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1.
Transplantation ; 2024 Mar 19.
Artículo en Inglés | MEDLINE | ID: mdl-38499511

RESUMEN

BACKGROUND: The outcomes after kidney transplantation (KT), including access, wait time, and other issues around the globe, have been studied. However, issues do vary from one country to another. METHODS: We obtained data from several countries from North America, South America, Europe, Asia, and Australia, including the number of patients awaiting KT from 2015, transplant rate per million population (pmp), proportion of living donor and deceased donor (LD/DD) KT, and posttransplant survival. We also sought opinions on key difficulties faced by each of these countries with respect to KT and long-term survival. RESULTS: Variation in access to KT across the globe was noted. Countries with the highest rates of KT pmp included the United States (79%) and Spain (71%). A higher proportion of LD transplants was noted in Japan (93%), India (85%), Singapore (63%), and South Korea (63%). A higher proportion of DD KTs was noted in Spain (90%), Brazil (90%), France (85%), Italy (85%), Finland (85%), Australia-New Zealand (80%), and the United States (77%). The 5-y graft survival for LD was highest in South Korea (95%), Singapore (94%), Italy (93%), Finland (93%), and Japan (93%), whereas for DD, it was South Korea (93%), Italy (88%), Japan (86%), and Singapore (86%). The common issues surrounding KTs are access and a limited number of LDs and DDs. Key issues identified for long-term survival were increasing age of donors and recipients, higher recipient comorbidity, and posttransplant events, such as alloimmune injury to the kidney, infection, cancer, and suboptimal adherence to therapy. CONCLUSIONS: A unified approach is necessary to improve issues surrounding KT as the demand continues to increase.

2.
Poult Sci ; 100(2): 926-937, 2021 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-33518146

RESUMEN

Herein, we investigated the effect of Chlorella vulgaris as ingredient (10% of incorporation) in broiler diets, supplemented or not with 2 formulations of Carbohydrate-Active enZymes (CAZymes; Rovabio Excel AP and a mixture of recombinant CAZymes, composed by an exo-ß-glucosaminidase, an alginate lyase, a peptidoglycan N-acetylmuramic acid deacetylase and a lysozyme), on growth performance, meat quality, fatty acid composition, oxidative stability, and sensory traits. One hundred twenty 1-day-old Ross 308 male birds were randomly assigned to one of the 4 experimental diets (n = 30): corn-soybean meal-basal diet (control), basal diet with 10% C. vulgaris (CV), CV supplemented with 0.005% of a commercial CAZyme cocktail (Rovabio Excel AP), (CV + R), and CV supplemented with 0.01% of a 4-CAZyme mixture previously selected (CV + M) during the experimental period lasted from day 21 to day 35. Body weight gain and feed conversion rate of broilers were not affected by C. vulgaris but digesta viscosity increased more than 2-fold (P < 0.001) relative to the control. In addition, neither cooking loss, shear force, juiciness, flavor nor off-flavor was impaired by dietary treatments (P > 0.05). By contrast, the dietary C. vulgaris increased tenderness, yellowness (b∗) and total carotenoids in breast and thigh meats. However, no additional protective effect against lipid oxidation was observed in meat with the inclusion of microalga. Chlorella vulgaris, independently of CAZymes, had a minor impact on meat fatty acid composition but improved the proportion of some beneficial fatty acids. In summary, our data indicate a slight improvement of broiler meat quality and lipid nutritional value, without impairment of broilers' growth performance, thus supporting the usefulness of this microalga in poultry diets, up to this high level of incorporation. By contrast, the selected CAZyme mixtures used do not significantly improve the release of microalga nutrients in poultry diets, through the disruption of microalga cell wall, which warrants further research.


Asunto(s)
Pollos , Chlorella vulgaris , Lípidos/análisis , Carne/normas , Amidohidrolasas/metabolismo , Alimentación Animal/análisis , Fenómenos Fisiológicos Nutricionales de los Animales , Animales , Metabolismo de los Hidratos de Carbono/efectos de los fármacos , Dieta/veterinaria , Suplementos Dietéticos , Endopeptidasas/metabolismo , Hexosaminidasas/metabolismo , Masculino , Carne/análisis , Muramidasa/metabolismo , Polisacárido Liasas/metabolismo
3.
Int J Organ Transplant Med ; 12(3): 1-10, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-35509723

