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Adhikari G, Adhikari P, de Souza EB, Carlin N, Choi S, Djamal M, Ezeribe AC, Ha C, Hahn IS, Jeon EJ, Jo JH, Joo HW, Kang WG, Kang W, Kauer M, Kim GS, Kim H, Kim HJ, Kim KW, Kim NY, Kim SK, Kim YD, Kim YH, Ko YJ, Kudryavtsev VA, Lee HS, Lee J, Lee JY, Lee MH, Leonard DS, Lynch WA, Maruyama RH, Mouton F, Olsen SL, Park BJ, Park HK, Park HS, Park KS, Pitta RLC, Prihtiadi H, Ra SJ, Rott C, Shin KA, Scarff A, Spooner NJC, Thompson WG, Yang L, Yu GH. Search for a Dark Matter-Induced Annual Modulation Signal in NaI(Tl) with the COSINE-100 Experiment. PHYSICAL REVIEW LETTERS 2019; 123:031302. [PMID: 31386435 DOI: 10.1103/physrevlett.123.031302] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Indexed: 06/10/2023]
Abstract
We present new constraints on the dark matter-induced annual modulation signal using 1.7 years of COSINE-100 data with a total exposure of 97.7 kg yr. The COSINE-100 experiment, consisting of 106 kg of NaI(Tl) target material, is designed to carry out a model-independent test of DAMA/LIBRA's claim of WIMP discovery by searching for the same annual modulation signal using the same NaI(Tl) target. The crystal data show a 2.7 cpd/kg/keV background rate on average in the 2-6 keV energy region of interest. Using a χ-squared minimization method we observe best fit values for modulation amplitude and phase of 0.0092±0.0067 cpd/kg/keV and 127.2±45.9 d, respectively.
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Adare A, Afanasiev S, Aidala C, Ajitanand NN, Akiba Y, Akimoto R, Al-Bataineh H, Alexander J, Alfred M, Al-Jamel A, Al-Ta'ani H, Angerami A, Aoki K, Apadula N, Aphecetche L, Aramaki Y, Armendariz R, Aronson SH, Asai J, Asano H, Aschenauer EC, Atomssa ET, Averbeck R, Awes TC, Azmoun B, Babintsev V, Bagoly A, Bai M, Baksay G, Baksay L, Baldisseri A, Bannier B, Barish KN, Barnes PD, Bassalleck B, Basye AT, Bathe S, Batsouli S, Baublis V, Bauer F, Baumann C, Baumgart S, Bazilevsky A, Belikov S, Belmont R, Bennett R, Berdnikov A, Berdnikov Y, Bhom JH, Bickley AA, Bjorndal MT, Blau DS, Boer M, Boissevain JG, Bok JS, Borel H, Boyle K, Brooks ML, Brown DS, Bryslawskyj J, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy JM, Butsyk S, Camacho CM, Campbell S, Canoa Roman V, Caringi A, Castera P, Chai JS, Chang BS, Chang WC, Charvet JL, Chen CH, Chernichenko S, Chi CY, Chiba J, Chiu M, Choi IJ, Choi JB, Choi S, Choudhury RK, Christiansen P, Chujo T, Chung P, Churyn A, Chvala O, Cianciolo V, Citron Z, Cleven CR, Cobigo Y, Cole BA, Comets MP, Conesa Del Valle Z, Connors M, Constantin P, Csanád M, Csörgő T, Dahms T, Dairaku S, Danchev I, Danley TW, Das K, Datta A, Daugherity MS, David G, Dayananda MK, Deaton MB, Dehmelt K, Delagrange H, Denisov A, d'Enterria D, Deshpande A, Desmond EJ, Dharmawardane KV, Dietzsch O, Ding L, Dion A, Do JH, Donadelli M, D'Orazio L, Drachenberg JL, Drapier O, Drees A, Drees KA, Dubey AK, Durham JM, Durum A, Dutta D, Dzhordzhadze V, Edwards S, Efremenko YV, Egdemir J, Ellinghaus F, Emam WS, Engelmore T, Enokizono A, En'yo H, Espagnon B, Esumi S, Eyser KO, Fadem B, Fan W, Feege N, Fields DE, Finger M, Finger M, Fleuret F, Fokin SL, Forestier B, Fraenkel Z, Frantz JE, Franz A, Frawley AD, Fujiwara K, Fukao Y, Fung SY, Fusayasu T, Gadrat S, Gainey K, Gal C, Gallus P, Garg P, Garishvili A, Garishvili I, Gastineau F, Ge H, Germain M, Glenn A, Gong H, Gong X, Gonin M, Gosset J, Goto Y, Granier de Cassagnac R, Grau N, Greene SV, Grim G, Grosse Perdekamp M, Gunji T, Guo L, Gustafsson HÅ, Hachiya T, Hadj Henni A, Haegemann C, Haggerty JS, Hagiwara MN, Hahn KI, Hamagaki H, Hamblen J, Han R, Hanks J, Harada H, Hartouni EP, Haruna K, Harvey M, Hasegawa S, Haseler TOS, Hashimoto K, Haslum E, Hasuko K, Hayano R, He X, Heffner M, Hemmick TK, Hester T, Heuser JM, Hiejima H, Hill JC, Hill K, Hobbs R, Hodges A, Hohlmann M, Hollis RS, Holmes M, Holzmann W, Homma K, Hong B, Horaguchi T, Hori Y, Hornback D, Hotvedt N, Huang J, Huang S, Hur MG, Ichihara T, Ichimiya R, Iinuma H, Ikeda Y, Imai K, Imrek J, Inaba M, Inoue Y, Iordanova A, Isenhower D, Isenhower L, Ishihara M, Isobe T, Issah M, Isupov A, Ivanishchev D, Iwanaga Y, Jacak BV, Javani M, Ji Z, Jia J, Jiang X, Jin J, Jinnouchi O, Johnson BM, Jones T, Joo KS, Jouan D, Jumper DS, Kajihara F, Kametani S, Kamihara N, Kamin J, Kaneta M, Kaneti S, Kang BH, Kang JH, Kang JS, Kanou H, Kapustinsky J, Karatsu K, Kasai M, Kawagishi T, Kawall D, Kawashima M, Kazantsev AV, Kelly S, Kempel T, Khachatryan V, Khanzadeev A, Kijima KM, Kikuchi J, Kim A, Kim BI, Kim C, Kim DH, Kim DJ, Kim E, Kim EJ, Kim HJ, Kim KB, Kim M, Kim SH, Kim YJ, Kim YK, Kim YS, Kincses D, Kinney E, Kiriluk K, Kiss Á, Kistenev E, Kiyomichi A, Klatsky J, Klay J, Klein-Boesing C, Kleinjan D, Kline P, Kochenda L, Kochetkov V, Komatsu Y, Komkov B, Konno M, Koster J, Kotchetkov D, Kotov D, Kozlov A, Král A, Kravitz A, Krizek F, Kroon PJ, Kubart J, Kunde GJ, Kurgyis B, Kurihara N, Kurita K, Kurosawa M, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Lai