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Nguyen TP, Thiery L, Euphrasie S, Gomès S, Hay B, Vairac P. Calibration of thermocouple-based scanning thermal microscope in active mode (2ω method). Rev Sci Instrum 2019; 90:114901. [PMID: 31779385 DOI: 10.1063/1.5119044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 10/26/2019] [Indexed: 06/10/2023]
Abstract
We present a procedure dedicated to the calibration of a scanning thermal microscopy probe operated in an active mode and a modulated regime especially for the measurement of solid material thermal conductivities. The probe used is a microthermocouple wire mounted on a quartz tuning fork. Measurements on reference samples are performed successively in vacuum and ambient air conditions revealing a clear difference in the dependence of the thermal interaction between the probe and the sample on the sample properties. Analytical modeling based on the resolution of the heat equation in the wire probe and a description of the thermal interaction using a network of thermal conductances are used to fit experimental data and analyze this difference. We have experimentally verified that the effective thermal contact radius of the probe tip depends on the sample thermal conductivity in ambient conditions, whereas it remains constant in vacuum. We have defined the measurement range of the technique based on the decrease in the probe sensitivity at high thermal conductivities. Considering the experimental noise of our electrical device, it is shown that the maximum measurable value of thermal conductivity is near 23 W m-1 K-1 in vacuum and 37 W m-1 K-1 in ambient air conditions. Moreover, the lowest uncertainties are obtained for thermal conductivities below 5 W m-1 K-1 typically.
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Affiliation(s)
- T P Nguyen
- Institut FEMTO-ST, UMR 6174, CNRS, ENSMM, Univ. Bourgogne Franche-Comté, 15B, Avenue des Montboucons, 25030 Besancon Cedex, France
| | - L Thiery
- Institut FEMTO-ST, UMR 6174, CNRS, ENSMM, Univ. Bourgogne Franche-Comté, 15B, Avenue des Montboucons, 25030 Besancon Cedex, France
| | - S Euphrasie
- Institut FEMTO-ST, UMR 6174, CNRS, ENSMM, Univ. Bourgogne Franche-Comté, 15B, Avenue des Montboucons, 25030 Besancon Cedex, France
| | - S Gomès
- CETHIL UMR5008, Univ. Lyon, CNRS, INSA-Lyon, Univ. Claude Bernard Lyon 1, F-69621 Villeurbanne, France
| | - B Hay
- LNE, 1 Rue Gaston Boissier, 75015 Paris, France
| | - P Vairac
- Institut FEMTO-ST, UMR 6174, CNRS, ENSMM, Univ. Bourgogne Franche-Comté, 15B, Avenue des Montboucons, 25030 Besancon Cedex, France
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Miyoshi T, Nguyen TP, Tsumuraya T, Kimura K, Watanabe Y. Energy consumption in a baffled membrane bioreactor (B-MBR): estimation based on long-term continuous operation. Water Sci Technol 2019; 80:1011-1021. [PMID: 31799945 DOI: 10.2166/wst.2019.335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We investigated the operating conditions of a baffled membrane bioreactor (B-MBR) under which long-term stable operation can be achieved through the continuous operation of a pilot-scale B-MBR. Under appropriate operating conditions, the B-MBR was capable of achieving excellent treated water quality in terms of biochemical oxygen demand and concentration of total nitrogen. Excellent removal of total phosphorus was also achieved. In addition, the degree of membrane fouling was acceptable, indicating that stable continuous operation of a B-MBR is possible under the operating conditions adopted in the present study. Estimation of the specific energy consumption in hypothetical full-scale B-MBRs operated under the conditions recommended by the findings was also performed in this study. The results suggest that energy consumption in full-scale B-MBRs would be in the range of 0.20-0.22 kWh/m3. These results strongly suggest that energy consumption in MBR operation can be significantly reduced by applying the concept of a B-MBR.
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Affiliation(s)
- T Miyoshi
- Maezawa Industries, Inc., Kawaguchi-Shi, Saitama, Japan E-mail:
| | - T P Nguyen
- Maezawa Industries, Inc., Kawaguchi-Shi, Saitama, Japan E-mail:
| | - T Tsumuraya
- Maezawa Industries, Inc., Kawaguchi-Shi, Saitama, Japan E-mail:
| | - K Kimura
- Division of Built Environment, Faculty of Engineering, Hokkaido University, Sapporo, Japan
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Miyoshi T, Tsumuraya T, Nguyen TP, Kimura K, Watanabe Y. Effects of recirculation and separation times on nitrogen removal in baffled membrane bioreactor (B-MBR). Water Sci Technol 2018; 77:2803-2811. [PMID: 30065132 DOI: 10.2166/wst.2018.270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this study, we investigated the effects of recirculation and separation times on removals of organic matter, nitrogen, and phosphorus in a baffled membrane bioreactor (B-MBR) treating real municipal wastewater. A pilot-scale B-MBR experimental apparatus was operated under two different sets of recirculation and separation times. The results revealed that, irrespective of operating conditions, the biochemical oxygen demand (BOD) and concentration of total nitrogen (T-N) in the treated water can be lowered to less than 3 and 5 mg/L, respectively. Although T-N was effectively removed in the two different operating conditions, increase in the fraction of recirculation time results in tiny deterioration of nitrogen removal efficiency in the B-MBR. Phosphorus removal efficiency was also slightly decreased as the fraction of recirculation time (ratio between recirculation and separation times) was increased. The results of the measurement of dissolved oxygen (DO) profiles at different points of the B-MBR apparatus indicate that the increase in DO concentration in the anoxic zone of the B-MBR becomes much more pronounced by increasing recirculation intensity. On the basis of the results obtained in this study, it can be concluded that efficient removal of BOD, T-N, and total phosphorus can be achieved by the B-MBR as long as appropriate recirculation intensity is selected.
