Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 28
Filtrar
1.
Prog Urol ; 30(5): 267-272, 2020 Apr.
Artículo en Francés | MEDLINE | ID: mdl-32224094

RESUMEN

INTRODUCTION: Lewy Body Dementia (LBD) is a Parkinsonian disorder which often leads to Lower Urinary Tract Symptoms (LUTS), especially an Overactive Bladder (OAB). There have been few LBD related LUTS depictions in the literature, which is why we did this retrospective study. METHODS: Retrospective single institution study. RESULTS: Nineteen patients with confirmed LBD diagnosis were found, (63% of men, mean age 74 years old). The main symptom was OAB (100% of patients) with frequent stress urinary incontinence (94%) associated with detrusor overactivity (93%) with pressure elevation (79%). Voiding difficulties were found in 16% of medical interviews, and in 53% of urodynamics. In total, 92% of patients complained of constipation, with 44% suffering from fecal incontinence. DISCUSSION: LBD is characterized by alpha-synuclein aggregates in the cerebral cortex, thus explaining associated cognitive impairment. The most commonly found LUTS is stress incontinence. We also found voiding difficulties in smaller proportion, sometimes associated with prostatism. Topographically, these symptoms could be explained by alpha-synuclein aggregates in the frontal and temporal cortex and the pons. Anorectal disorder and sexual dysfunction were frequently associated. Urological complications are scarce in this population, screening is focused in increasing quality of life, and the possibility to discriminate the different types of Parkinsonisms. CONCLUSION: OAB is the most common lower urinary tract symptom in LBD often associated with detrusor overactivity, and less frequently voiding difficulties sometimes associated to prostatism. LEVEL OF EVIDENCE: 3.


Asunto(s)
Enfermedad por Cuerpos de Lewy/complicaciones , Síntomas del Sistema Urinario Inferior/etiología , Vejiga Urinaria Hiperactiva/etiología , Incontinencia Urinaria de Esfuerzo/etiología , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Estudios Retrospectivos
2.
Prog Urol ; 29(4): 226-234, 2019 Mar.
Artículo en Francés | MEDLINE | ID: mdl-30527571

RESUMEN

CONTEXT: Stroke generates diverse urinary disorders, frequent but often under-diagnosed and thus untreated. Even though advances in the comprehension of the physiological voiding control and involved brain areas, the precise correspondence between lesion sites and observed urinary symptoms is not clearly established. OBJECTIVE: This review aimed to update on this neuroanatomical correlates. DOCUMENTARY SOURCES: The search focused on articles written in French or English, on PubMed, studying human beings or animals, published between the 1st of January 2000 and the 31st of August 2018 using the following keywords (stroke or hemiplegia) and (urinary incontinence or low urinary tract symptom or retention or overactive bladder or dysuria) and (anatomy or location or localization or area or lesion). STUDIES SELECTION: The main author selected the most pertinent articles on abstracts and then on full text. RESULTS: Twelve studies were included in our review. We could not fully confirm the neuroanatomical correlates based on the animal model. Frontoparietal lesions in urinary incontinence, role of the insula in the urinary retention, and systematic but different urinary symptoms in the brain stem lesions are the main findings. LIMITS: Few studies were included, with varying methodologies and types of population. CONCLUSION: A few cerebral areas damaged by stroke seem to be linked to certain urinary troubles, but new studies with a higher methodological quality are required to confirm this result.


