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Hashino E, Kuboniwa M, Alghamdi SA, Yamaguchi M, Yamamoto R, Cho H, Amano A. Erythritol alters microstructure and metabolomic profiles of biofilm composed of Streptococcus gordonii and Porphyromonas gingivalis. Mol Oral Microbiol 2013; 28:435-51. [PMID: 23890177 DOI: 10.1111/omi.12037] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2013] [Indexed: 11/26/2022]
Abstract
The effects of sugar alcohols such as erythritol, xylitol, and sorbitol on periodontopathic biofilm are poorly understood, though they have often been reported to be non-cariogenic sweeteners. In the present study, we evaluated the efficacy of sugar alcohols for inhibiting periodontopathic biofilm formation using a heterotypic biofilm model composed of an oral inhabitant Streptococcus gordonii and a periodontal pathogen Porphyromonas gingivalis. Confocal microscopic observations showed that the most effective reagent to reduce P. gingivalis accumulation onto an S. gordonii substratum was erythritol, as compared with xylitol and sorbitol. In addition, erythritol moderately suppressed S. gordonii monotypic biofilm formation. To examine the inhibitory effects of erythritol, we analyzed the metabolomic profiles of erythritol-treated P. gingivalis and S. gordonii cells. Metabolome analyses using capillary electrophoresis time-of-flight mass spectrometry revealed that a number of nucleic intermediates and constituents of the extracellular matrix, such as nucleotide sugars, were decreased by erythritol in a dose-dependent manner. Next, comparative analyses of metabolites of erythritol- and sorbitol-treated cells were performed using both organisms to determine the erythritol-specific effects. In P. gingivalis, all detected dipeptides, including Glu-Glu, Ser-Glu, Tyr-Glu, Ala-Ala and Thr-Asp, were significantly decreased by erythritol, whereas they tended to be increased by sorbitol. Meanwhile, sorbitol promoted trehalose 6-phosphate accumulation in S. gordonii cells. These results suggest that erythritol has inhibitory effects on dual species biofilm development via several pathways, including suppression of growth resulting from DNA and RNA depletion, attenuated extracellular matrix production, and alterations of dipeptide acquisition and amino acid metabolism.
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Lee M, Cho H, Chung J, Hewitt S, Chay D, Kwon Y, Kim J. Expression of stress-induced phosphoprotein-1 (STIP-1) was associated with tumor progression and poor prognosis in epithelial ovarian cancer. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.371] [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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153
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Chay D, Cho H, Chung J, Hewitt S, Yim G, Nam E, Kim Y, Kim J. The expression of makorin ring finger protein 1 (MKRN1), pAKT, pmTOR, and PTEN in cervical neoplasia. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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154
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Cho H, Kim Y, No J, Kim K, Kim S. Clinical correlation of nodal yield and disease recurrence in patients with early-stage cervical cancer. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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155
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Lee C, Cho H, Chung J, Hewitt S, Yim G, Nam E, Kim S, Kim Y, Kim J. Loss of ARID1A/BAF250a expression is associated with cervical carcinogenesis and predicts shorter overall survival. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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156
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Cho H, Chay D, Chung J, Kim J, Hewitt S, Wu T, Kim T. Nanog-Tcl1a-Akt axis-induced tumor stem-like phenotype with immune evasion. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.175] [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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157
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Cho H, Ding H, Barber W, Iwanczyk J, Molloi S. TH-A-103-05: Characterization of An Energy-Resolved Photon-Counting Si Strip Detector for Breast CT Imaging. Med Phys 2013. [DOI: 10.1118/1.4815722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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158
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Ding H, Cho H, Masaki F, Barber W, Iwanczyk J, Molloi S. TH-A-103-04: Microcalcification and Mass Detection with a Photon-Counting Si Detector for Low Dose Breast Computed Tomography. Med Phys 2013. [DOI: 10.1118/1.4815720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Ng AL, Ding H, Cho H, Barber W, Iwanczyk J, Molloi S. TH-A-103-06: Radiation Dose Reduction with Optimal Energy Weighting for a Prototype Energy-Resolved Photon-Counting Si Strip Detector. Med Phys 2013. [DOI: 10.1118/1.4815723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Cho H, Ding H, Masaki F, Barber W, Iwanczyk J, Molloi S. TH-A-103-08: System Optimization of Spectral Breast CT Based On An Energy-Resolved Photon-Counting Si Strip Detector: A Simulation Study. Med Phys 2013. [DOI: 10.1118/1.4815725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Huh JY, Yi DY, Eo SH, Cho H, Park MH, Kang MS. HLA-A, -B and -DRB1 polymorphism in Koreans defined by sequence-based typing of 4128 cord blood units. Int J Immunogenet 2013; 40:515-23. [DOI: 10.1111/iji.12067] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 04/12/2013] [Accepted: 05/15/2013] [Indexed: 10/26/2022]
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Han SH, Ackerstaff E, Stoyanova R, Carlin S, Huang W, Koutcher JA, Kim JK, Cho G, Jang G, Cho H. Gaussian mixture model-based classification of dynamic contrast enhanced MRI data for identifying diverse tumor microenvironments: preliminary results. NMR IN BIOMEDICINE 2013; 26:519-532. [PMID: 23440683 PMCID: PMC3706205 DOI: 10.1002/nbm.2888] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 10/13/2012] [Accepted: 10/15/2012] [Indexed: 06/01/2023]
Abstract
Tumor hypoxia develops heterogeneously, affects radiation sensitivity and the development of metastases. Prognostic information derived from the in vivo characterization of the spatial distribution of hypoxic areas in solid tumors can be of value for radiation therapy planning and for monitoring the early treatment response. Tumor hypoxia is caused by an imbalance between the supply and consumption of oxygen. The tumor oxygen supply is inherently linked to its vasculature and perfusion which can be evaluated by dynamic contrast enhanced (DCE-) MRI using the contrast agent Gd-DTPA. Thus, we hypothesize that DCE-MRI data may provide surrogate information regarding tumor hypoxia. In this study, DCE-MRI data from a rat prostate tumor model were analysed with a Gaussian mixture model (GMM)-based classification to identify perfused, hypoxic and necrotic areas for a total of ten tumor slices from six rats, of which one slice was used as training data for GMM classifications. The results of pattern recognition analyzes were validated by comparison to corresponding Akep maps defining the perfused area (0.84 ± 0.09 overlap), hematoxylin and eosin (H&E)-stained tissue sections defining necrosis (0.64 ± 0.15 overlap) and pimonidazole-stained sections defining hypoxia (0.72 ± 0.17 overlap), respectively. Our preliminary data indicate the feasibility of a GMM-based classification to identify tumor hypoxia, necrosis and perfusion/permeability from non-invasively acquired, in vivo DCE-MRI data alone, possibly obviating the need for invasive procedures, such as biopsies, or exposure to radioactivity, such as positron emission tomography (PET) exams.
