFAS was 41.7%, and 8.9% of the PFAS patients had anaphylaxis. These results will provide clinically useful information to physicians.

알레르기성 천식환자에 있어서 투베르쿨린 피부반응 검사와 Cytokine의 변화 (Tuberculin Skin Test and Change of Cytokines in Patients with Allergic Asthma)

  • 윤형규;신윤;이상학;이숙영;김석찬;안중현;김관형;문화식;박성학;송정섭
    • Tuberculosis and Respiratory Diseases
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    • 제46권2호
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    • pp.175-184
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    • 1999
  • 연구배경: 알레르기성 기관지 천식은 가역적인 기도폐색과 기관지의 과민성을 동반하는 기도의 만성적인 호산구성 염증성 질환으로서 기도의 염증발현에 관여하는 세포는 여러가지가 있지만 Th 림프구는 cytokine을 분비하여 염증반응을 조절하는 중요한 역할을 하고 있다. Th 림프구는 cytokine의 분비양상에 따라 Th1 림프구와 Th2 림프구로 나뉘어지며 Th1 림프구는 지연형 과민반응과 결핵균이나 바이러스 감염등에 대한 방어작용 그리고 종양에 대한 숙주반응에 관여하고 Th2 림프구는 즉시형 과민반응과 알레르기성 천식과 같은 알레르기성 질환 그리고 기생충 감염등에 대한 방어작용에 관여한다. Th1 림프구와 Th2 림프구는 서로 길항작용을 하는 것으로 알려지고 있어 대표적인 Th1 림프구 매개 질환인 결핵과 Th2 림프구 매개질환인 알레르기성 기관지 천식은 서로의 발생을 억제할 것으로 추정되며 알레르기성 기관지 천식환자에서는 Th2 림프구의 기능이 항진되어 Th1 림프구의 기능이 억제되고 반대로 Th1 림프구의 기능이 정상인 집단에서는 알레르기성 천식환자에 비해 Th2 림프구의 기능이 저하되어 있을 것으로 추정된다. 방 법: 정상 대조군과 알레르기성 천식환자군, 그리고 내인성 천식환자군에서 투베르쿨린 피부반응의 양상을 실시하여 지연형 과민반응의 양상을 관찰하고 혈청 IgE의 농도와 말초혈액 호산구 수를 조사하였다. 그리고 Th1 림프구에서 주로 생산되는 cytokine인 IFN-$\gamma$와 IL-12, Th2 림프구에서 주로 생산되는 IL-4, IL-5, IL-10의 혈청 농도를 측정하였다. 결 과: 투베르쿨린 피부반응의 양성율은 알레르기성 천식환자군이 내인성 천식환자군에 비해 투베르쿨린 피부반응에 대한 양성율이 유의하게 낮았으며(p<0.05), 투베르쿨린 피부반응의 정도는 내인성 천식환자군에 비하여 알레르기성 천식환자에서 유의하게 감소되어 있었다 (p<0.05). IL-4와 IL-10은 알레르기성 천식환자군에서 다른 두 군에 비하여 통계적으로 유의하지 않았으나 증가되어 있었고 IL-5는 알레르기성 천식환자군에서 다른 두 군에 비하여 유의하게 증가되어 있었다 (p<0.01). IL-12와 IFN-$\gamma$는 알레르기성 천식환자군과 내인성 천식환자군에서 정상 대조군에 비하여 유의하게 감소되어 있었다(p<0.05). 알레르기성 천식환자군에서 말초 혈액 호산구 수와 혈청 IgE 농도는 정상 대조군에 비하여 유의하게 증가하여 있었다(p<0.05). 알레르기성 천식환자에서 말초혈액 호산구 수는 혈청 IgE(r=0.737, p=0.003), IL-5(r=0.352, p=0.038), IL-10(r=0.827, p=0.001)과 서로 유의한 상관관계를 보이면서 증가하고 있었다. 전체적으로 Th2 cytokine인 IL-5와 IL-10의 혈청 농도는 서로 유의한 상관관계를 나타내고 있었고(r=0.340, p=0.046), IL-12와 IFN-$\gamma$ 혈청 농도도 서로 유의한 상관관계를 나타내고 있었다(r=0.593, p=0.001). 결 론: 알레르기성 기관지 천식환자는 정상 대조군에 비하여 Th1 림프구의 기능이 저하되어 있었고 Th2 림프구의 기능은 항진되어 있었으며, 이러한 Th2 림프구의 기능 항진은 말초혈액 호산구 수와 혈청 IgE와 유의한 상관관계를 보이고 있어 Th2 림프구 기능 항진이 알레르기성 기관지 천식의 병인에 중요한 역할을 할 가능성이 있음을 알 수 있다.

