626
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Wei J, Ci L, Jiang B, Li Y, Zhang X, Zhu H, Xu C, Wu D. Preparation of highly pure double-walled carbon nanotubes. ACTA ACUST UNITED AC 2003. [DOI: 10.1039/b300484h] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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627
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Wu D, Yao S, Dai X, Cai W. [Chinese hamster emotionality rating scale]. HUNAN YI KE DA XUE XUE BAO = HUNAN YIKE DAXUE XUEBAO = BULLETIN OF HUNAN MEDICAL UNIVERSITY 2002; 24:403-6. [PMID: 12080667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
To establish the rating method of Chinese Hamster emotionality and verify its reliability of assessment result so as to investigate the role of emotionality in onset/incidence of diabetes in Chinese Hamster of non-insulin-dependent diabetes mellitus, Ader's rating methods of emotionality were revised, the level of emotionality for Chinese Hamster was measured, cut off score of emotionality was computed, and reliability of rating scale was analysed. The results were that the cut off score of emotionality which was 5 scores could divide the high/low emotionality response in individual animal; Some items were moderately and highly correlated to total score (r = 0.3268-0.7347); The test-retest reliabilities of total score after 1 and 8 days ranged 0.5874 to 0.6105, the inter-rater agreement for reliability trials was 95.2%, and its Kappa value was 0.905. The results suggest that Chinese Hamster Emotionality Rating Scale has the satisfactory reliability.
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628
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Ierapetritou MG, Wu D, Vin J, Sweeney P, Chigirinskiy M. Cost Minimization in an Energy-Intensive Plant Using Mathematical Programming Approaches. Ind Eng Chem Res 2002. [DOI: 10.1021/ie011012b] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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629
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Wei J, Jiang B, Li Y, Xu C, Wu D, Wei B. Straight boron carbide nanorods prepared from carbon nanotubes. ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b204792f] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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630
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Agostinucci K, Manfredi T, Cosmas A, Martin K, Han S, Wu D, Sastre J, Meydani S, Meydani M. Vitamin E and Age Alter Liver Mitochondrial Morphometry. ACTA ACUST UNITED AC 2002. [DOI: 10.1089/10945450260195612] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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631
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Wu D, Doods H, Arndt K, Schindler M. Development and potential of non-peptide antagonists for calcitonin-gene-related peptide (CGRP) receptors: evidence for CGRP receptor heterogeneity. Biochem Soc Trans 2002; 30:468-73. [PMID: 12196117 DOI: 10.1042/bst0300468] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Calcitonin-gene-related peptide (CGRP) is a 37-amino-acid vasodilatory peptide, of which two isoforms, alpha CGRP and beta CGRP, have been described. The use of C-terminal fragments of CGRP peptide, such as human alpha CGRP-(8-37), has led to the pharmacological subdivision of CGRP receptors into CGRP-1 [high potency for binding of human alpha CGRP-(8-37)] and CGRP-2 (lower potency) receptors. We have recently developed BIBN4096BS, the first non-peptide CGRP antagonist, which has sub-nanomolar affinity for primate CGRP receptors. The use of BIBN4096BS has led to the discovery of further functional CGRP receptor heterogeneity in rat tissues. To further exploit BIBN4096BS as a pharmacological tool, we used BIBN4096BS in pig left anterior descending coronary vessels and cerebral basilar arteries, and compared functional with molecular data, characterizing CGRP receptor components. Our data show that, apart from a subdivision into CGRP-1 and -2 receptors, BIBN4096BS reveals additional functional differences between the actions of alpha CGRP and beta CGRP. However, evidence for CGRP receptor heterogeneity on a molecular level is scarce.
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632
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Zhu H, Jiang B, Xu C, Wu D. Long super-bundles of single-walled carbon nanotubes. Chem Commun (Camb) 2002:1858-9. [PMID: 12271644 DOI: 10.1039/b205401a] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
200 nm-thick super bundles showing a novel polygonization and densely aligned arrangement are found in long single-walled carbon nanotube (SWNT) strands prepared by the vertical floating catalytic method.
