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2.
Encephale ; 35(2): 146-51, 2009 Apr.
Artículo en Francés | MEDLINE | ID: mdl-19393383

RESUMEN

INTRODUCTION: Each cancer can have a psychological impact not only on the patient himself/herself, but also on his/her spouse. OBJECTIVE: Our study concerned 30 couples encompassing a member treated for a cancer, non related to gender. It was aimed at determining the links between the levels of psychosocial distress measured in both members of each couple, patients' sociodemographic and clinical characteristics, as well as communication skills about cancer in both members of the couples. METHODS: Psychosocial distress and communication about cancer were measured by the general health questionnaire (GHQ-28) and the openness to discuss cancer in the nuclear family (ODCF), with an additional version adapted for the spouse on the occasion of this study. RESULTS: A positive correlation was found between the respective scores of the two members of the couples, for the GHQ-28 (r=0.53; p=0.005) as well as for the ODCF (r=0.44; p=0.024). GHQ-28 scores were not associated with the sociodemographic characteristics of the patients, nor with the stage of cancer, the number of months elapsed since the diagnosis of cancer, or the ODCF personal or spouse's score. On the other hand, when the communication within each couple was classified into concordant (insufficient or, on the contrary, open for both members) or discordant (insufficient for one of the two members and open for the other), and after controlling for gender, higher levels of psychosocial distress were found in patients (p=0.038) as well in spouses (p=0.052) belonging to discordant compared with concordant couples. CONCLUSION: These results suggest an effect of contamination or a mutual reinforcement of the distress of each member of such couples, as well as the presence of relatively similar styles of communication in the two partners of each couple. They also underline the possible adaptive function of a restricted style of communication about cancer, if such a restriction is shared by both the members of the couple, and incites particular attention to be paid to couples where one of the partners, but not the other, adopt an open style of communication about cancer.


Asunto(s)
Comunicación , Neoplasias/psicología , Rol del Enfermo , Esposos/psicología , Adaptación Psicológica , Adulto , Niño , Preescolar , Composición Familiar , Conflicto Familiar/psicología , Femenino , Francia , Humanos , Masculino , Persona de Mediana Edad , Núcleo Familiar , Autorrevelación , Factores Sexuales , Encuestas y Cuestionarios
3.
Rev Neurol (Paris) ; 165(5): 493-5, 2009 May.
Artículo en Francés | MEDLINE | ID: mdl-18926551

RESUMEN

INTRODUCTION: We describe a case of insulinoma presenting as a refractory frontal lobe epilepsy in a 44-year-old man with a history of severe head trauma. CASE REPORT: Despite escalating treatment, his seizure frequency worsened during the previous year. He also developed psychomotor slowing and sweating occurring early in the morning. He gained weight. Insulinoma was diagnosed based on the presence of episodes of hypoglycemia, abnormal insulin/blood glucose ratio and a tumor in the pancreas (echo-ultrasound). After partial pancreatectomy, the patient became seizure free and anti-epileptic drugs were progressively stopped, with a follow-up of five years. CONCLUSION: Insulinoma should be considered in patients with no reason for having drug-resistant epilepsy, especially when seizures occur early in the morning or when episodes of neuropsychiatric symptoms with sweating are present.


Asunto(s)
Epilepsias Parciales/etiología , Insulinoma/diagnóstico , Adulto , Glucemia/metabolismo , Humanos , Hipoglucemia/etiología , Insulina/sangre , Insulinoma/cirugía , Masculino , Pancreatectomía , Convulsiones/epidemiología , Resultado del Tratamiento , Aumento de Peso
4.
Rev Med Interne ; 29(12): 986-93, 2008 Dec.
Artículo en Francés | MEDLINE | ID: mdl-18562047

RESUMEN

INTRODUCTION: Factors contributing to children's distress when a parent is affected with a cancer are still insufficiently known. This study aimed at searching for associations between psychosocial distress in children living with a parent suffering from cancer, the severity of parental cancer, the levels of psychosocial distress in both parents and the openness to discuss cancer in the family. METHODS: Thirty families encompassing a parent treated for cancer and 54 children aged four to 16 were examined. Each parent's psychosocial distress was assessed by the General Health Questionnaire (GHQ-28) and the distress of the children living within the family by the Child Behavior Check List (CBCL) filled out by both parents. Each parent's communication ability about cancer was assessed by the Openness to Discuss Cancer in the nuclear Family questionnaire (ODCF). RESULTS: No association was found between children's distress and objective cancer characteristics. Higher externalized disorders scores at CBCL (aggression) were found when the ill parent was the mother (P=0.018). After controlling for cancer parent's gender, CBCL total score and internalized disorders (anxiety, depression) score were higher in families characterized by an "open" style of communication, defined on the parental couple as a whole (respectively p=0.007 and 0.024), such an effect being present only when the ill parent was the mother (interaction effect: p<0.001). CONCLUSION: These results underline the importance of family characteristics for understanding the suffering observed in children living with a parent affected with a cancer in comparison with objective cancer characteristics.