Asunto(s)
Síntomas del Sistema Urinario Inferior/etiología , Accidente Cerebrovascular/complicaciones , Animales , Disuria/etiología , Humanos , Proyectos de Investigación , Accidente Cerebrovascular/fisiopatología , Vejiga Urinaria Hiperactiva/etiología , Incontinencia Urinaria/etiología , Retención Urinaria/etiología
3.
Prog Urol ; 25(11): 642-8, 2015 Sep.
Artículo en Francés | MEDLINE | ID: mdl-26094097

RESUMEN

UNLABELLED: Intradetrusor injection of botulinum toxin is one of the second-line therapy of neurologenic detrusor overactivity. GOAL OF THE STUDY: In 26% to 66% of the cases, intradetrusor injection of botulinum toxin is inefficient in order to reduce overactive bladder symptoms and/or overactive detrusor. The objective of this study is to determine whether it exists a link between the efficacy of the first IDBT and the length of neurological detrusor overactivity symptoms. METHODS: Retrospective study on 79 patients which have a first intradetrusor injection of botulinum toxin between January 2001 and December 2013. Inclusion criteria were patients older than 18 and having neurological detrusor overactivity. RESULTS: There is no significant difference of intradetrusor injection of botulinum toxin efficacy according to duration of urinary symptoms in the general neurologigal population (multiple sclerosis, spinal cord injury, spinal cord compression, ischemic pathology, infectious pathology) with the mean age being 46 years. On the contrary, the length of evolution of neurological detrusor overactivity symptoms before the intradetrusor botox injection therapy and the efficiency of the first intradetrusor injection of botulinum toxin seem to be correlated with negative results in patients with multiple sclerosis. CONCLUSIONS: The duration of urinary symptoms is a predictive factor of primary failure of intradetrusor injection of botulinum toxin in multiple sclerosis patients, in univariate analysis.


Asunto(s)
Inhibidores de la Liberación de Acetilcolina/uso terapéutico , Toxinas Botulínicas Tipo A/administración & dosificación , Vejiga Urinaria Neurogénica/tratamiento farmacológico , Vejiga Urinaria Hiperactiva/tratamiento farmacológico , Administración Intravesical , Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento
4.
Cancer Radiother ; 18(7): 666-71, 2014 Nov.
Artículo en Francés | MEDLINE | ID: mdl-24981411

RESUMEN

PURPOSE: To assess microscopic extensions of head and neck squamous cell carcinomas aiming at a proposal for target volumes of radiation therapy. MATERIALS AND METHODS: Surgical specimens were prospectively analysed macroscopically and microscopically. Tumour borders were identified per macroscopic visual examination and inked on stained slides. Then microscopic implants (perineural or lymphatic involvement, or in situ carcinomas) were looked for with an optic microscope in the macroscopic healthy tissue surrounding the tumour. The maximal length from tumour border was correlated with the maximal length of macroscopically healthy tissues assessable. RESULTS: Twenty-one specimens were analysed and 12 were locally advanced tumours. Mean and median maximal microscopic extensions were 2.9 and 1.0mm (0-15mm), respectively. The 90th and 95th percentiles were 5 and 11mm, respectively. The ratio between healthy tissue length and maximal microscopic tumour extension was 10%. No correlation was found with tumour grade or volume. CONCLUSION: The presence of microscopic tumour was unlikely after 5mm from macroscopic tumour (≤5% of patients in this series) but should be assessed along with other histoclinical factors and particularities of tumour behaviour by anatomic site. A rigorous terminology should authorize a relevant appreciation of local risk of recurrence, particularly in adjuvant setting or for clinical target volume definition. Larger and more homogenous confirmatory series are needed.


Asunto(s)
Carcinoma de Células Escamosas/patología , Carcinoma de Células Escamosas/radioterapia , Neoplasias de Cabeza y Cuello/patología , Neoplasias de Cabeza y Cuello/radioterapia , Planificación de la Radioterapia Asistida por Computador/métodos , Adulto , Anciano , Carcinoma de Células Escamosas/cirugía , Femenino , Neoplasias de Cabeza y Cuello/cirugía , Humanos , Masculino , Microscopía , Persona de Mediana Edad , Invasividad Neoplásica , Estudios Prospectivos , Radioterapia Conformacional , Coloración y Etiquetado
5.
Placenta ; 35(8): 611-7, 2014 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-24862569