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Affiliation(s)
- T Miyoshi
- Maezawa Industries, Inc., 5-11, Naka-Cho, Kawaguchi-Shi, Saitama 332-8556, Japan E-mail:
| | - T Tsumuraya
- Maezawa Industries, Inc., 5-11, Naka-Cho, Kawaguchi-Shi, Saitama 332-8556, Japan E-mail:
| | - T P Nguyen
- Maezawa Industries, Inc., 5-11, Naka-Cho, Kawaguchi-Shi, Saitama 332-8556, Japan E-mail:
| | - K Kimura
- Division of Built Environment, Faculty of Engineering, Hokkaido University, Sapporo, Japan
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Clergereaux R, Jolinat P, Nguyen TP, Destruel P, Farenc J. Diodes électroluminescentes à base de tris(8-hydroxyquinoline)
aluminium : rôle des couches de transport. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp:1998280] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Nguyen YTT, Nguyen TB, Nguyen TP, Nguyen TH, Vu HH, Nguyen TV, Pham TH, Do TT, Duong HT, Nguyen LH, Partridge JM, Kile JC, Iuliano A, Nguyen HT. Healthcare seeking behavior for respiratory illness in a northern province of Vietnam. Antimicrob Resist Infect Control 2015. [PMCID: PMC4474730 DOI: 10.1186/2047-2994-4-s1-p16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Ngo TD, Nguyen QT, Nguyen TP, Tran P. Effect of Nanoclay on Thermomechanical Properties of Epoxy/Glass Fibre Composites. Arab J Sci Eng 2015. [DOI: 10.1007/s13369-015-1898-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Nguyen YTT, Nguyen TB, Nguyen TP, Nguyen TH, Vu HH, Le MTQ, Tran DN, Do TT, Partridge JM, Kile JC, Nguyen TV, Nguyen HT. Influenza-related severe acute respiratory infection in the north of Vietnam: healthcare burden and economic impact. Antimicrob Resist Infect Control 2015. [PMCID: PMC4474855 DOI: 10.1186/2047-2994-4-s1-p14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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8
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Tran NT, Nguyen TP, Homasson JP. [Aspergillus niger responsible for a tracheo-oesophageal fistula in an immunocompetent patient]. Rev Pneumol Clin 2009; 65:297-299. [PMID: 19878804 DOI: 10.1016/j.pneumo.2009.03.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2008] [Revised: 01/18/2009] [Accepted: 03/06/2009] [Indexed: 05/28/2023]
Abstract
Tracheal or bronchial aspergillar locations are rare. They are mainly found in patients with general or localised immune deficiency. The authors report the case of a 53-year-old Vietnamese immunocompetent patient without any factors of risk who suddenly came down with a perforation syndrome indicating a tracheo-oesophageal fistula. The bronchial samples helped identify Aspergillus niger as the agent incriminated. Surgical treatment associated with an antifungal treatment provided a cure without any recurrence for 3 years.
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Affiliation(s)
- N T Tran
- Hôpital Pham Ngoc Thach, 120, Hung Vuong, Ho Chi Minh Ville, Viet Nam.
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Charkin OP, Klimenko NM, Nguyen TP, Charkin DO, Wang YS, Chang HC, Lin SH. Theoretical study of “deep” fragmentation of hemin ion with successive loss of methyl and vinyl groups. RUSS J INORG CHEM+ 2006. [DOI: 10.1134/s0036023606100159] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Nguyen TP, Rayburn WF. 296 MORBIDITY WITH INDUCTION OF LABOR IN NULLIPAROUS PATIENTS WITH SEVERE PREECLAMPSIA. J Investig Med 2006. [DOI: 10.2310/6650.2005.x0004.295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Mabrouk A, Alimi K, Molinié P, Nguyen TP. A Combined Experimental and Theoretical Study on the Effect of Doping and Interface Formation on Ppv−ether Copolymer. J Phys Chem B 2005; 110:1141-50. [PMID: 16471656 DOI: 10.1021/jp0535792] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We present a detailed optoelectronic and vibrational study devoted to the transformation from neutral to doped PPV-ether copolymer in both powder and thin film states. The full geometries were optimized with the density functional theory (DFT) for neutral and doped states, where a comparative geometric study was established. The lowest singlet excited-state geometries have been investigated by using the configuration interaction single (CIS/3-21G(d)) method. The absorption spectra are then calculated respectively on the basis of the ground- and excited-state geometries. Our calculation results are in close agreement with those available from experiments. The charge distribution and excitation energies of singly charged PPV-ether are calculated, where two subgap absorption features are found to dominate the optical spectrum correlated with the polaron picture. These theoretical results are compared to experimental optical data illustrated by iodine-doped PPV-ether. Next, we have performed a simulation to model the conformations and the electronic structure modifications of interface formation of PPV-ether copolymer thin film with calcium (Ca), magnesium (Mg), and aluminum (Al) metal as a cathode and indium tin oxide (ITO) as anode in polymer LEDs. By providing the optical parameter obtained and the chemical reaction at the interface, we present the energetic diagram near the interface and the energy position of the lowest occupied molecular orbital with respect to the electrode Fermi level.
