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1.
Br J Dermatol ; 179(1): 101-109, 2018 07.
Artículo en Inglés | MEDLINE | ID: mdl-29150843

RESUMEN

BACKGROUND: Psoriasis exhibits several extracutaneous manifestations. Little is known about hepatic parameters specifically associated with psoriasis. OBJECTIVES: To study whether psoriasiform dermatitis is associated with liver injury. METHODS: We studied liver parameters of inflammation and fibrosis in a murine model of psoriasiform dermatitis induced by topical application of imiquimod for 9 weeks. RESULTS: Topical treatment with imiquimod induced a form of psoriasiform dermatitis reminiscent of the human disorder, characterized by thickened and scaly skin, psoriasiform epidermal hyperplasia, altered keratinocyte differentiation and cutaneous overexpression of interleukin-17A. Mice with dermatitis displayed hepatitis, as shown by elevation of plasma transaminase levels, as well as portal and periportal hepatitis, characterized by T-lymphocyte (CD3ε+ ) and polymorphonuclear cell (Gr1+ ) infiltrates. The hepatitis progressed towards liver fibrogenesis, as shown by excessive Sirius red staining, which is consistent with the expression of α-smooth muscle actin by hepatic stellate cells. CONCLUSIONS: These results indicate that liver inflammation and fibrosis are associated with experimental psoriasiform dermatitis. Our results suggest that psoriatic inflammation may be associated with specific liver injury.


Asunto(s)
Erupciones por Medicamentos/etiología , Imiquimod/toxicidad , Inductores de Interferón/toxicidad , Cirrosis Hepática/etiología , Psoriasis/complicaciones , Animales , Enfermedad Hepática Inducida por Sustancias y Drogas/etiología , Modelos Animales de Enfermedad , Imiquimod/administración & dosificación , Masculino , Ratones Endogámicos C57BL
2.
Ann Oncol ; 24(5): 1267-73, 2013 May.
Artículo en Inglés | MEDLINE | ID: mdl-23293113

RESUMEN

BACKGROUND: Only patients with wild-type (WT) KRAS tumors benefit from anti-epidermal growth factor receptor (EGFR) monoclonal antibodies (Mabs) in metastatic colorectal cancer (mCRC). Pyrosequencing is now widely used for the determination of KRAS mutation burden and a conservative cut-off point of 10% has been defined. Up until now, the impact of low-frequency KRAS mutations (<10%) on the response to anti-EGFR Mabs has yet to be evaluated. PATIENTS AND METHODS: Tumors from patients receiving anti-EGFR Mabs based on a WT genotype for KRAS, as determined using direct sequencing, have been retrospectively analyzed by pyrosequencing. Patients were categorized as WT (no KRAS mutation) or low-frequency mutation when KRAS mutation was <10% (KRAS low MT). RESULTS: A total of 168 patients treated by anti-EGFR Mabs for mCRC were analyzed. According to pyrosequencing, 138 tumors remained KRAS WT, while 30 tumors were KRAS low MT. In the KRAS low MT and KRAS WT groups, the response rates were 6.7% and 37.0%, respectively, while stabilization amounted to 23.3% versus 32.6% and progression to 70% versus 29% (P < 0.01). Progression-free survival (PFS) was 2.7 ± 0.5 months for KRAS low MT and was 6.0 ± 0.3 months for KRAS WT (P < 0.01). CONCLUSIONS: These results appear to validate consideration of low-frequency KRAS mutation tumors as positive, and justify a large-scale prospective study.


Asunto(s)
Anticuerpos Monoclonales/uso terapéutico , Antineoplásicos/uso terapéutico , Neoplasias Colorrectales/tratamiento farmacológico , Neoplasias Colorrectales/genética , Receptores ErbB/antagonistas & inhibidores , Proteínas Proto-Oncogénicas/genética , Proteínas ras/genética , Anciano , Anticuerpos Monoclonales/inmunología , Secuencia de Bases , Biomarcadores de Tumor/genética , Neoplasias Colorrectales/inmunología , Neoplasias Colorrectales/patología , Receptores ErbB/inmunología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Mutación , Metástasis de la Neoplasia/tratamiento farmacológico , Proteínas Proto-Oncogénicas p21(ras) , Estudios Retrospectivos , Análisis de Secuencia de ADN
3.
J Viral Hepat ; 17(6): 435-43, 2010 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-19780936

