26
|
Koizumi R, Aiba A, Kaneko S, Fujii S, Nishino T, Kiguchi M. Investigation on the formation process of metal atomic filament for metal sulfide atomic switches by electrical measurement. NANOTECHNOLOGY 2019; 30:125202. [PMID: 30620940 DOI: 10.1088/1361-6528/aafc79] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We have studied the formation process of the metal atomic filament for metal sulfide atomic switches by electrical measurement. The switching between ON and OFF states of the atomic switch is controlled by the application of the bias voltage for the atomic switches. The SET (OFF → ON) and RESET (ON → OFF) voltages were investigated for the atomic switch where the Ag2S or Cu2S layer were sandwiched between the Pt and Ag or Cu electrodes. The SET and RESET voltages of the Ag/Cu2S/Pt and Cu/Ag2S/Pt were close to those of the Ag/Ag2S/Pt atomic switch, and different from those of the Cu/Cu2S/Pt atomic switch. These results indicated that the dominant chemical species of the making and breaking part of the metal filament was Ag, and that the source of the metal filament was both the sulfide layer and the metal electrode.
Collapse
|
27
|
Kobayashi S, Kaneko S, Fujii S, Nishino T, Tsukagoshi K, Kiguchi M. Stretch dependent electronic structure and vibrational energy of the bipyridine single molecule junction. Phys Chem Chem Phys 2019; 21:16910-16913. [DOI: 10.1039/c9cp01442j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Change in the molecular orbital energy and vibrational energy of the bipyridine single molecule junction as a function of stretch distance.
Collapse
|
28
|
Takayama S, Masataka M, Kaneko S, Ishii T. Acupuncture and Massage Therapies for Disaster Victims. J Acupunct Meridian Stud 2018. [DOI: 10.1016/j.jams.2018.08.177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
|
29
|
Ito M, Kaikita K, Sueta D, Ishii M, Oimatsu Y, Mitsuse T, Arima Y, Iwashita S, Takahashi A, Kanazawa H, Kaneko S, Kanemaru Y, Kiyama T, Yamabe H, Tsujita K. P2504Inappropriate dose of direct oral anticoagulants therapy in patients with non-valvular atrial fibrillation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
30
|
Yamabe H, Kanazawa H, Ito M, Kaneko S, Kanemaru Y, Kiyama T, Tsujita K. Slow Potential at the Entrance of the Slow Conduction Zone in the Reentry Circuit of a Verapamil-Sensitive Atrial Tachycardia Originating From the Atrioventricular Annulus. J Am Heart Assoc 2018; 7:JAHA.118.009223. [PMID: 29980519 PMCID: PMC6064849 DOI: 10.1161/jaha.118.009223] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Slow conduction zone in a verapamil-sensitive reentrant atrial tachycardia originating from atrioventricular annulus is composed of calcium channel-dependent tissue. We examined whether there was a slow potential (SP) at the entrance of the slow conduction zone. METHODS AND RESULTS We first identified the pacing site from where manifest entrainment and orthodromic capture of the earliest atrial activation site were demonstrated in 40 atrioventricular annulus patients with atrioventricular annulus. Radiofrequency energy was then delivered 2 cm proximal to the earliest atrial activation site in the direction of entrainment pacing site and gradually advanced toward the earliest atrial activation site until atrial tachycardia termination to localize the entrance of the slow conduction zone. Electrogram characteristics were analyzed at successful and unsuccessful ablation sites. During sinus rhythm, SP was observed at all 40 successful sites, but was observed at only 12 unsuccessful sites (P<0.0001). During sinus rhythm, there was no significant difference in electrogram amplitude nor width of atrial electrogram between successful and unsuccessful sites (0.407±0.281 versus 0.487±0.447 mV [P=0.1989] and 37.0±9.2 versus 38.9±8.0 ms [P=0.1773]); however, SP amplitude and width at successful sites were significantly greater than those at unsuccessful sites (0.110±0.049 versus 0.025±0.046 mV [P<0.0001] and 38.8±13.4 versus 8.1±13.2 ms [P<0.0001]). During atrial tachycardia, SP amplitude was significantly attenuated (0.088±0.042 versus 0.110±0.049 mV, P<0.001) and SP width was significantly prolonged (47.8±14.1 versus 38.8±13.4 ms, P<0.0001) at successful sites. CONCLUSIONS SP was observed during sinus rhythm at the entrance of the slow conduction zone; however, SP amplitude was attenuated and SP width was prolonged during atrial tachycardia, suggesting that SP reflects the characteristics of calcium channel-dependent tissue involved in atrioventricular annulus reentry circuit.