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Affiliation(s)
- A Mabrouk
- Laboratoire des Matériaux, Faculté des Sciences de Monastir, 5000 Monastir, Tunisia
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Simos C, Rodriguez L, Skarka V, Nguyen Phu X, Errien N, Froyer G, Nguyen TP, Le Rendu P, Pirastesh P. Measurement of the third order nonlinear properties of conjugated polymers embedded in porous silicon and silica. ACTA ACUST UNITED AC 2005. [DOI: 10.1002/pssc.200461127] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Bok RA, Hansell EJ, Nguyen TP, Greenberg NM, McKerrow JH, Shuman MA. Patterns of protease production during prostate cancer progression: proteomic evidence for cascades in a transgenic model. Prostate Cancer Prostatic Dis 2004; 6:272-80. [PMID: 14663466 DOI: 10.1038/sj.pcan.4500676] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Extracellular proteases are recognized as critical factors in the progression of a number of carcinomas, including prostate cancer. Matrix metalloproteases (MMP) are important in processes of tumor growth, invasion and dissemination, but other classes of proteases, such as serine and cysteine proteases, also contribute. We utilized the TRAMP model for prostate cancer to elucidate proteases involved in prostate cancer progression. General proteomic analysis was performed on normal murine prostate, early TRAMP tumors and advanced TRAMP tumors, as well as normal and involved lymph nodes. Zymography and antigenic analyses revealed increased expression of mainly pro-MMP in early TRAMP tumors but substantial elaboration of activated MMP only in late TRAMP tumors. Progressive increase in cysteine, serine and certain membrane-bound proteases from normal to early to advanced prostate tumors, was also seen. Our results implicate pericellular proteases as initiators of major proteolytic cascades during tumor progression and suggest targets for maximal therapeutic effect.
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Affiliation(s)
- R A Bok
- Department of Medicine, University of California, San Francisco, California 94143, USA.
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Nguyen TP, Le Rendu P, Lakéhal M, de Kok M, Vanderzande D, Bulou A, Bardeau JP, Joubert P. Filling porous silicon pores with poly(p phenylene vinylene). ACTA ACUST UNITED AC 2003. [DOI: 10.1002/pssa.200306506] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Abstract
Even though chemotherapy plays a major role in the treatment of aggressive non-Hodgkin's lymphomas, the high radiosensitivity of the lymphatic lesions has established radiotherapy as an important component in the management of the disease in localized stages. Nevertheless, the treatment strategies with regard to the stage-adopted indications for radiotherapy, the treatment volume, and the dose remain controversial. This article reviews the available data concerning combined-modality treatment in localized stages and treatment of bulky lesions and residual lymphomas after chemotherapy with emphasis on the role of radiation therapy.
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Affiliation(s)
- Ch Rübe
- Abteilung für Strahlentherapie, Universitätskliniken des Saarlandes, Homburg/Saar.
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Rübe C, Nguyen TP, Klöss M, Loeffler M, Trümper L, Pfreunschuh M. Consolidation radiotherapy to bulky disease in aggressive NHL. First results of the NHL B-94 trial of the DSHNHL. Ann Hematol 2002; 80 Suppl 3:B84-5. [PMID: 11757716 DOI: 10.1007/pl00022798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
The impact of radiotherapy in aggressive NHL is not well defined. In the NHL B-94 trial of the DSHNHL, an irradiation of bulky disease areas was done after completing 6 cycles of CHOP/CHOEP chemotherapy. In the entire patient group, including those patients with extranodal disease and those who did not receive the complete chemotherapy, bulky disease was a significant independent prognostic factor concerning recurrence-free survival (66.1% (no bulk) vs. 53.3% (bulk), p=0.0001). Out of 366 patients with nodal disease only and 6 cycles of chemotherapy according to the protocol, 84 of 91 patients with bulky disease were irradiated with 36 Gy. In this group of patients the prognostic impact of bulky disease could not be shown any longer (recurrence-free survival 77.3% (no bulk) vs. 74.1% (bulk). Localized radiotherapy of bulky disease areas may therefore have contributed to an improvement in outcome in this high-risk group.
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Affiliation(s)
- C Rübe
- Department for Radiotherapy, Saarland University, Germany.
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Abstract
We report a patient with Gardner's syndrome who, in addition to a total colectomy, had multiple excisions of desmoid tumors in both thighs. He presented with left-sided neck swelling and pain. MRI was highly suggestive of desmoid tumors in multiple neck muscles. To our knowledge this is the first description of diffuse fibromatosis of the neck in association with Gardner's syndrome.
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Affiliation(s)
- A T Rai
- Department of Radiology, West Virginia University Hospitals, Robert C. Byrd Health Sciences Center, Morgantown 26506-9235, USA.
