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Zan S, Contessa L, Varetto G, Barra C, Conforti M, Casella F, Rispoli P. Radiofrequency minimally invasive endovascular treatment of lower limbs varicose veins: clinical experience and literature review. Minerva Cardioangiol 2007; 55:443-58. [PMID: 17653021] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
AIM Varicose veins of the legs are a common condition affecting 10-15% of men and 20-25% of women in the western world. This high prevalence is responsible of high medical and social costs. Most primary varices are associated with greater saphenous vein (GSV) incompetence. A new method, radiofrequency (RF) endovenous obliteration (VNUS-Closure'' procedure), recently has been described as a less invasive and cost-saving alternative to stripping for the treatment of refluxing GSV. METHODS Twenty-four patients with varicose veins underwent endovenous obliteration of the above knee GSV by VNUS Closure'' procedure. The vein diameters were from 5 to 10 mm. The RF catheter was inserted via percutaneous puncture or through a small skin incision. All operations were performed in local, tumescent anesthesia, under ultrasound guidance. All patients were discharged 2 h after operation. Clinical and ultrasound follow-up was performed at 1 week, and at 1, 6, 12, 24 months. RESULTS The complete or partial occlusion of the treated segment of the GSV has been achieved in 23 cases. In only one patient persisting patency of the GSV was immediately detected after the procedure. That was successfully treated by ultrasound guided foam sclerotherapy. All patients could resume all normal activities within 3-5 days. Every patient had reduction of varicosities, leg pain, fatigue and oedema. Adverse sequelae were minimal: 2 patients had transient thigh paresthesias. We didn't report deep venous thrombosis or pulmonary embolism (mean follow-up 26.7 months, range 15-33 months). CONCLUSION A literature review and the authors'experience reveal that, in absence of significant complications, such as deep vein thrombosis and pulmonary embolism, there are significant advantages in the RF endovascular obliteration of the GSV. In effect, the Closure'' procedure, in selected patients, offers reduced postoperative pain, shorter sick leaves, faster return to normal activities compared with vein stripping, and it appears to be cost-saving for society. The mid-term (36 months) recurrence rates after RF obliteration seem to be similar to the results of the conventional surgical management.
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Affiliation(s)
- S Zan
- Unit of Vascular Surgery, S.Giovanni Battista Hospital, University of Turin, Turin, Italy
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Alvarez J, del Barrio MR, Arias J, González M, Córdoba L, Moreno F, Corpas R, Nieto M, Iglesias J, Corral E, Barra C, Elvira J, Ibarguren C. Five years of experience with non-heart-beating donors coming from the streets. Transplant Proc 2002; 34:2589-90. [PMID: 12431535 DOI: 10.1016/s0041-1345(02)03436-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- J Alvarez
- Transplant Coordination, Hospital Clinico San Carlos, Madrid, Spain.
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Affiliation(s)
- J Alvarez
- Coordinación de Trasplantes, Hospital Clínico San Carlos, España, Madrid, Spain
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Alvarez J, Del Barrio R, Arias J, Cuesta C, Crespo P, Bilbao J, Soria L, Barra C, Iglesias J, Elvira J. Non-heart-beating donors and emergency health care systems. Transplant Proc 1999; 31:2215-6. [PMID: 10500550 DOI: 10.1016/s0041-1345(99)00311-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- J Alvarez
- Hospital Clinico San Carlos, Madrid, Spain.