RESUMEN

Background: Focal segmental glomerulosclerosis (FSGS) has a high recurrence rate after renal transplantation, which significantly impacts renal graft survival. However, the factors related to recurrence remain unclear. Objective: This study aimed to analyze focal segmental recurrence and evolution of glomerulosclerosis after renal transplantation. Methods: This was a descriptive, retrospective study involving 88 adults who underwent renal transplantation within a 15-year period. Demographic and clinical characteristics, as well as the occurrence of graft loss, were analyzed. Over the study period, 88 patients with a diagnosis of FSGS after transplantation were identified. Results: The mean age of the patients (n=54, males) was 29.1 years. Transplants with deceased donors predominated (60.9%). Calcineurin and prednisone inhibitors were present in 96.4% of the initial immunosuppression regimens. The mean time of onset of proteinuria greater than 0.5 g/g was 20.51 days. At 60 months after transplantation, 44.16% of the patients had partial remission, 25.97% had complete remission, and 29.87% had no remission. However, 50.60% of the patients developed graft loss throughout the analyzed period. Eight patients (9.4%) died within 60 months, of which five (62.5%) were attributed to infection. Conclusion: Our results indicate that FSGS after renal transplantation is a disease of high recurrence that is commonly precocious, and the histological alterations in light microscopy are not simultaneous to the appearance of proteinuria. Hypertension is considered a risk factor causing progression and recurrence. Thus, prospective studies are required to better evaluate progression and recurrence factors.

5.
Poult Sci ; 99(5): 2519-2532, 2020 May.
Artículo en Inglés | MEDLINE | ID: mdl-32359588

RESUMEN

This study assessed the effect of Spirulina (Arthrospira platensis), individually and in combination with exogenous enzymes, on growth performance, carcass traits, and meat quality of broiler chickens. One hundred and twenty Ross 308 male chickens were allocated into 40 battery brooders, with 3 birds per cage, and fed ad libitum a corn-based diet during the first 21 D of the trial. The experimental period lasted from day 21 to 35, during which birds were fed 4 different diets: a corn-soybean basal diet, taken as the control group, a basal diet containing 15% Spirulina (MA), a basal diet containing 15% Spirulina plus 0.005% Rovabio Excel AP (MAR), and a basal diet containing 15% Spirulina plus 0.01% lysozyme (MAL). Body weight gain (P < 0.001) and feed conversion rate (P < 0.001) were improved in control chickens, when compared with those fed with Spirulina. In addition, Spirulina increased the length of duodenum plus jejunum in relation to the other treatment (P < 0.01). Chickens on the MAL diet showed a considerable increase in digesta viscosity (P < 0.05) compared with the control group. Breast and thigh meats from chickens fed with Spirulina, with or without the addition of exogenous enzymes, had higher values of yellowness (b*) (P < 0.001), total carotenoids (P < 0.001), and saturated fatty acids (P < 0.001), whereas n-3 polyunsaturated fatty acid (P < 0.01) and α-tocopherol (P < 0.001) decreased, when compared with the control. In conclusion, the incorporation of 15% Spirulina in broiler diets, individually or combined with exogenous enzymes, reduced birds' performance through a higher digesta viscosity, which is likely associated with the gelation of microalga indigestible proteins. In addition, cell wall of Spirulina was successfully broken by the addition of lysozyme, but not by Rovabio Excel AP. Therefore, we anticipate that the combination of lysozyme with an exogenous specific peptidase could improve the digestibility of proteins from this microalga and avoid their detrimental gelation.


Asunto(s)
Alimentación Animal/análisis , Pollos/fisiología , Carne/análisis , Muramidasa/administración & dosificación , Spirulina/química , Animales , Pollos/crecimiento & desarrollo , Dieta/veterinaria , Masculino
6.
Sci Total Environ ; 698: 134155, 2020 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-31505347

RESUMEN

Despite being considered environmentally safe, a deeper environmental risk assessment is needed for microbial insecticides; special attention should be devoted to their sublethal toxicity to non-target species. This study evaluated effects of VectoBac® 12AS - VB (based on the bacterium Bacillus thurigiensis var. israelensis) and Naturalis®-L - NL (based on the fungus Beauveria bassiana) on the aquatic insect Chironomus riparius life-history and biochemical responses. Acute tests estimated a 48 h-LC50 (median lethal concentration) of 1.85 µg/L (VB) and 34.7 mg/L (NL). Under sublethal exposure, VB decreased adults' emergence (LOEC - lowest observed effect concentration of 80 ng/L) while NL impaired larval growth (LOEC of 0.32 mg/L) and delayed emergence (LOEC of 2 mg/L for males and 0.8 mg/L for females). Despite not being monotonic, phenoloxidase activity increased (LOEC of 20 ng/L (VB) and 2 mg/L (NL)), suggesting activation of the immune system. There were no indications of oxidative damage nor neurotoxicity. Catalase activity was stimulated with all VB treatments, possibly associated with detoxification of immune response products. Under NL exposure, glutathione-S-transferase activity increased but did not show a dose-dependent response and, total glutathione decreased in the highest concentration. Exposure to both formulations caused the increase in protein content, while carbohydrate and lipids were not altered. This study revealed the susceptibility of C. riparius to VB and NL at concentrations below the ones recommended for field application, with potential population-level effects. These results add important information for the risk assessment of these microbial insecticides in aquatic ecosystems, considering relevant sublethal endpoints and raising concern about the adverse effects on non-target aquatic organisms.


