• BMB Reports
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• 제29권2호
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• pp.127-132
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• 1996

Germinal centers (GCs) are formed in peripheral lymphoid tissues in response to protein antigens. In order to see if immunoglobulin isotype switching takes place in GC B-cells, we isolated GC B-cells (PNA positive cells) from mouse popliteal lymph nodes by a flow cytometer after the staining of lymph node cells with PNA-FITC and anti-B220-PE, and determined the expression of ${\gamma}1$ germline transcript and ${\gamma}1$ mRNA by RT-PCR. ${\gamma}1$ germline transcript and ${\gamma}1$ mRNA were amplified specifically in cDNAs from hybridoma expressing IgG1 or splenocytes stimulated LPS plus IL-4. Germinal center B-cells formed in popliteal lymph nodes of mice immunized with chicken ovalbumin were isolated 7 days after immunization. We sorted GC B-cells five times. Immunoglobulin ${\gamma}1$ germline transcripts were expressed in germinal center B-cells in three out of five sorts whereas two out of five sorts did not express ${\gamma}1$ germline transcripts in GC B-cells. The contents of GC B-cells ranged from 5 to 7% of total lymph node cells in most flow cytometric analyses but those of two sorted cells which did not express ${\gamma}1$ germline transcripts were out of normal range. These results imply that isotype switching of immunoglobulins may take place in GCs.

• Journal of Pharmaceutical Investigation
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• 제22권2호
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• pp.115-124
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• 1992

The characteristics and stabilities of phosphatidylcholine liposomes covalently coupled with immunoglobulin fragments prepared by the REV method were investigated by the dynamic light scattering, absorbance and calcein release. Using a sulfhydryl-reactive phospholipid derivative of N-[4$({\rho}-maleimido-phenyl)$ butyl] phosphatidylethanolamine (MPB-PE), Fab' antibody fragments were covalently combined with preformed large unilamellar vesicles (LUV), Coupling ratio was $250\;{\mu}g$ of $Fab'/{\mu}mol$ of phospholipid in vesicles, From dynamic light scattering, it was found that the size of the vesicles increases as the ratio of cholesterol to lipid increases, but that apparently, the size of liposomes was not sensitive to the existence of Fab' fragments. Regardless of inserting Fab' fragments, the absorbance of liposomes decreased as the amounts of bile salt (BS) added. At very low BS concentrations, BS/lipid aggregates would be formed in the outer vesicles monolayer, while, at the high BS concentrations, mixed micelles would be preferred. The vesicles incorporated with Fab' fragments, however, are more resistant to the bile salts than the MPB-PE vesicle are. The absorbance of vacant liposomes and calcein release resulted in that the Fab' vesicles and MPB-PE vesicles by the REV method are very stable, but that those by the sonication method sufferred the significant change of turbidities.

• BMB Reports
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• 제30권5호
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• pp.346-351
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• 1997

The maximum adsorption/desorption conditions and the adsorption mechanism of globular proteins to vaccine adjuvants were determined. The maximum adsorption ratio of protein to the $Al^{3+}$ content of aluminum oxyhydroxide and the optimal adsorption pH are 2:1 (${\mu}g:{\mu}g$) for bovine serum albumin (BSA) at pH 6.0 and 2.5:1 (${\mu}g:{\mu}g$) for immunoglobulin G (IgG) at pH 7.0, respectively. The maximum adsorption ratio onto aluminum phosphate gel was 1.5:1 (${\mu}g$ Protein:${\mu}g$ $Al^{3+}$) at pH 5.0 for both BSA and IgG. Adsorption of the native globular proteins, BSA and IgG, to aluminum oxyhydroxide and aluminum phosphate gel was reversible as a function of pH. Complete desorption of these proteins from aluminum phosphate gel was observed at alkaline pH, whereas only 80~90% removal from aluminum oxyhydroxide was achieved with alkaline pH and 50 mM phosphate buffer. We conclude that electrostatic and hydrogen bonding interactions between the native proteins and adjuvants are important binding mechanisms for adsorption, and that the surface charge of the protein and the colloid components control the maximum adsorption conditions.

• Journal of Dairy Science and Biotechnology
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• 제28권1호
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• pp.35-41
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• 2010

식품과민반응의 선천적 이력(natural history)과 방어의 이해는 식품 알레르기 환자의 관리에 매우 중요하다. 이러한 주제에 관하여 많은 연구내용들이 완전히 일치하지는 않지만 데이터에서 몇 가지 분명한 교훈을 얻을 수 있다. 첫째, 식품 알레르기는 매우 일반적인 것이다. 둘째, 식품 알레르기의 거의 대부분은 생후 1~2살에 시작한다. 셋째, 모든 식품 알레르기는 일반적으로 긍정적인 결과에 대한 예외가 있지만 증가하고 있는 실정이다. 넷째, 식품 알레르기는 대부분의 어린이들이 시간이 지나면서 없어지지만 일부는 호흡기 알레르기로 발달하여 종종 아토피질환의 시초가 된다. 마지막으로 적어도 몇 가지 식품 알레르기는 유아기와 어린이 시기에 주요 식품알레르겐들을 피함으로써 막을 수 있다.