Asunto(s)
Comunicación , Familia/psicología , Neoplasias/psicología , Relaciones Padres-Hijo , Estrés Psicológico , Adolescente , Adulto , Factores de Edad , Niño , Preescolar , Femenino , Humanos , Masculino , Persona de Mediana Edad , Encuestas y Cuestionarios
5.
Ann Oncol ; 18(11): 1828-33, 2007 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-17846024

RESUMEN

BACKGROUND: We evaluated the possible use of prostate-specific antigen doubling time (PSA-DT) before chemotherapy initiation as a surrogate marker of survival in hormone-refractory prostate cancer (HRPC) patients. PATIENTS AND METHODS: Data from 250 consecutive metastatic HRPC patients treated with chemotherapy between February 2000 and November 2006 were retrospectively analysed. At least three PSA assays were required within 3 months before chemotherapy. PSA-DT was calculated as ln 2 divided by the slope of the log PSA line, and the difference between two log PSA levels was divided by the time interval. The primary endpoint was overall survival (OS). Survival rates according to PSA-DT were stratified on chemotherapy regimen. Multivariate Cox regression analysis was performed to isolate the impact of PSA-DT on OS, controlling for associate prognostic covariates. RESULTS: Patients received docetaxel- (82%) or mitoxantrone-based chemotherapy. The median PSA-DT was 45 days (range 4.7-1108 days). There were 174 deaths (70%). The median survival was 16.5 months (95% confidence interval [CI] = 12.5-20.5) and 26.4 months (95% CI = 20.3-32.4) for patients with a PSA-DT < 45 and > or =45 days, respectively. In the multivariate setting, the adjusted hazard ratio (HR) was 1.39 (95% CI = 1.03-1.89; P = 0.04), stratified by chemotherapy regimen. CONCLUSION: A short PSA-DT before onset of chemotherapy in HRPC patients was associated with an increased risk of death. This could be useful as a stratification parameter in trials with new drugs in a metastatic setting.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Biomarcadores de Tumor/sangre , Antígeno Prostático Específico/sangre , Neoplasias de la Próstata/tratamiento farmacológico , Neoplasias de la Próstata/mortalidad , Anciano , Anciano de 80 o más Años , Análisis de Varianza , Antineoplásicos Hormonales/administración & dosificación , Estudios de Cohortes , Intervalos de Confianza , Resistencia a Antineoplásicos , Humanos , Inmunohistoquímica , Masculino , Persona de Mediana Edad , Análisis Multivariante , Metástasis de la Neoplasia , Estadificación de Neoplasias , Probabilidad , Pronóstico , Neoplasias de la Próstata/sangre , Neoplasias de la Próstata/patología , Estudios Retrospectivos , Medición de Riesgo , Análisis de Supervivencia , Factores de Tiempo , Resultado del Tratamiento
6.
J Intern Med ; 261(2): 123-31, 2007 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-17241177

RESUMEN

Antibody response against human immunodeficiency virus-1 (HIV) is ineffective and cellular immune response is not strong enough to achieve the complete suppression or at least a strong control of viral replication in HIV- infected patients. In 2001, we showed in vitro that dendritic cells (DCs) of HIV-infected patients loaded with autologous HIV chemically inactivated by aldrithiol-2 were capable of raising an HIV-specific cellular immune response powerful enough to allow the destruction of autologous HIV- infected CD4 T cells. In 2003, we showed that simian immunodeficiency virus (SIV)-infected macaques vaccinated with inactivated SIV-loaded autologous DCs raised a strong SIV-specific cellular response. Ten months after vaccination, plasma viral load of 7 out of the 10 vaccinated monkeys remained 1000-fold lower than initially. In December 2004, we published results observed in 18 untreated HIV-infected patients vaccinated with autologous monocyte-derived DCs loaded with autologous inactivated HIV. A year following vaccination, 8 patients had a plasma viral load decrease >90%; among them, 4 had viral load <1000 copies mL(-1). Moreover, by one year, the viral load decline of the 18 patients was significantly correlated with their percentage of HIV-1-gag-specific CD8(+) T cells expressing perforin and that of HIV-1-specific CD4(+) T(H)1 cells. This is the first demonstration of the capacity of a therapeutic vaccine to induce an effective HIV-specific T cell response associated with sustained viral suppression in untreated viremic patients. The manipulation of antigen presenting cells to elicit virus-specific cellular responses is a promising tool to control persistant viral infections.