Asunto(s)
Chironomidae/fisiología , Insecticidas/toxicidad , Contaminantes Químicos del Agua/toxicidad , Animales , Bacillus thuringiensis , Beauveria , Femenino , Masculino
7.
Adv Food Nutr Res ; 89: 53-94, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31351530

RESUMEN

Pork, one of the most consumed meats worldwide, has been facing major challenges regarding its low sensory quality and unhealthy image of fat. This chapter addresses current feeding strategies to ameliorate pork sensory attributes and nutritional quality by increasing intramuscular fat deposition and improving fatty acid composition, respectively. Dietary protein reduction, alone or combined with some components, contributes to satisfy consumer requirements and enhances the competitiveness of the meat industry with higher pork quality and lower production costs. In addition, feeding sources of n-3 polyunsaturated fatty acids to pigs, mainly from marine origin (rich in eicosapentaenoic and docosahexaenoic acids), increases their content in pork, thus improving the health value of its fatty acid profile. In the near future, the inclusion of microalgae and seaweeds in feed represents a promising approach for the maintenance and development of the livestock sector, as an environmental friendly alternative to balance food and feed industries.


Asunto(s)
Distribución de la Grasa Corporal , Dieta/veterinaria , Músculo Esquelético/fisiología , Valor Nutritivo , Carne de Cerdo/normas , Animales , Porcinos
8.
Ecotoxicol Environ Saf ; 178: 230-238, 2019 Aug 30.
Artículo en Inglés | MEDLINE | ID: mdl-31026744

RESUMEN

Lead and mancozeb are two important chemicals used for different human purposes and activities worldwide. Hazard assessment in different areas of the world is carried out with different but phylogenetically similar species, adapted to different climatic conditions, in order to increase relevance. This study evaluated the sensitivity of two monophyletic species, the tropical species Daphnia similis and the temperate species Daphnia magna, to the two chemicals lead and mancozeb. Standard acute and chronic ecotoxicological tests (reproduction and growth), as well as other sublethal measurements such as the intrinsic rate of population increase (r), feeding rate (FR) and O2 consumption, were recorded along with the analysis of the AChE activity to determine the neurotoxicity of both contaminants. Albeit their similar evolutionary status, D. magna generally presented a lower sensitivity to Pb in comparison to D. similis. Despite the differences in sensitivity, both species presented similar patterns of response under Pb exposure, with diminished reproductive outputs, feeding impairment, reduced O2 consumption and no effect on AChE activity. Mancozeb decreased the reproduction, rate of population increase and feeding rate, increased the AChE activity in both species and increased O2 consumption only in D. magna. While D. magna increased O2 consumption under mancozeb exposure, no effects were observed for D. similis. Thus, species may present different responses and sensitivities to different pollutants, regardless of their phylogeny. Therefore, the use of ecotoxicological assays with native species is crucial for a better ecological risk assessment in contaminated areas.


Asunto(s)
Daphnia/efectos de los fármacos , Plomo/toxicidad , Maneb/toxicidad , Contaminantes Químicos del Agua/toxicidad , Zineb/toxicidad , Animales , Bioensayo , Daphnia/crecimiento & desarrollo , Ecotoxicología , Filogenia , Reproducción/efectos de los fármacos , Especificidad de la Especie , Pruebas de Toxicidad
9.
J Mycol Med ; 29(1): 67-70, 2019 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-30638827

RESUMEN

Fungi from the Conidiobolus genus have been implicated in the development of chronic invasive fungal rhinosinusitis, mainly in tropical countries. The mycosis associated to these fungi may cause irreversible facial deformities and is potentially fatal. The authors present the first case of a chronic invasive fungal rhinosinusitis due to Conidiobolus coronatus diagnosed in a 66-year-old Caucasian male patient, living in Portugal without any travels abroad and complaining of progressive refractory nasal obstruction, facial pain and anosmia. Upon the culture of samples collected during sinus endoscopic surgery, colonies that presented a macroscopic aspect remembering wax were detected. The microscopic evaluation allowed the observation of simple conidiophores forming spherical conidia, and of conidiophores that presented hair-like appendages. Together, these characteristics allowed the identification of the fungi as a Conidiobolus, which was confirmed upon the DNA sequencing. The authors emphasised the role of this fungi as an emergent microorganism as well as the difficulties associated to the diagnosis and treatment.


