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Matsui H, Bradbury MH, Matzke H. Self-Diffusion Processes in Nuclear Carbonitrides UCxN1 − x and (U, Pu)C0.8N0.2. NUCL SCI ENG 2017. [DOI: 10.13182/nse78-a27222] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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77
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Shiraishi A, Kushimoto S, Otomo Y, Matsui H, Hagiwara A, Murata K. Effectiveness of early administration of tranexamic acid in patients with severe trauma. Br J Surg 2017; 104:710-717. [PMID: 28230248 DOI: 10.1002/bjs.10497] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 12/03/2016] [Accepted: 01/09/2017] [Indexed: 11/08/2022]
Abstract
BACKGROUND A reduction in mortality with the early use of tranexamic acid has been demonstrated in severely injured patients who are bleeding. However, the modest treatment effect with no reduction in blood transfusion has raised concerns. The aim of the present study was to estimate the effectiveness of regular use of tranexamic acid in severely injured patients. METHODS This multicentre observational study used retrospectively collected data from consecutive injured patients (Injury Severity Score at least 16) treated in 15 Japanese academic institutions in 2012. A propensity score-matched analysis compared patients who did or did not receive tranexamic acid administration within 3 h of injury. Study outcomes included 28-day all-cause and cause-specific mortality, and need for blood transfusion. RESULTS Of 796 eligible subjects, 281 were treated with tranexamic acid. Propensity score matching selected a total of 500 matched subjects (250 in each group). Tranexamic acid administration was associated with lower 28-day mortality (10·0 versus 18·4 per cent; difference -8·4 (95 per cent c.i. -14·5 to -2·3) per cent) and lower 28-day mortality from primary brain injury (6·0 versus 13·2 per cent; difference -7·2 (-12·3 to -2·1) per cent). However, there was no significant difference between groups in the need for blood transfusion (33·2 versus 34·8 per cent; difference -1·6 (-9·9 to 6·7) per cent). CONCLUSION Early tranexamic acid use was associated with reduced mortality in severely injured patients, in particular those with a primary brain injury.
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Sugino N, Kawahara M, Tatsumi G, Kanai A, Matsui H, Yamamoto R, Nagai Y, Fujii S, Shimazu Y, Hishizawa M, Inaba T, Andoh A, Suzuki T, Takaori-Kondo A. A novel LSD1 inhibitor NCD38 ameliorates MDS-related leukemia with complex karyotype by attenuating leukemia programs via activating super-enhancers. Leukemia 2017; 31:2303-2314. [PMID: 28210006 DOI: 10.1038/leu.2017.59] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 01/22/2017] [Accepted: 02/03/2017] [Indexed: 12/15/2022]
Abstract
Lysine-specific demethylase 1 (LSD1) regulates gene expression by affecting histone modifications and is a promising target for acute myeloid leukemia (AML) with specific genetic abnormalities. Novel LSD1 inhibitors, NCD25 and NCD38, inhibited growth of MLL-AF9 leukemia as well as erythroleukemia, megakaryoblastic leukemia and myelodysplastic syndromes (MDSs) overt leukemia cells in the concentration range that normal hematopoiesis was spared. NCD25 and NCD38 invoked the myeloid development programs, hindered the MDS and AML oncogenic programs, and commonly upregulated 62 genes in several leukemia cells. NCD38 elevated H3K27ac level on enhancers of these LSD1 signature genes and newly activated ~500 super-enhancers. Upregulated genes with super-enhancer activation in erythroleukemia cells were enriched in leukocyte differentiation. Eleven genes including GFI1 and ERG, but not CEBPA, were identified as the LSD1 signature with super-enhancer activation. Super-enhancers of these genes were activated prior to induction of the transcripts and myeloid differentiation. Depletion of GFI1 attenuated myeloid differentiation by NCD38. Finally, a single administration of NCD38 causes the in vivo eradication of primary MDS-related leukemia cells with a complex karyotype. Together, NCD38 derepresses super-enhancers of hematopoietic regulators that are silenced abnormally by LSD1, attenuates leukemogenic programs and consequently exerts anti-leukemic effect against MDS-related leukemia with adverse outcome.
