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Nawa N, Ishida H, Suginobe H, Katsuragi S, Baden H, Takahashi K, Narita J, Kogaki S, Ozono K. Analysis of public discourse on heart transplantation in Japan using social network service data. Am J Transplant 2018; 18:232-237. [PMID: 28980431 DOI: 10.1111/ajt.14527] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 08/28/2017] [Accepted: 09/21/2017] [Indexed: 01/25/2023]
Abstract
The clarification of public concerns regarding heart transplantation is important for improving low organ donation rates in Japan. In the present study, we used the Twitter data of 4986 tweets (between August 2015 and January 2016) and 1429 tweets (between April 2016 and May 2016) to analyze public discourse on heart transplantation in Japan and identify the reasons for low organ donation rates. We manually categorized all tweets relevant to heart transplantation into nine categories and counted the number of tweets in each category per month. During the study period, the most popular category of tweets was related to the media, followed by money (tweets questioning or even criticizing the high price of fundraising goals to go overseas for heart transplantations), while some tweets were misconceptions. We also conducted a sentiment analysis, which revealed that the most popular negative tweets were related to money, while the most positive tweets were related to reports on the favorable outcomes of recipients. Our results suggest that listening to concerns, providing correct information (particularly for some misconceptions), and emphasizing the outcomes of recipients will facilitate an increase in the number of people contemplating heart transplantation and organ donation.
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Gotoh N, Nagao K, Ishida H, Nakamitsu K, Yoshinaga K, Nagai T, Beppu F, Yoshinaga-Kiriake A, Watanabe H, Yanagita T. Metabolism of Natural Highly Unsaturated Fatty Acid, Tetracosahexaenoic Acid (24:6n-3), in C57BL/KsJ- db/ db Mice. J Oleo Sci 2018; 67:1597-1607. [DOI: 10.5650/jos.ess18167] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yokoyama T, Naka G, Ishida H, Kishi K, Ohashi Y, Kunitoh H. P3.01-055 The Usefulness of Liquid Biopsy for ctDNA in Patients with EGFR-Mutant NSCLC During and After Treatment with EGFR-TKIs. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tamura T, Sakai D, Sugimoto N, Tokunaga S, Tsuji A, Ishida H, Otsu S, Moriwaki T, Satake H, Uchino K, Matsumoto S, Baba E, Sato M, Taniguchi H, Kishimoto J, Boku N, Hyodo I, Muro K. Predictive value of primary tumor location: Results from randomized phase II study of panitumumab + irinotecan versus cetuximab + irinotecan in patients with KRAS exon2 wild-type metastatic colorectal cancer (WJOG6510G). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx393.109] [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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Hasegawa H, Okabayashi K, Tsuruta M, Koike J, Funahashi K, Yokomizo H, Yoshimatsu K, Kan H, Yamada T, Ishida H, Ishibashi K, Saida Y, Enomoto T, Katsumata K, Koda K, Ochiai T, Sakamoto K, Ogawa S, Itabashi M, Kameoka S. Updated survival results of FACT trial: Multicenter phase II trial of neoadjuvant chemotherapy with mFOLFOX6 for stage II/III rectal cancer with a T3/T4 tumor. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx393.033] [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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Shirasawa M, Ishida H. THE DIFFERENCE BETWEEN IDEAL AND REALITY OF WORK PERCEIVED BY SOCIAL WORKERS AT NURSING HOMES. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.3061] [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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Niikura T, Kobayashi A, Kawabe M, Katsuma A, Yamakawa T, Katsumata H, Mafune A, Nakada Y, Yamamoto I, Tanno Y, Ohkido I, Okumi M, Ishida H, Yamamoto H, Yokoo T, Tanabe K. Clinicopathologic Impact of Early Medullary Ray Injury in Patients Following Kidney Transplantation. Transplant Proc 2017; 49:78-83. [PMID: 28104164 DOI: 10.1016/j.transproceed.2016.10.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Previously, we explored the histopathologic characteristics of medullary ray injury (MRI) inducing interstitial fibrosis and tubular atrophy (IF/TA) to determine its etiologies, which include calcineurin inhibitor (CNI) toxicity and urologic complications. However, we did not examine the effects of these etiologies on long-term kidney allograft prognosis, because biopsy timing differed among cases. AIM We examined the influence of early MRI on kidney allograft prognosis using protocol biopsies taken within a 3-month time frame. METHODS We defined early MRI as tubular degeneration with interstitial edema or mild fibrosis localized to the medullary ray. We divided 53 protocol biopsies into 2 groups, with and without early MRI. Early MRI+ cases with isometric vacuolization were classified as CNI toxicity; those with Tamm-Horsfall protein in the interstitium and a thyroidlike appearance were classified as urinary tract system abnormalities; remaining cases were classified as "others." We compared changes in serum levels of creatinine (sCr) over 3 years and fibrosis extent at 1 year. RESULTS The sCr levels were significantly higher in the MRI+ group than the MRI- group at 3 years (P = .024). Examining the 3 MRI+ subgroups, only the MRI+ urinary tract system abnormalities group had significantly high sCr levels compared to the MRI- group (P = .019). The MRI+ group showed significant signs of IF/TA at 1 year. CONCLUSIONS Early MRI after kidney transplantation was significantly more likely to develop IF/TA at 1 year and had higher sCr levels at 3 years. In such cases, intervention might preserve graft function over the long term.
