726
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Bai JZ, Ban Y, Bian JG, Chen AD, Chen HF, Chen HS, Chen JC, Chen XD, Chen YB, Cheng BS, Chi SP, Chu YP, Choi JB, Cui XZ, Dai YS, Dong LY, Du ZZ, Dunwoodie W, Fu HY, Fu LP, Gao CS, Gu SD, Guo YN, Guo ZJ, Han SW, Han Y, Harris FA, He J, He JT, He KL, He M, He X, Hong T, Heng YK, Hu GY, Hu HM, Hu QH, Hu T, Huang GS, Huang XP, Huang YZ, Izen JM, Ji XB, Jiang CH, Jin Y, Jones BD, Kang JS, Ke ZJ, Kim HJ, Kim SK, Kim TY, Kong D, Lai YF, Li D, Li HB, Li HH, Li J, Li JC, Li PQ, Li QJ, Li RY, Li W, Li WG, Li XN, Li XQ, Liu B, Liu F, Liu F, Liu HM, Liu J, Liu JP, Liu TR, Liu RG, Liu Y, Liu ZX, Lou XC, Lu GR, Lu F, Lu JG, Lu ZJ, Luo XL, Ma EC, Ma JM, Malchow R, Mao HS, Mao ZP, Meng XC, Mo XH, Nie J, Nie ZD, Olsen SL, Paluselli D, Park H, Qi ND, Qi XR, Qian CD, Qiu JF, Que YK, Rong G, Shao YY, Shen BW, Shen DL, Shen H, Shen XY, Sheng HY, Shi F, Shi HZ, Song XF, Suh JY, Sun HS, Sun LF, Sun YZ, Tang SQ, Toki W, Tong GL, Varner GS, Wang J, Wang JZ, Wang L, Wang LS, Wang P, Wang PL, Wang SM, Wang YY, Wang ZY, Wei CL, Wu N, Xi DM, Xia XM, Xie XX, Xu GF, Xu Y, Xue ST, Yan WB, Yan WG, Yang CM, Yang CY, Yang GA, Yang HX, Yang W, Yang XF, Ye MH, Ye SW, Ye YX, Yu CS, Yu CX, Yu GW, Yuan Y, Zhang BY, Zhang C, Zhang CC, Zhang DH, Zhang HL, Zhang HY, Zhang J, Zhang JW, Zhang L, Zhang LS, Zhang P, Zhang QJ, Zhang SQ, Zhang XY, Zhang YY, Zhang ZP, Zhao DX, Zhao HW, Zhao J, Zhao JW, Zhao M, Zhao PP, Zhao WR, Zhao YB, Zhao ZG, Zheng JP, Zheng LS, Zheng ZP, Zhou BQ, Zhou GM, Zhou L, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zou BS. Measurements of the cross section for e(+)e(-) --> hadrons at center-of-mass energies from 2 to 5 GeV. PHYSICAL REVIEW LETTERS 2002; 88:101802. [PMID: 11909342 DOI: 10.1103/physrevlett.88.101802] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2001] [Indexed: 05/23/2023]
Abstract
We report values of R = sigma(e(+)e(-)-->hadrons)/sigma(e(+)e(-)-->mu(+)mu(-)) for 85 center-of-mass energies between 2 and 5 GeV measured with the upgraded Beijing Spectrometer at the Beijing Electron-Positron Collider.
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727
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Kim HJ, Karpeh MS, Brennan MF. Standardization of the extent of lymphadenectomy for gastric cancer: impact on survival. Adv Surg 2002; 35:203-23. [PMID: 11579811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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728
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Kang SN, Kim SH, Chung SW, Lee MH, Kim HJ, Kim TS. Enhancement of 1 alpha,25-dihydroxyvitamin D(3)-induced differentiation of human leukaemia HL-60 cells into monocytes by parthenolide via inhibition of NF-kappa B activity. Br J Pharmacol 2002; 135:1235-44. [PMID: 11877332 PMCID: PMC1573237 DOI: 10.1038/sj.bjp.0704573] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
1. Transcription factors such as NF-kappa B provide powerful targets for drugs to use in the treatment of cancer. In this report parthenolide (PT), a sesquiterpene lactone of herbal remedies such as feverfew (Tanacetum parthenium) with NF-kappa B inhibitory activity, markedly increased the degree of human leukaemia HL-60 cell differentiation when simultaneously combined with 5 nM 1 alpha,25-dihydroxyvitamin D(3) (1,25-(OH)(2)D(3)). PT by itself did not induce HL-60 cell differentiation. 2. Cytofluorometric analysis indicated that PT stimulated 1,25-(OH)(2)D(3)-induced differentiation of HL-60 cells predominantly into monocytes. 3. Pretreatment of HL-60 cells with PT before the 1,25-(OH)(2)D(3) addition also potentiated the 1,25-(OH)(2)D(3)-induced HL-60 cell differentiation in both a dose- and a time-dependent manner, in which the enhanced levels of cell differentiation closely correlated with the inhibitory levels of NF-kappa B binding activity by PT. 4. In contrast, santonin, a sesquiterpene lactone without an inhibitory activity of NF-kappa B binding to the kappa B sites, did not enhance the 1,25-(OH)(2)D(3)-induced HL-60 cell differentiation. 5. In transfection experiments, PT enhanced 1,25-(OH)(2)D(3)-induced VDRE-dependent promoter activity. Furthermore, PT restored 1,25-(OH)(2)D(3)-induced VDRE-dependent promoter activity inhibited by TNF-alpha, an activator of NF-kappa B signalling pathway. 6. These results indicate that PT strongly potentiates the 1,25-(OH)(2)D(3)-induced HL-60 cell differentiation into monocytes via the inhibition of NF-kappa B activity and provide evidence that inhibition of NF-kappa B activation can be a pre-requisite to the efficient entry of promyelocytic leukaemia cells into a differentiation pathway.