RESUMEN

OBJECTIVE: to test the hypothesis that placental fetal thrombotic vasculopathy (FTV) is associated with obstetric complications and predisposes the child to unfavorable outcomes. METHODS: 54 placentas with FTV lesions and 100 placentas without FTV lesions were collected over a 5-year period at the Croix-Rousse Pathology Department. Clinical findings including maternal, fetal, neonatal condition and pediatric outcome up to three years were collected for each case and control observation. The statistical analyses were assessed with Wald's chi-square derived from conditional logistic regression modeling. RESULTS: FTV was associated with a significantly higher frequency of obstetric complications: (pregnancy-induced hypertension (OR 3.620, CI 1.563-8.385), preeclampsia (OR 3.674, CI 1.500-8.998), emergency delivery procedures (OR 3.727, CI 1.477-9.403), cesarean sections (OR 2.684, CI 1.016-7.088)), poor fetal condition (intrauterine growth restriction (IUGR) (OR 5.440, CI 2.007-14.748), nonreassuring fetal heart tracing (OR 6.062, CI 2.280-16.115), difficulties in immediate ex utero adaptation (OR 3.416, CI 1.087-10.732)) and perinatal or early childhood demise (OR 3.043, CI 1.327-6.978). On pathological examination, FTV was associated with marginal cord insertion (OR 3.492, CI 1.350-9.035), cord stricture and hypercoiled cord (OR 3.936, CI 1.209-12.813). Thromboembolic events were significantly more frequent in cases with FTV (OR 2.154, CI 1.032-5.622). Neurological complications within the first 3 years of life were also more frequent in the FTV group compared to the control group, but this association was not statistically significant. CONCLUSIONS: FTV is associated with maternal complications, pathological findings in the placenta, especially gross cord abnormalities, IUGR, and poor perinatal or early childhood outcome. It may also predispose children to somatic thromboembolic events.


Asunto(s)
Enfermedades Fetales , Placenta/patología , Trombosis/complicaciones , Adolescente , Adulto , Preescolar , Discapacidades del Desarrollo/epidemiología , Femenino , Enfermedades Fetales/epidemiología , Enfermedades Fetales/patología , Estudios de Seguimiento , Francia/epidemiología , Humanos , Recién Nacido , Mortalidad Perinatal , Embarazo , Complicaciones del Embarazo/epidemiología , Resultado del Embarazo , Prevalencia , Estudios Retrospectivos , Trombosis/epidemiología , Trombosis/patología , Adulto Joven
6.
Prog Urol ; 23(4): 244-8, 2013 Apr.
Artículo en Francés | MEDLINE | ID: mdl-23544981

RESUMEN

OBJECTIVE: The objective was to translate and linguistically validate in classical Arabic; the French version of the Urinary Symptom Profile (USP), the scale adapted to vesico-sphincter disorders. PATIENTS AND METHODS: Prospective study of 30 patients suffering the vesico-sphincter disorders. The translation was obtained by the method: translation back-translation. Patients completed the final questionnaire on day 0 and day 15. The feasibility, acceptability, internal consistency using Cronbach's alpha and test-retest repeatability by the interclass correlation coefficient (ICC) with the confidence interval (CI) were studied. RESULT: The sample consisted of 30 subjects including 20 men (66.6%) and 10 women (33.3%). The mean age was 48±18, 14 years ranging from 25 to 70 years. The questionnaire was feasible and acceptable. The Cronbach's alpha of the three dimensions, urinary stress incontinence, overactive bladder and voiding difficulties was respectively 0.9880, 0.9774 and 0.9683, respectively; the ICC was 0.9762 (95% CI: 0.9307-0.9919), 0.9558 (CI 95%: 0.8738-0.9849) and 0.9385 (95% CI: 0.8274-0.9789). CONCLUSION: The Arabic version of the classic USP had excellent internal consistency and excellent repeatability enable a full assessment of all urinary disorders and their severity.