Collapse
|
31
|
Ito M, Yamabe H, Koyama J, Kanazawa H, Kaneko S, Kanemaru Y, Kiyama T, Arima Y, Takashio S, Yamamoto E, Izumiya Y, Kojima S, Kaikita K, Shono T, Utsunomiya D, Sasaki Y, Yamashita Y, Tsujita K. Analysis for the primary predictive factor for the incidence of esophageal injury after ablation of atrial fibrillation. J Cardiol 2018; 72:480-487. [PMID: 29935765 DOI: 10.1016/j.jjcc.2018.05.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 04/15/2018] [Accepted: 05/07/2018] [Indexed: 10/28/2022]
Abstract
BACKGROUND Esophageal injury (EI) is a serious complication that occurs after catheter ablation of atrial fibrillation (AF), however predictable factor of EI is unclear. METHODS Among 308 patients who underwent AF ablation, upper gastrointestinal tract endoscopy was performed the next day after ablation to examine for EI. To define the primary factor that predicts EI, patients' characteristics, number and amount of radiofrequency energy applied to the posterior wall, ablation procedure, and the shortest distance between esophagus and posterior left atrium measured on contrast computed tomography (SD-CT) were analyzed. RESULTS EI was found in 27 patients (8.8%). There were no significant differences in the patient characteristics, number and amount of radiofrequency energy applied to posterior wall or ablation procedure between patients with (Injury Group) and without EI (Non-Injury Group). However, SD-CT in the Injury Group was significantly shorter than that in Non-Injury Group (2.3±0.6mm vs 4.1±0.9mm, p<0.001). The area under a receiver operating characteristic curve using SD-CT as a predictive marker in EI patients was 0.988 (p<0.001). When the cut-off value of SD-CT was set at 2.9mm, the sensitivity and specificity for EI diagnosis were 92.3% and 96.8%, and the positive predictive value and negative predictive value were 0.75 and 0.99, respectively. CONCLUSIONS EI observed after catheter ablation of AF was closely associated with the SD-CT. Patients with SD-CT below 2.9mm have a potential risk of EI and thus must be strictly followed.
Collapse
|
32
|
Tatemoto K, Nozaki Y, Tsuda R, Kaneko S, Tomura K, Furuno M, Ogasawara H, Edamura K, Takagi H, Iwamura H, Noguchi M, Naito T. Endogenous protein and enzyme fragments induce immunoglobulin E-independent activation of mast cells via a G protein-coupled receptor, MRGPRX2. Scand J Immunol 2018; 87:e12655. [PMID: 29484687 DOI: 10.1111/sji.12655] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 02/20/2018] [Indexed: 12/31/2022]
Abstract
Mast cells play a central role in inflammatory and allergic reactions by releasing inflammatory mediators through 2 main pathways, immunoglobulin E-dependent and E-independent activation. In the latter pathway, mast cells are activated by a diverse range of basic molecules (collectively known as basic secretagogues) through Mas-related G protein-coupled receptors (MRGPRs). In addition to the known basic secretagogues, here, we discovered several endogenous protein and enzyme fragments (such as chaperonin-10 fragment) that act as bioactive peptides and induce immunoglobulin E-independent mast cell activation via MRGPRX2 (previously known as MrgX2), leading to the degranulation of mast cells. We discuss the possibility that MRGPRX2 responds various as-yet-unidentified endogenous ligands that have specific characteristics, and propose that MRGPRX2 plays an important role in regulating inflammatory responses to endogenous harmful stimuli, such as protein breakdown products released from damaged or dying cells.