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Abe H, Mori T, Kawai Y, Itoi N, Tomida K, Cho H, Kubota Y, Umeda T, Tani T. Abstract P1-15-11: The Kampo medicine Goshajinkigan prevents docetaxel-related peripheral neuropathy in breast cancer patients. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p1-15-11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Although taxanes have become a key chemotherapeutic drug in breast cancer treatment. Taxanes inhibit the growth of cancer cells by disrupting the functioning of their microtubules; however, the microtubules of nerve cells are also affected by this process, which can cause neurological disorders. The Kampo medicine Goshajinkigan (GJG) is a traditional Japanese medicine that is used for the treatment of several neurological symptoms including pain and numbness, GJG is comprised of 10 herbs, each of which contains numerous active ingredients. Recently, GJG has been reported to prevent anticancer drug-induced peripheral neuropathy in colorectal cancer. We performed the present prospective randomized study to confirm the effects of GJG and mecobalamin (B12) against docetaxel (DOC)-associated peripheral neurotoxicity in breast cancer patients.
Patients and method: Between May 2007 and April 2011, 60 breast cancer patients were treated with DOC. Thirty-three patients (GJG group) received oral administration of 7.5 g/day GJG and 27 patients (B12 group) received oral administration of 1500 μg/day B12. The patients were treated with TC (75mg/m2 docetaxel and 600 mg/m2 cyclophosphamide) every 3 weeks for 4 cycles, docetaxel alone (100mg/m2) every 3 weeks for 4 cycles, and XT (900mg/m2 capecitabine administered orally twice a day on days 1–14 plus 60 mg/m2 docetaxel) every 3 weeks for 6 cycles. Peripheral neuropathy was evaluated during every course according to DEB-NTC (Neurotoxicity Criteria of Debiopharm), Common Terminology Criteria for Adverse Events (NCI-CTC) ver.3.0, and a visual analogue scale (VAS).
Results: The median age of the GJG group was 58 years old (35 to 70 years old), the B12 group was 55 years old (33 to 69 years old), and they were all females. For the regimens, in the GJG group, TC, DOC only, and XT were administered in 19 cases, 13 cases and 1 case, respectively. In the B12 group, they were 15 cases, 11 cases and 12 cases, respectively. The cumulative dose of DOC was 338.5 mg/m2 in the GJG group, and 340 mg/m2 in the B12 group. Peripheral neuropathy occurred significantly less frequently in the GJG group (39.3%) than the B12 group (88.9%) (p < 0.01). In the GJG group, grade 1 DEB-NTC was observed in 2 cases, grade 2 in 5 cases and grade 3 in 5 cases. Grade 1 NCI-CTC was observed in 7 cases, grade 2 in 6 cases. In the B12 group, grades 1, 2 and 3 DEB-NTC were observed in one case, 12 cases and 12 cases, respectively; and grades 1, 2 and 3 NCI-CTC were observed in 11 cases, 12 cases and one case. The mean VAS scores for numbness after chemotherapy were 2.7 in the GJG group and 4.9 in the B12 group (p < 0.01). The incidence of grade 2/3 peripheral neuropathy was lower in the GJG group than the B12 group. Peripheral neuropathy was significantly controlled in the GJG group.
Conclusion: The present study is the first prospective control study to prove the efficacy of GJG against docetaxel-induced peripheral neuropathy in breast cancer patients. Our findings suggest that DOC-associated peripheral neurotoxicity can be suppressed by the administration of GJG. It will be necessary to confirm the usefulness of GJG in larger prospective studies.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P1-15-11.
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Bang S, Yoo S, Yang TJ, Cho H, Hwang SW. Nociceptive and pro-inflammatory effects of dimethylallyl pyrophosphate via TRPV4 activation. Br J Pharmacol 2012; 166:1433-43. [PMID: 22300296 DOI: 10.1111/j.1476-5381.2012.01884.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND PURPOSE Sensory neuronal and epidermal transient receptor potential ion channels (TRPs) serve an important role as pain sensor molecules. While many natural and synthetic ligands for sensory TRPs have been identified, little is known about the endogenous activator for TRPV4. Recently, we reported that endogenous metabolites produced by the mevalonate pathway regulate the activities of sensory neuronal TRPs. Here, we show that dimethylallyl pyrophosphate (DMAPP), a substance produced by the same pathway is an activator of TRPV4. EXPERIMENTAL APPROACH We examined the effects of DMAPP on sensory TRPs using Ca²⁺ imaging and whole-cell electrophysiology experiments with a heterologous expression system (HEK293T cells transfected with individual TRP channels), cultured sensory neurons and keratinocytes. We then evaluated nociceptive behavioural and inflammatory changes upon DMAPP administration in mice in vivo. KEY RESULTS In the HEK cell heterologous expression system, cultured sensory neurons and keratinocytes, µM concentrations of DMAPP activated TRPV4. Agonistic and antagonistic potencies of DMAPP for other sensory TRP channels were examined and activation of TRPV3 by camphor was found to be inhibited by DMAPP. In vivo assays, intraplantar injection of DMAPP acutely elicited nociceptive flinches that were prevented by pretreatment with TRPV4 blockers, indicating that DMAPP is a novel pain-producing molecule through TRPV4 activation. Further, DMAPP induced acute inflammation and noxious mechanical hypersensitivities in a TRPV4-dependent manner. CONCLUSIONS AND IMPLICATIONS Overall, we found a novel sensory TRP acting metabolite and suggest that its use may help to elucidate the physiological role of TRPV4 in nociception and associated inflammation.
