• Molecules and Cells
• /
• 제44권5호
• /
• pp.301-309
• /
• 2021

Innate lymphoid cells (ILCs) are the most recently discovered family of innate immune cells. ILCs can be categorized into three groups on the basis of the transcription factors that direct their functions and the cytokines they produce. Notably, these functions parallel the effector functions of T lymphocytes. ILCs play a frontline role in host defense and tissue homeostasis by responding rapidly to environmental factors, conducting effector responses in a tissue-specific manner, and interacting with hematopoietic and non-hematopoietic cells throughout the body. Moreover, recent studies reveal that ILCs are involved in development of various inflammatory diseases, such as respiratory diseases, autoimmune diseases, or cancer. In this review, we discuss the recent findings regarding the biology of ILCs in health and inflammatory diseases.

• Journal of Genetic Medicine
• /
• 제19권2호
• /
• pp.57-62
• /
• 2022

Systemic autoinflammatory diseases (SAIDs) are characterized by unprovoked inflammatory episodes such as recurrent/periodic fever, serositis, skin lesions, abdominal symptoms, arthritis/arthralgia, and central nervous system involvement. Genetic diagnosis of SAIDs has been challenging because disease manifestations overlap among themselves and with other immunological disease categories, such as infection and autoimmune diseases. However, the advent of next-generation sequencing (NGS) technologies and expanding knowledge about the innate immunity and inflammation have made the routine genetic diagnosis of SAIDs possible. Here, we review the recurrent/periodic fevers, other recently identified autoinflammatory diseases, and type I interferonopathies, and discuss the clinical usefulness of NGS targeted sequencing for SAIDs, and recent advance of understandings for this heterogeneous disease group as for underlying primary immunodeficiency.

• IMMUNE NETWORK
• /
• 제7권1호
• /
• pp.10-17
• /
• 2007

Autoimmune arthritis, such as rheumatoid arthritis (RA), is a chronic inflammatory disorder that primarily affects the joints and then results in their progressive destruction. Effector Th cells have been classified as Th1 and Th2 subsets based on their cytokine expression profiles and immune regulatory function. Another subset of T cells termed Th17 was recendy discovered and known to selectively produce IL-17. Also, Th17 was shown to be generated by TGF${\beta}$ and IL-6 and maintained by IL-23. IL-17 is a proinflammatory cytokine that is considered to involve the development of various inflammatory autoimmune diseases such as RA, asthma, lupus, and allograft rejection. IL-17 is present in the sera, synovial fluids and synovial biopsies of most RA patient. IL-17 activates RA synovial fibroblasts to synthesize IL-6, IL-8 and VEGF via PI3K/Akt and NF-${\kappa}B$ dependent pathway. IL-17 increases IL-6 production, collagen destruction and collagen synthesis. In addition, it not only causes bone resorption but also increases osteoclastogenesis and fetal cartilage destruction. Inhibition of the IL-17 production may contribute a novel therapeutic approach along with potent anti-inflammatory effect and with less immunosuppressive effect on host defenses.

• 척추신경추나의학회지
• /
• 제13권2호
• /
• pp.109-125
• /
• 2018

Objectives : It is difficult to make accurate diagnosis of musculoskeletal disease because of its multiple, subjective and non-specific symptoms. It is possible to reduce errors of differential diagnosis through detailed history taking and physical examination in parallel with laboratory tests based on clinical decision. Methods : Korean and foreign on-line databases(Pubmed, Cochran Library, NDSL, KISS and OASIS) were researched for articles discussing laboratory tests in musculoskeletal diseases. Results : Laboratory tests could be applied usefully for various musculoskeletal diseases, In this review, available laboratory components in these musculoskeletal diseases are summarized, and then significance and usefulness of disease-specific laboratory examination are described. Conclusions : When examining musculoskeletal patients, it needs to accurate differential diagnosis by full interview and physical examination, to select required tests by understanding laboratory tests thoroughly, and to judge the prognosis precisely.

