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1.
Ann Hepatol ; 17(1): 98-103, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29311394

RESUMEN

INTRODUCTION: We sought to describe: 1) The influence of orthotopic liver transplantation (OLT) on exercise capacity, pulmonary function and respiratory muscle strength after surgery, 2) The relationship between exercise capacity and symptoms of anxiety and depression. MATERIAL AND METHODS: This is a prospective follow up study conducted with patients submitted to OLT. All patients were assessed before and 1 month after surgery through measurements: six minute walk test (6MWT), 6 min step test (6MST) and HADS (Hospital Anxiety and Depression Scale). FEV1% (forced expiratory volume), maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP) were measured in the pre-operative and on 1st, 3rd, 5th day and 1 month after surgery. RESULTS: In 77 patients , 6MWD improved 20.2 m (95%CI 8.1-32.3) and 6MST improved 7.8 steps after surgery (95%CI 3.9-11.6). Change in 6 MWD and 6 MST did not correlated with change HADS. The FEV1% at each time point were 88.8 ± 21.3 before surgery, 32.9 ± 9.9 on 1st day, 39.6 ± 11.5 on 3rd day, 46 ± 12.1 on 5th day and 86.6 ± 21.1 one month after surgery. MIP and MEP values at each time point were -67.4 ± 23.2 and 79.7 ± 26 before surgery, -30.8 ± 12.3 and 36.4 ± 15.4 on 1st day, -38.6 ± 14.1 and 43.8 ± 17 on 3rd day, -45.8 ± 15.9 and 49.7 ± 18.7 on 5th day and -67.1 ± 29.4 and 80.9 ± 23.9 one month after surgery. CONCLUSION: Exercise capacity was modestly increased after OLT without any correlation with symptoms of anxiety and depression. Pulmonary function and respiratory muscle strength decreased immediately after liver transplantation, and progressively recovered, returning to baseline values after 1 month.


Asunto(s)
Enfermedad Hepática en Estado Terminal/cirugía , Tolerancia al Ejercicio , Trasplante de Hígado , Pulmón/fisiopatología , Respiración , Músculos Respiratorios/fisiopatología , Adulto , Enfermedad Hepática en Estado Terminal/diagnóstico , Enfermedad Hepática en Estado Terminal/fisiopatología , Femenino , Estudios de Seguimiento , Volumen Espiratorio Forzado , Humanos , Masculino , Presiones Respiratorias Máximas , Persona de Mediana Edad , Fuerza Muscular , Estudios Prospectivos , Recuperación de la Función , Factores de Tiempo , Resultado del Tratamiento , Prueba de Paso
2.
Respiration ; 94(3): 272-278, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28738386

RESUMEN

BACKGROUND: Postoperative respiratory complications (PRCs) are common after liver transplantation (LT) and contribute significantly to the related morbidity and mortality. OBJECTIVE: The aim of this paper was to determine the incidence of PRCs after LT and the value of simple exercise capacity measures as independent predictors of PRCs. METHODS: We conducted a prospective cohort study of consecutive adults submitted to LT at a University Hospital in Fortaleza Brazil from March 2013 to March 2015. At baseline, exercise capacity was assessed with the 6-minute walk test (6MWT) and the 6-minute step test (6MST), lung function was tested by spirometry, and respiratory muscle strength was measured by maximal respiratory pressure. Additional relevant pre- and intraoperative data were collected through interview and chart review, and their association with the incidence of PRCs was evaluated. RESULTS: The study included 100 subjects, 44% of whom presented at least 1 of the PRCs. In the univariate analysis, poor 6MST and 6MWT results and a longer preoperative cold ischemia time were associated with PRCs. The logistic regression analysis showed that PRCs were less likely to occur when preoperative walking distances were longer: the odds ratio (95% CI) was reduced to 0.589 (0.357-0.971) for each 50 m walked (p = 0.03). Likewise, PRCs were more likely to occur in patients with longer preoperative cold ischemia times: the odds ratio (95% CI) increased to 1.008 (1.002-1.015) for each minute (p = 0.01). CONCLUSION: The incidence of PRCs is high in LT patients. A prolonged cold ischemia time and preoperative 6MWT results were independent predictors of PRCs in this patient population.


