6501
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Jones AA, McAfee PC, Robinson RA, Zinreich SJ, Wang H. Failed arthrodesis of the spine for severe spondylolisthesis. Salvage by interbody arthrodesis. J Bone Joint Surg Am 1988; 70:25-30. [PMID: 3275674] [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: 01/05/2023]
Abstract
Four patients who had had grade-III or grade-IV symptomatic spondylolisthesis and a failed posterior or posterolateral arthrodesis were treated with transperitoneal anterior lumbosacral interbody arthrodesis and fixation with a fibular graft; the procedure was sometimes followed by posterolateral arthrodesis of the spine. The patients were examined ten to twenty-two years after the salvage operation. At follow-up, all had a solid fusion of the fifth lumbar to the first sacral vertebra. No neurological deficits had worsened and no iatrogenic neurological deficits had developed. The slip angle had improved by an average of 23.2 degrees (range, 12 to 35 degrees).
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6502
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Van Dop C, Wang H, Mulaikal RM, Tolo VT, Rosenbaum AE. Pseudopseudohypoparathyroidism with spinal cord compression. Pediatr Radiol 1988; 18:429-31. [PMID: 3174285 DOI: 10.1007/bf02388057] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We describe a patient with pseudopseudohypoparathyroidism who had an osseous tubercle on the anterolateral margin of the foramen magnum causing compression of the spinal cord. This patient had no evidence for any endocrinopathies and had no other spinal canal anomalies. We suggest that the morphologic phenotype found in patients with pseudopseudohypoparathyroidism, also known as Albright's hereditary osteodystrophy, has an associated risk for spinal cord compression due to congenital vertebral anomalies. The poor recovery of neurologic function following spinal decompression mandates prompt recognition and therapy of this condition in patients with Albright's hereditary osteodystrophy.
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6503
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Reid CS, Pyeritz RE, Kopits SE, Maria BL, Wang H, McPherson RW, Hurko O, Phillips JA. Cervicomedullary cord compression in young children with achondroplasia: value of comprehensive neurologic and respiratory evaluation. BASIC LIFE SCIENCES 1988; 48:199-206. [PMID: 3240254 DOI: 10.1007/978-1-4684-8712-1_29] [Citation(s) in RCA: 5] [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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6504
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Jiao SS, Zhang WC, Cao JK, Zhang ZM, Wang H, Ding MC, Zhang Z, Sun JB, Sun YC, Shi MT. Study of adrenal medullary tissue transplantation to striatum in parkinsonism. PROGRESS IN BRAIN RESEARCH 1988; 78:575-80. [PMID: 3247452 DOI: 10.1016/s0079-6123(08)60333-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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6505
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Wang H, Wu M, Patt D, Murphy B, Mapletoft R. Superovulation in beef heifers with PMSG: Effect of dose and monoclonal antibodies to PMSG. Theriogenology 1988. [DOI: 10.1016/0093-691x(88)90151-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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6506
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Wu M, Wang H, Xu K, Mapletoft R. The effect of estradiol with Synchro-Mate-B in the superovulation of beef heifers with FSH-P. Theriogenology 1988. [DOI: 10.1016/0093-691x(88)90161-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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6507
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Guo R, Kang EH, Wang H, Yang XF, Liu MY, Qin HX, Li QH, Zhuang JY, Liu KM. Studies on antigenic variation of types I and III poliovirus using neutralizing monoclonal antibody. Chin Med J (Engl) 1988; 101:32-6. [PMID: 2847901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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6508
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Wang H, Koschinsky M, Hamerton JL. Localization of the processed gene for human ceruloplasmin to chromosome region 8q21.13----q23.1 by in situ hybridization. CYTOGENETICS AND CELL GENETICS 1988; 47:230-1. [PMID: 3416657 DOI: 10.1159/000132556] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A processed gene for human ceruloplasmin has been localized to 8q21.13---q23.1 by in situ hybridization. This result confirms the assignment of this locus to chromosome 8 by Southern blot analysis using human x hamster somatic-cell hybrids and localizes the gene to the long arm of chromosome 8.