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Cho H, Moon S, Han K, Choi S, Lee S, Hong Y. 358 Appropriate Rest Time After Repetitive Sleep Deprivation Suppresses Apoptosis and Cell Proliferation in the Hippocampus. Ann Emerg Med 2012. [DOI: 10.1016/j.annemergmed.2012.06.390] [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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Yang FH, Zhang B, Zhou DJ, Bie L, Tom MW, Drummond DC, Nicolaides T, Mueller S, Banerjee A, Park JW, Prados MD, James DC, Gupta N, Hashizume R, Strohbehn GW, Zhou J, Fu M, Patel TR, Piepmeier JM, Saltzman WM, Xie Q, Johnson J, Bradley R, Ascierto ML, Kang L, Koeman J, Marincola FM, Briggs M, Tanner K, Vande Woude GF, Tanaka S, Klofas LK, Wakimoto H, Borger DR, Iafrate AJ, Batchelor TT, Chi AS, Madhankumar AB, Slagle-Webb B, Rizk E, Harbaugh K, Connor JR, Sarkar G, Curran GL, Jenkins RB, Kurozumi K, Ichikawa T, Onishi M, Fujii K, Ishida J, Shimazu Y, Date I, Ebsworth K, Walters MJ, Ertl LS, Wang Y, Berahovich RD, Zhang P, Powers JP, Liu SC, Al Omran R, Sullivan TJ, Jaen JC, Brown M, Schall TJ, Yusuke N, Shimizu S, Shishido-Hara Y, Shiokawa Y, Nagane M, Wang J, Sai K, Chen FR, Chen ZP, Shi Z, Zhang J, Zhang K, Han L, Chen L, Qian X, Zhang A, Wang G, Jia Z, Pu P, Kang C, Kong LY, Doucette TA, Ferguson SD, Hachem J, Yang Y, Wei J, Priebe W, Fuller GN, Qiao W, Rao G, Heimberger AB, Chen PY, Ozawa T, Drummond D, Santos R, Torre JD, Ng C, Lepe EL, Butowski N, Prados M, Bankiewicz K, James CD, Cheng Z, Gong Y, Ma Y, Muller-Knapp S, Knapp S, Wang J, Fujii K, Kurozumi K, Ichikawa T, Onishi M, Shimazu Y, Ishida J, Antonio Chiocca E, Kaur B, Date I, Yu JS, Judkowski V, Bunying A, Ji J, Li Z, Bender J, Pinilla C, Srinivasan V, Dombovy-Johnson M, Carson-Walter E, Walter K, Xu Z, Popp B, Schlesinger D, Gray L, Sheehan J, Keir ST, Friedman HS, Bigner DD, Kut C, Tyler B, McVeigh E, Li X, Herzka D, Grossman S, Lasky JL, Wang Y, Panosyan E, Meisen WH, Hardcastle J, Wojton J, Wohleb E, Alvarez-Breckenridge C, Nowicki M, Godbout J, Kaur B, Lee SY, Slagle-Webb B, Sheehan JM, Connor JR, Yin S, Kaluz S, Devi SN, de Noronha R, Nicolaou KC, Van Meir EG, Lachowicz JE, Demeule M, Che C, Tripathy S, Jarvis S, Currie JC, Regina A, Nguyen T, Castaigne JP, Zielinska-Chomej K, Mohanty C, Viktorsson K, Lewensohn R, Driscoll JJ, Alsidawi S, Warnick RE, Rixe O, deCarvalho AC, Irtenkauf S, Hasselbach L, Xin H, Mikkelsen T, Sherman JH, Siu A, Volotskova O, Keidar M, Gibo DM, Dickinson P, Robertson J, Rossmeisl J, Debinski W, Nair S, Schmittling R, Boczkowski D, Archer G, Bigner DD, Sampson JH, Mitchell DA, Miller IS, Didier S, Murray DW, Issaivanan M, Coniglio SJ, Segall JE, Al-Abed Y, Symons M, Fotovati A, Hu K, Wakimoto H, Triscott J, Bacha J, Brown DM, Dunn SE, Daniels DJ, Peterson TE, Dietz AB, Knutson GJ, Parney IF, Diaz RJ, Golbourn B, Picard D, Smith C, Huang A, Rutka J, Saito N, Fu J, Yao J, Wang S, Koul D, Yung WKA, Fu J, Koul D, Yao J, Wang S, Yuan Y, Sulman EP, Colman H, Lang FF, Yung WKA, Slat EA, Herzog ED, Rubin JB, Brown M, Carminucci AS, Amendolara B, Leung R, Lei L, Canoll P, Bruce JN, Wojton JA, Chu Z, Kwon CH, Chow LM, Palascak M, Franco R, Bourdeau T, Thornton S, Qi X, Kaur B, Kitange GJ, Mladek AC, Su D, Carlson BL, Schroeder MA, Pokorny JL, Bakken KK, Gupta SK, Decker PA, Wu W, Sarkaria JN, Colman H, Oddou MP, Mollard A, Call LT, Vakayalapati H, Warner SL, Sharma S, Bearss DJ, Chen TC, Cho H, Wang W, Hofman FM, Flores CT, Snyder D, Sanchez-Perez L, Pham C, Friedman H, Bigner DD, Sampson JH, Mitchell DA, Woolf E, Abdelwahab MG, Turner G, Preul MC, Lynch A, Rho JM, Scheck AC, Salphati L, Heffron TP, Alicke B, Barck K, Carano RA, Cheong J, Greve J, Lee LB, Nishimura M, Pang J, Plise EG, Reslan HB, Zhang X, GOuld SG, Olivero AG, Phillips HS, Zadeh G, Jalali S, Voce D, Wei Z, Shijun K, Nikolai K, Josh W, Clayton C, Bakhtiar Y, Alkins R, Burgess A, Ganguly M, Wels W, Hynynen K, Li YM, Jun H, Daniel V, Walter HA, Nakashima H, Nguyen TT, Shalkh I, Goins WF, Chiocca EA, Pyko IV, Nakada M, Furuyama N, Lei T, Hayashi Y, Kawakami K, Minamoto T, Fedulau AS, Hamada JI. LAB-EXPERIMENTAL (PRE-CLINICAL) THERAPEUTICS AND PHARMACOLOGY. Neuro Oncol 2012; 14:vi25-vi37. [PMCID: PMC3488776 DOI: 10.1093/neuonc/nos222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2023] Open
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Cho H, Moon S, Lee S, Choi S, Hong Y, Han K. 157 Clinical Feature of Patients With False Negative Diffusion-weighted MR Finding in Acute Ischemic Stroke: A Pilot Study. Ann Emerg Med 2012. [DOI: 10.1016/j.annemergmed.2012.06.134] [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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Agarwal NK, Chen CH, Cho H, Boulbès DR, Spooner E, Sarbassov DD. Rictor regulates cell migration by suppressing RhoGDI2. Oncogene 2012; 32:2521-6. [PMID: 22777355 PMCID: PMC3470753 DOI: 10.1038/onc.2012.287] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Rictor and its binding partner Sin1 are indispensable components of mTORC2 (mammalian Target of Rapamycin Complex 2). The mTORC2 signaling complex functions as the regulatory kinase of the distinct members of AGC kinase family known to regulate cell proliferation and survival. In the early chemotaxis studies in Dictyostelium, the rictor's ortholog has been identified as a regulator of cell migration. How rictor regulates cell migration is poorly characterized. Here we show that rictor regulates cell migration by controlling a potent inhibitor of Rho proteins known as the Rho-GDP dissociation inhibitor 2 (RhoGDI2). Based on our proteomics study we identified that the rictor-dependent deficiency in cell migration is caused by up-regulation of RhoGDI2 leading to a low activity of Rac and Cdc42. We found that a suppression of RhoGDI2 by rictor is not related to the Sin1 or raptor function that excludes a role of mTORC2 or mTORC1 in regulation of RhoGDI2. Our study reveals that rictor by suppressing RhoGDI2 promotes activity of the Rho proteins and cell migration.
