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Yang BX, Fu LL, Wu RH, Li HM, Chen H, Yao JF, Zhang LQ, Zhang R, Ma J. [Three cases of aplastic anemia-paroxysmal nocturnal hemoglobinuria syndrome]. Zhonghua Er Ke Za Zhi 2023; 61:370-372. [PMID: 37011987 DOI: 10.3760/cma.j.cn112140-20220726-00674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Affiliation(s)
- B X Yang
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - L L Fu
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - R H Wu
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - H M Li
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - H Chen
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - J F Yao
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - L Q Zhang
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - R Zhang
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - J Ma
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
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Hu Y, Ma JY, Liu HQ, Yang BX, Zhao SS, Zhang JL, Wu RH. [Clinical and genetic features of seven children with MYH9-related disease]. Zhonghua Er Ke Za Zhi 2021; 59:968-972. [PMID: 34711033 DOI: 10.3760/cma.j.cn112140-20210809-00657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To summarize and analyze of the clinical and genetic characteristics of children with nonmuscle myosin heavy chain 9 (MYH9)-related disease (MYH9-RD). Methods: To screen the patients who were first diagnosed as "chronic/refractory immune thrombocytopenia (ITP) " from April 2016 to May 2019 in Beijing Children's Hospital by genetic and clinical examinations, then the clinical manifestation, laboratory examination and genetics results of 7 children diagnosed with MYH9-RD were collected and summarized retrospectively. Results: Among 7 children diagnosed with MYH9-RD, 3 were males and 4 females. The age of onset was 1.25 (0.41-6.16) years. The course of disease was 2.16 (0.41-8.59) years. The automatic platelet count was (9 (5-30))×109/L. All the cases were found with giant platelets under microscope,and the manual platelet count was (70 (30-100))×109/L. Four cases had skin hemorrhage or epistaxis and 3 cases had no bleeding. All 7 patients had received first-or second-line therapy of ITP, of whom 1 case received splenic embolization, and all the treatments mentioned above were ineffective. Finally, it was confirmed that all 7 patients had heterozygous missense mutations of MYH9 gene by next generation sequencing (NGS), including 2 pedigrees and 5 sporadic cases. Four sporadic mutations occurred in N-terminal globular head domain (HD), and 1 sporadic case with p.D1424N mutations occurred in the C-terminal tail domain (TD). One of the pedigrees also had p.D1424N mutation. The other familial case had a novel variant with one missense variant p.A44D caused by the c.131C>A transition. One of the two p.R702 mutations had kidney damage, and several relatives of the new p.A44D mutations had deafness. Conclusions: In this study, the spontaneous mutations of seven MYH9-RD were common, and all patients were misdiagnosed as ITP, whereas the bleeding was mild and immunotherapy was ineffective. The suspected disease can be identified earlier by manual visual platelet volume and count, which can be confirmed by genetic testing. It is more important to monitor the development of other organs damage instead of thrombocytopenia. For cases with p.R702 mutations the doctor should be aware of kidney damage, and for the cases with novel mutations p.A44D the doctor should be aware of hearing loss.