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deVos SA, Nguyen TP, Ip J, Rendu PL, Tran VH. X-ray photoelectron spectroscopy study of the interface formed between chromium and 4,4?-bis (4-dimethylaminostyryl) benzene. SURF INTERFACE ANAL 2001. [DOI: 10.1002/sia.1140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Luo G, Zhang JQ, Nguyen TP, Herrera AH, Paterson B, Horowits R. Complete cDNA sequence and tissue localization of N-RAP, a novel nebulin-related protein of striated muscle. Cell Motil Cytoskeleton 2000; 38:75-90. [PMID: 9295142 DOI: 10.1002/(sici)1097-0169(1997)38:1<75::aid-cm7>3.0.co;2-g] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We have cloned and sequenced the full-length cDNA of N-RAP, a novel nebulin-related protein, from mouse skeletal muscle. The N-RAP message is specifically expressed in skeletal and cardiac muscle, but is not detected by Northern blot in non-muscle tissues. The full-length N-RAP cDNA contains an open reading frame of 3,525 base pairs which is predicted to encode a protein of 133 kDa. A 587 amino acid region near the C-terminus is 45% identical to the actin binding region of human nebulin, containing more than 2 complete 245 residue nebulin super repeats. The N-terminus contains the consensus sequence of a cysteine-rich LIM domain, which may function in mediating protein-protein interactions. These data suggest that the encoded protein may link actin filaments to some other proteins or structure. We expressed full-length N-RAP in Escherichia coli, as well as the nebulin-like super repeat region of N-RAP (N-RAP-SR) and the region between the LIM domain and N-RAP-SR (N-RAP-IB). An anti-N-RAP antibody raised against a 30 amino acid peptide corresponding to sequence from N-RAP-IB detected recombinant N-RAP and N-RAP-IB, but failed to detect N-RAP-SR. This antibody specifically identified a 185 kDa band as N-RAP on immunoblots of mouse skeletal and cardiac muscle proteins. In an assay of actin binding to electrophoresed and blotted proteins, we detected significant actin binding to expressed nebulin super repeats and N-RAP-SR, but only a trace amount of binding to N-RAP-IB. In immunofluorescence experiments, N-RAP was found to be localized at the myotendinous junction in mouse skeletal muscle and at the intercalated disc in cardiac muscle. Based on its domain organization, actin binding properties, and tissue localization, we propose that N-RAP plays a role in anchoring the terminal actin filaments in the myofibril to the membrane and may be important in transmitting tension from the myofibrils to the extracellular matrix.
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Affiliation(s)
- G Luo
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland 20892-2755, USA
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Abstract
BACKGROUND Despite having a presumed congenital origin, familial cases of colloid cysts have been reported only rarely. The first case of a brother and sister with colloid cysts is reported here, and the relevant literature is reviewed. METHODS A 25-year-old man presented with a 24-h history of headache and vomiting. He rapidly became unconscious and fulfilled the criteria for brain death on arrival at hospital. No surgical intervention was performed. RESULTS The patient's sister presented at the age of 41 with headaches and rapidly became unconscious. The sister had urgent bilateral ventriculostomies. followed by transcallosal removal of a colloid cyst. CONCLUSIONS These cases support the hypothesis that colloid cysts are congenital lesions and provide some evidence of a possible genetic predisposition to their formation. Sudden death remains a real risk for patients harbouring a colloid cyst.
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Affiliation(s)
- M A Stoodley
- Department of Neurosurgery, Royal Perth Hospital, Western Australia, Australia.
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Dupraz A, Nguyen TP, Richard M, Daculsi G, Passuti N. Influence of a cellulosic ether carrier on the structure of biphasic calcium phosphate ceramic particles in an injectable composite material. Biomaterials 1999; 20:663-73. [PMID: 10208409 DOI: 10.1016/s0142-9612(98)00222-1] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
An injectable composite material based on biphasic calcium phosphate (BCP) and a nonionic cellulose ether has been elaborated for use in percutaneous surgery for spine fusion. This paper reports the characterization results of this material by spectroscopic techniques including X-ray diffraction (XRD), infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) fitted with an energy dispersive X-Ray analysis system and high-resolution transmission electron microscopy (HR-TEM). From FTIR and XPS results, it was observed that the adhesion between the polymer and the ceramic might be insured by oxygen bridging developed through an ionic bonding between calcium ions and (C-O) groups of the polymer. Moreover, XPS showed attraction of Ca2+ ions in the polymer matrix, while the ceramic surface was modified in a HPO4(2-) -rich layer. These results suggest a possible dissolution/precipitation process at the interface ceramic/polymer. HR-TEM observations supported this hypothesis, showing a light contrasted fringe at the surface of the ceramic grains in the composite paste. As well, changes in the XRD spectra could indicate a small decrease in the crystal size of the BCP powder through the contact to polymer solution. In addition, SEM observation showed a decrease of the initial BCP granulometry. Aggregates of 80-200 microm seemed to be mostly dissociated in micrograins. The ceramic grains were coated with and bonded between each other by the polymer matrix, which acted as spacer in between the ceramic grains, creating a macroporous-like material structure.