• Pediatric Gastroenterology, Hepatology & Nutrition
• /
• 제7권2호
• /
• pp.186-196
• /
• 2004

목적: 자가면역성 간염은 원인 불명의 진행성 염증성 간질환으로 혈중 자가항체의 출현과 고감마글로불린혈증, 그리고 조직학적으로 문맥주위 염증을 특징으로 한다. 소아에서는 산발적인 증례 보고가 있었으나 국내에서는 아직까지 체계적인 연구가 없었다. 이에 저자들은 소아에서 자가면역성 간염의 임상적, 조직학적 소견과 치료 경과 및 예후에 대해 알아보고자 본 연구를 시행하였다. 방법: 1990년부터 2004년까지 서울대학교 어린이병원에서 자가면역성 간염으로 진단되었던 14명의 환자들의 임상적 특징, 혈액 검사 소견 및 간 조직 검사 소견을 분석하였다. 또한 이들 환자들에게 시행된 치료 약제 및 치료에의 반응, 그리고 재발 여부 등 치료 경과를 조사하였다. 결과: 대상 환자 14명의 진단시 연령은 평균 $9{\pm}3$세였다. 여자가 11명으로 전체의 78%를 차지하였고, 6명에서 급성 발병을 보였다. 임상 증상으로는 황달이 11명에서 호소하여 가장 흔하였으며, 이 외에도 피로감, 식욕부진, 진한색 소변, 상복부 불쾌감, 잦은 코피, 오심, 소양감 및 설사가 동반되었다. 신체 검진 소견에서는 간비종대가 흔하게 나타났다. 6명의 환자에서 다른 자가면역성 질환이 동반되었고 1명에서는 일등친 중 그레이브스병의 병력이 있었다. 혈중 자가항체 검사 결과 13명에서 항핵 항체가 양성으로 나왔으며 항핵 항체가 음성으로 나왔던 1명은 항평활근 항체가 양성으로 나와 대상 환자 모두가 제1형 자가면역성 간염에 해당되었다. 7명에서는 항핵 항체와 항평활근 항체가 모두 양성으로 나왔다. 혈청 IgG는 평균 $2971{\pm}2147mg/dL$였고, AST는 평균 $469{\pm}402\;U/L$, 총 빌리루빈은 평균 $4.9{\pm}5.5mg/dL$였다. 간 조직 검사 소견으로는 문맥 주위의 염증(10명), 간세포의 로제트 형성(3명), 소엽의 염증(6명)이 흔하게 나타났고 2명에서는 진단 당시 이미 조직학적으로 간경변이 동반되었다. 대상 환자 14명 중 6명은 UDCA만 사용하며 관찰 중 간수치가 호전되었고 나머지 8명에게는 스테로이드 치료가 시행되었다. 이중 7명이 초기 스테로이드 치료시 관해를 보였으나 스테로이드를 감량하거나 중지시 재발하였다. 스테로이드 재치료가 시행되었고 3명은 스테로이드 감량 중 관해 유지 중이고 2명은 azathioprine으로 관해 유지 중이다. 결론: 자가 면역성 간염은 원인 불명의 소아 만성 간 질환의 원인 중 하나이며, 적절한 치료로 예후가 개선될 수 있는 간질환이다. 그러므로 특히 여아에서 고감마글로블린혈증을 보이거나 다른 자가면역성 질환이 동반될 경우 자가면역성 간염을 의심하여 자가항체 선별 검사를 시행하고 적절한 진단 및 치료를 시행하는 것이 중요하리라고 생각된다.

• Tuberculosis and Respiratory Diseases
• /
• 제72권3호
• /
• pp.318-322
• /
• 2012

Sarcoidosis is an inflammatory disease involving multiple-organs with an unknown cause. The new onset of sarcoidosis associated with therapeutic agents has been observed in 3 clinical settings; tumor necrosis factor antagonists in autoimmune rheumatologic diseases, interferon alpha with or without ribavirin in patients with chronic hepatitis C or melanoma, and antineoplastic agent-associated sarcoidosis in patients with hematologic malignancies. Here, we report a female patient who developed sarcoidosis after capecitabine treatment as an adjuvant chemotherapy for sigmoid colon cancer. To our knowledge, this is the first report of a capecitabine-induced sarcoidosis.