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Choi B, Han G, Lim B, Cho H. P04.18. Current status of the dual medical license holders in Korea. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012. [PMCID: PMC3373385 DOI: 10.1186/1472-6882-12-s1-p288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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Ichiki M, Sakai Y, Nango M, Nakamura K, Matsui H, Cho H, Kitayama T, Sahara T, Otani N, Inoue Y, Miki Y. Experimental venous thrombi: MRI characteristics with histopathological correlation. Br J Radiol 2012; 85:331-8. [PMID: 22457401 DOI: 10.1259/bjr/37592039] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVES The purpose of this study was to evaluate the MRI characteristics of venous thrombus over set time thresholds with histopathological correlation in a porcine model. METHODS Inferior vena cava thrombi were induced in 12 pigs. MRI was performed in three pigs 2 h, 1 day, 3 days and 2 weeks after thrombus induction. RESULTS The MRI characteristics were analysed in correlation with histopathological findings. The thrombi after 2 hours, which consisted of red blood cells (RBCs), showed isointensity on T(1 )weighted images (T(1)WIs) and hyperintensity on both T(2 )weighted images (T(2)WIs) and diffusion-weighted images (DWIs). The mean apparent diffusion coefficient (ADC) value was 1.93 × 10(-3) mm(2) s(-1). The thrombi after Day 1, which consisted of RBCs and migrating neutrophils at the periphery, showed isointensity on T(1)WIs, slight hyperintensity on T(2)WIs and hypointensity on DWIs. The mean ADC value was 1.62 × 10(-3) mm(2) s(-1) [corrected]. The thrombi after Day 3, which consisted of RBCs and peripheral inflammatory cells including macrophages, showed isointensity with peripheral hyperintense regions on T(1)WIs and hypointensity on both T(2)WIs and DWIs. The mean ADC value was 1.67 × 10(-3) mm(2) s(-1). After 2 weeks, the thrombi, which revealed RBC lysis surrounded by granulation tissues, showed isointensity on T(1)WIs and hyperintensity on T(2)WIs and DWIs. The mean ADC value was 2.48 × 10(-3) mm(2) s(-1). CONCLUSION The temporal MRI characteristics seemed to be related to chemical and physical changes in RBC and organisation of granulation tissues. Free radicals generated by macrophages might also be related to some extent.
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Bang S, Yoo S, Yang TJ, Cho H, Hwang SW. 17(R)-resolvin D1 specifically inhibits transient receptor potential ion channel vanilloid 3 leading to peripheral antinociception. Br J Pharmacol 2012; 165:683-92. [PMID: 21718307 DOI: 10.1111/j.1476-5381.2011.01568.x] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND PURPOSE Transient receptor potential ion channel vanilloid 3 (TRPV3) is expressed in skin keratinocytes and plays an important role in thermal and chemical nociceptions in the periphery. The presence of TRPV3 inhibitors would improve our understanding of TRPV3 function and help to develop receptor-specific analgesics. However, little is known about physiological substances that specifically inhibit TRPV3 activity. Here, we investigated whether 17(R)-resolvin D1 (17R-RvD1), a naturally occurring pro-resolving lipid specifically affects TRPV3 activity. EXPERIMENTAL APPROACH We examined the effect of 17R-RvD1 on sensory TRP channels using Ca(2+) imaging and whole cell electrophysiology experiments in a HEK cell heterologous expression system, cultured sensory neurons and keratinocytes. We also examined changes in sensory TRP agonist-specific acute licking/flicking or flinching behaviours and mechanical and thermal pain behaviours using Hargreaves, Randall-Selitto and von Frey assay systems in the absence and presence of inflammation. KEY RESULTS We showed that 17R-RvD1 specifically suppresses TRPV3-mediated activity at nanomolar and micromolar concentrations. The voltage-dependence of TRPV3 activation by camphor was shifted rightwards by 17R-RvD1, which indicates its inhibitory mechanism is as a result of a shift in voltage-dependence. Consistently, TRPV3-specific acute pain behaviours were attenuated by locally injected 17R-RvD1. Moreover, the administration of 17R-RvD1 significantly reversed the thermal hypersensitivity that occurs during an inflammatory response. Knockdown of epidermal TRPV3 blunted these antinociceptive effects of 17R-RvD1. CONCLUSIONS AND IMPLICATIONS 17R-RvD1 is a novel natural inhibitory substance specific for TRPV3. The results of our behavioural studies suggest that 17R-RvD1 has acute analgesic potential via TRPV3-specific mechanisms.
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Kim S, Cho H, Lee D, Webster MJ. Association between SNPs and gene expression in multiple regions of the human brain. Transl Psychiatry 2012; 2:e113. [PMID: 22832957 PMCID: PMC3365261 DOI: 10.1038/tp.2012.42] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Identifying the genetic cis associations between DNA variants (single-nucleotide polymorphisms (SNPs)) and gene expression in brain tissue may be a promising approach to find functionally relevant pathways that contribute to the etiology of psychiatric disorders. In this study, we examined the association between genetic variations and gene expression in prefrontal cortex, hippocampus, temporal cortex, thalamus and cerebellum in subjects with psychiatric disorders and in normal controls. We identified cis associations between 648 transcripts and 6725 SNPs in the various brain regions. Several SNPs showed brain regional-specific associations. The expression level of only one gene, PDE4DIP, was associated with a SNP, rs12124527, in all the brain regions tested here. From our data, we generated a list of brain cis expression quantitative trait loci (eQTL) genes that we compared with a list of schizophrenia candidate genes downloaded from the Schizophrenia Forum (SZgene) database (http://www.szgene.org/). Of the SZgene candidate genes, we found that the expression levels of four genes, HTR2A, PLXNA2, SRR and TCF4, were significantly associated with cis SNPs in at least one brain region tested. One gene, SRR, was also involved in a coexpression module that we found to be associated with disease status. In addition, a substantial number of cis eQTL genes were also involved in the module, suggesting eQTL analysis of brain tissue may identify more reliable susceptibility genes for schizophrenia than case-control genetic association analyses. In an attempt to facilitate the identification of genetic variations that may underlie the etiology of major psychiatric disorders, we have integrated the brain eQTL results into a public and online database, Stanley Neuropathology Consortium Integrative Database (SNCID; http://sncid.stanleyresearch.org).