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Nugraha MI, Häusermann R, Watanabe S, Matsui H, Sytnyk M, Heiss W, Takeya J, Loi MA. Broadening of Distribution of Trap States in PbS Quantum Dot Field-Effect Transistors with High-k Dielectrics. ACS APPLIED MATERIALS & INTERFACES 2017; 9:4719-4724. [PMID: 28084725 PMCID: PMC5330653 DOI: 10.1021/acsami.6b14934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 01/13/2017] [Indexed: 05/31/2023]
Abstract
We perform a quantitative analysis of the trap density of states (trap DOS) in PbS quantum dot field-effect transistors (QD-FETs), which utilize several polymer gate insulators with a wide range of dielectric constants. With increasing gate dielectric constant, we observe increasing trap DOS close to the lowest unoccupied molecular orbital (LUMO) of the QDs. In addition, this increase is also consistently followed by broadening of the trap DOS. We rationalize that the increase and broadening of the spectral trap distribution originate from dipolar disorder as well as polaronic interactions, which are appearing at strong dielectric polarization. Interestingly, the increased polaron-induced traps do not show any negative effect on the charge carrier mobility in our QD devices at the highest applied gate voltage, giving the possibility to fabricate efficient low-voltage QD devices without suppressing carrier transport.
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Sopko N, Matsui H, Yoshida T, Liu X, Kates M, Bivalacqua T. 061 Stromal Derived Factor-1 Penile Injections Improve Erectile Function Preservation following Nerve Crush Injury by Enhancing Stem Cell Recruitment to the Major Pelvic Ganglion. J Sex Med 2017. [DOI: 10.1016/j.jsxm.2016.12.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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81
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Chen LW, Hung CM, Matsui H, Lee YP. New experimental evidence to support roaming in the reaction Cl + isobutene (i-C 4H 8). Sci Rep 2017; 7:40105. [PMID: 28079173 PMCID: PMC5228202 DOI: 10.1038/srep40105] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 11/30/2016] [Indexed: 12/05/2022] Open
Abstract
The reaction Cl + isobutene (i-C4H8) was reported by Suits et al. to proceed via, in addition to abstraction, an addition-elimination path following a roaming excursion of Cl; a near-zero translational energy release and an isotropic angular distribution observed at a small collision energy characterized this mechanism. We employed a new experimental method to further characterize this roaming mechanism through observation of the internal distribution of HCl (v, J) and their temporal behavior upon irradiation of a mixture of Cl2C2O2 and i-C4H8 in He or Ar buffer gas. With 1–3 Torr buffer gas added to approach the condition of small collision energy, the intensities of emission of HCl (v = 1, 2) and the HCl production rates increased significantly; Ar shows a more significant effect than He because Ar quenches Cl more efficiently to reduce the collisional energy and facilitate the roaming path. According to kinetic modeling, the rate of addition-elimination (roaming) increased from kE ≈ 2 × 105 s−1 when little buffer gas was present to ~1.9 × 106 s−1 when 2–3 Torr of Ar was added, and the branching ratio for formation of [HCl (v = 2)]/[HCl (v = 1)] increased from 0.02 ± 0.01 for abstraction to 0.06 ± 0.01 for roaming.
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Matsui H, Sopko N, Kates M, Liu X, Bivalacqua T. 015 Degeneration of Parasympathetic Nerve Can be Prevented by Inhibitin TNF-Alpha Signaling. J Sex Med 2017. [DOI: 10.1016/j.jsxm.2016.11.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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83
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Sopko N, Matsui H, Lough D, Harris K, Kates M, Miller D, Redett R, Billups K, Burnett A, Brandacher G, Bivalacqua T. 016 Ex-Vivo Model of Human Penile Transplantation and Rejection: Effects of Rejection and Immunosuppresion on Erectile Physiology. J Sex Med 2017. [DOI: 10.1016/j.jsxm.2016.11.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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84
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Arai Y, Jo T, Matsui H, Kondo T, Takaori-Kondo A. Efficacy of antithymocyte globulin for allogeneic hematopoietic cell transplantation: a systematic review and meta-analysis. Leuk Lymphoma 2016; 58:1840-1848. [PMID: 27951736 DOI: 10.1080/10428194.2016.1266624] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The efficacy of rabbit antithymocyte globulin (ATG) for the prevention of graft-versus-host disease (GVHD) has been evaluated in several randomized control trials, but the results show some discrepancies. Therefore, we performed a systematic review and meta-analysis covering the latest RCTs including six trials (total 845 patients). The incidence of acute and chronic GVHD was significantly lower in the ATG arms (risk ratio, 0.75 and 0.54, respectively). No significant differences were found regarding overall survival, the incidence of relapse, and non-relapse mortality; however, the incidence of cytomegalovirus and Epstein-Barr virus reactivation increased (risk ratio, 1.25 and 1.33), and neutrophil engraftment was significantly delayed (median, 2.66 days). In conclusion, rabbit ATG should be beneficial as a GVHD prophylaxis in addition to conventional regimens, with close monitoring of virus reactivation and enough attention to delayed engraftment. Studies comparing the timing and dosage of ATG are essential to determine the suitable prophylactic regimens.