Asunto(s)
Tolerancia al Ejercicio , Trasplante de Hígado , Complicaciones Posoperatorias/epidemiología , Trastornos Respiratorios/epidemiología , Adulto , Brasil/epidemiología , Enfermedad Hepática en Estado Terminal , Prueba de Esfuerzo , Femenino , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Estudios Prospectivos
3.
Ann Hepatol ; 14(5): 688-94, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26256897

RESUMEN

INTRODUCTION: The aim of this study is to evaluate the risk factors for acute kidney injury (AKI) and 30-day mortality after liver transplantation. MATERIAL AND METHODS: This is a retrospective cohort of consecutive adults undergoing orthotopic liver transplantation (OLT) at a referral hospital in Brazil, from January 2013 to January 2014. Risk factors for AKI and death were investigated. RESULTS: A total 134 patients were included, with median age of 56 years. AKI was found in 46.7% of patients in the first 72 h after OLT. Risk factors for AKI were: viral hepatitis (OR 2.9, 95% CI = 1.2-7), warm ischemia time (OR 1.1, 95% CI = 1.01-1.2) and serum lactate (OR 1.3, 95%CI = 1.02-1.89). The length of intensive care unit (ICU) stay was longer in AKI group: 4 (3-7) days vs. 3 (2-4) days (p = 0.001), as well as overall hospitalization stay: 16 (9-26) days vs. 10 (8- 14) days (p = 0.001). The 30-day mortality was 15%. AKI was an independent risk factor for mortality (OR 4.3, 95% CI = 1.3-14.6). MELD-Na ≥ 22 was a predictor for hemodialysis need (OR 8.4, 95%CI = 1.5-46.5). Chronic kidney disease (CKD) was found in 36 patients (56.2% of AKI patients). CONCLUSIONS: Viral hepatitis, longer warm ischemia time and high levels of serum lactate are risk factors for AKI after OLT. AKI is a risk factor for death and can lead to CKD in a high percentage of patients after OLT. A high MELD-Na score is a predictor for hemodialysis need.


Asunto(s)
Lesión Renal Aguda/etiología , Lesión Renal Aguda/mortalidad , Trasplante de Hígado/efectos adversos , Trasplante de Hígado/mortalidad , Lesión Renal Aguda/diagnóstico , Lesión Renal Aguda/terapia , Biomarcadores/sangre , Brasil , Distribución de Chi-Cuadrado , Femenino , Mortalidad Hospitalaria , Humanos , Ácido Láctico/sangre , Tiempo de Internación , Modelos Logísticos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Oportunidad Relativa , Diálisis Renal , Insuficiencia Renal Crónica/etiología , Estudios Retrospectivos , Medición de Riesgo , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento , Regulación hacia Arriba , Isquemia Tibia/efectos adversos , Isquemia Tibia/mortalidad
4.
Transplant Proc ; 55(1): 178-183, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36517285

RESUMEN

BACKGROUND: Physical exercise is prescribed in populations with chronic diseases, but data are scarce in the liver transplantation (LT) setting. OBJECTIVE: The aim of this study was to evaluate changes in forced expiratory volume in the first second, forced vital capacity, maximal inspiratory pressure, maximal expiratory pressure, 6-minute walking test (6MWT), 6-minute step test (6MST), Duke Activity Status Index, VO2 (mL/kg/min), and health-related quality of life (in patients submitted to a rehabilitation program, comprising physical exercise training, breathing techniques, and educational sessions after LT. METHODS: This cohort study enrolled patients to an 8-week period of thrice weekly comprehensive supervised rehabilitation program after 1 month of LT. A nonrandomized control cohort of LT patients were selected to match the rehabilitation group based on specific demographic data and severity of disease. RESULTS: The rehabilitation group, compared with the control group, showed a significant improvement in respiratory parameters (forced vital capacity [0.33L vs 0.13L,P < .01]); exercise capacity (6MWT and 6MST 71.1 vs 34.1 meters; and 30.5 vs 7.5 steps; respectively P < .01); Duke Activity Status Index scores and VO2 (21.3 vs 10.2 and 9 vs 4.3; respectively P < .01); respiratory muscle strength (maximal inspiratory pressure 21.1 vs 15.1 cmH2O and maximal expiratory pressure 21.2 vs 10.2 cmH2O; P < .01); and quality of life (SF-36 physical component summary 12.4 vs 2.9 P < .01). CONCLUSION: These data suggest that improvements in physical fitness, respiratory parameters, and quality of life are achieved with a comprehensive rehabilitation program initiated early after LT.


Asunto(s)
Trasplante de Hígado , Calidad de Vida , Humanos , Estudios de Cohortes , Respiración , Capacidad Vital , Músculos Respiratorios , Ejercicios Respiratorios/métodos , Tolerancia al Ejercicio
5.
Sante ; 19(2): 87-93, 2009.
Artículo en Francés | MEDLINE | ID: mdl-20031516