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6509
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Pan XY, Li FQ, Yu RJ, Xie GF, Wang H, Zhao LY, Zhang Q. [Experimental chemotherapy of human gastric cancer cell lines in vitro and in nude mice]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1988; 10:15-8. [PMID: 2843330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Cytotoxic effects of allyl trisulfide (Alt, a synthetic chemical identical with one of the main active principles of garlic), 5 FU, MMC and DDP on SGC 7901 ( a moderately differentiated human gastric adenocarcinoma cell line) and MGC 803 (a poorly differentiated human gastric mucoadenocarcinoma cell line) had been reported before. In this paper, effects of repeated two doses of each drug and the combination of two drugs on these two cell lines were studied using relative clone-survival test. The inhibitory effects of Alt, MMC alone or combined on MGC tumor in nude mice were observed. No drug resistance was found when any one of the four agents at the same concentration were repeated twice separately at 60 hour interval in vitro. The cytotoxic effect of the repeated two doses was approximately equal to that of the single dose at double concentration. The in vitro test of combinations of two drugs showed that Alt plus MMC or 5 FU plus DDP had markedly synergistic effect on MGC cells; 5 FU plus DDP had markedly synergistic effect on SGC cells. The inhibition test on the growth of MGC tumor in nude mice indicated that the inhibition rates of Alt, MMC alone or combined were 58.3%, 86.3% and 84.3%. The systemic toxic effect of MMC alone was severe, whereas Alt alone or MMC plus Alt showed mild toxicity. For this reason, Alt plus MMC is recommended for clinical trials on poorly differentiated gastric cancer. In addition, for the comparison of in vitro test dose and clinical dose of each drug, the principle of clinical adult dose range (CADR) is proposed.
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6510
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Uematsu S, Wang H, Hurko O, Kopits SE. The subarachnoid fluid space in achondroplastic spinal stenosis: the surgical implication. BASIC LIFE SCIENCES 1988; 48:275-81. [PMID: 3240262 DOI: 10.1007/978-1-4684-8712-1_37] [Citation(s) in RCA: 4] [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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6511
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Wang H, Chang H, Wysk RA, Chandawarkar A. On the Efficiency of NC Tool Path Planning for Face Milling Operations. ACTA ACUST UNITED AC 1987. [DOI: 10.1115/1.3187141] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Face milling operations are important for producing flat machined surfaces. Existing methodologies to generate NC tool path for face milling are employed everyday by manufacturing industries without considering the impact of tool path selection. A systematic study has been conducted in order to identify those critical control parameters affecting length of cut in face milling operations. Basic polygons, from triangles to heptagons, were planned using both window frame and stair case milling procedures. For each polygon, each vertex was introduced as a possible starting point for a single run in the window frame milling. The cutting orientation was further examined for stair case milling by enumerating the tool sweep angle from 0 to 180 (and 180 to 0 as well) degrees from each vertex. The results are analyzed and important conclusions are drawn noting the efficiency of the cutting process.
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6512
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Shen RF, Li Y, Sifers RN, Wang H, Hardick C, Tsai SY, Woo SL. Tissue-specific expression of the human alpha 1-antitrypsin gene is controlled by multiple cis-regulatory elements. Nucleic Acids Res 1987; 15:8399-415. [PMID: 2823229 PMCID: PMC306367 DOI: 10.1093/nar/15.20.8399] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Human alpha 1-antitrypsin (AAT) is expressed in the liver, and a 318 bp fragment immediately flanking the CAP site of the gene was found to be sufficient to drive the expression of a reporter gene (CAT) specifically in hepatoma cells. The enhancing activity however, was orientation-dependent. The DNA fragment was separated into a distal region and a proximal region. A "core enhancer" sequence GTGGTTTC is present within the distal region and is capable of activity enhancement in both orientations when complemented by the proximal region in the sense orientation. The results strongly suggest that there are multiple cis-acting elements in the human AAT gene that confer cell specificity for its expression. Nuclear proteins prepared from the hepatoma cells bound specifically to the proximal region in a band-shifting assay that was resistant to competition by the globin promoter DNA. Foot-printing analysis showed a protected domain within the proximal region that contains a nearly perfect palindromic sequence TGGTTAATATTCACCA, which may be important in the regulation of AAT expression in the liver.
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6513
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Chen HZ, Ghaffari A, Wang H, Morkoç H, Yariv A. Continuous-wave operation of extremely low-threshold GaAs/AlGaAs broad-area injection lasers on (100) Si substrates at room temperature. OPTICS LETTERS 1987; 12:812-813. [PMID: 19741881 DOI: 10.1364/ol.12.000812] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Room-temperature continuous-wave operation of large-area (120 microm x 980 microm) GaAs/AlGaAs graded-refractive-index separate-confinement heterostructure lasers on (100) Si substrates has been obtained. Minimum threshold-current densities of 214 A/cm(2) (1900-microm cavity length), maximum slope efficiencies of about 0.8 W/A (600-microm cavity length), and optical power in excess of 270 mW/facet 900-microm cavity length) have been observed under pulsed conditions.
