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Hotta A, Yagi Y, Hakata S, Tsumura Y, Shimizu M, Kukida A, Nakamoto A, Yoshikawa N, Oohira N, Tatekawa S. [Case of Leriche's syndrome treated with safe and effective analgesia after laparotomy by transversus abdominis plane block, rectus sheath block, and continuous wound infusion with ropivacaine]. MASUI. THE JAPANESE JOURNAL OF ANESTHESIOLOGY 2013; 62:1461-1465. [PMID: 24498784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Ultrasound-guided peripheral nerve blocks in the abdominal wall, such as transversus abdominis plane block (TAP block) and rectus sheath block, are now widely used. We report a case of Leriche's syndrome treated with safe and effective analgesia after laparotomy by abdominal wall block and continuous infusion. A 61-year-old man diagnosed with Leriche's syndrome underwent Y-graft replacement for an abdominal aortic aneurysm. Preoperative enhanced and 3-dimensional CTs showed many collateral arterial systems, especially in the right abdominal wall. It was suggested that the right internal iliac artery had been completely occluded, and the left one showed severe stenosis. After the induction of general anesthesia, we recognized collateral arteries through an ultrasound view as on preoperative CTs. We lowered the pulse repetition frequency more than usual in order not to injure them. We injected 0.1875% ropivacaine 60 ml as TAP block, and 20 ml as rectus sheath block. When the wound was closed, a catheter was passed through an 18-gauge Tuohy needle placed above the fascia along the supraumbilical site. After the operation, 0.2% ropivacaine was continuously delivered at a rate of 6 ml hr-1 through the catheter. We could provide the patient with effective analgesia after surgery.
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Sato A, Yoshikawa N, Kubo E, Kakuda M, Nishiuchi A, Kimoto Y, Takahashi Y, Kagota S, Shinozuka K, Nakamura K. Inhibitory effect of cordycepin on experimental hepatic metastasis of B16-F0 mouse melanoma cells. In Vivo 2013; 27:729-732. [PMID: 24292575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In a previous study performed by our group, we demonstrated that the water extract of Cordyceps sinensis (WECS) significantly prevented tumor metastasis from the spleen to the liver, using B16-F0 mouse melanoma cells as a model. In this study, we investigated the anti-metastatic activity of cordycepin (3'-deoxyadenosine), one of the components of WECS, using an identical model of mice injected with B16-F0 cells into the spleen. All mice inoculated with B16-F0 cells died due to liver metastases via the portal vein from the spleen. Control mice not administered cordycepin exhibited higher serum levels of alanine aminotransferase (ALT) due to damage to the liver by metastasized B16-F0 cells from the spleen, and survival times ranged from 17 to 22 days after tumor inoculation. Cordycepin was intraperitoneally administered to mice, and resulted in significantly lower serum ALT levels and longer survival times than those observed in control mice. Taken together, these results indicate that cordycepin may be the active ingredient in C. sinensis exerting an anti-metastatic effect, and may be a potential candidate anti-metastatic agent.
