1001
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Liu W, He X, Li B. Numerical study of the quasi-Landau resonances of sodium. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1993; 47:2725-2729. [PMID: 9909243 DOI: 10.1103/physreva.47.2725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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1002
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Monell CR, Hoover DR, Odaka N, He X, Saah AJ, Strand M. Assessment of the antibody response to the immunosuppressive/immunodominant region of HIV gp41 in a 5-year longitudinal study. J Med Virol 1993; 39:125-30. [PMID: 8487036 DOI: 10.1002/jmv.1890390208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The antibody response of HIV-infected individuals to the 581-609 amino acid (aa) region of HIV-1 gp41 containing the putative immunosuppressive and immunodominant sequences was examined. Sera collected every 5 to 6 months over a period of 5 years from 50 HIV-1-infected homosexual and bisexual men, 25 of whom progressed to AIDS during the collection period, were monitored for changes in ELISA reactivity against synthetic peptides encompassing aa581-609 of gp41. The data obtained in this blinded, historical prospective study were analyzed with respect to changes in mean ELISA absorbance over time and differences in absorbance between patient groups (those who progressed to AIDS and those who did not). No correlation was found between time or disease state and the presence of antibodies to the aa581-597 immunosuppressive sequence. In contrast, ELISA absorbance against the aa598-609 immunodominant sequence continued to increase over time in both the AIDS and non-AIDS groups. The rate of increase in absorbance was similar for both groups; however, the AIDS group had a significantly higher mean absorbance level at the outset of the study and maintained this difference throughout the study. This region of gp41 has been proposed to play a role in complement-mediated antibody-dependent enhancement of infection.
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1003
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He X, Ku DN, Moore JE. Simple calculation of the velocity profiles for pulsatile flow in a blood vessel using Mathematica. Ann Biomed Eng 1993; 21:45-9. [PMID: 8434819 DOI: 10.1007/bf02368163] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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1004
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Xi J, He X, Li B. Energy levels of the hydrogen atom in arbitrary magnetic fields obtained by using B-spline basis sets. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 46:5806-5811. [PMID: 9908833 DOI: 10.1103/physreva.46.5806] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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1005
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Lin Z, Zhang H, He X, Lin K, Wang X, Zhuang Y, Wang L, Wei X, Lu Q, Shi A, Dai M, Tian L, Fan G, Li J. Effect of the small-scale auxiliary laser spots on the 3 omega 0/2 harmonic emission. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 46:5123-5129. [PMID: 9908732 DOI: 10.1103/physreva.46.5123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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1006
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Vick WW, Tello JW, Wikstrand CJ, He X, Longee D, Fredman P, Svennerholm L, Bigner DD, Johnston WW, Bigner SH. Application of a panel of antiganglioside monoclonal antibodies to cytologic specimens. Acta Cytol 1992; 36:697-705. [PMID: 1523927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The cytologic evaluation of poorly differentiated tumors frequently poses a diagnostic dilemma as to the tissue of origin. To assess the diagnostic utility of monoclonal antibodies (MAbs) in these situations, we applied a panel of three highly purified MAbs specific for tumor-associated ganglioside epitopes to a diverse series of cytologic specimens. The panel was composed of DMAb-3, reactive with the epitope GalNAc beta 1-4 (NeuAc alpha 2-3)Gal- of GM2; DMAb-7, reactive with the epitope (NeuAc alpha 2-8NeuAc alpha 2-3)Gal beta 1-4(Glc or GlcNAc)- of GD3 and 3'8'-LD1; and DMAb-20, reactive with the epitope GalNAc beta 1-4(NeuAc alpha 2-8NeuAc alpha 2-3)Gal- of GD2. The cytologic material consisted of air-dried Cytospin preparations prepared predominantly from fine needle aspirates and stained with the ABC immunohistochemical method. Positive reactivity was recognized when greater than 5% of tumor cells stained with the antibody; lesser reactivity was called negative. DMAb-3 stained 9/14 (64%) glial tumors, 4/13 (31%) nonglial central nervous system tumors, 1/21 (5%) melanomas, 7/38 (18%) non-small cell carcinomas (NSCC), 1/15 (7%) small cell carcinomas (SCC), 0/9 (0%) lymphomas/leukemias, 2/10 (20%) sarcomas, 1/7 (14%) miscellaneous tumors and 2/2 (100%) reactive fluids. DMAb-7 recognized 14/14 (100%) glial tumors, 9/13 (69%) non-glial central nervous system tumors, 19/22 (86%) melanomas, 19/43 (44%) NSCC, 5/15 (33%) SCC, 2/9 (22%) lymphomas/leukemias, 6/10 (60%) sarcomas, 1/7 (14%) miscellaneous tumors and 4/4 (100%) reactive fluids. DMAb-20 stained 6/14 (43%) glial tumors, 2/13 (15%) nonglial central nervous system tumors, 1/21 (5%) melanomas, 4/38 (10%) NSCC, 0/15 (0%) SCC, 0/9 (0%) lymphomas/leukemias, 1/10 (10%) sarcomas, 1/7 (14%) miscellaneous tumors and 1/3 (33%) reactive fluids. The GD3-reactive DMAb-7 recognized a large portion of many tumor types and thus is not diagnostically useful alone. DMAb-3 and DMAb-20 were more selective and showed the strongest reactivity for glial tumors and minimal reactivity for melanomas, small cell carcinomas, and lymphomas or leukemias. DMAb-3 and DMAb-20 may be useful as components of a larger panel of MAbs in distinguishing between poorly differentiated tumors in samples derived from the central nervous system.