Asunto(s)
Disuria/diagnóstico , Encuestas y Cuestionarios , Vejiga Urinaria Hiperactiva/diagnóstico , Incontinencia Urinaria/diagnóstico , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Traducciones
7.
Prog Urol ; 20(6): 450-7, 2010 Jun.
Artículo en Francés | MEDLINE | ID: mdl-20538210

RESUMEN

INTRODUCTION: The bladder deformations observed in the neurogenic bladders are frequent, particularly in the "upper motor neuron" bladder type (paraplegia, multiple sclerosis). We wanted to verify the predictive factors of such damage and particularly, if the urodynamic typology intervened in their genesis by using the model of cauda equina syndrome and conus medullaris lesions. PATIENTS AND METHODS: We have studied retrospectively the presence of cystographic bladder deformations at patients with neurogenic bladder due to cauda equina syndrome or conus medullaris lesion according to their urodynamic status: either overactive or acontractile detrusor. RESULTS: Of 68 patients, (mean age 47.2 years), 34 had an overactive and 34 an acontractile detrusor. The presence of bladder deformations was associated with an overactive detrusor (p=0.04). However, 50% of the patients with acontractile detrusor had bladder deformations, and those deformations were associated with male sex, and this excluding urologic obstruction. CONCLUSION: This study demonstrates the existence of bladder deformations in the hypoactive lower motor neuron neurogenic bladder type. If the bladder deformations seem more frequent in the overactive neurogenic bladder type, their specific and repeated search is also necessary during the follow-up of the lower motor neuron neurogenic bladder type.


Asunto(s)
Polirradiculopatía/complicaciones , Compresión de la Médula Espinal/complicaciones , Vejiga Urinaria Neurogénica/complicaciones , Vejiga Urinaria/anomalías , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Adulto Joven
8.
Ann Fr Anesth Reanim ; 29(4): 269-73, 2010 Apr.
Artículo en Francés | MEDLINE | ID: mdl-20138733

RESUMEN

OBJECTIVE: To evaluate the feasibility and reliability of the flexible laryngeal mask airway (LMA flexible) use during scalp skin harvesting for surgical reparation of burn sequella. STUDY DESIGN: Observational prospective descriptive study. PATIENTS AND METHODS: Following local ethic committee approval, 26 patients were included in the study during their preanaesthesia visit. The general anaesthesia induction of each patient was followed by the insertion of a LMA flexible. The number of attempts required to insert the mask and the procedure were documented. The oropharyngeal leak pressure, expired tidal volume and end tidal CO(2) were recorded in five different head positions (neutral, hyperflexion, hyperextension, right and left rotation) at the start and end of surgical procedure. In all ten study periods of 2-3 min each were evaluated. RESULTS: The airway device was inserted easily in all patients. While similar in four of the five head positions (neutral: 27.9+/-8.1 cmH(2)O, hyperextension, left and right rotation), the oropharyngeal leak pressure was significantly higher in the hyperflexion position (33.3+/-7.3 cmH(2)O). The end tidal volume was stable in all positions except hyperflexion (419+/-114 ml). While this value was significantly lower than the 471+/-68 ml recorded in the neutral position, it remained greater than 7 ml/kg. No significant change was observed for end tidal CO(2) for the ten study periods. CONCLUSION: The use of LMA flexible during surgical burn repair procedures, including head mobilisation for the harvesting of scalp skin grafts is feasible.


Asunto(s)
Quemaduras/cirugía , Cabeza/fisiología , Máscaras Laríngeas , Cuero Cabelludo/cirugía , Adulto , Anciano , Presión del Aire , Anestesia , Dióxido de Carbono/sangre , Estudios de Factibilidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Postura , Medicación Preanestésica , Trasplante de Piel , Volumen de Ventilación Pulmonar , Adulto Joven
10.
Gynecol Obstet Fertil ; 36(7-8): 779-81, 2008.
Artículo en Francés | MEDLINE | ID: mdl-18653372

RESUMEN

We report a case of T1N0 left breast cancer in a 47-year-old woman. Histopathological examination of a non sentinel axillary lymph node showed a pigmentation due to a decorative tattoo of the arm. The authors discuss a new concept: Axillary Reverse Mapping.