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Yoshikawa N, Shimbo T, Yoshioka Y, Yoshida K, Uesugi Y, Narumi Y. Sivelestat Sodium Hydrate Reduces Radiation-Induced Lung Injury in Mice by Inhibiting Neutrophil Elastase. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1695] [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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Okamoto S, Sakama T, Nakamura S, Niimura F, Sahin S, Ertan P, Evrengul H, Horasan G, Dede B, Berdeli A, Yildiz N, Cicek Deniz N, Asadov R, Yucelten D, Alpay H, Prado G, Schoeneman M, Mongia A, Paudyal B, Feygina V, Norin A, Hochman D, Tawadrous H, Bansilal V, Topaloglu R, Gulhan B, Bilginer Y, Celebi Tayfur A, Yildiz C, Ozaltin F, Duzova A, Ozen S, Aki T, Besbas N, Komaki F, Hamasaki Y, Ishikura K, Hamada R, Sakai T, Hataya H, Ogata K, Fukuzawa R, Ando T, Honda M, Malke A, Silska-Dittmar M, Soltysiak J, Blumczynski A, Ostalska-Nowicka D, Zachwieja J, Tabel Y, Oncul M, Elmas A, Kavaz A, Ozcakar ZB, Bulum B, Ekim M, Yalcinkaya F, Prikhodina L, Turpitko O, Dlin V, Gheith O, Alotaibi T, Nampoory N, Mosaad A, Halim M, Saied T, Abou Ateya H, Adel H, Mozarei I, Neir P, Hamasaki Y, Uemura O, Ishikura K, Ito S, Wada N, Hattori M, Ohashi Y, Tanaka R, Nakanishi K, Kaneko T, Honda M, Golovachova V, Odinets Y, Laszki-Szczachor K, Polak-Jonkisz D, Sobieszczanska M, Rusiecki L, Zwolinska D, Ninchoji T, Kaitoh H, Matsunoshita N, Nozu K, Nakanishi K, Yoshikawa N, Iijima K, Maglalang-Reed OM, Elises JS, Zamora MNV, Pasco P, Arejola-Tan A, Alparslan C, Dogan SM, Kose E, Elmas C, Kilinc S, Arslan N, Kebabci E, Karaca C, Yavascan O, Aksu N, Minson S, Munoz M, Vergara I, Mraz M, Vaughan R, Rees L, Olsburgh J, Calder F, Shroff R, Zaicova N, Kavaz A, Ozcakar ZB, Bulum B, Ekim M, Yalcinkaya F, Lavrenchuk O, Viktoria D, Savchenko V, Bagdasarova I, Doyon A, Bayazit A, Canpolat N, Duzova A, Kracht D, Litwin M, Ranchin B, Shroff R, Sozeri B, Wuhl E, Zeller R, Melk A, Querfeld U, Schaefer F, Sinha MD, Turner C, Booth CJ, Goldsmith DJA, Simpson JM. Paediatric nephrology - A. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft124] [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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Tanaka K, Hosozawa M, Kudo N, Yoshikawa N, Hisata K, Shoji H, Shinohara K, Shimizu T. The pilot study: sphingomyelin-fortified milk has a positive association with the neurobehavioural development of very low birth weight infants during infancy, randomized control trial. Brain Dev 2013; 35:45-52. [PMID: 22633446 DOI: 10.1016/j.braindev.2012.03.004] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Revised: 03/03/2012] [Accepted: 03/05/2012] [Indexed: 12/01/2022]
Abstract
AIM This study was a randomised control trial to examine the effects of sphingomyelin (SM), on the mental, motor and behavioural development of premature infants. PATIENTS AND METHODS Randomised, double-blind controlled trial, enroling infants born with a birth weight of less than 1500 g between January 2004 and October 2007 at Juntendo University Hospital, with follow-up to 18 months. Twenty-four preterm babies were randomly assigned; 12 were assigned to a test group and fed SM-fortified milk (SM 20% of all phospholipids in milk) and 12 were assigned to a control group (SM 13% of all phospholipids in milk). We analysed the composition of the plasma phospholipids and red-cell-membrane fatty acids, after which VEP, Fagan, BSID-II, attention and memory tests were performed. RESULTS The percentage of SM in the total phospholipids was significantly higher in the trial group than in the control group at 4, 6 and 8 weeks. The Behaviour Rating Scale of the BSID-II, the Fagan test scores, the latency of VEP, and sustained attention test scores at 18 months were all significantly better in the trial group than in the control group. CONCLUSION This study is the first to report that nutritional intervention via administration of SM-fortified milk has a positive association with the neurobehavioural development of low-birth-weight infants. However, detailed studies on the effects of SM on longer-term development are required.