RESUMEN

To assess the impact of the French national hepatitis C prevention programme initiated in 1999, we analysed trends in hepatitis C virus (HCV) prevalence, testing and characteristics of HCV-infected patient at first referral from 1994 to 2006. We used four data sources: Two national population-based sero-prevalence surveys carried out in 1994 and 2004; two surveillance networks, one based on public and private laboratories throughout France and the other on hepatology reference centres, which aim to monitor, respectively, trends of anti-HCV screening and of epidemiological-clinical characteristics of HCV patients at first referral. Between 1994 and 2004, the anti-HCV prevalence for adults aged 20-59 years decreased from 1.05 (95% confidence interval 0.75-1.34) to 0.71 (0.52-0.97). During the same period, those anti-HCV positive with detectable HCV RNA decreased from 81 to 57%, whereas, the proportion of anti-HCV positive persons aware of their status evolved from 24 to 56%. Anti-HCV screening activity increased by 45% from 2000 to 2005, but decreased in 2006 (-10%), while HCV positivity among those tested decreased from 4.3 to 2.9%. The proportion of cirrhosis at first referral remains around 10% between 2001 and 2006, with many patients with excessive alcohol consumption (34.7% among males) or viral co-infections (HIV seropositivity for 5.2% patients). Our analysis indicates that the national programme had a positive impact at the population level through improved prevention, screening and management. There is still a need to identify timely those at risk for earlier interventions, to assess co-morbidities better and for a multidisciplinary approach to HCV management.


Asunto(s)
Control de Enfermedades Transmisibles/métodos , Anticuerpos contra la Hepatitis C/sangre , Hepatitis C/epidemiología , Hepatitis C/prevención & control , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Alcoholismo/epidemiología , Comorbilidad , Femenino , Francia/epidemiología , Infecciones por VIH/epidemiología , Hepatitis C/complicaciones , Humanos , Cirrosis Hepática/epidemiología , Cirrosis Hepática/virología , Masculino , Persona de Mediana Edad , ARN Viral/sangre , Estudios Seroepidemiológicos , Adulto Joven
4.
Clin Exp Immunol ; 158(1): 115-24, 2009 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-19737238

RESUMEN

Alcoholic liver cirrhosis (ALC) is characterized by increased circulating levels of immunoglobulins (Igs). ALC patients undergo bacterial translocation evidenced by the presence of bacterial DNA in peripheral blood. Bacterial pathogen-associated molecular patterns (PAMPs), such as lipopolysaccharide (LPS), peptidoglycan (PGN) and unmethylated cytosine-guanine dinucleotide (CpG) DNA are ligands of Toll-like receptor (TLR)-4, TLR-2 and TLR-9, respectively. Although TLR activation results generally in the secretion of proinflammatory cytokines, activation of B cells through TLR-7 or TLR-9 is involved in their maturation and Ig synthesis. The aim of the present study was to assess Ig synthesis by ALC B cells under PAMP activation in order to evaluate the possible involvement of TLR pathways in the increased Ig levels, and especially the hyper-IgA observed in ALC. CpG, in combination with interleukin (IL)-10 or IL-21, enhanced IgA, IgG and IgM synthesis by healthy donor (HD) PBMCs, but had only a weak effect on ALC PBMCs. Relative CpG-induced IgA production by purified ALC B cells was less important when compared to HD B cells, in accordance with the lower TLR-9 expression on ALC B cells compared to HD B cells, but the absolute IgA production by CpG-activated B cells was enhanced significantly for ALC when compared to HD, in agreement with their intrinsic ability to produce spontaneously more IgA than HD. LPS and PGN had no direct activity on B cells, whereas R848 also enhanced Ig synthesis, as reported recently. Taken together, these results suggest that TLR priming of B cells could account for the hyperimmunoglobulinaemia observed in ALC patients.


Asunto(s)
Linfocitos B/inmunología , Inmunoglobulina A/sangre , Cirrosis Hepática Alcohólica/inmunología , Receptor Toll-Like 9/metabolismo , Linfocitos B/efectos de los fármacos , Estudios de Casos y Controles , Células Cultivadas , Citocinas/farmacología , Fosfatos de Dinucleósidos/farmacología , Citometría de Flujo/métodos , Humanos , Imidazoles/farmacología , Inmunoglobulina A/biosíntesis , Lipopolisacáridos/farmacología , Cirrosis Hepática Alcohólica/metabolismo , Activación de Linfocitos , Peptidoglicano/farmacología , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa/métodos
5.
Aliment Pharmacol Ther ; 47(12): 1682-1689, 2018 06.
Artículo en Inglés | MEDLINE | ID: mdl-29665081

