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Imai Y, Nagai M, Kusakabe M, Yasuda K, Nakanishi K, Yoshimoto T, Yamanishi K. 902 Ablation of basophils reduces ILC2-dependent atopic dermatitis-like inflammation in mice overexpressing interleukin-33 in the skin. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Nagai M, Dote K, Kato M, Oda N. Atrial fibrillation after acute intracerebral hemorrhage: how would the insular cortex damage interact? Eur J Neurol 2018; 25:e58. [DOI: 10.1111/ene.13605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 02/07/2018] [Indexed: 11/29/2022]
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Choi J, Génova-Santos R, Hattori M, Hazumi M, Ishitsuka H, Kanno F, Karatsu K, Kiuchi K, Koyano R, Kutsuma H, Lee K, Mima S, Minowa M, Nagai M, Nagasaki T, Naruse M, Oguri S, Okada T, Otani C, Rebolo R, Rubiño-Martín J, Sekimoto Y, Suzuki J, Taino T, Tajima O, Tomita N, Uchida T, Won E, Yoshida M. Status of the GroundBIRD Telescope. EPJ WEB OF CONFERENCES 2018. [DOI: 10.1051/epjconf/201816801014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Our understanding of physics at very early Universe, as early as 10−35 s after the Big Bang, relies on the scenario known as the inflationary cosmology. Inflation predicts a particular polarization pattern in the cosmic microwave background, known as the B-mode yet the strength of such polarization pattern is extremely weak. To search for the B-mode of the polarization in the cosmic microwave background, we are constructing an off-axis rotating telescope to mitigate systematic effects as well as to maximize the sky coverage of the observation. We will discuss the present status of the GroundBIRD telescope.
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Satoh H, Ohira T, Nagai M, Hosoya M, Sakai A, Yasumura S, Ohtsuru A, Kawasaki Y, Suzuki H, Takahashi A, Sugiura Y, Shishido H, Hayashi Y, Takahashi H, Kobashi G, Ozasa K, Hashimoto S, Ohto H, Abe M, Kamiya K. Evacuation is a risk factor for diabetes development among evacuees of the Great East Japan earthquake: A 4-year follow-up of the Fukushima Health Management Survey. DIABETES & METABOLISM 2017; 45:312-315. [PMID: 29097002 DOI: 10.1016/j.diabet.2017.09.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 09/20/2017] [Accepted: 09/25/2017] [Indexed: 12/17/2022]
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Matsumoto M, Awano H, Nagai M, Shirakawa T, Iijima K, Matsuo M. Urinary excretion of 8-OHdG, a biomarker of oxidative DNA damage, increases with age in DMD patients. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Iwaki H, Kannnou M, Kubo M, Miyaue N, Tada S, Rina A, Tsujii T, Yabe H, Nishikawa N, Nagai M, Nomoto M. The association between Parkinson's disease and the serum levels of nutritional factors: A cross-sectional study with patient and spouse pairs. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ando R, Yamanishi Y, Tada S, Miyaue N, Yabe H, Nishikawa N, Nomoto M, Nagai M. Evaluation of correlation between the thickness of rectus abdominis muscle and respiratory function in patients with amyotrophic lateral sclerosis using ultrasound imaging. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Obinata Y, Iwashita Y, Nagai M, Hattori A, Eshima K, Obata F, Okano H, Ohta E. Generation of a mouse model of familial Parkinson’s disease bearing patient iPSC-derived transplanted neurospheres. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Nagai M, Kawanami A, Yanagida A, Nishiyama K. Correlation of the phosphorylated TDP-43 pathology in the hippocampus and dementia of ALS patients. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Nagai M, Dote K, Kato M, Sasaki S, Oda N, Kagawa E, Nakano Y, Yamane A, Higashihara T, Miyauchi S, Tsuchiya A. P3442Cognitive impairment: a mediator for the relationship of visit-to-visit blood pressure variability and long sleep duration with cardiovascular death in the elderly. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Miyauchi S, Nagai M, Dote K, Kato M, Sasaki S, Oda N, Kagawa E, Nakano Y. P3557In-hospital blood pressure variability and arterial stiffness: associations with coronary calcification in patients with acute myocardial infarction. Data from optical frequency domain imaging study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Higashihara T, Dote K, Kato M, Sasaki S, Oda N, Kagawa E, Nakano Y, Nagai M, Yamane A, Miyauchi S, Tsuchiya A. P4644Myocardial wash grade: a novel index for evaluating the quality of reperfusion therapy in acute myocardial infarction. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Miyauchi S, Kato M, Dote K, Oda N, Kagawa E, Nakano Y, Nagai M. P5558Impact of coronary calcification at culprit lesion of STEMI: Optical coherence tomography study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kagawa E, Dote K, Kato M, Sasaki S, Oda N, Nakano Y, Nagai M, Higashihara T, Miyauchi S, Tsuchiya A. P2777Resuscitation duration and initial recorded rhythms in extracorporeal cardiopulmonary resuscitation. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Tsuchiya A, Nagai M, Dote K, Wakabayashi M, Nakamura K, Katou M, Sasaki S, Oda N, Kagawa E, Nakano Y, Yamane A, Higashihara T. P3441The uric acid paradox for cognitive dysfunction in the elderly patients with heart failure: nutritional status as a significant moderator? Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Nagai M, Dote K, Kato M, Sasaki S, Oda N. Insular cortex and QT correction interval: an effect of hemispheric lateralization? Eur J Neurol 2017. [DOI: 10.1111/ene.13333] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Iijima H, Ito A, Nagai M, Tajino J, Yamaguchi S, Kiyan W, Nakahata A, Zhang J, Wang T, Aoyama T, Nishitani K, Kuroki H. Physiological exercise loading suppresses post-traumatic osteoarthritis progression via an increase in bone morphogenetic proteins expression in an experimental rat knee model. Osteoarthritis Cartilage 2017; 25:964-975. [PMID: 27965139 DOI: 10.1016/j.joca.2016.12.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Revised: 11/01/2016] [Accepted: 12/06/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To evaluate the dose-response relationship of exercise loading in the cartilage-subchondral bone (SB) unit in surgically-induced post-traumatic osteoarthritis (PTOA) of the knee. DESIGN Destabilized medial meniscus (DMM) surgery was performed on the right knee of 12-week-old male Wistar rats, and sham surgery was performed on the contralateral knee. Four weeks after the surgery, the animals were subjected to moderate (12 m/min) or intense (21 m/min) treadmill exercises for 30 min/day, 5 days/week for 4 weeks. PTOA development in articular cartilage and SB was examined using histological and immunohistochemical analyses, micro-computed tomography (micro-CT) analysis, and biomechanical testing at 8 weeks after surgery. Gremlin-1 was injected to determine the role of bone morphogenetic protein (BMP) signaling on PTOA development following moderate exercise. RESULTS Moderate exercise increased BMP-2, BMP-4, BMP-6, BMP receptor 2, pSmad-5, and inhibitor of DNA binding protein-1 expression in the superficial zone chondrocytes and suppressed cartilage degeneration, osteophyte growth, SB damage, and osteoclast-mediated SB resorption. However, intense exercise had little effect on BMP expression and even caused progression of these osteoarthritis (OA) changes. Gremlin-1 injection following moderate exercise caused progression of the PTOA development down to the level of the non-exercise DMM-operated knee. CONCLUSIONS Exercise regulated cartilage-SB PTOA development in DMM-operated knees in a dose-dependent manner. Our findings shed light on the important role of BMP expression in superficial zone chondrocytes in attenuation of PTOA development following physiological exercise loading. Further studies to support a mechanism by which BMPs would be beneficial in preventing PTOA progression are warranted.
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Kawaguchi Y, Nomura Y, Nagai M, Koike D, Sakuraoka Y, Ishida T, Ishizawa T, Kokudo N, Tanaka N. Liver transection using indocyanine green fluorescence imaging and hepatic vein clamping. Br J Surg 2017; 104:898-906. [PMID: 28239843 DOI: 10.1002/bjs.10499] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 12/02/2016] [Accepted: 01/04/2017] [Indexed: 12/15/2022]
Abstract
BACKGROUND Three-dimensional (3D) imaging has facilitated liver resection with excision of hepatic veins by estimating the liver volume of portal and hepatic venous territories. However, 3D imaging cannot be used for real-time navigation to determine the liver transection line. This study assessed the value of indocyanine green (ICG) fluorescence imaging with hepatic vein clamping for navigation during liver transection. METHODS Consecutive patients who underwent liver resection with excision of major hepatic veins between 2012 and 2013 were evaluated using ICG fluorescence imaging after clamping veins and injecting ICG. Regional fluorescence intensity (FI) values of non-veno-occlusive regions (FINon ), veno-occlusive regions (FIVO ) and ischaemic regions (FIIS ) were calculated using luminance analysing software. RESULTS Of the 21 patients, ten, four and seven underwent limited resection, monosegmentectomy/sectionectomy and hemihepatectomy respectively, with excision of major hepatic veins. Median veno-occlusive liver volume was 80 (range 30-458) ml. Fluorescence imaging visualized veno-occlusive regions as territories with lower FI compared with non-veno-occlusive regions, and ischaemic regions as territories with no fluorescence after intravenous ICG injection. Median FIIS /FINon was lower than median FIVO /FINon (0·22 versus 0·59; P = 0·002). There were no deaths in hospital or within 30 days, and only one major complication. CONCLUSION ICG fluorescence imaging with hepatic vein clamping visualized non-veno-occlusive, veno-occlusive and ischaemic regions. This technique may guide liver transection by intraoperative navigation, enhancing the safety and accuracy of liver resection.
