201
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Wang YQ, Xiong YS, Yi L, Yao KL. Spin-wave excitation in a quasi-one-dimensional organic ferromagnet. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:8481-8485. [PMID: 9982352 DOI: 10.1103/physrevb.53.8481] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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202
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Jing L, Xishan L, Yi L. High-accuracy calculations of the refractive indices of optical materials in a wide spectral range. APPLIED OPTICS 1996; 35:158-160. [PMID: 21068993 DOI: 10.1364/ao.35.000158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The interaction between light and matter is studied thoroughly by means of the quantum theory. On the basis of it, the refractive indices of types of optical materials are calculated by several formerly experienced formulas. Finally,anew, tested approximate formula with the highest calculated accuracy is obtained, and some groups of valuable parameters are given.
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203
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Sun M, Wei S, Yi L. [Conservative surgery and radiation therapy in the treatment of operable breast cancer]. ZHONGHUA WAI KE ZA ZHI [CHINESE JOURNAL OF SURGERY] 1995; 33:606-8. [PMID: 8731894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Forty-five patients with breast cancer were treated in our hospital by conservative surgery and radiation therapy from 1985 to 1994. There were 22 patients in stage I and 23 in stage II. All the patients were received breast-preserved operation including segmental resection and axillary node dissection. Routine postoperative irradiation was given to the patients with or without regional lymphatic melastasis. The indications of chemotherapy and endocrinotherapy were as same as those of Halsted's radical mastectomy. The duration of following-up was 3-5 years. The 5-year local recurrence was 8.8%. The 5-year OS was 94.1%, and DFS 94.1%.
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204
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Xiong Y, Yi L, Yao K. Static thermodynamic quantities of quantum Heisenberg spin glasses with anisotropic interaction in applied magnetic fields. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:972-978. [PMID: 9978247 DOI: 10.1103/physrevb.51.972] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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205
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Tzahar E, Levkowitz G, Karunagaran D, Yi L, Peles E, Lavi S, Chang D, Liu N, Yayon A, Wen D. ErbB-3 and ErbB-4 function as the respective low and high affinity receptors of all Neu differentiation factor/heregulin isoforms. J Biol Chem 1994; 269:25226-33. [PMID: 7929212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Neu differentiation factor (NDF or heregulin) elevates tyrosine phosphorylation of the ErbB-2 receptor tyrosine kinase, and it was, therefore, thought to function as a ligand of this receptor. However, several lines of evidence raised the possibility that the interaction between NDF and ErbB-2 involves another molecule, which belongs to the family of epidermal growth factor receptors. To address this question we constructed soluble chimeric proteins between alkaline phosphatase and the extracellular domains of ErbB-2 and either ErbB-3 or ErbB-4, two newly recognized members of the epidermal growth factor receptor family. Using the soluble proteins we found that beta isoforms of NDF specifically bind to the ErbB-3 and ErbB-4 receptors but not to the soluble ErbB-2 protein. When ectopically expressed in monkey fibroblasts, the full-length ErbB-3 and ErbB-4 receptors conferred specific binding to NDF. In these cells ErbB-3 displayed lower ligand binding affinity than ErbB-4, but like the latter receptor it preferred to bind the beta isoform over the alpha class of NDFs. These results indicate that both ErbB-3 and ErbB-4 function as physiological receptors of all NDF isoforms and suggest that a still unknown ligand of ErbB-2 exists.