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Cho H, Jeon S, Kim GH, Shin JS, Kim CH, Noh Y, Seo SW, Na DL. Changes in Cortical Thickness in Early Onset Versus Late Onset Alzheimer's Disease: A Three-Year Longitudinal Study (P05.042). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p05.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Cho H, Chung J, Kim S, Chay D, Hewitt S, Kim J. The expression of antiapoptotic protein API5 in cervical neoplasias. Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2011.12.152] [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]
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Kim S, Vathipadiekal V, Kikuchi J, Mohapatra G, Cho H, Nam E, Kim S, Kim J, Kim Y, Birrer M. Role of synaptotagmin-like 2 (SYTL2) in ovarian cancer progression. Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2011.12.337] [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]
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Kim B, Conway C, Kris Y, Hewitt S, Cho H, Kim J. Influence of Nanog expression on prognosis of cervical cancer. Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2011.12.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Cho H. 2.117 POSTUROGRAPHIC EVALUATION OF DIZZINESS COMPLAINING PATIENTS UNDER SUSPICION TO DEVELOP PARKINSON'S DISEASE. Parkinsonism Relat Disord 2012. [DOI: 10.1016/s1353-8020(11)70490-4] [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: 10/14/2022]
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Venturi D, Sapsis TP, Cho H, Karniadakis GE. A computable evolution equation for the joint response-excitation probability density function of stochastic dynamical systems. Proc Math Phys Eng Sci 2011. [DOI: 10.1098/rspa.2011.0186] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
By using functional integral methods, we determine a computable evolution equation for the joint response-excitation probability density function of a stochastic dynamical system driven by coloured noise. This equation can be represented in terms of a superimposition of differential constraints, i.e. partial differential equations involving unusual limit partial derivatives, the first one of which was originally proposed by Sapsis & Athanassoulis. A connection with the classical response approach is established in the general case of random noise with arbitrary correlation time, yielding a fully consistent new theory for non-Markovian systems. We also address the question of computability of the joint response-excitation probability density function as a solution to a boundary value problem involving only one differential constraint. By means of a simple analytical example, it is shown that, in general, such a problem is undetermined, in the sense that it admits an infinite number of solutions. This issue can be overcome by completing the system with additional relations yielding a closure problem, which is similar to the one arising in the standard response theory. Numerical verification of the equations for the joint response-excitation density is obtained for a tumour cell growth model under immune response.
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Ionta V, Kapoor N, Messina E, Giacomello A, Marban E, Cho H. Embryonic Stem Cell Differentiation to Cardiac Pacemaker Cells by Transduction With a Single Transcription Factor. Heart Rhythm 2011. [DOI: 10.1016/j.hrthm.2011.09.040] [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: 10/15/2022]
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Hu YL, De Lay M, Rose SD, Carbonell WS, Aghi MK, Rose SD, Carbonell WS, De Lay M, Hu YL, Paquette J, Tokuyasu T, Tsao S, Chaumeil M, Ronen S, Aghi MK, Matlaf LA, Soroceanu L, Cobbs C, Soroceanu L, Matlaf L, Harkins L, Cobbs C, Garzon-Muvdi T, Rhys CA, Smith C, Kim DH, Kone L, Farber H, An S, Levchenko A, Quinones-Hinojosa A, Lemke D, Pfenning PN, Sahm F, Klein AC, Kempf T, Schnolzer M, Platten M, Wick W, Smith SJ, Rahman R, Rahman C, Barrow J, Macarthur D, Rose F, Grundy RG, Kaley TJ, Huse J, Karimi S, Rosenblum M, Omuro A, DeAngelis LM, de Groot JF, Kong LY, Wei J, Wang T, Piao Y, Liang J, Fuller GN, Qiao W, Heimberger AB, Jhaveri N, Cho H, Torres S, Wang W, Schonthal A, Petasis N, Louie SG, Hofman F, Chen TC, Yamada R, Sumual S, Buljan V, Bennett MR, McDonald KL, Weiler M, Pfenning PN, Thiepold AL, Jestaedt L, Gronych J, Dittmann LM, Jugold M, Kosch M, Combs SE, von Deimling A, Weller M, Bendszus M, Platten M, Wick W, Kwiatkowska A, Paulino V, Tran NL, Symons M, Stockham AL, Borden E, Peereboom D, Hu Y, Chaturbedi A, Hamamura M, Mark E, Zhou YH, Abbadi S, Guerrero-Cazares H, Pistollato F, Smith CL, Ruff W, Puppa AD, Basso G, Quinones-Hinojosa A, Monje M, Freret ME, Masek M, Fisher PG, Haddix T, Vogel H, Kijima N, Hosen N, Kagawa N, Hashimoto N, Fujimoto Y, Kinoshita M, Sugiyama H, Yoshimine T, Anneke N, Bob H, Pieter W, Arend H, William L, Eoli M, Calleri A, Cuppini L, Anghileri E, Pellegatta S, Prodi E, Bruzzone MG, Bertolini F, Finocchiaro G, Zhu D, Hunter SB, Vertino PM, Van Meir EG, Cork SM, Kaur B, Cooper L, Saltz JH, Sandberg EM, Van Meir EG, Burrell K, Hill R, Zadeh G, Parker JJ, Dionne K, Massarwa R, Klaassen M, Niswander L, Kleinschmidt-DeMasters BK, Waziri A, Jalali S, Wataya T, Salehi F, Croul S, Gentili F, Zadeh G, Jalali S, Foltz W, Burrell K, Lee JI, Agnihorti S, Menard C, Chung C, Zadeh G, Torres S, Jhaveri N, Wang W, Schonthal AH, Louie SG, Hofman FM, Chen TC, Elena P, Faivre G, Demopoulos A, Taillibert S, Rosenblum M, Omuro A, Kirsch M, Martin KD, Bertram A, uckermann O, Leipnitz E, Weigel P, Temme A, Schackert G, Geiger K, Gerstner E, Jennings D, Chi AS, Plotkin S, Kwon SJ, Pinho M, Polaskova P, Batchelor TT, Sorensen AG, Hossain MB, Gururaj AE, Cortes-Santiago N, Gabrusiewicz K, Yung WKA, Fueyo J, Gomez-Manzano C, Gil OD, Noticewala S, Ivkovic S, Esencay M, Zagzagg D, Rosenfeld S, Bruce JN, Canoll P, Chang JH, Seol HJ, Weeks A, Smith CA, Rutka JT, Georges J, Samuelson G, Misra A, Joy A, Huang Y, McQuilkin M, Yoshihiro A, Carpenter D, Butler L, Feuerstein B, Murphy SF, Vaghaiwalla T, Wotoczek-Obadia M, Albright R, Mack D, Lawn S, Henderson F, Jung M, Dakshanamurthy S, Brown M, Forsyth P, Brem S, Sadr MS, Maret D, Sadr ES, Siu V, Alshami J, Trinh G, Denault JS, Faury D, Jabado N, Nantel A, Del Maestro R. ANGIOGENESIS AND INVASION. Neuro Oncol 2011; 13:iii1-iii9. [PMCID: PMC3222963 DOI: 10.1093/neuonc/nor147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023] Open