Asunto(s)
Traslado Adoptivo/métodos , Células Dendríticas/trasplante , Infecciones por VIH/terapia , VIH-1 , Animales , Linfocitos T CD4-Positivos/inmunología , Linfocitos T CD4-Positivos/virología , Ensayos Clínicos como Asunto , Células Dendríticas/inmunología , Células Dendríticas/virología , Infecciones por VIH/inmunología , Infecciones por VIH/virología , Humanos , Macaca , Vacunas contra el SIDAS , Síndrome de Inmunodeficiencia Adquirida del Simio/inmunología , Virus de la Inmunodeficiencia de los Simios , Vacunas de Productos Inactivados , Carga Viral
8.
Ann Endocrinol (Paris) ; 64(6): 434-41, 2003 Dec.
Artículo en Francés | MEDLINE | ID: mdl-15067248

RESUMEN

UNLABELLED: From the first 198 patient files included into the French Acromegaly Registry, we analyzed 68 patients harboring a somatotroph adenoma with extrasellar extension, after exclusion of those treated by stereotactic or conventional radiotherapy. In these patients (including 37 women), aged 21-77 yr. (45.7 +/- 13.3), GH concentrations ranged from 2-260 microg/L (38.6 +/- 44.3), and IGF I from 86-967% of age-matched upper limit of normal (303 +/- 164). Maximal diameter of the adenoma at MRI was 11-36.5 mm (20.4 +/- 6.5), with cavernous sinus involvement in 68% of cases. Three subgroups were defined: 20 patients treated by long-acting somatostatin analogs only (group M), for a mean duration of 3 yr. (extremes 1-7 yr.), 48 patients initially treated by transsphenoidal surgery (group C), of whom 21 were secondarily treated by long-acting somatostatin analogs (group CM) for a mean duration of 1.2 yr. (extremes 0.2-2 yr.). All 3 groups were not statistically different in terms of tumor mass and initial levels of GH and IGF-1. Patients from group M were significantly older than those of the other groups (p<0.05). RESULTS: 46% of patients from group C after surgery vs. 45% of patients from group M had a mean GH below 2.5 microg/L. Biochemical remission (GH<2.5 microg/L and normal IGF1 normal) was obtained in 31% of cases in group C, vs. 25% in group M. In this group, a decrease of the largest tumor diameter was observed in 10 patients (71.5%), ranging from 10-25% in 7 (50%) and exceeded 50% in 3 (21.5%). In group CM, the biochemical remission rate (42%) and final GH or IGF1 values were not significantly different from group M. In conclusion, these data suggest that surgery or long-acting somatostatin analogs have a comparable efficacy in terms of remission rates in somatotroph macroadenomas with extrasellar extensions.


Asunto(s)
Adenoma/cirugía , Hormona de Crecimiento Humana/metabolismo , Neoplasias Hipofisarias/cirugía , Acromegalia/etiología , Acromegalia/cirugía , Adenoma/tratamiento farmacológico , Adenoma/metabolismo , Adenoma/patología , Adenoma/radioterapia , Adulto , Anciano , Seno Cavernoso/patología , Terapia Combinada , Femenino , Humanos , Hipofisectomía/métodos , Factor I del Crecimiento Similar a la Insulina/análisis , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Invasividad Neoplásica , Octreótido/uso terapéutico , Neoplasias Hipofisarias/tratamiento farmacológico , Neoplasias Hipofisarias/metabolismo , Neoplasias Hipofisarias/patología , Neoplasias Hipofisarias/radioterapia , Radioterapia Adyuvante , Sistema de Registros , Somatostatina/análogos & derivados , Somatostatina/uso terapéutico , Resultado del Tratamiento
9.
Bone Marrow Transplant ; 29(10): 833-42, 2002 May.
Artículo en Inglés | MEDLINE | ID: mdl-12058233

