| Project/Area Number |
18390240
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Respiratory organ internal medicine
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| Research Institution | Niigata University |
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Principal Investigator |
NAKATA Koh Niigata University, Medical and Dental Hospital, professor (80207802)
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| Co-Investigator(Kenkyū-buntansha) |
INOUE Yoshikazu Niigata University, International Medical Center of Japan, 研究部長 (90240895)
NAKAGAKI Kazuhide Nippon Veterinary and Life Science University, 獣医学部, associate professor (90143635)
TAZAWA Ryushi Niigata University, Medical and Dental Hospital, Lecturer (70301041)
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| Project Period (FY) |
2006 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥16,940,000 (Direct Cost: ¥15,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2007: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2006: ¥12,000,000 (Direct Cost: ¥12,000,000)
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| Keywords | pulmonary alveolar proteinosis / granulocyte macrophage colony stimulating factor / alveolar macrophage / lung surfactant / bronchoalveolar lavage / autoantibody / cytokine / autoimmune disease / ケモカイン / 原発性肺胞蛋白症 / 免疫複合体 |
|---|
| Research Abstract |
Recent studies have revealed that neutrophils from PAP patients had reduced basal functions such as phagocytosis, cell-adhesion, H_2O_2 production, and microbial killing (Uchida, et. Al.. NEJM.2007). In contrast, we found that some subsets of peripheral blood T and B cells were activated or excessively matured compared to normal controls. In CD4^+ cells, the number of naive T cells was reduced and the effecter-memory/naive ratio was up-regulated. Interestingly, small amount of CD4^+ cells were proliferating ex vivo without any stimulation. In B cells, CD38^+ activated cells were increased in both naive and memory B cell subset, whereas the expression of CD19 was reduced compared to the controls. Cells expressing CD138, a plasma cell marker, were significantly increased. Importantly, GM-CSF autoantibody was detected in the culture supernatants of peripheral blood mononuclear cells after 2 days incubation without any stimulation. These results suggested that some subsets of T and B cells were driven to be matured/activated and possibly promoted to produce the autoantibody.
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