Asunto(s)
Enfermedades Transmisibles Emergentes/diagnóstico , Conidiobolus/aislamiento & purificación , Sinusitis/microbiología , Cigomicosis/diagnóstico , Anciano , Antifúngicos/uso terapéutico , Enfermedad Crónica , Enfermedades Transmisibles Emergentes/microbiología , Conidiobolus/genética , Humanos , Masculino , Obstrucción Nasal/etiología , Portugal , Análisis de Secuencia de ADN , Sinusitis/diagnóstico por imagen , Esporas Fúngicas/efectos de los fármacos , Tomografía Computarizada por Rayos X , Cigomicosis/tratamiento farmacológico
10.
Transpl Infect Dis ; 20(4): e12894, 2018 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-29603514

RESUMEN

INTRODUCTION: While the growing knowledge on HIV among solid organ transplant recipients (SOT) is limited to either pretransplant infection or allograft transmission, there are only sparse reports describing HIV-infection after transplantation through sexual route, the primary mode of transmission in the general population. METHODS: From two different centers, we report nine new cases of HIV infection in SOT recipients attributed to sexual acquisition: eight cases of kidney-transplant recipients and one heart-transplant recipient. FINDINGS: There were nine cases of post-transplant HIV-infection detected among 14 526 transplants performed 1998 to 2015. In 6/9 cases, infection was contracted 5 years after SOT. All but one patient had stable allograft function under immunosuppressive therapy. The main trigger to diagnosis was late CMV disease and sexually transmitted diseases; five patients had CDC-stage 3 HIV infection. In 7/9 patients, virologic response and CD4 recovery were achieved within 3 months after starting antiretroviral therapy (ART). After an average of 3.6 years post diagnosis, 5/9 patients remained alive with well-controlled infection and functioning allograft. CONCLUSION: Sexual acquisition of HIV infection after SOT represents a difficult challenge, as it may occur in any kind of transplant and at any time. The course of infection resembles that of the general population, with life-threatening infectious complications, but good response to ART. Assessment of lifestyle and risk behavior is paramount, as indications may be not disclosed without direct questioning.


Asunto(s)
Antivirales/uso terapéutico , Infecciones por VIH/epidemiología , Trasplante de Corazón/efectos adversos , Trasplante de Riñón/efectos adversos , Complicaciones Posoperatorias/epidemiología , Adulto , Femenino , Estudios de Seguimiento , Rechazo de Injerto/prevención & control , VIH/efectos de los fármacos , VIH/aislamiento & purificación , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/virología , Conductas de Riesgo para la Salud , Humanos , Inmunosupresores/uso terapéutico , Estilo de Vida , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/tratamiento farmacológico , Complicaciones Posoperatorias/virología , Respuesta Virológica Sostenida
11.
Clin Microbiol Infect ; 23(5): 333.e9-333.e14, 2017 May.
Artículo en Inglés | MEDLINE | ID: mdl-28062320

RESUMEN

OBJECTIVES: This is a retrospective and observational study addressing clinical and therapeutic aspects of melanized fungal infections in kidney transplant recipients. METHODS: We retrospectively reviewed medical records of all patients admitted between January 1996 and December 2013 in a single institution who developed infections by melanized fungi. RESULTS: We reported on 56 patients aged between 30 and 74 years with phaeohyphomycosis or chromoblastomycosis (0.54 cases per 100 kidney transplants). The median time to diagnosis post-transplant was 31.2 months. Thirty-four (60.8%) infections were reported in deceased donor recipients. Fifty-one cases of phaeohyphomycosis were restricted to subcutaneous tissues, followed by two cases with pneumonia and one with brain involvement. Most dermatological lesions were represented by cysts (23/51; 45.1%) or nodules (9/51; 17.9%). Exophiala spp. (34.2%) followed by Alternaria spp. (7.9%) were the most frequent pathogens. Graft loss and death occurred in two patients and one patient, respectively. Regarding episodes of subcutaneous phaeohyphomycosis, a complete surgical excision without antifungal therapy was possible in 21 of 51 (41.2%) patients. Long periods of itraconazole were required to treat the other 30 (58.8%) episodes of subcutaneous disease. All four cases of chromoblastomycosis were treated only with antifungal therapy. CONCLUSIONS: Melanized fungal infections should be considered in the differential diagnosis of all chronic skin lesions in transplant recipients. It is suggested that the impact of these infections on graft function and mortality is low. The reduction in immunosuppression should be limited to severely ill patients.


