9151
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Zehner ZE, Li Y, Roe BA, Paterson BM, Sax CM. The chicken vimentin gene. Nucleotide sequence, regulatory elements, and comparison to the hamster gene. J Biol Chem 1987; 262:8112-20. [PMID: 3036797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Here we report the nucleotide sequence of the chicken vimentin gene and its deduced primary amino acid sequence. A comparison of this gene to other intermediate filament protein genes demonstrates that both exon size and position are strongly conserved features of this multigene family. In addition, the hamster and chicken vimentin genes exhibit strong identity at the level of nucleotide (74%) and amino acid (80%) sequence. Interestingly, 40% of total sequence diversity is localized to the N terminus or "head" region of these genes whereas other protein domains (rod and C terminus) are remarkably identical in both nucleotide (81%) and amino acid (89%) sequence. Even stronger amino acid identity (100%) is exhibited in certain subdomains which may define regions crucial for filament formation and function. Not surprisingly, vimentin is more homologous across animal species than it is to other intermediate filament protein members (e.g. desmin) within the same species. A comparison of 5'-flanking sequences of the hamster and chicken genes as well as other characterized promoter elements (SV40, HSV-TK) reveals homologous sequence elements which may define common and/or unique sites involved in the modulation of gene expression. The implications of these sequence elements for both tissue-specific and developmental expression of the vimentin gene are discussed.
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9152
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Li Y, Eichmann G. Conditional symbolic modified signed-digit arithmetic using optical content-addressable memory logic elements. APPLIED OPTICS 1987; 26:2328-2333. [PMID: 20489871 DOI: 10.1364/ao.26.002328] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
A new conditional symbolic substitution rule for modified signed-digit arithmetic computation is introduced. Using this substitution rule, the numbers to be added or subtracted are first replaced by a pair of new equivalent strings, which in a second step are then subject to another substitution to generate both the addition or subtraction result and its complement. For an optical implementation, a holographic contentaddressable memory is used. Correspondingly, the input encoding, the logic reduction, and the optical processing techniques are described.
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9153
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Zehner ZE, Li Y, Roe BA, Paterson BM, Sax CM. The chicken vimentin gene. Nucleotide sequence, regulatory elements, and comparison to the hamster gene. J Biol Chem 1987. [DOI: 10.1016/s0021-9258(18)47536-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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9154
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Pu QL, Li Y, Yang J, Yan SY. [Study on mass spectra of alkaloids from Sophora alopecuroides L]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1987; 22:438-44. [PMID: 3450141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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9155
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Li Y, Zhang TM. [Effect of oridonin on metabolism of thymine nucleotides in tumor cells in mice]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1987; 8:271-4. [PMID: 2959027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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9156
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Li JN, Li Y, Chan JB. [A study of 217 cases of IGA nephropathy]. ZHONGHUA NEI KE ZA ZHI 1987; 26:266-8, 317-8. [PMID: 3652831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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9157
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Liou GI, Li Y, Wang C, Fong SL, Bhattacharya S, Bridges CD. Bgl II RFLP recognized by a human IRBP cDNA localized to chromosome 10. Nucleic Acids Res 1987; 15:3196. [PMID: 2882488 PMCID: PMC340936 DOI: 10.1093/nar/15.7.3196] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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9158
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Eichmann G, Li Y. Compact optical generalized perfect shuffle. APPLIED OPTICS 1987; 26:168335. [PMID: 20454285 DOI: 10.1364/ao.26.1167_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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9159
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Li Y, Zhang B, Christen AG. The historical development of dentistry in China. BULLETIN OF THE HISTORY OF DENTISTRY 1987; 35:21-8. [PMID: 3552087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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9160
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Li Y, Dunipace AJ, Stookey GK. Absence of mutagenic and antimutagenic activities of fluoride in Ames salmonella assays. Mutat Res 1987; 190:229-36. [PMID: 3550448 DOI: 10.1016/0165-7992(87)90001-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The mutagenicity of fluoride (as sodium fluoride, NaF) was investigated with Ames Salmonella/microsome assays in strains of TA97a, TA98, TA100, TA102 and TA1535. The concentrations of NaF tested ranged from 0.44 to 4421 micrograms/plate (0.1 to 1000 ppm F), both with and without microsome activation. In addition, the suggested antimutagenic effect of fluoride was evaluated with known mutagens at various concentrations of NaF (0.44-442.2 micrograms/plate, 0.1-100 ppm F). The data showed that NaF, in amounts from 0.44 to 442.2 micrograms/plate (0.1-100 ppm F), failed to significantly increase the number of the revertants over the number observed in the solvent (distilled deionized water) controls. Increases of NaF to, and beyond, 1100 micrograms/plate (250 ppm F) resulted in a toxic effect and a reduction of the revertants to various degrees among the strains. NaF in the presence of known mutagens did not significantly decrease the number of the revertants. The results of this study indicate that NaF does not have mutagenic or antimutagenic effects in the strains tested with Ames Salmonella assays.