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Ito H, Ando T, Nakamura M, Ishida H, Kanbe A, Kobiyama K, Yamamoto T, Ishii KJ, Hara A, Seishima M, Ishikawa T. Induction of humoral and cellular immune response to hepatitis B virus (HBV) vaccine can be upregulated by CpG oligonucleotides complexed with Dectin-1 ligand. J Viral Hepat 2017; 24:155-162. [PMID: 27807909 DOI: 10.1111/jvh.12629] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 10/05/2016] [Indexed: 12/18/2022]
Abstract
A persistent hepatitis B virus (HBV) infection is characterized by a lack of or a weak immune response to HBV, which may be reflective of tolerance to HBV. Efficient induction of HBV-specific immune response leads to the clearance of HBV in patients with a chronic HBV infection. CpG oligodeoxynucleotides (ODN) has a powerful adjuvant effect in HBV vaccination. A recent report demonstrated that the immunization by B/K CpG ODN (K3) wrapped by the nonagonistic Dectin-1 ligand, schizophyllan (SPG), namely K3-SPG, was more effective in the induction of antigen-specific immune response than that by K3. In this study, we examined the efficacy of K3-SPG as a HBV vaccine adjuvant. Wild-type (WT) mice and HBV transgenic (HBV-Tg) mice were subcutaneously immunized with hepatitis B surface antigen (HBsAg) alone, HBsAg and K3, or HBsAg and K3-SPG. The vaccination with HBsAg and K3-SPG significantly enhanced humoral and cellular immune response to HBV antigen compared to the other vaccinations in WT and HBV-Tg mice. K3-SPG induced the accumulation of dendritic cells (DCs) into draining lymph node and the activation of DCs. The expression of cytokines and chemokines related to Th1 and Th2 responses was upregulated after the vaccination including with K3-SPG. In conclusion, these results indicated that the vaccination using K3-SPG may overcome tolerance even in patients with chronic HBV infection.
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Ishida H. Decay length of surface-state wave functions on Bi(1 1 1). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:015002. [PMID: 27830659 DOI: 10.1088/0953-8984/29/1/015002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We calculate the decay length in surface normal direction of the surface-state wave functions on a clean Bi(1 1 1) surface as a function of two-dimensional (2D) wave vector [Formula: see text] along the [Formula: see text] line. For this purpose, we perform a first-principles density functional theory (DFT) calculation for semi-infinite Bi(1 1 1) by employing the surface embedded Green's function technique. The decay length of the two surface bands is found to be ∼24 Bi bilayers at [Formula: see text], while it remains less than 5 Bi bilayers when [Formula: see text] is away from [Formula: see text] and [Formula: see text]. At [Formula: see text], the degenerate surface bands are split from the upper boundary energy of the projected bulk valence bands only by 5 meV. In spite of this, the decay length of these bands at [Formula: see text] is less than 10 Bi bilayers due to the large effective mass (small curvature) of the highest valence band in the surface normal direction.