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Shiwaku R, Takeda Y, Fukuda T, Fukuda K, Matsui H, Kumaki D, Tokito S. Printed 2 V-operating organic inverter arrays employing a small-molecule/polymer blend. Sci Rep 2016; 6:34723. [PMID: 27698493 PMCID: PMC5048160 DOI: 10.1038/srep34723] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 09/12/2016] [Indexed: 11/09/2022] Open
Abstract
Printed organic thin-film transistors (OTFTs) are well suited for low-cost electronic applications, such as radio frequency identification (RFID) tags and sensors. Achieving both high carrier mobility and uniform electrical characteristics in printed OTFT devices is essential in these applications. Here, we report on printed high-performance OTFTs and circuits using silver nanoparticle inks for the source/drain electrodes and a blend of dithieno[2,3-d;2',3'-d']benzo[1,2-b;4,5-b']dithiophene (DTBDT-C6) and polystyrene for the organic semiconducting layer. A high saturation region mobility of 1.0 cm2 V-1 s-1 at low operation voltage of -5 V was obtained for relatively short channel lengths of 9 μm. All fifteen of the printed pseudo-CMOS inverter circuits were formed on a common substrate and operated at low operation voltage of 2 V with the total variation in threshold voltage of 0.35 V. Consequently, the printed OTFT devices can be used in more complex integrated circuit applications requiring low manufacturing cost over large areas.
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Abe H, Sumitani M, Uchida K, Matsui H, Yasunaga H, Yamada Y. Abstract PR181. Anesth Analg 2016. [DOI: 10.1213/01.ane.0000492580.78691.e9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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87
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Maruyama W, Shirakawa K, Matsui H, Matsumoto T, Yamazaki H, Sarca AD, Kazuma Y, Kobayashi M, Shindo K, Takaori-Kondo A. Classical NF-κB pathway is responsible for APOBEC3B expression in cancer cells. Biochem Biophys Res Commun 2016; 478:1466-71. [PMID: 27577680 DOI: 10.1016/j.bbrc.2016.08.148] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 08/26/2016] [Indexed: 01/05/2023]
Abstract
APOBEC3B (A3B) is a DNA cytosine deaminase and catalyzes cytosine deamination, resulting in mutations in genomic DNA. A3B is aberrantly expressed in a variety of cancers and considered to be a source of genomic mutations that contribute to cancer progression and metastasis. However, the mechanisms through which A3B expression is dysregulated in cancer cells are not fully elucidated. Here we report that the classical NF-κB pathway plays a crucial role in the transcriptional regulation of A3B in various cancer cells, including lymphoid malignancies. PMA, a strong activator of PKC, induces A3B at both mRNA and protein levels in cancer cell lines, and specific inhibitors of both PKC and IKK downregulate A3B expression. Using luciferase reporter and EMSA assays, we identify 3 NF-κΒ binding sites in the A3B promoter and reveal that NF-κB p65/p50 and p65/c-Rel heterodimers are important for A3B transcription. These results suggest that the classical NF-κB pathway is responsible for activation of A3B mRNA expression and further imply that inhibition of PKC and IKK might augment cancer treatment by reducing cancer progression and metastasis through downregulation of A3B expression.