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Affiliation(s)
- Y Hu
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - J Y Ma
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - H Q Liu
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - B X Yang
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - S S Zhao
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - J L Zhang
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - R H Wu
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
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Kong LQ, Nie Q, Yang BX. [Meigs syndrome presenting with isolated pericardial effusion: a case report]. Zhonghua Xin Xue Guan Bing Za Zhi 2017; 45:442-443. [PMID: 28511334 DOI: 10.3760/cma.j.issn.0253-3758.2017.05.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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Lee SH, Yang BX, Collins JT, Ramanathan M. Thermal management and prototype testing of Compton scattering X-ray beam position monitor for the Advanced Photon Source Upgrade. Rev Sci Instrum 2017; 88:023106. [PMID: 28249483 DOI: 10.1063/1.4975201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Accurate and stable x-ray beam position monitors (XBPMs) are key elements in obtaining the desired user beam stability in the Advanced Photon Source Upgrade. In the next-generation XBPMs for the canted-undulator front ends, where two undulator beams are separated by 1.0 mrad, the lower beam power (<10 kW) per undulator allows us to explore lower-cost solutions based on Compton scattering from a diamond placed edge-on to the x-ray beam. Because of the high peak power density of the x-ray beams, this diamond experiences high temperatures and has to be clamped to a water-cooled heat spreader using thermal interface materials (TIMs), which play a key role in reducing the temperature of the diamond. To evaluate temperature changes through the interface via thermal simulations, the thermal contact resistance (TCR) of TIMs at an interface between two solid materials under even contact pressure must be known. This paper addresses the TCR measurements of several TIMs, including gold, silver, pyrolytic graphite sheet, and 3D graphene foam. In addition, a prototype of a Compton-scattering XBPM with diamond blades was installed at APS Beamline 24-ID-A in May 2015 and has been tested. This paper presents the design of the Compton-scattering XBPM, and compares thermal simulation results obtained for the diamond blade of this XBPM by the finite element method with in situ empirical measurements obtained by using reliable infrared technology.
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Affiliation(s)
- S H Lee
- Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, Illinois 60439, USA
| | - B X Yang
- Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, Illinois 60439, USA
| | - J T Collins
- Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, Illinois 60439, USA
| | - M Ramanathan
- Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, Illinois 60439, USA
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Liu XB, Yang BX, Zhang L, Lu YZ, Gong MH, Tian JK. An in vivo and in vitro assessment of the anti-inflammatory, antinociceptive, and immunomodulatory activities of Clematis terniflora DC. extract, participation of aurantiamide acetate. J Ethnopharmacol 2015; 169:287-294. [PMID: 25910534 DOI: 10.1016/j.jep.2015.04.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [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: 08/05/2014] [Revised: 03/13/2015] [Accepted: 04/10/2015] [Indexed: 06/04/2023]
Abstract
AIM Clematis terniflora DC. has been widely used as a traditional Chinese medicine for the treatment of tonsillitis, rheumatoid arthritis, and prostatitis. Despite its widespread use in China, there are currently no studies systematically examined its therapeutic effects and mechanism of action. As such, the present study was conducted to evaluate the anti-inflammatory, antinociceptive, and immunomodulatory effects of C. terniflora DC. using rodent and cellular models. METHODS The anti-inflammatory properties of the 70% ethanol eluted fraction of the 70% ethanol extract of C. terniflora DC. (EECTD) were evaluated using the xylene-induced ear swelling test, the carrageenan-induced edema model, and the cotton pellet granuloma method. Its antinociceptive activities were determined using both the acetic acid-induced writhing test and the hot plate assay. In parallel, we conducted an in vitro assay in LPS-induced RAW264.7 cells to examine the anti-inflammatory effects of EECTD and its purified form, aurantiamide acetate (AA) on inhibition of nitric oxide (NO) and prostaglandin E2 (PGE2) release. RESULTS EECTD (300mg/kg) significantly reduced the number of writhing, extended the pain response latency, and suppressed xylene-induced ear swelling. Each EECTD treatment group also had significant inhibition of cotton granulation formation in addition to reduced carrageenan-induced paw edema. EECTD was also shown to alleviate signs of inflammation in histopathological paw sections. However, it had a less noticeable effect on mouse ear swelling in the delayed type hypersensitivity test. A purified compound was isolated from EECTD and its structure was identified as AA. In vitro experimental results showed that both EECTD and AA were able to significantly inhibit the release of pro-inflammatory cytokines NO and PGE2 on LPS-induced RAW264.7 cells. CONCLUSION These results suggest that EECTD has significant anti-inflammatory and antinociceptive activities, partially related to one of the active substances identified as AA. We hypothesize that these effects are related to its ability to inhibit the production of cytokines NO and PGE2. However, further work will be needed to determine its exact mechanism of action.