YS, Lajoie JG, Layton D, Lebedev A, Le Bornec Y, Leckey S, Lee B, Lee DM, Lee J, Lee KB, Lee KS, Lee MK, Lee SH, Lee SR, Lee T, Leitch MJ, Leite MAL, Leitgab M, Lenzi B, Leung YH, Lewis B, Lewis NA, Li X, Li X, Li XH, Lichtenwalner P, Liebing P, Lim H, Lim SH, Linden Levy LA, Liška T, Litvinenko A, Liu H, Liu MX, Lökös S, Love B, Lynch D, Maguire CF, Majoros T, Makdisi YI, Makek M, Malakhov A, Malik MD, Manion A, Manko VI, Mannel E, Mao Y, Mašek L, Masui H, Masumoto S, Matathias F, McCain MC, McCumber M, McGaughey PL, McGlinchey D, McKinney C, Means N, Mendoza M, Meredith B, Miake Y, Mibe T, Mignerey AC, Mihalik DE, Mikeš P, Miki K, Miller TE, Milov A, Mioduszewski S, Mishra DK, Mishra GC, Mishra M, Mitchell JT, Mitrovski M, Mitsuka G, Miyachi Y, Miyasaka S, Mohanty AK, Mohapatra S, Moon HJ, Moon T, Morino Y, Morreale A, Morrison DP, Morrow SI, Moss JM, Motschwiller S, Moukhanova TV, Mukhopadhyay D, Murakami T, Murata J, Mwai A, Nagae T, Nagamiya S, Nagashima K, Nagata Y, Nagle JL, Naglis M, Nagy MI, Nakagawa I, Nakamiya Y, Nakamura KR, Nakamura T, Nakano K, Nam S, Nattrass C, Nederlof A, Newby J, Nguyen M, Nihashi M, Niida T, Norman BE, Nouicer R, Novák T, Novitzky N, Nyanin AS, Nystrand J, Oakley C, O'Brien E, Oda SX, Ogilvie CA, Ohnishi H, Ojha ID, Oka M, Okada K, Omiwade OO, Onuki Y, Orjuela Koop JD, Osborn JD, Oskarsson A, Otterlund I, Ouchida M, Ozawa K, Pak R, Pal D, Palounek APT, Pantuev V, Papavassiliou V, Park BH, Park IH, Park J, Park S, Park SK, Park WJ, Pate SF, Patel L, Patel M, Pei H, Peng JC, Peng W, Pereira H, Perepelitsa DV, Peresedov V, Peressounko DY, PerezLara CE, Petti R, Pinkenburg C, Pisani RP, Proissl M, Purschke ML, Purwar AK, Qu H, Radzevich PV, Rak J, Rakotozafindrabe A, Ravinovich I, Read KF, Rembeczki S, Reuter M, Reygers K, Reynolds D, Riabov V, Riabov Y, Richardson E, Richford D, Rinn T, Roach D, Roche G, Rolnick SD, Romana A, Rosati M, Rosen CA, Rosendahl SSE, Rosnet P, Rowan Z, Rukoyatkin P, Runchey J, Ružička P, Rykov VL, Ryu SS, Sahlmueller B, Saito N, Sakaguchi T, Sakai S, Sakashita K, Sakata H, Sako H, Samsonov V, Sano M, Sano S, Sarsour M, Sato HD, Sato S, Sato T, Sawada S, Schmoll BK, Sedgwick K, Seele J, Seidl R, Semenov AY, Semenov V, Sen A, Seto R, Sharma D, Shea TK, Shein I, Shevel A, Shibata TA, Shigaki K, Shimomura M, Shohjoh T, Shoji K, Shukla P, Sickles A, Silva CL, Silvermyr D, Silvestre C, Sim KS, Singh BK, Singh CP, Singh V, Skoby MJ, Skutnik S, Slunečka M, Smith WC, Soldatov A, Soltz RA, Sondheim WE, Sorensen SP, Sourikova IV, Staley F, Stankus PW, Stenlund E, Stepanov M, Ster A, Stoll SP, Sugitate T, Suire C, Sukhanov A, Sullivan JP, Sun J, Sun Z, Sziklai J, Tabaru T, Takagi S, Takagui EM, Takahara A, Taketani A, Tanabe R, Tanaka KH, Tanaka Y, Taneja S, Tanida K, Tannenbaum MJ, Tarafdar S, Taranenko A, Tarján P, Tennant E, Themann H, Thomas D, Thomas TL, Tieulent R, Todoroki T, Togawa M, Toia A, Tojo J, Tomášek L, Tomášek M, Tomita Y, Torii H, Towell RS, Tram VN, Tserruya I, Tsuchimoto Y, Tsuji T, Tuli SK, Tydesjö H, Tyurin N, Ueda Y, Ujvari B, Vale C, Valle H, van Hecke HW, Vargyas M, Vazquez-Zambrano E, Veicht A, Velkovska J, Vértesi R, Vinogradov AA, Virius M, Vossen A, Vrba V, Vznuzdaev E, Wagner M, Walker D, Wang XR, Watanabe D, Watanabe K, Watanabe Y, Watanabe YS, Wei F, Wei R, Wessels J, White SN, Willis N, Winter D, Wolin S, Wong CP, Woody CL, Wright RM, Wysocki M, Xia B, Xie W, Xu C, Xu Q, Yamaguchi YL, Yamaura K, Yang R, Yanovich A, Yasin Z, Ying J, Yokkaichi S, Yoo JH, You Z, Young GR, Younus I, Yu H, Yushmanov IE, Zajc WA, Zaudtke O, Zelenski A, Zhang C, Zharko S, Zhou S, Zimamyi J, Zolin L, Zou L. Beam Energy and Centrality Dependence of Direct-Photon Emission from Ultrarelativistic Heavy-Ion Collisions. PHYSICAL REVIEW LETTERS 2019; 123:022301. [PMID: 31386493 DOI: 10.1103/physrevlett.123.022301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 04/27/2019] [Indexed: 06/10/2023]
Abstract
The PHENIX collaboration presents first measurements of low-momentum (0.4<p_{T}<3 GeV/c) direct-photon yields from Au+Au collisions at sqrt[s_{NN}]=39 and 62.4 GeV. For both beam energies the direct-photon yields are substantially enhanced with respect to expectations from prompt processes, similar to the yields observed in Au+Au collisions at sqrt[s_{NN}]=200. Analyzing the photon yield as a function of the experimental observable dN_{ch}/dη reveals that the low-momentum (>1 GeV/c) direct-photon yield dN_{γ}^{dir}/dη is a smooth function of dN_{ch}/dη and can be well described as proportional to (dN_{ch}/dη)^{α} with α≈1.25. This scaling behavior holds for a wide range of beam energies at the Relativistic Heavy Ion Collider and the Large Hadron Collider, for centrality selected samples, as well as for different A+A collision systems. At a given beam energy, the scaling also holds for high p_{T} (>5 GeV/c), but when results from different collision energies are compared, an additional sqrt[s_{NN}]-dependent multiplicative factor is needed to describe the integrated-direct-photon yield.