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육계의 성장능력 향상을 위한 이눌로프리바이오틱스의 적정 첨가수준 결정 (Determination of Optimal Added-Levels of Inuloprebiotics for Promotion of Growing Performance in Broiler Chickens)

  • 박병성
    • 생명과학회지
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    • 제21권5호
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    • pp.684-692
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    • 2011
  • 본 연구는 브로일러의 성장능력을 촉진하기 위한 사료 내 이눌로프리바이오틱스의 적정 첨가수준을 결정하기 위하여 수행하였다. 부화 당일 로스계통(Ross 308)의 브로일러 수컷 320수를 4개의 처리구로 완전임의배치하여 35일 동안 사육하였다. 실험처리구는 대조구(무첨가구), 항생제 첨가구(avilamycin 8 ppm), 이눌로프리바이오틱스 200 ppm 첨가구 및 이눌로프리바이오틱스 250 ppm 첨가구로 구분하였다. 브로일러의 체중과 사료섭취량은 두개의 이눌로프리바이오틱스 첨가구가 대조구, 항생제 첨가구 보다도 높았고, 항생제 첨가구는 대조구에 비해서 높았으며 통계적인 유의차가 인정되었다. 전체 실험기간 동안 사료요구율은 대조구가 이눌로프리바이오틱스 첨가구와 비교할 때 유의하게 높았으나 항생제 첨가구와 이눌로프리바이오틱스 첨가구 사이의 통계적인 유의차는 없었다. 도체중, 도체율, 가슴살, 다리살의 무게는 이눌로프리바이오틱스 첨가구가 대조구, 항생제 첨가구에 비해서 유의하게 높았고, 이눌로프리바이오틱스 200 ppm, 250 ppm 첨가구 사이의 차이는 없었으나 항생제 첨가구는 대조구에 비해서 유의하게 높았다. 복강지방은 이눌로프리바이오틱스 첨가구가 유의하게 감소(19.08~23.30%)하였으며 혈액 면역물질과 흉선, F낭의 무게는 이눌로프리바이오틱스 첨가구가 대조구와 항생제 첨가구에 비해서 유의하게 증가하였다. 장내 유익한 Bifidobacteria와 Lactobacillu는 이눌로프리바이오틱스 첨가구가 대조구와 항생제 첨가구에 비해서 유의하게 증가하였으나 유해한 E. coli와 Salmonella는 그 반대로 나타났으며 통계적인 유의차가 인정되었다. 본 연구는 브로일러의 성장능력 향상을 위한 사료 내 이눌로프리바이오틱스의 적정 첨가수준은 200 ppm에서 결정될 수 있음을 보여준다.

면역기능이 정상인 영아에서 동경주 BCG 백신 접종 후 발생한 파종성 Mycobacterium bovis 감염 1예 (A Case of Disseminated Mycobacterium bovis Infection after BCG Vaccination (Tokyo strain) in an Apparently Immunocompetent Infant)