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Inomata T, Yoshikawa N, Shimbo T, Takahashi M, Uesugi Y. The Excellent Biochemical Failure-free Survival Rate of High-dose-rate Brachytherapy Combined With External Beam Radiation Therapy in Patients With Prostate Cancer. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Yoshikawa N, Kajiyama H, Suzuki S, Umezu T, Mizuno M, Shibata K, Kikkawa F. M350 CLINICOPATHOLOGICAL CHARACTERISTICS AND PROGNOSIS IN EPITHELIAL OVARIAN CANCER OF YOUNG AGE. Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)61541-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Suzuki S, Yoshikawa N, Mizuno M, Kajiyama H, Shibata K, Nakatsura T, Kikkawa F. M332 GLYPICAN-3 COULD BE AN EFFECTIVE TARGET FOR IMMUNOTHERAPY COMBINED WITH CHEMOTHERAPY AGAINST OVARIAN CLEAR CELL CARCINOMA. Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)61523-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Mizuno M, Kajiyama H, Shibata K, Suzuki S, Yoshikawa N, Kikkawa F. M333 PROGNOSTIC IMPACT OF HISTOLOGICAL TYPE IN STAGE I EPITHELIAL OVARIAN CANCER BASED ON COMPREHENSIVE SURGICAL STAGING. Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)61524-0] [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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Savan R, Legiewicz M, McFarland A, Schwerk J, Bindewald E, Lin FC, Orr S, Yoshikawa N, Hegamyer G, Yalamanchili R, Ramakrishnan K, Kronfli A, Saleh B, McVicar D, Carrington M, Colburn N, Anderson S, Shapiro B, Le Grice S, Young H. MicroRNA-29 Stabilizes IFN-γ mRNA by inhibiting GW182 (174.5). THE JOURNAL OF IMMUNOLOGY 2012. [DOI: 10.4049/jimmunol.188.supp.174.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Tight regulation of interferon-gamma (IFN-γ) expression is critical for an optimal immune response. We have extensively studied the mechanisms responsible for the post-transcriptional regulation of IFN-γ expression. AU-rich element (ARE)-mediated decay (AMD) via the tristetraprolin (TTP) complex is responsible for robust degradation of the IFN-γ mRNA. We found that microRNA-29 (miR-29) targets the IFN-γ 3’UTR and, unlike the conventional inhibitory miRNAs, stabilizes the mRNA. Resolution of the secondary structure showed that the ARE and miR-29 binding site are in close proximity and a series of experiments manipulating the RNA structure revealed that this proximity enables miR-29 to antagonize TTP degradation. Interestingly, miR-29 is unable to degrade the mRNA even in the absence of TTP. Recently we have found that GW182, a major degradation protein in the miRISC, is unable to be recruited to the mRNA as a result of the location of the miR-29 binding site in the secondary structure. The ability of miR-29 to stabilize the IFN-γ mRNA demonstrates a novel molecular mechanism of miRNA regulation.
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Fujimoto Y, Nomura Y, Hirakawa K, Hotta A, Nakamoto A, Yoshikawa N, Ohira N, Tatekawa S. Flurbiprofen axetil provides a prophylactic benefit against mesenteric traction syndrome associated with remifentanil infusion during laparotomy. J Anesth 2012; 26:490-5. [PMID: 22382665 DOI: 10.1007/s00540-012-1368-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2011] [Accepted: 02/20/2012] [Indexed: 10/28/2022]
Abstract
PURPOSE Mesenteric traction syndrome (MTS) is caused by PGI(2) release during abdominal procedures and is often observed during abdominal surgery. We have demonstrated that MTS occurs more frequently in cases using remifentanil than in those that are not. The aim of this study was to assess the prophylactic benefit of flurbiprofen axetil on MTS in patients undergoing abdominal surgery using remifentanil. METHODS Thirty ASA physical status I and II patients were enrolled. They were scheduled to undergo abdominal surgery under general anesthesia with remifentanil and were randomly assigned to receive flurbiprofen axetil (group F) or saline (group C) preoperatively (n = 15 each). MTS was defined according to our simplified diagnostic criteria. Arterial blood pressure and heart rate were recorded, and the plasma 6-keto-PGF(1α) (a stable metabolite of PGI(2)) concentration was measured just before skin incision and at 20 and 60 min after skin incision (T(0), T(20), T(60)) to confirm the diagnosis of MTS. RESULTS Twelve of 15 (80%) patients developed MTS in group C, whereas only 1 of 15 (6.7%) patients in group F developed MTS. At T(20), the group C patients showed significantly lower arterial blood pressure (P < 0.05) and a faster heart rate (P < 0.01) than those in group F. The mean plasma 6-keto-PGF(1α) concentration was significantly elevated in group C at T(20) (P < 0.01), whereas the plasma 6-keto-PGF(1α) level remained low throughout the observation period in group F. CONCLUSIONS We found that preoperative administration of flurbiprofen axetil reduced the incidence of MTS during abdominal surgery with remifentanil analgesia.