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1007
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Zhang JY, He X, Shih CC, Sorensen SP, Wong CY. Transverse energy and forward energy production in a high energy nuclear collision model. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1992; 46:748-753. [PMID: 9968172 DOI: 10.1103/physrevc.46.748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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1008
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Jaswal SS, He X. Electronic structure and magnetism for a supercell model of Al-Mn quasicrystals. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:495-497. [PMID: 10002239 DOI: 10.1103/physrevb.46.495] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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1009
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Mathis JM, Simmons DM, He X, Swanson LW, Rosenfeld MG. Brain 4: a novel mammalian POU domain transcription factor exhibiting restricted brain-specific expression. EMBO J 1992; 11:2551-61. [PMID: 1628619 PMCID: PMC556730 DOI: 10.1002/j.1460-2075.1992.tb05320.x] [Citation(s) in RCA: 105] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The POU domain gene family of transcription factors share a conserved bipartite DNA binding domain, and exhibit distinct temporal and spatial patterns of expression during development, particularly in the forebrain. A cDNA encoding a new member of the POU-III class of the POU domain gene family, referred to as Brn-4, was isolated from a rat hypothalamic cDNA library. Like other mammalian POU-III genes previously characterized (Brn-1, Brn-2, Tst-1), Brn-4 transcripts are initially widely expressed at all levels of the developing neural tube, but in contrast to other previously described POU-III genes, are subsequently restricted to only a few regions of the adult forebrain, including the supraoptic and paraventricular nuclei of the hypothalamus. Brn-4 was shown to bind to DNA sequences containing the octamer motif and to trans-activate promoters containing this DNA binding motif, based on the actions of a unique N-terminal information. This ontogenic pattern of Brn-4 expression in concert with that of Oct-2 and Pit-1, indicates that certain POU domain genes potentially exert their primary functions widely during early neural development, and in a very limited set of neurons in the mature brain.
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1010
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Gao Z, Zhu Y, Yao C, Li D, He X. Nude mouse interim host model for human parathyroid grafts. I. Structure and secretory function. CHINESE MEDICAL SCIENCES JOURNAL = CHUNG-KUO I HSUEH K'O HSUEH TSA CHIH 1992; 7:92-4. [PMID: 1450399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Human parathyroid (PTG) tissues from cadaver (C-PTG), fetus (F-PTG) and PTG adenoma (A-PTG) were transplanted into the kidney subcapsule of Balb/C nude mice as interim host. The structure and secretory function of the tissues were checked 30, 60, 90, 120, and 150 days after operation. The results showed that PTG tissues from all three donors could retain their structure and secretory function for more than 100 days in the nude mice. The growth and function of PTG tissues from the three donors in nude mice were compared.
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1011
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He X, Kustin K, Parry DL, Robinson WE, Ruberto G, Nakanishi K. In vivo incorporation of 14C-phenylalanine into ascidian tunichrome. EXPERIENTIA 1992; 48:367-71. [PMID: 1582494 DOI: 10.1007/bf01923431] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Ascidia ceratodes exposed to 14C-phenylalanine in the surrounding seawater incorporates the radiolabel into newly biosynthesized tunichrome molecules. Radioactivity can be detected in tunichrome extracted from circulating blood cells within one day following initial exposure to the radiolabel; weak activity (less than or equal to 4 microCi/mol tunichrome = 22 nmol phenylalanine/mol tunichrome) is detected in 1 to 10 days; significantly higher amounts of radiolabel (57 microCi/mol tunichrome = 318 nmol phenylalanine/mol tunichrome) appear 20 days after seawater exposure. Therefore, phenylalanine can function as a precursor in the biosynthesis of tunichrome.
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1012
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Treacy MN, Neilson LI, Turner EE, He X, Rosenfeld MG. Twin of I-POU: A two amino acid difference in the I-POU homeodomain distinguishes an activator from an inhibitor of transcription. Cell 1992; 68:491-505. [PMID: 1346754 DOI: 10.1016/0092-8674(92)90186-g] [Citation(s) in RCA: 81] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
I-POU, a POU domain nuclear protein that lacks two conserved basic amino acids of the POU homeodomain is coexpressed in the developing Drosophila nervous system with a second POU domain transcription factor, Cf1-a. I-POU does not bind to DNA but forms a POU domain-mediated, high affinity heterodimer with Cf1-a, inhibiting its ability to bind and activate the dopa decarboxylase gene. The I-POU/Cf1-a dimerization interface encompasses only the N-terminal basic region and helices 1 and 2 of the POU homeodomains with precise amino acid and alpha-helical requirements. twin of I-POU, an alternatively spliced transcript of the I-POU gene, encodes a protein containing the two basic amino acid residues absent in I-POU. Twin of I-POU is incapable of dimerizing with Cf1-a, but can act as a positive transcription factor on targets distinct from those regulated by Cf1-a. These findings suggest that the I-POU genomic locus simultaneously generates both a specific activator and inhibitor of gene transcription, capable of modulating two distinct regulatory programs during neural development.