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Shee NK, Lee CJ, Kim HJ. Crystal structure of bis(benzoato-κO)[5,15-diphenyl-10,20-bis(pyridin-4-yl)porphyrinato-κ4
N,N′,N′′,N′′′]tin(IV). IUCRDATA 2019. [DOI: 10.1107/s2414314619007879] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
In the crystal structure of the title compound, [Sn(C42H26N6)(C7H5O2)2], the SnIV ion is located on a crystallographic inversion centre and is octahedrally coordinated with an N4O2 set. Four N atoms of the porphyrin ring form the equatorial plane while the axial positions are occupied by two O atoms from benzoate anions. The molecular packing of the title complex involves non-classical hydrogen bonds of the types C—H...O and C—H...N, leading to a three-dimensional network structure.
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Kim MK, Shee NK, Lee J, Yoon M, Kim HJ. Photoinduced electron transfer upon supramolecular complexation of (porphyrinato)Sn-viologen with cucurbit[7]uril. Photochem Photobiol Sci 2019; 18:1996-2002. [PMID: 31257380 DOI: 10.1039/c9pp00145j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The synthesis of (porphyrinato)Sn-viologen, 1, and its supramolecular complexation with cucurbit[7]uril (CB[7]) were studied. 1H NMR spectroscopic studies obviously reveal that 1 forms a 1 : 2 supramolecular complex with CB[7] through the inclusion of viologen moieties of 1 into the cavity of CB[7]. The cyclic voltammetric study supports that the binding affinity of the radical cation forms is comparable to that of the di-cation viologen toward CB[7]. The fluorescence arising from the porphyrin moiety is significantly quenched upon the complexation of 1 with CB[7]. The ps-time-resolved fluorescence and ns-transient absorption spectroscopic studies reveal that the photoinduced electron transfer (PET) between viologen and Sn(iv) porphyrin of 1 takes place from the first excited singlet (S1) state and the second excited triplet (T2) state of the porphyrin moiety upon complexation with CB[7], while the PET from the S1 state is negligible in the absence of CB[7].
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Roh HG, Kim EY, Kim IS, Lee HJ, Park JJ, Lee SB, Choi JW, Jeon YS, Park M, Kim SU, Kim HJ. A Novel Collateral Imaging Method Derived from Time-Resolved Dynamic Contrast-Enhanced MR Angiography in Acute Ischemic Stroke: A Pilot Study. AJNR Am J Neuroradiol 2019; 40:946-953. [PMID: 31097431 DOI: 10.3174/ajnr.a6068] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 04/12/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Assessment of the collateral status has been emphasized for appropriate treatment decisions in patients with acute ischemic stroke. The purpose of this study was to introduce a multiphase MRA collateral imaging method (collateral map) derived from time-resolved dynamic contrast-enhanced MRA and to verify the value of the multiphase MRA collateral map in acute ischemic stroke by comparing it with the multiphase collateral imaging method (MRP collateral map) derived from dynamic susceptibility contrast-enhanced MR perfusion. MATERIALS AND METHODS From a prospectively maintained registry of acute ischemic stroke, MR imaging data of patients with acute ischemic stroke caused by steno-occlusive lesions of the unilateral ICA and/or the M1 segment of the MCA were analyzed. We generated collateral maps using dynamic signals from dynamic contrast-enhanced MRA and DSC-MRP using a Matlab-based in-house program and graded the collateral scores of the multiphase MRA collateral map and the MRP collateral map independently. Interobserver reliabilities and intermethod agreement between both collateral maps for collateral grading were tested. RESULTS Seventy-one paired multiphase MRA and MRP collateral maps from 67 patients were analyzed. The interobserver reliabilities for collateral grading using multiphase MRA or MRP collateral maps were excellent (weighted κ = 0.964 and 0.956, respectively). The agreement between both collateral maps was also excellent (weighted κ = 0.884; 95% confidence interval, 0.819-0.949). CONCLUSIONS We demonstrated that the dynamic signals of dynamic contrast-enhanced MRA could be used to generate multiphase collateral images and showed the possibility of the multiphase MRA collateral map as a useful collateral imaging method in acute ischemic stroke.
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Lee SK, Baek J, Roh JY, Kim HJ. Clinical characteristics of pediatric cutaneous lupus erythematosus: experience from a tertiary referral center in Korea. Lupus 2019; 28:888-892. [DOI: 10.1177/0961203319851568] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The clinical characteristics of cutaneous lupus erythematosus (CLE) are well delineated in adults, but pediatric data, particularly in Asian populations, are limited. Therefore, we evaluated the characteristics of pediatric cases by retrospectively reviewing the medical records of children with CLE during a 15-year period in a tertiary care dermatology clinic in South Korea. The study included 21 children (8 males and 13 females), 4 of whom had neonatal lupus erythematosus (NLE). Among 17 patients with CLE, discoid lupus erythematosus (DLE) was most common (47.1%), followed by acute CLE (ACLE, 35.3%). All ACLE cases had systemic lupus erythematosus (SLE). Female predominance was conspicuous in ACLE/SLE (6/11 females versus 0/6 males), as was older age, whereas DLE and NLE showed near-equal sex distributions. The median age at the diagnosis of CLE was significantly higher in females than in males (15 years versus 4.5 years, p = 0.02). All patients with ACLE/SLE simultaneously showed skin and systemic symptoms from onset. The kidney was the most commonly involved organ. This study revealed unique characteristics of pediatric CLE, further warranting a comprehensive review among various ethnicities to understand the wide spectrum of CLE in the pediatric population.
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Lee JH, Kim HJ, Han KD, Han JH, Bang CH, Park YM, Lee JY, Lee SJ, Park YG, Lee YB. Incidence and prevalence of alopecia areata according to subtype: a nationwide, population-based study in South Korea (2006-2015). Br J Dermatol 2019; 181:1092-1093. [PMID: 31102412 DOI: 10.1111/bjd.18145] [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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Khan I, Rooh G, Rajaramakrishna R, Srisittipokakun N, Kim HJ, Kirdsiri K, Kaewkhao J. Luminescence characteristics of Sm 3+-doped lithium barium gadolinium silicate glasses for Orange LED's. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 214:14-20. [PMID: 30743072 DOI: 10.1016/j.saa.2019.01.086] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 12/29/2018] [Accepted: 01/29/2019] [Indexed: 06/09/2023]
Abstract
Traditional melt-quenching technique is adopted for synthesis of Sm2O3 doped lithium barium gadolinium silicate (LBGS: Li2O-BaO-Gd2O3-SiO2) glasses. These glass samples are characterized by different spectroscopic techniques under ambient conditions. Density and molar volume of the present LBGS glass samples increase with increasing Sm3+ ion-concentration. JO intensity parameters Ωλ (where λ = 2, 4 and 6) are evaluated by using Judd-Ofelt theory and Ω4 > Ω2 > Ω6 trend is observed. Furthermore, these parameters are used to evaluate radiative properties like radiative transition probability, branching ratio, radiative lifetime and stimulated emission cross-section for state 4G5/2 of Sm3+ ion. The measured color coordinates for the title glass fall within orange region of CIE diagram. For the present LBGS glasses, the correlated color temperature values are less than warm. The lifetime for the 4G5/2 decreases from 2.468 to 0.566 ms when concentration increases from 0.1 to 2.0 mol% of Sm3+ ions. The analysis of non-exponential behavior of the decay profile through Inokuti-Hirayama model for S = 6 indicates that the energy transfer between Sm3+ ions is due to dipole-dipole interactions. Further energy transfer parameters (Q), critical distance (Ro, Å) and donor-acceptor interaction parameters (CDA x 10-40 cm6/s) of Sm3+ ions doped LBGS glasses were evaluated and compared to other glasses. From the evaluated results it is suggested that the present novelty of the work emphasizes on new matrix LBGS doped with Sm3+ ions showing increasing energy transfer rate with increasing in concentration of Sm2O3 content indicating these glasses are potential candidate for orange-light emitting device applications.
