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Tada M, Inui K, Sugioka Y, Mamoto K, Okano T, Koike T, Nakamura H. Reducing glucocorticoid dosage improves serum osteocalcin in patients with rheumatoid arthritis-results from the TOMORROW study. Osteoporos Int 2016; 27:729-35. [PMID: 26294294 DOI: 10.1007/s00198-015-3291-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 08/11/2015] [Indexed: 01/30/2023]
Abstract
UNLABELLED Decreasing the daily dose of glucocorticoids improved bone metabolic marker levels in patients with rheumatoid arthritis. However, changes in disease activity did not influence bone metabolism. Bone metabolism might thus remain uncontrolled even if disease activity is under good control. Decreasing glucocorticoid dosage appears important for improving bone metabolism. INTRODUCTION Patients with rheumatoid arthritis (RA) develop osteoporosis more frequently than healthy individuals. Bone resorption is increased and bone formation is inhibited in patients with RA, and glucocorticoid negatively affects bone metabolism. We aimed to investigate factors influencing bone metabolic markers in patients with RA. METHODS We started the 10-year prospective cohort Total Management of Risk Factors in Rheumatoid Arthritis Patients to Lower Morbidity and Mortality (TOMORROW) study in 2010. We compared changes in urinary cross-linked N-telopeptide of type I collagen (uNTx) and serum osteocalcin (OC), as markers of bone resorption and formation, respectively, in 202 RA patients and age- and sex-matched volunteers between 2010 and 2011. We also investigated factors influencing ΔuNTx and ΔOC in the RA group using multivariate analysis. RESULTS Values of ΔuNTx were significantly lower in patients with RA than in healthy controls (-0.51 vs. 7.41 nmol bone collagen equivalents (BCE)/mmol creatinine (Cr); p = 0.0013), whereas ΔOC values were significantly higher in RA patients (0.94 vs. 0.37 ng/ml; p = 0.0065). Changes in prednisolone dosage correlated negatively with ΔOC (β = -0.229, p = 0.001), whereas changes in disease activity score, bisphosphonate therapy, and period of biologics therapy did not correlate significantly with ΔOC. No significant correlation was seen between ΔuNTx and change in prednisolone dosage. CONCLUSIONS Decreased glucocorticoid dosage improved bone metabolic markers in RA, but disease activity, bisphosphonate therapy, and period of biologics therapy did not influence levels of bone metabolic markers. Decreasing glucocorticoid dosage appears important for improving bone metabolic marker profiles in patients with RA.
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Kitao M, Hida T, Eguchi N, Tobita H, Utsugi H, Uemura A, Kitaoka S, Koike T. Light compensation points in shade-grown seedlings of deciduous broadleaf tree species with different successional traits raised under elevated CO2. PLANT BIOLOGY (STUTTGART, GERMANY) 2016. [PMID: 26404633 DOI: 10.1046/j.1365-3040.2000.00528.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
We measured leaf photosynthetic traits in shade-grown seedlings of four tree species native to northern Japan, raised under an elevated CO2 condition, to investigate the effects of elevated CO2 on shade tolerance of deciduous broadleaf tree species with different successional traits. We considered Betula platyphylla var. japonica and Betula maximowicziana as pioneer species, Quercus mongolica var. crispula as a mid-successional species, and Acer mono as a climax species. The plants were grown under shade conditions (10% of full sunlight) in a CO2 -regulated phytotron. Light compensation points (LCPs) decreased in all tree species when grown under elevated CO2 (720 μmol·mol(-1) ), which were accompanied by higher apparent quantum yields but no photosynthetic down-regulation. LCPs in Q. mongolica and A. mono grown under elevated CO2 were lower than those in the two pioneer birch species. The LCP in Q. mongolica seedlings was not different from that of A. mono in each CO2 treatment. However, lower dark respiration rates were observed in A. mono than in Q. mongolica, suggesting higher shade tolerance in A. mono as a climax species in relation to carbon loss at night. Thus, elevated CO2 may have enhanced shade tolerance by lowering LCPs in all species, but the ranking of shade tolerance related to successional traits did not change among species under elevated CO2 , i.e. the highest shade tolerance was observed in the climax species (A. mono), followed by a gap-dependent species (Q. mongolica), while lower shade tolerance was observed in the pioneer species (B. platyphylla and B. maximowicziana).