Asunto(s)
Neoplasias de la Mama/patología , Colorantes/análisis , Ganglios Linfáticos/patología , Tatuaje/efectos adversos , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/radioterapia , Terapia Combinada , Femenino , Humanos , Persona de Mediana Edad
11.
Ann Chir Plast Esthet ; 50(3): 237-41, 2005 Jun.
Artículo en Francés | MEDLINE | ID: mdl-15963845

RESUMEN

Choriocarcinoma are germinal tumors from testicular cells in men or foetal trophoblast in women. Cutaneous metastasis are very rare. The authors report a case of angioma-like tumor in a 22-year-old man which was a cutaneous metastasis of a testicular carcinoma. Diagnosis was of course histologic. Testicular echography showed an intra testicular tumor, pulmonary and abdominal CT-scan showed multiple metastases. Orchidectomy and retroperitoneal lymphadenectomy were performed before a general chemotherapy. Patient died 14 months after diagnosis. Only 11 cases of cutaneous metastasis of choriocarcinoma were found in the world literature (7 men and 4 women). All cases showed diagnosis trap for plastic surgeon.


Asunto(s)
Coriocarcinoma/secundario , Neoplasias Nasales/secundario , Neoplasias Cutáneas/secundario , Neoplasias Testiculares/patología , Adulto , Coriocarcinoma/cirugía , Resultado Fatal , Humanos , Neoplasias Pulmonares/secundario , Escisión del Ganglio Linfático , Masculino , Neoplasias Nasales/cirugía , Orquiectomía , Neoplasias Cutáneas/cirugía , Neoplasias Testiculares/cirugía , Tomografía Computarizada por Rayos X
12.
Arch Virol ; 149(2): 365-77, 2004 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-14745601

RESUMEN

We described the construction of a recombinant filamentous phage displaying on its surface the immunodominant site of VP1 protein of foot-and-mouth disease virus (FMDV). The coding sequence was inserted at the amino-terminus of the major coat protein pVIII via a spacer. The hybrid phage proved to be antigenic as it was recognized by polyclonal and monoclonal anti FMDV sera. In two experiments involving immunisation of guinea-pigs with the recombinant phage, a low antibody response was generated. This suggests a possible role for phage displayed peptides in inducing anti FMDV immunity and the possibility of further development is discussed.


Asunto(s)
Virus de la Fiebre Aftosa/genética , Virus de la Fiebre Aftosa/inmunología , Epítopos Inmunodominantes/genética , Epítopos Inmunodominantes/inmunología , Inovirus/genética , Secuencia de Aminoácidos , Animales , Anticuerpos Monoclonales/inmunología , Anticuerpos Antivirales/inmunología , Especificidad de Anticuerpos , Antígenos Virales/química , Antígenos Virales/genética , Antígenos Virales/inmunología , Secuencia de Bases , Ensayo de Inmunoadsorción Enzimática , Virus de la Fiebre Aftosa/química , Vectores Genéticos/genética , Cobayas , Sueros Inmunes/inmunología , Epítopos Inmunodominantes/química , Datos de Secuencia Molecular , Pruebas de Neutralización , Sistemas de Lectura Abierta/genética , Conejos
13.
Vet Rec ; 150(19): 598-601, 2002 May 11.
Artículo en Inglés | MEDLINE | ID: mdl-12036242

RESUMEN

In October 2000, bluetongue virus was detected on the French island of Corsica. The disease was also reported in Sardinia, Calabria, Sicily and on the Spanish islands of Majorca and Minorca. This paper describes the use of molecular techniques for a rapid identification and serotype determination of serotype 2 of the virus. The nucleotide sequences of segments 2 and 7 of the genome of the Corsican strain were determined and its phylogenetic relationships are described.


