51
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Mascia L, Hitchcock GR, Valenza A. Effects of sodium concentration on the morphology and rheological behaviour of alkoxide-carboxylate co-ionomeric mixtures of phenoxy and ethylene terpolymers. Colloid Polym Sci 1994. [DOI: 10.1007/bf00658843] [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: 10/26/2022]
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52
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Valenza A, Gallo L, Spadaro G, Calderaro E, Acierno D. Mechanical properties-structure relationship in blends of polyamide 6 with γ-irradiated LDPE. POLYM ENG SCI 1993. [DOI: 10.1002/pen.760332006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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53
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La Mantia FP, Valenza A, Paci M, Magagnini PL, Pedretti U, Roggero A. Rheological behavior of a semirigid liquid crystal polymer. POLYM ENG SCI 1993. [DOI: 10.1002/pen.760331503] [Citation(s) in RCA: 14] [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: 11/11/2022]
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54
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Affiliation(s)
- M Clementi
- Institute of Microbiology, University of Ancona, Italy
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55
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Gattiglia E, Turturro A, Lamantia FP, Valenza A. Blends of polyamide 6 and bisphenol-A polycarbonate. Effects of interchange reactions on morphology and mechanical properties. J Appl Polym Sci 1992. [DOI: 10.1002/app.1992.070461102] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.3] [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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57
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Bagnarelli P, Menzo S, Valenza A, Manzin A, Giacca M, Ancarani F, Scalise G, Varaldo PE, Clementi M. Molecular profile of human immunodeficiency virus type 1 infection in symptomless patients and in patients with AIDS. J Virol 1992; 66:7328-35. [PMID: 1433521 PMCID: PMC240437 DOI: 10.1128/jvi.66.12.7328-7335.1992] [Citation(s) in RCA: 96] [Impact Index Per Article: 3.0] [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: 12/27/2022] Open
Abstract
Recent molecular evidence indicates that active human immunodeficiency virus type 1 (HIV-1) infection is detectable in both symptomless and symptomatic infected patients. For this main reason, it has been pointed out that precise quantitative analysis of viral activity in vivo is necessary, firstly, for the pathogenetic investigation of the steps relevant to infection progression and, secondly, for better clinical management of HIV-1-infected patients. In this study, the presence of HIV-1 genomic RNA in plasma samples, specific HIV-1 transcripts in peripheral blood mononuclear cells, and proviral DNA sequences were assayed for 33 HIV-1-infected patients (including symptomless and symptomatic subjects) by using a competitive polymerase chain reaction method that allows quantitation of the RNA/DNA target sequences. The quantitative results obtained confirm that transcription of HIV-1 structural genes and complete viral replication occur in all the HIV-1-infected patients independently of the clinical stage. However, although sharp individual differences were detected, a high degree of correlation of the molecular parameters studied with both disease progression and a decrease in the number of CD4+ T lymphocytes was documented. Interestingly, despite the increasing viremia level associated with infection progression, the mean transcriptional activity of individual infected cells was found to be only moderately greater in AIDS patients than in asymptomatic infected subjects. In addition, it was noted that quantitation of HIV-1 genomic RNA in plasma samples and quantitation of specific HIV-1 transcripts in peripheral blood mononuclear cells appear to be more reliable and sensitive markers of viral activity than quantitative analysis of proviral HIV-1 sequences in peripheral lymphocytes.
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MESH Headings
- Acquired Immunodeficiency Syndrome/blood
- Acquired Immunodeficiency Syndrome/microbiology
- Acquired Immunodeficiency Syndrome/physiopathology
- Adult
- CD4 Antigens/analysis
- DNA, Viral/blood
- DNA, Viral/isolation & purification
- Female
- Genes, gag
- Genome, Viral
- HIV Seropositivity/blood
- HIV Seropositivity/microbiology
- HIV Seropositivity/physiopathology
- HIV-1/genetics
- HIV-1/isolation & purification
- Humans
- Lymphocytes/immunology
- Male
- Polymerase Chain Reaction/methods
- Proviruses/genetics
- Proviruses/isolation & purification
- RNA, Messenger/blood
- RNA, Messenger/genetics
- RNA, Messenger/isolation & purification
- RNA, Viral/blood
- RNA, Viral/genetics
- RNA, Viral/isolation & purification
- Time Factors
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Affiliation(s)
- P Bagnarelli
- Institute of Microbiology, University of Ancona Medical School, Italy
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58
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Spadaro G, Acierno D, Calderaro E, Valenza A. Structural induced modifications in blends of polyamide with gamma irradiated low density polyethylene. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/1359-0197(92)90033-c] [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: 11/17/2022]
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59
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60
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61
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Yongcheng Y, La Mantia F, Valenza A, Città V, Pedretti U, Roggero A. Characterization of blends of polypropylene with a semirigid liquid-crystal copolyester. Eur Polym J 1991. [DOI: 10.1016/0014-3057(91)90164-j] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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62
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63
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La Mantia F, Saiu M, Valenza A, Paci M, Magagnini P. Relationships between mechanical properties and structure for blends of nylon-6 with a liquid crystal polymer. Eur Polym J 1990. [DOI: 10.1016/0014-3057(90)90248-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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64
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65
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La Mantia FP, Valenza A, Paci M, Magagnini PL. Liquid crystal polymers (LCP) as processing aids and reinforcing agents. A study of nylon 6/LCP blends. J Appl Polym Sci 1989. [DOI: 10.1002/app.1989.070380318] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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66
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Grisvard J, Guille E, Sasaki I, Sissoeff I, Valenza A, Apelgot S, Coppey J, Gaudemer A. Biochemical studies of human (A549) and simian (CV1) cells labeled with 64Cu, 67Cu, and 125IUdR. Biol Trace Elem Res 1989; 20:207-24. [PMID: 2484754 DOI: 10.1007/bf02917436] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
CV1 and A549 cells were grown in the presence of 64Cu porphyric complex, 64CuCl2, or 67CuCl2. Radioactive copper determinations were performed on whole cells and on isolated cellular DNA. 125IUdR was used to calibrate the particular extraction and purification procedures we developed because of the half-lives of 64Cu and 67Cu. The results obtained have shown that some radioactive copper atoms remained firmly bound to the DNA molecule. Their amount was of the same order when using two different DNA isolation methods for the two cell lines studied. No significant differences were found when 64Cu was used as CuCl2 or as porphyric complex.
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Affiliation(s)
- J Grisvard
- Université Paris-Sud, Biologie Moléculaire Végétale (UA 1128) Orsay, France
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67
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68
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Affiliation(s)
- A. Valenza
- Istituto di Ingegneria Chimica, University of Palermo, Palermo, Italy
| | - F. P. La Mantia
- Istituto di Ingegneria Chimica, University of Palermo, Palermo, Italy
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72
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La Mantia F, Valenza A, Acierno D. Influence of the structure of linear density polyethylene on the rheological and mechanical properties of blends with low density polyethylene. Eur Polym J 1986. [DOI: 10.1016/0014-3057(86)90163-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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73
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74
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75
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76
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La Mantia F, Valenza A, Acierno D. Thermomechanical degradation of blends of isotactic polypropylene and high density polyethylene. Polym Degrad Stab 1985. [DOI: 10.1016/0141-3910(85)90130-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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77
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78
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