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Zhong XC, Ouyang X, Liao YB, Tao MZ, Peng J, Long ZQ, Gao XJ, Cao Y, Luo MH, Peng GJ, Zhou ZX, Lei GX. [Research progress on biofilm microecology in chronic suppurative otitis media]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2023; 58:621-625. [PMID: 37339905 DOI: 10.3760/cma.j.cn115330-20230412-00167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/22/2023]
Affiliation(s)
- X C Zhong
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Xiangnan University, Chenzhou 423000, Hunan Province, China Clinical College of Xiangnan University, Chenzhou 423000, Hunan Province, China
| | - X Ouyang
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Xiangnan University, Chenzhou 423000, Hunan Province, China Clinical College of Xiangnan University, Chenzhou 423000, Hunan Province, China
| | - Y B Liao
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Xiangnan University, Chenzhou 423000, Hunan Province, China Clinical College of Xiangnan University, Chenzhou 423000, Hunan Province, China
| | - M Z Tao
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Xiangnan University, Chenzhou 423000, Hunan Province, China Clinical College of Xiangnan University, Chenzhou 423000, Hunan Province, China
| | - J Peng
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Xiangnan University, Chenzhou 423000, Hunan Province, China Clinical College of Xiangnan University, Chenzhou 423000, Hunan Province, China
| | - Z Q Long
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Xiangnan University, Chenzhou 423000, Hunan Province, China Chenzhou Research and Development Center of Diagnosis and Treatment Technology of Hearing and Speech Disease, Chenzhou 423000, Hunan Province, China
| | - X J Gao
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Xiangnan University, Chenzhou 423000, Hunan Province, China Chenzhou Research and Development Center of Diagnosis and Treatment Technology of Hearing and Speech Disease, Chenzhou 423000, Hunan Province, China
| | - Y Cao
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Xiangnan University, Chenzhou 423000, Hunan Province, China
| | - M H Luo
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Xiangnan University, Chenzhou 423000, Hunan Province, China Chenzhou Research and Development Center of Diagnosis and Treatment Technology of Hearing and Speech Disease, Chenzhou 423000, Hunan Province, China
| | - G J Peng
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Xiangnan University, Chenzhou 423000, Hunan Province, China Chenzhou Research and Development Center of Diagnosis and Treatment Technology of Hearing and Speech Disease, Chenzhou 423000, Hunan Province, China Key Laboratory of Medical Imaging and Artificial Intelligence of Hunan Province, Chenzhou 423000, Hunan Province, China
| | - Z X Zhou
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Xiangnan University, Chenzhou 423000, Hunan Province, China
| | - G X Lei
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Xiangnan University, Chenzhou 423000, Hunan Province, China Clinical College of Xiangnan University, Chenzhou 423000, Hunan Province, China Chenzhou Research and Development Center of Diagnosis and Treatment Technology of Hearing and Speech Disease, Chenzhou 423000, Hunan Province, China Key Laboratory of Medical Imaging and Artificial Intelligence of Hunan Province, Chenzhou 423000, Hunan Province, China Hunan Engineering Research Center of Advanced Embedded Computing and Intelligent Medical Systems, Chenzhou 423000, Hunan Province, China
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Zhong XC, Liu YM, Gao XX, Krausz KW, Niu B, Gonzalez FJ, Xie C. Caffeic acid phenethyl ester suppresses intestinal FXR signaling and ameliorates nonalcoholic fatty liver disease by inhibiting bacterial bile salt hydrolase activity. Acta Pharmacol Sin 2023; 44:145-156. [PMID: 35655096 PMCID: PMC9813015 DOI: 10.1038/s41401-022-00921-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 05/10/2022] [Indexed: 01/18/2023] Open
Abstract
Propolis is commonly used in traditional Chinese medicine. Studies have demonstrated the therapeutic effects of propolis extracts and its major bioactive compound caffeic acid phenethyl ester (CAPE) on obesity and diabetes. Herein, CAPE was found to have pharmacological activity against nonalcoholic fatty liver disease (NAFLD) in diet-induced obese mice. CAPE, previously reported as an inhibitor of bacterial bile salt hydrolase (BSH), inhibited BSH enzymatic activity in the gut microbiota when administered to mice. Upon BSH inhibition by CAPE, levels of tauro-β-muricholic acid were increased in the intestine and selectively suppressed intestinal farnesoid X receptor (FXR) signaling. This resulted in lowering of the ceramides in the intestine that resulted from increased diet-induced obesity. Elevated intestinal ceramides are transported to the liver where they promoted fat production. Lowering FXR signaling was also accompanied by increased GLP-1 secretion. In support of this pathway, the therapeutic effects of CAPE on NAFLD were absent in intestinal FXR-deficient mice, and supplementation of mice with C16-ceramide significantly exacerbated hepatic steatosis. Treatment of mice with an antibiotic cocktail to deplete BSH-producing bacteria also abrogated the therapeutic activity of CAPE against NAFLD. These findings demonstrate that CAPE ameliorates obesity-related steatosis at least partly through the gut microbiota-bile acid-FXR pathway via inhibiting bacterial BSH activity and suggests that propolis enriched with CAPE might serve as a promising therapeutic agent for the treatment of NAFLD.