RESUMEN

This retrospective study compares high-dose therapy (HDT) with autologous stem cell transplantation and combined-modality treatment (CT) as a first-line therapy for Hodgkin's disease (HD) for patients with both a clinical stage (CS) IV and/or a mediastinal mass > or =0.45 of the thoracic diameter (MM > or =0.45) at diagnosis, and an incomplete response after the first-line chemotherapy. Data on 42 grafted patients (GP) in Nantes Hospital, France and on 108 combined-modality treated patients (CTP) from two protocols of the GOELAMS group, France (POF 81 and H90) was analyzed. Both groups were comparable except for pulmonary disease in excess in the grafted group (P = 0.01). Among GP, 95% were in complete response at the end of first-line treatment and 77% among CTP. Median follow-up was 53 months (range, 7 to 128 months) for GP and 88 months (range, 25 to 181 months) for CTP. The 5-year freedom from progression (FFP) and event-free survival (EFS) rates were better for GP (87% vs 55% for FFP: P = 0.0004 and 81% vs 51% for EFS: P = 0.0004) whereas the overall survival (OS) rates did not differ significantly (85% for GP vs 71% for CTP: P = 0.06). Similar results were obtained for the groups with a response > or =50% after initial chemotherapy: 91% vs 65% for FFP, P = 0.01; 87% vs 61% for EFS, P = 0.02; and 92% vs 77% for OS, P = 0.2; and for the groups with a response <50%: 80% vs 22% for FFP, P = 0.0003; 72% vs 13% for EFS, P = 0.0001; and 76% vs 46% for OS, P = 0.04. This study shows a better control of the disease with HDT.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Trasplante de Células Madre Hematopoyéticas , Enfermedad de Hodgkin/terapia , Adolescente , Adulto , Anciano , Niño , Preescolar , Protocolos Clínicos , Terapia Combinada , Supervivencia sin Enfermedad , Femenino , Enfermedad de Hodgkin/tratamiento farmacológico , Enfermedad de Hodgkin/patología , Enfermedad de Hodgkin/radioterapia , Humanos , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Estudios Retrospectivos , Factores de Riesgo , Trasplante Autólogo , Irradiación Corporal Total
10.
J Virol ; 75(19): 8949-56, 2001 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-11533158

RESUMEN

Despite significant immune recovery with potent highly active antiretroviral therapy (HAART), eradication of human immunodeficiency virus (HIV) from the bodies of infected individuals represents a challenge. We hypothesized that an inadequate or inappropriate signal in virus-specific antigen presentation might contribute to the persistent failure to mount efficient anti-HIV immunity in most HIV-infected individuals. Here, we conducted an in vitro study with untreated (n = 10) and HAART-treated (n = 20) HIV type 1 (HIV-1) patients which showed that pulsing of monocyte-derived dendritic cells (DC) with aldrithiol-2-inactivated autologous virus resulted in the expansion of virus-specific CD8(+) T cells which were capable of killing HIV-1-infected cells and eradicating the virus from cultured patient peripheral blood mononuclear cells independently of the disease stages and HAART response statuses of the patients. This in vitro anti-HIV effect was further enhanced by the HIV protease inhibitor indinavir (at a nonantiviral concentration), which has been shown previously to be able to up-regulate directly patient T-cell proliferation following immune stimulation. However, following a 2-day treatment with culture supernatant derived from immune-activated T cells (which mimics an in vivo environment of HIV-disseminated and immune-activated lymphoid tissues), DC lost their capacity to present de novo inactivated-virus-derived antigens. These findings provide important information for understanding the establishment of chronic HIV infection and indicate a perspective for clinical use of DC-based therapeutic vaccines against HIV.