• Clinical and Experimental Pediatrics
• /
• 제53권2호
• /
• pp.136-145
• /
• 2010

Natural killer T (NKT) cell is a special type of T lymphocytes that has both receptor of natural killer (NK) cell (NK1.1, CD161c) and T cell (TCR) and express a conserved or invariant T cell receptor called $V{\alpha}14J{\alpha}18$ in mice or Va24 in humans. Invariant NKT (iNKT) cell recognizes lipid antigen presented by CD1d molecules. Marine-sponge-derived glycolipid, ${\alpha}-galactosylceremide$ (${\alpha}-GalCer$), binds CD1d at the cell surface of antigen-presenting cells and is presented to iNKT cells. Within hours, iNKT cells become activated and start to secrete Interleukin-4 and $interferon-{\gamma}$. NKT cell prevents autoimmune diseases, such as type 1 diabetes, experimental allergic encephalomyelitis, systemic lupus erythematous, inflammatory colitis, and Graves' thyroiditis, by activation with ${\alpha}-GalCer$. In addition, NKT cell is associated with infectious diseases by mycobacteria, leshmania, and virus. Moreover NKT cell is associated with asthma, especially CD4+ iNKT cells. In this review, I will discuss the characteristics of NKT cell and the association with inflammatory diseases, especially asthma.

• Molecules and Cells
• /
• 제46권2호
• /
• pp.120-129
• /
• 2023

Recent technical advances have enabled unbiased transcriptomic and epigenetic analysis of each cell, known as "single-cell analysis". Single-cell analysis has a variety of technical approaches to investigate the state of each cell, including mRNA levels (transcriptome), the immune repertoire (immune repertoire analysis), cell surface proteins (surface proteome analysis), chromatin accessibility (epigenome), and accordance with genome variants (eQTLs; expression quantitative trait loci). As an effective tool for investigating robust immune responses in coronavirus disease 2019 (COVID-19), many researchers performed single-cell analysis to capture the diverse, unbiased immune cell activation and differentiation. Despite challenges elucidating the complicated immune microenvironments of chronic inflammatory diseases using existing experimental methods, it is now possible to capture the simultaneous immune features of different cell types across inflamed tissues using various single-cell tools. In this review, we introduce patient-based and experimental mouse model research utilizing single-cell analyses in the field of chronic inflammatory diseases, as well as multi-organ atlas targeting immune cells.

• Journal of Rheumatic Diseases
• /
• 제24권1호
• /
• pp.14-20
• /
• 2017

Interleukin-32 (IL-32), a recently identified pro-inflammatory cytokine, is involved in the pathogenesis and progression of infections, cancer, chronic inflammation, and autoimmune disease. IL-32γ is the most active isoform in cell death and cell activation among nine distinct isoforms of IL-32. IL-32γ potentiates both osteogenic and osteoclastogenic capacities, and is critical in the coupling of bone resorption and bone formation for maintenance of bone homeostasis. IL-32γ is strongly associated with inflammatory bone disorders such as rheumatoid arthritis, ankylosing spondylitis, and osteoporosis. In this review, we summarize current research on the role of IL-32γ in inflammatory bone disorders, highlighting this cytokine as a novel target for prognostic marker and control of these diseases.

• 대한약학회:학술대회논문집
• /
• 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
• /
• pp.77-77
• /
• 2003

p43 is a protein with complex biological activities. It is first found as a protein associated with macromolecular tRNA synthetase complex. Within this complex, p43 specifically interacts with arginyl-tRNA synthetase to help the substrate tRNA binding to the enzyme. It is also necessary for the cellular stability of arginyl-tRNA synthetase and the molecular association of a few complex-forming tRNA synthetases. (omitted)