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Nakamura M, Ishida H, Takiguchi S, Tanaka K, Marui Y. Pathologic Features of Parathyroid Glands Associated With the Pathogenesis of Long-lasting Persistent Hyperparathyroidism After Kidney Transplantation in Long-term Dialysis Patients. Transplant Proc 2016; 48:874-7. [PMID: 27234756 DOI: 10.1016/j.transproceed.2015.12.108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 12/30/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND Persistent hyperparathyroidism in kidney transplant recipients may be prolonged for a few years, and in these cases, parathyroidectomy is indicated even if graft function is satisfactory. The aim of this study was to characterize the parathyroid glands in long-term dialysis recipients and determine the pathogenesis of persistent hyperparathyroidism. METHODS We analyzed 44 parathyroid glands resected from 11 patients who underwent parathyroidectomy after kidney transplantation. The histopathologic types and weights of all the parathyroid glands were evaluated. RESULTS The mean dialysis period was 15.8 years, and the time from kidney transplantation to parathyroidectomy ranged from 3.5 to 89 months. Nodular hyperplasia was present in parathyroid glands in all cases. The mean glandular weight was 396.0 ± 299.0 mg, and the maximum glandular weight was 3200 mg. Seven patients who underwent parathyroidectomy >1 year after kidney transplantation (late PT) were compared with 4 patients who underwent parathyroidectomy within 10 months after transplantation (early PT). The maximum (442.9 vs 1503 mg; P = .018) and mean (312.5 ± 177.4 mg vs 1135.6 ± 977.7 mg; P = .001) glandular weights were significantly lower in patients who underwent late PT compared with those who received early PT. Based on the histopathologic type and glandular weight of each parathyroid gland, nodular hyperplasia in glands ≤150 mg was common in patients who underwent late PT. CONCLUSIONS The presence of nodular hyperplasia in parathyroid glands with a low weight may be involved in long-lasting persistent hyperparathyroidism in patients undergoing long-term dialysis.
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Sakaguchi H, Ishida H, Nitanda H, Yamazaki N, Kaneko K, Kobayashi K. Pharmacokinetic evaluation of intrapleural perfusion with hyperthermic chemotherapy using cisplatin in patients with malignant pleural effusion. Lung Cancer 2016; 104:70-74. [PMID: 28213004 DOI: 10.1016/j.lungcan.2016.12.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Revised: 12/10/2016] [Accepted: 12/20/2016] [Indexed: 10/20/2022]
Abstract
OBJECTIVES Malignant pleural effusion (MPE) has a poor prognosis. Most patients are treated with tube thoracostomy and sclerotherapy, although its success rate is around 64%. We have investigated intrapleural perfusion with hyperthermic chemotherapy (IPHC) using cisplatin in a study with a pharmacokinetic evaluation. METHODS Patients with MPE, performance status of 0-1, possibility of good lung expansion and Cr<1.2mg/dL were treated with IPHC. The circuit was filled with 2000mL of normal saline containing cisplatin at a dose of 80mg/m2. Under video-assisted thoracoscopic surgery, the thoracic cavity was filled and perfused at a speed of approximately 1L/min at a temperature of 43°C for 1h. Perfusion solution and plasma samples were periodically collected, and concentrations of protein-unbound (free) platinum, which was the active derivative of cisplatin, and total platinum were determined by flameless atomic absorption spectrometry. RESULTS Twenty patients with MPE (8 lung cancers, 7 mesotheliomas, and 5 others) were enrolled in this study. Rate of free platinum concentration relative to total platinum concentration in perfusion solution after 1hr IPHC at 43°C was 61.1±12.9%. Area under curve (AUC) of free platinum in the pleural space was calculated to be 26.3μg/mLxh, resulting in complete control of pleural effusion for 3 months after IHPC in all cases (95% confidence interval: 83-100%). While, absorption rate of total platinum from the pleural space was 33.8±17.0% (27.4±13.6mg/m2), and the maximum concentration of total platinum in serum was low, 0.66±0.31μg/mL, resulting in controllable side effects; grade 1 renal toxicity: 6 patients, grade 1 emesis: 7 patients. CONCLUSIONS IPHC with cisplatin showed favorable pharmacokinetic profiles for an optional treatment to control malignant pleural effusion.