RESUMEN

BACKGROUND: In liver transplant recipients with hepatitis C virus recurrence, there is concern about renal safety of sofosbuvir-based regimens. Changes in serum creatinine or in the estimated glomerular filtration rate (eGFR) under treatment are used to look for possible renal toxicity. However, serum creatinine and eGFR are highly variable. AIM: To analyse renal function trajectory with numerous assays of serum creatinine over a long period of time. METHODS: In a multicentre cohort of 139 patients, the eGFR was obtained from serum creatinine using the Chronic Kidney Disease-Epidemiology Collaboration (CKD-EPI) equation. Slopes of eGFR were defined as a change in eGFR during a period divided by time. Pre-treatment, on-treatment and post-treatment periods were 9 months, 3-9 months and 4.5 months. Interactions between eGFR slopes and the pre-treatment eGFR, use of ribavirin or mycophenolate mofetil, and stage of fibrosis were addressed. On-treatment eGFR slopes were separated in tertiles. Pre- and post-treatment eGFR slopes were compared globally and according to tertiles. RESULTS: The post-treatment eGFR slope was significantly better than pre-treatment eGFR slope (+0.18 (IQR -0.76 to +1.32) vs -0.11 (IQR -1.01 to +0.73) mL/min/1.73 m2 /month, P = 0.03) independently of the pre-treatment eGFR (P = 0.99), ribavirin administration (P = 0.26), mycophenolate mofetil administration (P = 0.51) and stage of fibrosis (F3 and F4 vs lower stages, P = 0.18; F4 vs lower stages, P = 0.08; F4 Child-Pugh B and C vs lower stages, P = 0.38). Tertiles of on-treatment eGFR slopes were -1.71 (IQR -2.54 to -1.48), -0.78 (IQR -1.03 to -0.36) and +0.75 (IQR +0.28 to +1.47) mL/min/1.73 m2 /month. Pre- and post-treatment eGFR slopes were not significantly different according to tertiles (respectively, P = 0.34, 0.08, 0.73). CONCLUSION: The eGFR varies during treatment and gives a confusing picture of the renal safety of sofosbuvir-based regimens. In contrast, longitudinal assessment of the eGFR shows a rising trajectory over longer time, meaning that these therapies are safe for the kidneys in our cohort of liver transplant recipients.


Asunto(s)
Hepatitis C/tratamiento farmacológico , Riñón/patología , Trasplante de Hígado/métodos , Sofosbuvir/administración & dosificación , Anciano , Estudios de Cohortes , Creatinina/sangre , Femenino , Tasa de Filtración Glomerular , Hepacivirus/aislamiento & purificación , Humanos , Estudios Longitudinales , Persona de Mediana Edad , Estudios Prospectivos , Recurrencia , Insuficiencia Renal Crónica/epidemiología , Ribavirina/administración & dosificación , Sofosbuvir/efectos adversos
6.
Eur J Cancer ; 51(8): 925-34, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-25864037

RESUMEN

BACKGROUND: A microsatellite instability (MSI) phenotype is found in about 12% of colorectal cancers (CRCs) and is associated with a low recurrence rate after curative surgery. Several studies have identified clinical and pathological factors predictive of recurrence in resected CRC, but not in the MSI subgroup. PATIENTS AND METHODS: This multicentre retrospective study included patients with stage I, II or III MSI CRCs. Disease-free survival (DFS) was calculated with the Kaplan-Meier method. Factors associated with DFS were identified in univariate and multivariate Cox analyses. RESULTS: We studied 521 patients with MSI CRC. Respectively 11%, 51% and 38% of patients were at stage I, II and III. Mean age was 68.7years and 36% of the patients received adjuvant chemotherapy. Median follow-up was 32.8months. The disease recurrence rates were 6% and 21% in stage II and III patients, respectively. The 3-year DFS rate was 77%. In univariate analysis, age, bowel obstruction, lymph node invasion, stage T4, vascular emboli, lymphatic invasion and perinervous invasion were associated with poorer DFS (P<0.05). Three relevant independent predictors of poor DFS were identified in multivariate analysis, namely bowel obstruction (HR=2.46; 95%CI 1.31-4.62, P=0.005), vascular emboli (HR=2.79; 95%CI 1.74-4.47, P<0.001) and stage T4 (HR=2.16; 95%CI 1.31-3.56, P=0.002). CONCLUSIONS: Bowel obstruction, vascular emboli and stage T4 are independently associated with MSI CRC recurrence, suggesting that screening for vascular emboli in routine clinical practice may assist with adjuvant chemotherapy decision-making.


Asunto(s)
Neoplasias Colorrectales/diagnóstico , Neoplasias Colorrectales/genética , Inestabilidad de Microsatélites , Anciano , Anciano de 80 o más Años , Biomarcadores de Tumor/genética , Quimioterapia Adyuvante , Neoplasias Colorrectales/terapia , Neoplasias Colorrectales Hereditarias sin Poliposis/diagnóstico , Neoplasias Colorrectales Hereditarias sin Poliposis/genética , Neoplasias Colorrectales Hereditarias sin Poliposis/terapia , Procedimientos Quirúrgicos del Sistema Digestivo , Supervivencia sin Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pronóstico , Estudios Retrospectivos
7.
J Immunol Methods ; 193(2): 103-48, 1996 Jun 21.
Artículo en Inglés | MEDLINE | ID: mdl-8699027