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Jung H, Kim HJ, Lee YC, Kim HJ. Comparison of lateral and supine positions for tracheal extubation in children : A randomized clinical trial. Anaesthesist 2019; 68:303-308. [PMID: 30993350 DOI: 10.1007/s00101-019-0590-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 03/16/2019] [Accepted: 03/21/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND The lateral position is known to be advantageous for maintaining airway patency. This study compared the lateral and supine positions for tracheal extubation in pediatric patients when performing deep extubation. OBJECTIVE The hypothesis was that tracheal extubation in the lateral position would improve airway obstruction that often occurs immediately after extubation and can be a practical method. MATERIAL AND METHODS This prospective randomized trial was performed in operating rooms in a tertiary care hospital and included 92 patients (3-12 years old) undergoing elective strabismus surgery. The patients were randomly divided into two groups: deep extubation in the supine position (group S) and deep extubation in the lateral position (group L). Oxygen saturation (SpO2) and the incidence of stridor, laryngospasm, and coughing after tracheal extubation were assessed. RESULTS The mean ± standard deviation of the lowest SpO2 values within 5 min after extubation was significantly higher in group L (98.3 ± 2.1%) than in group S (96.8 ± 2.5%, mean difference 1.5, 95% confidence interval, CI 0.5-2.5, p = 0.003). The incidences of stridor and laryngospasm of group L were significantly lower than those of group S (1/45, 2% vs. 8/45, 18%, respectively; relative risk 1.9, 95% CI 1.4-2.7, p = 0.03). The incidence of desaturation and coughing were not significantly different between groups. CONCLUSION In pediatric patients deep extubation in the lateral position improved SpO2 and reduced the incidence of stridor and laryngospasm in the early emergence period when compared to extubation in the supine position.
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Yoo M, Kim S, Kim BS, Yoo J, Lee S, Jang HC, Cho BL, Son SJ, Lee JH, Park YS, Roh E, Kim HJ, Lee SG, Kim BJ, Kim MJ, Won CW. Moderate hearing loss is related with social frailty in a community-dwelling older adults: The Korean Frailty and Aging Cohort Study (KFACS). Arch Gerontol Geriatr 2019; 83:126-130. [PMID: 31003135 DOI: 10.1016/j.archger.2019.04.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/04/2019] [Accepted: 04/07/2019] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To determine whether hearing loss is associated with social frailty in older adults. METHODS Cross-sectional analysis of cohort study data. Hearing was measured using of Pure-tone audiometry. Hearing loss was determined based on the average of hearing thresholds at 0.5, 1, and 2 kHz in the ear that had better hearing. Social frailty was defined based on the summation of the following 5 social components (1. Neighborhood meeting attendance 2. Talking to friend(s) sometimes 3.Someone gives you love and affection 4. Living alone 5. Meeting someone every day). Participants who had no correspondence to the components were considered non-social frailty; those with 1-2 components were considered social prefrailty; and those having 3 or more components were considered social frailty. RESULTS The prevalence of non-social frailty, social prefrailty, social frailty was 27.6%, 60.7% and 11.7% respectively. Of the five questions, two components (Neighborhood meeting attendance and Presence of someone who shows love and affection to the participants) were associated with hearing loss (p < 0.001). Compared to non-social frailty, the odds ratio of social frailty for hearing loss was 2.24 (95% CI 1.48-3.38) after adjusting for age, residential area, economic status, smoking, depressive disorder and MMSE, and 2.17 (95% CI 1.43-3.30) after further adjustments with physical frailty. CONCLUSION Hearing loss was associated with social frailty even after controlling confounding factors even including physical frailty.
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Ha C, Adhikari G, Adhikari P, Barbosa de Souza E, Carlin N, Choi S, Djamal M, Ezeribe AC, Hahn IS, Jeon EJ, Jo JH, Joo HW, Kang WG, Kang W, Kauer M, Kim GS, Kim H, Kim HJ, Kim KW, Kim NY, Kim SK, Kim YD, Kim YH, Ko YJ, Kudryavtsev VA, Lee HS, Lee J, Lee JY, Lee MH, Leonard DS, Lynch WA, Maruyama RH, Mouton F, Olsen SL, Park BJ, Park HK, Park HS, Park KS, Pitta RLC, Prihtiadi H, Ra SJ, Rott C, Shin KA, Scarff A, Spooner NJC, Thompson WG, Yang L, Yu GH. First Direct Search for Inelastic Boosted Dark Matter with COSINE-100. PHYSICAL REVIEW LETTERS 2019; 122:131802. [PMID: 31012610 DOI: 10.1103/physrevlett.122.131802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Indexed: 06/09/2023]
Abstract
A search for inelastic boosted dark matter (IBDM) using the COSINE-100 detector with 59.5 days of data is presented. This relativistic dark matter is theorized to interact with the target material through inelastic scattering with electrons, creating a heavier state that subsequently produces standard model particles, such as an electron-positron pair. In this study, we search for this electron-positron pair in coincidence with the initially scattered electron as a signature for an IBDM interaction. No excess over the predicted background event rate is observed. Therefore, we present limits on IBDM interactions under various hypotheses, one of which allows us to explore an area of the dark photon parameter space that has not yet been covered by other experiments. This is the first experimental search for IBDM using a terrestrial detector.