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729
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Chung HY, Kim HJ, Kim JW, Yu BP. The inflammation hypothesis of aging: molecular modulation by calorie restriction. Ann N Y Acad Sci 2002. [PMID: 11795524 DOI: 10.1111/j.1749-6632.2001.tb05662.x] [Citation(s) in RCA: 218] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Current evidence strongly indicates that reactive oxygen species (ROS) and reactive nitrogen species (RNS) are widely implicated in the inflammatory process. However, mechanistic information is not readily available on the extent to which ROS/RNS contributes to the proinflammatory states of the aging process. The involvement of the underlying inflammation during the aging process and the molecular delineation of anti-inflammatory action of calorie restriction (CR) is described. Age-related upregulations of NF-kappaB, IL-beta, IL-6, TNFalpha, cyclooxygenase-2, and inducible NO synthase are all attenuated by CR. The suppression of the NF-kappaB activation was accomplished by blocking the dissociation of inhibitory IkappaBalpha and IkappaBbeta by CR. These findings provide underlying molecular insights into the anti-inflammatory action of CR in relation to the aging process. Based on these and other available data, it is suggested that the "Inflammation Hypothesis of Aging" supports the molecular basis of the inflammatory process as a plausible cause of the aging process.
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730
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Abe K, Abe K, Abe T, Adachi I, Ahn BS, Aihara H, Akatsu M, Asano Y, Aso T, Aushev T, Bakich AM, Ban Y, Banas E, Behari S, Behera PK, Bondar A, Bozek A, Browder TE, Casey BCK, Chang P, Chao Y, Cheon BG, Chistov R, Choi SK, Choi Y, Dong LY, Dragic J, Drutskoy A, Eidelman S, Enari Y, Fang F, Fujii H, Fukunaga C, Fukushima M, Gabyshev N, Garmash A, Gershon T, Gordon A, Guo R, Haba J, Hamasaki H, Handa F, Hara K, Hara T, Hayashii H, Hazumi M, Heenan EM, Higuchi I, Hokuue T, Hoshi Y, Hou SR, Hou WS, Huang HC, Igarashi Y, Iijima T, Ikeda H, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki H, Iwasaki Y, Jalocha P, Jang HK, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawamura N, Kawasaki T, Kichimi H, Kim DW, Kim H, Kim HJ, Kim HO, Kim H, Kim SK, Kim TH, Kinoshita K, Kobayashi S, Konishi H, Krokovny P, Kulasiri R, Kumar S, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee SH, Liventsev D, Lu RS, MacNaughton J, Marlow D, Matsubara T, Matsumoto S, Matsumoto T, Mikami Y, Miyabayashi K, Miyake H, Miyata H, Moloney GR, Mori S, Mori T, Nagamine T, Nagasaka Y, Nagashima Y, Nakano E, Nakao M, Nam JW, Natkaniec Z, Neichi K, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CS, Park CW, Park H, Park KS, Peters M, Piilonen LE, Root N, Rybicki K, Ryuko J, Sagawa H, Sakai Y, Sakamoto H, Satapathy M, Satpathy A, Schrenk S, Semenov S, Senyo K, Sevior ME, Shibuya H, Shwartz B, Stanic S, Sugi A, Sugiyama A, Sumisawa K, Sumiyoshi T, Suzuki JI, Suzuki K, Suzuki S, Swain SK, Takahashi T, Takasaki F, Takita M, Tamai K, Tamura N, Tanaka J, Tanaka M, Tanaka Y, Taylor GN, Teramoto Y, Tomoto M, Tomura T, Tovey SN, Trabelsi K, Trischuk W, Tsuboyama T, Tsukamoto T, Uehara S, Ueno K, Unno Y, Uno S, Ushiroda Y, Vahsen SE, Varvell KE, Wang CC, Wang CH, Wang JG, Wang MZ, Watanabe Y, Won E, Yabsley BD, Yamada Y, Yamaga M, Yamaguchi A, Yamashita Y, Yamauchi M, Yoshida K, Yuan Y, Yusa Y, Zhang CC, Zhang J, Zhao HW, Zheng Y, Zhilich V, Zontar D. Production of prompt charmonia in e(+)e(-) annihilation at square root of s approximately equals 0.6 GeV. PHYSICAL REVIEW LETTERS 2002; 88:052001. [PMID: 11863715 DOI: 10.1103/physrevlett.88.052001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2001] [Indexed: 05/23/2023]
Abstract
The production of prompt J/psi, psi(2S), chi(c1), and chi(c2) is studied using a 32.4 fb(-1) data sample collected with the Belle detector at Upsilon(4S) and at 60 MeV below the resonance. The yield of prompt J/psi mesons in the Upsilon(4S) sample is compatible with that of continuum production; we set an upper limit B(Upsilon(4S)-->J/psiX) < 1.9 x 10(-4) at the 95% confidence level, and find sigma(e(+)e(-)-->J/psiX) = 1.47 plus/minus 0.10 plus/minus 0.13 pb. The cross sections for prompt psi(2S) and direct J/psi are measured. The J/psi momentum spectrum, production angle distribution, and polarization are studied.