RESUMEN

51 monoclonal antibodies (McAb) with putative specificity for human IgA, the IgA subclasses, Am allotypes or secretory component (SC) were evaluated for immunoreactivity and specificity by nine laboratories employing immunodiffusion, agglutination, immunohistological assays, immunoblotting and direct binding and competitive inhibition enzyme immunoassays. McAbs specific for IgA PAN (n = 24), IgA1 (n = 7), IgA2 (n = 3), IgA2m(2) (n = 2), non-IgA2m(2) (n = 4) and SC or secretory IgA (n = 5) were identified that were immunoreactive and specific in the assays employed. The McAbs identified as IgA- or SC-reactive were shown to be non-reactive to human IgG, IgM, IgD, IgE, kappa and lambda by direct binding and competitive inhibition immunoassays. Interestingly, no McAbs with restricted specificity for IgA2m(1) were identified. Some McAbs displayed higher affinity and/or better performance in one or several of the assay groups. The IgA- and SC-specific McAbs identified in this international collaborative study have potential as immunochemical reference reagents to identify and quantitate monomeric and polymeric IgA in human serum and secretions.


Asunto(s)
Anticuerpos Monoclonales/química , Anticuerpos Monoclonales/clasificación , Especificidad de Anticuerpos , Inmunoglobulina A/clasificación , Inmunoglobulina A/inmunología , Alotipos de Inmunoglobulinas/inmunología , Componente Secretorio/inmunología , Animales , Sitios de Unión de Anticuerpos , Epítopos/química , Epítopos/inmunología , Humanos , Inmunoglobulina A/química , Inmunoglobulina A Secretora/inmunología , Alotipos de Inmunoglobulinas/química , Técnicas Inmunológicas/normas , Ratones , Estándares de Referencia , Componente Secretorio/química
8.
Immunol Lett ; 32(1): 31-4, 1992 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-1500081

RESUMEN

The subclass and allotype distribution of serum monoclonal IgA from myeloma patients was determined by ELISA with monoclonal antibodies in two French and one Japanese laboratory. In addition, the French sera were tested for their reactivity with the lectin jacalin. No significant difference in the isotypic distribution between French and Japanese series could be demonstrated: kappa/lambda ratios were 0.99 and 1.17, and the IgA1 subclass accounted for 93.9% and 91% of cases in the French and Japanese studies, respectively. Five out of 7 myeloma IgA2 from Japan and only one of the 12 IgA2 from France belonged to the A2m(2) allotype (P less than 0.01). All 219 IgA1 tested reacted with jacalin by immunoelectrophoresis (IEP), although with variable intensities. Among IgA2 proteins, only one (of the A2m(1) allotype) yielded a precipitating line with jacalin by IEP. Molecular analysis demonstrated that this protein was an IgA1-IgA2 hybrid bearing most of the A2m(1) epitopes.


Asunto(s)
Anticuerpos Monoclonales/clasificación , Inmunoglobulina A/clasificación , Alotipos de Inmunoglobulinas/sangre , Isotipos de Inmunoglobulinas/sangre , Lectinas , Mieloma Múltiple/inmunología , Proteínas de Mieloma/clasificación , Lectinas de Plantas , Anticuerpos Monoclonales/sangre , Anticuerpos Monoclonales/inmunología , Pueblo Asiatico , Ensayo de Inmunoadsorción Enzimática , Femenino , Francia , Humanos , Inmunoglobulina A/sangre , Inmunoglobulina A/inmunología , Japón , Masculino , Mieloma Múltiple/sangre , Proteínas de Mieloma/inmunología , Población Blanca
9.
Eur J Pharmacol ; 247(2): 111-8, 1993 Oct 15.
Artículo en Inglés | MEDLINE | ID: mdl-8281999

RESUMEN

The radioligand 2-[125I]iodomelatonin was used to study melatonin binding sites in chicken and human intestines. In the chicken duodenum, 2-[125I]iodomelatonin binding sites were enriched in the musculosa layer (Bmax approximately 1 fmol/mg protein) as compared to the mucosa/submucosa layer (Bmax approximately 0.2 fmol/mg protein). 2-[125I]iodomelatonin bound with a Kd of 68 +/- 18 pM (mean +/- S.E.M., n = 13) and was displaced by melatonin with a Ki of 0.3 nM. The Kd value for 2-[125I]iodomelatonin was increased 2- to 4-fold by a GTP analog, suggesting that the binding sites might be coupled to a G-protein. The affinity order of nine melatonin analogs at the enteric binding sites was in agreement with the pharmacological profile of melatonin receptors described in other tissues. In the human jejunum, 2-[125I]iodomelatonin binding could be observed in the mucosa/submucosa layer (Kd = 150-200 pM, Bmax = 0.7 fmol/mg protein). The radioligand was efficiently displaced by melatonin (Ki = 0.6 nM) but only marginally by N-acetyltryptamine (Ki = 22 microM) and serotonin (Ki = 14 microM).