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Pavel H, Ajeawung N, Faure R, Poirier D, Kamnasaran D, Ajeawung N, Joshi H, Kamnasaran D, Poirier D, Ajeawung N, Kamnasaran D, Lun X, Zemp F, Sun B, Stechishin O, Luchman A, Kelly JJ, Weiss S, Hamilton MG, Cairncross G, Senger DL, Bell J, McFadden G, Forsyth PA, Tzeng SY, Guerrero-Cazares H, Martinez EE, Young NP, Sunshine JC, Quinones-Hinojosa A, Green JJ, Lei L, D'Amico R, Sisti J, Leung R, Sonabend AM, Guarnieri P, Rosenfeld SS, Bruce JN, Canoll P, Baichwal VR, Reeves L, Chad BL, Zavitz KH, Beelen AP, Mather GG, Carlson RO, Manton C, Chandra J, Keir ST, Reardon DA, Saling JR, Gray LS, Bigner DD, Friedman HS, Zhang J, Brun J, Ogbomo H, Zemp F, Wang Z, Stojdl DJ, Lun X, Forsyth PA, Kong LY, Hatiboglu MA, Wei J, Wang Y, McEnery KA, Fuller GN, Qiao W, Davies MA, Priebe W, Heimberger AB, Amendolara B, Gil O, Lei L, Ivkovic S, Bruce J, Canoll P, Rosenfeld S, Finniss S, Perlstein B, Miller C, Okhrimenko H, Kazimirsky G, Cazacu S, Lemke N, Brodie S, Rempel SA, Rosenblum M, Mikkelsen T, Margel S, Brodie C, Guvenc H, Demir H, Gupta S, Mazumder S, Ray-Chaundhury A, Li T, Li C, Nakano I, Rahman R, Rahman C, Smith S, Macarthur D, Rose F, Shakesheff K, Grundy RG, Brenner AJ, Goins B, Bao A, Miller J, Trevino A, Zuniga R, Phillips WT, Gilg AG, Bowers KG, Toole BP, Maria BL, Leung GK, Sun S, Wong ST, Zhang XQ, Pu JK, Lui WM, Marino AM, Hussaini IM, Amos S, Simpson K, Redpath GT, Lyons C, Dipierro C, Grant GA, Wilson C, Salami S, Macaroni P, Li S, Park JY, Needham D, Bigner D, Dewhirst M, Ohlfest J, Gallardo J, Argawal S, Mittapalli R, Donelson R, Elmquist WF, Nicolaides T, Hariono S, Barkovich K, Hashizume R, Rowitch D, Weiss W, Sheer D, Baker S, Paugh B, Waldman T, Li H, Jones C, Forshew T, James D, Caroline H, Patrick R, Katrin L, Karl F, Ghazaleh T, Michael W, Albrecht V, Thorsteinsdottir J, Wagner E, Tonn JC, Ogris M, Schichor C, Charest G, Paquette B, Sanche L, Mathieu D, Fortin D, Qi X, Cuttitta F, Chu Z, Celerier J, Pakradouni J, Rixe O, Hashizume R, Gragg A, Muller S, Banerjee A, Phillips J, Prados M, Haas-Kogan D, Gupta N, James D, Florence L, Gwendoline VG, Veronique M, Robert K, Agarwal S, Mittapalli RK, Cen L, Carlson BL, Elmquist WF, Sarkaria JN, Sengupta S, Weeraratne SD, Rallapalli S, Amani V, Pierre-Francois J, Teider N, Rotenberg A, Cook J, Pomeroy SL, Jenses F, Cho YJ, Hjouj M, Last D, Guez D, Daniels D, Lavee J, Rubinsky B, Mardor Y, Serwer LP, Noble CO, Michaud K, Drummond DC, Ozawa T, Zhou Y, Marks JD, Bankiewicz K, Park JW, James D, Wang W, Cho H, Weintraub M, Jhaveri N, Torres S, Petasis N, Schonthal AH, Louie SG, Hofman FM, Chen TC, Grada Z, Hegde M, Schaffer DR, Ghazi A, Byrd T, Dotti G, Wels W, Heslop HE, Gottschalk S, Baker M, Ahmed N, Hamblett KJ, Kozlosky CJ, Liu H, Siu S, Arora T, Retter MW, Matsuda K, Hill JS, Fanslow WC, Diaz RJ, Etame A, Meaghan O, Mainprize T, Smith C, Hynynen K, Rutka J, Pradarelli J, Yoo JY, Kaka A, Alvarez-Breckenridge C, Pan Q, Chiocca EA, Teknos T, Kaur B, Lee SY, Slagle-Webb B, Sheehan JM, Connor JR, Cote J, Lepage M, Gobeil F, Fortin D, Kleijn A, Balvers R, Kloezeman J, Dirven C, Lamfers M, Leenstra S, See W, Tan IL, Nicolaides T, Pieper R, Jiang H, White E, Rios-Vicil CI, Yung WKA, Gomez-Manzano C, Fueyo J, Zemp FJ, McKenzie BA, Lun X, McFadden G, Forsyth PA, Mueller S, Yang X, Hashizume R, Gragg A, Smirnov I, Prados M, James DC, Phillips JJ, Berger MS, Rowitch DH, Gupta N, Haas-Kogan DH, D'Amico R, Lei L, Kennedy B, Rosenfeld SS, Canoll P, Bruce JN, Gopalakrishnan V, Das C, Taylor P, Kommagani R, Su X, Aguilera D, Thomas A, Wolff J, Flores E, Kadakia M, Alkins R, Broderson P, Sodhi R, Hynynen K, Chung SA, McDonald KL, Shen H, Day BW, Stringer BW, Johns T, Decollogne S, Teo C, Hogg PJ, Dilda PJ, Patel TR, Zhou J, Piepmeier JM, Saltzman WM, Vogelbaum MA, Agarwal S, Manchanda P, Ohlfest JR, Elmquist WF, Kitange GJ, Mladek AC, Carlson BL, Schroeder MA, Pokorny JL, Sarkaria JN, Ogbomo H, Lun X, Zhang J, McFadden G, Mody C, Forsyth P, Dasgupta T, Yang X, Hashizume R, Gragg A, Prados M, Nicolaides T, James CD, Haas-Kogan D, Madhankumar AB, Webb BS, Park A, Harbaugh K, Sheehan J, Connor JR. PRECLINICAL EXPERIMENTAL THERAPEUTICS AND PHARMACOLOGY. Neuro Oncol 2011. [DOI: 10.1093/neuonc/nor158] [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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Han SH, Song YK, Cho FH, Ryu S, Cho G, Song YQ, Cho H. Magnetic field anisotropy based MR tractography. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2011; 212:386-393. [PMID: 21875818 DOI: 10.1016/j.jmr.2011.07.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2011] [Revised: 07/19/2011] [Accepted: 07/26/2011] [Indexed: 05/31/2023]
Abstract
Non-invasive measurements of structural orientation provide unique information regarding the connectivity and functionality of fiber materials. In the present study, we use a capillary model to demonstrate that the direction of fiber structure can be obtained from susceptibility-induced magnetic field anisotropy. The interference pattern between internal and external magnetic field gradients carries the signature of the underlying anisotropic structure and can be measured by MRI-based water diffusion measurements. Through both numerical simulation and experiments, we found that this technique can determine the capillary orientation within 3°. Therefore, susceptibility-induced magnetic field anisotropy may be useful for an alternative tractography method when diffusion anisotropy is small at higher magnetic field strength without the need to rotate the subject inside the scanner.
