50 research outputs found
μκ°λ©΄μμ± κ±΄μ±μ μ₯λͺ¨λΈμμμ CD103+ μμ§μ μΈν¬μ λΆν¬ λ³ν
νμλ
Όλ¬Έ(μμ¬) -- μμΈλνκ΅λνμ : μκ³Όλν μνκ³Ό, 2021.8. κΉλ―ΈκΈ.λͺ©μ : μ°λ¦¬λ λ
Έν λ° μκ°λ©΄μμ± κ±΄μ±μ μ₯ λͺ¨λΈμμμ νΉμ§μ μΈ νμνμ§μΈν¬μ λΆν¬μ λν΄μ μ°κ΅¬νκ³ μ μ΄λ² μ°κ΅¬λ₯Ό κ³ν νμλ€.
λ°©λ²: λ
Έν κ΄λ ¨ 건μ±μ μ₯λͺ¨λΈλ‘ C57BL/6 (B6) μ₯λ₯Ό μ μ νμκ³ , 8μ£Όλ Ή μ₯λ₯Ό μ΄λ¦° μ₯, 20κ°μλ Ήμ λμ΄λ μ₯λ‘ μ€μ νμλ€. μκ°λ©΄μμ± κ±΄μ±μ μ₯ λͺ¨λΈλ‘ NOD.B10.H2b μ₯λ₯Ό μ¬μ© νμκ³ , 5μ£Όλ Ήμ μ΄λ¦° μ₯, 24 μ£Όλ Ήμ λμ΄λ μ₯λ‘ μ νμλ€. κ° κ΅°μ κ°λ§ μΌμ μ μ, λλ¬ΌλΆλΉλμ μΈ‘μ λ° λΉκ΅ νμκ³ , κ°λ§, λλ¬Όμ, μ₯κ°λ§ λ¦Όνμ μ νμνμ§μΈν¬λ μ μΈν¬ λΆμκΈ°λ₯Ό ν΅νμ¬ λΆμνμλ€. λν B6 μ₯μ λΆλ³μ λͺ¨μμ μ₯λ΄ λ§μ΄ν¬λ‘λ°μ΄μ΄μ ꡬμ±λ λΉκ΅ λΆμ νμλ€.
κ²°κ³Ό: λͺ¨λ κ΅°μμ λμ΄λ μ₯κ° κ±΄μ±μ μμμ΄ μ¬ν΄μ§λ κ²μ΄ κ΄μ°°λμλ€. B6 μ₯μ μμ§μ μΈν¬ λΆμμμ κ°λ§ CD11b+ μμ§μ μΈν¬κ° λμ΄λ μ₯μμ μ μνκ² μ¦κ°νμκ³ (P<0.05), μ₯κ°λ§ CD11b+ μμ§μμΈν¬μ CD103+CD11b+ μμ§μμΈν¬κ° μ μνκ² μ¦κ°νμλ€ (P<0.05).
NOD μ₯μμλ κ°λ§μ CD103+CD11b- μμ§μμΈν¬μ λλ¬Όμμ MHC-IIhi B μΈν¬κ° λ
Ένμ λ°λΌ μ μ νκ² μ¦κ°νμλ€. μ₯κ°λ§ CD103+CD11b+ μμ§μμΈν¬, CD103+CD11b- μμ§μμΈν¬μ MHC-IIhi B μΈν¬λ μ μνκ² λ
Ένμ λ°λΌ μ¦κ°ν μμμ 보μλ€. B6 μ₯μ μ₯λ΄ λ§μ΄ν¬λ‘λ°μ΄μ΄ κ΅¬μ± λΆμμμ, beta-diversity λΆμμμ genus μ species λΆμ μ μκ΅°κ°μ μ μν μ°¨μ΄λ₯Ό νμΈν μ μμλ€. λνμ μΌλ‘ λμ΄λ μ₯μμ Lachnospiraceae μ Helicobacteraceae λ₯Ό ν¬ν¨ν 9κ°μ κ· μ£Όκ° λ λ§μ΄ λΆν¬νκ³ , μ΄λ¦° μ₯μμλ Lactobacillus λ₯Ό ν¬ν¨ν 8κ°μ κ· μ£Όκ° λ λ§μ΄ λΆν¬ νμλ€.
κ²°λ‘ : μ₯ κ΄λ ¨ CD103+CD11b-μμ§μμΈν¬ λ° MHC-IIhi B μΈν¬λ μκ° λ©΄μ 건μ±μ λͺ¨λΈμμ λ§μ λΆν¬λ₯Ό νμΈ νμμ§λ§, CD103+ DCμ κ²½μ° λ
Έν κ΄λ ¨ 건μ±μμμλ νΉμ§μ μΈ λΆν¬λ₯Ό νμΈ ν μ μμλ€.Purpose : We aimed to investigate whether changes in antigen-presenting cell (APC) distributions are distinct in aging-dependent and autoimmune dry eye model.
Methods : Corneal staining and tear secretion were evaluated in 8-week- and 20-month-old C57BL/6 (B6) mice and 5-week- and 24-week-old NOD.B10.H2b mice. In the cornea, lacrimal gland (LG), and mesenteric lymph node, MHC-IIhi B cells (CD45+CD11b-CD11c-CD24+MHC-IIhi), CD11b- dendritic cells (DCs) (CD45+CD11b-CD11c+CD24+MHC-IIhi), CD11b+DCs (CD45+CD11b+CD11c+CD24+MHC-IIhi), and CD103+ DCs (CD45+CD11b+/-CD11c+CD103+MHC-IIhi) were compared between young and aged mice. Changes of fecal bacterial genomic 16S rRNA sequences were compared.
Results: Corneal staining increased, but tear secretion decreased in both aged mice (P<0.001). In aged B6 mice, the percentage of corneal CD11b+ DCs was higher (P<0.05) than that in young mice. The percentages of mesenteric CD11b+ DCs and CD103+CD11b+ DCs in the aged mice were higher than those in young mice (P<0.05). In aged NOD.B10.H2b mice, the percentages of corneal CD103+CD11b- DCs and MHC-IIhi B cells in the LG were higher than those in young mice (P<0.05). The percentages of mesenteric CD103+CD11b+ DCs, CD103+CD11b- DCs and MHC-IIhi B cells were also higher than those in young mice (P<0.05). Ξ±-diversity increased in aged B6 mice. Ξ²-diversity showed a significant difference between aged and young mice (P<0.05). In the aged B6 mice, nine taxa in the family Lachnospiraceae increased, while eight taxa in the family Lactobacillaceae decreased.
Conclusion: Gut-related CD103+CD11b- DCs and MHC-IIhi B cells may be prevalent in aged autoimmune dry eye models, while CD103+ DCs are not predominant in aging-dependent dry eye model.1. Introduction 1
2. Materials and Methods 4
3. Results 11
4. Discussion 28
References 35
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