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Ishibashi KI, Yoshida M, Nakabayashi I, Yoshikawa N, Miura NN, Adachi Y, Ohno N. Characterization of blood beta-1,3-glucan and anti-beta-glucan antibody in hemodialysis patients using culinary-medicinal Royal Sun Agaricus, Agaricus brasiliensis S. Wasser et al. (Agaricomycetideae). Int J Med Mushrooms 2012; 13:101-7. [PMID: 22135885 DOI: 10.1615/intjmedmushr.v13.i2.10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Beta-glucan is a major component of fungal cell walls and shows various immunopharmacological activities including antitumor activity. Previously, we detected anti-beta-glucan antibody in human sera. Anti-beta-glucan antibody participates in the immune response to fungal cell wall beta-glucan. Patients on dialysis are at high risk of infection including fungal infections. We examined the plasma beta-glucan level and the titer of anti-beta-glucan antibody in dialysis patients. We measured plasma beta-1,3-glucan concentrations with the limulus G test and anti-beta-glucan antibody titers by ELISA with Candida beta-glucan-coated plates. We also examined the influence of the period of dialysis and the kind of dialysis membrane. The patients were positive for beta-1,3-glucan in their plasma. The anti-beta-glucan antibody titer was lower in the dialysis patients than in healthy volunteers. Long-term dialysis patients showed lower anti-beta-glucan antibody titers than short-term dialysis patients. No significant difference was found between the kinds of dialysis membrane. The titer of anti-beta-glucan antibody as recognition molecule of beta-glucan was low in dialysis patients compared with healthy volunteers. This is likely to be one factor explaining the sensitivity to infection of the dialysis patients. An appropriate application of culinary-medicinal mushroom such as Agaricus brasiliensis has potential for the prevention of fungal infection in dialysis patients.
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Umeno Y, Shiihara Y, Yoshikawa N. Ideal shear strength under compression and tension in C, Si, Ge, and cubic SiC: an ab initio density functional theory study. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2011; 23:385401. [PMID: 21900737 DOI: 10.1088/0953-8984/23/38/385401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Ideal shear strength under superimposed normal stress of cubic covalent crystals (C, Si, Ge, and SiC) is evaluated by ab initio density functional theory calculation. Shear directions in [112] and [110] on the (111) plane are examined. The critical shear stress along the former direction is lower than that along the latter in all the crystals unless the hydrostatic tension is extremely high. In both the [112]-shear and [110]-shear, critical shear stress is increased by compression in C but is decreased in the other crystals. The different response of the critical shear stress to normal stress is due to the strength of the bond-order term, i.e., dependence of the short-range interatomic attraction on the bond-angle.
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Inomata T, Yoshikawa N, Shimbo T, Takahashi M, Uesugi Y, Narumi Y, Azuma H, Kariya S, Nishioka A, Ogawa Y. 7035 POSTER The Outcome of High Dose Rrate Brachytherapy Combined With External Beam Radiation Therapy in Patients With Prostate Cancer. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)71986-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Yoshikawa N, Yamabe S, Kanehisa N, Inoue T. Electronic structures in the triplet states of polypyridine iridium(III) complexes. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311083760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Choi HJ, Lim JS, Park EJ, Jung HJ, Lee YJ, Kwon TH, Cesar KR, Araujo M, de Braganca AC, Magaldi AJ, Freisinger W, Ditting T, Heinlein S, Schatz J, Veelken R, Burki R, Mohebbi N, Wang X, Serra A, Wagner C, Ditting T, Freisinger W, Rodionova K, Heinlein S, Schmieder R, Veelken R, Yano Y, Kudo LH, Magaldi AJ, Choi HJ, Yoon YJ, Lim JS, Hwang GS, Kwon TH, Jo CH, Kim S, Park JS, Lee CH, Kang CM, Kim GH, Kokeny G, Szoleczky P, Fang L, Rosivall L, Mozes MM, Freisinger W, Schatz J, Lampert A, Ditting T, Veelken R, Yano Y, Magaldi AJ, LEE WC, Wang YC, Chen JB, Santos C, Gomes AM, Ventura A, Almeida C, Seabra J, Daher E, Leite de Figueiredo P, Montenegro R, Montenegro R, Martins M, Bezerra da Silva G, Liborio A, Sromicki J, Matter S, Sitzmann K, Hess B, Lee J, Kim S, Lee JW, Oh YK, Na KY, Joo KW, Earm JH, Han JS, Ninchoji T, Kaito H, Nozu K, Hashimura Y, Nakanishi K, Yoshikawa N, Iijima K, Matsuo M, Gorini A, Addesse R, Comegna C, Galderisi C, Cecilia A, Tomaselli M, Di Lullo L, Polito P. Acid-base/Na, K, Cl. Experimental and clinical. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.26] [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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Stekrova J, Reiterova J, Elisakova V, Merta M, Kohoutova M, Tesar V, Suvakov S, Damjanovic T, Dimkovic N, Pljesa S, Savic-Radojevic A, Pljesa-Ercegovac M, Matic M, Djukic T, Coric V, Simic T, Gigante M, d'Altilia M, Montemurno E, Schirinzi A, Bruno F, Netti GS, Ranieri E, Stallone G, Infante B, Grandaliano G, Gesualdo L, Maritati F, Alberici F, Bonatti F, Oliva E, Sinico RA, Moroni G, Leoni A, Gregorini G, Jeannin G, Possenti S, Tumiati B, Grasselli C, Brugnano R, Salvarani C, Fraticelli P, Pavone L, Pesci A, Guida G, Neri TM, Buzio C, Malerba G, Martorana D, Vaglio A, Santucci L, Candiano G, Cremasco D, Tosetto E, Del Prete D, Bruschi M, Ghiggeri GM, Anglani F, Rainone F, Soldati L, Terranegra A, Arcidiacono T, Aloia A, Dogliotti E, Vezzoli G, Maruniak-Chudek I, Zenker M, Chudek J, Reiterova J, Obeidova L, Stekrova J, Lnenicka P, Tesar V, Iwanitskiy LV, Krasnova TN, Samokhodskaya LM, Bernasconi AR, Albarracin L, Liste AA, Politei JM, Heguilen RM, Kaito H, Nozu K, Nakanishi K, Hashimura Y, Shima Y, Ninchoji T, Yoshikawa N, Iijima K, Matsuo M, Hur E, Gungor O, Bozkurt D, Bozgul SMK, Caliskan H, Dusunur F, Basci A, Akcicek F, Duman S, Li Y, Wang C, Nan L, Hruskova Z, Brabcova I, Lanska V, Honsova E, Hanzal V, Borovicka V, Reiterova J, Rysava R, Zachoval R, Viklicky O, Tesar V, Miltenberger-Miltenyi G, Almeida E, Calado J, Carvalho F, Pereira S, Teixeira C, Jorge S, Viana H, Gomes da Costa A, Yang CS, Tseng MH, Yang SS, Lin SH. Genetic diseases and molecular genetics. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.28] [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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Morioka S, Yoshikawa N, Matsuo A, Hiyamizu M, Maeoka H. P14.15 The effect of transcranial direct current-stimulated motor imagery on the excitability of the anterior horn cell of spinal cord. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60443-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Yoshikawa N, Yamabe S, Kanehisa N, Inoue T, Takashima H, Tsukahara K. The key Cl−
ligand for metal-to-ligand charge transfer in mononuclear terpyridine ruthenium(II) and binuclear ruthenium(II) tetrapyridylpyrazine complexes. J PHYS ORG CHEM 2011. [DOI: 10.1002/poc.1863] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Yoshikawa N, Young MR, Hegamyer G, Baker AR, Santhanam AN, Wei Q, Colburn NH. Abstract 3079: Identification of the translational targets of tumor suppressor Pdcd4. Cancer Res 2011. [DOI: 10.1158/1538-7445.am2011-3079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Programmed-cell-death-4 (Pdcd4) is a novel protein that functions as a transformation suppressor. Pdcd4 deficiency renders mice susceptible to increased tumor multiplicity in initiation-promotion skin carcinogenesis. On the contrary transgenic expression of Pdcd4 in mice inhibits DMBA-TPA induced skin tumorigenesis and tumor progression. Pdcd4 interacts with translation initiation factors eIF4A and eIF4G to inhibit translation in an mRNA-specific fashion and consequently blocks pro-oncogenic events such as activation of activator protein-1 (AP-1)-dependent transcription, anchorage-independent transformation and invasion. Pdcd4 expression decreases during carcinogenesis in several human cancer sites including colon, esophagus, lung, pancreas and brain and its activation appears to be important in the mechanism by which some cancer therapeutic drugs work. While Pdcd4 is not mutationally inactivated, its expression is post translationally regulated. Pdcd4 expression is decreased during carcinogenesis by mechanisms involving microRNA-21 (miR21) inhibition of translation and by S6 kinase-dependent proteasome degradation. Loss of Pdcd4 has been shown to affect transcription of TIMP-2, MAP4K1, LOX and u-PAR.