RESUMEN

In Mali, there were 4508 new cases of tuberculosis in 2003, and 5222 in 2006. Tuberculosis (TB) is thus an important public health problem, decreasing the physical, financial and social capital of individuals, their families and society. Because responses to TB have not yet applied a sufficiently integrated approach that can improve patients' access to quality care, this FORESA project advocates a patient-centered approach. Before any intervention, FORESA thus sought to analyse the situation of TB in Mali and responses to it. The study aims to analyse the discourse about and popular representations of TB (its forms, its signs), the situations in which people are exposed to it or transmit it, and popular practices related to its prevention and the experience of having it. This qualitative, descriptive and analytical study includes a literature review, in-depth interviews with opinion leaders, community health workers and TB patients, focus groups, and the observations of practices. The interviews were recorded, transcribed, and analysed. Subjects provided informed consent to participation. This study showed that: * the terms for TB in local languages (Bambara, Dogon and Fulfuldé) include white cough, big cough, and long cough; * These communities differentiate between 2 main forms of cough (simple and wet); * TB is perceived as a transmissible disease, a disease of contact with a contaminated body or objects; * TB is seen as a serious, contagious, hereditary, shameful disease that may result from the transgression of social norms; * The prevention of TB consists of avoiding people who have the disease or transmitting factors; * Therapeutic remedies, in order, are self-medication, the use of traditional healers, and finally visits to health centres; * The population wants more information about TB and be involved in the fight against it. This study shows the many points of convergence about TB nosology, etiology and therapy between the Mopti population and other groups in Mali (including the Mande, Senoufo and Soso), between the population of Mali and some ethnic groups in Burkina Faso (such as the Dioula, Bobo, Tiéfo Vigué), and between the population of Mali and, Burkina Faso and others in Africa (Gambia, Nigeria, South Africa, etc.). There is also a difference between popular knowledge about TB and biomedical knowledge. The population does not know that TB is transmitted mainly, even exclusively, by nasal droplets or that patients are no longer contagious after two weeks of treatment. The widespread dissemination of this information may have a positive effect, reducing stigmatization and improving access to treatment. Mali must strengthen the skills of all participants in the fight against tuberculosis, to strengthen their framework and to monitor and evaluate their activities.


Asunto(s)
Tuberculosis , Antropología , Accesibilidad a los Servicios de Salud , Humanos , Malí , Calidad de la Atención de Salud , Factores Socioeconómicos , Tuberculosis/economía , Tuberculosis/epidemiología , Tuberculosis/terapia
6.
Expert Rev Gastroenterol Hepatol ; 13(9): 821-825, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31382786

RESUMEN

Introduction: Since the pioneering work of J. J. Thomson on magnetic deflection of charged particles, mass spectrometry (MS) has become the most progressive clinical tool by continuously providing new applications in medical research. In hepatocellular carcinoma (HCC), MS can be used from surveillance in early stages of the disease to constant evaluation of effective treatments. Areas covered: This Special Report highlights the groundbreaking possibilities of mass spectrometry clinical application in the mainstream to evaluate HCC development and progression. Expert opinon: MS has been employed to understand a myriad of liver diseases, such as the identification of early biomarkers in cirrhosis and HVB and HVC, as well as metabolic alterations of lipidic imbalance in HCC due to fatty liver disease. In an integrative point-of-view, researchers worldwide are looking for molecular signatures that may represent more faithfully the complex scenario of the onset and progression of HCC. Following the steps of MELD score (Model of End-stage Liver Disease), which evaluates biochemical dysfunction of end-stage liver diseases, the necessity to use innovative attempts to pursue a molecular-MEaLD (mMEaLD - molecular Model for Early Liver Disease), shifting MS to the upstream and from the lab facilities into the mainstream, inside the surgery room.


Asunto(s)
Carcinoma Hepatocelular/diagnóstico , Neoplasias Hepáticas/diagnóstico , Espectrometría de Masas , Humanos
7.
Arq Gastroenterol ; 56(3): 252-255, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31633720

RESUMEN

BACKGROUND: Fatigue is highly prevalent in end stage liver disease, the studies about its association with exercise capacity in cirrhotic patients before liver are scarse. OBJECTIVE: In this study, we evaluated fatigue in 95 in end stage liver disease patients awaiting transplantation, compared to healthy volunteers, and tested the association between exercise capacity and fatigue. METHODS: Cross-sectional study of patients with chronic liver disease treated at a referral center in Fortaleza, Brazil. Fatigue was quantified with the Fatigue Severity Scale. The patients were submitted to the 6-min walk test, the 6-min step test, the Hospital Anxiety and Depression Scale, C-reative protein measurement and hematocrit count, measurement of dyspnea among other tests. Fatigue data were obtained from healthy individuals for comparison with patients. RESULTS: The mean age of patients was 45.9±12.3 years, and 53.7% were male. Fatigue, anxiety and depression levels were higher among end stage liver disease patients than among controls. A negative correlation was observed between 6 min step test and Fatigue Severity Scale score (r= -0.2; P=0.02) and between hematocrit count and Fatigue Severity Scale score (r= -0.24; P=0.002). Dyspnea on the Borg scale and fatigue were positively correlated (r=31; P=0.002). In the multivariate analysis, low 6-min step test values and high levels of dyspnea were associated with fatigue. CONCLUSION: Fatigue was more prevalent and severe in end stage liver disease patients than in healthy controls. Low 6MST values and high levels of dyspnea were associated with fatigue in this scenario.