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Zhang Q, Matsui H, Horiuchi H, Liang X, Sasaki K. A-Raf and C-Raf differentially regulate mechanobiological response of osteoblasts to guide mechanical stress-induced differentiation. Biochem Biophys Res Commun 2016; 476:438-444. [PMID: 27240957 DOI: 10.1016/j.bbrc.2016.05.141] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 05/26/2016] [Indexed: 11/26/2022]
Abstract
Regulation of osteoblast activity by mechanical stress is important for bone remodeling. However, the precise mechanotransduction mechanism that triggers the anabolic reaction of osteoblasts is largely unknown. In this study, we performed RNA interference (RNAi) screening to identify the signaling molecules upstream of ERK, which was responsible for osteogenesis. Of twenty-two mitogen-activated protein kinase (MAPK) kinase kinases (MAP3Ks), we identified A-Raf and C-Raf as upstream MAP3Ks of the mechanical stretch-activated ERK pathway. Subsequently we screened the mechanosensitive cation channel, and identified P2X7 as an upstream molecule of the ERK pathway. Intriguingly, P2X7 functioned as an upstream activator of A-Raf but not of C-Raf. Furthermore, A-Raf contributed to mechanical stretch-induced osteoblast differentiation. In contrast, C-Raf but not A-Raf protected osteoblasts from mechanical stretch-induced apoptosis. These results suggested that A-Raf and C-Raf were involved in mechanobiological osteogenesis in a distinct way: A-Raf was responsible for osteogenesis while C-Raf for anti-apoptotic protection and promotion.
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Matsui H, Sopko N, Reinhardt A, Kates M, Lough D, Liu X, Weyne E, Albersen M, Hannan J, Bivalacqua T. 073 Neurotoxic M1 Macrophages are Recruited to the Major Pelvic Ganglion by Increased TNF-alpha Following Bilateral Cavernous Nerve Injury. J Sex Med 2016. [DOI: 10.1016/j.jsxm.2016.02.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Matsui H, Sopko N, Weyne E, Reinhardt A, Kates M, Lough D, Liu X, Albersen M, Hannan J, Bivalacqua T. 024 TNF-alpha Inhibits Neurite Outgrowth from the Major Pelvic Ganglion by Inducing Apoptosis of Nitrergic Neurons Ex Vivo. J Sex Med 2016. [DOI: 10.1016/j.jsxm.2016.02.026] [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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91
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Matsui H, Sopko N, Weyne E, Kates M, Liu X, Hannan J, Bivalacqua T. PS-04-002 Increase in TNF-alpha leads to enhanced recruitment of neurotoxic M1 macrophages to the major pelvic ganglion following bilateral cavernous nerve injury. J Sex Med 2016. [DOI: 10.1016/j.jsxm.2016.03.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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92
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Weyne E, Matsui H, L Hannan J, Castiglione F, Liu X, Van der Aa F, J Bivalacqua T, Albersen M. PS-04-006 Osteopontin is a novel player in endogenous neuroregeneration after BCNI. J Sex Med 2016. [DOI: 10.1016/j.jsxm.2016.03.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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93
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Mito M, Matsui H, Yoshida T, Anami T, Tsuruta K, Deguchi H, Iwamoto T, Terada D, Miyajima Y, Tsuji N. Contactless electrical conductivity measurement of metallic submicron-grain material: Application to the study of aluminum with severe plastic deformation. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:053905. [PMID: 27250440 DOI: 10.1063/1.4950868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We measured the electrical conductivity σ of aluminum specimen consisting of submicron-grains by observing the AC magnetic susceptibility resulting from the eddy current. By using a commercial platform for magnetic measurement, contactless measurement of the relative electrical conductivity σn of a nonmagnetic metal is possible over a wide temperature (T) range. By referring to σ at room temperature, obtained by the four-terminal method, σn(T) was transformed into σ(T). This approach is useful for cylinder specimens, in which the estimation of the radius and/or volume is difficult. An experiment in which aluminum underwent accumulative roll bonding, which is a severe plastic deformation process, validated this method of evaluating σ as a function of the fraction of high-angle grain boundaries.