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Porter JB, Abeysinghe RD, Hoyes KP, Barra C, Huehns ER, Brooks PN, Blackwell MP, Araneta M, Brittenham G, Singh S. Contrasting interspecies efficacy and toxicology of 1,2-diethyl-3-hydroxypyridin-4-one, CP94, relates to differing metabolism of the iron chelating site. Br J Haematol 1993; 85:159-68. [PMID: 8251385 DOI: 10.1111/j.1365-2141.1993.tb08660.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [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]
Abstract
In order to define a predictive animal model for the effects of hydroxypyridinone (HPO) iron chelators in humans, we have compared the 28 d oral efficacy and toxicology of the HPO, 1,2-diethyl-3-hydroxypyridin-4-one (CP94) in rats and guinea-pigs and related the results to the contrasting metabolism of this compound in the two species. CP94 was highly effective at mobilizing liver iron in rats but showed toxicity at higher doses, whereas in the guinea-pig the compound lacked toxicity but was ineffective at mobilizing liver iron. These differences can be explained by the contrasting metabolism of the drug between the two species. In rats, at the top dose of 300 mg/kg intragastrically, all animals died before the end of the study, with no deaths or weight loss at lower doses. At 100 mg/kg, rat liver non-haem iron concentrations were reduced by 53% and 44% in females and males respectively (P < 0.001). At this dose, adrenal medullary cell vacuolation, increased mammary secretory activity, vacuolation of corpora luteal cells and single cell hepatocyte necrosis were seen. There were no reductions in the white cell count. At 50 mg/kg rat liver non-haem iron concentrations were decreased by 50% and 34% in females and males respectively (P < 0.02). In female rats this was associated with increased mammary secretory activity. In iron-overloaded rats given 100 mg/kg by gavage for 28 d, liver non-haem iron concentration was reduced by 39% (P < 0.01) and serum ferritin by 71% (P < 0.001). Ovarian and mammary changes were not influenced by iron loading. In guinea-pigs, CP94 was evaluated at 50 mg/kg, 100 mg/kg or 200 mg/kg by oral insufflation for 28 d. No reduction in liver iron was seen and no systematic dose related histological, biochemical or haematological effects were observed. Whereas in guinea-pigs 99% of urinary recovery following an oral dose of CP94 (100 mg/kg) was as the inactive glucuronide metabolite, in the rat only 23% of the dose was excreted in the urine as the glucuronide with remainder as the free drug or an iron binding metabolite. The lack of both efficacy and toxicity in the guinea-pig may therefore be explained by the rapid inactivation of CP94 by glucuronidation. This metabolism of CP94 in the guinea-pig is closer to humans than the rat, suggesting that both the efficacy and toxicity of this compound in humans may also be limited by glucuronidation.
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Affiliation(s)
- J B Porter
- Department of Haematology, University College London
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Barra C, Gournier H, Garcia Z, Marche PN, Jouvin-Marche E, Briand P, Fillipi P, Lemonnier FA. Abrogation of H-2-restricted CTL responses and efficient recognition of HLA-A3 molecules in DBA/2 HLA/A24 responder mice. The Journal of Immunology 1993. [DOI: 10.4049/jimmunol.150.9.3681] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
DBA/2 (H-2d) HLA-B7 x human beta 2-microglobulin transgenic and DBA/2 nontransgenic mice stimulated by DBA/2 HLA-A3 x human beta 2-microglobulin transgenic mouse spleen cells developed potent H-2Kd restricted cytolytic responses with recognition of a peptide from the second domain of the HLA-A3 H chain. These H-2Kd-restricted responses obliterated, as a rule, cytolytic responses with direct recognition of the HLA-A3 molecules, even in HLA-B7 transgenic mice. These immunodominant H-2Kd-restricted responses could be abrogated in DBA/2 HLA-A24 mice because of cross-tolerance, the HLA-A3 derived-H-2Kd presented peptide being shared by several (including A24) HLA class I H chain allelic variants. Under such experimental circumstances, strong CTL responses with exclusive direct recognition of HLA-A3 molecules constantly developed. Further analysis of these responses in six DBA/2 HLA-A24 responder mice indicated that a large fraction of the mouse V beta and V alpha genes could be used to mount such CTL responses. Thus, by combining classical HLA class I transgenesis and selective destruction of H-2K and H-2D genes, it should be possible to derive useful strains of mice for the study of HLA class I-restricted CTL responses.