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1013
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Dai H, Deng H, He X, Li L, Xia J. [RFLPs study of parental origin and mechanism of 3 cases with X chromosome structural abnormality]. YI CHUAN XUE BAO = ACTA GENETICA SINICA 1992; 19:298-303. [PMID: 1361346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/25/2023]
Abstract
In this study, we analysed the parental origin and mechanism of X chromosome abnormalities in 3 cases by using RFLPs on short or long arm of X chromosome as genetic markers. Their karyotypes were 46,X,dup(X)(p21); 46,X,del(X)(p11); 46,X,i(Xq). The results demonstrated that the dup(X)(p21) and the del(X)(p11) were of paternal origin and i(Xq) was of maternal origin. The dup(X)(p21) arose from an unequal sister chromatid exchange. The del(X) (p11) occurred through X chromosome breakage and deletion mechanism. The i(Xq) resulted from X chromosome centromere misdivision in oocyte.
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1014
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Berger CL, Edelson RL, Edwards N, Sanchez J, Coppey L, He X, Marboe C, Rose E. Autoregulation of the immune response in autoimmune disease and cardiac transplantation by photoinactivated autologous lymphocytes. Ann N Y Acad Sci 1991; 636:266-78. [PMID: 1838910 DOI: 10.1111/j.1749-6632.1991.tb33457.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
These studies demonstrate that photochemotherapy can be successfully evaluated in animal models. The therapy mediates specific suppression of immune responses and appears to operate at the level of the effector T cells. Future studies will focus on isolation and characterization of the host response to photochemotherapy. The extention of this form of therapy to conditions mediated by dysfunctional regulation of effector T cells is already in progress in clinical trials of cardiac allograft transplantation and autoimmune disease. The results of these trials will provide more evidence on the role of this form of therapy in autoregulation of the immune response.
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1015
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Abstract
The large number of transcription factors, their diverse sequence-specific interactions with DNA sites and with other transcription factors, and their ability to be modified in response to a variety of environmental cues and intracellular signals provide combinatorial codes for highly complex and yet highly organized patterns of gene expression likely to underlie the determination of diversity of neuronal phenotypes. Subtle differences in the combinations of transcription factors are likely to have profound consequences for cell phenotype, similar to the mechanism involved in the specification of cell types in yeast (reviewed in Herskowitz, 1989). Although our current understanding of transcriptional regulation in the brain comes largely from phenomenological studies, recent technical progress on two fronts promises a bright future. Homologous recombination technology in embryonic stem cells (reviewed in Capecchi, 1989; Rossant, 1990) allows the disruption of particular genes in transgenic mice and definition of the roles of identified transcription factors in mammalian neurogenesis. A second technological advance, targeted tumorigenesis, has provided neuronal model cell lines (Mellon et al., 1990; reviewed in Cepko, 1988; McKay et al., 1988) that mimic certain neuronal differentiation pathways. These combined genetic, cell biological, and biochemical approaches will greatly facilitate the study of neural development and function.
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1016
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Longee DC, Wikstrand CJ, Månsson JE, He X, Fuller GN, Bigner SH, Fredman P, Svennerholm L, Bigner DD. Disialoganglioside GD2 in human neuroectodermal tumor cell lines and gliomas. Acta Neuropathol 1991; 82:45-54. [PMID: 1659106 DOI: 10.1007/bf00310922] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Monoclonal antibodies (mAbs) recognizing the disialoganglioside II3(NeuAc)2GgOse3Cer (GD2) were produced by immunizing mice with the GD2-expressing neuroblastoma cell line LAN-1 and a prefusion boost with purified GD2 coupled to Salmonella minnesota. Two IgM mAbs were isolated which demonstrated high levels of reactivity (binding ratios in excess of 100) with GD2 by solid-phase radioimmunoassay and positivity in high-performance thin-layer chromatography (HPTLC) immunostain; only one (DMAb-20) was subsequently shown by analysis with a panel of defined ganglioside species to be specific for the minimum epitope of GD2 GalNAc beta 1-4(NeuAc alpha 2-8-NeuAc alpha 2-3)Gal-, DMAb-20 was used to evaluate the expression of GD2 by malignant glioma and medulloblastoma cell lines using cell surface radioimmunoassay. indirect membrane immunofluorescence. HPTLC immunostain, and densitometric analysis of extracted gangliosides from selected cell lines. Sixteen of 20 (80%) malignant glioma and 5 of 5 medulloblastoma cell lines reacted with DMAb-20; in agreement with previous studies, 5 of 5 neuroblastoma and 2 of 3 melanoma cell lines also reacted with DMAb-20, GD2 was proportionally increased in the glioma and medulloblastoma cell lines relative to levels in normal brain, as determined by densitometric analysis. In a phenotypic survey of malignant glioma biopsies, tumor cells in 24 of 30 (80%) cases stained positively with DMAb-20. Reactive astrocytes, both within the adjacent to tumors, were frequently intensely stained. Among the morphological variants of glioblastoma examined, the most intense staining with DMAb-20 was observed in neoplastic gemistocytes, with the weakest or absent staining in small cell glioblastomas. As GD2 is a commonly expressed surface antigen of gliomas and medulloblastomas, expression of which is retained in tissue culture. DMAb-20 will be useful in determining the functional role of GD2 in cell-cell interaction, adhesion, and invasion, and in defining altered growth control mechanisms of central nervous system neoplasms in in vitro models.
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1017
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Treacy MN, He X, Rosenfeld MG. I-POU: a POU-domain protein that inhibits neuron-specific gene activation. Nature 1991; 350:577-84. [PMID: 1673230 DOI: 10.1038/350577a0] [Citation(s) in RCA: 183] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A novel, structurally distinct POU-domain protein has been identified that inhibits activation by another positive POU-domain regulator of neuron-specific transcription units. Two Drosophila POU-domain proteins, I-POU and Cf1-a, are coexpressed in overlapping subsets of neurons during development. Because I-POU lacks two basic residues in the N terminus of its homeodomain, it cannot bind DNA, but it does form a stable heterodimeric complex with Cf1-a, preventing Cf1-a from binding to DNA recognition elements and from transactivating the dopa-decarboxylase gene. The inhibition by I-POU provides a potential strategy by which the activation of genes in development is controlled by a homeodomain-containing protein that does not bind DNA.
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1018
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He X, Gerrero R, Simmons DM, Park RE, Lin CJ, Swanson LW, Rosenfeld MG. Tst-1, a member of the POU domain gene family, binds the promoter of the gene encoding the cell surface adhesion molecule P0. Mol Cell Biol 1991; 11:1739-44. [PMID: 1705013 PMCID: PMC369487 DOI: 10.1128/mcb.11.3.1739-1744.1991] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Tst-1, a member of the POU domain gene family, is expressed in specific neurons and in myelinating glia in the mammalian nervous system. Bacterially expressed Tst-1 binds specifically to the promoter of the gene encoding myelin protein P0, a Schwann cell surface adhesion molecule. In cotransfection assays, Tst-1 can specifically repress the P0 promoter. The N-terminal part of Tst-1 protein is highly glycine- and alanine-rich, a structural feature shared by the helix-loop-helix protein TFEB.
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1019
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Ye X, Randall DJ, He X. The effect of acid water on oxygen consumption, circulating catecholamines and blood ionic and acid-base status in rainbow trout (Salmo gairdneri, Richardson). FISH PHYSIOLOGY AND BIOCHEMISTRY 1991; 9:23-30. [PMID: 24214606 DOI: 10.1007/bf01987608] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/17/1990] [Indexed: 06/02/2023]
Abstract
Chronically cannulated rainbow trout were exposed in acid water (pH 4.0) for 72h. The gill potential was strongly dependent on water pH, being blood side negative in neutral water, but positive in acid water. Catecholamine levels increased irregularly during acid exposure, and the Bohr and Root effects were not completely erased by the effect of catecholamines during acid exposure. Long term exposure to low water pH, although causing an acidosis in the fish, did not suppress resting oxygen consumption. Prolonged exposure to acid conditions, however, resulted in an increase in ammonia excretion. Changes in plasma sodium and chloride were similar to that reported previously for trout exposed to low calcium, acid water. We conclude that exposure of trout to pH 4 soft water, although impairing oxygen transport, does not limit resting oxygen consumption but does reduce the scope for activity. More extreme acid conditions do impair resting oxygen uptake.
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1020
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Li L, He X. [Content of astraglin A in zhongfeng naomai tong oral liquid]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1991; 16:90-1, 127. [PMID: 1872970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Using HPTLC-scanning method, the contents of astraglin A in four kinds of zhongfeng naomai tong oral liquid have been determined to be 0.0018-0.0022%. Simple and easy to use the method is recommended for the quality control of compound preparations containing huangqi.
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1021
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Watkins JF, Edwards NM, Sanchez JA, Ott GY, Coppey LJ, Collett JR, He X, McLaughlin M, Berger CL, Smith CR. Specific elimination of preformed antibody activity against xenogeneic antigens by use of an extracorporeal immunoadsorptive circuit. Transplant Proc 1991; 23:360-4. [PMID: 1990553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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1022
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He X, Joshi GC, Lew H, Volkas RR. New-Z' phenomenology. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1991; 43:R22-R24. [PMID: 10013265 DOI: 10.1103/physrevd.43.r22] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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1023
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Liu Q, Gao R, Wang Y, He X. [A study on treatment of retinal detachment with unseen retinal breaks]. YAN KE XUE BAO = EYE SCIENCE 1990; 6:99-101, 57. [PMID: 2289585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
64 cases (66 eyes) of retinal detachment in which no breaks can be found were treated with pars plana vitrectomy, scleral buckling or encircling procedures. The selection of operation depended on the shape and size of retinal detachment, the position of peripheral retinal lattice degeneration, phakia or aphakia, traumatic situation and the appearance of proliferative vitreoretinopathy. The results showed that the detached retina was successfully reattached in 53 eyes (80.3%), 4 eyes were improved (6%), only 9 eyes failed (16.7%). The technic of operation and application are discussed. We consider that suitable active surgical treatment for this kind of cases is encouraging.