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Park YM, Lee CK, Kim HJ. Gastrointestinal: Colon cast with segmental stricture following colonic ischemia. J Gastroenterol Hepatol 2019; 34:630. [PMID: 30592093 DOI: 10.1111/jgh.14550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 10/01/2018] [Accepted: 11/13/2018] [Indexed: 12/09/2022]
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Lee MJ, Shee NK, Son JI, Karthikeyan S, Jhee KH, Lee JY, Kim HJ. Supramolecular complexation of homocysteine and cysteine with cucurbit[7]uril. Supramol Chem 2019. [DOI: 10.1080/10610278.2019.1593414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Khan I, Rooh G, Rajaramakrishna R, Sirsittapokakun N, Kim HJ, Kaewkhao J, Kirdsiri K. Energy transfer phenomenon of Gd 3+ to excited ground state of Eu 3+ ions in Li 2O-BaO-Gd 2O 3-SiO 2-Eu 2O 3 glasses. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 210:21-29. [PMID: 30428428 DOI: 10.1016/j.saa.2018.11.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 10/29/2018] [Accepted: 11/03/2018] [Indexed: 06/09/2023]
Abstract
Li2O-BaO-Gd2O3-SiO2 glasses with different concentration of Eu3+ ions were developed by the traditional melt quenching technique and characterized via FTIR, absorption, excitation, emission and CIE color coordinates analysis for visible red emission application. The FTIR shows strong band at position 740 cm-1 which is attributed to Si-O-Si symmetric stretching mode. Density and molar volume of LBGSEu glasses increases with Eu3+ ions concentration. The covalent nature of bond between the Eu3+ ions and surrounding ligands was confirmed from the bonding parameter (δ). From absorption spectra JO-parameters and oscillator strength are evaluated for LBGSEu6 glass. From JO-parameters, Eu3+ ions have asymmetric coordination environment and stronger covalency. The phonon line PSB (22,522 cm-1) confirm the phonon energy ≈971 cm-1, that corresponds to the energy of one phonon associated with maximum energy of the vibrational mode couple to Eu3+ ions. Under 275 nm and 393 nm excitation, intense red emission was observed at 613 nm, we observe efficient energy transfer phenomena from Gd3+ → Eu3+ in these glasses. Increasing trend of IR with increasing concentration of Eu2O3 indicates the asymmetric environment around Eu3+ ions in LBGS. Moreover, from JO analysis, LBGS glasses have high capability for red laser device with high lasing power and energy extraction ratio. The fluorescence lifetimes show decreasing trend in lifetime with increasing concentration of Eu2O3 is due to radiative transition. From CIE color coordinate, the CIE color coordinates of LBGSEu6 glass fall in reddish region close to orange region and can be useful for optical display devices.
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Li YB, Shen CP, Yuan CZ, Adachi I, Aihara H, Al Said S, Asner DM, Aushev T, Ayad R, Badhrees I, Ban Y, Bansal V, Beleño C, Berger M, Bhardwaj V, Bhuyan B, Bilka T, Biswal J, Bondar A, Bozek A, Bračko M, Cao L, Červenkov D, Chen A, Cheon BG, Chilikin K, Cho K, Choi SK, Choi Y, Cinabro D, Cunliffe S, Di Carlo S, Doležal Z, Dong TV, Drásal Z, Eidelman S, Fast JE, Fulsom BG, Garg R, Gaur V, Gabyshev N, Garmash A, Giri A, Goldenzweig P, Greenwald D, Grube B, Hayasaka K, Hayashii H, Hsu CL, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs WW, Jia S, Jin Y, Joffe D, Joo KK, Karyan G, Kawasaki T, Kichimi H, Kim DY, Kim HJ, Kim JB, Kim KT, Kim SH, Kinoshita K, Kodyš P, Korpar S, Kotchetkov D, Križan P, Kroeger R, Krokovny P, Kumita T, Kuzmin A, Kwon YJ, Lee JY, Lee SC, Li LK, Li Gioi L, Libby J, Liventsev D, Lubej M, MacNaughton J, Masuda M, Matsuda T, Merola M, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Mussa R, Nakano E, Nakao M, Nath KJ, Nayak M, Niiyama M, Nishida S, Ono H, Onuki Y, Pakhlov P, Pakhlova G, Pal B, Pardi S, Park SH, Paul S, Pedlar TK, Pestotnik R, Piilonen LE, Popov V, Prencipe E, Russo G, Sakai Y, Salehi M, Sandilya S, Santelj L, Sanuki T, Savinov V, Schneider O, Schnell G, Schueler J, Schwanda C, Schwartz AJ, Seino Y, Senyo K, Sevior ME, Shibata TA, Shiu JG, Shwartz B, Solovieva E, Starič M, Sumihama M, Sumiyoshi T, Sutcliffe W, Takizawa M, Tanida K, Tao Y, Tenchini F, Trabelsi K, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Van Tonder R, Varner G, Wang B, Wang CH, Wang MZ, Wang P, Wang XL, Won E, Yang SB, Ye H, Yelton J, Yin JH, Yusa Y, Zhang ZP, Zhilich V, Zhukova V. First Measurements of Absolute Branching Fractions of the Ξ_{c}^{0} Baryon at Belle. PHYSICAL REVIEW LETTERS 2019; 122:082001. [PMID: 30932568 DOI: 10.1103/physrevlett.122.082001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 01/27/2019] [Indexed: 06/09/2023]
Abstract
We present the first measurements of absolute branching fractions of Ξ_{c}^{0} decays into Ξ^{-}π^{+}, ΛK^{-}π^{+}, and pK^{-}K^{-}π^{+} final states. The measurements are made using a dataset comprising (772±11)×10^{6} BB[over ¯] pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB e^{+}e^{-} collider. We first measure the absolute branching fraction for B^{-}→Λ[over ¯]_{c}^{-}Ξ_{c}^{0} using a missing-mass technique; the result is B(B^{-}→Λ[over ¯]_{c}^{-}Ξ_{c}^{0})=(9.51±2.10±0.88)×10^{-4}. We subsequently measure the product branching fractions B(B^{-}→Λ[over ¯]_{c}^{-}Ξ_{c}^{0})B(Ξ_{c}^{0}→Ξ^{-}π^{+}), B(B^{-}→Λ[over ¯]_{c}^{-}Ξ_{c}^{0})B(Ξ_{c}^{0}→ΛK^{-}π^{+}), and B(B^{-}→Λ[over ¯]_{c}^{-}Ξ_{c}^{0})B(Ξ_{c}^{0}→pK^{-}K^{-}π^{+}) with improved precision. Dividing these product branching fractions by the result for B^{-}→Λ[over ¯]_{c}^{-}Ξ_{c}^{0} yields the following branching fractions: B(Ξ_{c}^{0}→Ξ^{-}π^{+})=(1.80±0.50±0.14)%, B(Ξ_{c}^{0}→ΛK^{-}π^{+})=(1.17±0.37±0.09)%, and B(Ξ_{c}^{0}→pK^{-}K^{-}π^{+})=(0.58±0.23±0.05)%. For the above branching fractions, the first uncertainties are statistical and the second are systematic. Our result for B(Ξ_{c}^{0}→Ξ^{-}π^{+}) can be combined with Ξ_{c}^{0} branching fractions measured relative to Ξ_{c}^{0}→Ξ^{-}π^{+} to yield other absolute Ξ_{c}^{0} branching fractions.