Asunto(s)
Cromoblastomicosis/diagnóstico , Cromoblastomicosis/tratamiento farmacológico , Trasplante de Riñón , Feohifomicosis/diagnóstico , Feohifomicosis/tratamiento farmacológico , Adulto , Anciano , Alternaria/efectos de los fármacos , Alternaria/aislamiento & purificación , Antifúngicos/uso terapéutico , Exophiala/efectos de los fármacos , Exophiala/aislamiento & purificación , Femenino , Estudios de Seguimiento , Humanos , Itraconazol/uso terapéutico , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Receptores de Trasplantes
12.
Transplant Direct ; 3(5): .155-.155, 2017.
Artículo en Inglés | Sec. Est. Saúde SP, SESSP-IDPCPROD, Sec. Est. Saúde SP | ID: biblio-1068304

RESUMEN

BACKGROUND: This study compared the use of static cold storage versus continuous hypothermic machine perfusion in a cohort of kidney transplant recipients at high risk for delayed graft function (DGF). METHODS: In this national, multicenter, and controlled trial, 80 pairs of kidneys recovered from brain-dead deceased donors were randomized to cold storage or machine perfusion, transplanted, and followed up for 12 months. The primary endpoint was the incidence of DGF. Secondary endpoints included the duration of DGF, hospital stay, primary nonfunction, estimated glomerular filtration rate, acute rejection, and allograft and patient survivals. RESULTS: Mean cold ischemia time was high but not different between the 2 groups (25.6 ± 6.6 hours vs 25.05 ± 6.3 hours, 0.937). The incidence of DGF was lower in the machine perfusion compared with cold storage group (61% vs. 45%, P = 0.031). Machine perfusion was independently associated with a reduced risk of DGF (odds ratio, 0.49; 95% confidence interval, 0.26-0.95). Mean estimated glomerular filtration rate tended to be higher at day 28 (40.6 ± 19.9 mL/min per 1.73 m2 vs 49.0 ± 26.9 mL/min per 1.73 m2; P = 0.262) and 1 year (48.3 ± 19.8 mL/min per 1.73 m2 vs 54.4 ± 28.6 mL/min per 1.73 m2; P = 0.201) in the machine perfusion group. No differences in the incidence of acute rejection, primary nonfunction (0% vs 2.5%), graft loss (7.5% vs 10%), or death (8.8% vs 6.3%) were observed...


Asunto(s)
Perfusión , Trasplante de Riñón
13.
Transpl Infect Dis ; 18(5): 730-740, 2016 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-27503081

RESUMEN

BACKGROUND: Highly active antiretroviral therapy has turned human immunodeficiency virus (HIV)-infected patients with end-stage renal disease into suitable candidates for renal transplantation. We present the Brazilian experience with kidney transplantation in HIV-infected recipients observed in a multicenter study. METHODS: HIV-infected kidney transplant recipients and matched controls were evaluated for the incidence of delayed graft function (DGF), acute rejection (AR), infections, graft function, and survival of patients and renal grafts. RESULTS: Fifty-three HIV-infected recipients and 106 controls were enrolled. Baseline characteristics were similar, but a higher frequency of pre-transplant positivity for hepatitis C virus and cytomegalovirus infections was found in the HIV group. Immunosuppressive regimens did not differ, but a trend was observed toward lower use of anti-thymocyte globulin in the group of HIV-infected recipients (P = 0.079). The HIV-positive recipient group presented a higher incidence of treated AR (P = 0.036) and DGF (P = 0.044). Chronic Kidney Disease Epidemiology Collaboration estimated that glomerular filtration rate was similar at 6 months (P = 0.374) and at 12 months (P = 0.957). The median number of infections per patient was higher in the HIV-infected group (P = 0.018). The 1-year patient survival (P < 0.001) and graft survival (P = 0.004) were lower, but acceptable, in the group of HIV-infected patients. CONCLUSIONS: In the Brazilian experience, despite somewhat inferior outcomes, kidney transplantation is an adequate therapy for selected HIV-infected recipients.