Asunto(s)
Virus de la Lengua Azul/genética , ADN Viral/análisis , Enfermedades de las Ovejas/virología , Animales , Virus de la Lengua Azul/clasificación , Brotes de Enfermedades , Europa (Continente)/epidemiología , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa/veterinaria , Análisis de Secuencia de ADN , Serotipificación , Ovinos , Enfermedades de las Ovejas/genética
14.
Ann Readapt Med Phys ; 44(6): 326-32, 2001 Jul.
Artículo en Francés | MEDLINE | ID: mdl-11587674

RESUMEN

PURPOSE: The purposes of this study were to evaluate the prognostical factors of reflex sympathetic dystrophy in stroke patients in attempt to improve the Perrigot prognostical score. MATERIAL AND METHOD: This prospective study included 28 stroke patients with reflex sympathetic dystrophy. An initial clinical assessment including Perrigot score was made at the time of admission (before the end of the first month) and a second evaluation of reflex sympathetic dystrophy at the end of the third month. Patients were assessed using Motricity Index, Ashworth scale, de Bats grading (for glenohumeral alignment), Labrousse criteria (for reflex sympathetic dystrophy severity), and MADRS depression scale. Sensory deficit and unilateral neglect were noted. RESULTS: The length of stay in acute ward was 16 days. The Perrigot score was correlated with the reflex sympathetic dystrophy severity (r = 0.7, p < 0.0001). It predicted the result of therapy. A significant correlation was found between reflex sympathetic dystrophy severity and motor deficit (r = -0.591, p = 0.0007) and spasticity (p < 0.05). No relation was found with stroke side, unilateral neglect, depression or shoulder subluxation. It wasn't possible to improve the Perrigot prognostical score. CONCLUSION: Perrigot score predict reflex sympathetic dystrophy severity and the result of therapy. The shoulder subluxation which is not included in this score appears to be not predictive. Shoulder subluxation is simply a marker of a severe paresis.


Asunto(s)
Distrofia Simpática Refleja/diagnóstico , Índice de Severidad de la Enfermedad , Accidente Cerebrovascular/complicaciones , Anciano , Interpretación Estadística de Datos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pronóstico , Estudios Prospectivos
15.
Vet Res ; 32(1): 81-6, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11254180

RESUMEN

A serological survey was carried out on French cattle to establish a reference pattern of residual vaccine antibodies and non-specific reactions against the foot-and-mouth disease virus 6 years after the ban on vaccination and in the absence of any foot-and-mouth disease outbreak. Most of the multi-vaccinated cattle still displayed high titres of antibodies and up to 50% of those which had received a single injection still had antibodies. Non-specific reactors were also recorded among animals born during and after 1991. Most of them displayed low titres close to the threshold. Sheep were also tested and, as for cattle, 4.6% of non-specific reactors were recorded, with titres close to the threshold for two-thirds of them. As part of these animals have been resampled and retested, sera revealed negative confirming that these animals are true non-specific reactors. Serological testing as a mean of FMD control should take these facts into account.


Asunto(s)
Anticuerpos Antivirales/sangre , Aphthovirus/inmunología , Enfermedades de los Bovinos/epidemiología , Fiebre Aftosa/epidemiología , Enfermedades de las Ovejas/epidemiología , Animales , Anticuerpos Antivirales/inmunología , Bovinos , Enfermedades de los Bovinos/inmunología , Brotes de Enfermedades/prevención & control , Brotes de Enfermedades/veterinaria , Fiebre Aftosa/inmunología , Francia/epidemiología , Pruebas de Neutralización/veterinaria , Ovinos , Enfermedades de las Ovejas/inmunología , Vacunación/veterinaria , Vacunas Virales/inmunología
16.
J Pharmacol Exp Ther ; 294(3): 1063-9, 2000 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-10945860