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Ko YS, Nash O, Choi S, Kim HJ. Methanolic extract of Kigelia africana exhibits antiatherosclerotic effects in endothelial cells by downregulating RAGE and adhesion molecules. Trop Biomed 2019; 36:172-182. [PMID: 33597437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The Kigelia plant is used in African countries for its medicinal properties. Kigelia africana is an interesting example of a medicinal plant due to its pharmacological activities, including its anti-inflammatory effect. Atherosclerosis, the primary cause of cardiovascular disease, is related to lipoprotein oxidation, inflammation and immune responses involving the vascular endothelium and immune cells. Therefore, in this study we investigated the effects of Kigelia africana (Lam.) extract, focusing particularly on antiatherosclerotic effects in endothelial cells (ECs). The methanolic extract of Kigelia africana (MKA) showed no cytotoxicity on ECs at doses of 10~200 µg/ml. MKA reduced RAGE expression on oxLDL- or TNF-α-stimulated ECs in a dose dependent manner, showing significant inhibition at a concentration of 50 µg/ml. In addition, MKA significantly inhibited the oxLDL- or TNF-αinduced expression of vascular cell adhesion molecule-1 (VCAM-1) in ECs in a dose-dependent manner but did not affect intracellular adhesion molecule-1 (ICAM-1), resulting in downregulation of the migration and adhesion of THP-1 monocytes to ECs. These results suggest that MKA could be used for the treatment of atherosclerosis without cytotoxicity.
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Kim HJ, Dominici L, Rosenberg S, Pak LM, Poorvu PD, Ruddy K, Tamimi R, Schapira L, Come S, Peppercorn J, Borges V, Warner E, Vardeh H, Collins L, King T, Partridge A. Abstract GS6-01: Surgical treatment after neoadjuvant systemic therapy in young women with breast cancer: Results from a prospective cohort study. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-gs6-01] [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
Background
Young women are more likely than older women to present with higher stage breast cancer (BC) and may benefit to a greater extent from downstaging with neoadjuvant systemic treatment (NST). Young age is also associated with greater likelihood of pathologic complete response (pCR). Using a large prospective cohort of young women with BC, we investigated response to neoadjuvant therapy, eligibility for breast conserving surgery (BCS) pre- and post-NST, and surgical treatment.
Methods
The Young Women's Breast Cancer Study (YWS) is a multi-center cohort of women diagnosed with BC at age ≤40, that enrolled 1302 patients from 2006 to 2016. Disease characteristics and treatment information were obtained through medical record and central pathology review. Surgical recommendation before and after NST, conversion from BCS borderline/ineligible to BCS eligible, surgery, documented reasons for choosing mastectomy (MTX) among BCS eligible women, and final pathologic response were independently reviewed.
Results
Among 1302 women enrolled in YWS, 801 (62%) presented with unilateral stage I-III breast cancer and 317(40%) received NST. Median age was 36 years old (22-40). Pre-NST, 85/317 (27%) were BCS eligible, 49 (15%) were borderline, and 169 (53%) were not eligible (16 inflammatory breast cancer (IBC), 88 large tumor size /cosmetic, 48 diffuse calcifications, and 83 multicentricity). Among the 218 patients who were BCS ineligible/borderline pre-NST, 82 (38%) became eligible for BCS after NST. 4 patients who were BCS eligible pre-NST became ineligible. Of all patients eligible for BCS post-NST (n=163), 80 (49%) attempted BCS, 74 (93%) of whom were successful, and 83 (51%) chose MTX. Reasons for choosing MTX included: patient preference (38/83 (46%)), BRCA or TP53 mutation (31 (37%)), family history (3 (4%)), unknown (11 (13%)). On final pathology, 75 (24%) patients had pCR. Among patients who achieved a pCR, 48 (64%) underwent MTX, fewer than half (21/48 (44%)) were for anatomic indications (IBC, large tumor at diagnosis, diffuse calcifications, multicentric disease).
Conclusion
While NST doubled the proportion of young women eligible for BCS, nearly half chose MTX regardless of response to NST, mostly for personal preference or high-risk preventative reasons. These data highlight that surgical decision making among young women with breast cancer is often driven by factors beyond extent of disease and clinical response to therapy.
Table 1.Clinical-pathologic characteristicsCharacteristicsNumber%Pre NST surgical recommendation BCS eligible8526.8Borderline4915.5BCS ineligible16953.3Unknown144.4Clinical Response Complete20263.7Partial9229.0Stable30.9Progressing72.2Unknown134.1Pathologic Response pCR (No invasive or DCIS)7524No pCR24276Post NST Surgical recommendation BCS eligible16351.4BCS ineligible14445.4Unknown103.2Attempted surgery BCS8025.2MTX23674.1Unknown20.6Final Surgery BCS7423.3MTX24176unknown20.6
Citation Format: Kim HJ, Dominici L, Rosenberg S, Pak LM, Poorvu PD, Ruddy K, Tamimi R, Schapira L, Come S, Peppercorn J, Borges V, Warner E, Vardeh H, Collins L, King T, Partridge A. Surgical treatment after neoadjuvant systemic therapy in young women with breast cancer: Results from a prospective cohort study [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr GS6-01.
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Lee S, Ahn SH, Lee JW, Chung IY, Ko BS, Kim HJ, Kim J, Shon G, Son BH. Abstract P2-14-21: Not presented. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-14-21] [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
This abstract was not presented at the conference.
Citation Format: Lee S, Ahn SH, Lee JW, Chung IY, Ko BS, Kim HJ, Kim J, Shon G, Son BH. Not presented [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-14-21.
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Ahn S, Kim HJ, Kang E, Kim EK, Kim SH, Kim JH, Kim IA, Park SY. Abstract P4-04-10: Genomic profiling of multifocal breast cancer reveals inter-lesion heterogeneity. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p4-04-10] [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
Introduction: Multifocal breast cancers are common, and tend to show more aggressive clinical features than unifocal breast cancers. While each foci of multifocal breast cancers with similar histology shares the same hormone and ERBB2 receptor status in most cases, substantial genomic differences among lesions have been reported. We aimed to investigate the potential genomic differences between multifocal breast cancer lesions.
Materials and methods: Twenty-one patients with multifocal breast cancer documented in the resection specimen were included. We selected two lesions with the same histology from each of these 21 patients. Capture-based targeted next generation sequencing was performed using a cancer gene panel consisting of 170 genes for single nucleotide variants (SNV) and small insertions/deletions (Indel), and copy number alterations.
Results: The most frequent mutation was TP53 (38.1%), followed by PIK3CA (28.6%). Pathogenic mutations (SNV and Indel) were detected in 13 of 21 patients, of whom 11 shared oncogenic variants in the two lesions. The remaining two patients had different mutation results in TP53 and PIK3CA, respectively. Genomic heterogeneity of copy number alteration was observed in 6 (28.6%) of 21 patients, including difference of FGFR1 status in two patients and difference of FGFR2 status in one patient.
Conclusion: Despite similar histologic features of multifocal tumors, genomic inter-lesion heterogeneity was identified in about one-fourth of patients. The spatial genomic heterogeneity in multifocal breast cancers needs to be considered in representative sampling and molecular tests for personalized medicine.
Citation Format: Ahn S, Kim HJ, Kang E, Kim E-K, Kim SH, Kim JH, Kim IA, Park SY. Genomic profiling of multifocal breast cancer reveals inter-lesion heterogeneity [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P4-04-10.