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Carlson T, Cho H, Turret J, Dakin S. Psychoanatomy of visual attention: a unified account of quadrant and hemifield effects. J Vis 2011. [DOI: 10.1167/11.11.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Kawai Y, Abe H, Mori T, Cho H, Kubota Y, Umeda T, Kurumi Y, Tani T. New fluorescence imaging method for sentinel lymph node biopsy in patients with early breast cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e11578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Abe H, Kawai Y, Mori T, Cho H, Kubota Y, Umeda T, Kurumi Y, Tani T. Comparison of T-FEC therapy for HER2-negative breast cancer with TC6 cycle therapy. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e11513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Kim H, Kim M, Quan Y, Moon T, Mun J, Cho H, Park N, Moon W, Lee K, Kim H, Lee J, Ryoo H, Jung H. Novel anti-wrinkle effect of cosmeceutical product with new retinyl retinoate microsphere using biodegradable polymer. Skin Res Technol 2011; 18:70-6. [DOI: 10.1111/j.1600-0846.2011.00533.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Watanabe T, Cho H, Yoshikawa T, Tsuburaya A, Kobayashi O. Impact of c-kit mutations, including codons 557 and/or 558, on the recurrence-free survival after curative surgery in patients with GIST. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
12 Background: Recently, c-kit exon 11 deletions, including codons 557 and/or 558, have been reported to predict a worse prognosis in GIST patients. However, it is difficult to prove the correlation between genotype and tumor aggressiveness in the imatinib- adjuvant era because exon 11 mutations respond well to imatinib. In this study, we evaluated the impact of c-kit mutational status on recurrence-free survival (RFS) after resection of primary GIST. Methods: Clinical and pathological characteristics of 89 GIST patients in our single institution study were retrospectively analyzed. Tumors were categorized into 4 subgroups based on their mutational locations; A1: mutated codons including neither 557 nor 558, A2: either 557 or 558, B1: only 557 and 558, B2: both 557 and 558. All of the patients underwent curative surgery, and none received adjuvant imatinib. The median duration of follow-up was 49 months. Results: Tumors originated from the stomach (n=75/89, 84%), small intestine (n=10), and colorectum (n=4). Mutation subgroup B was associated with both Fletcher and Miettinen high-risk categories. The 2-year recurrence free survival rate for A1, A2, B1, B2, was 84.9%, 85.7%, 50%, 57%, respectively. Group B2 had a significantly worse RFS than groups A1 (p=0.0004) and A2 (p=0.0014). Multivariate analysis for RFS indicated that only the mutational subgroup was a significant prognostic factor (p=0.03, HR=2.42). Conclusions: C-kit mutations, including both 557 and 558, affected the RFS of GIST patients after curative surgery, but those including either 557 or 558 did not. Our results indicate that the locations of c-kit mutations are associated with PFS, and they may therefore affect the selection of candidates with GIST for adjuvant imatinib. No significant financial relationships to disclose.
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Cho H, Chun H, Keum B, Kim Y, Jeen Y, Seo Y, Lee H, Um S, Kim C, Ryu H. Ethanol-induced DNA damage and the expression of repair-related molecules in human gastric carcinoma AGS cells with use of an acid pump antagonist and proton pump inhibitor. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.30] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
30 Background: Proton pump inhibitor (PPI) inhibits gastric acid secretion by strongly suppressing H + / K +- ATPase of parietal cells and is a major drug for peptic ulcers and gastroesophageal reflux. Recently it was reported that PPI has antioxidant and anti- inflammatory effects as well as a powerful acid inhibitory effect. To analyze the DNA repair capacity from the antioxidant effect of acid pump antagonist (Revanex-RN) and proton pump inhibitor (Omeprazole-OP), this study examined ethanol-induced DNA damage and the expression of repair related molecules in human gastric cancer AGS cells pretreated with an acid pump antagonist and a proton pump inhibitor. Methods: AGS, a human gastric cancer cell line was obtained from ATCC, was treated with ethanol (0, 2, 4, 6, 8, 10%) during 1hr. MTT and Comet assay were performed to evaluate ethanol-induced DNA damage. The optimum concentration of ethanol which caused DNA damage was established. And AGS cells were cultured in proper concentration of RN or OP overnight. Then, these cells were treated with 5% ethanol during 1hr. DNA damage and recovery were represented the value of Olive tail moment in comet assay. Western blot was also performed to detect expression of DNA polymerase beta, APE/ref-1, PCNA, and GADD45. Results: The DNA damage of AGS cell depended upon ethanol concentration distinctly. Damaged cells showed up recovered tendency in the group treated with low dose RN or OP. In addition, DNA repair enzymes including DNA polymerase beta and APE/ref-1 which were associated with mechanism of base excision repair (BER) were increased. A relevant protein such as GADD45 was also increased significantly. Conclusions: PPI has capacity to recover damaged DNA, which is associated with increased expression of GADD45 directly. Therefore, PPI offers cancer prevention by reducing the level of DNA damage in the gastric mucosa. GADD45 is also likely to suggest that it could be used a major factor on the injury mechanism and an indicator of mucosal damage in stomach. Moreover, RN, an acid pump antagonist is expected to have the higher safety compared to the existing PPIs and considered to be equal to PPIs in terms of anti-cancer effect. No significant financial relationships to disclose.
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Kim E, Jeen Y, Cho H, Keum B, Kim Y, Lee H, Chun H, Kim C, Ryu H. Novel multiphoton microscopy probe and feasibility study for colon cancer: Probe on trace elements–related antioxidant. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
463 Background: Multiphoton microscopy (MPM) has gained increasing popularity during the past few years because of the distinct advantages over single-photon microscopy, which includes increased penetration depth and low out-of-focus photodamage. However, there had been no report on multiphoton probes for malignancy. Previous studies reported that Zn and Cu ions which are co-factor of antioxidants such as superoxide dismutase (SOD), altered in malignancy tissue. The aim of this study was to evaluate application of the multiphoton (MP) probe of Zn and Cu for colon cancer tissues. Methods: We monitored the Zn/Cu ions in the colon cancer cell lines with multiphoton probe Microscopy. The multiphoton probe AZn2+ (C38H38N6O3) and ACu+ (C34H47N3O3S4), we developed and obtained the patent on it, were stained in live cancer cell lines. The tissues of colon cancer, adenoma and normal mucosa were obtained by biopsy during colonoscopy. Then the tissues were stained with 20μM of the MP probes for Zn/Cu ions. The distribution and concentration of zinc and copper ions were monitored by MPM by following the change in MPEF along the depth of tissue. Results: The majority of Zn2+ and Cu+ ions distributed in cytosole. The average multi-photon excited fluorescence (MPEF) intensities due to Cu, Zn, and Cu/Zn ratio were remarkably different between the normal mucosa and adenoma/adenocarcinoma tissues. The Zn2+ content was significantly lower and the Cu2+ content was significantly higher to result in a much lower the Zn/Cu ratio in adenoma/adenocarcinoma than in normal mucosa tissues. Conclusions: We have obtained multiphoton microscopy images of normal and cancer cell lines as well as mucosa and adenoma/adenocarcinoma tissues labeled with newly developed MP probes AZn1 and ACu1. No significant financial relationships to disclose.