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Affiliation(s)
- Xian-Chun Zhong
- School of Life Sciences, Shanghai University, Shanghai, 200444, China
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Ya-Meng Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Xiao-Xia Gao
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, 20892, Maryland, USA
| | - Kristopher W Krausz
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, 20892, Maryland, USA
| | - Bing Niu
- School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Frank J Gonzalez
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, 20892, Maryland, USA.
| | - Cen Xie
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, 20892, Maryland, USA.
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Zhong XC, Xu W, Zhang Y, Zhang QQ, Du ZJ. Algibacter marinivivus sp. nov., isolated from the surface of a marine red alga. Int J Syst Evol Microbiol 2020; 70:5048-5053. [DOI: 10.1099/ijsem.0.004375] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
A Gram-stain-negative, non-flagellated bacterium, designated ZY111T, was isolated from the surface of a marine red alga, which was collected from the coast in Weihai, Shandong Province, PR China. Strain ZY111T exhibited growth at 4–37 °C (optimum, 25–28 °C) in the presence of 0–8.0 % (w/v) NaCl (optimum, 2.0–4.0% NaCl) and at pH 6.5–9.5 (optimum, pH 7.0–8.0). The 16S rRNA gene sequence analysis revealed that strain ZY111T belonged to the genus
Algibacter
, with
Algibacter amylolyticus
DSM 29199T as its closest relative (97.7 % similarity). The averagenucleotide identity value of strain ZY111T with
A. amylolyticus
DSM 29199T was 79.03 %. The digitalDNA–DNA hybridization value of strain ZY111T with
A. amylolyticus
DSM 29199T was 22.40 %. The dominant fatty acids were iso-C15 : 0, iso-C15 : 1 G, iso-C15 : 0 3-OH and iso-C17 : 0 3-OH. The sole respiratory quinone was determined to be menaquinone-6. The polar lipid profile of strain ZY111T consisted of phosphatidylethanolamine, two unidentified aminolipids and three unidentified lipids. The G+C content was 31.9 mol%. The phenotypic, chemotaxonomic and phylogenetic data clearly showed that strain ZY111T represents a novel species of the genus
Algibacter
, for which the name Algibacter marinivivus sp. nov. is proposed. The type strain is ZY111T (=KCTC 62373T=MCCC 1H00295T).