Asunto(s)
Rechazo de Injerto/epidemiología , Infecciones por VIH/complicaciones , Terapia de Inmunosupresión/métodos , Fallo Renal Crónico/cirugía , Trasplante de Riñón/mortalidad , Adulto , Suero Antilinfocítico/administración & dosificación , Terapia Antirretroviral Altamente Activa , Brasil/epidemiología , Estudios de Casos y Controles , Coinfección/epidemiología , Citomegalovirus/aislamiento & purificación , Infecciones por Citomegalovirus/epidemiología , Femenino , Tasa de Filtración Glomerular , Supervivencia de Injerto , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/mortalidad , Hepacivirus/aislamiento & purificación , Hepatitis C/epidemiología , Humanos , Inmunosupresores/administración & dosificación , Inmunosupresores/uso terapéutico , Incidencia , Fallo Renal Crónico/etiología , Fallo Renal Crónico/mortalidad , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Tasa de Supervivencia , Receptores de Trasplantes , Resultado del Tratamiento
14.
Am J Transplant ; 16(11): 3192-3201, 2016 11.
Artículo en Inglés | MEDLINE | ID: mdl-27130868

RESUMEN

In the Belatacept Evaluation of Nephroprotection and Efficacy as First-Line Immunosuppression Trial-Extended Criteria Donors (BENEFIT-EXT), extended criteria donor kidney recipients were randomized to receive belatacept-based (more intense [MI] or less intense [LI]) or cyclosporine-based immunosuppression. In prior analyses, belatacept was associated with significantly better renal function compared with cyclosporine. In this prospective analysis of the intent-to-treat population, efficacy and safety were compared across regimens at 7 years after transplant. Overall, 128 of 184 belatacept MI-treated, 138 of 175 belatacept LI-treated and 108 of 184 cyclosporine-treated patients contributed data to these analyses. Hazard ratios (HRs) comparing time to death or graft loss were 0.915 (95% confidence interval [CI] 0.625-1.339; p = 0.65) for belatacept MI versus cyclosporine and 0.927 (95% CI 0.634-1.356; p = 0.70) for belatacept LI versus cyclosporine. Mean estimated GFR (eGFR) plus or minus standard error at 7 years was 53.9 ± 1.9, 54.2 ± 1.9, and 35.3 ± 2.0 mL/min per 1.73 m2 for belatacept MI, belatacept LI and cyclosporine, respectively (p < 0.001 for overall treatment effect). HRs comparing freedom from death, graft loss or eGFR <20 mL/min per 1.73 m2 were 0.754 (95% CI 0.536-1.061; p = 0.10) for belatacept MI versus cyclosporine and 0.706 (95% CI 0.499-0.998; p = 0.05) for belatacept LI versus cyclosporine. Acute rejection rates and safety profiles of belatacept- and cyclosporine-based treatment were similar. De novo donor-specific antibody incidence was lower for belatacept (p ≤ 0.0001). Relative to cyclosporine, belatacept was associated with similar death and graft loss and improved renal function at 7 years after transplant and had a safety profile consistent with previous reports.


Asunto(s)
Abatacept/uso terapéutico , Ciclosporina/uso terapéutico , Rechazo de Injerto/prevención & control , Inmunosupresores/uso terapéutico , Fallo Renal Crónico/cirugía , Trasplante de Riñón , Femenino , Estudios de Seguimiento , Tasa de Filtración Glomerular , Supervivencia de Injerto , Humanos , Pruebas de Función Renal , Masculino , Persona de Mediana Edad , Pronóstico , Estudios Prospectivos , Factores de Riesgo
15.
Bull Environ Contam Toxicol ; 96(4): 438-42, 2016 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-26693935

RESUMEN

Esfenvalerate is a neurotoxic pyrethroid insecticide widely used for agricultural and residential purposes and is considered toxic to nontarget organisms such as fish and aquatic invertebrates. In this study, we evaluated the toxicity of esfenvalerate on the aquatic oligochaete Lumbriculus variegatus. In the acute test, organisms showed visible signs of stress but no LC50 value could be determined. In the 28-day chronic test, a significant decrease in reproduction was observed with a NOEC value of 0.25 µg/kg and a LOEC value of 2.34 µg/kg. As for biomass per worm, a significant decrease was also observed with a NOEC value of 2.34 µg/kg and a LOEC value of 36.36 µg/kg. Reproductive impairment and reductions in biomass of L. variegatus exposed to environmentally realistic concentrations of esfenvalerate observed in laboratory tests suggests potential deleterious effects of this pyrethroid on oligochaete natural populations.


Asunto(s)
Insecticidas/toxicidad , Nitrilos/toxicidad , Oligoquetos/efectos de los fármacos , Piretrinas/toxicidad , Contaminantes Químicos del Agua/toxicidad , Animales , Peso Corporal/efectos de los fármacos , Monitoreo del Ambiente , Nivel sin Efectos Adversos Observados , Oligoquetos/crecimiento & desarrollo , Reproducción/efectos de los fármacos , Pruebas de Toxicidad Aguda , Pruebas de Toxicidad Crónica
16.
Transplant Proc ; 47(4): 950-3, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-26036492

