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Kumagai K, Horikawa T, Shigematsu H, Matsubara R, Kitaura K, Eguchi T, Kobayashi H, Nakasone Y, Sato K, Yamada H, Suzuki S, Hamada Y, Suzuki R. Possible Immune Regulation of Natural Killer T Cells in a Murine Model of Metal Ion-Induced Allergic Contact Dermatitis. Int J Mol Sci 2016; 17:ijms17010087. [PMID: 26771600 PMCID: PMC4730330 DOI: 10.3390/ijms17010087] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 01/06/2016] [Accepted: 01/07/2016] [Indexed: 11/16/2022] Open
Abstract
Metal often causes delayed-type hypersensitivity reactions, which are possibly mediated by accumulating T cells in the inflamed skin, called irritant or allergic contact dermatitis. However, accumulating T cells during development of a metal allergy are poorly characterized because a suitable animal model is unavailable. We have previously established novel murine models of metal allergy and found accumulation of both metal-specific T cells and natural killer (NK) T cells in the inflamed skin. In our novel models of metal allergy, skin hypersensitivity responses were induced through repeated sensitizations by administration of metal chloride and lipopolysaccharide into the mouse groin followed by metal chloride challenge in the footpad. These models enabled us to investigate the precise mechanisms of the immune responses of metal allergy in the inflamed skin. In this review, we summarize the immune responses in several murine models of metal allergy and describe which antigen-specific responses occur in the inflamed skin during allergic contact dermatitis in terms of the T cell receptor. In addition, we consider the immune regulation of accumulated NK T cells in metal ion-induced allergic contact dermatitis.
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Wang X, Tsujimura H, Miyaki T, Kumagai K. 293P Primary breast lymphoma: a report of 17 cases from a single institute. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv526.09] [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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53
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Miyaki T, Nakamura R, Shiina N, Wang X, Tsujimura H, Kumagai K, Yamamoto N. 109P Breast cancer patients with bone marrow metastases: a single institution review. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv519.58] [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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54
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Kumagai K, Ookubo H, Kimura H. Discrimination between natural and other gamma ray sources from environmental gamma ray dose rate monitoring data. RADIATION PROTECTION DOSIMETRY 2015; 167:293-297. [PMID: 25948830 DOI: 10.1093/rpd/ncv265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this study, a method to discriminate between natural and other γ-ray sources from environmental γ-ray dose rate monitoring data was developed, and it was successfully applied to actual monitoring data around nuclear facilities. The environmental dose rate is generally monitored by NaI(Tl) detector systems in the low dose rate range. The background dose rate varies mainly as a result of the deposition of (222)Rn progeny in precipitation and shielding of the ground by snow cover. Increments in the environmental dose rate due to radionuclides released from nuclear facilities must be separated from these background variations. The method in the present study corrects for the dose rate variations from natural sources by multiple regression analysis based on the γ-ray counting rates of single-channel analysers opened in the energy ranges of γ-rays emitted by (214)Bi and (208)Tl. Assuming a normal distribution of the results and using the one-sided type I error of 0.01 while ignoring the type II error, the detection limit of the γ-ray dose rate from artificial sources was 0.77 nGy h(-1).