  • 백지연;최재홍;김민경;최은화;이환종;박경운
    • Pediatric Infection and Vaccine
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    • 제18권1호
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    • pp.91-96
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    • 2011
  • BCG는 M. bovis로부터 유래된 생백신으로 5-6세 미만의 소아 결핵 특히 결핵성 수막염이나 속립성 결핵과 같은 중증 결핵의 예방 효과가 인정되고 있다. BCG 접종 후 이상반응은 국소 궤양 형성, 국소 림프절염이 가장 흔하며, 드물지만 골수염, 파종성 감염과 같은 치명적인 합병증도 있다. 파종성 BCG 감염은 주로 면역저하 환자에게서 흔하게 관찰되며 면역 저하가 없는 소아에게서 발생한 파종성 BCG 감염은 국내 문헌상 보고가 없었다. 저자들은 13개월 여환이 BCG 접종 5개월 뒤 발생한 발열, 피부 결절 및 다발성 림프절 종대를 주소로 내원하여, 백 신 접종 부위 외에 2군데에서 M. bovis BCG를 확인한 후 파종성 BCG 감염으로 진단된 1례를 경험하였다. 환아는 isoniazid와 rifampin으로 치료받았으며 약 2주 간의 입원 치료 후 임상 증상이 호전되어 퇴원하였다. 3주뒤 외래 추적 관찰에서 역설적 반응으로 생각되는 림프 절 종대와 피부 결절이 진행하였으나 동일 약제를 유지하면서도 다시 임상 증상이 호전되었고 환아의 면역학적 검사상 이상 소견이 관찰되지 않았기에 이를 보고하는 바이다.

폭염 브로일러 닭의 혈액지질 및 짧은 사슬지방산에 대한 폭염사료와 역전점등 효과 (Effects of inverse lighting and extreme heat diet on short chain fatty acid and blood lipid profile in extreme heat stress-exposed broilers)

  • 박상오;황보종;박병성;최희철
    • 한국응용과학기술학회지
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    • 제30권3호
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    • pp.400-410
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    • 2013
  • This study was carried out to investigate the effects of feeding the broilers that are exposed to extreme heat stress by control of inverse lighting times with night restricted feeding of extreme heat diet(EHD1, 2: extreme heat diet) containing different amount of soy oil, molasses, amino acids and vitamin C on short chain fatty acid and blood lipid profile. 300 broiler chickens(Abaica strain) were randomized into four dietary treatment groups according to a randomized block design on the day they were hatched. The four dietary treatment groups were: T1(EHD 1, 10:00~19:00 Dark, 19:00~10:00 Light), T2(EHD 2, 10:00~19:00 Dark, 19:00~10:00 Light), T3(EHD 1, 09:00~18:00 Dark, 18:00~09:00 Light), T4(EHD 2, 09:00~18:00 Dark, 18:00~09:00 Light). The body weight gain of the broilers was highest in T2, and high in order T1, T4, T3(p<0.05). Weights of the lymphoid organ, thymus and bursa of Fabricius were high in T1, T2 as compared to T3, T4 but spleen was lower in T4 than T1, T2, T3(p<0.05). Blood triglyceride, total cholesterol and glucose were higher in T1, T2 than T3, T4(p<0.05). LDL-C was high in orderT4, T3, T2, T1 but HDL-C showed the opposite trend(p<0.05). Blood concentrations of IgG, IgG and IgM were higher in T1, T2 than inT3, T4, but the corticosterone concentration decreased significantly in them. In T1 and T2, Lactobacillus in the feces increased, but total aerobic bacteria, E.coli, coliform bacteria was decreased rather significantly, compared with those in T3 and T4(p<0.05). Concentrations of acetic acid, propionic acid and total SCFA in cecum were high in order T2, T1, T3, T4, but butyric acid, isobutyric acid, valeric acid, isovaleric acid were lower in T1, T2 than in T3, T4 (p<0.05).