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Sopko N, Matsui H, Liu X, Burnett A, Bivalacqua T. HP-07-003 Ex-vivo mixed lymphocyte reaction model of human corporal tissue can be used to assess the effects of rejection on erectile function in the setting of penile transplantation. J Sex Med 2016. [DOI: 10.1016/j.jsxm.2016.03.142] [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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Sopko N, Matsui H, Lough D, Madsen C, Lee W, Redett R, Brandacher G, Burnett A, Bivalacqua T. 003 Novel Model of Ex-Vivo Mixed Lymphocyte Reaction to Assess the Effects of Rejection on Erectile Function in the Setting of Human Penile Transplantation. J Sex Med 2016. [DOI: 10.1016/j.jsxm.2016.02.005] [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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Sopko N, Matsui H, Kates M, Lough D, Liu X, Hannan J, Torga G, Bivalacqua T. PS-04-003 SDF-1 treatment promotes major pelvic ganglion neurite outgrowth by upregulating neurotrophic factor expression, which is blocked by AMD3100. J Sex Med 2016. [DOI: 10.1016/j.jsxm.2016.03.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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97
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Sopko N, Matsui H, Reinhardt A, Kates M, Lough D, Liu X, Hannan J, Bivalacqua T. 021 SDF-1 Treatment Promotes Neurite Outgrowth from the Major Pelvic Ganglion by Upregulating Neurotrophins. J Sex Med 2016. [DOI: 10.1016/j.jsxm.2016.02.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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98
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Sasabuchi Y, Yasunaga H, Matsui H, Lefor AK, Fushimi K. Prolonged propofol infusion for mechanically ventilated children. Anaesthesia 2016; 71:424-8. [PMID: 26874247 DOI: 10.1111/anae.13401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2016] [Indexed: 10/22/2022]
Abstract
We retrospectively analysed 30-day mortality and duration of intubation for 8016 children ventilated for three or more days, sedated with midazolam (n = 7716) or propofol (n = 300). We matched the propensity scores of 263 pairs of children. The propensity-matched 30-day mortality (95% CI) was similar: 17/263 (6.5%) with midazolam vs. 24/263 (9.1%) with propofol, p = 0.26. Weaning from mechanical ventilation of children sedated with midazolam was slower than weaning of children sedated with propofol, subhazard ratio (95% CI) 1.43 (1.18-1.73), p < 0.001.
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Mitsui C, Tanaka Y, Tanaka S, Yamagishi M, Nakahara K, Yano M, Sato H, Yamano A, Matsui H, Takeya J, Okamoto T. High performance oxygen-bridged N-shaped semiconductors with a stabilized crystal phase and blue luminescence. RSC Adv 2016. [DOI: 10.1039/c6ra00922k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Here, we describe an oxygen-bridged N-shaped π-electron core, dinaphtho[2,3-d:2′,3′-d′]benzo[1,2-b:4,5-b′]difuran (DNBDF), as a new entity of organic semiconducting materials.
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Kitada S, Yoshimura K, Miki K, Miki M, Hashimoto H, Matsui H, Kuroyama M, Ageshio F, Kagawa H, Mori M, Maekura R, Kobayashi K. Validation of a commercial serodiagnostic kit for diagnosing pulmonary Mycobacterium avium complex disease. Int J Tuberc Lung Dis 2015; 19:97-103. [PMID: 25519798 DOI: 10.5588/ijtld.14.0564] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING A commercial serodiagnostic kit for diagnosing pulmonary disease due to Mycobacterium avium complex (MAC-PD) was developed and launched in Japan in 2011. OBJECTIVE To evaluate the performance of this kit in routine clinical settings. METHODS In this retrospective single-centre study, data on serum levels of anti-glycopeptidolipid (GPL) core IgA antibody (U/ml) measured using the kit were analysed in patients diagnosed with MAC-PD according to American Thoracic Society criteria, in those with pulmonary tuberculosis (PTB) or pulmonary M. kansasii disease and in healthy volunteers. RESULTS The anti-GPL-core IgA antibody levels of serum were significantly higher (P < 0.0001) in patients with MAC-PD (n = 485) than in those with PTB (n = 133) or pulmonary M. kansasii disease (n = 23) or in healthy subjects (n = 265). When the cut-off level was set at 0.7 U/ml, the sensitivity and specificity were respectively 78.6% and 96.9%. Higher antibody levels were observed in patients with greater extent of disease on chest computed tomography (P < 0.0001). CONCLUSIONS The serodiagnostic kit revealed good sensitivity and specificity. The antibody levels may reflect disease activity. Additional work is needed to determine whether the diagnostic assay could be used in conjunction with current diagnostic criteria to improve the diagnosis of MAC-PD.
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