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Affiliation(s)
- X B Liu
- College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, Zhejiang, China; Clinical Pharmaceutical Research Institute, Hunan Cancer Hospital/Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, Hunan, China.
| | - B X Yang
- College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, Zhejiang, China
| | - L Zhang
- College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, Zhejiang, China
| | - Y Z Lu
- College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, Zhejiang, China
| | - M H Gong
- Changshu Qiushi Technology Co. Ltd., Changshu 215500, Jiangsu, China
| | - J K Tian
- College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310027, Zhejiang, China.
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Lu YL, Yang BX, Yin ZN. Immunotargeting of collagenase on thrombus. Int J Nanomedicine 2010; 5:973-82. [PMID: 21187949 PMCID: PMC3010159 DOI: 10.2147/ijn.s13904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
In this study, we aimed to develop a thrombus-targeting delivery system of collagenase bound to a monoclonal antibody, and to investigate the thrombolysis of an immune-conjugate in vitro and in vivo as well as the targeting effect. We prepared the immunizing conjugation of collagenase by the 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide (EDCI) method. In order to conjugate collagenase and a monoclonal antibody, bovine serum albumin was used as a linker, increasing the number of collagenase molecules carried and keeping collagenase and the monoclonal antibody active. In vitro thrombolysis experiments showed that collagenase had a strong dissolving effect on collagen-embolus within 24 hours. We established a rabbit pulmonary embolism model to investigate the thrombolysis effect of collagenase and collagenase immunizing conjugation in vivo. Our results revealed a significant difference between collagenase and collagenase immunizing conjugation (P < 0.05). We also established a rabbit ear edge vein model to investigate the active target of collagenase immunizing conjugation. We found that collagenase immunizing conjugation had active targets, and had a strong ability to dissolve organized thrombi. In conclusion, the thrombus-targeting delivery system of collagenase we developed has active targeting effects on thrombi.
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Affiliation(s)
- Yi-ling Lu
- Key Laboratory of Drug Targeting and Delivery System, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Ben-xia Yang
- Key Laboratory of Drug Targeting and Delivery System, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, People’s Republic of China
| | - Zong-ning Yin
- Key Laboratory of Drug Targeting and Delivery System, West China School of Pharmacy, Sichuan University, Chengdu, Sichuan, People’s Republic of China
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Yang B, Yin Z, Chen G. [Preparation of aerosol of biodegradable multi-function film and investigation of its properties]. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 2006; 23:645-7. [PMID: 16856407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The aerosol of biodegradable multi-function film was prepared by means of two-step methods, and its properties were investigated. The average loading capacity was 4.8603 g; the average leaking rate was 3.03% per year which was less than 5%. And the average ejecting rate was 0.7380 g/s. The results demonstrate that the aerosol of biodegradable multi-function film has met the principles governing the quality of the aerosols.
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Affiliation(s)
- Benxia Yang
- West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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Yang B, Ying Z, Chen Z, Chen G. [The research of film formation properties of the aerosol of biodegradable multi-function film]. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 2006; 23:107-11. [PMID: 16532822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The aerosol of biodegradable multi-function film were prepared, whose properties, affective factors and hemostasis effect were studied. Film formation properties were investigated in different lots of aerosols, including film formation time, uniformity, film particle size and film thickness. Young's modulus was about 0. 0373GPa, and elongation at break was 0. 89% by means of tensile method. It is proved that the aerosol of biodegradable multi-function film is easy to form films and its hemostasis effect is well.