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Affiliation(s)
- Xian-Chun Zhong
- Marine College, Shandong University, Weihai 264209, PR China
| | - Wei Xu
- Marine College, Shandong University, Weihai 264209, PR China
| | - Yu Zhang
- Marine College, Shandong University, Weihai 264209, PR China
| | - Qi-Qing Zhang
- Marine College, Shandong University, Weihai 264209, PR China
| | - Zong-Jun Du
- Marine College, Shandong University, Weihai 264209, PR China
- State key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, PR China
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Zhang Y, Zhong XC, Xu W, Lu DC, Zhao JX, Du ZJ. Marinobacter vulgaris sp. nov., a moderately halophilic bacterium isolated from a marine solar saltern. Int J Syst Evol Microbiol 2019; 70:450-456. [PMID: 31592762 DOI: 10.1099/ijsem.0.003774] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
A facultatively anaerobic, Gram-stain-negative and non-gliding bacterium, designated F01T, was isolated from marine solar saltern in Weihai, PR China. Cells of F01T were 0.2-0.4 µm wide and 1.4-4.1 µm long, weakly catalase-positive and oxidase-negative. Growth of F01T was determined to occur at 4-40 °C (optimum, 33-37 °C), pH 6.5-8.5 (optimum, 7.0-8.0), and with 0.5-18.0 % (w/v) NaCl (optimum, 3.0-6.0 %). The 16S rRNA gene sequence analysis indicated that F01T represented a member of the genus Marinobacter within the family Alteromonadaceae. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the isolate was most closely related to Marinobacter algicola DSM 16394T, with a sequence similarity of 97.5 %. The DNA G+C content of the isolate was 57.6 mol%. The major respiratory quinone of F01T was ubiquinone-9 (Q-9) and the major fatty acids were anteiso-C15 : 0, C16 : 0 and C18 : 1ω9c. The major polar lipids were phosphoaminolipid, phosphatidylglycerol and phosphatidylethanolamine. On the basis of the results of the phylogenetic analysis and phenotypic properties, it is concluded that F01T can be considered to represent a novel species in the genus Marinobacter, for which the name Marinobacter vulgaris sp. nov. is proposed. The type strain is F01T (=MCCC 1H00290T=KCTC 52700T).
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Affiliation(s)
- Yu Zhang
- College of Marine Science, Shandong University, Weihai 264209, PR China
| | - Xian-Chun Zhong
- College of Marine Science, Shandong University, Weihai 264209, PR China
| | - Wei Xu
- College of Marine Science, Shandong University, Weihai 264209, PR China
| | - De-Chen Lu
- College of Marine Science, Shandong University, Weihai 264209, PR China
| | - Jin-Xin Zhao
- Department of Microbiology, Infection and Immunity Program, Monash Biomedicine Discovery Institute and Monash University, Melbourne 3800, Australia
| | - Zong-Jun Du
- College of Marine Science, Shandong University, Weihai 264209, PR China
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Zhou X, Tian YL, Yu HY, Zhang H, Zhong XC, Liu ZW. Synthesis of hard magnetic NdFeB composite particles by recycling the waste using microwave assisted auto-combustion and reduction method. Waste Manag 2019; 87:645-651. [PMID: 31109566 DOI: 10.1016/j.wasman.2019.02.050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 02/28/2019] [Accepted: 02/28/2019] [Indexed: 06/09/2023]
Abstract
The present work provides a facile and energy-saving approach to recycle Nd-Fe-B wastes. Employing the severely oxidized and contaminated sintered Nd-Fe-B scraps as the raw materials, sub-micro sized Nd-Fe-B/α-Fe composite magnetic powders were successfully synthesized by microwave assisted auto-combustion method followed by a reduction diffusion process. In details, the waste magnets were dissolved in HNO3 solution and both the rare earth oxides and iron oxide were obtained by auto-combustion approach with the help of microwave heating. These oxides were then reduced to achieve Nd-Fe-B alloys with the reducing agent CaH2. To modify the composition of the final product, Nd(NO3)3·6H2O and H3BO3 were added during dissolving and consequently three compositions of the final products were obtained. TEM results demonstrate that the sizes of α-Fe and Nd2Fe14B grains are below 10 nm and 20 nm, respectively. The magnetic properties of the composite powders obtained from the wastes in this study are comparable to those obtained by other methods using pure reagents. The room temperature coercivity of as-synthesized Nd15Fe77B8 is higher than 400 kA/m. In addition, an appropriate mass ratio of CaH2 to Nd-Fe-B oxides is required in order to obtain good magnetic properties.