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Affiliation(s)
- C Barra
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, Marseille, France
| | - H Gournier
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, Marseille, France
| | - Z Garcia
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, Marseille, France
| | - P N Marche
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, Marseille, France
| | - E Jouvin-Marche
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, Marseille, France
| | - P Briand
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, Marseille, France
| | - P Fillipi
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, Marseille, France
| | - F A Lemonnier
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, Marseille, France
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Barra C, Gournier H, Garcia Z, Marche PN, Jouvin-Marche E, Briand P, Fillipi P, Lemonnier FA. Abrogation of H-2-restricted CTL responses and efficient recognition of HLA-A3 molecules in DBA/2 HLA/A24 responder mice. J Immunol 1993; 150:3681-9. [PMID: 7682582] [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: 01/26/2023]
Abstract
DBA/2 (H-2d) HLA-B7 x human beta 2-microglobulin transgenic and DBA/2 nontransgenic mice stimulated by DBA/2 HLA-A3 x human beta 2-microglobulin transgenic mouse spleen cells developed potent H-2Kd restricted cytolytic responses with recognition of a peptide from the second domain of the HLA-A3 H chain. These H-2Kd-restricted responses obliterated, as a rule, cytolytic responses with direct recognition of the HLA-A3 molecules, even in HLA-B7 transgenic mice. These immunodominant H-2Kd-restricted responses could be abrogated in DBA/2 HLA-A24 mice because of cross-tolerance, the HLA-A3 derived-H-2Kd presented peptide being shared by several (including A24) HLA class I H chain allelic variants. Under such experimental circumstances, strong CTL responses with exclusive direct recognition of HLA-A3 molecules constantly developed. Further analysis of these responses in six DBA/2 HLA-A24 responder mice indicated that a large fraction of the mouse V beta and V alpha genes could be used to mount such CTL responses. Thus, by combining classical HLA class I transgenesis and selective destruction of H-2K and H-2D genes, it should be possible to derive useful strains of mice for the study of HLA class I-restricted CTL responses.
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Affiliation(s)
- C Barra
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, Marseille, France
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Casanova JL, Martinon F, Gournier H, Barra C, Pannetier C, Regnault A, Kourilsky P, Cerottini JC, Maryanski JL. T cell receptor selection by and recognition of two class I major histocompatibility complex-restricted antigenic peptides that differ at a single position. J Exp Med 1993; 177:811-20. [PMID: 8436911 PMCID: PMC2190943 DOI: 10.1084/jem.177.3.811] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Peptides derived from HLA-Cw3 and HLA-A24 within region 170-179 differ by a single substitution, at position 173, and are both presented by the class I major histocompatibility complex molecule H-2Kd for recognition by murine cytolytic T lymphocytes (CTLs). As a first approach to understand the way T cell receptors (TCRs) intact with the HLA peptides, we have analyzed the TCR selection by, and recognition of, the two HLA antigenic sites. First, we have compared the TCR repertoires selected by HLA-Cw3 and HLA-A24, not only by sequencing the TCRs carried by CTL clones isolated and grown in vitro, but also by analyzing the TCRs expressed in vivo by peritoneal exudate lymphocytes from immune animals. Second, we have compared the TCR crossrecognition of HLA-A24 by CTLs selected by HLA-Cw3 with that of HLA-Cw3 by CTLs selected by HLA-A24. The combined analysis of TCR selection by and recognition of these two related HLA antigenic sites provides evidence that the TCR beta junctional regions interact with the amino-terminal part of the HLA peptides.