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Affiliation(s)
- Benxia Yang
- West China School of Pharmacy, Sichuan University, Chengdu 610041, China
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Lumpkin AH, Dejus R, Lewellen JW, Berg W, Biedron S, Borland M, Chae YC, Erdmann M, Huang Z, Kim KJ, Li Y, Milton SV, Moog E, Rule DW, Sajaev V, Yang BX. Evidence for microbunching "sidebands" in a saturated free-electron laser using coherent optical transition radiation. Phys Rev Lett 2002; 88:234801. [PMID: 12059368 DOI: 10.1103/physrevlett.88.234801] [Citation(s) in RCA: 3] [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: 07/17/2001] [Revised: 11/26/2001] [Indexed: 05/23/2023]
Abstract
We report the first measurements of z-dependent coherent optical transition radiation (COTR) due to electron-beam microbunching at high gains ( >10(4)) including saturation of a self-amplified spontaneous emission free-electron laser (FEL). In these experiments the fundamental wavelength was near 530 nm, and the COTR spectra exhibit the transition from simple spectra to complex spectra ( 5% spectral width) after saturation. The COTR intensity growth and angular distribution data are reported as well as the evidence for transverse spectral dependencies and an "effective" core of the beam being involved in microbunching.
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Affiliation(s)
- A H Lumpkin
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
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Milton SV, Gluskin E, Arnold ND, Benson C, Berg W, Biedron SG, Borland M, Chae YC, Dejus RJ, Den Hartog PK, Deriy B, Erdmann M, Eidelman YI, Hahne MW, Huang Z, Kim KJ, Lewellen JW, Li Y, Lumpkin AH, Makarov O, Moog ER, Nassiri A, Sajaev V, Soliday R, Tieman BJ, Trakhtenberg EM, Travish G, Vasserman IB, Vinokurov NA, Wang XJ, Wiemerslage G, Yang BX. Exponential Gain and Saturation of a Self-Amplified Spontaneous Emission Free-Electron Laser. Science 2001; 292:2037-41. [PMID: 11358995 DOI: 10.1126/science.1059955] [Citation(s) in RCA: 223] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Self-amplified spontaneous emission in a free-electron laser has been proposed for the generation of very high brightness coherent x-rays. This process involves passing a high-energy, high-charge, short-pulse, low-energy-spread, and low-emittance electron beam through the periodic magnetic field of a long series of high-quality undulator magnets. The radiation produced grows exponentially in intensity until it reaches a saturation point. We report on the demonstration of self-amplified spontaneous emission gain, exponential growth, and saturation at visible (530 nanometers) and ultraviolet (385 nanometers) wavelengths. Good agreement between theory and simulation indicates that scaling to much shorter wavelengths may be possible. These results confirm the physics behind the self-amplified spontaneous emission process and forward the development of an operational x-ray free-electron laser.
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Affiliation(s)
- S V Milton
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA.
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Zhou YX, Qiao WH, Gu WH, Xie H, Tang BS, Zhou LS, Yang BX, Takiyama Y, Tsuji S, He HY, Deng CX, Goldfarb LG, Wang GX. Spinocerebellar ataxia type 1 in China: molecular analysis and genotype-phenotype correlation in 5 families. Arch Neurol 2001; 58:789-94. [PMID: 11346374 DOI: 10.1001/archneur.58.5.789] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
BACKGROUND Twelve genetic types of autosomal dominant hereditary ataxia have been recently identified and the genes responsible for most of them cloned. Molecular identification of the type of ataxia is important to determine the disease prevalence and its natural history in various populations. OBJECTIVES To perform molecular analysis of 75 Chinese families affected with spinocerebellar ataxia (SCA) and to evaluate the spectrum of mutations in these genes and the correlation between genotypes and phenotypes in Chinese patients. SETTING Neurogenetics Unit, China-Japan Friendship Hospital, Beijing, China. METHODS One hundred nine patients from 75 kindreds diagnosed as having autosomal dominant SCA, 16 patients with sporadic SCA or spastic paraplegia, 280 control chromosomes of the Chinese population, and 120 control chromosomes of the Sakha population were selected for this study. We conducted detailed mutational analysis by direct sequencing of polymerase chain reaction products amplified from genomic DNA. RESULTS Spinocerebellar ataxia type 1 (SCA1) was identified in 5 families with 12 studied patients. All affected family members were heterozygous for a CAG repeat expansion in the SCA1 gene containing 51 to 64 trinucleotide repeats. Normal alleles had 26 to 35 repeats. Spinocerebellar ataxia type 1 accounted for 7% of the studied Chinese families with ataxia. In addition, we determined the frequency of a single vs double CAT interruption in 120 control chromosomes of the Siberian Sakha population, which has the highest known prevalence of SCA1, and compared this with 280 control chromosomes from the Chinese populations. The results show that 64.7% of the Siberian normal alleles contain a single CAT interruption, whereas 92% of the Chinese had more than 1 interruption. CONCLUSIONS Spinocerebellar ataxia type 1 is responsible for 7% of affected families in the Chinese population. A correlation between the prevalence of SCA1 and the number of CAT interruptions in the trinucleotide chain suggests that a CAT-to-CAG substitution may have been the initial event contributing to the generation of expanded alleles and influencing relative prevalence of SCA1.