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Affiliation(s)
- X Zhou
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Y L Tian
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - H Y Yu
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - H Zhang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - X C Zhong
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Z W Liu
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China.
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Ablikim M, Bai JZ, Ban Y, Bian JG, Cai X, Chang JF, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen J, Chen ML, Chen YB, Chi SP, Chu YP, Cui XZ, Dai HL, Dai YS, Deng ZY, Dong LY, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Fu HY, Gao CS, Gao YN, Gong MY, Gong WX, Gu SD, Guo YN, Guo YQ, Guo ZJ, Harris FA, He KL, He M, He X, Heng YK, Hu HM, Hu T, Huang GS, Huang L, Huang XP, Ji XB, Jia QY, Jiang CH, Jiang XS, Jin DP, Jin S, Jin Y, Lai YF, Li F, Li G, Li HB, Li HH, Li J, Li JC, Li QJ, Li RB, Li RY, Li SM, Li WG, Li XL, Li XQ, Li XS, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HM, Liu JB, Liu JP, Liu RG, Liu ZA, Liu ZX, Lu F, Lu GR, Lu JG, Luo CL, Luo XL, Ma FC, Ma JM, Ma LL, Ma QM, Ma XY, Mao ZP, Mo XH, Nie J, Nie ZD, Olsen SL, Peng HP, Qi ND, Qian CD, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tao N, Tian YR, Tong GL, Varner GS, Wang DY, Wang JX, Wang JZ, Wang K, Wang L, Wang LS, Wang M, Wang P, Wang PL, Wang SZ, Wang WF, Wang YF, Wang Z, Wang Z, Wang Z, Wang ZY, Wei CL, Wei DH, Wu N, Wu YM, Xia XM, Xie XX, Xin B, Xu GF, Xu H, Xu Y, Xue ST, Yan ML, Yang F, Yang HX, Yang J, Yang SD, Yang YX, Ye M, Ye MH, Ye YX, Yi LH, Yi ZY, Yu CS, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Yue Q, Zang SL, Zeng Y, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang J, Zhang JY, Zhang JW, Zhang LS, Zhang QJ, Zhang SQ, Zhang XM, Zhang XY, Zhang YJ, Zhang YY, Zhang Y, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JB, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao XJ, Zhao YB, Zhao ZG, Zheng HQ, Zheng JP, Zheng LS, Zheng ZP, Zhong XC, Zhou BQ, Zhou GM, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu Y, Zhu ZA, Zhuang BA, Zou BS. Observation of two new N* peaks in J/psi-->ppi-n and ppi+n decays. Phys Rev Lett 2006; 97:062001. [PMID: 17026161 DOI: 10.1103/physrevlett.97.062001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2004] [Indexed: 05/12/2023]
Abstract
The decay J/psi-->NNpi provides an effective isospin 1/2 filter for the piN system due to isospin conservation. Using 58x10(6) J/psi decays collected with the Beijing Electromagnetic Spectrometer at the Beijing Electron Positron Collider, more than 100 thousand J/psi-->ppi-n+c.c. events are obtained. Besides the two well-known N* peaks at around 1500 MeV/c2 and 1670 MeV/c2, there are two new, clear N* peaks in the ppi invariant mass spectrum around 1360 MeV/c2 and 2030 MeV/c2 with statistical significance of 11sigma and 13sigma, respectively. We identify these as the first direct observation of the N*(1440) peak and a long-sought missing N* peak above 2 GeV/c2 in the piN invariant mass spectrum.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100039, People's Republic of China