• 대한한방성인병학회지
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• 제10권1호
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• pp.53-61
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• 2005

Guillain-Barre syndrome (GBS) is a group of autoimmune syndromes consisting of demyelinating and acute axonal degenerating forms of the disease. Typically, Gullain-Barre syndrome can be diagnosed from the patient's symptoms and physical examination such as the rapid onset of weakness, paralysis and loss of reflexes. In most patients, resolution is complete or near complete. Treatment consists of supportive care, ventilatory management (in about one third of patients), and specific therapy with intravenous immunoglobulin or plasmapheresis. This clinical report is about suspected acute severe Guillain-Barre syndrome patient, 61-year-old man had quadriplegia, facial palsy, dysphasia, respiratory failure. After 5 weeks of East-West integrative medicine therapy - Conventional Conservative therapy(plasmaphresis and intravenous immunoglobulin) and Korean traditional medicine(Sasang medicine and acupuncture treatment) - most symptoms improved.

• Clinical and Experimental Reproductive Medicine
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• 제20권2호
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• pp.149-156
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• 1993

Human chorionic gonadotropin(hCG) and intravenous immunoglobulin(IVIG) treatment were attempted as a novel therapeutic approach for unexplained recurrent spontaneous abortion(RSA). Forty-four and 3 women with a history of RSA were treated with hCG and IVIG, respectively, during pregnancy. Of these patients, serum blocking factor assay was performed before and after each treatment, in 15 patients; 12 cases with hCG and 3 cases with IVIG. The results were as follows: 1. Of 44 women who receive hCG during pregnancy, 24 delivered healthy infants at term, 10 patients suffered repeat abortion, and 10 women are still pregnant under 28 weeks. Over all success rate of hCG treatment was 70.6% (24/34). Although there is no statistical significance, absolute serm blocking level was decreased after treatment(N=12). 2. Of 3 women who receive IVIG during pregnancy, all 3 women are still pregnant under 28 weeks. Serum blocking level was increased after treatment, however, this increment was not statistically significant. Although no conclusion could be extracted from the patients who received IVIG, the therapeutic effect of hCG is comparable to that of the other therapeutic regimens, such as allogeneic leukocytes. It was postulated that actual etiology of unknown RSA would be classified as hormonal origin although combined etiologies are common in Korean women.

• Tuberculosis and Respiratory Diseases
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• 제76권1호
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• pp.42-45
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• 2014

An immunoglobulin G4 (IgG4)-related disease is a recently emerging entity, and a few cases of IgG4-related disease in lung and pleura have been reported. Herein, we report the case of a 74-year-old man with IgG4-related disease of lung and pleura, clinically suspicious of malignant mesothelioma. Chest computed tomography showed diffuse nodular pleural thickening, and microscopic finding disclosed diffuse thickening of visceral pleura with infiltrations of many lymphoplasma cells with increased number of IgG4-positive plasma cells and a few multinucleated giant cells. It is important for pathologists and clinicians to recognize this rare entity and its histologic finding, because it can be confused with malignant tumors on the radiologic examination although it can be treated with steroid therapy.

• Tuberculosis and Respiratory Diseases
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• 제52권6호
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• pp.651-656
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• 2002

Hyperimmunoglobulin E 증후군, 혹은 Job's 증후군은 비정상적으로 높은 Immunoglobulin E 수치와 더불어 면역기능의 이상으로 인해 반복적인 피부감염과 호흡기계 감염을 특정으로 하는 질환이다. Job's 증후군에서 나타나는 호흡기계 발현 양상은 폐렴, 기류, 기흉, 폐농양, 농흉 등 여러 가지 형태로 나타나며 각각에 대한 치료도 다양하다. 치료원칙은 감염에 관한 예방적 약물치료 및 감염균에 관한 항생제투여와 수술의 적응증이 될 때, 폐실질의 손실을 최소화하는 폐절제술을 시행하는 것이 중요하다.

• Clinical and Experimental Pediatrics
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• 제50권5호
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• pp.416-421
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• 2007

Many previous studies have proved that human allergic disease resulted from the formation of antibodies belonging to a unique immunoglobulin isotype termed immunoglobulin E (IgE). Most of IgE-producing plasma cells are found in the lymphoid tissue associated with the gastrointestinal and respiratory tracts. IgE may be found free in the mucosal secretions of these tissues, bound to local mast cells, or distributed by the systemic circulation to mast cells and basophils throughout the body. Total serum IgE concentrations tend to be higher in allergic adults and children compared with non-allergic individuals, but the value of total serum IgE as a screening test for allergic disease is limited. Total serum IgE levels are related to the probability of an individual having detectable allergen-specific IgE. Allergen-specific IgE concentrations vary with a person's age, the degree and duration of the recent allergen or cross-reactive allergen exposure. The value of quantitative assays for allergen-specific IgE has been suggested in recent studies. Serum IgE increases in many non-allergic diseases, including infectious and parasitic diseases. The IgE changes appear to be specific to the infectious agents, whereas non-specific in other diseases. The increased serum IgE in some of these conditions probably results from alterations in immune function. This review summarizes the clinical significance of total and allergen-specific IgE examinations in allergic diseases.

• Journal of Yeungnam Medical Science
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• 제10권2호
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• pp.512-517
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• 1993

임신전 만성 ITP로 진단되어 prednisolone 경구투여와 vincristine 정맥주사로 치료후에 추적관찰중 환자가 임신하였으나 조기진통으로 질식 둔위분만했으며 증세가 재발하여 prednisolone, 감마글로불린을 투여하였으나 호전이 없이 비장적출술을 시행한 임신과 동반된 특발성 혈소판 감소성 자반증 1례를 경험하였기에 문헌고찰과 함께 보고하는 바이다.