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MESH Headings
- Amino Acid Sequence
- Animals
- Base Sequence
- Cell Line
- DNA/analysis
- DNA/genetics
- HLA-A Antigens/analysis
- HLA-A Antigens/genetics
- HLA-A Antigens/immunology
- HLA-A24 Antigen
- HLA-C Antigens/analysis
- HLA-C Antigens/genetics
- HLA-C Antigens/immunology
- Histocompatibility Antigens Class I/analysis
- Histocompatibility Antigens Class I/genetics
- Histocompatibility Antigens Class I/immunology
- Major Histocompatibility Complex/genetics
- Major Histocompatibility Complex/immunology
- Mice
- Molecular Sequence Data
- Peritoneum/cytology
- Polymerase Chain Reaction
- Receptors, Antigen, T-Cell/analysis
- Receptors, Antigen, T-Cell/genetics
- Receptors, Antigen, T-Cell/immunology
- Receptors, Antigen, T-Cell, alpha-beta/analysis
- Receptors, Antigen, T-Cell, alpha-beta/genetics
- Receptors, Antigen, T-Cell, alpha-beta/immunology
- T-Lymphocytes/chemistry
- T-Lymphocytes/immunology
- T-Lymphocytes/ultrastructure
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Affiliation(s)
- J L Casanova
- Ludwig Institute for Cancer Research, Lausanne Branch, Epalinges, Switzerland
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9
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Casanova JL, Cerottini JC, Matthes M, Necker A, Gournier H, Barra C, Widmann C, MacDonald HR, Lemonnier F, Malissen B, Maryanski JL. H-2-restricted cytolytic T lymphocytes specific for HLA display T cell receptors of limited diversity. J Exp Med 1992; 176:439-47. [PMID: 1380061 PMCID: PMC2119306 DOI: 10.1084/jem.176.2.439] [Citation(s) in RCA: 82] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
We previously showed that H-2Kd-restricted cytotoxic T lymphocyte (CTL) clones specific for a single nonapeptide derived from the Plasmodium berghei circumsporozoite (PbCS) protein displayed T cell receptors (TCRs) of highly diverse primary structure. We have now analyzed the TCR repertoire of CTLs that recognize a peptide derived from the human class I major histocompatibility complex (MHC) molecule HLA-Cw3 in association with the same murine class I MHC molecule H-2Kd. We first sequenced the TCR alpha and beta genes of the CTL clone Cw3/1.1 and, based on this genomic analysis, the TCR alpha and beta cDNA junctional regions of 23 independent H-2Kd-restricted CTL clones specific for HLA-Cw3. The results show that the TCR chains display very limited heterogeneity, both in terms of V alpha, J alpha, V beta, and J beta segments, and in terms of length and sequence of the CDR3 alpha and beta loops. The TCR repertoire used in vivo was then analyzed by harvesting CTL populations from the peritoneal cavity of immune mice. The peritoneal exudate lymphocytes (PELs) displayed HLA-Cw3-specific cytolytic activity in the absence of any stimulation in vitro. Remarkably, most of these freshly isolated PELs expressed TCRs that shared the same structural features as those from HLA-Cw3-reactive CTL clones. Thus, our results show that a peptide from HLA-Cw3 presented by H-2Kd selects CTLs that bear TCRs of very limited diversity in vivo. When taken together with the high diversity of the TCRs specific for the PbCS peptide, these findings suggest that natural tolerance to self peptides presented by class I MHC molecules may substantially reduce the size of the TCR repertoire of CTLs specific for antigenic peptides homologous to self.