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Ablikim M, Bai JZ, Ban Y, Bian JG, Cai X, Chang JF, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen J, Chen ML, Chen YB, Chi SP, Chu YP, Cui XZ, Dai HL, Dai YS, Deng ZY, Dong LY, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Fu HY, Gao CS, Gao YN, Gong MY, Gong WX, Gu SD, Guo YN, Guo YQ, Guo ZJ, Harris FA, He KL, He M, He X, Heng YK, Hu HM, Hu T, Huang GS, Huang L, Huang XP, Ji XB, Jia QY, Jiang CH, Jiang XS, Jin DP, Jin S, Jin Y, Lai YF, Li F, Li G, Li HH, Li J, Li JC, Li QJ, Li RB, Li RY, Li SM, Li WG, Li XL, Li XQ, Li XS, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HM, Liu JB, Liu JP, Liu RG, Liu ZA, Liu ZX, Lu F, Lu GR, Lu JG, Luo CL, Luo XL, Ma FC, Ma JM, Ma LL, Ma QM, Ma XY, Mao ZP, Mo XH, Nie J, Nie ZD, Olsen SL, Peng HP, Qi ND, Qian CD, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tao N, Tian YR, Tong GL, Varner GS, Wang DY, Wang JX, Wang JZ, Wang K, Wang L, Wang LS, Wang M, Wang P, Wang PL, Wang SZ, Wang WF, Wang YF, Wang Z, Wang Z, Wang Z, Wang ZY, Wei CL, Wei DH, Wu N, Wu YM, Xia XM, Xie XX, Xin B, Xu GF, Xu H, Xu Y, Xue ST, Yan ML, Yang F, Yang HX, Yang J, Yang SD, Yang YX, Ye M, Ye MH, Ye YX, Yi LH, Yi ZY, Yu CS, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Yue Q, Zang SL, Zeng Y, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang J, Zhang JY, Zhang JW, Zhang LS, Zhang QJ, Zhang SQ, Zhang XM, Zhang XY, Zhang YJ, Zhang YY, Zhang Y, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JB, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao XJ, Zhao YB, Zhao ZG, Zheng HQ, Zheng JP, Zheng LS, Zheng ZP, Zhong XC, Zhou BQ, Zhou GM, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu Y, Zhu ZA, Zhuang BA, Zou BS. Observation of a threshold enhancement in the plambda invariant-mass spectrum. Phys Rev Lett 2004; 93:112002. [PMID: 15447331 DOI: 10.1103/physrevlett.93.112002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2004] [Indexed: 05/24/2023]
Abstract
An enhancement near the m(p)+M(Lambda) mass threshold is observed in the combined pLambda and pLambda invariant-mass spectrum from J/psi-->pK(-)Lambda;+c.c. decays. It can be fit with an S-wave Breit-Wigner resonance with a mass m=2075+/-12(stat)+/-5(syst) MeV and a width of Gamma=90+/-35(stat)+/-9(syst) MeV; it can also be fit with a P-wave Breit-Wigner resonance. Evidence for a similar enhancement is also observed in psi(')-->pK(-)Lambda;+c.c. decays. The analysis is based on samples of 5.8x10(7)J/psi and 1.4x10(7)psi(') decays accumulated in the BES II detector at the Beijing Electron-Positron Collider.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100039, People's Republic of China
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Bai JZ, Ban Y, Bian JG, Cai X, Chang JF, Chen HF, Chen HS, Chen HX, Chen J, Chen JC, Chen J, Chen ML, Chen YB, Chi SP, Chu YP, Cui XZ, Dai HL, Dai YS, Deng ZY, Dong LY, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Fu HY, Fu LP, Gao CS, Gao ML, Gao YN, Gong MY, Gong WX, Gu SD, Guo YN, Guo YQ, Guo ZJ, Han SW, Harris FA, He J, He KL, He M, He X, Heng YK, Hu HM, Hu T, Huang GS, Huang L, Huang XP, Ji XB, Jia QY, Jiang CH, Jiang XS, Jin DP, Jin S, Jin Y, Lai YF, Li F, Li G, Li HH, Li J, Li JC, Li QJ, Li RB, Li RY, Li SM, Li W, Li WG, Li XL, Li XQ, Li XS, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HM, Liu JB, Liu JP, Liu RG, Liu Y, Liu ZA, Liu ZX, Lu GR, Lu F, Lu JG, Luo CL, Luo XL, Ma FC, Ma JM, Ma LL, Ma XY, Mao ZP, Meng XC, Mo XH, Nie J, Nie ZD, Olsen SL, Peng HP, Qi ND, Qian CD, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Song LW, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tao