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1024
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He X. [Localization of human testis determining factors on Y chromosome]. ZHONGHUA YI XUE ZA ZHI 1990; 70:694-6, 48. [PMID: 1963375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This is a study of in situ chromosomal hybridization and dot blot and southern blot hybridization using a testis determining factor related probe Y156 in sexually malformed patients. According to the phenotype karyotype analysis and hybridization results of these cases, especially 2 cases with dic (Y) and different breakpoints, we consider that the TDF must be located on YP11.32. The clinical value of Y156 probe is discussed.
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1025
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He X, Schepelmann K, Schaible HG, Schmidt RF. Capsaicin inhibits responses of fine afferents from the knee joint of the cat to mechanical and chemical stimuli. Brain Res 1990; 530:147-50. [PMID: 2271945 DOI: 10.1016/0006-8993(90)90672-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In adult anaesthetized cats we studied the effects of capsaicin on the responses of single slowly conducting afferents of the knee joint to mechanical and chemical stimuli (bradykinin). An intra-arterial bolus injection of capsaicin into the joint reduced or abolished the responses to passive movements of the joint in 8 of 19 afferents and the responses to intra-arterially administered bradykinin in 10 of 11 units. Capsaicin was usually effective at 10(-4) to 10(-3) M. The inhibition was predominantly observed in nociceptive afferents, whereas most low threshold units were not desensitized.
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1026
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Ingraham HA, Albert VR, Chen RP, Crenshaw 3d EB, Elsholtz HP, He X, Kapiloff MS, Mangalam HJ, Swanson LW, Treacy MN. A family of POU-domain and Pit-1 tissue-specific transcription factors in pituitary and neuroendocrine development. Annu Rev Physiol 1990; 52:773-91. [PMID: 2184776 DOI: 10.1146/annurev.ph.52.030190.004013] [Citation(s) in RCA: 82] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The anterior pituitary gland provides a model for investigating the molecular basis for the appearance of phenotypically distinct cell types, within an organ, a central question in development. The rat prolactin and growth hormone genes are selectively expressed in distinct cell types (lactotrophs and somatotrophs) of the anterior pituitary gland, which reflect differential mechanisms of gene activation or restriction because of interactions of multiple factors binding to these genes. We find that the pituitary-specific 33,000 dalton transcription factor, Pit-1, normally expressed in somatotrophs, lactotrophs, and thyrotrophs, can bind to and activate both growth hormone and prolactin promoters in vitro at levels even tenfold lower than those normally present in pituitary cells. In the case of the prolactin gene, high levels of expression in transgenic animals required two cis-active regions; a distal enhancer (-1.8 to -1.5 kb) and a proximal region (-422 to +33 bp). Each of these regions alone can direct low levels of fusion gene expression to prolactin-producing cell types in transgenic mice, but a synergistic interaction between these regions is necessary for high levels of expression. The initial appearance of the prolactin transgene expression closely follows the appearance of high levels of Pit-1, but later increases in expression coincident with appearance of mature lactotrophs suggest the operation of additional, critical positive factor(s). Unexpectedly, transgenes containing the distal enhancer removed from its normal context are expressed in both the prolactin-producing lactotrophs and the TSH-producing thyrotrophs, thereby suggesting that sequences flanking this enhancer are necessary to restrict expression to the correct cell type within the pituitary. These data indicate that distinct processes of gene activation and restriction are necessary for the fidelity of cell-type specific expression within an organ. Consistent with this model, we find that lactotroph cell lines that cannot express the growth hormone gene contain high levels of functional Pit-1. We suggest a large, highly related POU-domain gene family, potentially exceeding 100 members, has been conserved and expanded in evolution to meet the increasing requirements for more intricate patterns of cell phenotypes. The POU-domain subgroup of the homeodomain gene family, in concert with other homeodomain proteins and with other classes of transcription factors, is likely to contribute to the establishment of the mammalian neuroendocrine system.
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1027
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Han G, Wang C, Su X, He X, Wang Y, Kenji M, Osamu T. [Determination of tangshenoside I in Codonopsis pilosula Nannf. by TLC-UV spectrophotometric method]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1990; 15:553-5, 577. [PMID: 2092716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A method of thin layer chromatographic separation and ultraviolet spectrophotometric determination of tangshenoside I in Codonopsis pilosula is described. A comparison of the contents in various samples is made. The contents of tangshenoside I in frosted sample have been found to be twice as much as in normal drug. The recovery of tangshenoside I is 99.92% and the coefficient of variation of eight samplings is 1.77%.
