1426
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Xie Y, Zhang J, Petersen M, LaMotte RH. Functional changes in dorsal root ganglion cells after chronic nerve constriction in the rat. J Neurophysiol 1995; 73:1811-20. [PMID: 7623082 DOI: 10.1152/jn.1995.73.5.1811] [Citation(s) in RCA: 150] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
1. We studied the effects of a chronic nerve constriction on the evoked responses in dorsal root fibers in the rat to norepinephrine and to thermal stimuli applied either to the dorsal root ganglion (DRG) or the site of nerve injury. We recorded a total of 59 C fibers, 15 A delta-fibers, and 46 A beta-fibers from the L5 dorsal root of the rats 11-52 days after a loose ligation of the ipsilateral sciatic nerve. Most fibers were identified by the presence of spontaneous activity (SA) that originated partially at and/or proximal to the injury site. In addition, we recorded 20 C fibers, 1 A delta-fiber, and 28 A beta-fibers from the dorsal roots of normal, uninjured neurons. 2. In nerve-injured rats, the SA of some C fibers was generally increased by cooling and decreased by heating either site. In contrast, the SA of most A beta-fibers was increased by heating either the injury site or the DRG. Cooling the DRG decreased SA in A beta-fibers, whereas cooling the injury site typically had no effect. Excitatory responses were not evoked in any fiber group when the same thermal stimuli were applied to the nerve or DRG tested in normal, uninjured rats. 3. Norepinephrine (< 0.5 mM) applied either to the injury site or the DRG increased the SA of most C fibers and A delta-fibers but only a minority of A beta-fibers in previously injured nerves. The threshold concentration for excitation of the DRG somata of C fibers was 0.01 mM. No effects were found for fibers in uninjured nerves. 4. The effect of norepinephrine was blocked by a pretreatment with yohimbine, an alpha 2-blocker, but not with prazosin, an alpha 1-blocker. 5. Stimulation of the sympathetic trunk (L2-L3) excited most C fibers and a minority of A beta-fibers. In contrast, the SA of a minority of C fibers and A beta-fibers was depressed during sympathetic stimulation. 6. After a chronic nerve constriction the DRG becomes a source of abnormal activity modulated by sympathetically released norepinephrine acting on alpha 2 receptors in DRG somata. This neuropathic activity may contribute to cutaneous pain and hyperalgesia.
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1427
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Geng Z, Liu Y, Guo L, Wu L, Chai H, Xie Y. [The effects of 2-chloro-4-bromo-alpha-methylcinnamic acid on the neuromuscular transmission of toad]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1995; 26:41-4. [PMID: 7657336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The effects of 2-chloro-4-bromo-alpha-methylcinnamic acid sodium (SC1001 Na) on neuromuscular transmission were tested by means of intracellular recordings in isolated sciatic nerve-sartorius preparations of toad. The results were: (1) at a concentration of 0.1mmol/L, SC1001 Na had no effect on end-plate potential (EPP); at a concentration of 1 mmol/L, SC1001 Na reduced the amplitude of the EPP significantly, and the paired-pulse facilitation was also decreased; at a concentration of 10mmol/L, SC1001 Na blocked the EPP completely; (2) the 0.1 mmol/L and 1mmol/L groups of drug had no effect on the resting potential of the toad muscle fibers; the resting potential was reduced significantly by SC1001Na at the concentration of 10mmol/L, the action of 10mmol/L drug was irreversible. These results suggest that SC1001 Na may block the neuromuscular transmission of toad, and the blocking effect might be mainly due to a presynaptic mechanism.
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1428
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Xie Y, Zhang G, Liu X, Qiu W, Li W, Li M. [Urinary calcium excretion in patients with pregnant hypertension syndrome]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1995; 26:94-7. [PMID: 7657350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
We observed the urinary calcium in 103 patients in the third trimester of pregnancy and the relation between the 24 hour calcium excretion and the calcium/creatinine ratio of a single void urine sample. The study population included 75 normal pregnant women and 28 pregnant woman with pregnant hypertension syndrome. The 24 hour urinary calcium excretion in the patients with pregnant hypertension syndrome was significantly lower (0.70 +/- 0.36 mmol/L) than that in normal pregnant women (4.00 +/- 1.90 mml/L) P < 0.0005. The 24 hour calcium excretion correlated well with the calcium to creatinine ratio of a single void morning urine sample in the two groups. We conclude that the urinary calcium excretion can be used as an indicator for pregnant hypertension syndrome. The 24 hour urinary calcium excretion can be estimated from a single void urine sample. Pregnant hypertension syndrome is associated with hypocalciuria, probably due to increased tubular reabsorption of calcium.
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1429
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Sai J, Kang L, Huang Z, Shi C, Tian B, Xie Y. Nucleotide sequence of maize dwarf mosaic virus capsid protein gene and its expression in Escherichia coli. SCIENCE IN CHINA. SERIES B, CHEMISTRY, LIFE SCIENCES & EARTH SCIENCES 1995; 38:313-9. [PMID: 7766313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The 3'-terminal 1,279 nucleotide sequence of maize dwarf mosaic virus (MDMV) genome has been determined. This sequence contains an open reading frame of 1,023 nucleotides and a 3'-non-coding region of 256 nucleotides. The open reading frame includes all of the coding regions for the viral capsid protein (CP) and part of the viral nuclear inclusion protein (NIb). The predicted viral CP consists of 313 amino acid residues with a calculated molecular weight of 35,400. The amino acid sequence of the viral CP derived from MDMV cDNA shows about 47%-54% homology to that of 4 other potyviruses. The viral CP gene was constructed in frame with the lacZ gene in pUC19 plasmid and expressed in E. coli cells. The fusion polypeptide positively reacted in Western blot with an antiserum prepared against the native viral CP.