RESUMEN

BACKGROUND: The Collaborative Brazilian Pediatric Renal Transplant Registry started in 2004 as a multicenter initiative aiming to analyze, report, and share the results of pediatric kidney transplantation in Brazil. Data from all pediatric kidney transplants performed between January 2004 and December 2013 were recorded electronically and periodically updated. All patients under 18 years old from the participating centers were enrolled. Demographic data, etiology of chronic kidney disease, and patient and graft survival were analyzed. From a total of 2443 pediatric kidney transplants performed in Brazil during the study period, we report data from 1751 pediatric renal transplants performed in 13 centers enrolled in the collaborative study. Median age at transplantation was 12.4 years, and most of recipients were male (56%). The most common underlying renal etiologies were obstructive uropathy (31%) and glomerulopathy (26%). METHODS: According to donor source, 1155 (66%) of transplants were performed with deceased donors (DD). Initial immunosuppression consisted mainly of tacrolimus, mycophenolate, steroids, and induction therapy with anti-IL-2R antibodies. RESULTS: One-year graft survival (death-censored) was 93% and 90% (log rank test, P < .01), respectively, for living donor (LD) and DD. Graft losses (15%) were most frequently caused by vascular thrombosis, chronic allograft nephropathy, death with functioning kidney, acute rejection, and recurrent renal disease. Recipients of DD had 2.02 (95% confidence interval: 1.14-3.59) times the hazard of graft loss compared with those of LD (P = .015). Patient survival rates at 1 and 5 years were 98% and 97% for LD and 97% and 93% for DD, respectively. The mortality rate was 3.8%, mainly as the result of infection and cardiovascular disease. CONCLUSIONS: The results of this collaborative pediatric transplant study are comparable to international registries. Our effort has been able to maintain an exchange of information, both among the participating centers and with other international registries.


Asunto(s)
Supervivencia de Injerto , Fallo Renal Crónico/cirugía , Trasplante de Riñón , Sistema de Registros , Adolescente , Corticoesteroides/uso terapéutico , Brasil , Niño , Preescolar , Conducta Cooperativa , Femenino , Rechazo de Injerto/prevención & control , Humanos , Inmunosupresores/uso terapéutico , Lactante , Donadores Vivos , Masculino , Ácido Micofenólico/análogos & derivados , Ácido Micofenólico/uso terapéutico , Modelos de Riesgos Proporcionales , Recurrencia , Insuficiencia Renal Crónica , Tasa de Supervivencia , Tacrolimus/uso terapéutico , Donantes de Tejidos
17.
Am J Transplant ; 15(10): 2655-64, 2015 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25988935

RESUMEN

This study compared the incidence of CMV infection/disease in de novo kidney transplant recipients receiving everolimus or mycophenolate and no CMV pharmacological prophylaxis. We randomized 288 patients to receive a single 3 mg/kg dose of antithymocyte globulin, tacrolimus, everolimus, and prednisone (r-ATG/EVR, n = 85); basiliximab, tacrolimus, everolimus, and prednisone (BAS/EVR, n = 102); or basiliximab, tacrolimus, mycophenolate, and prednisone (BAS/MPS, n = 101). The primary end-point was the incidence of first CMV infection/disease in the intention-to-treat population at 12 months. Patients treated with r-ATG/EVR showed a 90% proportional reduction (4.7% vs. 37.6%, HR 0.10, 95% CI 0.037-0.29; p < 0.001), while those treated with BAS/EVR showed a 75% proportional reduction (10.8% vs. 37.6%, HR 0.25, 95% CI 0.13-0.48; p < 0.001) in the incidence of CMV infection/disease compared to BAS/MPS. There were no differences in the incidence of acute rejection (9.4 vs. 18.6 vs. 15.8%, p = 0.403), wound-healing complications, delayed graft function, and proteinuria. Mean estimated glomerular filtration rate was lower in BAS/EVR (65.7 ± 21.8 vs. 60.6 ± 20.9 vs. 69.5 ± 21.5 ml/min, p = 0.021). In de novo kidney transplant recipients receiving no pharmacological CMV prophylaxis, reduced-dose tacrolimus and everolimus was associated with a significant reduction in the incidence of CMV infection/disease compared to standard tacrolimus dose and mycophenolate (ClinicalTrials.gov NCT01354301).