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9161
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Li Y, Golemis E, Hartley JW, Hopkins N. Disease specificity of nondefective Friend and Moloney murine leukemia viruses is controlled by a small number of nucleotides. J Virol 1987; 61:693-700. [PMID: 3468264 PMCID: PMC254008 DOI: 10.1128/jvi.61.3.693-700.1987] [Citation(s) in RCA: 145] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Moloney murine leukemia virus induces T cell lymphomas after injection into NFS mice, whereas the nondefective Friend virus induces erythroleukemias. Previous studies showed that sequences encompassing the viral transcriptional signals in U3 are the primary determinant of this phenotype in recombinants between these two viruses. To more precisely identify the sequences responsible, we constructed additional recombinants, within U3, between Friend and Moloney viruses and assayed these recombinants for for their disease specificity. We found that a fragment 191 bases long that included the direct repeat (enhancer) region plus 22 nucleotides to its 3' side from Friend virus was sufficient to convert Moloney virus to a virus that induced only erythroleukemias. A 171-base-long fragment of Moloney virus, including just the direct repeat, converted Friend virus to a virus that induced primarily lymphomas (about 85% of mice injected). We also constructed Moloney and Friend virus variants with one rather than two copies of the enhancer element. These viruses retained their disease specificity, although they exhibited a marked increase in the latent period of disease induction. Together the results suggest that 25 or fewer nucleotide differences, lying within and also just 3' of the direct repeat, are the primary determinant of the distinct disease specificities of nondefective Friend and Moloney viruses.
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9162
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Li Y, Naqui A, Frey TG, Chance B. A new procedure for the purification of monodisperse highly active cytochrome c oxidase from bovine heart. Biochem J 1987; 242:417-23. [PMID: 3036090 PMCID: PMC1147721 DOI: 10.1042/bj2420417] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A simple and rapid method for the isolation of a large quantity of cytochrome c oxidase from bovine heart mitochondria was developed, based on selective solubilization of mitochondrial protein with first Triton and then lauryl maltoside. Gel filtration shows that the lauryl maltoside-solubilized oxidase preparation is in a hydrodynamically homogeneous state with a Stokes radius of 7.5 +/- 0.2 nm. It contains 8.0 mumol of haem (with an a/a3 ratio of 1)/g of protein. The catalytic constant (maximum turnover number) with respect to cytochrome c approaches 600 S-1. After further purification of the solubilized enzyme on a sucrose-gradient centrifugation, the purified enzyme has a haem content of 10.3 mumol/g of protein and eight major polypeptide bands shown on SDS/polyacrylamide-gel electrophoresis.
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9163
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Eichmann G, Li Y, Alfano RR. Parallel optical logic using optical conjugation. APPLIED OPTICS 1987; 26:194-196. [PMID: 20454101 DOI: 10.1364/ao.26.000194] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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9164
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Wei JY, Li Y, Ragland J. Effect of exercise training on resting blood pressure and heart rate in adult and aged rats. JOURNAL OF GERONTOLOGY 1987; 42:11-6. [PMID: 3794189 DOI: 10.1093/geronj/42.1.11] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
To test the hypothesis that advancing age may have an effect on cardiovascular adaptation (resting blood pressure and heart rate) in response to exercise training, we compared adult (4.5 months at start of training) and aged (21.5 months at start of training) male Fischer 344 rats exercised on a rodent treadmill 5 days/week for 9 weeks. Two additional age-matched control groups were similarly handled and placed on the nonmoving treadmill for the same duration. Chronic exercise did not alter blood pressure in the adult group but lowered resting blood pressure in the aged rats during the midportion of the training period. On the other hand, the adult group demonstrated a significant decrease in the resting heart rate from Weeks 3 through 7 during training, whereas the aged group showed no change in resting heart rate during the entire study. These findings suggest that there may exist an age-related difference in the effect of exercise training on basal cardiovascular homeostasis, which is cardioinhibitory in the adult and vasodepressant in the aged.