Clinical Characteristics of Human Parvovirus B19 Infection in Children

  • Jo, Kyo Jin;Lee, Yeoun Joo;Park, Kyung Mi;Yang, Eu Jeen;Yoo, Sukdong;Lim, Taek Jin;Park, Su Eun
    • Pediatric Infection and Vaccine
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    • 제27권2호
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    • pp.111-116
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    • 2020
  • 목적: 인간 파르보바이러스 B19 감염은 무증상에서 생명을 위협하는 합병증에 이르기까지 광범위하고 다양한 증상을 나타낸다. 우리는 파르보바이러스 B19 감염의 지역사회 내 집단발생 시기 동안, 파르보바이러스 B19 감염의 다양한 임상 양상에 대해 조사하였다. 방법: 2017년 12월부터 2019년 4월까지 부산대학교 어린이병원에서 파르보바이러스 B19 면역 글로불린 M (IgM) 또는 중합효소 연쇄 반응(polymerase chain reaction, PCR)에 의해 검출된 파르보바이러스 B19 DNA를 가진 소아의 임상적 특징을 후향적 차트 분석을 통해 알아보았다. 결과: 24명의 어린이가 파르보바이러스 B19 감염으로 진단되었다. 24명의 환자 중 12명(50%)은 레이스 형태 발진이 있었고, 24명의 환자 중 4명(16.7%)은 점상출혈 발진, 24명의 환자 중 2명(8.3%)은 무병소 발열로 진단되었다. 24명 중 6명의 환자(25%)는 골수무형성위기가 발생하였고, 이 중 3명은 이전에 유전 구형적혈구증, 3명은 이전에 급성 림프모구 백혈병으로 진단되었던 환자이다. 결론: 감염홍반 외에도 파르보바이러스 B19 감염의 임상적 특징은 다양한 종류의 발진과 무병소 발열으로 나타날 수 있다. 또한, 혈액학적 증상으로 중성구 감소증, 골수무형성 위기와 같이 발생할 수 있다.

Chronic inflammatory demyelinating polyneuropathy in children: a report of four patients with variable relapsing courses

  • Chang, Soo Jin;Lee, Ji Hyun;Kim, Shin Hye;Lee, Joon Soo;Kim, Heung Dong;Kang, Joon Won;Lee, Young Mock;Kang, Hoon-Chul
    • Clinical and Experimental Pediatrics
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    • 제58권5호
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    • pp.194-198
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    • 2015
  • Chronic inflammatory demyelinating polyneuropathy (CIDP) is a chronically progressive or relapsing symmetric sensorimotor disorder presumed to occur because of immunologic antibody-mediated reactions. To understand the clinical courses of CIDP, we report variable CIDP courses in children with respect to initial presentation, responsiveness to medical treatment, and recurrence interval. Four patients who were diagnosed with acute-onset and relapsing CIDP courses at Severance Children's Hospital, Seoul, Korea, were enrolled in this retrospective study. We diagnosed each patient on the basis of the CIDP diagnostic criteria developed in 2010 by the European Federation of Neurological Societies/Peripheral Nerve Society Guidelines. We present the cases of four pediatric patients diagnosed with CIDP to understand the variable clinical course of the disease in children. Our four patients were all between 8 and 12 years of age. Patients 1 and 2 were diagnosed with acute cerebellar ataxia or Guillain-$Barr{\acute{e}}$ syndrome as initial symptoms. While patients 1 and 4 were given only intravenous dexamethasone (0.3 mg/kg/day) for 5 days at the first episode, Patients 2 and 3 were given a combination of intravenous immunoglobulin (2 g/kg) and dexamethasone (0.3 mg/kg/day). All patients were maintained with oral prednisolone at 30 mg/day, but their clinical courses were variable in both relapse intervals and severity. We experienced variable clinical courses of CIDP in children with respect to initial presentation, responsiveness to medical treatment, and recurrence interval.

Effect of Partial Substitution of Dietary Spray-dried Porcine Plasma or Fishmeal with Soybean and Shrimp Protein Hydrolysate on Growth Performance, Nutrient Digestibility and Serum Biochemical Parameters of Weanling Piglets