Asunto(s)
Infecciones por Citomegalovirus/prevención & control , Everolimus/administración & dosificación , Rechazo de Injerto/prevención & control , Inmunosupresores/administración & dosificación , Trasplante de Riñón , Complicaciones Posoperatorias/prevención & control , Tacrolimus/administración & dosificación , Adulto , Anticuerpos Monoclonales/uso terapéutico , Suero Antilinfocítico/uso terapéutico , Basiliximab , Infecciones por Citomegalovirus/epidemiología , Infecciones por Citomegalovirus/inmunología , Relación Dosis-Respuesta a Droga , Quimioterapia Combinada , Everolimus/uso terapéutico , Femenino , Humanos , Inmunosupresores/uso terapéutico , Incidencia , Masculino , Persona de Mediana Edad , Ácido Micofenólico/uso terapéutico , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/inmunología , Prednisona/uso terapéutico , Estudios Prospectivos , Proteínas Recombinantes de Fusión/uso terapéutico , Sirolimus/uso terapéutico , Tacrolimus/uso terapéutico , Resultado del Tratamiento
18.
Leuk Lymphoma ; 56(2): 505-7, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24794809
19.
Transplant Proc ; 46(10): 3416-9, 2014 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-25498063

RESUMEN

BACKGROUND: Kidney transplantation (KT) in obese patients is controversial. The present study aimed to evaluate patient and graft survival and post-transplantation complications between obese and nonobese recipients. METHODS: Patients (n = 3,054) receiving a KT from 1998 to 2008 were divided according to body mass index (BMI) into 3 groups for analysis: group I: BMI <30 kg/m(2) (nonobese); group II: ≥30-34.9 kg/m(2) (class I obese); and group III: ≥35 kg/m(2) (class II and III obese). RESULTS: Mean BMIs were: group I (n = 2,822): 22.6 ± 3.3 kg/m(2); group II (n = 185): 31.9 ± 1.3 kg/m(2); and group III (n = 47): 36.8 ± 1.7 kg/m(2). There were no differences among the 3 groups in patient demographic variables regarding race, sex, or organ source. One-year (I, 98%; II, 98%; III, 95%) and 5-year (I, 90%; II, 92%; III, 89%) patient survival rates were similar among groups. Graft survival rates at 1 year were 96% for groups I and II and 91.5% for group III. Five-year graft survivals were: I, 81%; II, 96%; and III, 79%. The most common cause of graft loss was death, and the main cause of death was infection in all groups. Obese patients were more likely to experience wound dehiscence (I, 1.9%; II, 7.6%; III, 19.1%; P < .001), develop new-onset diabetes after transplantation (NODAT; I, 16.2%; II, 27%; III, 36%; P < .001), and have a prolonged length of hospital stay (I, 11.3 ± 11.4 d; II, 14.5 ± 14.3 d; III, 15.9 ± 16.7 d; P < .001). CONCLUSIONS: Obese recipients demonstrated outcomes similar to nonobese patients regarding patient and graft survival. However, they had higher rates of prolonged length of hospital stay, wound dehiscence, and NODAT.


Asunto(s)
Fallo Renal Crónico/complicaciones , Trasplante de Riñón , Obesidad/complicaciones , Receptores de Trasplantes , Adulto , Índice de Masa Corporal , Brasil/epidemiología , Femenino , Supervivencia de Injerto , Humanos , Fallo Renal Crónico/mortalidad , Fallo Renal Crónico/cirugía , Tiempo de Internación , Masculino , Persona de Mediana Edad , Obesidad/mortalidad , Tasa de Supervivencia/tendencias , Resultado del Tratamiento
20.
Transplant Proc ; 46(6): 1745-9, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25131026

RESUMEN

After undergoing kidney transplantation, some patients still face one symptom that continues after the dialysis sessions: fatigue (physical and mental tiredness that does not get better after resting). Fatigue effects in the everyday lives of kidney transplant patients can be beneficially modified early by changing this scenario. This is a quantitative study about the intensity and impacts of fatigue in kidney transplant patients admitted to the Hypertension and Kidney Hospital from October 2011 to March 2012. The fatigue pictogram was used to evaluate the level of fatigue interference in the daily life activities of kidney transplant patients. The sample consists of 39 patients, and was developed in 2 phases: data collection and attendance after and before the transplantation until hospital discharge. Descriptive statistical analyses were used. In the group at issue, we have noticed the following profile of the sample: 84.3% of transplantations with live donors, most were men, average age 36.5 years old, average hospitalization time 11.1 days, average time of renal failure 66.4 months, systemic arterial hypertension prevalence 66.7%, and the prevalence of at least 1.8 diseases in each individual. The self-referred causes of chronic renal failure were uncontrolled systemic arterial hypertension, glomerulonephritis, and overuse of anti-inflammatory drugs, among others. The study shows that fatigue is directly related to the level of activities of daily living, causing less ability to perform activities in the higher level of fatigue, which is in the immediate postoperative period and only settling fully on the 9th postoperative day.


Asunto(s)
Actividades Cotidianas , Fatiga/etiología , Trasplante de Riñón , Receptores de Trasplantes , Adulto , Femenino , Humanos , Masculino
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