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9165
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Yan YZ, Chen XY, Zeng WD, Zhang H, Li Y. [Study on the antiinflammatory effect of "dan-shen injection"]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1986; 8:417-9. [PMID: 2954668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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9166
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Li Y, Chen YX, Yu PL, Ji RY. [Studies on analogs of qinghaosu. VI. Synthesis of dihydroartemisic acid from the degradation product of qinghaosu-diketone]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1986; 21:899-905. [PMID: 3591329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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9167
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Huang GQ, Li Y, Liu YH, Song Y, Xiao YK, Cao JX, Jiang JQ, Hu LF, Sun DT, Yao J. [A study on nucleic acid hybridization of human nasopharyngeal carcinoma with EBV-W fragment probe]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1986; 17:269-72. [PMID: 3032764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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9168
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Ernst N, Drachsel W, Li Y, Block JH, Kreuzer HJ. Field adsorption of helium on tungsten. PHYSICAL REVIEW LETTERS 1986; 57:2686-2689. [PMID: 10033835 DOI: 10.1103/physrevlett.57.2686] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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9169
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Li Y, Eichmann G. Multipass counterrotating wave-plate frequency shifters for heterodyne interferometry. OPTICS LETTERS 1986; 11:718-720. [PMID: 19738738 DOI: 10.1364/ol.11.000718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A multipass counterrotating wave-plate frequency shifter for heterodyne interferometry is proposed. By using this method, with a fixed optical system, it is possible to generate wide, tunable-frequency-shifted signals.
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9170
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Li Y, Erskine JL, Diebold AC. High-resolution electron-energy-loss spectroscopy of hydrogen chemisorption at Nb(100) surfaces: Evidence for subsurface absorption sites. PHYSICAL REVIEW. B, CONDENSED MATTER 1986; 34:5951-5954. [PMID: 9940450 DOI: 10.1103/physrevb.34.5951] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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9171
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Eichmann G, Li Y, Alfano RR. Optical binary coded ternary arithmetic and logic. APPLIED OPTICS 1986; 25:3113. [PMID: 18235585 DOI: 10.1364/ao.25.003113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
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9172
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Li Y, Eichmann G, Alfano RR. Optical computing using hybrid encoded shadow casting. APPLIED OPTICS 1986; 25:2636-2638. [PMID: 20453979 DOI: 10.1364/ao.25.002636] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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9173
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Li Y, Lincoln T, Mendelowitz D, Grossman W, Wei JY. Age-related differences in effect of exercise training on cardiac muscle function in rats. THE AMERICAN JOURNAL OF PHYSIOLOGY 1986; 251:H12-8. [PMID: 3728687 DOI: 10.1152/ajpheart.1986.251.1.h12] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
To test the hypothesis that age may alter the effect of exercise training on myocardial function, we trained young adult (4-5 mo at study initiation) and old (21 mo at initiation) male Fischer 344 rats to run on a rodent treadmill 5 days/wk for 4.5 mo and compared their myocardial function with that of age-matched sedentary controls. Right ventricular papillary muscles were isolated from the young adult and aged animals and stimulated at the length at which developed isometric tension was maximal to contract isometrically at 12/min, bathed in oxygenated modified Krebs solution, and studied at 28 degrees, 32 degrees, 35 degrees, and 38 degrees C. In the absence of cardiac hypertrophy, exercise training significantly reversed the age-related prolongation of isometric contraction duration in the senescent rat (P less than 0.001). However, exercise training prolonged contraction duration in the young adult rat (P less than 0.05). The relaxation phase was more sensitive than the contraction phase to changes in temperature, especially in the aged rat (P less than 0.02). The ratio of developed tension to time-to-peak tension of the isometric twitch was not affected by exercise training. Because exercise training affects cardiac function in opposite directions from young adulthood to senescence, caution is advised in extrapolating results from exercise studies in young adult rats to populations of older animals.