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731
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Abe K, Abe K, Abe R, Adachi I, Ahn BS, Aihara H, Akatsu M, Asano Y, Aso T, Aulchenko V, Aushev T, Bakich AM, Banas E, Behari S, Behera PK, Bondar A, Bozek A, Browder TE, Casey BCK, Chang P, Chao Y, Chen KF, Cheon BG, Chistov R, Choi SK, Choi Y, Dong LY, Dragic J, Drutskoy A, Eidelman S, Enari Y, Fang F, Fujii H, Fukushima M, Gabyshev N, Garmash A, Gershon T, Gordon A, Gotow K, Guo R, Haba J, Hamasaki H, Handa F, Hara K, Hara T, Hastings NC, Hayashii H, Hazumi M, Heenan EM, Higuchi I, Higuchi T, Hirano H, Hojo T, Hokuue T, Hoshina K, Hou SR, Hou WS, Hsu SC, Huang HC, Igarashi Y, Iijima T, Ikeda H, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki H, Iwasaki Y, Jackson DJ, Jang HK, Kakuno H, Kaneko J, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawai H, Kawamura N, Kawasaki T, Kichimi H, Kim DW, Kim H, Kim HJ, Kim HO, Kim H, Kim SK, Kim TH, Kinoshita K, Kobayashi S, Konishi H, Krokovny P, Kulasiri R, Kumar S, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Liventsev D, Lu RS, Matsubara T, Matsumoto S, Matsumoto T, Mikami Y, Miyabayashi K, Miyake H, Miyata H, Moloney GR, Moorhead GF, Mori S, Mori T, Murakami A, Nagamine T, Nagasaka Y, Nagashima Y, Nakadaira T, Nakano E, Nakao M, Nam JW, Natkaniec Z, Neichi K, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CS, Park CW, Park H, Park KS, Peak LS, Peters M, Piilonen LE, Rodriguez JL, Root N, Rozanska M, Rybicki K, Ryuko J, Sagawa H, Sakai Y, Sakamoto H, Satapathy M, Satpathy A, Schrenk S, Semenov S, Senyo K, Sevior ME, Shibuya H, Shwartz B, Sidorov A, Stanic S, Sugi A, Sugiyama A, Sumisawa K, Sumiyoshi T, Suzuki K, Suzuki S, Suzuki SY, Swain SK, Takahashi T, Takasaki F, Takita M, Tamai K, Tamura N, Tanaka J, Tanaka M, Tanaka Y, Taylor GN, Teramoto Y, Tomoto M, Tomura T, Tovey SN, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Ueno K, Unno Y, Uno S, Ushiroda Y, Varvell KE, Wang CC, Wang CH, Wang JG, Wang MZ, Watanabe Y, Won E, Yabsley BD, Yamada Y, Yamaga M, Yamaguchi A, Yamamoto H, Yamashita Y, Yamauchi M, Yanaka S, Yashima J, Yokoyama M, Yoshida K, Yuan Y, Yusa Y, Zhang CC, Zhang J, Zheng Y, Zhilich V, Zontar D. Observation of the color-suppressed decay B( 0)-->D(0)pi(0). PHYSICAL REVIEW LETTERS 2002; 88:052002. [PMID: 11863716 DOI: 10.1103/physrevlett.88.052002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2001] [Indexed: 05/23/2023]
Abstract
We report the first observation of color-suppressed B( 0)-->D(0)pi(0), D(*0)pi(0), D0eta, and D0omega decays, and evidence for B( 0)-->D(*0)eta and D(*0)omega. The branching fractions are B(B( 0)-->D0pi(0)) = (3.1 +/- 0.4 +/- 0.5)x10(-4), B(B( 0) -->D(*0)pi(0)) = (2.7(+0.8+0.5)(-0.7-0.6))x10(-4), B(B( 0) --> D0eta) = (1.4(+0.5)(-0.4) +/- 0.3)x10(-4), B(B( 0) --> D0omega) = (1.8 +/- 0.5(+0.4)(-0.3))x10(-4), and we set 90% confidence level upper limits of B(B( 0) --> D(*0)eta)<4.6 x 10(-4) and B(B( 0)-->D(*0)omega)<7.9 x 10(-4). The analysis is based on a data sample of 21.3 fb(-1) collected at the Upsilon(4S) resonance by the Belle detector at the KEKB e(+)e(-) collider.
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732
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Kim HJ, Koh KS, Oh CS, Hu KS, Kang JW, Chung IH. Emerging patterns of the cervical cutaneous nerves in Asians. Int J Oral Maxillofac Surg 2002; 31:53-6. [PMID: 11936400 DOI: 10.1054/ijom.2001.0165] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Numerous reports exist upon clinical viewpoints of the four cervical cutaneous nerves. Unfortunately, a detailed description of the cervical cutaneous nerves has not yet been published. For this reason, administering effective anaesthesia to a particular nerve branch is difficult. The aim of this study was to clarify the anatomical knowledge about the emerging patterns of the cervical cutaneous nerves in the superficial neck using 35 Korean cadavers (22 male, 13 female). Four cervical cutaneous nerve branches penetrating the fascia of the posterior border of the sternocleidomastoid muscle (SCM) were classified into seven types based on the locations of their nerve emergence. Among these, the separated type (L-G-T-S) was the most frequent (50%). followed by the L-G x T-S type (20.3%), in which the great auricular nerve (G) and the transverse cervical nerve (T) emerged at the same level on the posterior SCM border.
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733
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Abe K, Abe K, Abe R, Adachi I, Ahn BS, Aihara H, Akatsu M, Asano Y, Aso T, Aulchenko V, Aushev T, Bakich AM, Banas E, Behari S, Behera PK, Bondar A, Bozek A, Browder TE, Casey BCK, Chang P, Chao Y, Cheon BG, Chistov R, Choi Y, Dong LY, Dragic J, Drutskoy A, Eidelman S, Enari Y, Fujii H, Fukunaga C, Fukushima M, Gabyshev N, Garmash A, Gordon A, Gotow K, Guo R, Haba J, Hamasaki H, Handa F, Hara K, Hara T, Hastings NC, Hayashii H, Hazumi M, Heenan EM, Higuchi I, Hirano H, Hojo T, Hokuue T, Hoshi Y, Hoshina K, Hou SR, Hou WS, Hsu SC, Huang HC, Igarashi Y, Iijima T, Ikeda H, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki H, Iwasaki Y, Jackson DJ, Jang HK, Kagan R, Kaneko J, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawai H, Kawamura N, Kawasaki T, Kichimi H, Kim DW, Kim H, Kim HJ, Kim HO, Kim H, Kim SK, Kinoshita K, Kobayashi S, Konishi H, Krokovny P, Kulasiri R, Kumar S, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee SH, Liventsev D, Lu RS, Marlow D, Matsubara T, Matsumoto S, Matsumoto T, Mikami Y, Miyabayashi K, Miyake H, Miyata H, Moloney GR, Moorhead GF, Mori S, Mori T, Nagamine T, Nagasaka Y, Nagashima Y, Nakadaira T, Nakano E, Nakao M, Nam JW, Natkaniec Z, Neichi K, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CS, Park CW, Park H, Park KS, Peak LS, Peters M, Piilonen LE, Rodriguez JL, Root N, Rozanska M, Rybicki K, Ryuko J, Sagawa H, Sakai Y, Sakamoto H, Satapathy M, Satpathy A, Schrenk S, Semenov S, Senyo K, Sevior ME, Shibuya H, Shwartz B, Stanic S, Sugi A, Sugiyama A, Sumisawa K, Sumiyoshi T, Suzuki K, Suzuki S, Suzuki SY, Swain SK, Takahashi T, Takasaki F, Takita M, Tamai K, Tamura N, Tanaka J, Tanaka M, Tanaka Y, Taylor GN, Teramoto Y, Tomoto M, Tomura T, Tovey SN, Tsuboyama T, Tsukamoto T, Uehara S, Ueno K, Unno Y, Uno S, Ushiroda Y, Vahsen SE, Varvell KE, Wang CC, Wang CH, Wang JG, Wang MZ, Watanabe Y, Won E, Yabsley BD, Yamada Y, Yamaga M, Yamaguchi A, Yamamoto H, Yamashita Y, Yamauchi M, Yanaka S, Yashima J, Yokoyama M, Yoshida K, Yuan Y, Yusa Y, Zhang CC, Zhang J, Zhao HW, Zheng Y, Zhilich V, Zontar D. Observation of B+ --> chi(c0)K+. PHYSICAL REVIEW LETTERS 2002; 88:031802. [PMID: 11801054 DOI: 10.1103/physrevlett.88.031802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2001] [Indexed: 05/23/2023]
Abstract
Using a sample of 31.3x10(6) BB pairs collected with the Belle detector at the Upsilon(4S) resonance, we make the first observation of the charged B meson decay to chi(c0) and a charged kaon. The measured branching fraction is B(B+-->chi(c0)K+) = (6.0(+2.1)(-1.8)+/-1.1)x10(-4), where the first error is statistical, and the second is systematic.