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Matsumoto A, Jinno H, Ishida H, Hiraiwa K, Nakamura T, Ueyama Y, Saito J. Impact of Tumor-Infiltrating Lymphocytes in Breast Cancer Patients with Neoadjuvant Chemotherapy Depends on Subtypes. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw521.025] [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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Takashima A, Ishida H, Takeshita N, Kinoshita T. Effect of Pretreatment With Dienogest Before Hysteroscopic Surgery. J Minim Invasive Gynecol 2016; 22:S186-S187. [PMID: 27678986 DOI: 10.1016/j.jmig.2015.08.682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tsujimura K, Shirakawa H, Tokumoto T, Endou M, Wakai S, Ishida H, Tanabe K. Utility of the Japanese Glomerular Filtration Rate Equation in Estimating Glomerular Filtration Rate of Donor Kidney. Transplant Proc 2016; 48:734-7. [PMID: 27234724 DOI: 10.1016/j.transproceed.2015.12.118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 12/30/2015] [Indexed: 11/18/2022]
Abstract
BACKGROUND An equation for the estimated glomerular filtration rate (eGFR) is generally used for evaluating renal function in Japan. OBJECTIVE To assess the accuracy of the preoperative eGFR for estimating kidney donors' measured glomerular filtration rate (mGFR). METHODS Between April 2009 and August 2014, 91 Japanese living kidney donors were included in this study. The eGFR was calculated as follows: eGFR = 194 × serum creatinine(-1.094) × Age(-0.287) (and × 0.739 for women), and the mGFR was evaluated using inulin clearance. The preoperative eGFR was then compared with the mGFR. RESULTS Patients included 27 men and 64 women with a mean age of 56.8 ± 9.5 years (range, 36-79 years), mean body surface area of 1.56 ± 0.14 m(2) (range 1.27-1.92 m(2)), mean body mass index of 22.3 ± 2.3 kg/m(2) (range 14.0-27.0 kg/m(2)), and mean serum creatinine level of 0.66 ± 0.14 mg/dL (range 0.39-0.97 mg/dL). The mean eGFR was 81.3 ± 14.2 mL/min/1.73 m(2) (range 45.5-125.9 mL/min/1.73 m(2)), and the mean mGFR was 89.0 ± 15.5 mL/min/1.73 m(2) (range 45.4-130.7 mL/min/1.73 m(2)). The eGFR was significantly lower than the mGFR (P < .001). The correlation coefficient for the relationship between the eGFR and mGFR values was 0.503, and the mean difference between the 2 values was -7.8 (8.7%). CONCLUSIONS Although the eGFR correlated with the mGFR, the eGFR values did not accurately estimate the mGFR in living kidney donors. Therefore, it is necessary to evaluate the mGFR, especially in marginal kidney donors.
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Maeda H, Katase T, Sakai D, Takeuchi M, Kusumoto KI, Amano H, Ishida H, Abe K, Yamagata Y. A novel non-thermostable deuterolysin from Aspergillus oryzae. Biosci Biotechnol Biochem 2016; 80:1813-9. [PMID: 27050120 DOI: 10.1080/09168451.2016.1166933] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Three putative deuterolysin (EC 3.4.24.29) genes (deuA, deuB, and deuC) were found in the Aspergillus oryzae genome database ( http://www.bio.nite.go.jp/dogan/project/view/AO ). One of these genes, deuA, was corresponding to NpII gene, previously reported. DeuA and DeuB were overexpressed by recombinant A. oryzae and were purified. The degradation profiles against protein substrates of both enzymes were similar, but DeuB showed wider substrate specificity against peptidyl MCA-substrates compared with DeuA. Enzymatic profiles of DeuB except for thermostability also resembled those of DeuA. DeuB was inactivated by heat treatment above 80° C, different from thermostable DeuA. Transcription analysis in wild type A. oryzae showed only deuB was expressed in liquid culture, and the addition of the proteinous substrate upregulated the transcription. Furthermore, the NaNO3 addition seems to eliminate the effect of proteinous substrate for the transcription of deuB.