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9174
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Chiang FT, Tang PS, Hsi YJ, Li Y, Zhong MW. [Role of B cells in CFU-mix growth]. SHI YAN SHENG WU XUE BAO 1986; 19:203-10. [PMID: 3495086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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9175
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Wang ZY, Xu YC, Sun YZ, Li Y, Cui SZ, Chen W, Cui SR, Zhang DZ, Ding L. [Combination of radiation, chemotherapy and surgery in rectal cancer--an analysis of 128 patients]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1986; 8:228-30. [PMID: 3017666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The results of 128 patients with rectal cancer treated by the combination of surgery, preoperative radiotherapy and chemotherapy from June 1975 to December 1979 are reported and compared with those by operation alone. The 5 year survival rates of the different groups were: 69.5% (16/23) for radical surgery plus preoperative radiotherapy and chemotherapy (RRCG), 56% (14/25) for radical surgery plus preoperative radiotherapy, 53.8% (7/13) for radical surgery plus chemotherapy and 40% (10/25) for radical surgery alone. The 5 year survival rate of RRCG was significantly higher than that of the radical surgery alone group (P less than 0.05). The authors believe that the combination of preoperative radiotherapy, chemotherapy plus radical surgery improves the 5 year survival rate and is worthy of further study.
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9176
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Wang XH, Yang BF, Li Y, Li WH. [Protective effect of berbamine on myocardial infarction in rabbits and rats]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1986; 7:231-3. [PMID: 2954368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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9177
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Li NY, Li WH, Li Y. [Effects of berbamine on the isolated myocardium in guinea pigs and humans]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1986; 7:222-6. [PMID: 2954366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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9178
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Bates B, Li Y. Multiple-beam grating interferometry: a comparison of techniques applied to the measurement of coating thickness. APPLIED OPTICS 1986; 25:835-836. [PMID: 20448685 DOI: 10.1364/ao.25.000835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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9179
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Houk KN, Paddon-Row MN, Rondan NG, Wu YD, Brown FK, Spellmeyer DC, Metz JT, Li Y, Loncharich RJ. Theory and modeling of stereoselective organic reactions. Science 1986; 231:1108-17. [PMID: 3945819 DOI: 10.1126/science.3945819] [Citation(s) in RCA: 276] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Theoretical investigations of the transition structures of additions and cycloadditions reveal details about the geometries of bond-forming processes that are not directly accessible by experiment. The conformational analysis of transition states has been developed from theoretical generalizations about the preferred angle of attack by reagents on multiple bonds and predictions of conformations with respect to partially formed bonds. Qualitative rules for the prediction of the stereochemistries of organic reactions have been devised, and semi-empirical computational models have also been developed to predict the stereoselectivities of reactions of large organic molecules, such as nucleophilic additions to carbonyls, electrophilic hydroborations and cycloadditions, and intramolecular radical additions and cycloadditions.
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9180
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Stavnezer E, Barkas AE, Brennan LA, Brodeur D, Li Y. Transforming Sloan-Kettering viruses generated from the cloned v-ski oncogene by in vitro and in vivo recombinations. J Virol 1986; 57:1073-83. [PMID: 3005612 PMCID: PMC252841 DOI: 10.1128/jvi.57.3.1073-1083.1986] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The Sloan-Kettering viruses (SKVs) are replication-defective retroviruses that transform avian cells in vitro. Each of the three SKV isolates is a mixture of viruses with genomes ranging in size from 4.1 to 8.9 kilobases (kb) with a predominant genome of 5.7 kb. Using a cDNA representing a sequence, v-ski, that is SKV specific and held in common by the multiple SKV genomes, we generated a restriction map of the 5.7-kb SKV genome and molecularly cloned a ski-containing fragment from SKV proviral DNA. Southern hybridization and sequence analysis showed that the cloned DNA fragment consisted of the 1.3-kb ski sequence embedded in the p19gag sequence and followed by the remaining 5' half of the gag gene and small portions of both the pol and env genes. A large deletion encompassing the 3' half of gag and the 5' 80% of pol was mapped to a position about 1 kb downstream from the 3' ski-gag junction. To determine whether the cloned ski sequence had transforming activity, the ski-containing fragment and a cloned Rous-associated virus 1 (RAV-1) genome were used to construct an analog of the 5.7-kb SKV genome, RAV-SKV. Cotransfection of chicken embryo cells with RAV-SKV and RAV-1 yielded foci of transformed cells whose morphology was identical to that induced by the natural SKVs. The transformed transfected cells produced transforming virus with a 5.7-kb ski-containing genome and synthesized a gag-containing polyprotein of 110 kilodaltons (kDa). Several nonproducer clones of RAV-SKV-transformed cells were analyzed, and most were found to synthesize a 5.7-kb SKV RNA and a 110-kDa polyprotein. One clone was found to contain an 8.9-kb SKV RNA, and this clone synthesized a 125-kDa polyprotein. Since both the 5.7- and 8.9-kb genomes and the 110- and 125-kDa polyproteins had been identified in studies on the natural SKVs, the present results not only demonstrate the transforming activity of these individual SKVs but also suggest mechanisms for their generation.