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Gwark SC, Kim J, Kim YH, Kim MS, Park JY, Lee SB, Sohn G, Chung IY, Ko BS, Kim HJ, Lee JW, Son BH, Ahn SH. Abstract P6-09-09: Analysis of serial circulating tumor cell count during neoadjuvant systemic therapy in breast cancer patients. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p6-09-09] [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
Background: We aimed to evaluate the clinical implication of circulating tumor cell (CTC) counts in correlation with prognosis and radiologic/pathologic response to therapy in locally advanced breast cancer patients undergoing preoperative systemic therapy.
Methods: From Feb 2014 to May 2017, 207 patients without distant metastasis were prospectively enrolled from AMC. CTC counts were analyzed before-during-after the therapy. CTC isolation was performed using a SMART BIOPSY™ SYSTEM Isolation kit (Cytogen, Inc., Seoul, Korea). Recurrence-free and overall survival was analyzed according to CTC counts.
Result: The mean follow-up period was 22.46 months and mean age was 46.48 years. One or more CTC was identified in 132 of 203 patients(65.0%) before NST, in 135 of 186 patients(72.0%) during NST and 103 of 171 patients(60.2%) after NST. Initial tumor burden at diagnosis -tumor size, lymph node metastasis- was not correlated with CTC positivity. Overall, CTC count ((≥1 CTC, ≥2 CTCs, and ≥5 CTCs) was not correlated with response to therapy. Using RECIST criteria, 86.5% (179/204) were responders (complete, partial response, CR/PR) and 12.1% (25/204) were non-responders (stable, progressive disease, SD/PD). 14.5% (30/207) showed a pathologic complete response (pCR), yet no association was found between CTC count/changes and radiologic/pathologic response to therapy. Also, CTC count was not correlated with prognosis among the whole population. However, HR+ tumors, CTC detection before NST was significantly associated with treatment response by RECIST criteria (responder vs. non-responder) (p=0.003, p=0.017 and p=0.023, respectively).
Conclusions: Our findings support limited value of CTC count for locally advanced breast cancers undergoing neoadjuvant systemic therapy.
Citation Format: Gwark S-C, Kim J, Kim YH, Kim MS, Park JY, Lee SB, Sohn G, Chung IY, Ko BS, Kim HJ, Lee JW, Son BH, Ahn SH. Analysis of serial circulating tumor cell count during neoadjuvant systemic therapy in breast cancer patients [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P6-09-09.
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Gwark SC, Lee JW, Lee SB, Sohn G, Kim J, Chung IY, Ko BS, Kim HJ, Son BH, Ahn SH. Abstract P2-08-22: Clinical implication of HER2/neu status in hormone receptor positive pure mucinous breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-08-22] [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
Background: Mucinous carcinoma of the breast is a rare type of breast cancer with favorable outcome compared with other types of breast cancer. The current guideline does not recommend chemotherapy/anti-HER2 therapy for mucinous breast cancer with hormone receptor-positive subtype regardless of HER2/neu status. In this study, we evaluated the survival of pure mucinous breast cancer according to tumor stage and subtype.
Methods: Between 1989 and 2014, in Asan Medical Center, Korea, total 473 pure mucinous carcinomas (stage I-III) undergone curative surgery were reviewed retrospectively. 5yr disease-free and overall survival were analyzed according to size, lymph node metastasis, hormone receptor/HER2 status and given therapy.
Result: Total of 473 patients with pure mucinous breast cancer were analyzed and median follow-up duration was 78.00 months. 439 patients were hormone receptor-positive, 374 were node negative, 55 were HER2/neu positive. Among 374 patients with hormone receptor-positive and node-negative, tumor size was <1cm in 46 patients, 1-2.9cm in 259 patients, ≥3cm in 69 patients. In HR-positive/Node-positive BCs, 90.8%(59/65)were given chemotherapy and 35.3%(6/17) were also given trastuzumab. Sixteen patients given trastuzumab were only included in the analysis to assess the benefit of trastuzumab among HER2 positive BCs.
Overall, 5-year disease-free survival (DFS) rate was 94.1% and the 5-year overall survival (OS) rate was 95.9%. Using Cox regression analysis, lymph node metastasis was the only significant prognostic factor for both DFS (HR4.0, 95%CI:1.8-9.0, p=0.001) and OS (HR3.5, 95%CI:1.3-8.9, p=0.008). Among HR-positive/node-negative with tumor size ≥3cm, HER2/neu positivity was only significantly associated with 5yr-DFS (71.4% in HER2/neu+ vs. 96.4% in HER2/neu-, HR9.5, 95%CI:1.3-67.5, p=0.024). This observation was consistently combining both 'HR-positive/node-negative/>3cm' and 'HR-positive/node positive' BCs (N=127) that HER2 positive tumors showed worse survival (HR 3.7, 95%CI:1.2-10.8, p=0.015). Intriguingly, within this subgroup of HR-positive/node-negative/>3cm' and 'HR-positive/node positive' BCs, among HER2 positive tumors, while 5yr-DFS was 63.7% in patients who didn't receive trastuzumab, 100% were disease free in patients who were given trastuzumab.
Conclusions: Overall, nodal status was the most significant prognostic factor for pure mucinous breast cancer. In hormone receptor-positive, lymph node negative mucinous breast cancer with tumor of ≥3cm, HER2 positive BCs showed worse survival, suggesting a potential role of anti-HER2 strategy in this subgroup.
Citation Format: Gwark S-C, Lee JW, Lee SB, Sohn G, Kim J, Chung IY, Ko BS, Kim HJ, Son BH, Ahn SH. Clinical implication of HER2/neu status in hormone receptor positive pure mucinous breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-08-22.
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Kim J, Jo WK, Kim KY, Kim BJ, Lee SB, Lee HJ, Yu JH, Kim HJ, Chung IY, Ko BS, Kim SB, Jung KH, Ahn JH, Chang S, Lee JW, Son BH, Ahn SH. Abstract P4-01-11: Genomic alterations of cell-free DNA in early breast cancer patients with recurrence. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p4-01-11] [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
Cell-free DNA (cfDNA), as a non-invasive strategy, provides substantial benefit to overcome tumor heterogeneity. Surveillance of recurrence after standard treatment in early breast cancer (BC) using cfDNA, enables to detect minimal residual disease (MRD), also to identify genomic alterations driving recurrences. We aimed to assess the role of cfDNA in detecting MRD by investigating genomic alterations of 1)primary, recurred tumor and 2)cfDNA at time of recurrence using deep targeted sequencing. Fifty-four early BC patients were enrolled prospectively between 2014 and 2017 at time of recurrence. Median disease free interval was 28.5 months (rage 6.2-49.8). 62.7% (32/51) were hormone receptor (HR) positive (28 HRpos/HER2neg, 4 HRpos/HER2pos), 11.8% (6/51) were HRneg/HER2pos and 25.5% (13/51) were triple negative BCs. 59.3% (32/54) patients developed loco-regional recurrence (15 local recurrence only, 13 regional only, 4 with both) and distant metastasis was observed among 40.7% (22/54) patients. Cell-free DNA was extracted from 5cc blood at time of recurrence. Deep targeted sequencing was performed using customized NGS panel –encompassing 426 cancer-related target coding region, 242 fusion and amplification-related region- of cfDNA and FFPE(formalin fixed paraffin embedded) tumor samples archived from surgical resection or biopsy. Deep targeted sequencing data was successfully performed in 72.1% (31/43) plasma samples and sequencing yield was significantly lower when stored for more than 2yrs (46.2% vs 83.3%).