Asunto(s)
Enfermedad Hepática en Estado Terminal/psicología , Tolerancia al Ejercicio/fisiología , Fatiga/psicología , Trasplante de Hígado/psicología , Adulto , Trastornos de Ansiedad/psicología , Estudios Transversales , Trastorno Depresivo/psicología , Enfermedad Hepática en Estado Terminal/fisiopatología , Fatiga/fisiopatología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Listas de Espera
8.
Arq Gastroenterol ; 52 Suppl 1: 2-14, 2015 12.
Artículo en Inglés | MEDLINE | ID: mdl-26959803

RESUMEN

Hepatocellular carcinoma is a malignancy of global importance and is associated with a high rate of mortality. Recent advances in the diagnosis and treatment of this disease make it imperative to update the recommendations on the management of the disease. In order to draw evidence-based recommendations concering the diagnosis and management of hepatocellular carcinoma, the Brazilian Society of Hepatology has sponsored a single-topic meeting in João Pessoa (PB). All the invited pannelists were asked to make a systematic review of the literature and to present topics related to the risk factors for its development, methods of screening, radiological diagnosis, staging systems, curative and palliative treatments and hepatocellular carcinoma in noncirrhotic liver. After the meeting, all panelists gathered together for the discussion of the topics and the elaboration of those recommendations. The text was subsequently submitted for suggestions and approval of all members of the Brazilian Society of Hepatology through its homepage. The present paper is the final version of the reviewed manuscript containing the recommendations of the Brazilian Society of Hepatology.


Asunto(s)
Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/terapia , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/terapia , Sociedades Médicas , Brasil , Humanos
9.
Shock ; 16(2): 113-5, 2001 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-11508862

RESUMEN

Arginine stimulates lymphocyte function and is degraded by arginase, an enzyme that is abundantly present in red blood cells. Arginase impairs lymphocyte function and responses in vitro. Leakage of arginase from stored red blood cells may be involved in the lymphocyte dysfunction associated in allogenic blood transfusion. In the present study, arginase activity was determined in bags of red cells stored for transfusion. Buffy coat depleted red blood cells were obtained routinely from four healthy donors and stored in bags for a maximum period of five weeks at 4 degrees C. The bags were sampled for determination of arginase, lactate dehydrogenase, and potassium. In addition, a random sample of 36 bags of red blood cells about to be transfused to patients were studied. Levels of arginase, lactate dehydrogenase, and potassium showed a time dependent increase in the bags of the four donors. This time dependent increase in arginase activity could be confirmed in the additional bags sampled (P < 0.0001, r = 0.78). The results for the first time show that arginase is released from red blood cells during storage for transfusion. Arginase infusion may play an important role in the immune suppression observed after blood transfusion.


Asunto(s)
Arginasa/sangre , Transfusión Sanguínea , Eritrocitos/enzimología , Donantes de Sangre , Conservación de la Sangre , Humanos , Terapia de Inmunosupresión/métodos , L-Lactato Deshidrogenasa/sangre , Potasio/sangre , Factores de Tiempo
10.
Psychopharmacology (Berl) ; 82(1-2): 107-12, 1984.
Artículo en Inglés | MEDLINE | ID: mdl-6420819

RESUMEN

These experiments investigated the effects of central noradrenaline (NA) depletion and its interaction with cholinergic and dopaminergic mechanisms upon retention of a passive-avoidance response in mice. The NA selective neurotoxin N-(2-chloroethyl)-N-ethyl-2-bromobenzylamine (DSP 4) (50 mg/kg IP, 7 days) was injected into mice to produce depletion of NA in frontal cortex, hypothalamus, cerebellum, midbrain and brain stem without any significant change in dopamine (DA) levels in frontal cortex, striatum, hypothalamus and midbrain. Depletion of brain NA produced by DSP 4 was significantly but not completely prevented by the NA uptake inhibitor desmethylimipramine (DMI) (10 mg/kg IP, 30 min before DSP 4 injection). Despite the marked NA depletion, DSP 4 neither impaired the retention of a passive-avoidance response in mice nor prevented the enhancement of retention of this response induced by the central muscarinic agonist oxotremorine (OTM) (0.05 mg/kg IP, immediately after training. This lack of effect of DSP 4 on retention was prevented neither by DMI nor by the serotonin uptake inhibitor fluoxetine (5 mg/kg IP, 30 min before DSP 4 injection). The enhancement of retention induced by OTM in the groups of mice injected with either water or DSP 4 was prevented by atropine (0.5 mg/kg IP, 20 min before training) but not by methylatropine in the same experimental conditions. This suggests that both in controls and DSP 4-pretreated mice, the primary effect of OTM is due to an interaction with muscarinic brain receptors.(ABSTRACT TRUNCATED AT 250 WORDS)