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Nagai M, Dote K, Kato M, Sasaki S, Oda N. The right insular cortex infarction: a critical factor for mortality? Eur J Neurol 2017; 24:e11. [DOI: 10.1111/ene.13240] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Accepted: 11/30/2016] [Indexed: 11/29/2022]
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Maeno M, Lee C, Kim D, Da Silva J, Nagai S, Sugawara S, Nara Y, Kihara H, Nagai M. Function of Platelet-Induced Epithelial Attachment at Titanium Surfaces Inhibits Microbial Colonization. J Dent Res 2017; 96:633-639. [DOI: 10.1177/0022034516688888] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The aim of this study was to evaluate the barrier function of platelet-induced epithelial sheets on titanium surfaces. The lack of functional peri-implant epithelial sealing with basal lamina (BL) attachment at the interface of the implant and the adjacent epithelium allows for bacterial invasion, which may lead to peri-implantitis. Although various approaches have been reported to combat bacterial infection by surface modifications to titanium, none of these have been successful in a clinical application. In our previous study, surface modification with protease-activated receptor 4–activating peptide (PAR4-AP), which induced platelet activation and aggregation, was successful in demonstrating epithelial attachment via BL and epithelial sheet formation on the titanium surface. We hypothesized that the platelet-induced epithelial sheet on PAR4-AP–modified titanium surfaces would reduce bacterial attachment, penetration, and invasion. Titanium surface was modified with PAR4-AP and incubated with platelet-rich plasma (PRP). The aggregated platelets released collagen IV, a critical BL component, onto the PAR4-AP–modified titanium surface. Then, human gingival epithelial cells were seeded on the modified titanium surface and formed epithelial sheets. Green fluorescent protein (GFP)–expressing Escherichia coli was cultured onto PAR4-AP–modified titanium with and without epithelial sheet formation. While Escherichia coli accumulated densely onto the PAR4-AP titanium lacking epithelial sheet, few Escherichia coli were observed on the epithelial sheet on the PAR4-AP surface. No bacterial invasion into the interface of the epithelial sheet and the titanium surface was observed. These in vitro results indicate the efficacy of a platelet-induced epithelial barrier that functions to prevent bacterial attachment, penetration, and invasion on PAR4-AP–modified titanium.
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Nagai M, Ohira T, Takahashi H, Nakano H, Sakai A, Hashimoto S, Yasumura S. The impact of evacuation on treatment and control of hypertension after Fukushima nuclear accident. Eur J Public Health 2016. [DOI: 10.1093/eurpub/ckw174.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Nagai M, Dote K, Kato M, Sasaki S, Oda N. Long sleep duration: an epiphenomenon or a risk for stroke? Eur J Neurol 2016; 23:e44. [PMID: 27431023 DOI: 10.1111/ene.13039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Accepted: 03/22/2016] [Indexed: 11/28/2022]
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Mitomo S, Omatsu T, Tsuchiaka S, Nagai M, Furuya T, Mizutani T. Activation of c-Jun N-terminal kinase by Akabane virus is required for apoptosis. Res Vet Sci 2016; 107:147-151. [PMID: 27473988 PMCID: PMC7111864 DOI: 10.1016/j.rvsc.2016.06.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Revised: 05/02/2016] [Accepted: 06/12/2016] [Indexed: 12/13/2022]
Abstract
Akabane virus (AKAV) belongs to the Simbu serogroup of the genus Orthobunyavirus in the family Bunyaviridae. It has been shown that AKAV induces apoptosis in mammalian cells. It is necessary to understand the signaling pathways involved in AKAV-induced apoptosis to further elucidate the molecular virology of AKAV. c-Jun N-terminal kinase (JNK) and p38 mitogen-activated protein kinase (MAPK) are mediators of apoptosis; therefore, we investigated the roles of JNK and p38 MAPK cascades in AKAV-infected cells. We found that JNK and p38 MAPK as well as their downstream substrates, c-Jun and heat shock protein 27 (HSP27), were phosphorylated in response to AKAV infection. A JNK inhibitor (SP600125) inhibited AKAV-mediated apoptosis whereas a p38 MAPK inhibitor (SB203580) did not. We conclude that AKAV infection activates the JNK and p38 MAPK signaling pathways, and the JNK cascade plays a crucial role in AKAV-induced apoptosis in vitro. JNK and p38 MAPK were phosphorylated in response to Akabane virus infection. Downstream substrates, c-Jun and heat shock protein 27, were also phosphorylated by viral infection. JNK inhibitor (SP600125) inhibited AKAV-mediated apoptosis whereas a p38 MAPK inhibitor (SB203580) did not.