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Bang S, Yoo S, Yang TJ, Cho H, Kim YG, Hwang SW. Resolvin D1 attenuates activation of sensory transient receptor potential channels leading to multiple anti-nociception. Br J Pharmacol 2011; 161:707-20. [PMID: 20880407 DOI: 10.1111/j.1476-5381.2010.00909.x] [Citation(s) in RCA: 125] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND AND PURPOSE Temperature-sensitive transient receptor potential ion channels (thermoTRPs) expressed in primary sensory neurons and skin keratinocytes play a crucial role as peripheral pain detectors. Many natural and synthetic ligands have been found to act on thermoTRPs, but little is known about endogenous compounds that inhibit these TRPs. Here, we asked whether resolvin D1 (RvD1), a naturally occurring anti-inflammatory and pro-resolving lipid molecule is able to affect the TRP channel activation. EXPERIMENTAL APPROACH We examined the effect of RvD1 on the six thermoTRPs using Ca(2+) imaging and whole cell electrophysiology experiments using the HEK cell heterologous expression system, cultured sensory neurons and HaCaT keratinocytes. We also checked changes in agonist-specific acute licking/flicking or flinching behaviours and TRP-related mechanical and thermal pain behaviours using Hargreaves, Randall-Selitto and von Frey assay systems with or without inflammation. KEY RESULTS RvD1 inhibited the activities of TRPA1, TRPV3 and TRPV4 at nanomolar and micromolar levels. Consistent attenuations in agonist-specific acute pain behaviours by immediate peripheral administration with RvD1 were also observed. Furthermore, local pretreatment with RvD1 significantly reversed mechanical and thermal hypersensitivity in inflamed tissues. CONCLUSIONS AND IMPLICATIONS RvD1 was a novel endogenous inhibitor for several sensory TRPs. The results of our behavioural studies suggest that RvD1 has an analgesic potential via these TRP-related mechanisms.
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Stoyanova R, Ackerstaff E, Cho H, Koutcher J, Pollack A. DCE-MRI for Delineation of Hypoxic Regions in Prostate Tumors. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.799] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Cho H, Lee KH, Colquhoun AN, Evans SA. Invasive oral aspergillosis in a patient with acute myeloid leukaemia. Aust Dent J 2010; 55:214-8. [PMID: 20604767 DOI: 10.1111/j.1834-7819.2010.01219.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Aspergillosis (a fungal infection by an organism of the Aspergillus species) of the oral cavity is an uncommon condition which most frequently occurs in immunocompromised patients, such as those with haematological malignancies. In such patients, prolonged neutropenia secondary to chemotherapeutic agents enables the spread of invasive aspergillosis, which is unaffected by anatomical barriers. Early detection and treatment of the condition is essential to avoid more serious complications, such as disseminated infection, which results in increased morbidity and mortality. This case report describes a patient with acute myeloid leukaemia who developed localized invasive Aspergillus flavus of the palate. High-dose antifungal therapy was instituted along with surgical removal of the involved tissues. Aspergillosis of the palate was successfully eradicated with no long-term ill effects from the treatment. Management of invasive aspergillosis includes early aggressive antifungal medication combined with surgical removal of the involved tissues.
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194
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Ryu JJ, Yoo S, Kim KY, Park JS, Bang S, Lee SH, Yang TJ, Cho H, Hwang SW. Laser modulation of heat and capsaicin receptor TRPV1 leads to thermal antinociception. J Dent Res 2010; 89:1455-60. [PMID: 20935279 DOI: 10.1177/0022034510381394] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Er,Cr:YSGG lasers are used clinically in dentistry. The advantages of laser therapy include minimal thermal damage and the alleviation of pain. This study examined whether the Er,Cr:YSGG laser has in vivo and in vitro antinociceptive effects in itself. In capsaicin-evoked acute licking/shaking tests and Hargreaves tests, laser irradiation with an aerated water spray suppressed nociceptive behavior in mice. Laser irradiation attenuated TRPV1 activation by capsaicin in Ca(2+) imaging experiments with TRPV1-overexpressing cells and cultured trigeminal neurons. Therefore, the laser-induced behavioral changes are probably due to the loss of TRPV1 activity. TRPV4 activity was also attenuated, but limited mechanical antinociception by the laser was observed. The laser failed to alter the other receptor functions, which indicates that the antinociceptive effect of the laser is dependent on TRPV1. These results suggest that the Er,Cr:YSGG laser has analgesic effects via TRPV1 inhibition. Such mechanistic approaches may help define the laser-sensitive pain modality and increase its beneficial uses.
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195
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Kato H, Masui H, Hoshino M, Cho H, Ingólfsson O, Brunger MJ, Limão-Vieira P, Tanaka H. A-band methyl halide dissociation via electronic curve crossing as studied by electron energy loss spectroscopy. J Chem Phys 2010; 133:054304. [DOI: 10.1063/1.3464483] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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196
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Hwang S, Kim S, Park H, An Y, Cho H, Oh M, Oh J, Yoon S. Post-transcriptional effect of endocrine disruptors in mouse testicular Sertoli cells. Toxicol Lett 2010. [DOI: 10.1016/j.toxlet.2010.03.644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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197
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Sun D, Shim B, Jung J, Lee K, Kim H, Hong S, Kim S, Cho H. Markers of anaerobic glycolysis as predictive factor in neoadjuvant chemoradiotherapy of rectal cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.10573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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198
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Abe H, Umeda T, Mori T, Tanaka M, Kawai Y, Cho H, Kubota Y, Kurumi Y, Tani T. Indocyanine green fluorescence imaging system for sentinel lymph node biopsy in early breast cancer patients. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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199
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Cho H, Zhang X, Jung M, Kwon W, Jung J, Jeung H, Roh JK, Chung HC, Rha SY. C-met as a therapeutic target for metastatic potential of gastric cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e14568] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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200
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Müller-Rath R, Cho H, Siebert C, Miltner O. Klinische und ganganalytische Untersuchung einer valgisierenden Kniegelenkentlastungsorthese in der Therapie der medialen Gonarthrose. ZEITSCHRIFT FUR ORTHOPADIE UND UNFALLCHIRURGIE 2010; 149:160-5. [DOI: 10.1055/s-0030-1249794] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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