• Journal of Chest Surgery
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• 제19권1호
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• pp.148-152
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• 1986

Solitary plasmacytoma of the lung are extremely rare, and are sorts of plasma cell dyscrasia which are characterized by the elaboration of excessive amount of immunoglobulin or their constituent units. We experienced one case of plasmacytoma on the left lower lobe which was treated by left pneumonectomy. It was proven that the plasmacytoma produced immunoglobulin M and kappa chain by immunofluorescent technique. During the follow up period, 2 1/2 years after surgical removal of tumor mass, there were no local recurrence and dissemination.

• 한국자기공명학회논문지
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• 제14권2호
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• pp.127-133
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• 2010

Redox-dependent conformational change of human 8-kDa Dynein light chain (LC8) plays important role in regulating NF-${\kappa}B$ signaling pathway. In this study we characterized the structural states of the oxidized and reduced forms of LC8 by using NMR spectroscopy. The $^1H-^{15}N$ 2D HSQC spectra of oxidized LC8 indicated that no significant change in tertiary structure of LC8 occurred upon oxidation. The chemical shift perturbations of LC8 upon oxidation suggest a redox-dependent quaternary structural change.

• 대한수의학회지
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• 제39권4호
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• pp.806-810
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• 1999

A multiplex-polymerase chain reaction (PCR) assay was used to detect staphylococcal enterotoxin production by 12 strains of Staphylococcus aureus isolated from clinical specimens. To evaluate the efficacy and/or sensitivity of this method, the results were compared to those obtained with the reversed passive latex agglutination kit (SET-RPLA, Denka Seiken, Japan). Of 10 strains positive by PCR were positive by RPLA but two strains, representing high sensitivity of the former method. Enterotoxin B was the most prevalent by the two methods. The kappa index between the two methods was 0.826, indicating a higher agreement and fully reliable for use. These results would suggest that sensitive, inexpensive, and relatively rapid multiplex-PCR technique may be an effective means for the detection of staphylococcal enterotoxin genes as an alternative to traditional methods such as kits or immunological methods, which depend upon the amount of enterotoxin produced.

• IMMUNE NETWORK
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• 제3권4호
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• pp.281-286
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• 2003

Background: Hepatitis B virus (HBV) infection is one of the worldwide public health problem affecting about 300 million people. The envelope protein of HBV consists of three components known as preS1, preS2, and S antigen. According to the recent study, anti-HBs Ab showed effective neutralization ability against HBV from chronic hepatitis B and liver transplant patients, suggesting the possible development of therapeutic antibody. Methods: Spleen cells immunized with S antigen of HBV were fused with myeloma cell line to obtain HBsAg specific monoclonal antibodies. High affinity antibodies against HBsAg (adr, ad and ay type) were selected by competitive ELISA method. Nucleotide sequence of the variable regions of monoclonal antibodies was analyzed by RT-PCR followed by conventional sequencing method. Results: We produced 14 murine monoclonal antibodies which recognize S antigen of HBV. Two of them, A9-11 and C6-9 showed the highest affinity. The sequence analysis of A9-11 revealed that variable regions of the heavy chain and light chains are members of mouse heavy chain I (B) and light chain lambda 1, respectively. Likewise, the sequence analysis of C6-9 revealed that variable regions of the heavy chain and light chains are members of mouse heavy chain II (B) and light chain kappa 1, respectively. Neutralization assay showed that A9-11 and C6-9 effectively neutralize the HBV infection. Conclusion: These results suggest that A9-11 and C6-9 mouse monoclonal antibodies can be used for the development of therapeutic antibody for HBV infection.

• 농업과학연구
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• 제25권2호
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• pp.216-224
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• 1998