Asunto(s)
Linfocitos T CD8-positivos/inmunología , Células Dendríticas/inmunología , Infecciones por VIH/inmunología , Fármacos Anti-VIH/inmunología , Fármacos Anti-VIH/uso terapéutico , Linfocitos T CD8-positivos/patología , Células Dendríticas/patología , Femenino , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/patología , Humanos , Inmunidad Celular , Masculino
11.
J Immunol ; 167(5): 2929-35, 2001 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-11509641

RESUMEN

T cell anergy, apoptosis, and chronic activation of T lymphocytes are prevailing features of HIV infection. The inability to develop an efficient natural antiviral activity in infected patients might be the consequence of a failure of the Ag presentation by dendritic cells (DCs) in chronically activated lymphoid tissues. We have identified a new phenothiazine derivative aminoperazine (APR; 2-amino-10-[3'-(1-methyl-4-piperazinyl)propyl]phenothiazine, C(20)H(26)N(4)S; m.w. 354.51) able to increase (effective dose from 0.1 to 100 nM) the Ag-specific DC-driven proliferation and differentiation of in vitro HIV-infected and uninfected normal donor T cells and of T cells from HIV-1-infected patients. The immunomodulatory effect of APR-sensitized DCs were ascribed to soluble factors derived from DCs. APR was also capable of increasing HIV gag-p24-specific proliferation and anti-HIV cytotoxic activity of patients' CD8(+) T cells against autologous B-lymphoblastoid cell lines expressing a HIV gag gene, resulting in the suppression of both proviral DNA and supernatant viral RNA in the HIV-1-infected patients' T cell culture. This new phenothiazine derivative (APR) might be used for boosting the immune response of vaccinated individuals and for restoring the immunity of immunocompromised patients.


Asunto(s)
Adyuvantes Inmunológicos/farmacología , Linfocitos T CD8-positivos/efectos de los fármacos , Linfocitos T CD8-positivos/inmunología , Células Dendríticas/efectos de los fármacos , Células Dendríticas/inmunología , VIH-1/inmunología , Adyuvantes Inmunológicos/química , Apoptosis , Linfocitos T CD8-positivos/citología , División Celular/efectos de los fármacos , Línea Celular , Citotoxicidad Inmunológica/efectos de los fármacos , Genes gag , Proteína p24 del Núcleo del VIH/administración & dosificación , Proteína p24 del Núcleo del VIH/inmunología , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/inmunología , VIH-1/genética , Humanos , Técnicas In Vitro , Activación de Linfocitos/efectos de los fármacos , Fenotiazinas , Piperazinas , Acetato de Tetradecanoilforbol/farmacología
12.
Acta Oncol ; 39(4): 501-8, 2000.
Artículo en Inglés | MEDLINE | ID: mdl-11041113

RESUMEN

We report the results of three consecutive programs combining initial intensive chemotherapy and radiotherapy in the treatment of patients with limited small-cell lung cancer (SCLC). The objective was to test the feasibility and the effect of high-dose chemotherapy and three thoracic irradiation programs on survival and patterns of relapse. Forty-two patients with limited SCLC were enrolled. All patients received high-dose chemotherapy (vindesine, etoposide, doxorubicin, cisplatin and cyclophosphamide or ifosfamide). In the SC 84 program, chest and brain radiotherapy was delivered during each course of chemotherapy, with a complementary irradiation after chemotherapy. In the SC 86 and SC 92 programs, patients received chemotherapy followed by thoracic irradiation and prophylactic brain and spinal axis radiotherapy. At the end of treatment, 40 patients (95%) were in complete response. During chemotherapy, high levels of toxicity were noted. All patients had grade IV hematological toxicities. The extra-hematological toxicities were digestive (grade III: 21%; grade IV: 7%) and hepatic (grades III and IV: 14%). During irradiation, patients presented digestive, pulmonary and hematological toxicities. Five patients developed late toxicities and a second malignancy was observed in 4 patients. The 2- and 5-year survival rates for all patients were 51% and 27%, respectively. Despite the marked toxicity of the initial intensive chemotherapy, the treatments are tolerable and effective in the control of extra-thoracic micrometastases, whereas they are less effective for thoracic primary tumor.


Asunto(s)
Antineoplásicos/uso terapéutico , Carcinoma de Células Pequeñas/tratamiento farmacológico , Carcinoma de Células Pequeñas/radioterapia , Neoplasias Pulmonares/tratamiento farmacológico , Neoplasias Pulmonares/radioterapia , Antineoplásicos/efectos adversos , Cisplatino/administración & dosificación , Terapia Combinada , Ciclofosfamida/administración & dosificación , Doxorrubicina/administración & dosificación , Etopósido/administración & dosificación , Estudios de Factibilidad , Femenino , Humanos , Ifosfamida/administración & dosificación , Masculino , Persona de Mediana Edad , Dosificación Radioterapéutica , Análisis de Supervivencia , Resultado del Tratamiento , Vindesina/administración & dosificación
13.
Blood ; 96(1): 250-8, 2000 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-10891458