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9181
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Li Y. [Vascular anatomy of the platysma and clinical use of its musculocutaneus flap]. ZHONGHUA KOU QIANG KE ZA ZHI [CHINESE JOURNAL OF STOMATOLOGY] 1986; 21:107-8. [PMID: 3463465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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9182
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Li Y, Turck CM, Teumer JK, Stavnezer E. Unique sequence, ski, in Sloan-Kettering avian retroviruses with properties of a new cell-derived oncogene. J Virol 1986; 57:1065-72. [PMID: 3754014 PMCID: PMC252840 DOI: 10.1128/jvi.57.3.1065-1072.1986] [Citation(s) in RCA: 149] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The Sloan-Kettering viruses (SKVs) are a group of transforming retroviruses that were isolated from chicken embryo cells which had been infected with the avian leukosis virus transformation-defective Bratislava 77 (tdB77). Each of the SKV isolates was shown to contain multiple genomes of different sizes indicating the presence of several viruses in addition to tdB77. To identify and characterize the putative transforming gene(s) of the SKVs, we used hybridization selection to isolate the fraction of a representative cDNA which was SKV specific. Both solution and blot hybridization studies with viral RNAs showed that the specific probe contained a sequence, ski, that was at least partially held in common by the multiple SKV genomes. This conclusion was confirmed by the observation that a molecularly cloned ski probe also hybridized to each of the multiple SKV genomes. Southern blots of chicken DNA revealed homologs of ski (c-ski) which were not associated with endogenous viral loci. Results showing that c-ski was expressed in polyadenylated cytoplasmic RNA of uninfected chicken cells indicated that it is a functional gene. Other data showed that c-ski was conserved in avian and mammalian evolution, suggesting a functional role for the gene in species other than chickens. Using ski cDNA in solution hybridizations with viral RNAs and in Southern blot hybridization with cloned retroviral oncogenes, we did not detect any relationship between ski and any of 15 previously identified oncogenes.
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9183
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Xia YQ, Zhang D, Yang CX, Xu HL, Li Y, Ma LT. An approach to the effect on tumors of acupuncture in combination with radiotherapy or chemotherapy. J TRADIT CHIN MED 1986; 6:23-6. [PMID: 3016416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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9184
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Li Y, Eichmann G. Moire deflectometry of phase objects using a single grating. APPLIED OPTICS 1986; 25:477-479. [PMID: 20445702 DOI: 10.1364/ao.25.000477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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9185
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Li Y, Eichmann G, Alfano RR. Pulsed-mode laser Sagnac interferometry with applications in nonlinear optics and optical switching. APPLIED OPTICS 1986; 25:209. [PMID: 18231163 DOI: 10.1364/ao.25.000209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
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9186
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Liou GI, Fong SL, Beattie WG, Cook RG, Leone J, Landers RA, Alvarez RA, Wang C, Li Y, Bridges CD. Bovine interstitial retinol-binding protein (IRBP)--isolation and sequence analysis of cDNA clones, characterization and in vitro translation of mRNA. Vision Res 1986; 26:1645-53. [PMID: 3617506 DOI: 10.1016/0042-6989(86)90052-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Three clones for b-IRBP were isolated by anti b-IRBP screening of two bovine retina libraries in the expression vector lambda gt11. The cDNA inserts were then used as hybridization probes to screen and isolate three more clones in a bovine retina library in the non-expression vector lambda gt10. The six overlapping clones generated a b-IRBP cDNA sequence of 3400 nucleotides. An open reading frame encoded the complete amino acid sequences of 8 of the 35 b-IRBP tryptic peptides purified in the present study. One tentative glycosylation site was identified. The coding region was followed by TAG translation terminating codon and an untranslated stretch of about 1700 nucleotides that ended in a sequence containing a presumptive AATAAA polyadenylation signal that was 18 nucleotides upstream from a 10 nucleotide oligo(A) tract. The coding region for b-IRBP would be expected to be 3300 bp long, but Northern blot hybridization experiments performed with bovine retina polyadenylated RNA and probes containing part of the coding region established that the mRNA for b-IRBP consisted of a major species of about 6300 bp, and a minor species of 5200 bp. In vitro translation of bovine retina polyadenylated RNA in a rabbit reticulocyte lysate system yielded an immunoreactive protein that was comparable in size with nonglycosylated, mature IRBP, showing that it is not synthesized from a large precursor, and supporting our finding that the mRNA contains an extensive non-coding region.