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Affiliation(s)
- Y X Zhou
- Genetics of Development and Disease Branch, Bldg 10/9N104, NIDDK, NIH, 10 Center Dr Bethesda, MD 20892, USA
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Lumpkin AH, Dejus R, Berg WJ, Borland M, Chae YC, Moog E, Sereno NS, Yang BX. First Observation of z-Dependent Electron-Beam Microbunching Using Coherent Transition Radiation. Phys Rev Lett 2001; 86:79-82. [PMID: 11136098 DOI: 10.1103/physrevlett.86.79] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2000] [Indexed: 05/23/2023]
Abstract
We report the first measurements of the electron-beam microbunching z dependence in a self-amplified spontaneous-emission (SASE) free-electron laser (FEL) experiment by the observation of visible wavelength coherent transition radiation (CTR). In this case the fundamental SASE wavelength was at 537 nm, and the CTR exhibited an exponential intensity growth similar to the SASE radiation. In addition, we observed for the first time structure in the CTR angular distribution patterns that may be useful for optimizing SASE FEL performance.
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Affiliation(s)
- AH Lumpkin
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439
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Zhou YX, Wang GX, Tang BS, Li WD, Wang DA, Lee HS, Sambuughin N, Zhou LS, Tsuji S, Yang BX, Goldfarb LG. Spinocerebellar ataxia type 2 in China: molecular analysis and genotype-phenotype correlation in nine families. Neurology 1998; 51:595-8. [PMID: 9710044 DOI: 10.1212/wnl.51.2.595] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Sixteen patients from nine Chinese families with spinocerebellar ataxia type 2 (SCA2) were heterozygous for a CAG repeat expansion in the SCA2 gene containing 37 to 56 repeats, whereas the normal alleles carried 14 to 28 repeats. One or two CAA triplets within the CAG tract were seen in normal, but not in the expanded alleles. A strong inverse correlation was established between the number of CAG repeats and the age of disease onset. SCA2 accounted for 12% of the known Chinese families with spinocerebellar ataxia.
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Affiliation(s)
- Y X Zhou
- Clinical Neurogenetics Unit, Medical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institute of Health, Bethesda, MD 20892-4129, USA
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Zhou YX, Takiyama Y, Igarashi S, Li YF, Zhou BY, Gui DC, Endo K, Tanaka H, Chen ZH, Zhou LS, Fan MZ, Yang BX, Weissenbach J, Wang GX, Tsuji S. Machado-Joseph disease in four Chinese pedigrees: molecular analysis of 15 patients including two juvenile cases and clinical correlations. Neurology 1997; 48:482-5. [PMID: 9040742 DOI: 10.1212/wnl.48.2.482] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Machado-Joseph disease (MJD) is an autosomal dominant neurodegenerative disorder associated with the expansion of a (CAG)n array in the MJD1 gene. We analyzed the sizes of the (CAG)n array using DNA samples from 61 members of four Chinese MJD families and 18 Chinese normal control subjects and confirmed that the (CAG)n array in 15 MJD chromosomes was expanded to 72-86 repeat units. There were no subjects with (CAG)n array sizes intermediate between those of normal and MJD affected groups. Meanwhile, we found a significant negative correlation between the age of onset of symptoms and (CAG)n array size. The largest (CAG)n array of 86 repeat units was in the youngest patient, whose age of onset was 5 years. The intergenerational increase in number of CAG repeat units was associated with the clinical phenomenon of anticipation.