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Kumagai S, Ishibashi K, Kataoka M, Oguro T, Kumagai K, Aikawa K. 403 The expression level of Sulfatase-2 could be a good indicator of prognosis in renal cell carcinoma. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30237-4] [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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Yamamoto N, Kawaguchi K, Fujihara H, Yasukawa M, Kishi Y, Hasebe M, Kumagai K, Hamada Y. Autofluorescence Visualization Detection for Oral Epithelial Dysplasia. J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.joms.2015.06.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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57
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Okumura N, Kawasaki T, Imai S, Kumagai K, Oda K, Matsusue Y. FRI0179 Reducion in Complement C3 and C4 Levels Greater with Tocilizumab as Compared to Anti-TNF in Patients with Rheumatoid Arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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58
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Kumagai K, Suzuki S, Kanri Y, Matsubara R, Fujii K, Wake M, Suzuki R, Hamada Y. Spontaneously developed osteoarthritis in the temporomandibular joint in STR/ort mice. Biomed Rep 2015; 3:453-456. [PMID: 26171147 DOI: 10.3892/br.2015.467] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 05/05/2015] [Indexed: 11/05/2022] Open
Abstract
Temporomandibular joint (TMJ) osteoarthritis is typically a slowly progressive asymmetric disease. Little is known regarding the natural destruction of TMJ articular tissues. The aim of the present study was to investigate morphological changes in the TMJ of STR/ort mice, known to be the model for spontaneous osteoarthritis in the knee joint, and to evaluate STR/ort mice as a suitable animal model for TMJ osteoarthritis. TMJs from 32 STR/ort mice euthanized at 30, 40, 50 or 60 weeks of age, and from 6 CBA mice euthanized at 30, 40 or 60 weeks of age were examined. Toluidine blue and tartrate-resistant acid phosphatase staining were used to assess histological changes in the articular cartilage. Morphological changes in the articular cartilage of the TMJ were evaluated using microcomputed tomography. At the age of 40-50 weeks, 17 (68%) of the 25 STR/ort mice had loss of articular cartilage on histology, with cavitation and erosion of the exposed bone and gradual changes in condylar shape. Furthermore, osteoarthritic morphological changes, and structural alterations were observed by microcomputed tomography. The STR/ort mouse strain appears to develop spontaneous osteoarthritis-like lesions in the TMJ with age, and would be a useful model to study the pathogenesis of TMJ osteoarthritis.
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Obayashi Y, Ozaki Y, Kurakane S, Goto S, Kumagai K, Kitaori T, Suzumori N, Sugiura M. Role of matrix metalloproteinase-2 and matrix metalloproteinase-9 in patients with recurrent miscarriage. J Reprod Immunol 2014. [DOI: 10.1016/j.jri.2014.09.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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60
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Shigematsu H, Kumagai K, Kobayashi H, Eguchi T, Nagaoka T, Miyata Y, Fujii K, Suzuki R, Hamada Y. Accumulation of metal-specific T cells in inflamed skin in a novel murine model of Chromium-induced allergic contact dermatitis. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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61
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Miyaki T, Tsujimura H, Kumagai K, Nakamura R, Yoshii A, Okubo Y, Iwase T, Nakagawa A, Yamamoto N. Does Administration Order of Sequential Fec- Docetaxel As Adjuvant Chemotherapy for Breast Cancer Affect on the Toxicities? : a Retrospective Analysis from a Single-Center. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu327.54] [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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62
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Kumagai K, Kato M, Nabeshima S, Tsuyumu S. T1801 A, B, C, and D, New Quinone and Hydroquinone Antibiotics Produced by a Strain ofPseudomonas. Biosci Biotechnol Biochem 2014; 56:1439-42. [PMID: 1368951 DOI: 10.1271/bbb.56.1439] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
New antibiotics, T1801 A, B, C, and D, were isolated from the culture broth of Pseudomonas sp. SC-1801. Their structures were found by spectroscopic analyses to be tri- and tetra(methylthio) derivatives of hydroquinone (T1801 A and C) or p-benzoquinone (T1801 B and D). They are new quinone and hydroquinone antibiotics and are active against Gram-positive bacteria, some fungi, and yeasts.
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Saito T, Kumagai K, Akamatsu Y, Kobayashi H, Kusayama Y. Five- to ten-year outcome following medial opening-wedge high tibial osteotomy with rigid plate fixation in combination with an artificial bone substitute. Bone Joint J 2014; 96-B:339-44. [PMID: 24589788 DOI: 10.1302/0301-620x.96b3.32525] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Between 2003 and 2007, 99 knees in 77 patients underwent opening wedge high tibial osteotomy. We evaluated the effect of initial stable fixation combined with an artificial bone substitute on the mid- to long-term outcome after medial opening-wedge high tibial osteotomy (HTO) for medial compartmental osteoarthritis or spontaneous osteonecrosis of the knee in 78 knees in 64 patients available for review at a minimum of five years (mean age 68 years; 49 to 82). The mean follow-up was 6.5 years (5 to 10). The mean Knee Society knee score and function score improved from 49.6 (SD 11.4, 26 to 72) and 56.6 (SD 15.6, 5 to 100) before surgery to 88.1 (SD 12.5, 14 to 100) and 89.4 (SD 15.6, 5 to 100) at final follow-up (p < 0.001) respectively. There were no significant differences between patients aged ≥ 70 and < 70 years. The mean standing femorotibial angle was corrected significantly from 181.7° (SD 2.7°, 175° to 185°) pre-operatively to 169.7° (SD 2.4°, 164° to 175°) at one year's follow-up (p < 0.001) and 169.6° (SD 3.0°, 157° to 179°) at the final follow-up (p = 0.69 vs one year). Opening-wedge HTO using a stable plate fixation system combined with a bone substitute is a reliable procedure that provides excellent results. Although this treatment might seem challenging for older patients, our results strongly suggest that the results are equally good.