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206
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Tzahar E, Levkowitz G, Karunagaran D, Yi L, Peles E, Lavi S, Chang D, Liu N, Yayon A, Wen D. ErbB-3 and ErbB-4 function as the respective low and high affinity receptors of all Neu differentiation factor/heregulin isoforms. J Biol Chem 1994. [DOI: 10.1016/s0021-9258(17)31521-1] [Citation(s) in RCA: 123] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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207
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Toral J, Hu W, Yi L, Barrett JE, Sokol PT, Ziai MR. Use of cultured human neuroblastoma cells in rapid discovery of the voltage-gated potassium-channel blockers. J Pharm Pharmacol 1994; 46:731-4. [PMID: 7530770 DOI: 10.1111/j.2042-7158.1994.tb03892.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Depolarization of human neuroblastoma cells by high concentrations of extracellular potassium ions, leads to the activation of the voltage-gated potassium channels. The activity of such potassium channels can be effectively and rapidly monitored by tracking the efflux of 86Rb from pre-loaded target cells in response to the depolarizing stimulus. The inclusion of compounds with unknown activity in the assay medium, can result in the identification of novel blockers of the voltage-gated potassium channels. Since this functional assay is performed in 96-well microtitre plates, it represents a rapid and high-volume primary screening method for the detection and identification of the voltage-gated potassium-channel blockers, which may have therapeutic utility in several indications including memory degeneration and cardiac arrhythmias.
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208
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Sokol PT, Hu W, Yi L, Toral J, Chandra M, Ziai MR. Cloning of an apamin binding protein of vascular smooth muscle. JOURNAL OF PROTEIN CHEMISTRY 1994; 13:117-28. [PMID: 7912073 DOI: 10.1007/bf01891999] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The receptor for the bee venom derived neurotoxin, apamin, is widely believed to be an integral component of the small conductance calcium-activated potassium channel in many excitable cells. By affinity chromatography on immobilized apamin, a 78 kD apamin binding protein of the bovine brain synaptosomes was isolated. Antibodies were elicited against this protein and used to clone a cDNA from a porcine vascular smooth muscle expression library. This gene (Kcal 1.8) codes for a 438 amino protein with four potential transmembrane domains, one putative calcium binding site, a protein kinase C phosphorylation site, and a leucine zipper motif. Kcal 1.8 encoded protein has no significant sequence homologies with any known ion channels or receptors. Kcal 1.8 is likely to encode a protein associated with the small conductance calcium-activated potassium channel in vascular smooth muscle.
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MESH Headings
- Amino Acid Sequence
- Animals
- Antibodies, Monoclonal
- Apamin/metabolism
- Binding Sites
- Blotting, Northern
- Blotting, Western
- Brain/metabolism
- Calcium/metabolism
- Cattle
- Cell Line
- Chromatography, Affinity
- Cloning, Molecular/methods
- Electrophoresis, Polyacrylamide Gel
- Gene Library
- Humans
- Leucine Zippers
- Melanoma
- Molecular Sequence Data
- Molecular Weight
- Muscle, Smooth, Vascular/metabolism
- Neuroblastoma
- Poly A/analysis
- Poly A/biosynthesis
- Potassium Channels/biosynthesis
- Potassium Channels/chemistry
- Potassium Channels/isolation & purification
- Protein Structure, Secondary
- RNA, Messenger/analysis
- RNA, Messenger/biosynthesis
- Recombinant Proteins/biosynthesis
- Recombinant Proteins/chemistry
- Swine
- Synaptosomes/metabolism
- Tumor Cells, Cultured
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209
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Yi L, Büttner G, Usadel KD, Yao K. Quantum Heisenberg spin glass with Dzyaloshinskii-Moriya interactions. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:254-261. [PMID: 10004440 DOI: 10.1103/physrevb.47.254] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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210
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Yi L, Yao K. Resistivity of dilute magnetic alloys. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:1202-1205. [PMID: 10003314 DOI: 10.1103/physrevb.46.1202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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211
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Sarid D, Chen T, Howells S, Gallagher M, Yi L, Lichtenberger D, Nebesney K, Ray C, Huffman D, Lamb L. Buckyball-substrate interactions probed by STM and AFM. Ultramicroscopy 1992. [DOI: 10.1016/0304-3991(92)90331-d] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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212
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Yi L, Yi Z, Xiyu S, Lianke S. Birefringence measurement by the self-compensation method. APPLIED OPTICS 1992; 31:2968-2969. [PMID: 20725232 DOI: 10.1364/ao.31.002968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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213