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Affiliation(s)
- J L Casanova
- Ludwig Institute for Cancer Research, Lausanne Branch, Epalinges, Switzerland
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10
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Barra C, Pérarnau B, Gerlinger P, Lemeur M, Gillet A, Gibier P, Lemonnier FA. Analysis of the HLA-Cw3-specific cytotoxic T lymphocyte response of HLA-B7 X human beta 2m double transgenic mice. J Immunol 1989; 143:3117-24. [PMID: 2478616] [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: 01/01/2023]
Abstract
The cytolytic responses of either normal (non transgenic), HLA-B7 (single transgenic) or HLA-B7 x human beta 2 microglobulin (double transgenic) DBA/2 mice induced by transfected HLA-Cw3 P815 (H-2d) mouse mastocytoma cells were compared, to evaluate whether the expression of an HLA class I molecule in responder mice would favor the emergence of HLA-specific, H-2-unrestricted CTL. Only 8 of 300 HLA-Cw3-specific CTL clones tested could selectively lyse HLA-Cw3-transfected cells in an H-2-unrestricted manner, all having been isolated after hyperimmunization of double transgenic mice. These clones also lysed HLA-Cw3+ human cells. Unexpectedly, the lysis of the human but not that of the murine HLA-Cw3 cells was inhibited by Ly-2,3-specific mAb. Despite significant expression of HLA-B7 class I molecules on transgenic lymphoid cells, including thymic cells, limiting dilution analysis and comparative study of TCR-alpha and -beta gene rearrangements of the eight isolated clones (which suggested that they all derived from the same CTL precursor) indicated that the frequency of HLA-Cw3-specific H-2 unrestricted cytotoxic T lymphocytes remained low (even in HLA-B7 x human beta 2-microglobulin double transgenic mice). This suggests that coexpression of HLA class I H and L chain in transgenic mice is not the only requirement for significant positive selection of HLA class I-restricted cytotoxic mouse T lymphocytes.
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MESH Headings
- Animals
- Antibodies, Monoclonal/pharmacology
- Antigens, Ly/immunology
- Binding, Competitive
- Cell Separation
- Clone Cells/analysis
- Cricetinae
- Cytotoxicity Tests, Immunologic
- Epitopes/genetics
- Epitopes/immunology
- Gene Rearrangement, T-Lymphocyte
- H-2 Antigens/genetics
- H-2 Antigens/immunology
- HLA-B7 Antigen/genetics
- HLA-B7 Antigen/immunology
- HLA-C Antigens/genetics
- HLA-C Antigens/immunology
- Humans
- Lymphocytes/analysis
- Male
- Mice
- Mice, Inbred BALB C
- Mice, Inbred DBA
- Mice, Transgenic/genetics
- Mice, Transgenic/immunology
- Receptors, Antigen, T-Cell/genetics
- T-Lymphocytes, Cytotoxic/immunology
- T-Lymphocytes, Cytotoxic/metabolism
- Thymus Gland/analysis
- beta 2-Microglobulin/genetics
- beta 2-Microglobulin/immunology
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Affiliation(s)
- C Barra
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, France
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11
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Barra C, Pérarnau B, Gerlinger P, Lemeur M, Gillet A, Gibier P, Lemonnier FA. Analysis of the HLA-Cw3-specific cytotoxic T lymphocyte response of HLA-B7 X human beta 2m double transgenic mice. The Journal of Immunology 1989. [DOI: 10.4049/jimmunol.143.10.3117] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
The cytolytic responses of either normal (non transgenic), HLA-B7 (single transgenic) or HLA-B7 x human beta 2 microglobulin (double transgenic) DBA/2 mice induced by transfected HLA-Cw3 P815 (H-2d) mouse mastocytoma cells were compared, to evaluate whether the expression of an HLA class I molecule in responder mice would favor the emergence of HLA-specific, H-2-unrestricted CTL. Only 8 of 300 HLA-Cw3-specific CTL clones tested could selectively lyse HLA-Cw3-transfected cells in an H-2-unrestricted manner, all having been isolated after hyperimmunization of double transgenic mice. These clones also lysed HLA-Cw3+ human cells. Unexpectedly, the lysis of the human but not that of the murine HLA-Cw3 cells was inhibited by Ly-2,3-specific mAb. Despite significant expression of HLA-B7 class I molecules on transgenic lymphoid cells, including thymic cells, limiting dilution analysis and comparative study of TCR-alpha and -beta gene rearrangements of the eight isolated clones (which suggested that they all derived from the same CTL precursor) indicated that the frequency of HLA-Cw3-specific H-2 unrestricted cytotoxic T lymphocytes remained low (even in HLA-B7 x human beta 2-microglobulin double transgenic mice). This suggests that coexpression of HLA class I H and L chain in transgenic mice is not the only requirement for significant positive selection of HLA class I-restricted cytotoxic mouse T lymphocytes.