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Affiliation(s)
- A Dupraz
- Laboratoire de recherche sur les Tissus Calcifíes et les Biomatériaux UPRES EA 2159, Nantes, France
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Filatov GN, Nguyen TP, Kraner SD, Barchi RL. Inactivation and secondary structure in the D4/S4-5 region of the SkM1 sodium channel. J Gen Physiol 1998; 111:703-15. [PMID: 9607932 PMCID: PMC2217155 DOI: 10.1085/jgp.111.6.703] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/1997] [Accepted: 03/25/1998] [Indexed: 11/20/2022] Open
Abstract
The D4/S4-5 interhelical region plays a role in sodium channel fast inactivation. Examination of S4-5 primary structure in all domains suggests a possible amphipathic helical conformation in which a conserved group of small hydrophobic residues occupies one contiguous surface with a more variable complement of nonpolar and polar residues on the opposite face. We evaluated this potential structure by replacing each residue in D4/S4-5 of the rat SkM1 skeletal muscle sodium channel with substitutions having different side chain properties. Of the 63 mutations analyzed, 44 produced functional channels. P1473 was intolerant of substitutions. Nonpolar substitutions in the conserved hydrophobic region were functionally similar to wild type, while charged mutations in this region before P1473 were nonfunctional. Charged mutations at F1466, M1469, M1470, and A1474, located on the opposite surface of the predicted helix, produced functional channels with pronounced slowing of inactivation, shifted voltage dependence of steady-state inactivation, and increased rate of recovery from inactivation. The substituted-cysteine-accessibility method was used to probe accessibility at each position. Residues L1465, F1466, A1467, M1469, M1470, L1472, A1474, and F1476C were easily accessible for modification by sulfhydryl reagents; L1464, L1468, S1471, and L1475 were not accessible within the time frame of our measurements. Molecular dynamics simulations of residues A1458 to N1477 were then used to explore energetically favorable local structures. Based on mutagenesis, substituted-cysteine-accessibility method, and modeling results, we suggest a secondary structure for the D4/S4-5 region in which the peptide chain is alpha-helical proximal to P1473, bends at this residue, and may continue beyond this point as a random coil. In this configuration, the entire resultant loop is amphipathic; four residues on one surface could form part of the binding site for the inactivation particle.
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Affiliation(s)
- G N Filatov
- Department of Neurology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, USA
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Selesnick S, Nguyen TP, Eisenman DJ. Surgical treatment of acquired external auditory canal atresia. Am J Otol 1998; 19:123-30. [PMID: 9520045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE This study aimed to analyze the etiologies, clinical presentation, treatment options, and results of treatment in a series of patients with acquired external auditory canal atresia (AEACA) and to put this analysis in the context of the existing literature on this topic. STUDY DESIGN The study design was a retrospective case review. SETTING The study was performed at a tertiary otologic referral practice. PATIENTS This study included patients with soft tissue AEACA. INTERVENTION Patients received surgical excision of atresia process, conchomeatoplasty, canalplasty, and, when indicated, split-thickness skin graft (STSG) reconstruction. MAIN OUTCOME MEASURES These included definition of a characteristic patient profile and the incidence of postoperative complications including restenosis. RESULTS This series of six patients is unusual in that in all patients, atresia resulted either from prior surgery or trauma rather than from chronic infection, which is the most commonly seen etiology in the literature. An average of 14 years' lag time transpired between the inciting event and the surgical repair. Five of six patients required STSG for reconstruction; all did well. The single patient who did not require STSG had a minor restenosis develop that did not require revision surgery. CONCLUSIONS Acquired external auditory canal atresia often is caused by trauma or prior surgery. Years may elapse between the inciting event and reconstructive surgery. The use of an STSG can be an important component to a successful surgical outcome.
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Affiliation(s)
- S Selesnick
- Department of Otorhinolaryngology, The New York Hospital-Cornell University Medical Center, Manhattan Eye, Ear and Throat Hospital, New York 10021, USA
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Abstract
Targeted disruption of the Hoxd-10 gene, a 5′ member of the mouse HoxD linkage group, produces mice with hindlimb-specific defects in gait and adduction. To determine the underlying causes of this locomotor defect, mutant mice were examined for skeletal, muscular and neural abnormalities. Mutant mice exhibit alterations in the vertebral column and in the bones of the hindlimb. Sacral vertebrae beginning at the level of S2 exhibit homeotic transformations to adopt the morphology of the next most anterior vertebra. In the hindlimb, there is an anterior shift in the position of the patella, an occasional production of an anterior sesamoid bone, and an outward rotation of the lower part of the leg, all of which contribute to the defects in locomotion. No major alterations in hindlimb musculature were observed, but defects in the nervous system were evident. There was a decrease in the number of spinal segments projecting nerve fibers through the sacral plexus to innervate the musculature of the hindlimb. Deletion of a hindlimb nerve was seen in some animals, and a shift was evident in the position of the lumbar lateral motor column. These observations suggest a role for the Hoxd-10 gene in establishing regional identity within the spinal cord and imply that patterning of the spinal cord may have intrinsic components and is not completely imposed by the surrounding mesoderm.
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Affiliation(s)
- E M Carpenter
- Mental Retardation Research Center, UCLA School of Medicine, Los Angeles, CA 90024, USA
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Bui XV, Phan TS, Tran TV, Le TK, Nguyen TP, Pham CK. [Efficacy of pyrantel pamoate in ascaridiasis in Vietmanese children]. Med Trop (Mars) 1997; 57:99-100. [PMID: 9289624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Abstract
We report the results obtained by infrared (IR) and X-ray photoelectron spectroscopy (XPS) on the multiphasic composite material formed by the mixture of biphasic calcium phosphate (BCP) and hydroxypropylmethylcellulose (HPMC). This synthetic material, intended for bone substitution, is injectable and allows percutaneous surgery. Core level spectra of carbon, oxygen, calcium, and phosphorus were recorded on separate components before mixing and then compared to those obtained in the final product. Analysis of the spectra shows that formation of calcium carbonate has occurred upon mixing the components in agreement with IR results. An attempt to explain the formation mechanism of the composite is given involving the nature of the constituents on one hand and the possible reactions between the different components on the other.