RESUMEN

Anti-cytochrome P450 (CYP)1A2 autoantibodies are found in dihydralazine-induced hepatitis, and CYPs2B and 2C have been shown to follow vesicular flow to the plasma membrane (PM). However, it is unknown whether other CYPs follow this route, whether NADPH-CYP reductase is present on the hepatocyte surface, and whether autoimmune hepatitis-inducing drugs increase PM CYPs. In this study, we determined the transmembrane topology and transport of CYPs1A in rat hepatocytes. In cultured hepatocytes, colchicine and other vesicular transport inhibitors decreased PM CYPs1A assessed by flow cytometry. Colchicine administration also decreased PM CYPs1A in vivo. Pulse chase experiments with [(35)S]methionine showed that only the newly synthesized CYP molecules are transferred to the PM, whereas microsomal CYP1A2 was stably radiolabeled for several hours. In contrast, radiolabeled CYP1A2 reached the PM and disappeared from the PM with half-lives of less than 30 min. Confocal microscopy, biotinylation, and coimmunoprecipitation experiments showed that PM CYPs1A and CYP reductase are present on the cell surface, and that the reductase is closely associated with PM CYPs. Exposure of whole cells to an anti-CYP1A1/2 antibody at 4 degrees C, before five washes and PM preparation, abolished PM CYPs1A-supported monooxygenase activity, indicating that PM CYPs are mostly located on the external surface. Dihydralazine and other CYPs1A inducers increased PM CYPs1A. In conclusion, newly synthesized CYPs1A follow vesicular flow to the outside of the PM, and NADPH-CYP reductase also is located on the hepatocyte surface. Dihydralazine administration increases PM CYP1A2, its autoimmune target.


Asunto(s)
Vesículas Cubiertas/metabolismo , Citocromo P-450 CYP1A1/metabolismo , Citocromo P-450 CYP1A2/metabolismo , Hígado/metabolismo , Animales , Especificidad de Anticuerpos , Transporte Biológico , Biotinilación , Membrana Celular/enzimología , Membrana Celular/metabolismo , Células Cultivadas , Citocromo P-450 CYP1A1/biosíntesis , Citocromo P-450 CYP1A1/inmunología , Citocromo P-450 CYP1A2/biosíntesis , Citocromo P-450 CYP1A2/inmunología , Citometría de Flujo , Hígado/citología , Hígado/enzimología , Masculino , Microscopía Confocal , NADPH-Ferrihemoproteína Reductasa/metabolismo , Pruebas de Precipitina , Ratas , Ratas Sprague-Dawley
17.
Theriogenology ; 50(1): 109-16, 1998 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-10734479

RESUMEN

The aim of this study was to investigate whether foot and mouth disease virus (FMDV) interacts with in vitro produced (IVP) bovine embryos. One milliliter of a suspension of FMDV (2 x 10(7) TCID50/mL) was added to several batches of these embryos 7 d after in vitro fertilization, by which time they had either developed to the morula/blastocyst stage (n = 256) or degenerated (n = 260). Six experiments were performed in which developed or degenerated batches of embryos were incubated with FMDV for periods of 1 h (3), 2 h (2) or 4h (1). After this, the embryos were washed 10 times according to the International Embryo Transfer Society (IETS), then pooled and ground up to form a suspension, and assayed on cell cultures for FMDV. The cell cultures were observed daily for cytopathic effects for 3 d post exposure. In addition to the cell culture method, the polymerase chain reaction (PCR) technique was used to assay for the presence of the virus in the washing fluids. Assays for FMDV were also conducted on the first and second wash and on the pooled sample constituting the eight, ninth and tenth wash. With the exception of the second wash from a batch of embryos exposed to FMDV for 2 h, all samples of the first and second wash produced FMDV cytopathic effects, but none occurred with the pooled samples of the 8th, 9th and 10th wash. FMDV was also isolated from all but 1 of the batches of embryos after 1 h of incubation, from 1 of 4 batches after 2 h of incubation and from all batches after 4 h incubation. By contrast, the presence of virus could not be demonstrated by PCR based on the technique used here. These results show that 7 d old IVP bovine embryos can retain FMDV after washing, unlike in vivo-derived embryos, which do not appear to carry risks of FMDV transmission when washed according to IETS recommendations. Stricter controls are, therefore, necessary when using IVP embryos from cattle in a non-FMD-free zone in domestic or international trade.