RESUMEN

In 99 adults infected with human immunodeficiency virus type 1 (HIV-1) who received highly active antiretroviral therapy (HAART) (including 2 nucleoside analogues and 1 or 2 protease inhibitors) for 1 year, CD4(+) and CD8(+) T cells (including memory and naive subsets) increased similarly among patients with sustained plasma viral load decrease, transient decrease, or no decrease. A linear correlation was observed between the decrease in serum beta(2)-microglobulin concentration (an independent surrogate marker of HIV disease) and the increase in peripheral blood T-cells (CD4(+) and CD8(+)) counts. In vitro, HIV protease inhibitors indinavir and saquinavir (but not nucleoside analogues) enhanced the survival of patients' peripheral blood T cells at doses that are at least 30-fold lower than those required for achieving 90% viral inhibition in the same cultures. This enhanced T-cell survival (which is similar for CD4 and CD8 cells) was associated with a restoration of T-cell proliferative response to immune stimuli. However, neither TCR/CD3-ligation- nor Fas-ligation-triggered apoptosis was affected by either of the 2 protease inhibitors. A reduction in apoptosis observed after prolonged culture of patient T cells in the presence of the protease inhibitors could result from restored T-cell proliferation. These findings explain the discrepancies between virologic and immunologic responses that are increasingly reported in patients receiving HAART, and may provide insights into the pathogenesis of HIV infection.


Asunto(s)
Inhibidores de la Proteasa del VIH/uso terapéutico , Seropositividad para VIH/tratamiento farmacológico , Seropositividad para VIH/inmunología , Activación de Linfocitos/efectos de los fármacos , Linfocitos T/inmunología , Adulto , Apoptosis , Biomarcadores/sangre , Recuento de Linfocito CD4 , Linfocitos T CD8-positivos/inmunología , Células Cultivadas , Quimioterapia Combinada , Femenino , Seropositividad para VIH/sangre , VIH-1/aislamiento & purificación , Humanos , Recuento de Linfocitos , Masculino , Linfocitos T/efectos de los fármacos , Carga Viral , Microglobulina beta-2/sangre
14.
J Virol ; 74(14): 6648-51, 2000 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-10864680

RESUMEN

We have measured in 22 asymptomatic human immunodeficiency virus type 1-infected patients (10 rapid progressors and 12 slow progressors) the proviral load of CD4(+) T cells homogeneously superinfected by the same dose of a non-syncytium-inducing virus in the presence or in the absence of autologous CD8(+) T cells. We demonstrated that the antiviral activity of CD8(+) T cells was highly predictive of the rate of peripheral CD4(+) T-cell decline.


Asunto(s)
Linfocitos T CD4-Positivos/virología , Linfocitos T CD8-positivos/virología , Seropositividad para VIH/inmunología , VIH-1/inmunología , Adulto , Recuento de Linfocito CD4 , Linfocitos T CD4-Positivos/inmunología , Linfocitos T CD8-positivos/inmunología , Células Cultivadas , Femenino , Seropositividad para VIH/virología , VIH-1/aislamiento & purificación , Humanos , Masculino , ARN Viral/análisis , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Linfocitos T Citotóxicos/inmunología , Linfocitos T Citotóxicos/virología , Carga Viral , Viremia/inmunología , Viremia/virología
17.
J Immunol ; 162(11): 6942-6, 1999 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-10352317

RESUMEN

The genetics of resistance to infection by HIV-1 cohort consists of 200 slow and 75 rapid progressors to AIDS corresponding to the extremes of HIV disease outcome of 20,000 Caucasians of European descent. A comprehensive analysis of HLA class I and class II genes in this highly informative cohort has identified HLA alleles associated with fast or slow progression, including several not described previously. A quantitative analysis shows an overall HLA influence independent of and equal in magnitude (for the protective effect) to the effect of the CCR5-Delta32 mutation. Among HLA class I genes, A29 (p = 0.001) and B22 (p < 0.0001) are significantly associated with rapid progression, whereas B14 (p = 0.001) and C8 (p = 0.004) are significantly associated with nonprogression. The class I alleles B27, B57, C14 (protective), and C16, as well as B35 (susceptible), are also influential, but their effects are less robust. Influence of class II alleles was only observed for DR11. These results confirm the influence of the immune system on disease progression and may have implications on peptide-based vaccine development.