Asunto(s)
Aminas/farmacología , Bencilaminas/farmacología , Química Encefálica/efectos de los fármacos , Memoria/efectos de los fármacos , Neurotoxinas/farmacología , Norepinefrina/metabolismo , Oxotremorina/farmacología , Análisis de Varianza , Animales , Reacción de Prevención/efectos de los fármacos , Interacciones Farmacológicas , Masculino , Ratones , Receptores Muscarínicos/fisiología , Retención en Psicología/efectos de los fármacos
11.
Psychopharmacology (Berl) ; 64(1): 85-8, 1979 Jun 28.
Artículo en Inglés | MEDLINE | ID: mdl-113837

RESUMEN

The immediate posttrial injection of oxotremorine (0.125, 0.250 and 0.500 muMol/kg i.p.) and equimolecular doses of physostigmine can facilitate the retention of a passive avoidance response in mice. Injections given 10 min after training also significantly facilitate retention, but injections given 30 or 120 min after training do not affect retention. These findings suggest an action of oxotremorine and physostigmine on mechanisms involved in memory storage. The enhanced retention produced by oxotremorine and physostigmine was blocked by pretreatment with atropine (2 muMol/kg, 20 min, i.p.) but was not affected by methylatropine (2 muMol/kg, 20 min, i.p.). The retention was not modified by posttrial injection of metoxotremorine (0.25 muMol/kg i.p.) or neostigmine (0.250 muMol/kg i.p.), quaternary analogs of oxotremorine and physostigmine, respectively. The results suggest a central action of both cholinergic agents attributable to an activation of muscarinic brain receptors.


Asunto(s)
Memoria/efectos de los fármacos , Oxotremorina/farmacología , Fisostigmina/farmacología , Retención en Psicología/efectos de los fármacos , Animales , Atropina/farmacología , Derivados de Atropina/farmacología , Reacción de Prevención/efectos de los fármacos , Interacciones Farmacológicas , Masculino , Ratones , Neostigmina/farmacología , Oxotremorina/análogos & derivados , Factores de Tiempo
12.
Psychopharmacology (Berl) ; 69(3): 291-4, 1980.
Artículo en Inglés | MEDLINE | ID: mdl-6774370

RESUMEN

the immediate posttrial injection of oxotremorine (0.250 mu Mol/kg, IP) can facilitate the retention of a passive-avoidance response in mice. After the administration of alfa-methyl-p-tyrosine methylester (alpha-MPT) by intracerebroventricular injection at doses that had no effect on retention (100 microgram, 10 microliter, 60 min before trial), the immediate posttrial injection of oxotremorine did not enhance retention. The employed dose of alpha-MPT reduced brain levels of norepinephrine by about 40% and those of dopamine by about 25%. Pretreatment with nialamide (30 mg/kg, 20h IP), which prevents the catecholamine depletion induced by alpha-MPT, counteracted the effects depletion induced by alpha-MPT, counteracted the effects of alpha-MPT on the actions of oxotremorine on retention. These results suggest a participation of brain catecholamines on the actions of oxotremorine on retention and a possible interaction of cholinergic neurons with catecholaminergic system in memory processes.


Asunto(s)
Química Encefálica/efectos de los fármacos , Catecolaminas/fisiología , Memoria/fisiología , Oxotremorina/farmacología , Animales , Reacción de Prevención/efectos de los fármacos , Catecolaminas/metabolismo , Inyecciones Intraventriculares , Masculino , Memoria/efectos de los fármacos , Metiltirosinas/farmacología , Ratones , Nialamida/farmacología , Oxotremorina/administración & dosificación
13.
Psychopharmacology (Berl) ; 80(2): 161-5, 1983.
Artículo en Inglés | MEDLINE | ID: mdl-6136061

RESUMEN

The immediate post-trial injection of the centrally active muscarinic agonist oxotremorine (0.025, 0.050 and 0.100 mg/kg, IP) can facilitate the retention of a passive-avoidance response in mice, as indicated by performance on a retention test 24 h later. Injections given 10 min after training also significantly facilitated retention, but given 120 min after training did not affect retention. These findings suggest an action of oxotremorine on memory mechanisms. The enhanced retention was neither the result of a punishing effect of oxotremorine nor of a nonspecific proactive pharmacological action of the drug. The memory facilitation produced by oxotremorine (0.050 mg/kg, IP) was not antagonized by pretreatment with phentolamine (10 mg/kg, 30 min, IP), phenoxybenzamine (10 mg/kg, 120 min, IP) or piperoxane (20 mg/kg, 30 min, IP). The alpha-noradrenergic blocking agents had no effect by themselves. On the other hand, the immediate post-trial injection of oxotremorine (0.050 mg/kg, IP) did not enhance retention when mice were pretreated with haloperidol (0.5 mg/kg, 120 min, IP). Haloperidol injected either before training or before the retention test did not alter performance during the retention test. This suggests that haloperidol impairs neither acquisition of the avoidance response nor its retrieval. Thus, it is probable that haloperidol pretreatment impaired oxotremorine-induced memory facilitation. We suggest a possible participation of brain catecholamines in memory facilitation induced by oxotremorine in mice.