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734
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Abe K, Abe K, Abe R, Adachi I, Ahn BS, Aihara H, Akatsu M, Asano Y, Aso T, Aulchenko V, Aushev T, Bakich AM, Banas E, Behari S, Behera PK, Bondar A, Bozek A, Browder TE, Casey BCK, Chang P, Chao Y, Cheon BG, Chistov R, Choi SK, Choi Y, Dong LY, Drutskoy A, Eidelman S, Enari Y, Fang F, Fujii H, Fukunaga C, Fukushima M, Gabyshev N, Garmash A, Gershon T, Gordon A, Gotow K, Guo R, Haba J, Hamasaki H, Hanagaki K, Handa F, Hara K, Hara T, Hastings NC, Hayashii H, Hazumi M, Heenan EM, Higuchi I, Higuchi T, Hirano H, Hojo T, Hokuue T, Hoshi Y, Hoshina K, Hou SR, Hou WS, Hsu SC, Huang HC, Igarashi Y, Iijima T, Ikeda H, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki H, Iwasaki Y, Jackson DJ, Jang HK, Kakuno H, Kaneko J, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawai H, Kawamura N, Kawasaki T, Kichimi H, Kim DW, Kim H, Kim HJ, Kim HO, Kim H, Kim SK, Kinoshita K, Kobayashi S, Konishi H, Krokovny P, Kulasiri R, Kumar S, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee SH, Liventsev D, Lu RS, MacNaughton J, Matsubara T, Matsumoto S, Matsumoto T, Mikami Y, Miyabayashi K, Miyake H, Miyata H, Moloney GR, Moorhead GF, Mori S, Mori T, Murakami A, Nagamine T, Nagasaka Y, Nagashima Y, Nakadaira T, Nakano E, Nakao M, Nam JW, Natkaniec Z, Neichi K, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CS, Park CW, Park H, Park KS, Peak LS, Peters M, Piilonen LE, Rodriguez JL, Root N, Rozanska M, Rybicki K, Ryuko J, Sagawa H, Sakai Y, Sakamoto H, Satpathy A, Schrenk S, Semenov S, Senyo K, Sevior ME, Shibuya H, Schwartz B, Stanic S, Sugi A, Sugiyama A, Sumisawa K, Sumiyoshi T, Suzuki K, Suzuki S, Suzuki SY, Swain SK, Tajima H, Takahashi T, Takasaki F, Takita M, Tamai K, Tamura N, Tanaka J, Tanaka M, Tanaka Y, Taylor GN, Teramoto Y, Tomoto M, Tomura T, Tovey SN, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Ueno K, Unno Y, Uno S, Ushiroda Y, Varvell KE, Wang CC, Wang CH, Wang JG, Wang MZ, Watanabe Y, Won E, Yabsley BD, Yamada Y, Yamaga M, Yamaguchi A, Yamamoto H, Yamashita Y, Yamauchi M, Yashima J, Yokoyama M, Yoshida K, Yusa Y, Yuta H, Zhang CC, Zhang J, Zhao HW, Zheng Y, Zhilich V, Zontar D. Observation of the decay B --> Kl+l-. PHYSICAL REVIEW LETTERS 2002; 88:021801. [PMID: 11801003 DOI: 10.1103/physrevlett.88.021801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2001] [Revised: 10/19/2001] [Indexed: 05/23/2023]
Abstract
We report a search for the flavor-changing neutral current decay B-->K(*)l+l- using a 29.1 fb(-1) data sample accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB e+e- storage ring. We observe the decay process B-->Kl+l-(l = e, mu), for the first time, with a branching fraction of B(B-->Kl+l-) = (0.75(+0.25)(-0.21)+/-0.09)x10(-6).