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6514
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Liu SY, Zhang WY, Wang ZS, Wang H. [Effect of cooling or ablation of the culmen of cerebellar vermis on "stepping automatism" in guinea pigs]. SHENG LI XUE BAO : [ACTA PHYSIOLOGICA SINICA] 1987; 39:437-45. [PMID: 3452929] [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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6515
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Robles A, Devor D, Wang H, Warren C. Oral cholecystography and sonography of gallbladder in cholecystectomy patients. West J Med 1987; 147:432-4. [PMID: 3318137 PMCID: PMC1025903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In comparing the diagnostic specificity and sensitivity of oral cholecystography with that of sonography in 479 patients in a community hospital, the oral cholecystogram, when used with a double dose of contrast agent, showed greater specificity (1.00) and sensitivity (0.99) than the sonogram (0.54 and 0.94, respectively). Because of lower cost, the oral cholecystogram should be used as the initial diagnostic study when cholelithiasis is suspected, unless specific contraindications exist.
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6516
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Huang ZG, Shan HY, Huo Y, Wang H. A gold-vapor laser using Ne-H2 as buffer gas. ACTA ACUST UNITED AC 1987. [DOI: 10.1007/bf00693985] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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6517
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Tsai SY, Sagami I, Wang H, Tsai MJ, O'Malley BW. Interactions between a DNA-binding transcription factor (COUP) and a non-DNA binding factor (S300-II). Cell 1987; 50:701-9. [PMID: 3040258 DOI: 10.1016/0092-8674(87)90328-x] [Citation(s) in RCA: 142] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We have identified previously two transcription factors, COUP (chicken ovalbumin upstream promoter) and S300-II, from HeLa cell nuclear extracts. In this paper, the purine base and the phosphate backbone contact sites for the COUP transcription factor were defined. These studies indicate that the COUP box transcription factor interacts with specific base residues in the major groove of the DNA helix. In addition, we have purified the S300-II factor over 100,000-fold. The polypeptide possessing functional transcriptional activity has been identified by SDS-PAGE followed by gel-slice elution and a renaturation assay. It is absolutely required for in vitro function of the ovalbumin promoter. In addition, S300-II stimulates transcription from the MMTV and lysozyme promoters. Kinetic studies probing the interaction of S300-II with COUP factor suggest that it may stabilize COUP-promoter complexes by slowing their rate of dissociation.
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6518
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Yao X, Wang R, Wang H, Song L, Hu Q, Wang J. Crystal and molecular structures of a series of Fe–S cluster complexes (μ- R1S)(μ- R2S)Fe 2(CO) 6. Acta Crystallogr A 1987. [DOI: 10.1107/s0108767387080346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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6519
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Wang H, Rosenbaum AE, Reid CS, Zinreich SJ, Pyeritz RE. Pediatric patients with achondroplasia: CT evaluation of the craniocervical junction. Radiology 1987; 164:515-9. [PMID: 3602395 DOI: 10.1148/radiology.164.2.3602395] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Twenty-six patients (4 months to 6 years old) with achondroplasia complicated by sleep apnea and/or other neurologic manifestations underwent plain computed tomography (CT) of the craniocervical junction; six also underwent CT myelography. For objectification, multiplanar reconstruction was used to complement axial plane measurements by providing coronal and sagittal measurements; multiplanar reconstruction also improved perception of the longitudinal relationships between the brain stem and subarachnoid space. A narrow subarachnoid space was found in all 26 patients; marked cord compression was present in nine, six of whom underwent CT myelography. These six had marked focal obliteration of the subarachnoid space on both plain CT and CT myelography. Since the subarachnoid space immediately above and below the craniocervical junction is normally capacious, when marked constriction was present, no additional information could have been gained from CT myelography. Thus, plain CT was shown to be sufficient for surgical planning (suboccipital decompression) in nine patients with cord compression due to achondroplasia.
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6520
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Dietzschold B, Lafon M, Wang H, Otvos L, Celis E, Wunner WH, Koprowski H. Localization and immunological characterization of antigenic domains of the rabies virus internal N and NS proteins. Virus Res 1987; 8:103-25. [PMID: 2445121 DOI: 10.1016/0168-1702(87)90023-2] [Citation(s) in RCA: 69] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
To locate epitopes on internal antigens of rabies virus, purified N and NS proteins of the nucleocapsid were cleaved at methionine, tryptophan or glutamic acid residues, transferred to nitrocellulose and immunostained using monoclonal antibodies (MAbs) specific for N and NS proteins, respectively. Five MAb-positive fragments of N protein and one fragment of NS protein were located after NH2-terminal amino acid sequence analysis within the deduced amino acid sequences of N and NS proteins. Antigenic analysis of synthetic overlapping peptides corresponding to the amino acid sequences of these fragments localized two major antigenic sites of N protein and one antigenic site of NS protein. Like the N- and NS-specific MAbs, anti-peptide antisera produced against the different synthetic antigens either reacted in a type-common fashion with all rabies virus strains, or in a type-specific manner with a restricted number of strains. The synthetic peptides corresponding to the three antigenic regions of the N and NS proteins also stimulated proliferation of human T lymphocytes derived from vaccinees who received inactivated rabies virus vaccine. This suggested that the antigenic regions of N and NS proteins are recognized by both B and T cells.