Collapse
|
33
|
Nishida T, Lee SK, Inoue Y, Saeki K, Ishikawa K, Kaneko S. Adjunctive perampanel in partial-onset seizures: Asia-Pacific, randomized phase III study. Acta Neurol Scand 2018; 137:392-399. [PMID: 29250772 DOI: 10.1111/ane.12883] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/24/2017] [Indexed: 02/01/2023]
Abstract
OBJECTIVES To evaluate the efficacy, safety, and tolerability of perampanel, a selective, non-competitive, α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor antagonist, as an adjunctive treatment for patients with refractory partial-onset seizures (POS) from Asia-Pacific. MATERIALS & METHODS This multicenter, randomized, double-blind, placebo-controlled trial (ClinicalTrials.gov identifier: NCT01618695) involved patients aged ≥12 years with refractory POS (receiving 1-3 antiepileptic drugs). Patients were randomized (1:1:1:1) to receive once-daily placebo or perampanel 4, 8, or 12 mg over a 6-week titration and 13-week maintenance double-blind period. Enzyme-inducing antiepileptic drugs were equally stratified between groups. The primary efficacy endpoint was percent change in POS frequency per 28 days (double-blind phase vs baseline). Other efficacy endpoints included ≥50% responder rate and seizure freedom. Treatment-emergent adverse events (TEAEs) were also monitored. RESULTS Of 710 randomized patients, seizure frequency data were available for 704 patients. Median percent changes in POS frequency per 28 days indicated dose-proportional reductions in seizure frequency: -10.8% with placebo and -17.3% (P = .2330), -29.0% (P = .0003), and -38.0% (P < .0001) with perampanel 4, 8, and 12 mg, respectively. In total, 108 (15.3%) patients discontinued treatment; 44 (6.2%) due to TEAEs. TEAEs occurring in ≥5% of patients, and reported at least twice as frequently with perampanel vs placebo, included dizziness and irritability. CONCLUSIONS Adjunctive perampanel (8 and 12 mg/d) significantly improved seizure control in patients with refractory POS. Safety and tolerability were acceptable at daily doses of perampanel 4-12 mg.
Collapse
|
34
|
Goten C, Usui S, Inoue O, Takashima S, Kato T, Murai H, Furusho K, Kaneko S, Takamura M. P179The role of circulation CD271-positive cells in peripheral blood for pulmonary hypertension. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.136] [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
|
35
|
Murakami A, Nakamura M, Kaneko S, Lin WL, Dickson DW, Kusaka H. Aberrant accumulation of ErbB4 in progressive supranuclear palsy. Neuropathol Appl Neurobiol 2018; 44:563-573. [PMID: 29319907 DOI: 10.1111/nan.12460] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 12/28/2017] [Indexed: 11/29/2022]
Abstract
AIMS The human epidermal growth factor receptor family consists of four members that belong to the ErbB lineage of proteins (ErbB1-4). Neuregulin-1 (NRG1)/ErbB signalling regulates brain development and function. Abnormalities in this signalling have been implicated in the aetiology or development of neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease and amyotrophic lateral sclerosis. So, we aimed at investigating whether the expression of NRG1 or ErbB proteins are altered in progressive supranuclear palsy (PSP). METHODS The brains of 10 PSP and six control patients were investigated by immunohistochemical analysis. RESULTS Whereas C-terminal ErbB4 immunoreacitivity was partially but distinctly present in the cytoplasm and/or in the nucleus of neurons in control patients, it was rarely observed in the neuronal nuclei in PSP patients. In contrast, neurofibrillary tangles, coiled bodies and threads were robustly immunoreactive for C-terminal ErbB4 in PSP. Double immunofluorescence for C-terminal ErbB4 and phospho-tau revealed co-localization of these proteins within neuronal and glial inclusions. To the contrary, there was no difference in the subcellular localization of NRG1, ErbB1, ErbB2, and N-terminal ErbB4 between control and PSP patients. These proteins were localized in the cytoplasm of neurons. CONCLUSIONS Our present results suggest that NRG1/ErbB4 signalling could be an important event in the pathogenesis of PSP.