Asunto(s)
Mucosa Intestinal/metabolismo , Receptores de Superficie Celular/metabolismo , Animales , Unión Competitiva/efectos de los fármacos , Pollos , Duodeno/metabolismo , Proteínas de Unión al GTP/metabolismo , Nucleótidos de Guanina/farmacología , Humanos , Hidrólisis , Técnicas In Vitro , Mucosa Intestinal/efectos de los fármacos , Radioisótopos de Yodo , Cinética , Masculino , Melatonina/análogos & derivados , Melatonina/metabolismo , Membranas/efectos de los fármacos , Membranas/metabolismo , Persona de Mediana Edad , Pronasa , Receptores de Superficie Celular/efectos de los fármacos , Receptores de Melatonina
10.
Hepatogastroenterology ; 42(3): 250-8, 1995 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-7590574

RESUMEN

Because primary sclerosing cholangitis (PSC) frequently is associated with inflammatory bowel disease, the phenotypic and functional characteristics of lymphocytes isolated from colonic mucosa were studied in patients with primary sclerosing cholangitis (PSC), patients with ulcerative colitis and patients with other colonic and hepatic disorders. To accomplish this, lymphocytes isolated from colonic biopsies obtained at the time of colonoscopy were expanded in vitro in the presence of interleukin 2 (IL2). Cell propagation was similar in patients with PSC with or without associated inflammatory bowel disease but was diminished significantly when compared to results obtained in patients with ulcerative colitis not associated with PSC. The CD4:CD8 ratio of the propagated lymphocytes was increased in patients with PSC compared to controls. The Leu 19+ subset of cells was also increased in PSC patients. In patients with inflammatory bowel disease, increased cytotoxicity was noted at low effector to target cell ratios with SK-HEP (hepatocellular carcinoma) but not RPMI 7451 (cholangiocarcinoma) targets. No differences between PSC patients and controls were observed for NK sensitive and NK resistant targets. Based upon these studies it can be concluded that: 1) expansion of lymphocytes obtained from endoscopic colonic biopsies using recombinant IL2 represents an alternative method by which intestinal lymphocytes can be studied; 2) natural killer cells are increased in the colonic mucosa of patients with primary sclerosing cholangitis; 3) colonic cytotoxic T lymphocytes may be more active in patients with chronic liver disease and particularly those with associated inflammatory bowel disease.


Asunto(s)
Colangitis Esclerosante/patología , Colitis Ulcerosa/patología , Colon/patología , Enfermedad de Crohn/patología , Subgrupos de Linfocitos T/patología , Subgrupos de Linfocitos T/fisiología , Linfocitos T/patología , Linfocitos T/fisiología , Adulto , Anciano , Biopsia , Estudios de Casos y Controles , División Celular , Células Cultivadas , Femenino , Humanos , Interleucina-2/farmacología , Hepatopatías/patología , Masculino , Persona de Mediana Edad
11.
Gastroenterol Clin Biol ; 22(5): 519-24, 1998 May.
Artículo en Inglés | MEDLINE | ID: mdl-9762290

RESUMEN

OBJECTIVES: Acute bleeding from esophageal varices is a major complication of cirrhosis. Despite the large number of published studies no predictive factors of control of bleeding have been identified. We assessed the clinical and biological factors predictive of bleeding control within the first 2 weeks after a bleeding episode in a homogeneous group of patients enrolled in a large multicenter trial, who underwent a standardized emergency sclerotherapy session. METHODS: 101 patients with cirrhosis were enrolled. All had endoscopy-proven variceal bleeding, and the interval between hematemesis or melena and emergency sclerotherapy was always less than 24 hours. A second sclerotherapy session and other methods for the prevention of rebleeding were allowed after 5 days. RESULTS: Treatment failed in 16 patients after 24 hours and in a total of 33 patients after 15 days. Three of the 17 variables included in multivariate logistic analysis were associated with failure at 24 hours: encephalopathy (P = 0.006, OR = 4.0), blood transfusion prior to sclerotherapy (P = 0.012, OR = 6.2) and previous propranolol therapy (P = 0.022, OR = 4.6). Two variables were associated with failure between 24 hours and day 15 in patients successfully controlled after 24 hours: an interval between the onset of bleeding and sclerotherapy of less than 12 hours (P = 0.010) and blood transfusion (P = 0.018). After 15 days, three variables were associated with failure in a multivariate Cox model: encephalopathy (P = 0.0025, OR = 2.3), time to sclerotherapy (P = 0.022, OR 2.3) and blood transfusion before sclerotherapy (P = 0.0005, OR = 4.0). CONCLUSION: Encephalopathy, the severity of bleeding, assessed in terms of transfusion requirements, and the time between clinically overt bleeding and sclerotherapy are the main predictive factors of failure of the control of bleeding after emergency sclerotherapy for acute bleeding from esophageal varices.