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Affiliation(s)
- T P Nguyen
- Laboratoire de Physique Cristalline, Institut des Matériaux de Nantes, France
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Abstract
BACKGROUND Hydroxypropyl methylcellulose (HPMC), a popular gonioscopic solution, can cause discomfort and blurred vision. These side effects have been attributed to the preservative benzalkonium chloride (BAK). Carboxymethylcellulose (CMC), an unpreserved, viscous solution, might well provide adequate patient comfort and cushioning during gonioscopy without producing blur or irritation. METHODS The effects of CMC and HPMC during gonioscopy were evaluated in 55 human subjects. Corneal staining, comfort, subjective vision, and measured visual acuity (VA) were assessed. RESULTS In comparison with HPMC, CMC effected less corneal staining, greater comfort, and better vision after the procedure, CONCLUSION CMC proved to be a viable and superior alternative to HPMC as a gonioscopic solution.
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Affiliation(s)
- T P Nguyen
- Southern California College of Optometry, Fullerton, USA
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Nguyen TP, Lefrant S, Amgaad K, Cailler M, Tran VH. Improvement in adhesion of aluminum layer on plasma treated poly(phenylene-vinylene) substrates. ACTA ACUST UNITED AC 1996. [DOI: 10.1063/1.49470] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Affiliation(s)
- T P Nguyen
- Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA
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Affiliation(s)
- T P Nguyen
- Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA
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Affiliation(s)
- T P Nguyen
- Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA
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Affiliation(s)
- T P Nguyen
- Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA
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Lie YS, Penuel EM, Low MA, Nguyen TP, Mangahas JO, Anderson KP, Petropoulos CJ. Chinese hamster ovary cells contain transcriptionally active full-length type C proviruses. J Virol 1994; 68:7840-9. [PMID: 7966574 PMCID: PMC237246 DOI: 10.1128/jvi.68.12.7840-7849.1994] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
We have isolated a genomic locus from Chinese hamster ovary (CHO) cells that contains a full-length provirus. Nucleotide sequence analysis indicates that it is a defective member of the rodent type C retrovirus family with an env region that is similar to those of mouse amphotropic retrovirus and subgroup B feline leukemia virus. We were able to demonstrate that this provirus is a member of a closely related family of full-length proviruses in CHO cells and Chinese hamster liver. Hybridization probes generated from this genomic clone were used to characterize type C retrovirus RNA expression in CHO cells. Full-length genomic RNA and subgenomic envelope mRNA were detected in CHO cell lines but not in the human-derived 293 cell line. Interestingly, we discovered that the site of retrovirus integration lies within a G repeat sequence belonging to the short interspersed element family of retroposons.
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Affiliation(s)
- Y S Lie
- Molecular Virology Laboratory, Genentech, Inc., South San Francisco, California 94080
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Faulques E, Mahot P, Spiesser M, Nguyen TP, Garz G, Gonzalez C, Molinié P. Oxygen-sublattice ordering and intercalation mechanism of chlorine in YBa2Cu3O6+ delta. Phys Rev B Condens Matter 1994; 50:1209-1222. [PMID: 9975792 DOI: 10.1103/physrevb.50.1209] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Nguyen TP, Lam TT, Barthold SW, Telford SR, Flavell RA, Fikrig E. Partial destruction of Borrelia burgdorferi within ticks that engorged on OspE- or OspF-immunized mice. Infect Immun 1994; 62:2079-84. [PMID: 8168973 PMCID: PMC186469 DOI: 10.1128/iai.62.5.2079-2084.1994] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
We determined whether Borrelia burgdorferi outer surface proteins (Osps) E and F could elicit immune responses useful for a Lyme disease vaccine. Thirty days after challenge with B. burgdorferi, mice produced antibodies to OspE but not OspF, whereas antibodies to OspF were present in sera of mice obtained 90 days after infection. Examination of sera from patients with Lyme disease revealed antibodies to OspF in a small number (14%) of early-stage disease patients but in a majority (58%) of patients with late-stage disease, while antibodies to OspE were rarely detected in patients. Mice immunized with recombinant OspE or OspF produced high titers of antibodies to OspE or OspF, respectively. OspF-immunized mice were partially protected from both intradermal syringe challenge and tick-mediated transmission of B. burgdorferi while vaccination with OspE did not confer immunity. B. burgdorferi organisms were, however, substantially destroyed within ticks that engorged on either OspE- (75% reduction in the number of spirochetes within the ticks, compared with controls) or OspF (90% reduction in the number of spirochetes within the ticks)-immunized mice.