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Wu SL, Zhong ZP, Feng RF, Xing SL, Yang BX, Xu KZ. Electron-impact study in valence and autoionization resonance regions of argon. Phys Rev A 1995; 51:4494-4500. [PMID: 9912137 DOI: 10.1103/physreva.51.4494] [Citation(s) in RCA: 80] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Xing SL, Shi QC, Chen XJ, Xu KZ, Yang BX, Wu SL, Feng RF. Absolute total-cross-section measurements for intermediate-energy electron scattering on C2H2 and CO. Phys Rev A 1995; 51:414-417. [PMID: 9911599 DOI: 10.1103/physreva.51.414] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Shapiro SM, Yang BX, Noda Y, Tanner LE, Schryvers D. Neutron-scattering and electron-microscopy studies of the premartensitic phenomena in NixAl100-x alloys. Phys Rev B Condens Matter 1991; 44:9301-9313. [PMID: 9998910 DOI: 10.1103/physrevb.44.9301] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Yang BX, Su XY, Zhu YZ, Sun K, Xu DQ, Lu ZQ, Jin YH. Inhibition of methyl methanesulfonate-induced unscheduled DNA synthesis in spermatozoa of mice by Poly I-C. Zhongguo Yao Li Xue Bao 1991; 12:497-9. [PMID: 1824000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Methyl methanesulfonate (MMS 75 mg.kg-1)-induced unscheduled DNA synthesis (UDS) was inhibited significantly in the spermatozoa of mice injected with Poly I-C (0.05, 0.50, and 5.00 mg.kg-1) at 4 h prior to ip MMS. Radioactivity was reduced from 53 +/- 3 to 50, 45 +/- 5, and 34 +/- 6 dpm/million sperms respectively. The effects of Poly I-C were dose-dependent (r = 0.9498, P less than 0.05) in inhibition of MMS-induced UDS. The effect of serum collected from the mice injected with Poly I-C (0.50 mg.kg-1) had similar effects as that of Poly I-C. Our findings suggest that both Poly I-C alone and mouse serum induced with Poly I-C may prevent the DNA damage produced by MMS.
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Affiliation(s)
- B X Yang
- Department of Medical Genetics, Norman Bethune University of Medical Science, Changchun, China
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Kiefl RF, Brewer JH, Carolan J, Dosanjh P, Hardy WN, Kadono R, Kempton JR, Krahn R, Schleger P, Yang BX, Zhou H, Luke GM, Sternlieb B, Uemura YJ, Kossler WJ, Yu XH, Ansaldo EJ, Takagi H, Uchida S, Seaman CL. Muon-spin-rotation study of magnetism in La1.85Sr0.15CuO4 and YBa2Cu3Ox below 90 mK. Phys Rev Lett 1989; 63:2136-2139. [PMID: 10040771 DOI: 10.1103/physrevlett.63.2136] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Sham TK, Yang BX, Kirz J, Tse JS. K-edge near-edge x-ray-absorption fine structure of oxygen- and carbon-containing molecules in the gas phase. Phys Rev A Gen Phys 1989; 40:652-669. [PMID: 9902195 DOI: 10.1103/physreva.40.652] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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21
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Uemura YJ, Luke GM, Sternlieb BJ, Brewer JH, Carolan JF, Hardy WN, Kadono R, Kempton JR, Kiefl RF, Kreitzman SR, Mulhern P, Riseman TM, Williams DL, Yang BX, Uchida S, Takagi H, Gopalakrishnan J, Sleight AW, Subramanian MA, Chien CL, Cieplak MZ, Xiao G, Lee VY, Statt BW, Stronach CE, Kossler WJ, Yu XH. Universal correlations between Tc and ns/m (carrier density over effective mass) in high-Tc cuprate superconductors. Phys Rev Lett 1989; 62:2317-2320. [PMID: 10039913 DOI: 10.1103/physrevlett.62.2317] [Citation(s) in RCA: 170] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Shapiro