본 연구는 축협중앙회 한우개량부에서 사육 중인 한우 암소 253두와 축산기술연구소에서 사육 중인 Holstein 113두의 혈액으로 부터 genomic DNA를 추출하고, PCR-RFLP기법에 의해 ${\beta}$-lactoglobulin과 ${\kappa}$-casein 유전자좌위의 유전적 다형을 분석하여 한우와 유우 집단에 대한 이들 유전자의 유전적 구조를 분석함으로써 한우와 유우 개량을 위한 기초 및 응용자료를 제공하고자 실시하였던 바 얻어진 결과를 요약하면 다음과 같다. 1. 한우와 Holstein종의 genomic DNA로 부터 PCR기법을 이용하여 ${\beta}$-lactoglobulin 과 ${\kappa}$-casem의 유전자좌를 증폭한 결과 각각 530bp와 262bp의 단편이 증폭되었음을 확인하였다. 2. ${\beta}$-lactoglobulin 증폭 산물에 대한 Hae III 제한효소의 처리결과, ${\beta}$-lactoglobulin AA형은 153bp와 109bp의 단편을, AB형은 153bp, 109bp, 79bp 및 74bp의 단편을, 그리고 BB형은 109bp, 79bp 및 74bp의 단편을 나타내었다. 3. ${\kappa}$-casein 유전자좌의 증폭산물에 대한 Taq I의 제한효소 처리결과, ${\kappa}$-casein AA형은 530bp의 단편을, AB형은 530bp, 344bp 및 186b의 단편을, 그리고 BB형은 344bp 및 186mp의 단편을 나타내었다. 4. ${\beta}$-lactoglobulin의 유전자형 및 유전자 빈도에 있어서, 한우의 ${\beta}$-lactoglobulin AA, AB 및 BB 유전자형 의 빈도는 각각 6.72, 26.09 및 67.19%이었으며, ${\beta}$-lactoglobulin A 및 B 유전자 빈도는 각각 0.197 및 0.803이었고, Holstein종의 ${\beta}$-lactoglobulin AA, AB 및 BB 유전자형 빈도는 각각 35.40, 56.64 및 7.96%이었으며, ${\beta}$-lactoglobulin A 및 B 유전자 빈도는 각각 0.637 및 0.363이었다. 5. ${\kappa}$-casein의 유전자형 및 유전자 빈도에 있어서, 한우의 ${\kappa}$-casein AA, AB 및 BB 유전자형의 빈도는 각각 46.25, 39.13 및 14.62%이었으며, K-casein A 및 B 유전자 빈도는 각각 0.658 및 0.342이었고, Holstein종의 ${\kappa}$-casein AA, AB 및 BB유전자형 빈도는 각각 60.18, 38.94 및 0.88%이었고, ${\kappa}$-casein A 및 B 유전자 빈도는 각각 0.796 및 0.204 이었다. 6. 이상의 결과로써 ${\beta}$-lactoglobulin과 ${\kappa}$-casein의 유전자 빈도는 한우에서 ${\beta}$-lactoglobulin A 및 B 대립 유전자 빈도는 각각 0.197 및 0.803이었고 ${\kappa}$-casein A 및 B 대립유전자 빈도는 각각 0.658 및 0.342이었다. 그러나 Holstein 종에서는 ${\beta}$-lactoglobulin A 및 B 대립 유전자 빈도는 0.637 및 0.363이었고, ${\kappa}$-casein A 및 B 대립유전자 빈도는 각각 0.796 및 0.204이었다.

• 대한약침학회지
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• 제18권3호
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• pp.32-41
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• 2015

Objectives: Condurango (Gonolobus condurango) extract is used by complementary and alternative medicine (CAM) practitioners as a traditional medicine, including homeopathy, mainly for the treatment of syphilis. Condurango bark extract is also known to reduce tumor volume, but the underlying molecular mechanisms still remain unclear. Methods: Using a cervical cancer cell line (HeLa) as our model, the molecular events behind condurango extract's (CE's) anticancer effect were investigated by using flow cytometry, immunoblotting and reverse transcriptase-polymerase chain reaction (RT-PCR). Other included cell types were prostate cancer cells (PC3), transformed liver cells (WRL-68), and peripheral blood mononuclear cells (PBMCs). Results: Condurango extract (CE) was found to be cytotoxic against target cells, and this was significantly deactivated in the presence of N-acetyl cysteine (NAC), a scavenger of reactive oxygen species (ROS), suggesting that its action could be mediated through ROS generation. CE caused an increase in the HeLa cell population containing deoxyribonucleic acid (DNA) damage at the G zero/Growth 1 (G0/G1) stage. Further, CE increased the tumor necrosis factor alpha ($TNF-{\alpha}$) and the fas receptor (FasR) levels both at the ribonucleic acid (RNA) and the protein levels, indicating that CE might have a cytotoxic mechanism of action. CE also triggered a sharp decrease in the expression of nuclear factor kappa-light-chain-enhancer of activated B cells ($NF-{\kappa}B$) both at the RNA and the protein levels, a possible route to attenuation of B-cell lymphoma 2 (Bcl-2), and caused an opening of the mitochondrial membrane's permeability transition (MPT) pores, thus enhancing caspase activities. Conclusion: Overall, our results suggest possible pathways for CE mediated cytotoxicity in model cancer cells.

• 대한임상검사과학회지
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• 제41권4호
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• pp.173-179
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• 2009

The analysis of serum free light chains (sFLCs) can improve the diagnosis and monitoring of multiple myeloma and other plasma cell dyscrasias. As with other immunoassays, sFLCstests are subject to potential antigen excess and heterophilic antibody interference. We describe 9 cases of sFLCs antigen excess in patients with multiple myeloma using the FreeliteTM Human Kappa and Lambda Free Kits (The Binding Site ltd., Birmingham, UK) and the Hitachi7600 P module turbidimetric system. A total of 1,247 consecutive samples from 250 patients with multiple myeloma were assayed for sFLCs from April to September, 2009. The samples were assayed using an initial dilution of 1 :5and subsequent dilutions of 1 :50 and 1: 100. The same samples were analyzed for the presence of monoclonal gammopathies using serum protein electrophoresis (SPE) and immunofixation electrophoresis (IFE). There were 9 samples (0.72%) of antigen excess with 3 cases of kappa (0.24%) and 6 cases of lambda (0.48%). These cases represents an example of antigen excess or "hook effect" using the serum free light chain assays and mandates high level of attention to falsely low sFLC levels due to antigen excess, especially when it is disaccordant to other assay results or clinical manifestations.