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Iijima H, Aoyama T, Ito A, Tajino J, Yamaguchi S, Nagai M, Kiyan W, Zhang X, Kuroki H. Exercise intervention increases expression of bone morphogenetic proteins and prevents the progression of cartilage-subchondral bone lesions in a post-traumatic rat knee model. Osteoarthritis Cartilage 2016; 24:1092-102. [PMID: 26805018 DOI: 10.1016/j.joca.2016.01.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 01/07/2016] [Accepted: 01/10/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE This study aimed to determine whether treadmill walking (TW) prevents the progression of post-traumatic osteoarthritic changes in cartilage-subchondral bone unit, and whether the exercise timing changes the exercise efficacy in destabilized medial meniscus (DMM) rat knees. DESIGN Twelve-week-old male Wistar rats underwent DMM surgery on their right knees and sham surgery on their left knees and were assigned to either the sedentary (n = 10) or walking (n = 24) groups. The rats in the walking group were subjected to TW from day 2 through 4 weeks, from 4 through 8 weeks, or from day 2 through 8 weeks (n = 8 per group). Osteoarthritic changes of cartilage and subchondral bone were assessed with micro-computed tomography, histology, and immunohistochemistry 8 weeks after surgery. RESULTS TW prevented the progression of cartilage and subchondral bone lesions induced by the DMM, and increased bone morphogenetic protein (BMP)-2 and -6 expressions in superficial zone chondrocytes and bone-lining cells including osteoblasts. Furthermore, the TW-induced increase in BMPs varied with the exercise timing. Beginning TW 4 weeks after DMM surgery was the best option for increasing BMPs, coinciding with the most robust prevention of osteoarthritic changes. CONCLUSIONS TW increased the expression of BMPs and prevented the progression of cartilage-subchondral bone lesions in rat knees with a DMM. Selective exercise timing may be a key factor in the development of an exercise regimen for preventing the progression of post-traumatic osteoarthritis (PTOA). Furthermore, exercise may have favorable effects even after the PTOA has been developed.
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Nagai M, Hirayama K, Ebihara I, Higuchi T, Shimohata H, Kobayashi M. Serum levels of the soluble haemoglobin scavenger receptor CD163 in MPO-ANCA-associated renal vasculitis. Scand J Rheumatol 2016; 45:397-403. [PMID: 27094919 DOI: 10.3109/03009742.2015.1127410] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES The contribution of infections to the mortality of patients with anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is important, and early and careful infection control is necessary. We investigated the usefulness of the serum-soluble haemoglobin scavenger receptor CD163 for detecting the presence of infectious complications regardless of disease activity. METHOD Soluble CD163 in serum obtained from 45 Japanese patients with myeloperoxidase (MPO)-AAV was measured by an enzyme-linked immunosorbent assay (ELISA). We evaluated 36 samples from active-vasculitis patients, 36 samples from inactive-vasculitis patients without infection, and 19 samples from inactive-vasculitis patients with infectious complications. Serum-soluble CD163 was also measured in 15 infectious patients without vasculitis and in 30 normal controls. RESULTS The mean serum-soluble CD163 level was higher in the patients with infectious complications than in the active-vasculitis patients, inactive-vasculitis patients, and normal controls. There were significant positive correlations between serum-soluble CD163 levels and white blood cell (WBC) count, serum C-reactive protein (CRP) levels, and serum albumin levels, but only serum CRP levels were correlated with serum-soluble CD163 levels in a multiple regression analysis. On the receiver-operating characteristic (ROC) curve, serum-soluble CD163 levels had 80.6% sensitivity and 86.7% specificity for differentiating patients with infection from those without infection. Among the active-vasculitis patients, the mean serum-soluble CD163 level of the patients with alveolar haemorrhage was significantly lower than that of the patients with interstitial lung diseases and that of the patients without pulmonary lesions. CONCLUSIONS The serum-soluble CD163 level may be a useful marker for the detection of infectious complications in MPO-AAV patients.
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