Collapse
|
36
|
Sasaki S, Koga H, Krosshaug T, Kaneko S, Fukubayashi T. Kinematic analysis of pressing situations in female collegiate football games: New insight into anterior cruciate ligament injury causation. Scand J Med Sci Sports 2017; 28:1263-1271. [DOI: 10.1111/sms.13018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2017] [Indexed: 12/19/2022]
|
37
|
Komura T, Sakai Y, Takabatake H, Harada K, Ohta T, Kitagawa H, Kaneko S. Immune-mediated cystatin A expression in patients with pancreatic ductal adenocarcinoma. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx711.056] [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
|
38
|
Terashima T, Yamashita T, Arai K, Kaneko S. Hepatic reserve and the other conditions for regorafenib as second-line treatment in patients with advanced hepatocellular carcinoma following first-line therapy with sorafenib in Japanese practical setting. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx660.047] [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
|
39
|
Kido H, Terashima T, Yamashita T, Takatori H, Kitamura K, Kaneko S. Dose intensity and initial treatment effect of FOLFIRINOX supported with pegfilgrastim for patients with pancreatic ductal adenocarcinoma. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx660.037] [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
|
40
|
Oki M, Kaneko S, Morise S, Takenouchi N, Hashizume T, Tsuge A, Nakamura M, Wate R, Kusaka H. Zonisamide ameliorates levodopa-induced dyskinesia and reduces expression of striatal genes in Parkinson model rats. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1675] [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]
|
41
|
Miyake K, Kunieda T, Kusaka H, Kaneko S, Tsuge A, Oki M, Sakamoto H, Nakayama K. Correlation between vessel angle and successful recanalization using adapt technique. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1755] [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]
|
42
|
Kunieda T, Miyake K, Sakamoto H, Iwasaki Y, Fujita K, Nakamura M, Kaneko S, Kusaka H. Leptomeningeal collaterals strongly correlate with reduced CVR measured by acetazolamide-challenged SPECT using a stereotactic extraction estimation analysis in patients with internal carotid artery stenosis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2260] [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]
|
43
|
Hamaoka T, Murai H, Sugimoto H, Mukai Y, Okabe Y, Inoue O, Tokuhisa H, Kusayama T, Takashima S, Kato T, Usui S, Furusho H, Takata S, Takamura M, Kaneko S. P1570The relationship between arousal index, oxygen desaturation during sleep and daytime muscle sympathetic nerve activity in obstructive sleep apnea syndrome. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1570] [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
|
44
|
Inoue O, Usui S, Nomura A, Goten C, Hamaoka T, Ootsuji H, Takashima S, Kato T, Murai H, Furusho H, Iino K, Takemura H, Kaneko S, Takamura M. P2555Identification of the angiogenic subset of human adipose-derived stem cells by evaluation of capability to induce M2-dominant macrophage polarization in cell therapy. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2555] [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
|
45
|
Usui S, Takamura M, Misu H, Murai H, Furusho H, Takashima S, Takamura T, Oto I, Kaneko S. P1452Endogenous selenoprotein P mediates pressure overload-induced cardiac hypertrophy. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1452] [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
|
46
|
Marui A, Ishikawa Y, Kaneko S, Kamiyama Y, Aizawa N. ASSOCIATION OF SELF-RATED HEALTH IN COMMUNITY-DWELLING ELDERLY PEOPLE OF JAPAN. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1974] [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
|
47
|
Ishikawa Y, Marui A, Kaneko S, Kamiyama Y, Aizawa N. SELF-REPORTED SLEEP, DEMOGRAPHICS, AND HEALTH IN SENIORS IN MIBU, JAPAN. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1979] [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
|
48
|