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633
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Ma R, Bando Y, Zhu H, Sato T, Xu C, Wu D. Hydrogen uptake in boron nitride nanotubes at room temperature. J Am Chem Soc 2002; 124:7672-3. [PMID: 12083917 DOI: 10.1021/ja026030e] [Citation(s) in RCA: 391] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hydrogen uptake capacities of 1.8 and 2.6 wt % were obtained on BN multiwalled nanotubes and bamboo-like nanotubes, respectively, under approximately 10 MPa at room temperature. The preliminary results show that chemical interactions mainly take place between hydrogen and BN. Taking into consideration the uniform semiconducting electronic property and ultimate stable chemical and thermal stability, BN nanotubes may exhibit some interesting possibilities in storing hydrogen. This will also provide some viewpoints on designing the carbon-based hydrogen storage system.
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634
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Tang JL, Wang ML, Qiu JJ, Wu D, Hu W, Shi BF, Hu Y, Li JP. Erratum to: Building a mouse model hallmarking the congenital human cytomegalovirus infection in central nervous system. Arch Virol 2002. [DOI: 10.1007/s00705-002-0853-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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635
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He B, Zhang X, Lian J, Sasaki H, Wu D, Towle VL. Boundary element method-based cortical potential imaging of somatosensory evoked potentials using subjects' magnetic resonance images. Neuroimage 2002; 16:564-76. [PMID: 12169243 DOI: 10.1006/nimg.2002.1127] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A boundary element method-based cortical potential imaging technique has been developed to directly link the scalp potentials with the cortical potentials with the aid of magnetic resonance images of the subjects. First, computer simulations were conducted to evaluate the new approach in a concentric three-sphere inhomogeneous head model. Second, the corresponding cortical potentials were estimated from the patients' preoperative scalp somatosensory evoked potentials (SEPs) based on the boundary element models constructed from subjects' magnetic resonance images and compared to the postoperative direct cortical potential recordings in the same patients. Simulation results demonstrated that the cortical potentials can be estimated from the scalp potentials using different scalp electrode configurations and are robust against measurement noise. The cortical imaging analysis of the preoperative scalp SEPs recorded from patients using the present approach showed high consistency in spatial pattern with the postoperative direct cortical potential recordings. Quantitative comparison between the estimated and the directly recorded subdural grid potentials resulted in reasonably high correlation coefficients in cases studied. Amplitude difference between the estimated and the recorded potentials was also observed as indexed by the relative error, and the possible underlying reasons are discussed. The present numerical and experimental results validate the boundary element method-based cortical potential imaging approach and demonstrate the feasibility of the new approach in noninvasive high-resolution imaging of brain electric activities from scalp potential measurement and magnetic resonance images.
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636
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Tang JL, Wang ML, Qiu JJ, Wu D, Hu W, Shi BF, Hu Y, Li JP, Tang J, Wang M, Qiu J, Shi B, Li J. Building a mouse model hallmarking the congenital human cytomegalovirus infection in central nervous system. Arch Virol 2002; 147:1189-95. [PMID: 12111428 DOI: 10.1007/s00705-002-0797-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
To investigate the mechanisms that human cytomegalovirus (HCMV) can vertically transmit from the placenta of mice to infect their offspring in the central nervous system (CNS) and cause congenital anomalies, and in order to provide basic research for preparing HCMV vaccine, we have developed a new type of mouse model of HCMV congenital CNS infection. Pure strain mice were propagated after being infected with HCMV. Then the degree of infection by HCMV to offspring was determined. The experiment shows that in the infection groups the mortality of fetal mice and the fatality of neonatal mice in one week are higher than that of the control groups (P < or = 0.05). At the same time we investigated the CNS of fetus's mice whose mothers were infected by HCMV. Our results showed: 1. The virus was successfully isolated from their cerebral cortex. 2. The signal of HCMV hybridization print was found in their nervous cell through in situ hybridization. 3. Especially human herpes virus-like particles and inclusion bodies in the plasm of nerve cell were found in the tissue of their brain under the electron microscope. This new type of mouse model of HCMV inherent CNS infection will help prepare HCMV vaccine and research HCMV congenital infection in CNS.