Asunto(s)
Aphthovirus , Bovinos/embriología , Bovinos/virología , Fertilización In Vitro/veterinaria , Animales , Efecto Citopatogénico Viral
19.
J Gen Virol ; 77 ( Pt 1): 37-48, 1996 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-8558127

RESUMEN

Restriction mapping and the determination of scattered nucleotide sequences have permitted a description of the global structure and evolutionary affinities of the canine herpesvirus (CHV) genome. The global structure closely resembles that of the totally sequenced genomes of varicella-zoster virus and equine herpesvirus 1 (EHV-1) in having a 37 bp inverted repeat flanking a long unique region (UL) of approximately 100,000 bp, and a 10,100-10,700 bp inverted repeat flanking a short unique region (U8) of roughly 7,400-8,600 bp. On the basis of the sequences obtained, 35 homologues to previously identified herpesvirus gene products were found in UL and the major inverted repeat, and the level of the similarities indicated that CHV belongs to the genus Varicellovirus. Within the genus, CHV appears to be most closely related to EHV-1, pseudorabies virus and feline herpesvirus. Surprisingly, genes for both subunits of the viral ribonucleotide reductase were found to be missing from their equivalent place in other herpesvirus genomes. Either they have been translocated to another position in the CHV genome or, we think more likely, they have been lost.


Asunto(s)
Genoma Viral , Herpesvirus Cánido 1/genética , Secuencias Repetitivas de Ácidos Nucleicos , Secuencia de Aminoácidos , Animales , Secuencia de Bases , Células Cultivadas , Secuencia Conservada , ADN Viral , Perros , Datos de Secuencia Molecular , Ribonucleótido Reductasas/genética
20.
Virus Res ; 39(2-3): 341-54, 1995 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-8837896

RESUMEN

Multiple sequence alignments of evolutionarily related proteins are finding increasing use as indicators of critical amino acid residues necessary for structural stability or involved in functional domains responsible for catalytic activities. In the past, a number of alignments have provided such information for the herpesviral thymidine kinases, for which three-dimensional structures are not yet available. We have sequenced the thymidine kinase gene of a canine herpesvirus, and with a multiple alignment have identified amino acids preferentially conserved in either of two taxons, the genera Varicellovirus and Simplexvirus, of the subfamily Alphaherpesvirinae. Since some regions of the thymidine kinases show otherwise elevated levels of substitutional tolerance, these conserved amino acids are candidates for critical residues which have become fixed through selection during the evolutionary divergence of these enzymes. Several pairs with distinctive patterns of distribution among the various viruses occur in or near highly conserved sequence motifs previously proposed to form the catalytic site, and we speculate that they may represent interacting, co-ordinately variable residues.


Asunto(s)
Alphaherpesvirinae/enzimología , Secuencia Conservada , Herpesvirus Cánido 1/enzimología , Timidina Quinasa/genética , Proteínas Virales/genética , Secuencia de Aminoácidos , Animales , Secuencia de Bases , Células Cultivadas , ADN Viral , Perros , Humanos , Datos de Secuencia Molecular , Sistemas de Lectura Abierta , Homología de Secuencia de Aminoácido , Timidina Quinasa/química , Proteínas Virales/química
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA