801
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Neumeyer JL, Baindur N, Yuan J, Booth G, Seeman P, Niznik HB. Development of a high affinity and stereoselective photoaffinity label for the D-1 dopamine receptor: synthesis and resolution of 7-[125I]iodo-8-hydroxy-3-methyl-1-(4'-azidophenyl)-2,3,4,5-tetrahydro- 1H-3-benzazepine. J Med Chem 1990; 33:521-6. [PMID: 2405157 DOI: 10.1021/jm00164a009] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In an earlier paper, we reported the development of (+-)-7-iodo-8-hydroxy-3-methyl-1-(4'-azidophenyl)-2,3,4,5-tetrahydro- 1H-3-benzazepine (I-MAB) and its 125I analogue ([125I]I-MAB) as selective, high affinity photoaffinity labels for the D-1 dopamine receptor. In this report, we now describe the complete synthesis and resolution of I-MAB and the pharmacological characterization of the stereoisomers in canine striatal membranes. R-(+)-I-MAB showed highly specific dopamine D-1 receptor binding (KD = 0.28 nM) and binds selectively and stereoselectively to the D-1 receptor. These results further confirm the previous suggestion that, in the benzazepine series of DA agonists and antagonists, the activity principally resides in the R-(+) enantiomer, the S-(-) enantiomer being considerably less potent or inactive. Moreover, R-(+)-[125I]I-MAB, upon photolysis, identifies the ligand-binding subunits of the neuronal D-1 receptor, with an apparent Mr of 74,000, 62,000, and 51,000 as assessed by autoradiography following sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Photoincorporation of R-(+)-[125I]I-MAB into these polypeptides was stereoselectively blocked by D-1 dopaminergic ligands with an appropriate pharmacologic profile for the receptor. R-(+)-[125I]I-MAB should thus prove to be a useful stereoselective photoaffinity label for the further characterization of the D-1 receptors.
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802
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Monica ED, Harris MD, Yuan J. Administrative priorities. Decisions and strategies that attract and retain quality staff. CARING : NATIONAL ASSOCIATION FOR HOME CARE MAGAZINE 1990; 9:21-4. [PMID: 10103950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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803
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Kavoussi LR, Yuan J, Andriole GL. Urethral fistula and history of bladder neoplasms. UROLOGIC RADIOLOGY 1989; 11:194-7. [PMID: 2512708 DOI: 10.1007/bf02926513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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804
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Worman HJ, Yuan J, Blobel G, Georgatos SD. A lamin B receptor in the nuclear envelope. Proc Natl Acad Sci U S A 1988; 85:8531-4. [PMID: 2847165 PMCID: PMC282492 DOI: 10.1073/pnas.85.22.8531] [Citation(s) in RCA: 274] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Using a solution binding assay, we show that purified 125I-labeled lamin B binds in a saturable and specific fashion to lamin-depleted avian erythrocyte nuclear membranes with a Kd of approximately 0.2 microM. This binding is significantly greater than the binding of 125I-labeled lamin A and is competitively inhibited by unlabeled ligand. We demonstrate that a 58-kDa integral membrane protein (p58) is a lamin B receptor by virtue of its abundance in the nuclear envelope and association with 125I-labeled lamin B in ligand blotting assays. Specific antibodies raised against p58 recognize one protein in isolated nuclei and partially block 125I-labeled lamin B binding to lamin-depleted nuclear membranes. Cell fractionation and indirect immunofluorescence microscopy show that p58 is located in the periphery of the nucleus. This protein may serve as a membrane attachment site for the nuclear lamina by acting as a specific receptor for lamin B.
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805
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Jackson DA, Yuan J, Cook PR. A gentle method for preparing cyto- and nucleo-skeletons and associated chromatin. J Cell Sci 1988; 90 ( Pt 3):365-78. [PMID: 3075613 DOI: 10.1242/jcs.90.3.365] [Citation(s) in RCA: 109] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We describe a method for permeabilizing and extracting cells that preserves both structure and function whilst allowing the cell derivatives to be handled freely. Cells are encapsulated in microbeads of agarose; the coat of agarose, which is freely permeable to small molecules, forms a protective layer around fragile cell constituents. Cells are then permeabilized by the non-ionic detergent Triton X-100 or antibody and complement in a buffer whose ionic composition mimics that of the cytoplasm. The resulting structures have been characterized morphologically (by immunofluorescence and electron microscopy) and biochemically. Lysis with Triton removes both cell and nuclear membranes, and extracts most of the cytoplasm to leave chromatin surrounded by cytoskeleton; nucleus and cytoplasm then become accessible to triphosphates, enzymes and antibodies. Lysis with complement permeabilizes the cell membrane but leaves the nuclear membrane intact; triphosphates and restriction enzymes, but not antibodies, can then enter both nucleus and cytoplasm. Both types of lysis yield preparations whose chromatin template remains essentially intact, and which is replicated and transcribed at rates close to, or greater than, those found in vivo. Treatment of complement-lysed cells with Triton reduces the very efficient DNA synthesis, implying that the nuclear membrane is involved, directly or indirectly, in replication.