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Akamatsu Y, Kobayashi H, Kusayama Y, Kumagai K, Mitsugi N, Saito T. Does subchondral sclerosis protect progression of joint space narrowing in patients with varus knee osteoarthritis? Osteoarthritis Cartilage 2014. [DOI: 10.1016/j.joca.2014.02.667] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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Tanaka Y, Yamada H, Saito T, Nakaoka K, Kumagai K, Fujihara H, Mishima K, Hamada Y. Solitary myofibroma of the mandible in an adult with magnetic resonance imaging and positron emission tomography findings: a case report. World J Surg Oncol 2014; 12:69. [PMID: 24678877 PMCID: PMC4230239 DOI: 10.1186/1477-7819-12-69] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Accepted: 03/15/2014] [Indexed: 11/29/2022] Open
Abstract
Myofibroma is a benign tumor composed of myoid spindle cells. The prevalence of myofibroma in the oral cavity is very low, with the mandible being the most common site. This report describes an adult case of myofibroma that arose on the mandible and includes magnetic resonance imaging (MRI) and positron emission tomography (PET) findings. On the MRI T1-weighted images, the tumor appeared with signal iso-intensity and was highly and heterogeneously enhanced with contrast material. On the T2-weighted images, it appeared with increased signal intensity. 18 F-fluorodeoxyglucose (FDG)-PET imaging showed abnormal strong accumulation of FDG in the left mandibular region. The tumor was removed by marginal resection of the left mandible under general anesthesia. Histopathological findings revealed that the tumor stroma contained abundant thin-walled vessels. The postoperative course was uneventful, and we found no evidence of recurrence at the postoperative 34-month follow-up.
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Kumagai K, Rouvelas I, Tsai JA, Mariosa D, Klevebro F, Lindblad M, Ye W, Lundell L, Nilsson M. Meta-analysis of postoperative morbidity and perioperative mortality in patients receiving neoadjuvant chemotherapy or chemoradiotherapy for resectable oesophageal and gastro-oesophageal junctional cancers. Br J Surg 2014; 101:321-38. [PMID: 24493117 DOI: 10.1002/bjs.9418] [Citation(s) in RCA: 157] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/06/2013] [Indexed: 01/10/2023]
Abstract
BACKGROUND The long-term survival benefits of neoadjuvant chemotherapy (NAC) and chemoradiotherapy (NACR) for oesophageal carcinoma are well established. Both are burdened, however, by toxicity that could contribute to perioperative morbidity and mortality. METHODS MEDLINE, the Cochrane Library and Embase were searched to capture the incidence of any postoperative complications, cardiac complications, respiratory complications, anastomotic leakage, postoperative 30-day mortality, total postoperative mortality and treatment-related mortality in randomized clinical trials comparing NAC or NACR with surgery alone, or NAC versus NACR. Meta-analyses comparing NAC and NACR were conducted by using adjusted indirect comparison. RESULTS Twenty-three relevant studies were identified. Comparing NAC or NACR with surgery alone, there was no increase in morbidity or mortality attributable to neoadjuvant therapy. Subgroup analysis of NACR for squamous cell carcinoma (SCC) suggested an increased risk of total postoperative mortality and treatment-related mortality compared with surgery alone: risk ratio 1·95 (95 per cent confidence interval 1·06 to 3·60; P = 0·032) and 1·97 (1·07 to 3·64; P = 0·030) respectively. A combination of direct comparison and adjusted indirect comparison showed no difference between NACR and NAC regarding morbidity or mortality. CONCLUSION Neither NAC nor NACR for oesophageal carcinoma increases the risk of postoperative morbidity or perioperative mortality compared with surgery alone. There was no clear difference between NAC and NACR. Care should be taken with NACR in oesophageal SCC, where an increased risk of postoperative mortality and treatment-related mortality was apparent.