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Iizuka J, Hashimoto Y, Hashimoto Y, Kondo T, Takagi T, Nozaki T, Shimizu T, Akimoto T, Ishida H, Karasawa K, Tanabe K. Efficacy and Feasibility of Low-Dose Rate Brachytherapy for Prostate Cancer in Renal Transplant Recipients. Transplant Proc 2016; 48:910-3. [DOI: 10.1016/j.transproceed.2016.01.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 01/14/2016] [Indexed: 12/29/2022]
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Iizuka J, Hashimoto Y, Hashimoto Y, Kondo T, Takagi T, Nozaki T, Shimizu T, Akimoto T, Ishida H, Karasawa K, Tanabe K. Efficacy and Feasibility of Intensity-Modulated Radiation Therapy for Prostate Cancer in Renal Transplant Recipients. Transplant Proc 2016; 48:914-7. [DOI: 10.1016/j.transproceed.2016.01.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 01/14/2016] [Indexed: 01/20/2023]
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Iizuka J, Hashimoto Y, Kondo T, Takagi T, Inui M, Nozaki T, Omoto K, Shimizu T, Ishida H, Tanabe K. Robot-Assisted Radical Prostatectomy for Localized Prostate Cancer in Asian Renal Transplant Recipients. Transplant Proc 2016; 48:905-9. [DOI: 10.1016/j.transproceed.2016.01.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 01/14/2016] [Indexed: 11/29/2022]
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Okumi M, Toki D, Nozaki T, Shimizu T, Shirakawa H, Omoto K, Inui M, Ishida H, Tanabe K. ABO-Incompatible Living Kidney Transplants: Evolution of Outcomes and Immunosuppressive Management. Am J Transplant 2016; 16:886-96. [PMID: 26555133 DOI: 10.1111/ajt.13502] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 08/23/2015] [Accepted: 08/23/2015] [Indexed: 01/25/2023]
Abstract
ABO-incompatible living kidney transplantation (ABO-ILKT) has steadily become more widespread. However, the optimal immunosuppressive regimen for ABO-ILKT remains uncertain. We aimed to determine the longitudinal changes in the outcomes from ABO-ILKT compared with those from ABO-compatible living kidney transplantation (ABO-CLKT) over the last 25 years. Of 1195 patients who underwent living kidney transplantations (LKT) at our institute between 1989 and 2013, 1032-including 247 ABO-ILKT and 785 ABO-CLKT cases-were evaluated for graft survival, patient survival, infectious adverse events, and renal function. The patients were divided into four groups according to the transplantation era and ABO-compatibility. In the past decade, ABO-ILKT and ABO-CLKT recipients yielded almost equivalent outcomes with respect to the 9-year graft survival rates, which were 86.9% and 92.0%, respectively (hazard ratio [HR] 1.38, 95% confidence interval [CI] 0.59-3.22, p = 0.455). The graft survival rate for ABO-ILKT conducted between 2005 and 2013 was better than that for ABO-ILKT conducted between 1998 and 2004 (HR 0.30, 95% CI 0.13-0.72, p = 0.007). ABO-ILKT recipients showed substantial improvements in the graft survival rate over time. Graft survival was almost identical over the past decade, regardless of ABO-incompatibility. Currently, ABO-ILKT is an acceptable treatment for patients with end-stage renal disease.
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Maeda H, Sakai D, Kobayashi T, Morita H, Okamoto A, Takeuchi M, Kusumoto KI, Amano H, Ishida H, Yamagata Y. Three extracellular dipeptidyl peptidases found in Aspergillus oryzae show varying substrate specificities. Appl Microbiol Biotechnol 2016; 100:4947-58. [PMID: 26846741 DOI: 10.1007/s00253-016-7339-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 01/14/2016] [Accepted: 01/17/2016] [Indexed: 02/04/2023]
Abstract
Three extracellular dipeptidyl peptidase genes, dppB, dppE, and dppF, were unveiled by sequence analysis of the Aspergillus oryzae genome. We investigated their differential enzymatic profiles, in order to gain an understanding of the diversity of these genes. The three dipeptidyl peptidases were expressed using Aspergillus nidulans as the host. Each recombinant enzyme was purified and subsequently characterized. The enzymes displayed similar optimum pH values, but optimum temperatures, pH stabilities, and substrate specificities varied. DppB was identified as a Xaa-Prolyl dipeptidyl peptidase, while DppE scissile substrates were similar to the substrates for Aspergillus fumigatus DPPV (AfDPPV). DppF was found to be a novel enzyme that could digest both substrates for A. fumigatus DPPIV and AfDPPV. Semi-quantitative PCR revealed that the transcription of dppB in A. oryzae was induced by protein substrates and repressed by the addition of an inorganic nitrogen source, despite the presence of protein substrates. The transcription of dppE depended on its growth time, while the transcription of dppF was not affected by the type of the nitrogen source in the medium, and it started during the early stage of the fungal growth. Based on these results, we conclude that these enzymes may represent the nutrition acquisition enzymes. Additionally, DppF may be one of the sensor peptidases responsible for the detection of the protein substrates in A. oryzae environment. DppB may be involved in nitrogen assimilation control, since the transcription of dppB was repressed by NaNO3, despite the presence of protein substrates.