Ikeda M, Shimizu S, Sato T, Morimoto M, Kojima Y, Inaba Y, Hagihara A, Kudo M, Nakamori S, Kaneko S, Sugimoto R, Tahara T, Ohmura T, Yasui K, Sato K, Ishii H, Furuse J, Okusaka T. Reply to the Letter to the editor 'Sorafenib plus hepatic arterial infusion chemotherapy with cisplatin versus Sorafenib for advanced hepatocellular carcinoma: randomized phase II trial' by Fornaro et al. Ann Oncol 2017; 28:903-904. [PMID: 28137738 DOI: 10.1093/annonc/mdx013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Indexed: 11/12/2022] Open
|
49
|
Yokosawa M, Kondo Y, Tahara M, Iizuka-Koga M, Segawa S, Kaneko S, Tsuboi H, Yoh K, Takahashi S, Matsumoto I, Sumida T. T-bet over-expression regulates aryl hydrocarbon receptor-mediated T helper type 17 differentiation through an interferon (IFN)γ-independent pathway. Clin Exp Immunol 2017; 188:22-35. [PMID: 27936495 DOI: 10.1111/cei.12912] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/21/2016] [Indexed: 01/27/2023] Open
Abstract
Various transcription factors are also known to enhance or suppress T helper type 17 (Th17) differentiation. We have shown previously that the development of collagen-induced arthritis was suppressed in T-bet transgenic (T-bet Tg) mice, and T-bet seemed to suppress Th17 differentiation through an interferon (IFN)-γ-independent pathway, although the precise mechanism remains to be clarified. The present study was designed to investigate further the mechanisms involved in the regulation of Th17 differentiation by T-bet over-expression, and we found the new relationship between T-bet and aryl hydrocarbon receptor (AHR). Both T-bet Tg mice and IFN-γ-/- -over-expressing T-bet (T-bet Tg/IFN-γ-/- ) mice showed inhibition of retinoic acid-related orphan receptor (ROR)γt expression and IL-17 production by CD4+ T cells cultured under conditions that promote Th-17 differentiation, and decreased IL-6 receptor (IL-6R) expression and signal transducer and activator of transcription-3 (STAT-3) phosphorylation in CD4+ T cells. The mRNA expression of ahr and rorc were suppressed in CD4+ T cells cultured under Th-17 conditions from T-bet Tg mice and T-bet Tg/IFN-γ-/- mice. CD4+ T cells of wild-type (WT) and IFN-γ-/- mice transduced with T-bet-expressing retrovirus also showed inhibition of IL-17 production, whereas T-bet transduction had no effect on IL-6R expression and STAT-3 phosphorylation. Interestingly, the mRNA expression of ahr and rorc were suppressed in CD4+ T cells with T-bet transduction cultured under Th17 conditions. The enhancement of interleukin (IL)-17 production from CD4+ T cells by the addition of AHR ligand with Th17 conditions was cancelled by T-bet over-expression. Our findings suggest that T-bet over-expression-induced suppression of Th17 differentiation is mediated through IFN-γ-independent AHR suppression.
Collapse
|
50
|
Sakurai D, Yonekura S, Iinuma T, Sakurai T, Morimoto Y, Mita Y, Arai T, Suzuki S, Okuma Y, Kaneko S, Okamoto Y. Sublingual immunotherapy for allergic rhinitis: subjective versus objective tools to evaluate its success. Rhinology 2016. [PMID: 27107025 DOI: 10.4193/rhin15.223] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Biomarkers that enable objective evaluation of the clinical effects of immunotherapy for allergic rhinitis have yet to be identified. METHODS This study included 40 patients who were enrolled in a large randomized, double-blind, placebo-controlled, multicenter study examining the efficacy of sublingual immunotherapy (SLIT) using Japanese cedar (JC) pollen extract during two consecutive pollen seasons from 2010 to 2012. Based on changes in total nasal symptom medication score, patients in the SLIT and placebo groups were subdivided into two subgroups: good responders and poor responders. The levels of JC pollen-specific IL-10+Foxp3+ cells and specific Th2 cytokine-producing cells were measured and the association with the efficacy of SLIT was analysed. RESULTS The total nasal symptom medication score was significantly lower in the SLIT group compared with the placebo group. The number of JC pollen-specific Th2 cytokine-producing cells increased during the pollen season in the placebo group and in poor responders in the SLIT group; however, the increases were inhibited in the good responders in the SLIT group. The number of JC pollen-specific IL-10+Foxp3+ cells increased only in these good responders. CONCLUSIONS Changes in levels of allergen-specific Th2 cytokine-producing cells and IL-10+Foxp3+ cells could be objective biomarkers for SLIT.
Collapse
|