Asunto(s)
Várices Esofágicas y Gástricas/terapia , Hemorragia Gastrointestinal/terapia , Escleroterapia , Urgencias Médicas , Várices Esofágicas y Gástricas/complicaciones , Femenino , Hemorragia Gastrointestinal/etiología , Humanos , Masculino , Estudios Prospectivos , Factores de Tiempo , Resultado del Tratamiento
13.
Gastroenterol Clin Biol ; 9(10): 670-3, 1985 Oct.
Artículo en Francés | MEDLINE | ID: mdl-3877654

RESUMEN

The aim of the present study was to evaluate how many cirrhotics may receive propranolol after upper gastrointestinal bleeding. One hundred and twelve patients were consecutively admitted in a digestive intensive care unit during a two-year study, for bleeding of esophageal (63 p. 100) or gastric (4 p. 100) varices, or acute gastric erosions (33 p. 100). Twenty-one per cent of patients were initially class A (Child's classification). 26 p. 100 were B, and 53 p. 100 were C. Eighteen patients (16 p. 100) died within the first 10 days. Eighty patients (71 p. 100) did not receive propranolol because of: a) contraindication for this drug (asthma, heart failure, diabetes, n = 25); b) carcinoma, mainly of the liver (n = 11); c) foreseeable lack of compliance with the treatment (n = 8); d) criteria for which the efficacy of propranolol has not been demonstrated (small esophageal varices, jaundice, or ascites, n = 36). Only 14 patients (13 p. 100) received propranolol therapy: 5 stopped their treatment, 3 because of gastrointestinal rebleeding. Our experience suggests that propranolol can be used only in a few cirrhotics for prevention of recurrent gastrointestinal bleeding.


Asunto(s)
Hemorragia Gastrointestinal/prevención & control , Cirrosis Hepática/tratamiento farmacológico , Propranolol/uso terapéutico , Adulto , Anciano , Femenino , Hemorragia Gastrointestinal/etiología , Humanos , Cirrosis Hepática/complicaciones , Masculino , Persona de Mediana Edad , Propranolol/efectos adversos , Estudios Prospectivos
14.
Gastroenterol Clin Biol ; 22(8-9): 727-31, 1998.
Artículo en Francés | MEDLINE | ID: mdl-9823563

RESUMEN

Acute intermittent porphyria, the most commun acute porphyria in France, is an autosomal dominant disorder of heme biosynthesis. The basic biochemical defect is reduced activity of the enzyme porphobilinogen deaminase. Clinical evolution is characterized by acute attacks, with a severe prognosis due to acute abdominal pain and risk of neurological complications, induced by drug intake, infection, alcohol intake or unknown factors. We report the case of a patient with an inappropriate antidiuretic secretion syndrome and secondary hyperaldosteronism associated with acute intermittent porphyria and polyradiculoneuritis syndrome. This syndrome was found to be induced a delayed reaction to thiopental. A favorable response was achieved with heme-arginate treatment.


Asunto(s)
Hiperaldosteronismo/complicaciones , Síndrome de Secreción Inadecuada de ADH/complicaciones , Porfiria Intermitente Aguda/complicaciones , Adulto , Heterocigoto , Humanos , Hiperaldosteronismo/genética , Síndrome de Secreción Inadecuada de ADH/genética , Masculino , Linaje , Porfiria Intermitente Aguda/genética
15.
Gastroenterol Clin Biol ; 23(8-9): 978-80, 1999.
Artículo en Francés | MEDLINE | ID: mdl-10533147

RESUMEN

Pancreatic necrosis infection is the most common complication affecting mortality of severe acute pancreatitis (death rate 80%). Bacterial infections particularly with coliforms or anaerobes account for the majority of cases of infected necrosis. Fungal pancreatic infections with Candida species are rare and often nosocomial. We report herein the first case of pancreatic necrosis infection with Candida parapsilosis associated with fungemia confirmed by molecular typing.


Asunto(s)
Candidiasis , Fungemia , Páncreas/microbiología , Páncreas/patología , Enfermedades Pancreáticas/microbiología , Pancreatitis/microbiología , Enfermedad Aguda , Humanos , Masculino , Persona de Mediana Edad , Necrosis , Enfermedades Pancreáticas/patología , Pancreatitis/patología
16.
Gastroenterol Clin Biol ; 13(10): 834-7, 1989 Oct.
Artículo en Francés | MEDLINE | ID: mdl-2687073

RESUMEN

A 77-year-old woman had variceal bleeding related to systemic mastocytosis. Physical examination revealed minimal ascites and mild hepatomegaly noted 11 years before. Liver function tests were nearly normal. Because of early recurrent bleeding, a mesocaval shunt was performed. Wedged liver biopsy showed a moderate fibrosis of portal tracts and massive mast cell infiltration within portal tracts and sinusoids. Perisinusoidal collagen deposition was demonstrated ultrastructurally. We suggest that systemic mastocytosis be added to the list of diseases related portal hypertension with perisinusoidal fibrosis. As there is currently no specific treatment, a portocaval shunt should be discussed.