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Kitao M, Hida T, Eguchi N, Tobita H, Utsugi H, Uemura A, Kitaoka S, Koike T. Light compensation points in shade-grown seedlings of deciduous broadleaf tree species with different successional traits raised under elevated CO2. PLANT BIOLOGY (STUTTGART, GERMANY) 2016; 18 Suppl 1:22-7. [PMID: 26404633 DOI: 10.1111/plb.12400] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 09/17/2015] [Indexed: 05/06/2023]
Abstract
We measured leaf photosynthetic traits in shade-grown seedlings of four tree species native to northern Japan, raised under an elevated CO2 condition, to investigate the effects of elevated CO2 on shade tolerance of deciduous broadleaf tree species with different successional traits. We considered Betula platyphylla var. japonica and Betula maximowicziana as pioneer species, Quercus mongolica var. crispula as a mid-successional species, and Acer mono as a climax species. The plants were grown under shade conditions (10% of full sunlight) in a CO2 -regulated phytotron. Light compensation points (LCPs) decreased in all tree species when grown under elevated CO2 (720 μmol·mol(-1) ), which were accompanied by higher apparent quantum yields but no photosynthetic down-regulation. LCPs in Q. mongolica and A. mono grown under elevated CO2 were lower than those in the two pioneer birch species. The LCP in Q. mongolica seedlings was not different from that of A. mono in each CO2 treatment. However, lower dark respiration rates were observed in A. mono than in Q. mongolica, suggesting higher shade tolerance in A. mono as a climax species in relation to carbon loss at night. Thus, elevated CO2 may have enhanced shade tolerance by lowering LCPs in all species, but the ranking of shade tolerance related to successional traits did not change among species under elevated CO2 , i.e. the highest shade tolerance was observed in the climax species (A. mono), followed by a gap-dependent species (Q. mongolica), while lower shade tolerance was observed in the pioneer species (B. platyphylla and B. maximowicziana).
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Watanabe M, Kitaoka S, Eguchi N, Watanabe Y, Satomura T, Takagi K, Satoh F, Koike T. Photosynthetic traits of Siebold's beech seedlings in changing light conditions by removal of shading trees under elevated CO₂. PLANT BIOLOGY (STUTTGART, GERMANY) 2016; 18 Suppl 1:56-62. [PMID: 26307372 DOI: 10.1111/plb.12382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Accepted: 08/15/2015] [Indexed: 06/04/2023]
Abstract
The purpose of this study was to obtain basic information on acclimation capacity of photosynthesis in Siebold's beech seedlings to increasing light intensity under future elevated CO2 conditions. We monitored leaf photosynthetic traits of these seedlings in changing light conditions (before removal of shade trees, the year after removal of shade trees and after acclimation to open conditions) in a 10-year free air CO2 enrichment experiment in northern Japan. Elevated CO2 did not affect photosynthetic traits such as leaf mass per area, nitrogen content and biochemical photosynthetic capacity of chloroplasts (i.e. maximum rate of carboxylation and maximum rate of electron transport) before removal of the shade trees and after acclimation to open conditions; in fact, a higher net photosynthetic rate was maintained under elevated CO2 . However, in the year after removal of the shade trees, there was no increase in photosynthesis rate under elevated CO2 conditions. This was not due to photoinhibition. In ambient CO2 conditions, leaf mass per area and nitrogen content were higher in the year after removal of shade trees than before, whereas there was no increase under elevated CO2 conditions. These results indicate that elevated CO2 delays the acclimation of photosynthetic traits of Siebold's beech seedlings to increasing light intensity.