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735
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Adcox K, Adler SS, Ajitanand NN, Akiba Y, Alexander J, Aphecetche L, Arai Y, Aronson SH, Averbeck R, Awes TC, Barish KN, Barnes PD, Barrette J, Bassalleck B, Bathe S, Baublis V, Bazilevsky A, Belikov S, Bellaiche FG, Belyaev ST, Bennett MJ, Berdnikov Y, Botelho S, Brooks ML, Brown DS, Bruner N, Bucher D, Buesching H, Bumazhnov V, Bunce G, Burward-Hoy J, Butsyk S, Carey TA, Chand P, Chang J, Chang WC, Chavez LL, Chernichenko S, Chi CY, Chiba J, Chiu M, Choudhury RK, Christ T, Chujo T, Chung MS, Chung P, Cianciolo V, Cole BA, D'Enterria DG, David G, Delagrange H, Denisov A, Deshpande A, Desmond EJ, Dietzsch O, Dinesh BV, Drees A, Durum A, Dutta D, Ebisu K, Efremenko YV, El Chenawi K, En'yo H, Esumi S, Ewell L, Ferdousi T, Fields DE, Fokin SL, Fraenkel Z, Franz A, Frawley AD, Fung SY, Garpman S, Ghosh TK, Glenn A, Godoi AL, Goto Y, Greene SV, Grosse Perdekamp M, Gupta SK, Guryn W, Gustafsson HA, Haggerty JS, Hamagaki H, Hansen AG, Hara H, Hartouni EP, Hayano R, Hayashi N, He X, Hemmick TK, Heuser JM, Hibino M, Hill JC, Ho DS, Homma K, Hong B, Hoover A, Ichihara T, Imai K, Ippolitov MS, Ishihara M, Jacak BV, Jang WY, Jia J, Johnson BM, Johnson SC, Joo KS, Kametani S, Kang JH, Kann M, Kapoor SS, Kelly S, Khachaturov B, Khanzadeev A, Kikuchi J, Kim DJ, Kim HJ, Kim SY, Kim YG, Kinnison WW, Kistenev E, Kiyomichi A, Klein-Boesing C, Klinksiek S, Kochenda L, Kochetkov V, Koehler D, Kohama T, Kotchetkov D, Kozlov A, Kroon PJ, Kurita K, Kweon MJ, Kwon Y, Kyle GS, Lacey R, Lajoie JG, Lauret J, Lebedev A, Lee DM, Leitch MJ, Li XH, Li Z, Lim DJ, Liu MX, Liu X, Liu Z, Maguire CF, Mahon J, Makdisi YI, Manko VI, Mao Y, Mark SK, Markacs S, Martinez G, Marx MD, Masaike A, Matathias F, Matsumoto T, McGaughey PL, Melnikov E, Merschmeyer M, Messer F, Messer M, Miake Y, Miller TE, Milov A, Mioduszewski S, Mischke RE, Mishra GC, Mitchell JT, Mohanty AK, Morrison DP, Moss JM, Mühlbacher F, Muniruzzaman M, Murata J, Nagamiya S, Nagasaka Y, Nagle JL, Nakada Y, Nandi BK, Newby J, Nikkinen L, Nilsson P, Nishimura S, Nyanin AS, Nystrand J, O'Brien E, Ogilvie CA, Ohnishi H, Ojha ID, Ono M, Onuchin V, Oskarsson A, Osterman L, Otterlund I, Oyama K, Paffrath L, Palounek APT, Pantuev VS, Papavassiliou V, Pate SF, Peitzmann T, Petridis AN, Pinkenburg C, Pisani RP, Pitukhin P, Plasil F, Pollack M, Pope K, Purschke ML, Ravinovich I, Read KF, Reygers K, Riabov V, Riabov Y, Rosati M, Rose AA, Ryu SS, Saito N, Sakaguchi A, Sakaguchi T, Sako H, Sakuma T, Samsonov V, Sangster TC, Santo R, Sato HD, Sato S, Sawada S, Schlei BR, Schutz Y, Semenov V, Seto R, Shea TK, Shein I, Shibata TA, Shigaki K, Shiina T, Shin YH, Sibiriak IG, Silvermyr D, Sim KS, Simon-Gillo J, Singh CP, Singh V, Sivertz M, Soldatov A, Soltz RA, Sorensen S, Stankus PW, Starinsky N, Steinberg P, Stenlund E, Ster A, Stoll SP, Sugioka M, Sugitate T, Sullivan JP, Sumi Y, Sun Z, Suzuki M, Takagui EM, Taketani A, Tamai M, Tanaka KH, Tanaka Y, Taniguchi E, Tannenbaum MJ, Thomas J, Thomas JH, Thomas TL, Tian W, Tojo J, Torii H, Towell RS, Tserruya I, Tsuruoka H, Tsvetkov AA, Tuli SK, Tydesjö H, Tyurin N, Ushiroda T, van Hecke HW, Velissaris C, Velkovska J, Velkovsky M, Vinogradov AA, Volkov MA, Vorobyov A, Vznuzdaev E, Wang H, Watanabe Y, White SN, Witzig C, Wohn FK, Woody CL, Xie W, Yagi K, Yokkaichi S, Young GR, Yushmanov IE, Zajc WA, Zhang Z, Zhou S. Suppression of hadrons with large transverse momentum in central Au+Au collisions at root square[s(NN)] = 130 GeV. PHYSICAL REVIEW LETTERS 2002; 88:022301. [PMID: 11801005 DOI: 10.1103/physrevlett.88.022301] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2001] [Indexed: 05/23/2023]
Abstract
Transverse momentum spectra for charged hadrons and for neutral pions in the range 1 GeV/c<p(T)<5 GeV/c have been measured by the PHENIX experiment at RHIC in Au+Au collisions at root square[s(NN)] = 130 GeV. At high p(T) the spectra from peripheral nuclear collisions are consistent with scaling the spectra from p+p collisions by the average number of binary nucleon-nucleon collisions. The spectra from central collisions are significantly suppressed when compared to the binary-scaled p+p expectation, and also when compared to similarly binary-scaled peripheral collisions, indicating a novel nuclear-medium effect in central nuclear collisions at RHIC energies.
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736
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Ahn YC, Park K, Kim DY, Kim KM, Kim J, Shim YM, Lee KS, Han J, Kim HJ, Kwon J, Lim DH, Noh YJ, Lee JE, Huh SJ. Preoperative concurrent chemoradiotherapy for stage IIIA non-small cell lung cancer. Acta Oncol 2002; 40:588-92. [PMID: 11669330 DOI: 10.1080/028418601750444123] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Thirty-one patients with stage IIIA non-small cell lung cancer (NSCLC) were treated with preoperative concurrent chemoradiotherapy (CCRT) followed by surgery. The treatment protocol could not be completed in eight patients. The acute hematologic toxicities of grade III or IV occurred in 48.4%, (15/31) after the first chemotherapy cycle, and in 39.1% (9/23) after the second cycle. The most common non-hematologic toxicity was radiation esophagitis. Surgery was attempted in 23 patients and successful in 22 patients (resection rate = 71.0%. Pathologic complete response and down-staging were achieved in 13.6% (3/22) and 68.2% (15/22). The median survival period, 2-year overall survival, local control and disease-free survival rates of all 31 patients and of 22 patients who underwent surgery were 19 months, 37.2%, 49.1%, 35.5%, and 19 months, 43.2%, 51.8%, 25.6%, respectively. On the basis of our observations, preoperative CCRT followed by surgery for stage IIIA NSCLC has resulted in outcomes comparable with those in previous reports.