N, Tian YR, Tong GL, Varner GS, Wang DY, Wang JZ, Wang L, Wang LS, Wang M, Wang M, Wang P, Wang PL, Wang SZ, Wang WF, Wang YF, Wang Z, Wang Z, Wang Z, Wang ZY, Wei CL, Wu N, Wu YM, Xia XM, Xie XX, Xin B, Xu GF, Xu H, Xu Y, Xue ST, Yan ML, Yan WB, Yang F, Yang HX, Yang J, Yang SD, Yang YX, Yi LH, Yi ZY, Ye M, Ye MH, Ye YX, Yu CS, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Yue Q, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang J, Zhang JM, Zhang JY, Zhang JW, Zhang LS, Zhang QJ, Zhang SQ, Zhang XM, Zhang XY, Zhang Y, Zhang YJ, Zhang YY, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JB, Zhao JW, Zhao PP, Zhao WR, Zhao XJ, Zhao YB, Zhao ZG, Zheng HQ, Zheng JP, Zheng LS, Zheng ZP, Zhong XC, Zhou BQ, Zhou GM, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu Y, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zou BS. Observation of the decay psi(2S)-->K0SK0L. Phys Rev Lett 2004; 92:052001. [PMID: 14995298 DOI: 10.1103/physrevlett.92.052001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2003] [Indexed: 05/24/2023]
Abstract
The decay psi(2S)-->K(0)(S)K(0)(L) is observed using psi(2S) data collected with the Beijing Spectrometer at the Beijing Electron-Positron Collider; the branching fraction is determined to be B(psi(2S)-->K(0)(S)K(0)(L))=(5.24+/-0.47+/-0.48)x10(-5). Compared with J/psi-->K(0)(S)K(0)(L), the psi(2S) branching fraction is enhanced relative to the prediction of the perturbative QCD "12%" rule. The result, together with the branching fractions of psi(2S) decays to other pseudoscalar meson pairs (pi(+)pi(-) and K+K-), is used to investigate the relative phase between the three-gluon and the one-photon annihilation amplitudes of psi(2S) decays.
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Affiliation(s)
- J Z Bai
- Institute of High Energy Physics, Beijing 100039, People's Republic of China
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Bai JZ, Ban Y, Bian JG, Cai X, Chang JF, Chen HF, Chen HS, Chen J, Chen J, Chen JC, Chen YB, Chi SP, Chu YP, Cui XZ, Dai YM, Dai YS, Dong LY, Du SX, Du ZZ, Dunwoodie W, Fang J, Fang SS, Fu CD, Fu HY, Fu LP, Gao CS, Gao ML, Gao YN, Gong MY, Gong WX, Gu SD, Guo YN, Guo YQ, Guo ZJ, Han SW, Harris FA, He J, He KL, He M, He X, Heng YK, Hong T, Hu HM, Hu T, Huang GS, Huang L, Huang XP, Izen JM, Ji XB, Jiang CH, Jiang XS, Jin DP, Jin S, Jin Y, Jones BD, Ke ZJ, Kong D, Lai YF, Li F, Li G, Li HH, Li J, Li JC, Li K, Li QJ, Li RB, Li RY, Li W, Li WG, Li XQ, Li XS, Liu CF, Liu CX, Liu F, Liu F, Liu HM, Liu JB, Liu JP, Liu RG, Liu Y, Liu ZA, Liu ZX, Lou XC, Lu GR, Lu F, Lu HJ, Lu JG, Lu ZJ, Luo XL, Ma EC, Ma FC, Ma JM, Malchow R, Mao ZP, Meng XC, Mo XH, Nie J, Nie ZD, Olsen SL, Paluselli D, Peng HP, Qi ND, Qian CD, Qiu JF, Rong G, Shen DL, Shen H, Shen XY, Sheng HY, Shi F, Song LW, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang SQ, Tang X, Tian D, Tian YR, Toki W, Tong GL, Varner GS, Wang J, Wang JZ, Wang L, Wang LS, Wang M, Wang M, Wang P, Wang PL, Wang WF, Wang YF, Wang Z, Wang Z, Wang Z, Wang ZY, Wei CL, Wu N, Xia XM, Xie XX, Xu GF, Xu Y, Xue ST, Yan ML, Yan WB, Yang GA, Yang HX, Yang J, Yang SD, Ye MH, Ye YX, Ying J, Yu CS, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Yue Q, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang J, Zhang JM, Zhang JW, Zhang LS, Zhang QJ, Zhang SQ, Zhang XY, Zhang YJ, Zhang Y, Zhang YY, Zhang ZP, Zhao DX, Zhao J, Zhao JW, Zhao PP, Zhao WR, Zhao YB, Zhao ZG, Zheng JP, Zheng LS, Zheng ZP, Zhong XC, Zhou BQ, Zhou GM, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu Y, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zou BS. Observation of a near-threshold enhancement in the pp mass spectrum from radiative J/psi-->gammapp decays. Phys Rev Lett 2003; 91:022001. [PMID: 12906471 DOI: 10.1103/physrevlett.91.022001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2003] [Indexed: 05/24/2023]