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Affiliation(s)
- C Barra
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, France
| | - B Pérarnau
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, France
| | - P Gerlinger
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, France
| | - M Lemeur
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, France
| | - A Gillet
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, France
| | - P Gibier
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, France
| | - F A Lemonnier
- Centre d'Immunologie INSERM-CNRS de Marseille-Luminy, France
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12
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Kahn-Perles B, Barra C, Jehan J, Fourel D, Barad M, Maryanski JL, Lemonnier FA. Cytotoxic T lymphocyte recognition of secreted HLA class I molecules. The Journal of Immunology 1989. [DOI: 10.4049/jimmunol.142.9.3021] [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] [Indexed: 01/01/2023]
Abstract
Abstract
The cytolytic responses of DBA/2 mice against syngeneic transfected P815 mastocytoma cells expressing either membrane-associated (HLA-Cw3) or -secreted hybrid (HLA-Cw3 x H-2 Q10b) molecules were compared. In spite of the absence of serologically detectable hybrid molecules on their plasma membrane, cells secreting these molecules elicited a CTL response similar to that of cells expressing the membrane associated HLA-Cw3 molecules, in terms of both MHC-restriction and peptide specificity. Together with the observation that syngeneic mice were capable of rejecting the injected secreting cells, these results imply that secreted HLA class I molecules can function as minor histocompatibility Ag and suggest that processing of both the membrane-bound and the -secreted forms of a protein may follow common or overlapping pathways.
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Affiliation(s)
| | - C Barra
- Centre d'Immunologie de Marseille-Luminy, France
| | - J Jehan
- Centre d'Immunologie de Marseille-Luminy, France
| | - D Fourel
- Centre d'Immunologie de Marseille-Luminy, France
| | - M Barad
- Centre d'Immunologie de Marseille-Luminy, France
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13
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Kahn-Perles B, Barra C, Jehan J, Fourel D, Barad M, Maryanski JL, Lemonnier FA. Cytotoxic T lymphocyte recognition of secreted HLA class I molecules. J Immunol 1989; 142:3021-5. [PMID: 2468709] [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: 01/01/2023]
Abstract
The cytolytic responses of DBA/2 mice against syngeneic transfected P815 mastocytoma cells expressing either membrane-associated (HLA-Cw3) or -secreted hybrid (HLA-Cw3 x H-2 Q10b) molecules were compared. In spite of the absence of serologically detectable hybrid molecules on their plasma membrane, cells secreting these molecules elicited a CTL response similar to that of cells expressing the membrane associated HLA-Cw3 molecules, in terms of both MHC-restriction and peptide specificity. Together with the observation that syngeneic mice were capable of rejecting the injected secreting cells, these results imply that secreted HLA class I molecules can function as minor histocompatibility Ag and suggest that processing of both the membrane-bound and the -secreted forms of a protein may follow common or overlapping pathways.
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14
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Salazar T, Barrera F, Capurro MT, Barra C, Salinas A, Novoa F. [Serum concentrations of phenobarbital and the metabolism of calcium and phosphorus in children]. Rev Chil Pediatr 1984; 55:407-10. [PMID: 6536993] [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: 01/20/2023]
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15
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González R, Murillo A, Girardi G, Zúñiga J, Burdach R, Varas A, Boza L, Cortés E, Barros C, Barra C. [Bronchial asthma in children (results of 2 years of treatment in 265 cases)]. Rev Chil Pediatr 1982; 53:324-30. [PMID: 7163541] [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: 01/23/2023]
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