Asunto(s)
Várices Esofágicas y Gástricas/etiología , Hemorragia Gastrointestinal/etiología , Mastocitosis/complicaciones , Anciano , Femenino , Humanos , Hipertensión Portal/etiología , Hígado/patología , Hígado/ultraestructura , Cirrosis Hepática/etiología , Mastocitosis/patología , Rotura Espontánea
17.
Gastroenterol Clin Biol ; 13(4): 335-9, 1989 Apr.
Artículo en Francés | MEDLINE | ID: mdl-2737389

RESUMEN

The aim of this study was to determine the efficacy of oral antibiotics in the treatment of severe infections in cirrhosis. Twenty-two patients (17 males, 5 females) with spontaneous bacteremia (n = 7) or bacterial peritonitis (n = 15) were treated with oral pefloxacin 400 mg per 24 hr alone (n = 1) or in combination with another oral antibiotic, trimethoprimsulfamethoxazole (n = 13), amoxicillin (n = 6), cefadroxil (n = 2), or metronidazole (n = 1). In patients with spontaneous bacteremia, all organisms were found to be sensitive to oral antibiotics, and a favorable response was elicited in 6 out of 7 (86 p. cent) within 3 days (mean) of treatment. In patients with spontaneous peritonitis, ascitic fluid cultures were positive in 11 cases, and organisms were sensitive to pefloxacin in 9 out of 11 cases. A favorable response was elicited in 13 out of 15 within 2 to 8 days of treatment. Fourteen patients died (64 p. cent), 3 of infection (bacteremia n = 1, peritonitis n = 2), and 11 patients of causes unrelated to infection, mainly variceal hemorrhage, hepatorenal syndrome or hepatocellular carcinoma, although the clinical symptoms of infection were controlled. One-year survival was 57 p. cent in patients with bacteremia and 33 p. cent in those with bacterial peritonitis. Oral treatment was well tolerated in all patients. We suggest that most bacteremia and spontaneous bacterial peritonitis in cirrhotic patients can be treated with oral antibiotics. In some patients, this may be accomplished on an out patient basis.


Asunto(s)
Líquido Ascítico/tratamiento farmacológico , Infecciones Bacterianas/tratamiento farmacológico , Cirrosis Hepática Alcohólica/complicaciones , Pefloxacina/administración & dosificación , Sepsis/tratamiento farmacológico , Administración Oral , Anciano , Antibacterianos , Líquido Ascítico/etiología , Infecciones Bacterianas/etiología , Quimioterapia Combinada/administración & dosificación , Quimioterapia Combinada/metabolismo , Quimioterapia Combinada/uso terapéutico , Femenino , Humanos , Cirrosis Hepática Alcohólica/metabolismo , Masculino , Persona de Mediana Edad , Pefloxacina/metabolismo , Pefloxacina/uso terapéutico , Estudios Prospectivos , Sepsis/etiología , Factores de Tiempo
18.
Gastroenterol Clin Biol ; 22(11): 891-6, 1998 Nov.
Artículo en Francés | MEDLINE | ID: mdl-9881271

RESUMEN

OBJECTIVE: The aim of this prospective study was to evaluate the prevalence of the peripheral neuropathies associated with chronic hepatitis C and their clinical, electrophysiological and histological characteristics. PATIENTS AND METHODS: Thirty six patients admitted from December 1994 to January 1996 for chronic hepatitis C were prospectively investigated. Laboratory data included liver blood tests, serum cryoprecipitate immunoelectrophoresis, assays for anti-nuclear antibody, rheumatoid factor, circulating immune complexes, anti-SSA and anti-SSB antibodies. For each patient, a clinical neurological evaluation as well as an electrophysiological evaluation were performed by the same operator. In presence of peripheral neuropathy, a neuromuscular biopsy was performed. RESULTS: In seven patients (19%), a peripheral neuropathy was diagnosed related to hepatitis C virus in 3 patients. In these 3 patients presenting with leg paresthesia, an axonal sensitive neuropathy was evidenced by electromyography. A neuromuscular biopsy performed in two of these patients showed a severe diminution of the myelinated fibers associated with vasculitis lesions in one patient. A skin biopsy was performed in the third patient with leg purpura revealing a leukocytoclasic vasculitis. A positive cryoglobulinemia was found in two of these patients. CONCLUSION: In chronic hepatitis C, the prevalence of peripheral neuropathy is 8% and usually associated with cryoglobulinemia. It is an axonal neuropathy with diminution of the myelinated fibers and vasculitis lesions in the absence of cryoglobulinemia.