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1430
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Liu WK, Tsui KW, Lai KW, Xie Y. Sister-chromatid exchanges in lymphocytes from methimazole-induced hypothyroid mice. Mutat Res 1995; 326:193-7. [PMID: 7529884 DOI: 10.1016/0027-5107(94)00166-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The inhibitory effect of an antithyroid drug on mouse T lymphocytes was investigated. Inbred C57BL/6 mice were provided with an antithyroid drug, methimazole, for 2, 4 and 6 weeks and the in vitro responses of the lymphocytes were studied. The proliferative responses of T lymphocytes from the spleen of methimazole (MMI)-treated mice significantly (p < 0.05) decreased following concanavalin A stimulation, and the inhibitory effect became prominent with the increased duration of MMI treatment. A concomitant increase in the frequency of induced sister-chromatid exchanges was also observed in these T lymphocytes. When the splenocytes were stimulated with concanavalin A for 24 h, their ability to produce interleukin-2 (IL-2) was significantly decreased (p < 0.05). The results indicated that methimazole interfered with the normal proliferation of T lymphocytes by suppressing the production of IL-2, a cytokine also known as T cell growth factor, as well as inducing a higher incidence of sister-chromatid exchange during cell division.
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1431
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Li Q, Li Y, Xie Y, Ren D. [Expression of chemically synthesized hybrid genes of Plasmodium falciparum and preliminary characterization of expressed products]. ZHONGGUO JI SHENG CHONG XUE YU JI SHENG CHONG BING ZA ZHI = CHINESE JOURNAL OF PARASITOLOGY & PARASITIC DISEASES 1995; 13:94-98. [PMID: 7554171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The chemically synthesized hybrid genes HGFC and HGFCAC were respectively recombinated with expression vector pWR450-1 and transferred into Escherichia coli. After adding IPTG to the cultural media, the bacteria harboring recombinant plasmid expressed the fusion proteins of exogenous gene products and partial amino acid of beta-galactosidase. The molecular weights of the two fusion proteins were 65 kDa and 77 kDa, respectively. The expressed fusion proteins could be recognized by antibodies of rabbit anti-RESA peptide EENVEHDA by Western blotting, indicating that the fusion proteins harbored the antigenic epitopes of Plasmodium falciparum.
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1432
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Hopke PK, Barrie LA, Li SM, Cheng MD, Li C, Xie Y. Possible sources and preferred pathways for biogenic and non-sea-salt sulfur for the high Arctic. ACTA ACUST UNITED AC 1995. [DOI: 10.1029/95jd01712] [Citation(s) in RCA: 91] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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1433
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Tomomasa T, Xie Y, Morikawa A, Kuroume T, Hyman PE. Postnatal changes in size and actomyosin content of rabbit gastric myocytes. Reprod Fertil Dev 1995; 7:1305-10. [PMID: 8848604 DOI: 10.1071/rd9951305] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Maximal tension generated by gastric muscle is three to four times greater in weanlings than in newborn rabbits. To determine if this functional maturation is accompanied by structural changes, we compared length-tension relationships, myocyte number and size, and actomyosin content in muscle from the gastric body of newborn (1 day) and weanling (12 weeks) rabbits. Passive tension at optimal length (Lo) was six times greater in circular smooth muscle strips from weanling rabbits than from newborn rabbits. Active tension at Lo in weanling rabbits was three times greater than in newborn rabbits. For morphometry, muscle cross-sections stretched to Lo in the circular axis were photographed with electron microscopy (5300x). Cell number/unit area was counted in circular muscle layers from newborns and weanlings. Cross-sectional area of each cell was measured by computerized planimetry. There were 2.5 times more cells per unit area in newborn than in weanling tissue, P < 0.001. However, the mean cell area in newborns (5.4 +/- 4.6 microns2) was less than that in weanlings (13.5 +/- 11.7 microns2). Consequently, the muscle cells occupied similar total areas in newborns and weanlings. We measured actin and myosin heavy chain in full-thickness muscle homogenates using SDS gel electrophoresis and densitometric scanning. Actin and myosin concentrations were lower in newborns (9.6 +/- 1.3 micrograms g-1 wet weight and 5.6 +/- 0.7 micrograms g-1 wet wt, respectively) than in weanlings (17.7 +/- 3.0 micrograms g-1 wet wt and 8.2 +/- 1.6 micrograms g-1 wet wt respectively), each P < 0.01. The proportion of myosin heavy chain isozymes did not change with age. We conclude that there are postnatal increases in cell size and the quantity of actin and myosin in rabbit gastric muscle. The increase in quantity of contractile protein may be in part responsible for age-dependent increases in maximal tension.
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1434
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Buskulic D, Casper D, Bonis I, Decamp D, Chez P, Goy C, Lees JP, Minard MN, Odier P, Pietrzyk B, Ariztizabal F, Comas P, Crespo JM, Efthymiopoulos I, Fernandez E, Fernandez-Bosman M, Gaitan V, Garrido L, Martinez M, Mattison T, Orten S, Pacheco A, Padilla C, Pascual A, Creanza D, Palma M, Farilla A, Iaselli G, Maggi G, Marinelli N, Natali S, Nuzzo S, Ranieri A, Raso G, Romano F, Ruggieri F, Selvaggi G, Silvestris L, Tempesta P, Zito G, Chai Y, Huang D, Huang X, Lin J, Wang T, Xie Y, Xu D, Xu R, Zhang J, Zhang L, Zhao W, Blucher E, Bonvicini G, Boudreau J, Drevermann H, Forty RW, Ganis G, Gay C, Girone M, Hagelberg R, Harvey J, Hilgart J, Jacobsen R, Jost B, Knobloch J, Lehraus I, Maggi M, Markou C, Mato P, Meinhard H, Minten A, Miquel R, Moffeit K, Palazzi P, Pater JR, Perlas JA, Perrodo P, Pusztaszeri JF, Ranjard F, Rolandi L, Rothberg J, Ruan T, Saich M, Schlatter D, Schmelling M, Sefkow F, Tejessy W, Tomalin IR, Veenhof R, Wachsmuth H, Wasserbaech S, Wiedenmann W, Wildish T, Witzeling W, Wotschack J, Ajaltouni Z, Bardadin-Otwinowska M, Barres A, Boyer C, Falvard A, Gay P, Guicheney C, Henrard P, Jousset J, Michel B, Montret JC, Pallin D, Perret P, Podlyski F, Proriol J, Saadi F, Fearnley T, Hansen JB, Hansen JD, Hansen JR, Hansen PH, Johnson SD, Møllerud R, Nilsson BS, Kyriakis A, Simopoulou E, Siotis I, Vayaki A, Zachariadou K, Badier J, Blondel A, Bonneaud G, Brient JC, Bourdon P, Fouque G, Passalacqua L, Rougé A, Rumpf M, Tanaka R, Verderi M, Videau H, Candlin DJ, Parsons MI, Veitch E, Focardi E, Moneta L, Parrini G, Corden M, Delfino M, Georgiopoulos C, Jaffe DE, Levinthal D, Antonelli A, Bencivenni G, Bologna G, Bossi F, Campana P, Capon G, Cerutti F, Chiarella V, Felici G, Laurelli P, Mannocchi G, Murtas F, Murtas GP, Pepe-Altarelli M, Salomone S, Colrain P, Have I, Knowles IG, Lynch JG, Maitland W, Morton WT, Raine C, Reeves P, Scarr JM, Smith K, Smith MG, Thompson AS, Thorn S, Turnbull RM, Becker U, Braun O, Geweniger C, Hanke P, Hepp V, Kluge EE, Putzer A, Rensch B, Schmidt M, Stenzel H, Tittel K, Wunsch M, Beuselinck R, Binnie DM, Cameron W, Cattaneo M, Colling DJ, Dornan PJ, Hassard JF, Konstantinidis N, Moutoussi A, Nash J, Payne DG, San Martin G, Sedgbeer JK, Wright AG, Girtler P, Kuhn D, Rudolph G, Vogl R, Bowdery CK, Brodbeck TJ, Finch AJ, Foster F, Hughes G, Jackson D, Keemer NR, Nuttall M, Patel A, Sloan T, Snow SW, Whelan EP, Galla A, Greene AM, Kleinknecht K, Raab J, Renk B, Sander HG, Schmidt H, Walther SM, Wanke R, Wolf B, Bencheikh AM, Benchouk C, Bonissent A, Calvet D, Carr J, Coyle P, Diaconu C, Etienne F, Nicod D, Payre P, Roos L, Rousseau D, Schwemling P, Talby M, Adlung S, Assmann R, Bauer C, Blum W, Brown D, Cattaneo P, Dehning B, Dietl H, Dydak F, Frank M, Halley AW, Jakobs K, Lauber J, Lütjens G, Lutz G, Männer W, Moser HG, Richter R, Schröder J, Schwarz AS, Settles R, Seywerd H, Stierlin U, Stiegler U, Denis RS, Wolf G, Alemany R, Boucrot J, Callot O, Cordier A, Davier M, Duflot L, Grivaz JF, Heusse P, Janot P, Kim DW, Diberder F, Lefrançois J, Lutz AM, Musolino G, Schune MH, Veillet JJ, Videau I, Abbaneo D, Bagliesi G, Batignani G, Bottigli U, Bozzi C, Calderini G, Carpinelli M, Ciocci MA, Ciulli V, Dell'Orso R, Ferrante I, Fidecaro F, Foa L, Forti F, Giassi A, Giorgi MA, Gregorio A, Ligabue F, Lusiani A, Marrocchesi PS, Martin EB, Messineo A, Palla F, Rizzo G, Sanguinetti G, Spagnolo P, Steinberger J, Tenchini R, Tonelli G, Triggiani G, Valassi A, Vannini C, Venturi A, Verdini PG, Walsh J, Betteridge AP, Green MG, Johnson DL, March PV, Medcalf T, Mir LM, Quazi IS, Strong JA, Bertin V, Botterill DR, Clifft RW, Edgecock TR, Haywood S, Edwards M, Norton PR, Thompson JC, Bloch-Devaux B, Colas P, Duarte H, Emery S, Kozanecki W, Lançon E, Lemaire MC, Locci E, Marx B, Perez P, Rander J, Renardy JF, Rosowsky A, Roussarie A, Schuller JP, Schwindling J, Mohand D, Vallage B, Johnson RP, Litke AM, Taylor G, Wear J, Babbage W, Beddall E, Booth CN, Cartwright S, Combley F, Dawson I, Rankin C, Thompson LF, Böhrer A, Brandt S, Cowan G, Feigl E, Grupen C, Lutters G, Minguet-Rodriguez J, Rivera F, Saraiva P, Schäfer U, Smolik L, Bosisio L, Della Marina R, Giannini G, Gobbo B, Pitis L, Ragusa F, Bellantoni L, Chen W, Conway JS, Feng Z, Ferguson DPS, Gao YS, Grahl J, Harton JL, Hayes OJ, Hu H, Nachtman JM, Pan YB, Saadi Y, Schmitt M, Scott I, Sharma V, Turk JD, Walsh AM, Weber FV, Wu SL, Wu X, Zheng M, Yamartino JM, Zobernig G. Z production cross sections and lepton pair forward-backward asymmetries. ACTA ACUST UNITED AC 1994. [DOI: 10.1007/bf01574159] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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1435
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Xie Y, Wan B, Li W. [Effect of bee pollen on maternal nutrition and fetal growth]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1994; 25:434-7. [PMID: 7744390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Plant pollen collected by the honeybee is called bee pollen, which is a natural nutrient. We studied the effects of the bee pollen of Brassia campestres L. on maternal nutrition and fetal growth. Pregnant Sprague-Dawley rats at O-d were divided randomly into three groups. The control group (C) was fed with a diet. The other two groups (A) and (B) were fed with the diet plus bee pollen 20 g/kg.d-1 and 10 g/kg.d-1, respectively. All the dams in each group took a diet and drank water and libitm. Pollen-fed dams in both groups (A) and (B) had greater body weight and higher levels of haemoglobin, total protein, serum iron and albumin (P < 0.01, P < 0.05). Fetuses of pollen-fed dams had greater body weight (P < 0.01) and lower death rate (P < 0.005). No gross external, visceral and skeletal malformations were observed in the fetuses. These results suggested that bee pollen could improve maternal nutrition without affecting normal fetal development. It is a practical and effective nutrient during pregnancy.
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1436
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Bookstein C, Musch MW, DePaoli A, Xie Y, Villereal M, Rao MC, Chang EB. A unique sodium-hydrogen exchange isoform (NHE-4) of the inner medulla of the rat kidney is induced by hyperosmolarity. J Biol Chem 1994; 269:29704-9. [PMID: 7961960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Membrane sodium-hydrogen exchangers (NHEs), found in virtually all cell types, appear to have diverse and essential roles in regulating cellular pH and mediating vectorial transport by epithelial cells. However, the functional and physiological role of the recently cloned isoform NHE-4 remains unknown. Unlike other Na-H exchanger isoforms, NHE-4 transfected into NHE-deficient mutant fibroblasts demonstrated no amiloride-inhibitable sodium uptake, under basal or acid-loaded isoosmotic conditions. By immunoblot analysis, only the NHE-4 transfectants synthesized a 100-kDa protein, which cross-reacted to polyclonal antibody made to an NHE-4 fusion protein. However, when cells were subjected to acute hyperosmolar cell shrinkage conditions, amiloride-sensitive NHE activity was readily detected at 420 mosm, exhibiting maximal activity at 490 mosm. By in situ hybridization, NHE-4 expression in the rat kidney was found to be limited to the inner renal medullary collecting tubules, the region of highest tissue osmolarity fluctuations in the body. We conclude that NHE-4 is an unusual isoform of sodium-hydrogen exchangers that may play a specialized supplementary role in cell volume regulation.
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1437
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Bookstein C, Musch MW, DePaoli A, Xie Y, Villereal M, Rao MC, Chang EB. A unique sodium-hydrogen exchange isoform (NHE-4) of the inner medulla of the rat kidney is induced by hyperosmolarity. J Biol Chem 1994. [DOI: 10.1016/s0021-9258(18)43937-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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1438
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Xie Y, Rao BF. [Clinical significance of immunohistochemistry and ultrastructural change of myocardium in viral myocarditis]. ZHONGHUA NEI KE ZA ZHI 1994; 33:675-7. [PMID: 7712915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Endomyocardial biopsy (EMB) specimens from 56 patients with suspected viral myocarditis (VMT) were studied. With microscopical study of the EMB specimens stained with HE, 14 of the 56 cases were diagnosed as myocarditis (25%) and 24 as non-myocarditis (43%). But immunohistochemistry stain showed that the contents of myosin, actin and myoglobin reduced in 51 patients (91%). Ten of 56 specimens were observed under electron microscope (EM). EM examination revealed focal or diffuse lysis of myofibrils in 10 patients. The results showed that: (1) The myofibrils in VMT showed severe damage. (2) Immunohistochemistry and EM examination can be used as a supplement to the Dallas diagnosis standard in order to improve accuracy of EMB in diagnosing VMT.
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1439
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Xie Y, Hopke PK, Wienke D. Airborne particle classification with a combination of chemical composition and shape index utilizing an adaptive resonance artificial neural network. ENVIRONMENTAL SCIENCE & TECHNOLOGY 1994; 28:1921-8. [PMID: 22175934 DOI: 10.1021/es00060a024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
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1440
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Xie Y, Hung MC. Nuclear localization of p185neu tyrosine kinase and its association with transcriptional transactivation. Biochem Biophys Res Commun 1994; 203:1589-98. [PMID: 7945309 DOI: 10.1006/bbrc.1994.2368] [Citation(s) in RCA: 93] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The rat neu protooncogene encodes a 185 kD transmembrane protein (p185neu), which is a member of the epidermal growth factor receptor (EGFr) family. In searching for the signaling transducer of p185neu by using a two-hybrid selection system, we found, surprisingly, that the cytoplasmic domain of p185neu, when fused to the DNA-binding domain of GAL4 (amino acids 1-147), functioned as a transcriptional activator. We subsequently observed nuclear localization of p185neu. Interestingly, nuclear p185neu has a much higher extent of tyrosine phosphorylation than its nonnuclear counterpart. Our results suggest that a transmembrane receptor tyrosine kinase may enter the nucleus and be involved in transcriptional activation. This novel finding unveils a clue in the understanding of the mechanism of receptor tyrosine kinase-mediated signal transduction.
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1441
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Cho JH, Musch MW, DePaoli AM, Bookstein CM, Xie Y, Burant CF, Rao MC, Chang EB. Glucocorticoids regulate Na+/H+ exchange expression and activity in region- and tissue-specific manner. THE AMERICAN JOURNAL OF PHYSIOLOGY 1994; 267:C796-803. [PMID: 7943208 DOI: 10.1152/ajpcell.1994.267.3.c796] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Na+/H+ exchangers (NHEs) are integral membrane proteins that exchange Na+ for H+ across membranes. Four isoforms have been cloned (NHE-1-4). NHE-3 localizes to the apical domain, and its expression is increased in dexamethasone-treated rats by Northern analysis. This stimulatory effect on expression is region and tissue specific, being present in ileum and proximal colon, but not in jejunum, distal colon, or kidney. The increase in transcript expression in ileum correlates with an increase in protein expression by immunoblotting. Changes in apical Na+/H+ exchange activity, as measured by 22Na uptake into brush-border membrane vesicles, correlate with expression differences, with significant increases observed in ileum and proximal colon. In situ hybridization showed NHE-3 mRNA only in villus and absorptive cells of control rats, the pattern not being altered by dexamethasone treatment. This suggests that dexamethasone does not increase expression by inducing crypt cells to express NHE-3 prematurely. We conclude that glucocorticoids selectively increase intestinal NHE-3 activity in a region-specific manner and that this effect also appears to be tissue specific.
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Buskulic D, Casper D, Bonis I, Decamp D, Ghez P, Goy C, Lees JP, Minard MN, Odier P, Pietrzyk B, Ariztizabal F, Chmeissani M, Crespo JM, Efthymiopoulos I, Fernandez E, Fernandez-Bosman M, Gaitan V, Garrido L, Martinez M, Mattison T, Orteu S, Pacheco A, Padilla C, Palla F, Pascual A, Perlas JA, Teubert F, Creanza D, Palma M, Farilla A, Iaselli G, Maggi G, Marinelli N, Natali S, Nuzzo S, Ranieri A, Raso G, Romano F, Ruggieri F, Selvaggi G, Silvestris L, Tempesta P, Zito G, Chai Y, Huang D, Huang X, Lin J, Wang T, Xie Y, Xu D, Xu R, Zhang J, Zhang L, Zhao W, Bonvicini G, Boudreau J, Comas P, Coyle P, Drevermann H, Engelhardt A, Forty RW, Ganis G, Gay C, Girone M, Hagelberg R, Harvey J, Jacobsen R, Jost B, Knobloch J, Lehraus I, Maggi M, Markou C, Mato P, Meinhard H, Minten A, Miquel R, Palazzi P, Pater JR, Perrodo P, Pusztaszeri JF, Ranjard F, Rolandi L, Rothberg J, Saich M, Schlatter D, Schmelling M, Tejessy W, Tomalin IR, Veenhof R, Venturi A, Wachsmuth H, Wasserbaech S, Wiedenmann W, Wildish T, Witzeling W, Wotschack J, Ajaltouni Z, Bardadin-Otwinowska M, Barres A, Boyer C, Falvard A, Gay P, Guicheney C, Henrard P, Jousset J, Michel B, Montret JC, Pallin D, Perret P, Podlyski F, Proriol J, Saadi F, Fearnley T, Hansen JB, Hansen JD, Hansen JR, Hansen PH, Johnson SD, Møllerud R, Nilsson BS, Kyriakis A, Simopoulou E, Siotis I, Vayaki A, Zachariadou K, Blondel A, Bonneaud G, Brient JC, Bourdon P, Passalacqua L, Rougé A, Rumpf M, Tanaka R, Valassi A, Verderi M, Videau H, Candlin DJ, Parsons MI, Veitch E, Focardi E, Parrini G, Corden M, Delfino M, Georgiopoulos C, Jaffe DE, Levinthal D, Antonelli A, Bencivenni G, Bologna G, Bossi F, Campana P, Capon G, Cerutti F, Chiarella V, Felici G, Laurelli P, Mannocchi G, Murtas F, Murtas GP, Pepe-Altarelli M, Salomone S, Colrain P, Have I, Knowles IG, Lynch JG, Maitland W, Morton WT, Raine C, Reeves P, Scarr JM, Smith K, Smith MG, Thompson AS, Thorn S, Turnbull RM, Becker U, Braun O, Geweniger C, Hanke P, Hepp V, Kluge EE, Putzer A, Rensch B, Schmidt M, Stenzel H, Tittel K, Wunsch M, Beuselinck R, Binnie DM, Cameron W, Cattaneo M, Colling DJ, Dornan PJ, Hassard JF, Konstantinidis N, Moneta L, Moutoussi A, Nash J, Payne DG, Martin GS, Sedgbeer JK, Wright AG, Girtler P, Kuhn D, Rudolph G, Vogl R, Bowdery CK, Brodbeck TJ, Finch AJ, Foster F, Hughes G, Jackson D, Keemer NR, Nuttall M, Patel A, Sloan T, Snow SW, Whelan EP, Galla A, Greene AM, Kleinknecht K, Raab J, Renk B, Sander HG, Schmidt H, Walther SM, Wanke R, Wolf B, Bencheikh AM, Benchouk C, Bonissent A, Calvet D, Carr J, Diaconu C, Etienne F, Nicod D, Payre P, Roos L, Rousseau D, Schwemling P, Talby M, Adlung S, Assmann R, Bauer C, Blum W, Brown D, Cattaneo P, Dehning B, Dietl H, Dydak F, Frank M, Halley AW, Jakobs K, Kroha H, Lauber J, Lütjens G, Lutz G, Männer W, Moser HG, Richter R, Schael S, Schröder J, Schwarz AS, Settles R, Seywerd H, Stierlin U, Stiegler U, Denis RS, Wolf G, Alemany R, Boucrot J, Callot O, Cordier A, Courault F, Davier M, Duflot L, Grivaz JF, Heusse P, Janot P, Jacquet M, Kim DW, Diberder F, Lefrançois J, Lutz AM, Musolino G, Nikolic I, Park HJ, Park IC, Simion S, Schune MH, Veillet JJ, Videau I, Abbaneo D, Bagliesi G, Batignani G, Bottigli U, Bozzi C, Calderini G, Carpinelli M, Ciocci MA, Ciulli V, Dell'Orso R, Ferrante I, Fidecaro F, Foà L, Forti F, Giassi A, Giorgi MA, Gregorio A, Ligabue F, Lusiani A, Marrocchesi PS, Martin EB, Messineo A, Rizzo G, Sanguinetti G, Spagnolo P, Steinberger J, Tenchini R, Tonelli G, Triggiani G, Vannini C, Verdini PG, Walsh J, Betteridge AP, Gao Y, Green MG, Johnson DL, March PV, Medcalf T, Mir LM, Quazi IS, Strong JA, Bertin V, Botterill DR, Clifft RW, Edgecock TR, Haywood S, Edwards M, Norton PR, Thompson JC, Bloch-Devaux B, Colas P, Duarte H, Emery S, Kozanecki W, Lançon E, Lemaire MC, Locci E, Marx B, Perez P, Rander J, Renardy JF, Rosowsky A, Roussarie A, Schuller JP, Schwindling J, Mohand D, Vallage B, Johnson RP, Litke AM, Taylor G, Wear J, Beddall A, Booth CN, Cartwright S, Combley F, Dawson I, Koksal A, Rankin C, Thompson LF, Böhrer A, Brandt S, Cowan G, Feigl E, Grupen C, Lutters G, Minguet-Rodriguez J, Rivera F, Saraiva P, Schäfer U, Smolik L, Bosisio L, Marina R, Giannini G, Gobbo B, Pitis L, Ragusa F, Bellantoni L, Conway JS, Feng Z, Ferguson DPS, Gao YS, Grahl J, Harton JL, Hayes OJ, Hu H, Nachtman JM, Pan YB, Saadi Y, Schmitt M, Scott I, Sharma V, Turk JD, Walsh AM, Weber FV, Wu SL, Wu X, Yamartino JM, Zheng M, Zobernig G. Production ofK 0 and Λ in hadronic Z decays. ACTA ACUST UNITED AC 1994. [DOI: 10.1007/bf01560096] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Rana B, Mischoulon D, Xie Y, Bucher NL, Farmer SR. Cell-extracellular matrix interactions can regulate the switch between growth and differentiation in rat hepatocytes: reciprocal expression of C/EBP alpha and immediate-early growth response transcription factors. Mol Cell Biol 1994; 14:5858-69. [PMID: 8065319 PMCID: PMC359112 DOI: 10.1128/mcb.14.9.5858-5869.1994] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Previous investigations have shown that culture of freshly isolated hepatocytes under conventional conditions, i.e., on dried rat tail collagen in the presence of growth factors, facilitates cell growth but also causes an extensive down-regulation of most liver-specific functions. This dedifferentiation process can be prevented if the cells are cultured on a reconstituted basement membrane gel matrix derived from the Englebreth-Holm-Swarm mouse sarcoma tumor (EHS gel). To gain insight into the mechanisms regulating this response to extracellular matrix, we are analyzing the activities of two families of transcription factors, C/EBP and AP-1, which control the transcription of hepatic and growth-responsive genes, respectively. We demonstrate that isolation of hepatocytes from the normal quiescent rat liver by collagenase perfusion activates the immediate-early growth response program, as indicated by increased expression of c-jun, junB, c-fos, and c-myc mRNAs. Adhesion of these activated cells to dried rat tail collagen augments the elevated levels of these mRNAs for the initial 1 to 2 h postplating; junB and c-myc mRNA levels then drop steeply, with junB returning to normal quiescence and the c-myc level remaining slightly elevated during the 3-day culture period. Levels of c-jun mRNA and AP-1 DNA binding activity, however, remain elevated from the outset, while C/EBP alpha mRNA expression is down-regulated, resulting in a decrease in the steady-state levels of the 42- and 30-kDa C/EBP alpha polypeptides and C/EBP alpha DNA binding activity. In contrast, C/EBP beta mRNA production remains at near-normal hepatic levels for 5 to 8 days of culture, although its DNA binding activity decreases severalfold during this time. Adhesion of hepatocytes to the EHS gel for the same period of time dramatically alters this program: it arrests growth and inhibits AP-1 DNA binding activity and the expression of c-jun, junB, and c-myc mRNAs, but, in addition, it restores C/EBP alpha mRNA and protein as well as C/EBP alpha and C/EBP beta DNA binding activities to the abundant levels present in freshly isolated hepatocytes. These changes are not due merely to growth inhibition, because suppression of hepatocyte proliferation on collagen by epidermal growth factor starvation or addition of transforming growth factor beta does not inhibit AP-1 activity or restore C/EBP alpha DNA binding activity to normal hepatic levels. These data suggest that expression of the normal hepatic phenotype requires that hepatocytes exist in a G0 state of growth arrest, facilitated here by adhesion of cells to the EHS gel, in order to express high levels of hepatic transcription factors such as C/EBP alpha.
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Xie Y, Hu XD. [Clinical features and prognosis of paroxysmal atrial fibrillation in the elderly]. ZHONGHUA NEI KE ZA ZHI 1994; 33:516-8. [PMID: 7882739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Eighty one elderly patients with paroxysmal atrial fibrillation were studied with respect to clinical features, effect of antiarrhythmic drugs and prognosis. 35 (43.2%) patients were associated with coronary artery disease and/or hypertension, while 23 (28.4%) patients had no other cardiovascular diseases. The latter condition was significantly less in patients over 60 years old when they had the first paroxysmal attack. Atrial fibrillation became permanent in 18 (22.2%) patients. Left atrial enlargement and abnormal cardiac function were significant independent factors affecting the type of atrial fibrillation. During an observation period of 12-84 months, the incidence of cerebral embolism and cardiac death were 6.1% and 4.9% respectively in all cases. We did not find that the prognosis of patients was affected by the types of atrial fibrillation.
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Xie Y, Dengler K, Zacharias E, Wilffert B, Tegtmeier F. Effects of the sodium channel blocker tetrodotoxin (TTX) on cellular ion homeostasis in rat brain subjected to complete ischemia. Brain Res 1994; 652:216-24. [PMID: 7953733 DOI: 10.1016/0006-8993(94)90230-5] [Citation(s) in RCA: 79] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Anoxic depolarization (AD) and failure of the cellular ion homeostasis are suggested to play a key role in ischemia-induced neuronal death. Recent studies show that the blockade of Na+ influx significantly improved the neuronal outcome. In the present study, we investigated the effects of 10 microM tetrodotoxin (TTX) on ischemia-induced disturbances of ion homeostasis in the isolated perfused rat brain. TTX inhibited the spontaneous EEG activity, delayed the ischemia-induced tissue acidification, and significantly postponed the occurrence of AD by 65%. The [Ca2+]e elevation prior to AD was attenuated from 17.8% to 6% while the increase of the [Na+]e in this period was enhanced (from 2.9% to 7.3%). These findings implied that the ischemia-induced early cellular sodium load and the corresponding shrinkage of the extracellular space was counteracted by TTX. Our results suggest that the Na+ influx via voltage-dependent channels preceding complete breakdown of ion homeostasis is one major factor leading to cell depolarization. The massive Na+ influx coinciding with AD, however, may be mainly via non-selective cation channels or/and receptor-operated channels. Persistent Na+ influx deteriorates neuronal tissue integrity by favouring Ca2+ influx and edema formation. Blockade of ischemia-induced excessive Na+ influx is, therefore, a promising pharmacological approach for stroke treatment.
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Xie Y, Reckhow DA. Formation of halogenated artifacts in brominated, chloraminated, and chlorinated solvents. ENVIRONMENTAL SCIENCE & TECHNOLOGY 1994; 28:1357-1360. [PMID: 22176330 DOI: 10.1021/es00056a026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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1447
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Buskulic D, Casper D, Bonis I, Decamp D, Ghez P, Goy C, Lees JP, Minard MN, Odier P, Pietrzyk B, Ariztizabal F, Comas P, Crespo JM, Efthymiopoulos I, Fernandez E, Fernandez-Bosman M, Gaitan V, Garrido L, Martinez M, Mattison T, Ortreu S, Pacheco A, Padilla C, Pascual A, Creanza D, Palma M, Farilla A, Iaselli G, Maggi G, Marinelli N, Natali S, Nuzzo S, Ranieri A, Raso G, Romano F, Ruggieri F, Selvaggi G, Silvestris L, Tempesta P, Zito G, Chai Y, Huang D, Huang X, Lin J, Wang T, Xie Y, Xu D, Xu R, Zhang J, Zhang L, Zhao W, Bonvicini G, Boudreau J, Drevermann H, Forty RW, Ganis G, Gay C, Girone M, Hagelberg R, Harvey J, Hilgart J, Jacobsen R, Jost B, Knobloch J, Lehraus I, Maggi M, Markou C, Mato P, Meinhard H, Minten A, Miquel R, Palazzi P, Pater JR, Perlas JA, Perrodo P, Pusztaszeri JF, Ranjard F, Rolandi L, Rothberg J, Ruan T, Saich M, Schlatter D, Schmelling M, Sefkow F, Tejessy W, Tomalin IR, Veenhof R, Wachsmuth H, Wasserbaech S, Wiedenmann W, Wildish T, Witzeling W, Wotschack J, Ajaltouni Z, Bardadin-Otwinowska M, Barres A, Boyer C, Falvard A, Gay P, Guicheney C, Henrard P, Jousset J, Michel B, Montret JC, Pallin D, Perret P, Podlyski F, Proriol J, Saadi F, Fearnley T, Hansen JB, Hansen JD, Hansen JR, Hansen PH, Johnson SD, Møllerud R, Nilsson BS, Kyriakis A, Simopoulou E, Siotis I, Vayaki A, Zachariadou K, Badier J, Blondel A, Bonneaud G, Brient JC, Bourdon B, Fouque G, Passalacqua L, Rougé A, Rumpf M, Tanaka R, Verderi M, Videau H, Candlin DJ, Parsons MI, Veitch E, Focardi E, Moneta L, Parrini G, Corden M, Delfino M, Georgiopoulos C, Jaffe DE, Levinthal D, Antonelli A, Bencivenni G, Bologna G, Bossi F, Campana P, Capon G, Cerutti F, Chiarella V, Felici G, Laurelli P, Mannocchi G, Murtas F, Murtas GP, Pepe-Altarelli M, Salomone S, Colrain P, Have I, Knowles IG, Lynch JG, Maitland W, Morton WT, Raine C, Reeves P, Scarr JM, Smith K, Smith MG, Thompson AS, Thorn S, Turnbull RM, Becker U, Braun O, Geweniger C, Hanke P, Hepp V, Kluge EE, Putzer A, Rensch B, Schmidt M, Stenzel H, Tittel K, Wunsch M, Beuselinck R, Binnie DM, Cameron W, Cattaneo M, Colling DJ, Dornan PJ, Hassard JF, Konstantinidis N, Moutoussi A, Nash J, Payne DG, Martin G, Sedgbeer JK, Wright AG, Girtler P, Kuhn D, Rudolph G, Vogl R, Bowdery CK, Brodbeck TJ, Finch AJ, Foster F, Hughes G, Jackson D, Keemer NR, Nuttall M, Patel A, Sloan T, Snow SW, Whelan EP, Galla A, Greene AM, Kleinknecht K, Raab J, Renk B, Sander HG, Schmidt H, Walther SM, Wanke R, Wolf B, Bencheikh AM, Benchouk C, Bonissent A, Calvet D, Carr J, Coyle P, Diaconu C, Etienne F, Nicod D, Payre P, Roos L, Rousseau D, Schwemling P, Talby M, Adlung S, Assmann R, Bauer C, Blum W, Brown D, Cattaneo P, Dehning B, Dietl H, Dydak F, Frank M, Halley AW, Jakobs K, Lauber J, Lütjens G, Lutz G, Männer W, Moser HG, Richter R, Schröder J, Schwarz AS, Settles R, Seywerd H, Stierlin U, Stiegler U, Denis RS, Wolf G, Alemany R, Boucrot J, Callot O, Cordier A, Davier M, Duflot L, Grivaz JF, Heusse P, Janot P, Kim DW, Diberder F, Lefrançois J, Lutz AM, Musolino G, Schune MH, Veillet JJ, Videau I, Abbaneo D, Bagliesi G, Batignani G, Bottigli U, Bozzi C, Calderini G, Carpinelli M, Ciocci MA, Ciulli V, Dell'Orso R, Ferrante I, Fidecaro F, Foa L, Forti F, Giassi A, Giorgi MA, Gregorio A, Ligabue F, Lusiani A, Marrocchesi PS, Martin EB, Messineo A, Palla F, Rizzo G, Sanguinetti G, Spagnolo P, Steinberger J, Tenchini R, Tonelli G, Triggiani G, Valassi A, Vannini C, Venturi A, Verdini PG, Walsh J, Betteridge AP, Gao Y, Green MG, Johnson DL, March PV, Medcalf T, Mir LM, Quazi IS, Strong JA, Bertin V, Botterill DR, Clifft RW, Edgecock TR, Haywood S, Edwards M, Norton PR, Thompson JC, Bloch-Devaux B, Colas P, Duarte H, Emery S, Kozanecki W, Lançon E, Lemaire MC, Locci E, Marx B, Perez P, Rander J, Renardy JF, Rosowsky A, Roussarie A, Schuller JP, Schwindling J, Mohand D, Vallage B, Johnson RP, Litke AM, Taylor G, Wear J, Babbage W, Booth CN, Buttar C, Cartwright S, Combley F, Dawson I, Thompson LF, Böhrer A, Brandt S, Cowan G, Feigl E, Grupen C, Lutters G, Minguet-Rodriguez J, Rivera F, Saraiva P, Schäfer U, Smolik L, Bosisio L, Marina RD, Giannini G, Gobbo B, Pitis L, Ragusa F, Bellantoni L, Chen W, Conway JS, Feng Z, Ferguson DPS, Gao YS, Grahl J, Harton JL, Hayes OJ, Hu H, Nachtman JM, Pan YB, Saadi Y, Schmitt M, Scott I, Sharma V, Turk JD, Walsh AM, Weber FV, Wu SL, Wu X, Yamartino JM, Zheng M, Zobernig G. Heavy flavour production and decay with prompt leptons in the ALEPH detector. ACTA ACUST UNITED AC 1994. [DOI: 10.1007/bf01560237] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Chen Q, Chai H, Xie Y. [Study on red blood cell immune adherence function in coriaria lactone-induced epileptic seizure rats]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1994; 25:175-7. [PMID: 7806195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The immune adherence function of red blood cells in 17 rats was studied. It was found that the rosette rate of red blood cell C3b receptor (RBC-C3bRR) was 7.45 +/- 1.36% in the epilepsy group (8 rats), and 10.84 +/- 1.77% in the control group (9 rats); and that the rosette rate of red blood cell immune complex (RBC-ICR) was 7.42 +/- 2.62% in the epilepsy, and 10.80 +/- 1.72% in the control. As compared with the control group, the rosette rate of red blood cell C3b receptor was remarkably decreased in the epilepsy group (P < 0.05). There was no significant difference between the two groups in RBC-ICR. The results from this study demonstrated that the CL-induced seizures might result in decrease in red blood cell immune adherence function of the epilepsy rats.
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Qu HT, Xie Y, Chen XL. [Correlationship between cellular DNA and AgNOR protein content in the developing course of colorectal adenocarcinoma]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1994; 16:192-5. [PMID: 7956697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Cellular DNA and AgNOR protein content were evaluated by automatic image analysis in tissue sections stained by combined Feulgen-AgNOR method of 9 normal colonic mucosae, 45 colorectal adenomas and 27 colorectal correlation between AgNOR protein and DNA contents. In adenocarcinomas, the DNA and AgNOR protein contents were higher than those in adenomas, which were in turn higher than those in normal colonic mucosa. However, there was considerable overlapping in the DNA or AgNOR protein content between adenoma and adenocarcinoma groups and between adenoma and normal colonic mucosa groups. By assessing the correlationship between the DNA and AgNOR protein contents, the number of the overlapping cases was reduced significantly. Therefore it is much more reliable to distinguish colorectal adenomas from adenocarcinomas by using the correlationship between the cellular DNA and the AgNOR protein contents in the same specimens.
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Schuppler S, Friedman SL, Marcus MA, Adler DL, Xie Y, Ross FM, Harris TD, Brown WL, Chabal YJ, Brus LE, Citrin PH. Dimensions of luminescent oxidized and porous silicon structures. PHYSICAL REVIEW LETTERS 1994; 72:2648-2651. [PMID: 10055937 DOI: 10.1103/physrevlett.72.2648] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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