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637
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638
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He B, Yao D, Lian J, Wu D. An equivalent current source model and laplacian weighted minimum norm current estimates of brain electrical activity. IEEE Trans Biomed Eng 2002; 49:277-88. [PMID: 11942719 DOI: 10.1109/10.991155] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We have developed a method for estimating the three-dimensional distribution of equivalent current sources inside the brain from scalp potentials. Laplacian weighted minimum norm algorithm has been used in the present study to estimate the inverse solutions. A three-concentric-sphere inhomogeneous head model was used to represent the head volume conductor. A closed-form solution of the electrical potential over the scalp and inside the brain due to a point current source was developed for the three-concentric-sphere inhomogeneous head model. Computer simulation studies were conducted to validate the proposed equivalent current source imaging. Assuming source configurations as either multiple dipoles or point current sources/sinks, in computer simulations we used our method to reconstruct these sources, and compared with the equivalent dipole source imaging. Human experimental studies were also conducted and the equivalent current source imaging was performed on the visual evoked potential data. These results highlight the advantages of the equivalent current source imaging and suggest that it may become an alternative approach to imaging spatially distributed current sources-sinks in the brain and other organ systems.
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639
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Wu D, Yu L, Nair MG, DeWitt DL, Ramsewak RS. Cyclooxygenase enzyme inhibitory compounds with antioxidant activities from Piper methysticum (kava kava) roots. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2002; 9:41-47. [PMID: 11924763 DOI: 10.1078/0944-7113-00068] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Cyclooxygenase enzyme inhibitory assay-guided purification of ethyl acetate extract of Piper methysticum (kava kava) roots yielded six biologically active compounds (1-7), which were purified using MPLC, preparative TLC and HPLC methods. These compounds were also evaluated for antioxidant activities. Dihydrokawain (1) and yangonin (6) showed the highest COX-I and COX-II inhibitory activities at 100 microg/ml, respectively. The lipid oxidation assay did not reveal antioxidant activities for demethoxyangonin (2), dihydrokawain (1), kawain (4), dihydromethysticin (5) or methysticin (7) at 50 microg/ml. The antioxidant activities of flavokawain A (3) and yangonin (6) could not be tested in the lipid oxidation assay due to solubility problems. However, yangonin and methysticin showed moderate antioxidant activities in the free radical scavenging assay at 2.5 mg/ml.
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640
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Wu D, Chang F. Synergism in mosquitocidal activity of 26 and 65 kDa proteins fromBacillus thuringiensissubsp.israelensiscrystal. FEBS Lett 2001. [DOI: 10.1016/0014-5793(85)81290-4] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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641
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Abstract
Induction of CYP2E1 by ethanol is one of the central pathways by which ethanol generates a state of oxidative stress in hepatocytes. To study the biochemical and toxicological actions of CYP2E1, our laboratory established HepG2 cell lines which constitutively overexpress CYP2E1 and characterized these cells with respect to ethanol toxicity. Addition of ethanol or an unsaturated fatty acid such as arachidonic acid or iron was toxic to the CYP2E1-expressing cells but not control cells. This toxicity was associated with elevated lipid peroxidation and could be prevented by antioxidants and inhibitors of CYP2E1. Apoptosis occurred in the CYP2E1-expressing cells exposed to ethanol, arachidonic acid, or iron. Removal of GSH caused a loss of viability in the CYP2E1-expressing cells even in the absence of added toxin or pro-oxidant. This was associated with mitochondrial damage and decreased mitochondrial membrane potential. Surprisingly, CYP2E1-expressing cells had elevated GSH levels, due to transcriptional activation of gamma glutamyl cysteine synthetase. Similarly, levels of catalase, alpha-, and microsomal glutathione transferase were also increased, suggesting that upregulation of these antioxidant genes may reflect an adaptive mechanism to remove CYP2E1-derived oxidants. While it is likely that several mechanisms contribute to alcohol-induced liver injury, the linkage between CYP2E1-dependent oxidative stress, mitochondrial injury, and GSH homeostasis may contribute to the toxic action of ethanol on the liver. HepG2 cell lines overexpressing CYP2E1 may be a valuable model to characterize the biochemical and toxicological properties of CYP2E1.