Asunto(s)
Dopamina/fisiología , Memoria/efectos de los fármacos , Oxotremorina/farmacología , Sistema Nervioso Parasimpático/fisiología , Antagonistas Adrenérgicos alfa/farmacología , Animales , Haloperidol/farmacología , Masculino , Memoria/fisiología , Ratones , Fenoxibenzamina/farmacología , Fentolamina/farmacología , Piperoxano/farmacología
14.
Anticancer Res ; 14(3A): 773-86, 1994.
Artículo en Inglés | MEDLINE | ID: mdl-8074479

RESUMEN

We have identified by cDNA cloning a gene, denoted MPS-1, that is activated in cultured human transformed cells by growth factors. The MPS-1 gene contains one zinc finger domain similar to those present in the C4 family of DNA binding proteins. In this study, the expression of MPS-1 mRNA and protein were examined in HPV-induced human condylomata acuminata. Initially, we detected the presence of MPS-1 mRNA by message amplification phenotyping in all condylomata tissues examined. Subsequently, the cellular distribution and abundance of MPS-1 mRNA was studied by in situ hybridization with specific MPS-1 DNA and RNA probes. We found that MPS-1 mRNA is expressed at high levels in the cytoplasm of condylomata cells. In contrast, the MPS-1 mRNA is expressed at low levels in nonneoplastic tissues. Moreover, antibodies were raised against the predicted N-terminal sequence of the MPS-1 protein and used to detect MPS-1 in condylomata cells. MPS-1 immunoreactivity was detected in the cytoplasm and/or the perinuclear regions of condylomata cells, with marked staining in areas of active proliferation. In distinction, MPS-1 immunoreactivity was very weak in normal epithelial cells. The results support the contention that the MPS-1 protein may be a potentially important mediator of proliferative responses induced by HPV.


Asunto(s)
Condiloma Acuminado/metabolismo , Proteínas de Unión al ADN/genética , Enfermedades de los Genitales Femeninos/metabolismo , Metaloproteínas/genética , Proteínas Nucleares/genética , Papillomaviridae , Proteínas Ribosómicas , Dedos de Zinc , Adulto , Anciano , Secuencia de Aminoácidos , Secuencia de Bases , Proteínas de Unión al ADN/análisis , Femenino , Humanos , Inmunohistoquímica , Hibridación in Situ , Metaloproteínas/análisis , Datos de Secuencia Molecular , Proteínas Nucleares/análisis , ARN Mensajero/análisis , Proteínas de Unión al ARN
15.
Soc Sci Med ; 42(2): 221-31, 1996 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-8928031

RESUMEN

During the past five years, researchers from the Medical Research Council and Uganda Virus Research Institute (MRC/UVRI) Programme on AIDS have studied sexual behaviour to better understand the risk and the spread of HIV infection in a rural Ugandan community. This paper aims at a reflective critique of the application of various methods of studying sexual behaviour in a series of six studies within the programme. The objectives of these various studies have been different: ranging from the natural history of HIV-infection to marital instability to household coping. This variety of foci has led to multiple research strategies. Three methodological factors influencing the research and the results were identified: the research model; the meanings of research questions; and personal factors affecting the interview relationship. Although the impact of these factors could not be entirely eliminated, precautions could be taken to diminish these biases. Comparing data obtained through different methods proved useful not only as a validity test but also as a mean to more deeply interpret the data according to culture, linguistics and society. Lessons learned during this piece of work include the importance to the quality of data by inviting local communities to participate in the research process; broadening the field of sexuality from a health-oriented model to reach an anthropological perspective; considering the influence of research organization on the context in which sexual behaviour takes place as a part of the study objectives and promoting an inter-disciplinary dialogue overcoming dogma and prejudices.


Asunto(s)
Infecciones por VIH/prevención & control , Vigilancia de la Población/métodos , Salud Rural , Conducta Sexual , Adolescente , Adulto , Actitud Frente a la Salud , Participación de la Comunidad , Cultura , Recolección de Datos/métodos , Factores Epidemiológicos , Femenino , Infecciones por VIH/epidemiología , Humanos , Relaciones Interpersonales , Entrevistas como Asunto/métodos , Masculino , Persona de Mediana Edad , Proyectos de Investigación , Uganda/epidemiología
16.
In Vivo ; 15(2): 125-32, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11317516