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737
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Kohyama T, Liu X, Wen FQ, Kim HJ, Takizawa H, Rennard SI. Potentiation of human lung fibroblast chemotaxis by the thromboxane A(2) analog U-46619. THE JOURNAL OF LABORATORY AND CLINICAL MEDICINE 2002; 139:43-9. [PMID: 11873244 DOI: 10.1067/mlc.2002.120540] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Fibroblast production of extracellular matrix is crucial not only for normal tissue development and maintenance of tissue structure but also for the repair and remodeling processes after injury. Thromboxane A(2) (TXA(2)) is a potent mediator in inflammatory processes. The aim of this study was to investigate the effect of TXA(2) on chemotaxis of human fetal lung (HFL-1) fibroblasts induced by human plasma fibronectin or platelet-derived growth factor BB (PDGF-BB). By using the blindwell chamber technique, the TXA(2) agonist U-46619 alone had no chemotactic activity. However, U-46619 (200 nmol/L) stimulated HFL-1 fibroblast chemotaxis to human plasma fibronectin (20 microg/mL; 161.8% +/- 13.4%; P <.005) and to PDGF-BB (10 ng/mL; 188.5% +/- 7.0%; P <.005). Checkerboard analysis of human plasma fibronectin-directed migration confirmed that the TXA(2) agonist increased both chemotaxis and chemokinesis. The stimulatory effect of the TXA(2) agonist was concentration dependent and increased with time. Another agent known for stimulating the protein kinase C pathway, phorbol 12-myristate 13-acetate (10(-8) mol/L), had a similar effect, stimulating chemotaxis to fibronectin (146.2% +/- 8.6%). The stimulatory effect of the TXA(2) agonist on HFL-1 fibroblast chemotaxis was inhibited by the synthetic thromboxane receptor antagonist SQ29,548 (10(-5) mol/L) and the protein kinase C inhibitor calphostin (10(-7) mol/L). In summary, TXA(2) appears to stimulate fibroblast chemotaxis to fibronectin and PDGF, perhaps by modulating the rate of fibroblast migration. Such an effect may contribute to regulation of wound healing and the development of fibrotic disorders.
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738
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Tu JJ, Carr GL, Perebeinos V, Homes CC, Strongin M, Allen PB, Kang WN, Choi EM, Kim HJ, Lee SI. Optical properties of c-axis oriented superconducting MgB2 films. PHYSICAL REVIEW LETTERS 2001; 87:277001. [PMID: 11800908 DOI: 10.1103/physrevlett.87.277001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2001] [Indexed: 05/23/2023]
Abstract
Temperature dependent optical conductivities and dc resistivity of c-axis oriented superconducting (T(c) = 39.6 K) MgB2 films (approximately 450 nm) have been measured. The normal state ab-plane optical conductivities can be described by the Drude model with a temperature independent Drude plasma frequency of omega(p,D) = 13 600+/-100 cm(-1) or 1.68+/-0.01 eV. The normal state resistivity is fitted by the Bloch-Grüneisen formula with an electron-phonon coupling constant lambda(tr) = 0.13+/-0.02. The optical conductivity spectra below T(c) of these films suggest that MgB2 is a multigap superconductor.
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739
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Min BH, Kim HJ, Lim H, Park CS, Park SR. Effects of ageing and arthritic disease on nitric oxide production by human articular chondrocytes. Exp Mol Med 2001; 33:299-302. [PMID: 11795495 DOI: 10.1038/emm.2001.48] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Nitric oxide (NO) has been considered as an important mediator in inflammatory phases and in loss of cartilage. In inflammatory arthritis, NO levels are correlated with disease activity and articular cartilage is able to produce large amounts of NO with the appropriate inducing factor such as cytokines. The old animals are shown to have a greater sensitivity to NO than young animals. This study evaluated the basal production of NO in normal and OA-affected chondroyctes from young and old patients and compared the levels of NO formation in response to IL-1beta. The results showed that the basal levels were 7-fold higher in old chondrocytes than those of young cells. However, the IL-1beta induced NO production was seen to decrease with age. Aminoguianidine (AG), a competitive inhibitor of iNOS, inhibited NO formation completely in both chondrocytes from young and old individuals. However, at the same concentration of AG it caused partial inhibition of NO and iNOS formation in chondrocytes from OA-affected individuals. In addition, although the IL-1beta induced NO production was much lesser than that of young chondrocytes, the inhibition of collagen production by IL-1beta was prominent in old chondrocytes and OA-affected chondrocytes. These results suggest that age-related differences in the regulation of NO production and collagen production, which may affect the ageing cells and osteoarthritic changes in some way.
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740
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Choi S, Kim HJ, Ko YS, Jeong SW, Kim YI, Simonds WF, Oh JW, Nah SY. G alpha(q/11) coupled to mammalian phospholipase C beta 3-like enzyme mediates the ginsenoside effect on Ca(2+)-activated Cl(-) current in the Xenopus oocyte. J Biol Chem 2001; 276:48797-802. [PMID: 11673455 DOI: 10.1074/jbc.m104346200] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Recently we demonstrated that ginsenosides, the active ingredients of Panax ginseng, enhanced Ca(2+)-activated Cl(-) current in the Xenopus oocyte through a signal transduction mechanism involving the activation of pertussis toxin-insensitive G protein and phospholipase C (PLC). However, it has not yet been determined precisely which G protein subunit(s) and which PLC isoform(s) participate in the ginsenoside signaling. To provide answers to these questions, we investigated the changes in ginsenoside effect on the Cl(-) current after intraoocyte injections of the cRNAs coding various G protein subunits, a regulator of G protein signaling (RGS2), and G beta gamma-binding proteins. In addition, we examined which of mammalian PLC beta 1-3 antibodies injected into the oocyte inhibited the action of ginsenosides on the Cl(-) current. Injection of G alpha(q) or G alpha(11) cRNA increased the basal Cl(-) current recorded 48 h after, and it further prevented ginsenosides from enhancing the Cl(-) current, whereas G alpha(i2) and G alpha(oA) cRNA injection had no significant effect. The changes following G alpha(q) cRNA injection were prevented when G beta(1)gamma(2) and G alpha(q) subunits were co-expressed by simultaneous injection of the cRNAs coding these subunits. Injection of cRNA coding G alpha(q)Q209L, a constitutively active mutant that does not bind to G beta gamma, produced effects similar to those of G alpha(q) cRNA injection. The effects of G alpha(q)Q209L cRNA injection, however, were not prevented by co-injection of G beta(1)gamma(2) cRNA. Injection of the cRNA coding RGS2, which interacts most selectively with G alpha(q/11) among various identified RGS isoforms and stimulates the hydrolysis of GTP to GDP in active GTP-bound G alpha subunit, resulted in a severe attenuation of ginsenoside effect on the Cl(-) current. Finally, antibodies against PLC beta 3, but not -beta 1 and -beta 2, markedly attenuated the ginsenoside effect examined at 3-h postinjection. These results suggest that G alpha(q/11) coupled to mammalian PLC beta 3-like enzyme mediates ginsenoside effect on Ca(2+)-activated Cl(-) current in the Xenopus oocyte.