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6521
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Wang H, Shah V, Lanks KW. Use of oxidizing dyes in combination with 2-cyanocinnamic acid to enhance hyperthermic cytotoxicity in L929 cells. Cancer Res 1987; 47:3341-3. [PMID: 3581072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Two widely used oxidizing dyes, 2,3,5-triphenyltetrazolium chloride and methylene blue, can greatly potentiate hyperthermic cytotoxicity when administered simultaneously with 2-cyanocinnamic acid. The same compounds are virtually nontoxic to L929 cells if administered alone at 42 degrees C or in combination with 2-cyanocinnamic acid at 37 degrees C. Cytotoxicity was synergistically enhanced by the combined regimens after 3 h of heat exposure. Quercetin, a bioflavonoid known to enhance hyperthermic cytotoxicity, also acts synergistically when administered in combination with 2-cyanocinnamic acid and this effect is apparent after 1 h of heat exposure. Since these compounds do not greatly interfere with pyruvate metabolism at either normal or heat shock temperatures, a mechanism of action based on depletion of NAD(P)H is considered.
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6522
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Merine D, Wang H, Kumar AJ, Zinreich SJ, Rosenbaum AE. CT myelography and MR imaging of acute transverse myelitis. J Comput Assist Tomogr 1987; 11:606-8. [PMID: 3597883 DOI: 10.1097/00004728-198707000-00010] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Two patients with acute transverse myelitis were evaluated by both CT myelography and magnetic resonance. Computed tomographic myelography showed fusiform cord enlargement involving several levels; one patient had a subtotal block in the thoracic spine. Magnetic resonance displayed similar findings of cord enlargement. The demonstration of cord swelling in acute transverse myelitis is an uncommon radiologic manifestation of the disease.
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6523
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Xin JH, Gu MZ, Li HG, Wang H, Zhou JT, Li MT, Li ZP. DNA fragments of Bombyx mori nuclear polyhedrosis virus containing the promoters active in prokaryotes. SCIENTIA SINICA. SERIES B, CHEMICAL, BIOLOGICAL, AGRICULTURAL, MEDICAL & EARTH SCIENCES 1987; 30:591-8. [PMID: 2823381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Using a promoter probe plasmid in E. coli called pHE5, eight different HindIII and one SalI DNA fragments of Bombyx mori nuclear polyhedrosis virus, directing the expression of the tetracycline resistance gene, have been cloned and isolated. The tetracycline resistance levels of the strains containing the recombinant plasmids were measured. Among them, the highest level of the resistance to tetracycline was 30 micrograms/ml. Part of the nucleotide sequence of a DNA fragment was determined. A sequence similar to the E. coli promoter was found.
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6524
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Wang H. [Ontogeny of opiate receptors in the brain of rodents]. SHENG LI KE XUE JIN ZHAN [PROGRESS IN PHYSIOLOGY] 1987; 18:136-40. [PMID: 2821616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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6525
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Reid CS, Pyeritz RE, Kopits SE, Maria BL, Wang H, McPherson RW, Hurko O, Phillips JA, Rosenbaum AE. Cervicomedullary compression in young patients with achondroplasia: value of comprehensive neurologic and respiratory evaluation. J Pediatr 1987; 110:522-30. [PMID: 3559799 DOI: 10.1016/s0022-3476(87)80542-5] [Citation(s) in RCA: 93] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We studied prospectively 26 young patients with achondroplasia to test two hypotheses: that respiratory problems may be the result of occult spinal cord compression, and that achondroplastic patients with cord compression might have occult respiratory abnormalities. Respiratory abnormalities were present in 85%, the majority caused by a primary problem of the pulmonary system, such as small thoracic cage or obstructed airway. Three patients had hypoxemia, recurrent cyanotic spells, and episodes of respiratory distress explainable only by cervicomedullary cord compression; in each patient, respiratory problems were alleviated by decompressive surgery. Another six patients with cervicomedullary compression had, in addition, at least one primary pulmonary cause of respiratory problems. After decompressive surgery the respiratory problems improved in three and were unchanged in three. Reconstructed sagittal CT images proved the most sensitive technique for detecting craniocervical stenosis as a cause of cervicomedullary cord compression, although some degree of stenosis was present in nearly all of the patients.
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