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1028
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Davidsson P, Fredman P, von Holst H, Wikstrand CJ, He X, Bigner DD, Svennerholm L. Circulating glycoconjugates in CSF of meningioma patients. Acta Neurol Scand 1990; 82:203-8. [PMID: 2270748 DOI: 10.1111/j.1600-0404.1990.tb04489.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This study investigated whether tumor-associated gangliosides or glycoproteins may be markers for meningiomas in CSF. The concentrations of a number of gangliosides and sulphatide were determined with specific monoclonal antibodies and cholera toxin B-subunit in a thin-layer chromatography overlay technique. As compared to a reference group of 10 individuals (mean age 50 +/- 14 years), the CSF samples from 7 meningioma patients (mean age 55 +/- 12 years) were found to contain significantly increased concentrations of ganglioside GD3 [II3(NeuAc)2-LacCer], one of the major gangliosides in meningioma tissue specimens. Sulphatide was significantly increased in 6 of 7 patients. Tumor-associated glycoproteins detected by the lectin Ricinus communis 1 in meningioma tissue specimens, but not in normal human brain tissue, were also found in the CSF of the meningioma patients. An early diagnosis of meningiomas might be achieved by the combined assay in CSF of ganglioside GD3 and glycoproteins with Ricinus communis lectin.
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1029
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He X, Atabek O, Giusti-Suzor A. Semiadiabatic treatment of photodissociation in strong laser fields. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 42:1585-1591. [PMID: 9904191 DOI: 10.1103/physreva.42.1585] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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1030
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Knittel JJ, He X. Synthesis and resolution of novel 3'-substituted phenylalanine amides. PEPTIDE RESEARCH 1990; 3:176-81. [PMID: 2134061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A convenient approach to the synthesis of ring-substituted phenylalanine amides is described. Phase transfer alkylation of N-(diphenylmethylene)amino acetonitrile or N-(diphenylmethylene)glycine ethyl ester provides alpha-substituted imines 2 and 6. After acid hydrolysis and esterification, resolution with alpha-chymotrypsin provided 3'-substituted phenylalanine analogs 9a-d which could easily be converted to N alpha-t-butyloxycarbonyl-phenylalanine amides for use in the synthesis of peptide analogs. The approach described here is amenable to the synthesis of 3-substituted phenylalanines with a wide variety of substituents for determination of structure-activity relationships of peptides.
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1031
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Edwards N, Ott G, Berger C, He X, Teppler I, Copey L, Smith C, Reemtsma K, Rose E. Incidence of preformed antibodies against potential xenodonors in human sera. Transplantation 1990; 49:1022-4. [PMID: 2336694 DOI: 10.1097/00007890-199005000-00044] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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1032
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He X, Pakvasa S, Paschos EA, Wu YL. Glueball contribution to KL-->2 gamma and its possible detection in Ds decay. PHYSICAL REVIEW LETTERS 1990; 64:1003-1006. [PMID: 10042138 DOI: 10.1103/physrevlett.64.1003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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1033
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Han G, He X, Yang J, Yuda M, Kasai R, Otani K, Tanaka O. [Chemical constituents of Codonopsis pilosula Nannf]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1990; 15:105-6, 127. [PMID: 2390169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An exclusive constituent has been isolated from the water soluble parts of root of Codonopsis pilosula for the first time. The constituent has been confirmed to be tangshenosid I.
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1034
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Giusti-Suzor A, He X, Atabek O, Mies FH. Above-threshold dissociation of H+2 in intense laser fields. PHYSICAL REVIEW LETTERS 1990; 64:515-518. [PMID: 10042004 DOI: 10.1103/physrevlett.64.515] [Citation(s) in RCA: 102] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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1035
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He X, Joshi GC, Volkas RR. Constraints from anomaly cancellation on strong, weak, and electromagnetic interactions. Int J Clin Exp Med 1990; 41:278-280. [PMID: 10012212 DOI: 10.1103/physrevd.41.278] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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1036
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He X, Wikstrand CJ, Fredman P, Månsson JE, Svennerholm L, Bigner DD. GD3 expression by cultured human tumor cells of neuroectodermal origin. Acta Neuropathol 1989; 79:317-25. [PMID: 2609939 DOI: 10.1007/bf00294668] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Seven monoclonal antibodies (mAbs) reactive with ganglioside II3(NeuAc)2-LacCer (GD3) were generated; four of these mAbs (DMAb-21, DMAb-22, DMAb-23, and DMAb-24) by immunizing mice with GD3 adsorbed to Salmonella minnesota and the remaining three (DMAb-7, DMAb-8, and DMAb-17) with melanoma line SK-MEL 28, which contains 1.4 nmol sialic acid of GD3 per mg protein. The specificities of the mAbs were defined by high-performance thin-layer chromatography (HPTLC) immunostain and solid-phase radioimmunoassay (SP-RIA) with a panel of purified gangliosides. DMAb-7 and DMAb-8 reacted with GD3, IV3(NeuAc)2nLcOse4Cer(3',8'-LD1), and very weakly with IV3(NeuAc)2II3NeuAcGgOse4Cer (GT1a), but not with II3NeuAc-LacCer (GM3), II3NeuAcGgOse3Cer(GM2), II3NeuAcGgOse4Cer (GM1), II3NeuAc, IV3NeuAcGgOse4Cer (GD1a), II3(NeuAc)2GgOse3(GD2), II3(NeuAc)2GgOse4Cer (GD1b), IV3NeuAcII3(NeuAc)2, GgOse4Cer(GT1b), suggesting the binding epitope to be a terminal tetrasaccharide NeuAc alpha 2-8NeuAc alpha 2-3Gal beta 1-4(Glc or GlcNAc). DMAb-7 and DMAb-8 were used to investigate the expression of GD3 on cultured human tumor cells of neuroectodermal origin. Thirteen of 19 gliomas, 3 of 5 medulloblastomas, 5 of 5 neuroblastomas, 2 of 2 melanomas, and 1 of 3 teratomas were shown to react with DMAb-8 and/or DMAb-7 by cell surface-RIA (CS-RIA) and immunofluorescence (IF) assays. HPTLC and densitometric analysis confirmed these results, as positive immunostains in the GD3 region were obtained with oligoganglioside fractions from 9 glioma, 1 medulloblastoma, 2 neuroblastoma, 1 melanoma, and 1 teratoma cell line. Glioma cell line U-105 MG and medulloblastoma cell line Daoy contain GD3 as shown by HPTLC immunostain analysis of extracts, although GD3 was undetectable on the cell surface as determined by CS-RIA and IF.(ABSTRACT TRUNCATED AT 250 WORDS)
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1037
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He X, Joshi GC, Lew H, McKellar BH, Volkas RR. Charge quantization in supersymmetric, technicolor, and composite models. Int J Clin Exp Med 1989; 40:3140-3144. [PMID: 10012178 DOI: 10.1103/physrevd.40.3140] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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1038
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He X, Treacy MN, Simmons DM, Ingraham HA, Swanson LW, Rosenfeld MG. Expression of a large family of POU-domain regulatory genes in mammalian brain development. Nature 1989; 340:35-41. [PMID: 2739723 DOI: 10.1038/340035a0] [Citation(s) in RCA: 701] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A novel region referred to as the POU-domain is present in two tissue-specific transcription factors, Pit-1 and Oct-2, that activate expression of genes specifying pituitary and lymphocyte phenotypes. We report the identification of multiple new members of a large family of POU-domain genes expressed in adult brain, and document that all the known mammalian POU-domain genes, including Pit-1 and Oct-2, are expressed widely in the developing nervous system.
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1039
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Volkas RR, Foot R, He X, Joshi GC. Strong-interaction nonuniversality. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1989; 40:200-206. [PMID: 10011672 DOI: 10.1103/physrevd.40.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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1040
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He X, Atabek O, Giusti-Suzor A. Laser-induced resonances in molecular dissociation in intense fields. PHYSICAL REVIEW. A, GENERAL PHYSICS 1988; 38:5586-5594. [PMID: 9900295 DOI: 10.1103/physreva.38.5586] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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1041
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He X, Schmidt RF, Schmittner H. Effects of capsaicin on articular afferents of the cat's knee joint. AGENTS AND ACTIONS 1988; 25:222-4. [PMID: 3218596 DOI: 10.1007/bf01965017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
This study on the effects of capsaicin on primary afferents from normal knee joints of the cat was performed to further elucidate the mechanisms of articular pain evoked by an acute arthritis and by chemical irritants. It showed that close i.a. bolus injection of capsaicin (10(-7)-10(-4) M) excites most fine articular afferents (conduction velocity less than or equal to 11.3 m/s) whereas fast units are not excited. Fine afferents with low to medium thresholds to knee joint movement are less readily excited by capsaicin than high threshold ones. The response to capsaicin is usually a rapid burst of impulses of a very short latency. This response pattern differs considerably from that seen after application of endogenous substances produced in inflammation. Thus capsaicin seems to differ in its mode of action from that of endogenous algesic substances.
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1042
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He X, Nguyen TD, Volkas RR. B-meson rare decays in two-Higgs-doublet models. PHYSICAL REVIEW. D, PARTICLES AND FIELDS 1988; 38:814-819. [PMID: 9959211 DOI: 10.1103/physrevd.38.814] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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1043
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Adler S, Waterman ML, He X, Rosenfeld MG. Steroid receptor-mediated inhibition of rat prolactin gene expression does not require the receptor DNA-binding domain. Cell 1988; 52:685-95. [PMID: 3345568 DOI: 10.1016/0092-8674(88)90406-0] [Citation(s) in RCA: 184] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Prolactin gene expression is negatively regulated by glucocorticoids, and by estrogens when positive estrogen regulatory elements in the prolactin gene are removed. Mutational analysis of estrogen receptor confirms that inhibition is a function of receptor, and that transcriptional activation and inhibition require distinct, separable structural elements. Inhibition is dependent on a 63 amino acid region (amino acids 251-314) distinct from the DNA-binding and steroid-binding domains. The comparable region of glucocorticoid receptor confers inhibitory actions on a hybrid receptor. Multiple, nonoverlapping sequences in the rat prolactin 5'-flanking genomic region that confer inhibition by both steroid hormones contain related cis-active elements that bind a common, tissue-specific positive transcription factor, called Pit-1. Experimental results indicate that positive and negative transcriptional effects of estrogen receptor are mediated by separate functional domains, and suggest the protein-protein interactions between steroid hormone receptors and other transcription factor(s) mediate inhibition.