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806
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Della Monica E, Yuan J. Documentation in home care: skilled observation. HOME HEALTHCARE NURSE 1988; 6:39-40. [PMID: 3343141 DOI: 10.1097/00004045-198801000-00009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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807
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Wang ZQ, Chen KQ, Zhang JB, Shen Y, Zhang SF, Zhang QY, Zhang LY, Yuan J, Xue SP. [Nucleic acid hybridization analysis of the regulatory effect of the cytoplasmic factor on the malignancy of myeloma cells. II. Expression of the myc oncogene in homo- and hetero-cellular hybridization]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1987; 9:418-23. [PMID: 2966004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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808
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Harris MD, Peters DA, Smith JA, Yuan J. Tracking the cost of home care. Am J Nurs 1987; 87:1500-2. [PMID: 3674138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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809
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Xu Y, Hu X, Zhang JB, Liu YH, Zhang QY, Yuan J, Xue SP. [PAGE electrophoresis of hemoglobin from reticulocytes of myeloma cell hybrids]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1987; 9:346-50. [PMID: 2968858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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810
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Wang ZQ, Zhang JB, Chen KQ, Zhang SF, Shen Y, Zhang LY, Yuan J, Xue SP. [Nucleic acid hybridization analysis of the regulatory effect of a cytoplasmic factor on the malignancy of myeloma cells. I. Beta-globin gene expression]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1987; 9:339-45. [PMID: 2968857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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811
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Harris MD, Peters DA, Yuan J. Relating quality and cost in a home health care agency. NLN PUBLICATIONS 1987:283-92. [PMID: 3684555] [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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812
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Liu Y, Zhang JB, Zou YH, Yuan J. [Ultrastructure of hypoxic HeLa cells]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1987; 9:287-9, 13-6. [PMID: 2964934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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813
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Harris MD, Peters DA, Yuan J. Relating quality and cost in a home health care agency. QRB. QUALITY REVIEW BULLETIN 1987; 13:175-81. [PMID: 3110720 DOI: 10.1016/s0097-5990(16)30128-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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814
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Zhang JF, Zhang JB, Yuan J. [Experimental studies on the cytotoxic effect of gossypol in mice, rats and human tumor cell lines and its possible mechanism]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1986; 8:486-9. [PMID: 2954681] [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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815
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Xue SP, Zhang JB, Yuan J, Xu Y, Cai YY, Wang ZQ, Liu YH, Li LJ, Hu X. [Studies on the regulatory effect of rabbit reticulocyte cytoplasmic factors on the malignancy of mouse myeloma cells]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1986; 8:339-46. [PMID: 2952304] [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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816
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Acosta AA, Chillik CF, Brugo S, Ackerman S, Swanson RJ, Pleban P, Yuan J, Haque D. In vitro fertilization and the male factor. Urology 1986; 28:1-9. [PMID: 3727220 DOI: 10.1016/0090-4295(86)90170-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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817
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Chen H, Yuan J, Wang Y, Silvers WK. Distribution of ATPase-positive Langerhans cells in normal adult human skin. Br J Dermatol 1985; 113:707-11. [PMID: 2420351 DOI: 10.1111/j.1365-2133.1985.tb02406.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The distribution of ATPase-positive Langerhans cells (LC) was investigated in 117 specimens of normal adult human skin and mucosa taken from different areas of the body. Although there were significant variations in the numbers of LC in each area examined, skin from the face and neck contained the highest density of cells (976 +/- 30.93/mm2). The densities of LC in trunk skin (740 +/- 28.97/mm2), scalp (693 +/- 69.56/mm2) and arm or leg skin (640 +/- 40.95/mm2) were similar. Buccal mucosa had significantly fewer LC (567 +/- 42.94/mm2) than trunk skin, and sacrococcyx skin and palm and sole skin displayed the smallest number of these cells (267 +/- 56.14/mm2 and, 189 +/- 19.15/mm2 respectively). No ATPase-positive LC were detected in the centre of two corneal specimens.
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818
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Zhang JB, Zhang SF, Yuan J, Xu KM. [Comparison of the action of racemic (+/-) and optically active (-and+) gossypols on HeLa cells]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1985; 7:384-7. [PMID: 2938762] [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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819
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Zhang SF, Zhang JB, Yuan J. [Synergic effects of gossypol acetate and sulphadiazine on the LDH-x activity and viability of human sperm]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1985; 7:229-31. [PMID: 2939980] [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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820
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Zhang JB, Yang YZ, Yuan J, Xue SP. [Observations of in vitro fertilization capacity and the transformation of human sperm nuclei before and after administration of gossypol acetic acid]. SHI YAN SHENG WU XUE BAO 1985; 18:59-65. [PMID: 3834722] [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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821
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Yuan J, Hiltner A, Baer E, Rahrig D. The effect of high pressure on the mechanical behavior of short fiber composites. POLYM ENG SCI 1984. [DOI: 10.1002/pen.760241103] [Citation(s) in RCA: 8] [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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822
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Zhang JB, Cai YY, Lu CH, Liu Y, Xu CL, Yuan J. [Preliminary observation on induction of chromosome aberrations and SCE of human peripheral lymphocytes in vitro with microwave]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1984; 6:147-9. [PMID: 6242367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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823
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Zhang JB, Lu CH, Liu Y, Yuan J, Zou YH. [Preliminary observation on killing effect of microwave on human and murine cancerous or normal cells in vitro]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1984; 6:32-4. [PMID: 6238692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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