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Shigematsu H, Kumagai K, Kobayashi H, Eguchi T, Kitaura K, Suzuki S, Horikawa T, Matsutani T, Ogasawara K, Hamada Y, Suzuki R. Accumulation of metal-specific T cells in inflamed skin in a novel murine model of chromium-induced allergic contact dermatitis. PLoS One 2014; 9:e85983. [PMID: 24465826 PMCID: PMC3896422 DOI: 10.1371/journal.pone.0085983] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 12/03/2013] [Indexed: 11/19/2022] Open
Abstract
Chromium (Cr) causes delayed-type hypersensitivity reactions possibly mediated by accumulating T cells into allergic inflamed skin, which are called irritants or allergic contact dermatitis. However, accumulating T cells during development of metal allergy are poorly characterized because a suitable animal model is not available. This study aimed to elucidate the skewing of T-cell receptor (TCR) repertoire and cytokine profiles in accumulated T cells in inflamed skin during elucidation of Cr allergy. A novel model of Cr allergy was induced by two sensitizations of Cr plus lipopolysaccharide solution into mouse groin followed by single Cr challenge into the footpad. TCR repertoires and nucleotide sequences of complementary determining region 3 were assessed in accumulated T cells from inflamed skin. Cytokine expression profiles and T-cell phenotypes were determined by qPCR. CD3+CD4+ T cells accumulated in allergic footpads and produced increased T helper 1 (Th1) type cytokines, Fas, and Fas ligand in the footpads after challenge, suggesting CD4+ Th1 cells locally expanded in response to Cr. Accumulated T cells included natural killer (NK) T cells and Cr-specific T cells with VA11-1/VB14-1 usage, suggesting metal-specific T cells driven by invariant NKT cells might contribute to the pathogenesis of Cr allergy.
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Murakawa Y, Nogami A, Shoda M, Naito S, Kumagai K, Inoue K, Miyauchi Y, Yamane T, Morita N, Okumura K. Oral anticoagulation therapy during catheter ablation for atrial fibrillation: J-CARAF registry. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p527] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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69
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Yamada H, Nakaoka K, Horiuchi T, Kumagai K, Ikawa T, Shigeta Y, Imamura E, Iino M, Ogawa T, Hamada Y. Mandibular reconstruction using custom-made titanium mesh tray and particulate cancellous bone and marrow harvested from bilateral posterior ilia. J Plast Surg Hand Surg 2013; 48:183-90. [PMID: 24128312 DOI: 10.3109/2000656x.2013.848809] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The objective of this study is to evaluate usefulness of mandibular reconstructions using a custom-made titanium mesh (Ti-mesh) tray and particulate cancellous bone and marrow (PCBM). A consecutive nine patients who underwent mandibular reconstruction were enrolled in this study. They were five men and four women (mean age: 53.9 years). Virtual reality simulation was performed using computer software based on the pre-operative computed tomography data. A 3-dimensional (3-D) skull model was constructed using a 3-D printer. A tray was custom-made from a Ti-mesh sheet bent to adapt to the model. After PCBM harvesting from bilateral posterior ilia, the tray was fixed to the host bone. New bone formation and configuration of the reconstructed mandible were assessed radiologically. Complications were recorded in each patient during the follow-up period. Patients, satisfaction with post-operative facial contour was evaluated using a visual analogue scale (VAS score, range = 0-100). In six of nine patients, excellent new bone formation was recognised and expected results were radiologically achieved. Complications occurred in four patients. These complications included Ti-mesh fracture, Ti-mesh exposure in the oral cavity, and delayed infection. Mean VAS score on patient satisfaction was 77.6. Although the data are preliminary, the results suggest that this method is clinically useful.