Abstract
We observe a narrow enhancement near 2m(p) in the invariant mass spectrum of pp pairs from radiative J/psi-->gammapp decays. No similar structure is seen in J/psi-->pi(0)pp decays. The results are based on an analysis of a 58 x 10(6) event sample of J/psi decays accumulated with the BESII detector at the Beijing electron-positron collider. The enhancement can be fit with either an S- or P-wave Breit-Wigner resonance function. In the case of the S-wave fit, the peak mass is below 2m(p) at M=1859(+3)(-10) (stat)+5-25(syst) MeV/c(2) and the total width is Gamma<30 MeV/c(2) at the 90% confidence level. These mass and width values are not consistent with the properties of any known particle.
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Affiliation(s)
- J Z Bai
- Institute of High Energy Physics, Beijing 100039, People's Republic of China
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Nagasawa H, Kataoka H, Hori Y, Isogai A, Tamura S, Suzuki A, Guo F, Zhong XC, Mizoguchi A, Fujishita M. Isolation and some characterization of the prothoracicotropic hormone from Bombyx mori. Gen Comp Endocrinol 1984; 53:143-52. [PMID: 6714648 DOI: 10.1016/0016-6480(84)90234-x] [Citation(s) in RCA: 86] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The prothoracicotropic hormone (PTTH) was isolated from adult heads of Bombyx mori. Fifty micrograms of pure PTTH was obtained from 648,000 heads through a 15-step purification procedure with a 2 X 10(6)-fold purification and an 8% recovery. Chemical analyses of this PTTH have shown that it is a single-chain peptide consisting of 40-43 amino acid residues (MW, 4330-4740), the N-terminus of which is glycine. As little as 0.1 ng of PTTH elicited adult development in a debrained pupa of Samia cynthia ricini. Five picograms of PTTH directly stimulated the prothoracic glands in vitro so as to enhance ecdysone release. The hemolymph ecdysteroids of brainless Samia pupae that were developed by PTTH injection increased with essentially the same pattern as in developing normal pupae.
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Nagasawa H, Guo F, Zhong XC, Xia BY, Wang ZS, Qui XJ, Wei DY, Chen EI, Wang JZ, Suzuki A, Isogai A, Hori Y, Tamura S, Ishizaki H. Large-scale purification of prothoracicotropic hormone of the silkworm (Bombyx mori). Sci Sin 1980; 23:1053-60. [PMID: 7444426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Prothoracicotropic hormone has been successfully extracted from as many as 2,800,000 silkworm male adult heads and purified partially through an 8-step procedure. Approximately 7 microgram of the crude preparation ("crude PTTH") shows activity in the debrained Samia pupa test. A further 4-step chromatographic purification of the "crude PTTH" derived from 100,000 Bombyx heads yields 3.4 mg of purified preparation ("highly purified PTTH"), of which 7 ng causes adult development in a debrained Samia pupa.
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