SM, Yang BX, Shirane G, Noda Y, Tanner LE. Neutron scattering study of the martensitic transformation in a Ni-Al beta -phase alloy. Phys Rev Lett 1989; 62:1298-1301. [PMID: 10039634 DOI: 10.1103/physrevlett.62.1298] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Yang BX, Thurston TR, Tranquada JM, Shirane G. Magnetic neutron scattering study of single-crystal cupric oxide. Phys Rev B 1989; 39:4343-4349. [PMID: 9948776 DOI: 10.1103/physrevb.39.4343] [Citation(s) in RCA: 106] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Yang BX, Kiefl RF, Brewer JH, Carolan JF, Hardy WN, Kadono R, Kempton JR, Kreitzman SR, Luke GM, Riseman TM, Williams DL, Uemura YJ, Sternlieb B, Subramanian MA, Strzelecki AR, Gopalakrishnan J, Sleight AW. Static magnetic order in Bi2Sr2YCu2Ox and spin freezing in Bi2SrYCaCu2Ox detected by muon-spin rotation. Phys Rev B Condens Matter 1989; 39:847-850. [PMID: 9947248 DOI: 10.1103/physrevb.39.847] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Mitsuda S, Simizu S, Lukin J, Friedberg SA, Yang BX, Shirane G. Neutron diffraction study of alpha -MnC2O. Phys Rev B Condens Matter 1988; 38:9035-9039. [PMID: 9945688 DOI: 10.1103/physrevb.38.9035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Yang BX, Tranquada JM, Shirane G. Neutron scattering studies of the magnetic structure of cupric oxide. Phys Rev B Condens Matter 1988; 38:174-178. [PMID: 9945174 DOI: 10.1103/physrevb.38.174] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Yang BX, Kirz J, Sham TK. Oxygen K-edge extended x-ray-absorption fine-structure studies of molecules containing oxygen and carbon atoms. Phys Rev A Gen Phys 1987; 36:4298-4310. [PMID: 9899385 DOI: 10.1103/physreva.36.4298] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Abstract
The x-ray absorption cross section of argon was measured in the 1.3-3.8-nm wavelength region. To correct for the presence of higher orders in the monochromator output, a variable pressure technique is used. The results are in good agreement with semiempirical calculations and earlier measurements.
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Yang BX, Kirz J. Extended x-ray absorption fine structure of CO2 analyzed by a new algorithm. Phys Rev B Condens Matter 1987; 35:6100-6106. [PMID: 9940841 DOI: 10.1103/physrevb.35.6100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Tang XF, Yang BX. Clinical and electrophysiological study of a case of Isaacs' syndrome. Chin Med J (Engl) 1985; 98:695-7. [PMID: 3938385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Tang XF, Yang T, Yang BX, Liu XZ, Rong ZP. Electromyographic findings in normal Chinese. Analysis of 310 subjects. Chin Med J (Engl) 1984; 97:613-22. [PMID: 6440753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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Guo YP, Yang BX, Yang YC, Gao SF. [Muscle biopsy in polymyositis; report of 20 cases]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1984; 6:261-3. [PMID: 6241063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Xu XH, Yang BX, Feng YK. [Wilson's disease - clinical analysis of 80 cases]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1981; 3:243-7. [PMID: 6459860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Xu XH, Yang BX, Feng YK. Wilson's disease (hepatolenticular degeneration): clinical analysis of 80 cases. Chin Med J (Engl) 1981; 94:673-8. [PMID: 6797802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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