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Affiliation(s)
- T P Nguyen
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut 06520
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Lam TT, Nguyen TP, Fikrig E, Flavell RA. A chromosomal Borrelia burgdorferi gene encodes a 22-kilodalton lipoprotein, P22, that is serologically recognized in Lyme disease. J Clin Microbiol 1994; 32:876-83. [PMID: 8027338 PMCID: PMC263156 DOI: 10.1128/jcm.32.4.876-883.1994] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
We describe the isolation of the gene encoding a 22-kDa antigen from Borrelia burgdorferi, the etiologic agent of Lyme disease. The p22 gene is 582 nucleotides in length and encodes a protein of 194 amino acids with a predicted molecular mass of 21.8 kDa. The leader signal sequence of P22 consists of a positively charged short amino terminus, a central hydrophobic domain, and at the carboxyl terminus, a cleavage site that is presumably recognized and cleaved by a B. burgdorferi signal peptidase. P22 has 98.5% homology with the recently described B. burgdorferi protein IpLA7. P22 is processed as a lipoprotein, as demonstrated by [3H]palmitate labeling. Pulsed-field gel electrophoresis showed that p22, like LA7, is localized to the linear chromosome of B. burgdorferi. Examination of sera from patients with Lyme disease revealed that antibodies to P22 are rarely detected in patients with early-stage disease characterized by erythema migrans (2 of 20), and 35% of the patients with late-stage disease characterized by arthritis (9 of 26) developed antibodies to P22. Sera from patients with syphilis did not react with P22. When patients with late-stage disease were tested for their antibody reactivities to four other outer surface proteins (OspA), OspB, OspE, and OspF), 75% of these patients responded to P22 or to one or more outer surface proteins.
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Affiliation(s)
- T T Lam
- Section of Immunobiology, Howard Hughes Medical Institute, New Haven, Connecticut
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Nguyen TP, Faulques E, Molinié P. Erratum: XPS studies of the Bi-Sr-Ca-Cu-O ceramics at temperatures near Tc. Phys Rev B Condens Matter 1994; 49:6436. [PMID: 10021615 DOI: 10.1103/physrevb.49.6436.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Liégeois JF, Rogister FA, Bruhwyler J, Damas J, Nguyen TP, Inarejos MO, Chleide EM, Mercier MG, Delarge JE. Pyridobenzoxazepine and pyridobenzothiazepine derivatives as potential central nervous system agents: synthesis and neurochemical study. J Med Chem 1994; 37:519-25. [PMID: 7907148 DOI: 10.1021/jm00030a011] [Citation(s) in RCA: 79] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
In order to characterize the pharmacological profile of the different chemical classes of pyridobenzazepine derivatives, a series of N-methylpiperazinopyrido[1,4]- and -[1,5]- benzoxa- and benzothiazepine derivatives were prepared. The affinities for D2, D1, 5-HT2, and cholinergic (M) receptors were measured. In comparison to dibenzazepine reference compounds, a strong decrease of the affinities was observed, less pronounced, however, for the substituted analogues. Oxazepine and thiazepine analogues like clozapine (except 8-chloro-6-(4-methylpiperazin-1-yl)-pyrido[2,3-b][1,4]benzoxazepin e (9) and 8-chloro-6-(4-methylpiperazin-1-yl)pyrido[2,3-b][1,4]- benzothiazepine (11)) were found to be inactive against apomorphine stereotypies. In the open-field test in rats, different molecules showed a high disinhibitory activity as observed with anxiolytic drugs. Moreover, 8-chloro-5-(4-methylpiperazin-1-yl)pyrido[2,3-b][1,5]benzoxazepine (14) presented a clozapine-like profile that was confirmed in the behavioral model in dogs and showed most of the behavioral characteristics described for antipsychotic drugs. Its neurochemical profile, in particular the 5-HT2/D2 ratio, was also compatible with atypical antipsychotic activity.
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Affiliation(s)
- J F Liégeois
- Laboratory of Medicinal Chemistry, University of Liège, Belgium
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Abstract
We report the cloning and characterization of two outer surface proteins (Osps), designated OspE and OspF, from strain N40 of Borrelia burgdorferi, the spirochetal agent of Lyme disease. The ospE and ospF genes are structurally arranged in tandem as one transcriptional unit under the control of a common promoter. The ospE gene, located at the 5' end of the operon, is 513 nucleotides in length and encodes a 171-amino-acid protein with a calculated molecular mass of 19.2 kDa. The ospF gene, located 27 bp downstream of the stop codon of the ospE gene, consists of 690 nucleotides and encodes a protein of 230 amino acids with a calculated molecular mass of 26.1 kDa. Pulsed-field gel electrophoresis showed that the ospE and ospF genes are located on a 45-kb plasmid. Comparison of the leader sequences of OspE and OspF with those of the four known B. burgdorferi Osps (OspA, OspB, OspC, and OspD) reveals a hydrophobic domain and a consensus cleavage sequence (L-X-Y-C) recognized by signal peptidase II, and [3H]palmitate labeling shows that OspE and OspF are lipoproteins. Immunofluorescence studies demonstrated that both the OspE and OspF proteins are surface exposed. These features are consistent with the finding that OspE and OspF are B. burgdorferi surface lipoproteins.