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642
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Ro HS, Kim SW, Wu D, Webber C, Nicholson TE. Gene structure and expression of the mouse adipocyte enhancer-binding protein. Gene 2001; 280:123-33. [PMID: 11738825 DOI: 10.1016/s0378-1119(01)00771-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The adipocyte enhancer-binding protein (AEBP1) is a transcriptional repressor with carboxypeptidase activity. AEBP1 expression is down-regulated during adipogenesis. Aortic carboxypeptidase-like protein (ACLP) is a non-nuclear isoform of AEBP1 that has an N-terminal extension of 380 amino acids. ACLP expression is up-regulated during vascular smooth muscle cell differentiation. To gain insight into the regulation of AEBP1 isoform expression, we have determined the structural organization of the mouse AEBP1 gene. This gene extends over 10 kb, has 21 exons, and gives rise to two mRNAs (AEBP1 and ACLP). The 9th intron is retained in the mature AEBP1 transcript. Thus, ACLP encodes an additional 380 amino acids N-terminal to the first ATG codon of AEBP1 which is located in exon 10. RT-PCR experiments showed that both transcripts are expressed ubiquitously in all mouse tissues examined, while Western blot analysis suggested that expression is translationally regulated. Our results provide evidence that two isoforms of AEBP1 with very different functions are produced by an alternative splicing mechanism. This represents a new example of regulation of subcellular localization by protein truncation.
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643
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Chou CC, Wu D. Torsade de pointes induced by metoclopramide in an elderly woman with preexisting complete left bundle branch block. CHANG GUNG MEDICAL JOURNAL 2001; 24:805-9. [PMID: 11858397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
Abstract
There is a growing list of drugs implicated in acquired long QT syndrome and torsade de pointes. However, the torsadogenic potential of metoclopramide, a commonly used antiemetic and prokinetic drug, has not been reported in the literature, despite its chemical similarity to procainamide. We report on a 92-year-old woman with preexisting complete left bundle branch block who developed torsade de pointes after intravenous and oral administration of metoclopramide. This patient also developed torsade de pointes when cisapride and erythromycin were given simultaneously. These two episodes were suppressed successfully after discontinuing the offending drugs and administering class IB drugs. This is the first documentation that metoclopramide provokes torsade de pointes clinically. Metoclopramide should be used cautiously in patients with a risk of torsade de pointes.
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644
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Abstract
Consider two diagnostic procedures having binary outcomes. If one of the tests results in a positive finding, a more definitive diagnostic procedure will be administered to establish the presence or absence of a disease. The use of both tests will improve the overall screening sensitivity when the two tests are independent, compared with employing two tests that are positively correlated. We estimate the correlation coefficient of the two tests and derive statistical methods for testing the independence of the two diagnostic procedures conditional on disease status. The statistical tests are used to investigate the independence of mammography and clinical breast exams aimed at establishing the benefit of early detection of breast cancer. The data used in the analysis are obtained from periodic screening examinations of three randomized clinical trials of breast cancer screening. Analysis of each of these trials confirms the independence of the clinical breast and mammography examinations. Based on these three large clinical trials, we conclude that a clinical breast exam considerably increases the overall sensitivity relative to screening with mammography alone and should be routinely included in early breast cancer detection programs.