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1044
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He X, Proske U, Schaible HG, Schmidt RF. Acute inflammation of the knee joint in the cat alters responses of flexor motoneurons to leg movements. J Neurophysiol 1988; 59:326-40. [PMID: 3351566 DOI: 10.1152/jn.1988.59.2.326] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
1. This is a report of changes in reflex excitability of flexor motoneurons in response to innocuous mechanical stimuli following initiation of an acute experimental inflammation of the knee joint in the chloralose-anaesthetized cat spinalized at level T12. 2. Activity of functionally single alpha- or gamma- motoneurons, identified by ventral root stimulation, was recorded in filaments of the nerve to biceps semitendinosus before and after onset of an acute inflammation. The inflammation was evoked by injection into the knee cavity of the compounds kaolin and carrageenan. 3. Measurements were made of resting activity, responses to local pressure applied to parts of the upper or lower limb, and to flexion or extension movements at the knee joint before and after onset of the inflammation. In two experiments, one in which no inflammation was initiated, and another in which recordings were made only after the inflammation had fully developed, a survey of large numbers of neurons (44 alpha and 84 gamma) showed that under control conditions only 14% of alpha-motoneurons showed a response to mechanical stimulation compared with 41% of gamma-motoneurons. In the presence of an inflammation 41% of alpha-cells were responsive compared with 64% of gamma-cells. 4. Inflammation-induced changes in activity of motoneurons including both excitatory and inhibitory effects, took 1-2 h to fully develop. Excitatory effects included a rise in resting discharge, an increase in the response to local pressure, and an increased response to flexion and/or to extension of the knee. Inhibitory effects included falls in resting discharge and/or in the responses to leg movements. 5. For 35 cells identified as alpha-motoneurons and tested both before and after initiation of an inflammation, 20 remained unresponsive throughout the experiment, whereas 4 that had not responded during the control period began after inflammation to respond to local pressure and/or flexion/extension movements. Of 11 units that exhibited some response before inflammation, 8 showed an increase with inflammation, whereas 2 became unresponsive. 6. The inflammation had rather more dramatic effects on gamma-neurons. Many showed control responses to leg movements, and these were measurably modified by inflammation. Of 56 gamma-cells tested under control conditions, 26 were unresponsive to all stimuli, whereas 30 showed some form of response including activity during flexion and extension movements of the leg. Where responses were tested both before and after onset of an inflammation, 11 of 13 unresponsive units remained unresponsive.(ABSTRACT TRUNCATED AT 400 WORDS)
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1045
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Rosenfeld MG, Glass CK, Adler S, Crenshaw EB, He X, Lira SA, Elsholtz HP, Mangalam HJ, Holloway JM, Nelson C. Response and binding elements for ligand-dependent positive transcription factors integrate positive and negative regulation of gene expression. COLD SPRING HARBOR SYMPOSIA ON QUANTITATIVE BIOLOGY 1988; 53 Pt 1:545-56. [PMID: 3254780 DOI: 10.1101/sqb.1988.053.01.063] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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1046
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Zhang JZ, Cai SP, He X, Lin HX, Lin HJ, Huang ZG, Chehab FF, Kan YW. Molecular basis of beta thalassemia in south China. Strategy for DNA analysis. Hum Genet 1988; 78:37-40. [PMID: 3338793 DOI: 10.1007/bf00291231] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The phenotype of beta thalassemia can be caused by over 40 different mutations. To set up a prenatal diagnosis program using DNA analysis, it is important to determine the type and frequency of mutation in a particular geographic area. We have delineated the molecular lesions that cause beta thalassemia in the Guangdong province of China, and found six mutations in four different haplotypes. The surprising finding that five of these mutations each occur in two different haplotypes suggests the occurrence of crossing over or gene conversion events at the beta-globin locus. The delineation of the haplotypes and mutations will permit the choice of the appropriate probes for prenatal detection of beta thalassemia in this part of China.
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1047
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Wang AQ, Feng SC, He X, Xu RS. [A new sesquiterpene lactone from Sarcandra glabra]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1988; 23:64-6. [PMID: 3400479] [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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1048
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Carpenter SR, Kitchell JF, Hodgson JR, Cochran PA, Elser JJ, Elser MM, Lodge DM, Kretchmer D, He X, von Ende CN. Regulation of Lake Primary Productivity by Food Web Structure. Ecology 1987; 68:1863-1876. [PMID: 29357166 DOI: 10.2307/1939878] [Citation(s) in RCA: 242] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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1049
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Herbert MK, He X, Schmidt RF. Substance P sensitizes group III but not group IV afferent units from cat knee joint to noxious movement. Pain 1987. [DOI: 10.1016/0304-3959(87)91576-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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1050
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Cheng Z, He X, Li Z. Output characteristics of an unstable confocal resonator. APPLIED OPTICS 1985; 24:4260. [PMID: 18224194 DOI: 10.1364/ao.24.004260] [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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