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Iqbal SM, Leonard C, Regmi SC, De Rantere D, Tailor P, Ren G, Ishida H, Hsu C, Abubacker S, Pang DS, Salo PT, Vogel HJ, Hart DA, Waterhouse CC, Jay GD, Schmidt TA, Krawetz RJ. Lubricin/Proteoglycan 4 binds to and regulates the activity of Toll-Like Receptors In Vitro. Sci Rep 2016; 6:18910. [PMID: 26752378 PMCID: PMC4707532 DOI: 10.1038/srep18910] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 11/30/2015] [Indexed: 01/03/2023] Open
Abstract
Proteoglycan 4 (PRG4/lubricin) is secreted by cells that reside in articular cartilage and line the synovial joint. Lubricin may play a role in modulating inflammatory responses through interaction with CD44. This led us to examine if lubricin could be playing a larger role in the modulation of inflammation/immunity through interaction with Toll-like receptors (TLRs). Human Embryonic Kidney (HEK) cells overexpressing TLRs 2, 4 or 5 and surface plasmon resonance were employed to determine if full length recombinant human lubricin was able to bind to and activate TLRs. Primary human synovial fibroblasts were also examined using flow cytometry and Luminex multiplex ELISA. A rat destabilization model of osteoarthritis (OA) was used to determine if lubricin injections were able to regulate pain and/or inflammation in vivo. Lubricin can bind to and regulate the activity of TLRs, leading to downstream changes in inflammatory signalling independent of HA. We confirmed these findings in vivo through intra-articular injections of lubricin in a rat OA model where the inhibition of systemic inflammatory signaling and reduction in pain were observed. Lubricin plays an important role in regulating the inflammatory environment under both homeostatic and tissue injury states.
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Yamazaki S, Ishida H, Shimizu D, Adachi K. Photochromic Properties of Tungsten Oxide/Methylcellulose Composite Film Containing Dispersing Agents. ACS APPLIED MATERIALS & INTERFACES 2015; 7:26326-26332. [PMID: 26552031 DOI: 10.1021/acsami.5b09310] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Tungsten oxide-based photochromic films which changed reversibly in air between colorless- transparent in the dark and dark blue under UV irradiation were prepared by using methylcellulose as a film matrix and polyols such as ethylene glycol (EG), propylene glycol (PG), and glycerin (Gly) as dispersing agents. Influence of the dispersing agents and water in the films on the photochromic behavior was systematically studied. Under UV irradiation, absorption bands around 640 and 980 nm increased and the coloring rate was the following order: Gly > EG > PG. An increase in the amounts of dispersing agents or water accelerated the coloring rate. By increasing the water content of the film, a new absorption peak appeared at ca. 775 nm and the Raman spectra indicated a shift of W-O-W stretching vibration to lower wavenumber which was due to the formation of hydrogen bonding. All absorption spectra were fit by three Lorentz functions, whose bands were ascribed to various packing of WO6 octahedra. After the light was turned off, the formation of W(5+) was stopped and bleaching occurred by the reaction with O2 in air to recover its original transparent state. We anticipate that the biodegradable photochromic films developed in this study can be applied in recyclable display medium and especially in detachable films for glass windows whose light transmission properties are changed by sunlight, i.e., for usage as an alternative of smart windows without applying voltage.
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73
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Yamada T, Koda K, Ishibashi K, Kato H, Nishimura G, Ooki S, Yoshimatsu K, Uchida E, Kan H, Kosugi C, Tanaka S, Kato R, Kouketsu S, Nakajima H, Maekawa H, Kobayashi M, Tsubaki M, Yokoyama M, Tanakaya K, Ishida H. 182P Phase II clinical trial of adjuvant chemotherapy with mFOLFOX6/XELOX for stage III colon cancer in Japanese subjects. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv523.43] [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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74
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Hasegawa J, Honda K, Wakai S, Shirakawa H, Omoto K, Okumi M, Ishida H, Tanabe K. Plasma Cell–Rich Rejection After Kidney Transplantation and the Role of Donor-Specific Antibodies: A Case Report and Review of the Literature. Transplant Proc 2015; 47:2533-6. [DOI: 10.1016/j.transproceed.2015.09.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 08/04/2015] [Accepted: 09/02/2015] [Indexed: 10/22/2022]
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75
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Suehiro T, Mizutani M, Ishida H, Kobara K, Hiroshi O, Takahashi H, Watanabe S. Comparison of muscle activity onset time during prone hip extension in persons with and without low back pain. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.1417] [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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