• 대한임상검사과학회지
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• 제52권4호
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• pp.389-397
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• 2020

Microglial cells function as major immune cells in the brain, playing an important role in the protection and damage of neurons. BV2 microglia, activated by drug stimulation, secrete inflammatory cytokines by activating the nuclear factor kappa-light-chain-enhancer of the activated B cells pathway and are involved in neuroinflammatory and immune responses. The overactivation of microglia by stimuli can cause neuronal damage, leading to brain disease. Noni, a natural product, reduces the activity of microglia to prevent neuronal damage and is a potential natural medicine because it exerts excellent regeneration and anti-inflammatory effects on damaged cells. In this study, when noni was used to treat BV2 cells stimulated by the anti-cancer drug doxorubicin, it reduced the release of pro-inflammatory cytokines from BV2. On the other hand, neuronal damage is a side effect of doxorubicin. Therefore, the cytokines released from doxorubicin-stimulated BV2 cells treated with noni had a positive effect on the neuronal viability compared to those released from doxorubicin-stimulated BV2 cells not treated with Noni. Thus, Noni increases neuronal viability. These results suggest that noni inhibits the release of cytokines by regulating the nuclear factor kappa-light-chain-enhancer of the activated B cells pathway of BV2, thereby inhibiting neuronal damage.

• Journal of Veterinary Science
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• 제23권4호
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• pp.47.1-47.11
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• 2022

Background: In lipopolysaccharide-induced RAW264.7 cells, Aster tataricus (AT) inhibits the nuclear factor kappa-light-chain-enhancer of activated B cells and MAPKs pathways and critical pathways of osteoclast development and bone resorption. Objectives: This study examined how aster saponin A2 (AS-A2) isolated from AT affects the processes and function of osteoclastogenesis induced by receptor activator of nuclear factor kappa-B ligand (RANKL) in RAW264.7 cells and bone marrow macrophages (BMMs). Methods: The cell viability, tartrate-resistant acid phosphatase staining, pit formation assay, polymerase chain reaction, and western blot were carried out to determine the effects of AS-A2 on osteoclastogenesis. Results: In RAW264.7 and BMMs, AS-A2 decreased RANKL-initiated osteoclast differentiation in a concentration-dependent manner. In AS-A2-treated cells, the phosphorylation of ERK1/2, JNK, and p38 protein expression were reduced considerably compared to the control cells. In RAW264.7 cells, AS-A2 suppressed the RANKL-induced activation of osteoclast-related genes. During osteoclast differentiation, AS-A2 suppressed the transcriptional and translational expression of NFATc1 and c-Fos. AS-A2 inhibited osteoclast development, reducing the size of the bone resorption pit area. Conclusion: AS-A2 isolated from AT appears to be a viable therapeutic therapy for osteolytic illnesses, such as osteoporosis, Paget's disease, and osteogenesis imperfecta.

• 한국축산식품학회지
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• 제33권4호
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• pp.542-548
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• 2013

살균한 원유에 지방분해효소와 단백질 분해효소활성이 가장 높게 나타났던 균주를 접종하고 저장하면서 내냉성미생물이 생성하는 효소가 원유의 품질에 미치는 영향을 조사하였다. 지방분해효소활성이 높은 Acinetobacter genomospecies 10은 냉장저장기간 중 총 고형분과 유지방의 함량에 영향을 미치지 않았고, 지방의 분해는 냉장보관 14일째에 대조구와 비교하여 2.6배 이상의 유리지방산을 생성하였다. 생성된 지방산의 조성은 short chain free fatty acid(SCFFA), middle chain free fatty acid(MCFFA) 및 long chain free fatty acid(LCFFA)를 모두 생성하였으며, 특히 SCFFA와 MCFFA의 증가율이 높았다. 단백질 분해효소활성이 높은 Serratia liquefaciens은 원유의 총 고형분과 유단백질 함량에 영향을 미치지 않았고, 단백질 조성의 변화는 냉장저장기간 동안 케이신의 함량이 서서히 감소하다가 10일째부터 $\kappa$-케이신의 함량이 현저히 감소하였다. 유리아미노산은 대조구와 비교하여 냉장저장 14일째 2.8배 이상 생성되었으며 특히 소수성 아미노산으로 쓴맛을 내는 leucin, valine 등의 함량이 급격히 증가하였다.