Asunto(s)
Hepatitis C Crónica/complicaciones , Enfermedades del Sistema Nervioso Periférico/virología , Adulto , Anciano , Biopsia , Crioglobulinemia/sangre , Crioglobulinemia/virología , Electromiografía , Femenino , Hepatitis C Crónica/sangre , Hepatitis C Crónica/inmunología , Humanos , Masculino , Persona de Mediana Edad , Enfermedades del Sistema Nervioso Periférico/diagnóstico , Prevalencia , Estudios Prospectivos
19.
Gastroenterol Clin Biol ; 22(3): 282-5, 1998 Mar.
Artículo en Francés | MEDLINE | ID: mdl-9762211

RESUMEN

OBJECTIVES: Patients presenting with bleeding peptic ulcers are often kept fasted. The contribution of feeding in bleeding recurrence rate is unknown. The aim of this prospective controlled study was to evaluate the effect of early feeding in (a) the bleeding peptic ulcer recurrence rate and (b) the outcome of patients with severe bleeding peptic ulcer. PATIENTS-METHODS: From January through December 1995, all consecutive patients admitted for active bleeding from peptic ulcer were included. All patients underwent emergency endoscopic injection with adrenaline around and into the base of the ulcer and were randomized in two groups. Group A patients (n = 12) received milk on day 1, mixed warm feeding on day 2 and normal diet from day 3, Group B patients (n = 14) were nil by mouth until day 3, then received milk on day 4, mixed warm feeding on day 5, and normal diet from day 6. Twenty-six patients (17 men, 9 women, mean age 71 years) were included. RESULTS: On day 0, both groups (group A vs group B) were comparable (mean +/- SD): hemoglobin (8.8 +/- 2.7 vs 8.1 +/- 2.0 g/dL), transfusion requirements in the first 24 h after admission (2.2 +/- 2.0 vs 2.1 +/- 1.4 units), localization of ulcers (duodenal ulcer: 8 vs 9, gastric ulcer : 4 vs 5). There were no significant differences in group A and group B for bleeding ulcer recurrence rate (0 vs 1 patient) and transfusion requirements (2.6 +/- 2.1 vs 3.3 +/- 2.1 units). Hospital stay was significantly shorter in group A (6.8 +/- 2.1 days) than in group B (9.9 +/- 3.7 days), P = 0.01. CONCLUSION: These results did not provide any evidence of advantages of fasting in patients with active bleeding peptic ulcer treated by endoscopic sclerotherapy. Early feeding did not worsen outcome in patients with active bleeding peptic ulcer and reduced hospital stay.


Asunto(s)
Ingestión de Alimentos , Úlcera Péptica Hemorrágica/dietoterapia , Adulto , Anciano , Anciano de 80 o más Años , Animales , Epinefrina/administración & dosificación , Epinefrina/uso terapéutico , Ayuno , Femenino , Gastroscopía , Humanos , Tiempo de Internación , Masculino , Persona de Mediana Edad , Leche , Úlcera Péptica Hemorrágica/tratamiento farmacológico , Pronóstico , Estudios Prospectivos , Recurrencia , Resultado del Tratamiento , Vasoconstrictores/administración & dosificación , Vasoconstrictores/uso terapéutico
20.
Gastroenterol Clin Biol ; 23(8-9): 887-91, 1999.
Artículo en Francés | MEDLINE | ID: mdl-10533141

RESUMEN

OBJECTIVES: The prognosis of hepatitis C virus infection could be improved by early treatment. However, this is only possible if most patients with hepatitis C consult a specialized institution. The aim of this study was to evaluate the modalities of care of hepatitis C virus infection in one French district. METHODS: Between November and December 1997, 89 biological laboratories from the "Poitou-Charentes" district were asked to provide results of hepatitis C virus serology tests performed during this period. A questionnaire concerning epidemiological and follow-up data was sent to the medical practitioner who prescribed the test, for all positive tests. RESULTS: Seventy eight out of 89 (88%) laboratoires agreed to participate in the study. During the study period, 6,168 subjects were tested and 196 (3.2%) were positive. This test was a diagnostic test in 69 cases (53%) and a confirmation test in 61 cases (47%). The epidemiological questionnaire was filled out in 130 cases. The main putative factors of viral contamination were: intravenous or nasal drug addiction in 69 cases (53%), blood transfusion in 39 cases (30%), and a nosocomial risk factor in 16 cases (12%). Treatment and care of virus infection was evaluated in 113 cases from the follow-up questionnaire: a liver biopsy was performed in 30 cases (27%) and interferon therapy was administered in 13 cases (12%). Liver biopsy was not performed in 83 cases (73%) due to normal transaminase levels or a contraindication to interferon therapy. The main causes of an absence of care or follow-up were: fear of complications of liver biopsy and/or side effects to interferon therapy (19%), chronic alcoholism (18%) and active drug addiction (8%). CONCLUSION: The main causes of failure to administer adequate care in hepatitis C patients were chronic alcoholism, drug addiction and fear of liver biopsy or side effects of interferon therapy. These data should be taken into account for future screening or information compaigns for the general population.


Asunto(s)
Hepatitis C/terapia , Adulto , Biopsia , Femenino , Francia , Hepatitis C/diagnóstico , Hepatitis C/transmisión , Anticuerpos contra la Hepatitis C/sangre , Humanos , Interferones/uso terapéutico , Hígado/patología , Masculino , Persona de Mediana Edad , Encuestas y Cuestionarios
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