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9187
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Chadenas D, Pinsard D, Melliere D, Trouillas J, Zafrani ES, Pradayrol L, Sassolas G, Li Y, Girod C, Aumaitre J. [Endocrine pancreatic tumor secreting somatostatin and somatocrinin]. Presse Med 1985; 14:2129-34. [PMID: 2868453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
A case of endocrine pancreatic tumour secreting the 2 antagonistic peptides that regulate growth hormone, somatostatin and somatocrinin, is reported. Such tumours are extremely rare and only one other case has been published so far, although pancreatic malignant tumours frequently secrete several hormones. In our patient, the association of diabetes with steatorrhoea, hypochlorhydria, anaemia and biliary lithiasis suggested hypersecretion of somatostatin. Acromegaly, suggested by clinical signs, was confirmed by an excess of growth hormone and somatomedin, and pre-operative somatrocrinin assay confirmed its extra-pituitary origin. Finally, the presence of hyperparathyroidism due to parathyroid gland hyperplasia and of a Recklinghausen disease constituted a multiple endocrine neoplasia syndrome. The significance and implications of this double secretion in vivo are discussed.
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9188
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Li Y, Swartz ML, Phillips RW, Moore BK, Roberts TA. Effect of filler content and size on properties of composites. J Dent Res 1985; 64:1396-401. [PMID: 3001160 DOI: 10.1177/00220345850640121501] [Citation(s) in RCA: 203] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Two series of dental composites, along with the unfilled resin matrix, were examined to determine the effects of filler level and size on selected properties. Both series were prepared by incorporating a silanated barium borosilicate filler into a visible-light-activated polyphenylene polymethacrylate resin matrix. One series had a filler particle size of 2 microns, with filler levels of 20, 40, 45, 50, and 53% (vol). The second series contained a 15-microns filler in amounts of 20, 40, 50, 60, and 65% (vol). Tests conducted included: depth of cure as evaluated by hardness, water sorption, compressive strength, stress-strain behavior under slow compression, toothbrush abrasion, and wear by hydroxyapatite. Analysis of the data indicated that increased filler levels resulted in increased hardness, compressive strength and stiffness, and decreased water sorption. Also, there was a slight trend toward improved depth of cure. Incorporation of the 2-microns filler decreased the abrasion resistance of the resins to toothbrushing as compared with the unfilled resin, while addition of the 15-microns filler improved resistance. All filled resins exhibited a significant improvement in resistance to wear by hydroxyapatite as compared with the unfilled resin. There was a trend for increased wear with increased filler level. The particle size of the filler appeared to have a moderate influence on the properties. When compared with 15-microns filled resins of the same filler levels, the 2-micron filled series appeared to have inferior properties in terms of depth of cure, compressive strength, water sorption, and resistance to toothbrush abrasion. Properties which were less affected by particle size were hardness, stiffness, and wear resistance to hydroxyapatite.
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9189
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Conner M, Li Y. Optical generation of the Wigner distribution of 2-D real signals. APPLIED OPTICS 1985; 24:3825. [PMID: 18224126 DOI: 10.1364/ao.24.003825] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
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9190
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Abstract
Structural, magmatic, and isotopic features of the southern Sierra Nevada batholith are deflected clockwise with respect to its central and northern parts. Directions of magnetization at three localities in the southern Sierra Nevada are progressively deflected; this is consistent with the hypothesis that the region was tectonically rotated in an orocline. No paleomagnetic deflection was observed northwest of the White Wolf-Kern Canyon fault system. Oroclinal bending ofa block bounded by the San Andreas, Garlock, and White Wolf-Kern Canyon faults may have occurred before about 16 x l0(6) years ago. The deformation may have been a response to shear at the western boundary of the North American plate caused by oblique subduction.