RESUMEN

Hemopoietic cells, the extracellular matrix, growth factors and the microenvironment are involved in the regulation of hemopoiesis. Although the regulation of erythropoiesis is well understood at the cellular level in vivo and in vitro, the role of hemopoietic sites of erythroid progenitors production has not been well defined in both steady state conditions and in stress erythropoiesis. In this study we examined the qualitative erythroid differentiation and quantitative changes of the erythroid progenitors in different erythropoietic organs during erythropoiesis of stress in a hypoxia-induced polycythemia and post-hypoxic changes in a mice model. Chronic intermittent exposure to hypobaric hypoxia induced polycythemia in mice and the post-hypoxic period was characterized by total suppression of erythropoiesis. The number and distribution in hemopoietic sites of Immature Erythroid Burst (BFU-EI), Mature Erythroid Burst (BFU-EM) and Erythroid Colony Forming Units (CFU-E) was evaluated in bone marrow and spleen of hypoxic and post-hypoxic mice after removal from the chamber. The number of BFU-EI and CFU-E, was evaluated in both femoral bone marrow and spleen of ex-hypoxic polycythemic mice, at two times intervals after the end of hypoxia. We found that in both bone marrow and spleen, the kinetics of the CFU-E pool was characterized by a sharp fall from above normal to lower than normal levels. BFU-EM increased from normal to higher than normal levels. These results have been correlated with both erythropoietin (EPO) and the erythropoietic activity. The results show that EPO levels largely control both the differentiation and the amplification of the CFU-E pool and they suggest that EPO may acts as a "survival factor" at the CFU-E level and/or increase the flow of cells from BFU-E to CFU-E. After the termination of the period of hypoxia and during post-hypoxia there was a reduction in EPO production which subsequently caused a depletion of the CFU-E population, indicating that the size of the CFU-E pool is EPO-dependent. After the injection of 1U of recombinant human erythropoietin (rHuEPO) the size of that pool was increased and the pool of BFU-EI was decreased. It is noteworthy that our studies show that the spleen functions as a large reservoir of erythroid precursors for hypoxia-induced stress erythropoiesis.


Asunto(s)
Eritropoyetina/farmacología , Células Madre Hematopoyéticas/citología , Células Madre Hematopoyéticas/efectos de los fármacos , Hipoxia/tratamiento farmacológico , Animales , Diferenciación Celular/efectos de los fármacos , Eritropoyesis/efectos de los fármacos , Femenino , Humanos , Hipoxia/patología , Ratones , Ratones Endogámicos , Proteínas Recombinantes , Bazo/citología
17.
Rev Epidemiol Sante Publique ; 51(5): 505-11, 2003 Oct.
Artículo en Francés | MEDLINE | ID: mdl-14657797

RESUMEN

BACKGROUND: To assess sexually-transmitted infections (STIs) quality of care, syndromic approach acceptability and applicability by patients and health workers in Burkina Faso. METHOD: Three approaches were used: simulated patients method to assess quality of STIs care, patients interview and focus discussion with health workers to assess syndromic approach acceptability and applicability. RESULTS: Sixty-two anonymous visits were made in 17 Bobo-Dioulasso primary care clinics. Overall, history taking were assessed in 77.4% of visits, 47% patients were physically examined. Women (71%) were examined more frequently than men (41%) (P=0.01), 42% of patients were not examined in an isolated room. Medication was prescribed for 87.1% of the patients but only 37.5% of the treatments were applied according to national recommendations. Counselling was poor concerning critical messages regarding risk of HIV transmission, STI prevention. Patients and health workers found the syndromic approach acceptable and applicable, but the question of sexual behaviour was considered difficult to address. CONCLUSION: Quality of STIs care is poor in Burkna Faso. Staff training must emphasize interpersonal communication and motivation, with introduction of a sexually-transmitted infection syndrome package consisting of drugs and condoms in order to improve syndromic case management.


Asunto(s)
Calidad de la Atención de Salud , Enfermedades de Transmisión Sexual/terapia , Algoritmos , Burkina Faso , Consejo , Femenino , Infecciones por VIH/diagnóstico , Infecciones por VIH/prevención & control , Infecciones por VIH/transmisión , Humanos , Entrevistas como Asunto , Masculino , Educación del Paciente como Asunto , Examen Físico , Factores de Riesgo , Factores Sexuales , Enfermedades de Transmisión Sexual/diagnóstico , Enfermedades de Transmisión Sexual/tratamiento farmacológico , Enfermedades de Transmisión Sexual/prevención & control
18.
Arq. gastroenterol ; 56(3): 252-255, July-Sept. 2019. tab
Artículo en Inglés | LILACS | ID: biblio-1038715

RESUMEN

ABSTRACT BACKGROUND: Fatigue is highly prevalent in end stage liver disease, the studies about its association with exercise capacity in cirrhotic patients before liver are scarse. OBJECTIVE: In this study, we evaluated fatigue in 95 in end stage liver disease patients awaiting transplantation, compared to healthy volunteers, and tested the association between exercise capacity and fatigue. METHODS: Cross-sectional study of patients with chronic liver disease treated at a referral center in Fortaleza, Brazil. Fatigue was quantified with the Fatigue Severity Scale. The patients were submitted to the 6-min walk test, the 6-min step test, the Hospital Anxiety and Depression Scale, C-reative protein measurement and hematocrit count, measurement of dyspnea among other tests. Fatigue data were obtained from healthy individuals for comparison with patients. RESULTS: The mean age of patients was 45.9±12.3 years, and 53.7% were male. Fatigue, anxiety and depression levels were higher among end stage liver disease patients than among controls. A negative correlation was observed between 6 min step test and Fatigue Severity Scale score (r= -0.2; P=0.02) and between hematocrit count and Fatigue Severity Scale score (r= -0.24; P=0.002). Dyspnea on the Borg scale and fatigue were positively correlated (r=31; P=0.002). In the multivariate analysis, low 6-min step test values and high levels of dyspnea were associated with fatigue. CONCLUSION: Fatigue was more prevalent and severe in end stage liver disease patients than in healthy controls. Low 6MST values and high levels of dyspnea were associated with fatigue in this scenario.