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Arai M, Koike T, Moriyasu M, Ito S, Ootsuka T, Inagaki T, Hattori J, Yoshino K, Kuroiwa M. Implementation of critical care staff based rapid response team. effect of rapid response system to the unpredicted death. Intensive Care Med Exp 2015. [PMCID: PMC4796971 DOI: 10.1186/2197-425x-3-s1-a67] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Hayashi T, Matsui R, Seto T, Suzuki K, Takiguchi T, Nishio M, Koike T, Kogure Y, Nogami N, Fujiwara K, Kaneda H, Harada T, Shimizu S, Kimura M, Kenmotsu H, Shimokawa M, Goto K. 376PD The multicenter, prospective observational study of the 5-HT3 receptor antagonist and dexamethasone as prophylaxis of chemotherapy- induced nausea and vomiting (CINV) in moderately emetic chemotherapy (MEC) for solid tumors. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv531.09] [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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Yamamoto TO, Agnello M, Akazawa Y, Amano N, Aoki K, Botta E, Chiga N, Ekawa H, Evtoukhovitch P, Feliciello A, Fujita M, Gogami T, Hasegawa S, Hayakawa SH, Hayakawa T, Honda R, Hosomi K, Hwang SH, Ichige N, Ichikawa Y, Ikeda M, Imai K, Ishimoto S, Kanatsuki S, Kim MH, Kim SH, Kinbara S, Koike T, Lee JY, Marcello S, Miwa K, Moon T, Nagae T, Nagao S, Nakada Y, Nakagawa M, Ogura Y, Sakaguchi A, Sako H, Sasaki Y, Sato S, Shiozaki T, Shirotori K, Sugimura H, Suto S, Suzuki S, Takahashi T, Tamura H, Tanabe K, Tanida K, Tsamalaidze Z, Ukai M, Yamamoto Y, Yang SB. Observation of Spin-Dependent Charge Symmetry Breaking in ΛN Interaction: Gamma-Ray Spectroscopy of _{Λ}^{4}He. PHYSICAL REVIEW LETTERS 2015; 115:222501. [PMID: 26650298 DOI: 10.1103/physrevlett.115.222501] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Indexed: 06/05/2023]
Abstract
The energy spacing between the spin-doublet bound state of _{Λ}^{4}He(1^{+},0^{+}) was determined to be 1406±2±2 keV, by measuring γ rays for the 1^{+}→0^{+} transition with a high efficiency germanium detector array in coincidence with the ^{4}He(K^{-},π^{-})_{Λ}^{4}He reaction at J-PARC. In comparison to the corresponding energy spacing in the mirror hypernucleus _{Λ}^{4}H, the present result clearly indicates the existence of charge symmetry breaking (CSB) in ΛN interaction. By combining the energy spacings with the known ground-state binding energies, it is also found that the CSB effect is large in the 0^{+} ground state but is vanishingly small in the 1^{+} excited state, demonstrating that the ΛN CSB interaction has spin dependence.
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Kanno T, Nakatani E, Tatsumi H, Sukegawa S, Karino M, Watanabe M, Koike T, Yoshino A, Nariai Y, Furuki Y, Kagimura T, Sekine J. Surgical complications following open reduction and rigid internal fixation of mandibular condyle fractures using a retromandibular transparotid approach. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.623] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Shinozaki T, Shiga K, Asakage T, Katada C, Kaneko K, Oda I, Shimizu Y, Doyama H, Koike T, Takizawa K, Hirao M, Okada H, Yoshii T, Omori T, Shimoda T, Ochiai A, Ishikawa H, Yokoyama T, Yokoyama A, Muto M. 2819 Head and neck cancer that occurred after early esophageal cancer endoscopic resection. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31562-3] [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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Sugita K, Matsui R, Suzuki K, Takiguchi T, Nishio M, Koike T, Hayashi T, Seto T, Kogure Y, Nogami N, Fujiwara K, Kaneda H, Harada T, Shimizu S, Kimura M, Kenmotsu H, Shimokawa M, Goto K. 1601 The multicenter, prospective observational study of the 5-HT3 receptor antagonist and dexamethasone as prophylaxis of chemotherapy-induced nausea and vomiting (CINV) in moderately emetic chemotherapy (MEC) for solid tumors. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30689-x] [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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Sato M, Imashimizu K, Kuwata T, Yamanashi K, Misawa K, Kobayashi M, Ikeda M, Koike T, Kitamura A, Kosaka S, Nagayama K, Sekine Y, Hirayama S, Okabe R, Sakai H, Watanabe F, Date H. F-147SAFETY, REPRODUCIBILITY AND BENEFIT OF VIRTUAL-ASSISTED LUNG MAPPING IN THORACOSCOPIC SUBLOBAR LUNG RESECTION: A MULTI-CENTRE STUDY IN JAPAN. Interact Cardiovasc Thorac Surg 2015. [DOI: 10.1093/icvts/ivv204.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Tada M, Inui K, Sugioka Y, Mamoto K, Okano T, Koike T, Nakamura H. FRI0062 Influence of Biologic Agents on Bone Mineral Density and Bone Mineral Markers in Patients with Rheumatoid Arthritis: Data from the Airtight Study: Table 1. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Okano T, Inui K, Tada M, Sugioka Y, Mamoto K, Koike T, Nakamura H. FRI0137 Medication Interval of Adalimumab for Rheumatoid Arthritis Patients Might be Extended After the Achievement of Low Disease Activity -Kabuki Study-. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Mamoto K, Inui K, Okano T, Sugioka Y, Tada M, Koike T, Nakamura H. FRI0084 High Levels of Anti-Cyclic Citrullinated Peptide Antibodies and High Doses of Glucocorticoid are Risk Factors for Falls in Patients with Rheumatoid Arthritis: Fourth-Year Results of the Tomorrow Study. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2931] [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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Anno S, Inui K, Mamoto K, Okano T, Sugioka Y, Tada M, Koike T, Nakamura H. AB0481 Abatacept Might not Alter Anti-Cyclic Citrullinated Peptide Levels in Established Rheumatoid Arthritis Patients -Airtight Study-. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Anno S, Inui K, Mamoto K, Okano T, Sugioka Y, Tada M, Koike T, Nakamura H. THU0368 Work Ability and Work Disability Evaluation in Patients with Rheumatoid Arthritis – from the Tomorrow Study: Table 1. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Mamoto K, Inui K, Okano T, Sugioka Y, Tada M, Koike T, Nakamura H. SAT0077 Ultrasonography as a Potent Tool for Predicting Radiographic Progression in Rheumatoid Arthritis Treated with Biological Agents. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Inui K, Koike T, Tada M, Sugioka Y, Mamoto K, Okano T, Nakamura H. AB0359 Sarcopenia is Apparent in Patients with Rheumatoid Arthritis, Especially Those Treated with Biologics -Tomorrow Study-. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1221] [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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Kasahara H, Tomita T, Bohgaki M, Koike T. FRI0589 Use of Ultrasonography and Tomosynthesis Can Improve the Diagnostic Performance of Early Rheumatoid Arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3242] [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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Atsumi T, Yamamoto K, Takeuchi T, Yamanaka H, Ishiguro N, Tanaka Y, Eguchi K, Watanabe A, Origasa H, Shoji T, Togo O, Okada T, van der Heijde D, Miyasaka N, Koike T. SAT0173 Baseline Parameters Identified in Early, Methotrexate-Naïve Rheumatoid Arthritis Patients with Better Outcomes with Certolizumab Pegol+Methotrexate Compared to Placebo+Methotrexate: Post-Hoc Analyses of C-OPERA, A Randomized, Controlled, Phase 3 Study. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Okano T, Inui K, Tada M, Sugioka Y, Mamoto K, Koike T, Nakamura H. OP0219 Additional Intensive Treatment for Rheumatoid Arthritis Patients with Positive Power Doppler Signals Even After Achieving Clinical Remission Might Reduce the Radiological Joint Damage -Scrum Study-. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Hattori A, Kojima T, Takahashi K, Ihzumi T, Nagayama R, Sanada M, Takahashi H, Koike T, Fuse I, Shibata A. Clinical application of platelet shape determination for diagnosis of DIC. BIBLIOTHECA HAEMATOLOGICA 2015:131-47. [PMID: 6667242 DOI: 10.1159/000408454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Abe K, Hayato Y, Iida T, Ishihara K, Kameda J, Koshio Y, Minamino A, Mitsuda C, Miura M, Moriyama S, Nakahata M, Obayashi Y, Ogawa H, Sekiya H, Shiozawa M, Suzuki Y, Takeda A, Takeuchi Y, Ueshima K, Watanabe H, Higuchi I, Ishihara C, Ishitsuka M, Kajita T, Kaneyuki K, Mitsuka G, Nakayama S, Nishino H, Okumura K, Saji C, Takenaga Y, Clark S, Desai S, Dufour F, Herfurth A, Kearns E, Likhoded S, Litos M, Raaf J, Stone J, Sulak L, Wang W, Goldhaber M, Casper D, Cravens J, Dunmore J, Griskevich J, Kropp W, Liu D, Mine S, Regis C, Smy M, Sobel H, Vagins M, Ganezer K, Hartfiel B, Hill J, Keig W, Jang J, Jeoung I, Kim J, Lim I, Scholberg K, Tanimoto N, Walter C, Wendell R, Ellsworth R, Tasaka S, Guillian G, Learned J, Matsuno S, Messier M, Ichikawa A, Ishida T, Ishii T, Iwashita T, Kobayashi T, Nakadaira T, Nakamura K, Nishikawa K, Nitta K, Oyama Y, Suzuki A, Hasegawa M, Maesaka H, Nakaya T, Sasaki T, Sato H, Tanaka H, Yamamoto S, Yokoyama M, Haines T, Dazeley S, Hatakeyama S, Svoboda R, Sullivan G, Gran R, Habig A, Fukuda Y, Itow Y, Koike T, Jung C, Kato T, Kobayashi K, McGrew C, Sarrat A, Terri R, Yanagisawa C, Tamura N, Ikeda M, Sakuda M, Kuno Y, Yoshida M, Kim S, Yang B, Ishizuka T, Okazawa H, Choi Y, Seo H, Gando Y, Hasegawa T, Inoue K, Ishii H, Nishijima K, Ishino H, Watanabe Y, Koshiba M, Totsuka Y, Chen S, Deng Z, Liu Y, Kielczewska D, Berns H, Shiraishi K, Thrane E, Washburn K, Wilkes R. Search forn−n¯oscillation in Super-Kamiokande. Int J Clin Exp Med 2015. [DOI: 10.1103/physrevd.91.072006] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Iwakura N, Fujiwara Y, Tanaka F, Tanigawa T, Yamagami H, Shiba M, Tominaga K, Watanabe T, Iijima K, Koike T, Walls AF, Arakawa T. Basophil infiltration in eosinophilic oesophagitis and proton pump inhibitor-responsive oesophageal eosinophilia. Aliment Pharmacol Ther 2015; 41:776-84. [PMID: 25693747 DOI: 10.1111/apt.13141] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 02/04/2015] [Accepted: 02/05/2015] [Indexed: 12/14/2022]