Although the tumor suppressor Pdcd4 acts directly on the translation initiation complex, translational targets of Pdcd4 have yet to be identified. In order to identify and characterize functionally significant translational targets of tumor suppressor Pdcd4 when it inhibits translation during tumor promotion, tumorigenesis and invasion of malignant tumors, we knocked down Pdcd4 in T47D breast cancer cells. Loss of Pdcd4 increases cell migration and invasion as well as activity of luciferase reporters of AP-1-dependent transcription and translation initiation. To identify translational targets of Pdcd4, translationally active mRNA species were fractionated by sucrose gradient. Polyribosome bound mRNA fractions were pooled and analyzed for mRNA levels by microarray. Knockdown of Pdcd4 produced more than 2 fold increases in 14 mRNAs in the translationally active polyribosomal fractions compared to the control. The polysome shifts in Pdcd4 translational targets are being confirmed by quantitative RT-PCR and Western blot analysis of protein. Pdcd4 targets recently confirmed by quantitative RT-PCR are PPARGC1B and delta p73, both known to be oncogenic, as well as zinc finger protein ZNF281. The functional significance of these targets is being determined. Discovery of the mRNAs selectively targeted by Pdcd4 will facilitate the elucidation of the mechanism by which Pdcd4 suppresses tumorigenesis and may provide additional targets for intervention.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 102nd Annual Meeting of the American Association for Cancer Research; 2011 Apr 2-6; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2011;71(8 Suppl):Abstract nr 3079. doi:10.1158/1538-7445.AM2011-3079
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Shima Y, Nakanishi K, Kamei K, Togawa H, Nozu K, Tanaka R, Sasaki S, Iijima K, Yoshikawa N. Disappearance of glomerular IgA deposits in childhood IgA nephropathy showing diffuse mesangial proliferation after 2 years of combination/prednisolone therapy. Nephrol Dial Transplant 2011; 26:163-169. [DOI: 10.1093/ndt/gfq387] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Yoshikawa N, Nishiuchi A, Kubo E, Yamaguchi Y, Kunitomo M, Kagota S, Shinozuka K, Nakamura K. <i>Cordyceps sinensis</i> Acts As an Adenosine A<sub>3</sub> Receptor Agonist on Mouse Melanoma and Lung Carcinoma Cells, and Human Fibrosarcoma and Colon Carcinoma Cells. ACTA ACUST UNITED AC 2011. [DOI: 10.4236/pp.2011.24034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kubo E, Yoshikawa N, Kunitomo M, Kagota S, Shinozuka K, Nakamura K. Inhibitory effect of Cordyceps sinensis on experimental hepatic metastasis of melanoma by suppressing tumor cell invasion. Anticancer Res 2010; 30:3429-3433. [PMID: 20944118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We investigated the anti-metastatic activity of a water extract of Cordyceps sinensis (WECS) using a model of mice injected with B16-F0 mouse melanoma cells into the spleen. WECS administered intraperitoneally reduced the number of metastatic surface nodules of B16-F0 cells in the liver of C57BL/6Cr mice in a dose-dependent manner, and significantly prolonged their survival. To identify the mechanism of the anti-metastatic effect of WECS, we examined its effects on hepatocyte growth factor (HGF)-accelerated invasion of B16-F0 cells using a chemo-invasion assay in vitro. As a result, WECS reduced HGF-accelerated B16-F0 cell invasion in a concentration-dependent manner. These findings suggest that WECS exerts an anti-metastatic action, in part by inhibiting the HGF-accelerated tumor invasiveness of mouse melanoma cells.
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Yoshikawa N, Hirsch BE. Cochlear implantation in a patient with superficial siderosis: an update. Am J Otolaryngol 2010; 31:390-1. [PMID: 20015783 DOI: 10.1016/j.amjoto.2009.05.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2009] [Accepted: 05/06/2009] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The purpose of this study is to present follow-up on a previously reported case of successful cochlear implantation in a patient with superficial siderosis. STUDY DESIGN Retrospective case review. RESULTS For the first 6 years after implantation, the patient had maintained a successful result; however, she developed a progressive decline in the benefit from her implant. CONCLUSION Benefit from cochlear implants in patients with superficial siderosis is variable and may not be long standing.
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Young MR, Santhanam AN, Yoshikawa N, Colburn NH. Have tumor suppressor PDCD4 and its counteragent oncogenic miR-21 gone rogue? Mol Interv 2010; 10:76-9. [PMID: 20368367 DOI: 10.1124/mi.10.2.5] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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