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Affiliation(s)
- T T Lam
- Section of Immunobiology, Howard Hughes Medical Institute, New Haven, Connecticut
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Nguyen TP, Faulques E, Molinié P. XPS studies of the Bi-Sr-Ca-Cu-O ceramics at temperatures near Tc. Phys Rev B Condens Matter 1993; 48:12989-12992. [PMID: 10007675 DOI: 10.1103/physrevb.48.12989] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Liégeois JF, Bruhwyler J, Damas J, Nguyen TP, Chleide EM, Mercier MG, Rogister FA, Delarge JE. New pyridobenzodiazepine derivatives as potential antipsychotics: synthesis and neurochemical study. J Med Chem 1993; 36:2107-14. [PMID: 8101877 DOI: 10.1021/jm00067a009] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The discovery of a new, safe, atypical antipsychotic remains an important challenge. To achieve this goal, a series of N-methylpiperazinopyrido[2,3-b] [1,4]- and -[1,5]- and -pyrido[4,3-b][1,4]- and -[1,5]- benzodiazepines were synthesized. The dopaminergic (D1, D2), serotonergic (5-HT2), and cholinergic (M) affinities, frequently remarked in the action mechanisms of antipsychotic drugs, were determined using their respective in vitro receptor binding assays. All affinities were reduced for each compound. Optimal substituents were found to be in the 2- or 8-position for the retention of affinities, while substitution at the 5-position by acyl or alkyl groups dramatically diminished binding affinities. Pyridobenzodiazepine derivatives, such as clozapine, were found to be inactive or only weakly effective against apomorphine-mediated stereotypes in rats. In an original and complex behavioral model developed in dogs and successfully used to differentiate distinct classes of psychotropic drugs and to discriminate between typical and atypical neuroleptic drugs, 8-chloro-6-(4-methyl-1-piperazinyl)-11H-pyrido[2,3-b] [1,4]benzodiazepine (9), 8-methyl-6-(4-methyl-1-piperazinyl)-11H-pyrido [2,3-b][1,4]benzodiazepine (12), and 5-(4-methyl-1-piperazinyl)-11H-pyrido[2,3-b][1,5]benzodiazepine (16) showed most of the behavioral characteristics previously described for neuroleptics. Their neurochemical profiles, particularly their 5-HT2/D2 pKi ratios, were compatible with an atypical antipsychotic effect. These compounds were selected for further investigation. The proposed modulations could lead to new possibilities for the pharmacochemistry of diarylazepines.
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Affiliation(s)
- J F Liégeois
- Laboratory of Medicinal Chemistry, University of Liège, Belgium
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Nguyen TP, Kmiec EB. In vitro transcription of the c-myc first exon may be influenced by the extent of chromatin assembly. Mol Cell Biochem 1993; 120:33-41. [PMID: 8459802 DOI: 10.1007/bf00925982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The first exon of the human c-myc gene can be transcribed by either RNA polymerase II or RNA polymerase III. The molecular factors contributing to polymerase selection are not yet completely defined. We have examined the role of chromatin structure in regulating transcription by RNA polymerase III. Using as competitor a pol III gene in both a cis and trans arrangement, we demonstrate that c-myc gene expression is facilitated from templates containing a minimal number of fully assembled nucleosomes. The removal of excess histones by DNA titration leads to an elevated level of c-myc expression. These results suggest that either the c-myc expression is inhibited when the template is fully packaged into chromatin or that the affinity of RNA polymerase for the regulatory elements of this exon is such that a template, devoid of histones, is required for transcriptional initiation.
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Affiliation(s)
- T P Nguyen
- Jefferson Cancer Institute, Thomas Jefferson School of Medicine, Philadelphia, Pennsylvania 19107
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Anderson KP, Lie YS, Low MA, Williams SR, Fennie EH, Nguyen TP, Wurm FM. Presence and transcription of intracisternal A-particle-related sequences in CHO cells. J Virol 1990; 64:2021-32. [PMID: 2109099 PMCID: PMC249357 DOI: 10.1128/jvi.64.5.2021-2032.1990] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
We have characterized sequences expressed in Chinese hamster ovary (CHO) cells which are related to the intracisternal A-particle (IAP) genes of mice and Syrian hamsters. Several cDNA clones homologous to Syrian hamster IAP probes have been isolated and used to evaluate the abundance and expression of these retroviruslike sequences. DNA blot analysis with homologous Chinese hamster IAP probes revealed that IAP-related sequences are present in CHO cell DNA at moderately repetitive levels (approximately 300 copies per haploid genome). Sequence analysis has revealed the existence of at least two distinct families of IAP-related sequences in CHO cell DNA. Family I sequences exhibit identical 4.5-kilobase-pair internal deletions relative to complete IAP genomes of mice or Syrian hamsters, but family II sequences showed no major sequence discontinuities relative to the IAP genes of other species. Both families are expressed as abundant cytoplasmic RNA in CHO cells, but only family II sequences produce abundant transcripts of a size consistent with that of a full-length IAP RNA. Intact gag, pol, or env open reading frames were not present in sequences of either family, although incomplete open reading frames spanning putative p27 and protease regions of IAP genes were observed.
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Affiliation(s)
- K P Anderson
- Department of Medicinal Chemistry, Genentech, Inc., South San Francisco, California 94080
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De Backer R, Nguyen TP. [Angiographic study of a case of cystoadenoma of the pancreas]. J Belge Radiol 1982; 65:49-52. [PMID: 7130124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Nguyen TP, Ecarlat B, Rouleau P, Barsotti J. [The contribution of phlebography to the detection and the prevention of deep venous thrombosis in patients with leg trauma (author's transl)]. Ann Radiol (Paris) 1976; 19:609-16. [PMID: 1015766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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