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Yao K, Yi L. Low-temperature conductivity of dilute alloys in a weak magnetic field. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:190-195. [PMID: 9998234 DOI: 10.1103/physrevb.44.190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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214
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Yi L, Xu ST, Ou YQ. [Effect of scopolamine and picrotoxin on the learning-dependent long-term synaptic potentiation]. SHENG LI XUE BAO : [ACTA PHYSIOLOGICA SINICA] 1990; 42:340-7. [PMID: 2263955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The purpose of this study was to investigate the effects of microinjection of scopolamine, a M-cholinergic antagonist and picrotoxin, a GABA-ergic antagonist into the rat hippocampal CA3 area on the learning-dependent long-term potentiation (LDLTP) during the establishment, extinction and re-establishment of conditioned drinking response. Following stimulation of the perforant path, field potentials of hippocampal CA3 of freely moving rats were recorded. The results were as follows: the synaptic efficacy and the development of LDLTP in hippocampal CA3 were depressed significantly by scopolamine, but the extinction of LDLTP was accelerated. Picrotoxin significantly enhanced synaptic efficacy and facilitated the development of LDLTP, but it depressed the extinction of LDLTP. Meanwhile, the establishment or extinction of drinking conditioning was correspondingly depressed or accelerated. Moreover, the development of LDLTP and its extinction preceded the development and extinction of drinking conditioning. The results provide further evidence indicating that LDLTP might be one of the neuronal mechanisms underlying behavioral learning and memory. Moreover, it seems that M-cholinergic receptors and GABA-ergic receptors in rat hippocampal CA3 area are involved in the development and retention of LDLTP.
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215
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Yi L, Xu ST, Ou YQ. [The learning dependent long-term synaptic potentiation in the rat hippocampal CA3 region]. SHENG LI XUE BAO : [ACTA PHYSIOLOGICA SINICA] 1989; 41:223-30. [PMID: 2781307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The purpose of this study is to investigate the changes of synaptic efficacy in the rat hippocampal CA3 region during establishment, extinction and re-establishment of conditioned drink response by means of implanted electrodes and behavioral observation. The monosynaptic population excitatory postsynaptic potential (EPSPs) and population spike (PS) elicited by stimulating the perforant path were recorded. The results showed that the long-term potentiation (LTP) in the hippocampal CA3 region appeared with the establishment of conditioned response, the LTP extinguished with experimental extinction of conditioned response and reappeared during the re-establishment of conditioned response. Moreover, both maximal level of LTP and its complete extinction preceded those of conditioned behavior, suggesting that the LTP was learning-dependent. In addition, the enhanced PS was not presented immediately after behavioral training, and developed within subsequent 24 h, with a maximum at the 4th hour. The magnitude of conditioned response depended on the level of LTP. A cross-correlation analysis of the slopes of PS and EPSPs indicated that the changes of PS were caused by alterations of synaptic transmission. These results suggest that the learning-dependent LTP might be one of the neuronal substrates underlying behavioral learning and memory.
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216
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Li YW, Wu B, Zhao ZH, Yi L, Liu HY, Huang M, Wang XQ, Wu M. Studies on mechanism of entry of EB virus into non-B lymphocytes. Establishment of an EB virus-producing human-tupaia hybrid cell line TuH18. SCIENTIA SINICA. SERIES B, CHEMICAL, BIOLOGICAL, AGRICULTURAL, MEDICAL & EARTH SCIENCES 1984; 27:284-93. [PMID: 6089329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
With the use of the EB virus-producing lymphoblastoid cell line H18, an attempt was made to infect the monolayer cell culture of nasopharyngeal tissue from the normal tupaia, and an EB virus-producing, human-tupaia hybrid cell line was established. The mechanism of entry of EB virus into cells other than B lymphocytes is discussed in this paper.
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217
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Shepu X, Shudong Z, Shuyun S, Yanwan W, Yi L, Zenghua Z, Xixin M. Antispermatogenic effect of gossypol on the germinal epithelium of the rat testes. A cytological, autoradiographical and ultrastructural observation. SCIENTIA SINICA 1980; 23:642-57. [PMID: 7403840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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