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Kobayashi H, Kumagai K, Eguchi T, Shigematsu H, Kitaura K, Kawano M, Horikawa T, Suzuki S, Matsutani T, Ogasawara K, Hamada Y, Suzuki R. Characterization of T cell receptors of Th1 cells infiltrating inflamed skin of a novel murine model of palladium-induced metal allergy. PLoS One 2013; 8:e76385. [PMID: 24098486 PMCID: PMC3789730 DOI: 10.1371/journal.pone.0076385] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Accepted: 08/30/2013] [Indexed: 12/05/2022] Open
Abstract
Metal allergy is categorized as a delayed-type hypersensitivity reaction, and is characterized by the recruitment of lymphocytes into sites of allergic inflammation. Because of the unavailability of suitable animal models for metal allergy, the role of T cells in the pathogenesis of metal allergy has not been explored. Thus, we developed a novel mouse model for metal allergy associated with infiltration of T cells by multiple injections of palladium (Pd) plus lipopolysaccharide into the footpad. Using this model, we characterized footpad-infiltrating T cells in terms of phenotypic markers, T cell receptor (TCR) repertoires and cytokine expression. CD3+ CD4+ T cells accumulated in the allergic footpads 7 days after Pd challenge. The expression levels of CD25, interleukin-2, interferon-γ and tumor necrosis factor, but not interleukin-4 and interleukin-5, increased in the footpads after challenge, suggesting CD4+ T helper 1 (Th1) cells locally expanded in response to Pd. Infiltrated T cells in the footpads frequently expressed AV18-1 and BV8-2 T cell receptor (TCR) chains compared with T cells in the lymph nodes and exhibited oligoclonality. T-cell clones identified from Pd-allergic mouse footpads shared identical CDR3 sequences containing AV18-1 and BV8-2. These results suggest that TCR AV18-1 and BV8-2 play dominant and critical parts in the antigen specificity of Pd-specific Th1 cells.
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Saiki Y, Ito K, Motoyoshi N, Kumagai K, Saito S, Akiyama M, Adachi O, Kawamoto S. 005 * DIFFERENTIAL SELECTIVE HYPOTHERMIC INTERCOSTAL ARTERY PERFUSION: A NEW METHOD FOR CONFIRMING SPINAL CORD PERFUSION DURING THORACOABDOMINAL AORTIC ANEURYSM REPAIR. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Suzuki T, Kawamoto S, Motoyoshi N, Akiyama M, Kumagai K, Adachi O, Saitou T, Saiki Y. 253 * CONTEMPORARY OUTCOME OF THE SURGICAL MANAGEMENT OF PROSTHETIC GRAFT INFECTION AFTER THORACIC AORTIC REPLACEMENT: IS THERE ROOM TO CONSIDER VACUUM-ASSISTED CLOSURE THERAPY AS AN ALTERNATIVE? Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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73
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Inoki C, Ito Y, Yamashita H, Ueki K, Kumagai K, Fukuda Y, Ninomiya E, Nakamura K, Hayashi R, Ueki M, Otsuki Y. Image Analysis and Ultrastructural Detection of DNA Strand Breaks in Human Endometrium by In Situ End-Labeling Techniques. J Histotechnol 2013. [DOI: 10.1179/his.1997.20.4.321] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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74
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Eguchi T, Kumagai K, Kobayashi H, Shigematsu H, Kitaura K, Suzuki S, Horikawa T, Hamada Y, Ogasawara K, Suzuki R. Accumulation of invariant NKT cells into inflamed skin in a novel murine model of nickel allergy. Cell Immunol 2013; 284:163-71. [DOI: 10.1016/j.cellimm.2013.07.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 06/17/2013] [Accepted: 07/23/2013] [Indexed: 10/26/2022]
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Kobayashi H, Kumagai K, Gotoh A, Eguchi T, Yamada H, Hamada Y, Suzuki S, Suzuki R. Upregulation of epidermal growth factor receptor 4 in oral leukoplakia. Int J Oral Sci 2013; 5:14-20. [PMID: 23492901 PMCID: PMC3632759 DOI: 10.1038/ijos.2013.10] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In the present study, we investigate the expression profile of the epidermal growth factor receptor family, which comprises EGFR/ErbB1, HER2/ErbB2, HER3/ErbB3 and HER4/ErbB4 in oral leukoplakia (LP). The expression of four epidermal growth factor receptor (EGFR) family genes and their ligands were measured in LP tissues from 14 patients and compared with levels in 10 patients with oral lichen planus (OLP) and normal oral mucosa (NOM) from 14 healthy donors by real-time polymerase chain reaction (PCR) and immunohistochemistry. Synchronous mRNA coexpression of ErbB1, ErbB2, ErbB3 and ErbB4 was detected in LP lesions. Out of the receptors, only ErbB4 mRNA and protein was more highly expressed in LP compared with NOM tissues. These were strongly expressed by epithelial keratinocytes in LP lesions, as shown by immunohistochemistry. Regarding the ligands, the mRNA of Neuregulin2 and 4 were more highly expressed in OLP compared with NOM tissues. Therefore, enhanced ErbB4 on the keratinocytes and synchronous modulation of EGFR family genes may contribute to the pathogenesis and carcinogenesis of LP.
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