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741
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Jeong D, Kim TS, Lee JW, Kim KT, Kim HJ, Kim IH, Kim IY. Blocking of acidosis-mediated apoptosis by a reduction of lactate dehydrogenase activity through antisense mRNA expression. Biochem Biophys Res Commun 2001; 289:1141-9. [PMID: 11741311 DOI: 10.1006/bbrc.2001.6091] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Lactic acid produced from the cells is a potential cause of extra- and intracellular acidification. Due to scarce technical tools, lactic acid that leads to acidification could not be reduced and direct evidence of the relationship between metabolic lactate and apoptosis has not yet been elucidated. In this study, we designed a cellular pH regulation system in CHO cells by a reduction of lactate dehydrogenase (LDH) activity through LDH antisense mRNA expression. This inhibited lactate production and, therefore, acidification of the cytosol. Under HCO3(-)-buffered growth conditions, both the parent CHO cells and the engineered CHO cells maintained their extracellular pH and intracellular pH fairly well. However, upon acidification of the cytosol, only the parent CHO cells underwent apoptosis under HCO3(-)-free conditions. In fact, we observed a number of apoptosis-related events only in control cells, including mitochondrial dysfunction, cytochrome c release, and an increase in caspase-3 enzymatic activity.
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742
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Kim HJ, Lee JK, Kim JB, Park ES, Park SJ, Yoo DY, Yoon DY. Substituent effects on microstructure and polymerization of polyalkylsilsesquioxanes. J Am Chem Soc 2001; 123:12121-2. [PMID: 11724635 DOI: 10.1021/ja0168099] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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743
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Kim HJ, Triplett BA. Cotton fiber growth in planta and in vitro. Models for plant cell elongation and cell wall biogenesis. PLANT PHYSIOLOGY 2001; 127:1361-1366. [PMID: 11743074 DOI: 10.1104/pp.127.4.1361] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
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744
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Um JY, Kim HJ, Choi TJ, Jin CS, Park ST, Lee KC, Rhee HS, Lee KM, Lee YM, Kim HM, An NH, Kim JJ. Polymorphism of the angiotensin-converting enzyme gene in patients with cerebral infarction in Koreans. J Mol Neurosci 2001; 17:279-83. [PMID: 11859923 DOI: 10.1385/jmn:17:3:279] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The relationship between cerebrovascular disease and an insertion/deletion (I/D) polymorphism in the angiotensin-converting enzyme (ACE) gene is still being debated. The frequency of the DD genotype of the ACE gene was significantly higher in subjects with than those without cerebral infarction in Japan. The aim of the present study was to assess the relationship between ACE gene polymorphism and the development of cerebral infarction in a population from Korea. We examined its possible role as a risk factor in patients with cerebral infarction. The association between ACE gene polymorphism and cerebral infarction was examined in 106 patients with cerebral infarction and 498 controls without cerebral infarction. Frequencies of the genotypes and alleles of the ACE gene were investigated. The ACE genotype was analyzed by the polymerase chain reaction (PCR). The frequency of D allele was 37.7% in patients and 39.1% in controls (chi2 = 0.128, p = 0.720). The frequencies of the genotypes of the ACE gene were II: 39.6%, ID: 45.3%, and DD: 15.1% in patients, and II: 37.1%, ID: 47.6%, and DD: 15.3% in controls (chi2 = 0.127, p = 0.721). There was no significant difference in the frequency of the DD genotype of the ACE gene, and we did not find any association between ACE polymorphism and cerebral infarction. These results indicate that ACE polymorphism is not a risk factor for the development of cerebral infarction in a Korean population.
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745
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Choi BH, Suh CH, Par JH, Yoo JH, Kim HJ. An effective technique for open reduction of mandibular angle fractures using new reduction forceps: technical innovations. Int J Oral Maxillofac Surg 2001; 30:555-7. [PMID: 11829240 DOI: 10.1054/ijom.2001.0158] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We demonstrate a new technique that is useful for precompressing and holding mandibular angle fractures by means of new reduction forceps. The forceps were designed for application in the mandibular angle area via a transoral approach.
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746
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Lee JJ, Chung IJ, Park MR, Ryang DW, Park CS, Kim HJ. Increased angiogenesis and Fas-ligand expression are independent processes in acute myeloid leukemia. Leuk Res 2001; 25:1067-73. [PMID: 11684278 DOI: 10.1016/s0145-2126(01)00082-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
We evaluated the clinical significance of tumor angiogenesis and Fas-ligand (FasL) expression using parameters including the microvessel count (MVC), vascular endothelial growth factor (VEGF) level, and FasL expression in patients with acute myeloid leukemia (AML). Paraffin-embedded bone marrow (BM) sections from 43 AML patients at diagnosis, 20 patients after subsequent induction therapy, and 18 controls with non-invasive lymphoma were stained immunohistochemically for von Willebrand factor (vWF) and FasL. VEGF in BM mononuclear cells from 32 AML patients at diagnosis and 10 controls, including bone marrow transplantation donors, was assayed by an ELISA method. We found that the mean MVC, VEGF level, and FasL expression in AML patients at diagnosis were significantly higher than those of controls, with a significant correlation between the MVC and VEGF levels (r=0.43). However, there were no correlations between FasL expression and MVC or VEGF level. The mean MVC and FasL expression after induction therapy were lower than those evaluated at diagnosis, but were higher than those of controls. There was a correlation between the MVC and percentage of BM blasts (r=0.479), but no correlation between the MVC, VEGF level, or FasL expression and other hematologic or clinical variables. Our findings provide evidence of increased angiogenesis and tumor immune escape in AML, and both angiogenesis and tumor immune escape are independent processes in AML.