RESUMO CONTEXTO: A fadiga é uma queixa comum em indivíduos com doença hepática crônica candidatos a transplante hepático. Estudos sobre sua associação com capacidade do exercício são escassos. OBJETIVO: Avaliar a fadiga de pacientes com hepatopia crônica candidatos a transplante hepático comparando com um grupo de indivíduos saudáveis. Avaliar a associação da fadiga com capacidade de exercício. MÉTODOS: Este é um estudo transversal com pacientes hepatopatas crônicos num centro de referência em Fortaleza, Brasil. Foi utilizado o questionário de gravidade da fadiga. Os pacientes realizaram o teste da caminhada dos 6 min, teste do degrau 6 min, foi aplicada a escala de ansiedade e depressão, foram dosados proteína C reativa e hematócrito. RESULTADO: A idade média dos pacientes foi de 45,9±12,3 anos, sendo que 53,7% eram homens. Os níveis de fadiga e ansiedade e depressão eram maiores entre os pacientes hepatopatas crônicos quando comparados ao grupo controle. Uma correlação inversa foi observada entre fadiga e o teste do degrau (r= -0,2; P=0,02) também entre hematócrito e fadiga (r= -0,24; P=0,002). Houve uma correlação positiva entre dispneia, através da escala de Borg, e fadiga (r=31; P=0,002). Na análise multivariada um baixo desempenho no teste do degrau e um nível maior de dispneia mostraram uma associação com fadiga. CONCLUSÃO: A fadiga é mais frequente entre os pacientes hepatopatas crônicos quando comparados ao grupo controle. O baixo desempenho na capacidade de exercício e uma queixa maior de dispneia apresentaram uma associação com fadiga nestes pacientes.


Asunto(s)
Humanos , Masculino , Femenino , Adulto , Trasplante de Hígado/psicología , Tolerancia al Ejercicio/fisiología , Fatiga/psicología , Enfermedad Hepática en Estado Terminal/psicología , Trastornos de Ansiedad/psicología , Estudios Transversales , Listas de Espera , Trastorno Depresivo/psicología , Fatiga/fisiopatología , Enfermedad Hepática en Estado Terminal/fisiopatología , Persona de Mediana Edad
19.
Arq Gastroenterol ; 50(1): 15-8, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23657301

RESUMEN

CONTEXT: Liver transplantation is one of the last viable resources for patients with end-stage liver disease. Many strategies are been used to improve the number of available organs and overcome waiting list delay. However, hepatic steatosis is one of the mainly concerns when organs are consider to transplantation due to it is importance as a risk factor for primary dysfunction. Surgeons play an important role to decide each organ will be accept or decline and its righteous allocation. OBJECTIVE: Retrospectively evaluate the surgeon assessment of steatosis degree and its confrontation with further histopathologic findings. METHODS: We analyzed 117 patients underwent deceased liver transplantation for end-stage liver disease in University Hospital Walter Cantideo, Fortaleza, CE, Brazil. A matrix table was organized to estimate the categorical data observed. We clustered the subjects into mild (0%-30%) and moderate (30%-60%) steatosis degree under the clinical criteria of organ suitability for transplantation. We categorized the organs as suitable organ for transplant and as non-suitable organ for transplant. Evaluations between the two first assessments, before perfusion (pre-perfusion) vs biopsy findings and after perfusion vs biopsy findings observations were analyzed and also a comparison between pre-perfusion and after perfusion data was performed. RESULTS: On the first assessment, we obtained a 93% of agreement (n = 109) between the two evaluations. On the second assessment, we had an 8% (n = 9) of mistaken allocation. Comparing the observation before (pre-perfusion) and after (after perfusion), we obtained a strong agreement between the surgeons. CONCLUSIONS: Although our experienced surgeon team, we have wrongly evaluated feasible organs for transplantation. Nonetheless, our faulty percentage is low comparing to worldwide percentage.


Asunto(s)
Competencia Clínica , Enfermedad Hepática en Estado Terminal/cirugía , Hígado Graso/patología , Trasplante de Hígado , Hígado/patología , Adolescente , Adulto , Anciano , Biopsia , Niño , Preescolar , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Riesgo , Índice de Severidad de la Enfermedad , Obtención de Tejidos y Órganos , Adulto Joven
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