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645
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Jiang F, Huang S, Luo G, Wu D, Liang J, Liu C. [The measurement of multifocal electroretinography]. YAN KE XUE BAO = EYE SCIENCE 2001; 17:217-9. [PMID: 12567508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
PURPOSE Discussing the testing procedure of multifocal electroretinography(ERG). METHODS The testing procedure of 131 multifocal ERG records was reviewed. RESULTS Some variable factors existed in the measurement of multifocal ERG. These factors included the subject's co-operation, the mounting of electrode, the fixation of tested eye and adjustment of focus. The good records of multifocal ERG depend upon the skill of the operator. CONCLUSION The testing procedure of multifocal ERG must be standardized so as to ensure the reliability and repeatability of the results.
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646
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Zhang X, Li Y, Wu D, Wu J, Cheng Q, Zeng X, Liu X. [Changes serum level of tumor specific growth factor and their clinical significance in mechanical trauma patients]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 2001; 32:569-71. [PMID: 12528551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To investigate the post-traumatic changes in the serum level of tumor specific growth factor (TSGF) and their relationship with Injury Severity Score and to inquire into the possible mechanism and clinical significance. METHODS Fifty patients with mechanical trauma were eligible and included. According to the standard of Injury Severity Score (ISS), the patients were divided into there groups: mild degree group, (ISS < or = 16, n = 31) severe degree group (16 < ISS < 25, n = 13) extreme severe degree group (ISS > or = 25, n = 6). The blood samples of all patients were obtained within 24 hours, and those of 25 dynamically observed patients were obtained on days 3, 5, 7, 9 and 12. RESULTS The serum level of TSGF was significantly higher in patients with trauma in different groups (P < 0.05). The dynamical observation showed that the index demonstrated curve changes with increase in early stage and decrease later. the climax of TSGF appeared on 7 day in all 3 groups. The TSGF serum levels in extremely severe degree and severe degree groups > mild degree group on days 5, 7, 9 and 12 day (P < 0.05). CONCLUSION TSGF has relationship with the inflammatory response and recovery of trauma.
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647
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Li YH, Wang S, Cao A, Zhao D, Zhang X, Xu C, Luan Z, Ruan D, Liang J, Wu D, Wei B. Adsorption of fluoride from water by amorphous alumina supported on carbon nanotubes. Chem Phys Lett 2001. [DOI: 10.1016/s0009-2614(01)01351-3] [Citation(s) in RCA: 328] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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648
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Gu B, Wu D, Lü H, Li M, Gao H, Wan Y. Potentiation of docetaxel antitumor activity by batimastat against mouse forestomach carcinoma. CHINESE MEDICAL SCIENCES JOURNAL = CHUNG-KUO I HSUEH K'O HSUEH TSA CHIH 2001; 16:223-6. [PMID: 12903761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
OBJECTIVE To improve the treatment of tumors, we studied the combined effects of docetaxel and batimastat (BB-94) on mouse forestomach carcinoma (MFC), and compared them with doxorubicin. METHODS AND RESULTS In vitro, growth curve analysis, MTT assay and clonogenic assay used to determine the cytotoxic effect of docetaxel or/and BB-94 on MFC cell showed that docetaxel but not BB-94 had a significant cytotoxicity, and the effect of docetaxel wasn't enhanced by BB-94. In early stage MFC tumor model, obvious antitumor effect of docetaxel or doxorubicin given i.v. at maximum tolerated dose (MTD, docetaxel: 20 mg/kg; doxorubicin: 6 mg/kg) every 4 days for 3 injections (q4d x 3), even that of BB-94 (30 mg/kg i. p. qd x 20) was observed. Tumor growth inhibition was greater for docetaxel-batimastat (96.0%) than for doxorubicin-batimastat (88.0%), docetaxel (89.0%), doxorubicin (68.0%) and BB-94 (33.0%), and the effect of docetaxel could be potentiated by BB-94. Docetaxel also showed activity against advanced stage MFC tumor in dose-dependent manner, and was more effective at MTD than doxorubicin with 4/5 regressions, 46.5 days tumor growth delay and 2.8log(10) tumor cell kill. CONCLUSION Our results suggest that in the MFC model with dose and schedule used, docetaxel is an effective cytotoxic new drug against MFC tumor and BB-94 enchances the antitumor activity of docetaxel.
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649
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Righini C, Mouret P, Wu D, Blanchet C, Reyt E. [Is hepatic ultrasonography necessary in the initial check-up of patients with squamous cell carcinoma of the upper respiratory and digestive tract?]. ANNALES D'OTO-LARYNGOLOGIE ET DE CHIRURGIE CERVICO FACIALE : BULLETIN DE LA SOCIETE D'OTO-LARYNGOLOGIE DES HOPITAUX DE PARIS 2001; 118:359-64. [PMID: 11908337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
PURPOSE OF THE STUDY The purpose of our study was to determine the position and value of ultrasound scan of the liver in the initial check-up of patients treated for a squamous cell carcinoma of the upper respiratory and digestive tract. MATERIAL AND METHODS Our study is based on a retrospective review of 267 patients (249 males and 18 females) managed in the E.N.T. Department of Grenoble universitary hospital from 1993 to 1995 for a upper respiratory and digestive tract malignant tumor. No patient has been previously treated. The site of the primary tumor was: the oropharynx (108 cases), the hypopharynx (88 cases), the oral cavity (44 cases), the larynx (20 cases), the rhinopharynx (6 cases) and the cervical oesophagus (1 case). Endoscopic procedure with biopsy was performed for all the patients. Histologic examination revealed an invasive squamous cell carcinoma in all the cases. The complete check up included a ultrasound scan of the liver and a chest X-ray for all the patients. RESULTS Ultrasound scan of the liver revealed one or several metastases in 4 cases (1.5%). The primary tumor was hypopharyngeal in 3 cases (2 stages III, 1 stage IV) and oropharyngeal in 1 case (stage III). In three cases, carcinoma was poorly differentiated. Ultrasound scan of the liver was doubtful for 8 patients (3%). The primary tumor was oropharyngeal in 6 cases (1 stage I, 3 stages III, 2 stages IV), laryngeal in 1 case (stage III) and hypopharyngeal in case (stage IV). In six cases carcinoma was well differentiated. All the complementary examinations concluded to a benign liver disease, with a mean diagnosis delay of 4 weeks for the 8 patients. The mean follow-up duration of the 8 patients was 22 months (range 9 to 42 months). None presented any metastases during the follow up. CONCLUSION Our results compared with those of the literature revealed that ultrasound scan of the liver is a few specific examination which may be recommended for hypopharyngeal tumors, or for a large cervical adenopathy (N2 or N3), a poor differentiated tumor wherever the site of the primary tumor is.
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650
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Liu J, Jiang J, Zhang Y, Wu D, Yang G, Huang X, Wei X. [An experimental study on bone marrow purging in vitro for patients with chronic myelogenous leukemia]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 2001; 32:599-601. [PMID: 12528561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To investigate the effect of IL-2, IFN and bcr-abl AS-ODN on bone marrow purging in vitro for patients with chronic myelogenous leukemia (CML). METHODS By amplifying in vitro clone forming culture, and purging the bone marrow of 5 CML patients through different combined use of IL-2, IFN and bcr-abl AS-ODN, we compared the effects of 4 combined regimens. RESULTS It was found that the suppressive effects of the 4th regimen combining IL-2 (800 U/ml), IFN (800 u/ml) and bcr-abl AS-ODN (30 micrograms/ml) on leukemia cell clone forming unit (CFU) were significantly different from the suppressive effects of the other 3 regimens (P < 0.01). With the use of the 4th regimen, the GM-CFU and L-CFU survival rates were 26.91% and 3.49% respectively (P < 0.01). CONCLUSION The combined regimen of IL-2 (800 U/ml), IFN (800 u/ml) and bcr-abl AS-ODN (30 micrograms/ml) has good effect on selective CML bone marrow purging in vitro and can be used in clinical purging of CML bone marrow.
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