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747
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Han S, Ahn SH, Park K, Bae BN, Kim KH, Kim HJ, Kim YD, Kim HY. P16INK4a protein expression is associated with poor survival of the breast cancer patients after CMF chemotherapy. Breast Cancer Res Treat 2001; 70:205-12. [PMID: 11804184 DOI: 10.1023/a:1013047413895] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Immunohistochemical assay for p16 protein expession was performed in 192 breast carcinoma patients treated with adjuvant chemotherapy. p16 expression was observed in 78 cases (40.6%). The frequency of p16 expression significantly decreased in moderately differentiated (histologic grade II) cancers, 20 (19.6%) of 102. In poorly differentiated cancers (histologic grade III), p16 expression was not observed in all 16 cases. p16 expression was significantly associated with histologic grade of the breast carcinomas (p < 0.001). The proliferative index (PI: S + G2/M) of individual tumors was measured by DNA flow cytometry. In 114 tumors with PI less than 20%, p16 expression was observed in 59 tumors (49.1%). In the tumors with PI equal or more than 20%, p16 expression was observed in 22 (28.2%) of 78 cases. p16 expression was significantly decreased in the tumor with higher PI (p =0.003). For the other clinicopathologic variables, no significant association was found with p16 expression status. Immunohistochemical assay for p53 protein expression was performed on the same breast carcinomas. There was no significant association between p16 and p53 expression in breast carcinomas. During median follow-up period of 52 months (range: 40-72 months), 46 patients (25.8%) had recurrent disease and 32 patients (18.91%) died of recurrent disease. p16 expression was observed in 20 (43.5%) of 46 patients with recurrent disease, while its expression was observed in 58 patients (39.7%) of 146 patients who were free of recurrence during the study period. p16 expression had no significant impact on predicting recurrence of breast carcinoma. Fourteen patients (12.2%) of 114 patients whose tumors did not show p16 expression died of recurrent breast carcinoma, whereas 18 patients (23.1%) of 78 patients with p16 expressing tumor died during the follow-up period. There was a significant difference of patient survival according to p16 expression status (p = 0.039). These results indicate that p16 expression is useful in predicting response to chemotherapy in breast cancer patients. p16 protein seems to have a role in tumor growth and differentiation of the breast carcinoma.
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748
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Kim HJ, Hong YP, Kim SJ, Lew WJ, Lee EG. Ambulatory treatment of multidrug-resistant pulmonary tuberculosis patients at a chest clinic. Int J Tuberc Lung Dis 2001; 5:1129-36. [PMID: 11769771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
SETTING Retrospective cohort analysis of multidrug-resistant tuberculosis (MDR-TB) patients treated at a Korean National Tuberculosis Association out-patient chest clinic. OBJECTIVE To evaluate treatment outcomes and contributing factors. DESIGN A review of clinical records of 1011 pulmonary MDR-TB patients retreated with individualised regimens selected on the basis of previous chemotherapy and drug susceptibility testing from 1988 to 1996. RESULTS The patients (mean age 38.6 years) had resistant organisms to an average of 3.7 drugs and were retreated with an average of 4.2 drugs which they had previously not taken and to which they were susceptible. Treatment outcomes were as follows: 487 cases (48.2%) cured, 82 (8.1%) failed, 394 (39.0%) defaulted, 45 (4.5%) transferred out, and three (0.3%) died. The treatment efficacy among those who completed chemotherapy was 85.6%. In a multivariate analysis favourable response was significantly associated with a greater number of newly prescribed drugs in the regimen to which they were susceptible (odds ratio [OR] 3.6; 95% confidence interval [CI] 1.3-9.5), younger age (OR 2.0; 95%CI 1.1-3.9), and a lower number of drugs to which they were resistant (OR 1.8; 95%CI 1.1-3.1). The case fatality rate, including the follow-up period, was 1.7% (17 cases). CONCLUSION The cure rate of MDR-TB patients treated at an out-patient clinic was 48.2% due to a high defaulter rate (39.0%). However, 85.6% of those who completed treatment were cured.
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749
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Kim HJ, Le QK, Lee MH, Kim TS, Lee HK, Kim YH, Bae K, Lee IS. A cytotoxic secocycloartenoid from Abies koreana. Arch Pharm Res 2001; 24:527-31. [PMID: 11794529 DOI: 10.1007/bf02975159] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two triterpenoids, 24-methylene-3,4-seco-cycloart-4(28)-en-3-oic acid (1) and 3-oxo-9beta-lanosta-7,22Z,24-trien-26,23-olide (6) were isolated from Abies koreana, together with beta-sitosterol (2), maltol (3), beta-sitosterol-O-beta-D-glucoside (4), and hexacosylferulate (5). The structures of the compounds were established based on the spectroscopic data. The cytotoxic activities of triterpenoids have been evaluated using the sulforhodamine B (SRB) method. Compound 1 showed moderate cytotoxicities against human lung carcinoma (A549), ovarian carcinoma (SK-OV-3), malignant melanoma (SK-MEL-2), and colon carcinoma (HCT-15) cell lines.
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750
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Chang WK, Kim HY, Kim DJ, Lee J, Park CK, Yoo JY, Kim HJ, Kim MK, Choi BY, Choi HS, Park KN. Association between Helicobacter pylori infection and the risk of gastric cancer in the Korean population: prospective case-controlled study. J Gastroenterol 2001; 36:816-22. [PMID: 11777209 DOI: 10.1007/s005350170003] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Gastric cancer is still the most common malignant tumor in Koreans. Although many reports have supported the association of Helicobacter pylori infection and the development of gastric cancer, few studies have been adjusted by variable factors such as age. sex, education, and economic status. Furthermore, most results from areas with a high incidence of gastric cancer, such as China and Korea, have failed to document any relationship between H. pylori infection and gastric cancer. We conducted a prospective case-controlled study, with controls matched for and adjusted by age, sex, education, and economic status, to evaluate the causal relationship between H. pylori infection and gastric cancer in Korean people. METHODS From March 1997 to October 1998, 136 consecutive patients with gastric cancer, diagnosed by endoscopic histology, and 136 age- and sex-matched control subjects, confirmed to be free of gastric cancer by endoscopy during the same period, were enrolled in the study. The presence of H. pylori infection was determined by enzyme immunoassay (EIA) serology test. RESULTS Seventy-two of the 136 gastric cancer patients (53%) were positive for H. pylori infection and 54 of the 136 control subjects (40%) were positive for H. pylori infection. The odds ratio (OR), adjusted by variable risk factors, such as age, sex, education, and economic status, for gastric cancer in H. pylori-infected patients was 1.82 (95% confidence internal [CI], 1.10-3.00; P = 0.019). The age- and sex-matched OR by conditional logistic regression was 1.6 (95% CI., 1.01-2.53; P = 0.043). CONCLUSIONS H. pylori infection may be one of the important risk factors for the development of gastric cancer in Korea, an area of high prevalence of H. pylori infection and a high incidence of gastric cancer.
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