Mutations of cfDNA and tumor (primary, recurred) were analyzed. Mean sequencing depth of cfDNA and FFPE were x425.7 and x777.6 respectively. Median number of pathogenic mutations found in primary tumor, cfDNA and recurred tumor were 27(range 12-99), 25(range 8-85) and 9(range 0-23). Among mutations found in primary tumor, 27.4% were shared mutations (range 8.1%-72.7%) with recurred tumor and 26.1% were shared mutations (range 4.7%-69.2%) observed in cfDNA sample. Among mutations found in recurred tumor, 40.9% were observed in cfDNA (range 17.7-87.5%). In primary tumor, median number of mutations with allelic fraction (MAF)>10% were 12 (range 4-21) and at least one mutation was found in cfDNA at time of recurrence. Among mutations with MAF>10%, 59.4% and 69.1% were found in cfDNA and recurred tumor. Known oncogenic mutations of PIK3CA, TP53, GATA3, AKT1, ESR1, RELN, ERBB2, ERBB3, BRCA1 mutation were found. PIK3CA gene (p.H1047R) was found in two cases both in primary tumor and cfDNA at recurrence (MAF 11.4% vs 5.3% and 12.3% vs 15.4%) suggesting de novo driver mutation. One patient developed regional recurrence during adjuvant aromatase inhibitor with ESR1 V392I mutation in both cfDNA and recurred tumor (MAF 48.1 and 54.5%), while another patient's recurred tumor during aromatase inhibitor harbored ESR1 D538G mutation exclusively in recurred tumor with MAF <1%. Both patients had no ESR1 hotpot mutation in primary tumor.
Our data showed sequencing yield of 83.3% in plasma samples within 2yr. Pathogenic mutations in primary tumor, especially when MAF>10%, half of them was observed in cfDNA at time of recurrence. ESR1 mutation should be included in cfDNA surveillance for patients undergoing endocrine therapy even absent in primary tumor.
Citation Format: Kim J, Jo WK, Kim KY, Kim BJ, Lee SB, Lee HJ, Yu JH, Kim HJ, Chung IY, Ko BS, Kim S-B, Jung KH, Ahn JH, Chang S, Lee JW, Son BH, Ahn SH. Genomic alterations of cell-free DNA in early breast cancer patients with recurrence [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P4-01-11.
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Kim HJ, Noh WC, Nam SJ, Park BW, Lee ES, Im SA, Jung YS, Yoon JH, Kang SS, Park KH, Lee SJ, Jung J, Lee MH, Cho SH, Kim SY, Kim HA, Han SH, Han W, Hur MH, Ahn SH. Abstract P4-14-04: Time course changes in serum FSH, estradiol, and menstruation restoration in premenopausal patients with breast cancer taking adjuvant tamoxifen after completing chemotherapy: A report from the ASTRRA study. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p4-14-04] [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
BACKGROUND
Assessment of restoration of ovarian function after chemotherapy is critical with respect to the initiation of different types of endocrine treatment in young high risk breast cancer patients
METHODS
In total, 1289 women who remained premenopausal or resumed premenopausal status after chemotherapy were randomized to receive 5 years of tamoxifen or 5 years of tamoxifen plus 2 years of ovarian suppression. The patients who did not resume menstruation were followed up for 2 years with tamoxifen treatment after finishing chemotherapy. Prospectively collected consecutive post-chemotherapy hormone and menstruation data were available for 705 breast cancer patients who enrolled tamoxifen-only treatment group or did not resume menstruation during follow up. This analysis evaluated the proportion of patients with pre-menopausal FSH levels (<30 mIU/ml), E2 levels (340 pg/ml), and menstruation at any time point during treatment with tamoxifen.
RESULTS
During 5 years of tamoxifen treatment after chemotherapy for premenopausal breast cancer patients, 62% of patients resumed menstruation. Menstruation returned in 92% of patients under 35 years old but only in 31% of patients over 45 years old. Ovarian function, defined by serum FSH and E2 levels, resumed in 94% and 65% of patients, respectively, over 5 years. Most patients achieved ovarian function restoration during the first 2 years after chemotherapy, with 47.1% resuming menstruation and 86.2% and 50.3% achieving pre-menopausal FSH and E2 levels, respectively, in the first 2 years. Clinical factors related to menstruation restoration were younger age (HR = 6.38, 95% CI 1.33-3.47), 6 month hormone profile after chemotherapy (FSH<30: HR=1.67, 95% CI 1.28-2.17; E2 >40: HR=2.96, 95% CI 2.25-3.89), and anthracycline without taxane chemotherapy (HR=1.63, 95% CI 1.25-2.13).
CONCLUSIONS
During 5 years of tamoxifen treatment after chemotherapy, half of patients experienced menstruation restoration, including most very young patients under 35 years. The majority of patients experienced menstruation restoration in the first 2 years of tamoxifen treatment.
Citation Format: Kim HJ, Noh WC, Nam SJ, Park B-w, Lee ES, Im SA, Jung YS, Yoon JH, Kang SS, Park KH, Lee S-J, Jung J, Lee MH, Cho SH, Kim SY, Kim H-A, Han S-H, Han W, Hur MH, Ahn SH. Time course changes in serum FSH, estradiol, and menstruation restoration in premenopausal patients with breast cancer taking adjuvant tamoxifen after completing chemotherapy: A report from the ASTRRA study [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P4-14-04.
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Lee S, Ahn SH, Son BH, Lee JW, Chung IY, Ko BS, Kim HJ, Kim J, Shon G. Abstract P2-08-60: Withdrawn. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-08-60] [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
This abstract was withdrawn by the authors.
Citation Format: Lee S, Ahn SH, Son BH, Lee JW, Chung IY, Ko BS, Kim HJ, Kim J, Shon G. Withdrawn [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-08-60.
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Oh S, Jang JH, Kim HJ, Seo NS, Byun SH, Kim SW, Kim DS. Long-term Follow-up of Complicated Crown Fracture With Fragment Reattachment: Two Case Reports. Oper Dent 2019; 44:574-580. [PMID: 30702408 DOI: 10.2341/18-201-t] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Two cases of complicated crown fracture of the maxillary incisors were restored using the fragment reattachment technique. Root canal treatment was performed, and the fractured fragment was bonded to the tooth structure using a dentin adhesive system and a flowable composite resin, followed by the insertion of a fiber post using dual-cured resin cement. Reattached fragments have shown reliable prognosis without inflammatory signs around bonded junctions after long-term follow-up.
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