  • Sun, Zhantian;Ma, Qiugang;Li, Zhongrong;Ji, Cheng
    • Asian-Australasian Journal of Animal Sciences
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    • 제22권7호
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    • pp.1032-1037
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    • 2009
  • The present experiment was conducted to study the effects of partial replacement of spray-dried porcine protein (SDPP) or fish meal with soybean and shrimp protein hydrolysate (SSPH) on growth performance, nutrient digestibility and serum biochemical parameters in weaned pigs. Two hundred and forty 21${\pm}$2 d old pigs ((Pietrain${\times}$Duroc)${\times}$(Landrace${\times}$Large Yorkshire)) with initial weight of 6.9${\pm}$0.5 kg were randomly allocated to five dietary treatments with six replicates per treatment and eight piglets per replicate. The control diet (T1) contained 2% SDPP and 6% fishmeal, and SDPP for experimental diets T2 and T3 was replaced with 1% and 2% SSPH, respectively, on an iso-nitrogenous basis. The fishmeal for experimental diets T4 and T5 was replaced with 1% and 2% SSPH, respectively, also on an iso-nitrogenous basis. The experimental period was 21 days. The results showed that weaned piglets fed the diets containing 1% and 2% SSPH as a replacement for SDPP had similar average daily gain (ADG), average daily feed intake (ADFI), feed/gain (F/G), diarrhea rate and serum biochemical indices e.g. blood urea nitrogen (BUN), total serum protein (TP), albumin to globulin ratio (A/G), globulin (GLO), serum glucose (GLU), and immunoglobulin G (IgG) to those fed the control diet during 0-10 d and 0-21 d of the experiment. The substitution of 1% SSPH on an iso-nitrogenous basis for fish meal appeared to be beneficial for ADG (p = 0.59) and ADFI (p = 0.23) of piglets during the overall period. The digestibility of calcium was higher (p<0.01) in pigs fed diets containing SSPH than on the control diet. Addition of 1% SSPH on an iso-nitrogenous basis for fish meal could increase the digestibilities of dry matter and energy of the diet. Dietary replacement of fish meal with 1% and 2% SSPH had no effect on the concentrations of BUN, TP, A/G, GLO, GLU, and IgG. In conclusion, dietary SDPP or fish meal could partially replace SSPH without any adverse effect on growth performance, nutrient digestibility and serum biochemical parameters in weaned piglets.

Zearalenone Affects Immune-Related Parameters in Lymphoid Organs and Serum of Rats Vaccinated with Porcine Parvovirus Vaccine

  • Choi, Byung-Kook;Cho, Joon-Hyung;Jeong, Sang-Hee;Shin, Hyo-Sook;Son, Seong-Wan;Yeo, Young-Keun;Kang, Hwan-Goo
    • Toxicological Research
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    • 제28권4호
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    • pp.279-288
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    • 2012
  • Rats were administered zearalenone (ZEA) via gavage at dosages of 0, 1, 5, and 30 mg/kg for 36 days. On treatment day 8, inactivated porcine parvovirus vaccine (Vac) was injected intraperitoneally. Antibody production against porcine parvovirus was then measured as a function of ZEA treatment. Compared to the vaccine alone, ZEA treatment, with or without Vac, decreased the serum level of IgG. The level of IgM decreased in all ZEA groups at day 22, but the decrease was sustained only in the medium-dose ZEA group at day 36. The level of IgA was unchanged in the Vac only and ZEA groups at day 22, but was decreased in the 5 mg/kg ZEA plus Vac group compared to the Vac only group at day 36. The level of IgE was decreased by all doses of ZEA at day 22, but was unaffected in ZEA plus Vac groups compared to the Vac only group. The levels of IL-1 in the thymus and spleen; INF-${\gamma}$ in serum; IL-2, IL-6, and IL-10 in the thymus; and IL-10 and IFN-${\gamma}$ in the spleen decreased after ZEA administration. Furthermore, the levels of IL-$1{\beta}$ in the spleen and mesenteric lymph node, IL-$1{\beta}$ in the thymus, IL-2 in the thymus and spleen, IL-6 in the thymus, IL-10 and IFN-${\gamma}$ in the spleen, and GM-CSF and TNF-${\alpha}$ in the thymus decreased after vaccination in rats exposed to ZEA. In conclusion, these results suggest that ZEA exposure via drinking water can cause an immunosuppressive effect by decreasing immunoglobulins in serum and cytokines in lymphoid organs.