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9191
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Jia FL, Huang CH, Cai J, Li Y. [Studies on the combined treatment with cyclophosphamide and virus in mice transplanted with S180 ascitic tumor cells]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1985; 7:376-9. [PMID: 2938760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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9192
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Li Y, Ye XL. Chicken heart ubiquinol: cytochrome c reductase--isolation by affinity chromatography and resolution of enzyme into subunits. SCIENTIA SINICA. SERIES B, CHEMICAL, BIOLOGICAL, AGRICULTURAL, MEDICAL & EARTH SCIENCES 1985; 28:1042-50. [PMID: 3016891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Chicken heart mitochondrial ubiquinol: cytochrome c reductase has been isolated as a monodisperse form by solubilization with Triton X-100 in low ionic strength and subsequent affinity chromatography. The enzyme complex contains less than 0.15 mumol ubiquinone and 12 mumol phospholipid per mumol enzyme. The spectrum of cytochrome b in the reduced exhibited two maximum alpha-absorption bands at 558 nm and 562 nm; a shoulder at 553 nm for c1. The purified enzyme complex consists of at least 9 subunits with apparent molecular weight of 47 K, 44 K, 36 K, 31 K, 25 K, 17 K, 15 K, 12 K and 9 K. The enzyme complex has been dissociated into subdomains of subunits in the presence of increasing concentration of salt and Triton X-100. Three subunits carrying the redox centers (cytochrome b, cytochrome c1 and Fe-S protein) have been further isolated.
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9193
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Tzeng L, McBride PL, Cooper PS, Li Y, Majka RD, Sandweiss J, Slaughter AJ, Taft HD, Teig LJ, Johnson ME, Nemethy P. Charm production in neutron-nucleon interactions. PHYSICAL REVIEW LETTERS 1985; 55:1172-1175. [PMID: 10031747 DOI: 10.1103/physrevlett.55.1172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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9194
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Yi YZ, Li Y. [Histochemical and electron microscopic studies of the trabecular meshwork in normal human eyes]. YAN KE XUE BAO = EYE SCIENCE 1985; 1:9-16. [PMID: 2975998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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9195
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Bates B, Catney M, Halliwell D, Noble S, Li Y. Transducers for AO filters: a simple technique for comparing shear wave phase of two piezoelectric transducers. APPLIED OPTICS 1985; 24:2294-2295. [PMID: 20440319 DOI: 10.1364/ao.24.002294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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9196
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Peng TC, Huang ZX, Li Y. [Preliminary studies on the efficacy of treating twice with different virus strains for S180 ascitic mice]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1985; 7:294-7. [PMID: 2939992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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9197
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Li Y. [Determination of serum haptoglobin in hepatolenticular degeneration]. ZHONGHUA SHEN JING JING SHEN KE ZA ZHI = CHINESE JOURNAL OF NEUROLOGY AND PSYCHIATRY 1985; 18:224-5. [PMID: 4075914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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9198
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Kossler WJ, Namkung M, Hitti B, Li Y, Kempton J, Stronach CE, Goode LR, Lankford WF, Patterson BD, Kündig W, Grynszpan RI. Uniaxial stress-induced symmetry breaking for muon sites in Fe. PHYSICAL REVIEW. B, CONDENSED MATTER 1985; 32:293-300. [PMID: 9936665 DOI: 10.1103/physrevb.32.293] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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9199
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Li T, Li Y. Kohn-Sham equation for time-dependent ensembles. PHYSICAL REVIEW. A, GENERAL PHYSICS 1985; 31:3970-3971. [PMID: 9895983 DOI: 10.1103/physreva.31.3970] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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9200
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Ding BC, Li Y, Yang LH. [Effects of hypoxia on mechanical properties of isolated the cat papillary muscle]. SHENG LI XUE BAO : [ACTA PHYSIOLOGICA SINICA] 1985; 37:216-21. [PMID: 3834598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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