Asunto(s)
Síndrome de Inmunodeficiencia Adquirida/genética , Síndrome de Inmunodeficiencia Adquirida/inmunología , Alelos , Antígenos HLA/genética , Antígenos HLA-D/genética , Antígenos de Histocompatibilidad Clase I/genética , Síndrome de Inmunodeficiencia Adquirida/etiología , Quimiocina CXCL12 , Quimiocinas CXC/genética , Progresión de la Enfermedad , Predisposición Genética a la Enfermedad/inmunología , Antígenos HLA-DR/genética , Subtipos Serológicos HLA-DR , Humanos , Inmunidad Innata/genética , Desequilibrio de Ligamiento/inmunología , Receptores CCR2 , Receptores CCR5/genética , Receptores de Quimiocina/genética
18.
J Clin Microbiol ; 37(7): 2323-5, 1999 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-10364605

RESUMEN

Nocardia asteroides complex is an important opportunistic agent in immunocompromised hosts. Usually, primary pulmonary infection occurs and is followed by dissemination of the pathogen to the central nervous system and soft tissues. As described in the literature, almost every organ can be infected, but to our knowledge, Nocardia has been described as a pathogen responsible for thyroid abscess in only one report, which was published in 1993. The present report is the second case report of Nocardia thyroiditis. The patient was under immunosuppressor treatment following a combined liver-kidney transplant and presented with a preexisting nodular goiter which was probably a predisposing factor to the start and development of the thyroid infection.


Asunto(s)
Absceso/microbiología , Nocardiosis/diagnóstico , Tiroiditis/microbiología , Absceso/patología , Antifúngicos/farmacología , Antifúngicos/uso terapéutico , Bocio Nodular/complicaciones , Humanos , Inmunosupresores/efectos adversos , Trasplante de Riñón/inmunología , Masculino , Pruebas de Sensibilidad Microbiana , Persona de Mediana Edad , Nocardia/efectos de los fármacos , Nocardia/aislamiento & purificación , Nocardiosis/etiología , Nocardiosis/patología , Enfermedades Renales Poliquísticas/cirugía , Tiroiditis/patología
20.
Immunol Lett ; 64(2-3): 71-7, 1998 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-9870657

RESUMEN

The vast majority of in vitro experiments testing the cytotoxic T lymphocytes (CTL) activity in HIV infection has been performed with target cells consisting of autologous EBV-transformed B lymphoblastoid cell lines (B-LCLs) expressing Human immunodeficiency virus type I (HIV-1) proteins. However data concerning the lysis of primary CD4+ T lymphocytes expressing HIV-1 antigens by CTLs is still lacking. To study the CTL activity against such primary targets, we used a system involving PBMCs of an HIV+ asymptomatic patient (PT) as effector cells and the CD4+ lymphocytes or B-LCLs of his healthy HLA-identical twin brother (HTW) as target cells. These syngeneic targets were either infected with recombinant vaccinia virus containing HIV-1 gag gene (gag-vac), or coated with HIV-1 gag peptides. We demonstrate in this study that PT CTLs (which were CD3+, CD4-, CD8+, TCRalphabeta+, TCRgammadelta-, CD56-) specifically lysed both types of syngeneic target cells expressing gag-vac; however, CD4+ T cells expressing HIV gag proteins were lysed less efficiently than B-LCLs expressing the same HIV epitopes. On the other hand, no specific lysis was detected when the target cells were uninfected or infected by wild-type vaccinia virus.


Asunto(s)
Linfocitos T CD4-Positivos/inmunología , Citotoxicidad Inmunológica , Productos del Gen gag/inmunología , VIH-1/inmunología , Linfocitos T Citotóxicos/inmunología , Adulto , Secuencia de Aminoácidos , Linfocitos B/inmunología , Linfocitos B/virología , Linfocitos T CD4-Positivos/virología , Línea Celular Transformada , Cromo/metabolismo , Pruebas Inmunológicas de Citotoxicidad , Enfermedades en Gemelos , Productos del Gen gag/metabolismo , Infecciones por VIH/inmunología , Infecciones por VIH/virología , Humanos , Masculino , Datos de Secuencia Molecular , Fragmentos de Péptidos/síntesis química , Fragmentos de Péptidos/química , Gemelos Monocigóticos , Virus Vaccinia/genética , Virus Vaccinia/fisiología
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