Abstract
BACKGROUND The features of proton pump inhibitor-responsive oesophageal eosinophilia (PPI-REE) are similar to those of eosinophilic oesophagitis (EoE), but PPI-REE demonstrates symptomatic and histological responses to PPI therapy. Several studies have shown that basophils play a crucial role in the pathogenesis of allergic diseases. AIM To identify and compare basophil infiltration in the oesophageal epithelium in patients with EoE, PPI-REE, gastroesophageal reflux disease (GERD) and normal oesophagus (controls). METHODS Biopsy specimens from 43 patients, including 12 with EoE, 11 with PPI-REE, 10 with GERD and 10 normal oesophagus, were analysed. Immunohistochemistry was performed to quantify the number of basophils and mast cells in the oesophageal epithelium. Double immunofluorescence staining for thymic stromal lymphopoietin (TSLP) and basophils was performed. Patients with EoE were treated with swallowed fluticasone. RESULTS There were no differences in clinical, endoscopic or histological features between patients with EoE and PPI-REE. There were more basophils and mast cells in patients with EoE and PPI-REE than in patients with GERD and control subjects. Basophil infiltration of the oesophageal epithelium in patients with EoE was higher than that in patients with PPI-REE (3.6 ± 2.8 per high power field vs. 1.2 ± 0.9 per high power field respectively; P = 0.02); however, there was no significant difference in mast cell infiltration between the two groups. TSLP was highly expressed in the oesophageal epithelium in areas infiltrated by basophils. Steroid therapy significantly decreased intraepithelial basophils in patients with EoE. CONCLUSION Basophils may play an important role in the pathogenesis of eosinophilic oesophagitis.
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Iijima K, Koike T, Ara N, Nakagawa K, Kondo Y, Uno K, Hatta W, Asano N, Imatani A, Shimosegawa T. Identification of a high-risk group for low-dose aspirin-induced gastropathy by measuring serum pepsinogen in H. pylori-infected subjects. J Gastroenterol 2015; 50:305-12. [PMID: 24952898 DOI: 10.1007/s00535-014-0976-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Accepted: 06/04/2014] [Indexed: 02/04/2023]
Abstract
BACKGROUND We recently demonstrated in humans that the extent of low-dose aspirin (LDA)-induced gastropathy was directly related to the individual gastric acid secretion level. We also established reliable cutoff serum pepsinogen (PG) values to predict gastric acid secretion status. In this study, we investigated the clinical usefulness of measuring the serum pepsinogen values for identifying a high-risk group for gastric mucosal injury among chronic LDA users. METHODS One hundred long-term LDA users were enrolled in this analysis. Serum from each subject was subjected to determination of H. pylori status and measurement of pepsinogen values. According to our recent report, a PG I value ≥ 50 ng/mL was defined as estimated hyperchlorhydria in H. pylori-negative subjects, while a PG I/II ≥ 3.3 was defined as estimated hyperchlorhydria in H. pylori-positive subjects. The grade of gastric mucosal injury was assessed endoscopically, and multiple logistic regression analyses were used to estimate the risk. RESULTS Estimated hyperchlorhydria was a strong independent risk for intensive gastric mucosal injury with an OR (95% CI): 34.0 (4.5-259) and for gastric ulcer with an OR (95% CI): 10.2 (1.8-58.3) in H. pylori-positive subjects, while it was not a significant risk in H. pylori-negative subjects. The association persisted even after excluding those with conventional risks for LDA-gastropathy such as ulcer histories. CONCLUSION Using simple serum measurement of H. pylori antibody and pepsinogen concentrations, an extremely high-risk group for LDA-induced gastropathy could be extracted, and these patients should become a therapeutic target for prevention of LDA-induced gastropathy.
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