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1.
Can J Urol ; 28(6): 10936-10940, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34895399

RESUMEN

INTRODUCTION: To present our novel low submuscular (LSM) pressure regulating balloon (PRB) placement for artificial urinary sphincter (AUS) technique as an alternative to standard approaches with patient-reported satisfaction outcomes. MATERIAL AND METHODS: A retrospective review was conducted on patients who underwent an AUS implantation using the LSM PRB placement with transfascial fixation technique from July 2019 to August 2020. Preoperative characteristics were collected. Patients then conducted a postoperative phone interview using an adapted questionnaire to assess satisfaction of device and PRB concealment. RESULTS: During the study period, nine patients had undergone AUS placement using the LSM technique by a single surgeon at our private institution. Eight of the nine patients had undergone a radical prostatectomy while the ninth patient developed stress urinary incontinence after radiation treatment for prostate cancer. All patients were 'very satisfied' with PRB placement and concealment with no patients endorsing PRB complications. The majority of patients (78%) were satisfied with the device. One patient was able to palpate the PRB while another patient endorsed mild soreness around the PRB. No surgical revisions were required and there were no surgical complications such as bowel obstruction, herniations, bladder erosions, or vascular injuries. CONCLUSION: LSM placement of AUS PRB with transfascial fixation offers an improved technique for balloon placement with decreased risk for complications. This can be performed as a safe, alternative approach to current standard techniques with a high degree of patient satisfaction.


Asunto(s)
Incontinencia Urinaria de Esfuerzo , Esfínter Urinario Artificial , Humanos , Masculino , Prostatectomía/efectos adversos , Reoperación , Estudios Retrospectivos , Resultado del Tratamiento , Incontinencia Urinaria de Esfuerzo/etiología , Incontinencia Urinaria de Esfuerzo/cirugía , Esfínter Urinario Artificial/efectos adversos
2.
J Fungi (Basel) ; 7(4)2021 Mar 31.
Artículo en Inglés | MEDLINE | ID: mdl-33807161

RESUMEN

Fusarium oxysporum f. sp. cubense (Foc) is a soil-borne fungus causing Fusarium wilt (FW) in banana. It is practically impossible to eradicate Foc in soils. Our understanding of soil-Foc-banana interactions is hampered by inconsistent research results caused by agro-ecological variability and the complexity of the soil system. This study aimed to evaluate the options to manage soil chemical properties to reduce disease expression and maintain banana production. The expression of FW (Foc Race 1) and the agronomic performance of the Gros Michel (Musa AAA) banana were evaluated in two medium-term factorial field experiments at representative locations in the Costa Rican banana region. In the experiments, five soil chemical properties (pH, N, Ca, Mg, and Mn) were managed to achieve a low and a high level. Plant mortality caused by FW, soil fertility, plant nutrition, and agronomic performance were monitored during four crop cycles. After the first crop cycle, the treatments started to present differences in plant mortality. There was a significant rise of plant mortality after the second crop cycle resulting in a cumulative plant mortality exceeding 60% in both experiments. A lower soil pH consistently resulted in significantly higher plant mortality. The interactions between soil properties (pH-N, pH-CaMg, pH-Mn, N-Mn, and CaMg-Mn) also influenced plant mortality. Soil N was the most significant treatment affecting leaf nutrient concentrations, bunch weight, and clusters per bunch. The experiments confirmed the potential role of soil management in FW expression in banana. Our results suggest that the management of soil chemical properties in the conditions here studied may help to reduce the expression rate of FW, but not to control the disease in the long run.

3.
Cancer Lett ; 414: 34-43, 2018 02 01.
Artículo en Inglés | MEDLINE | ID: mdl-29107109

RESUMEN

Obesity is related to an increased risk of developing prostate cancer with high malignancy stages or metastasis. Recent results demonstrated that LOX-1, a receptor associated with obesity and atherosclerosis, is overexpressed in advanced and metastatic prostate cancer. Furthermore, high levels of oxLDL, the main ligand for LOX-1, have been found in patients with advanced prostate cancer. However, the role of LOX-1 in prostate cancer has not been unraveled completely yet. Here, we show that LOX-1 is overexpressed in prostate cancer cells and its activation by oxLDL promotes an epithelial to mesenchymal transition, through of lowered expression of epithelial markers (E-cadherin and plakoglobin) and an increased expression of mesenchymal markers (vimentin, N-cadherin, snail, slug, MMP-2 and MMP-9). Consequently, LOX-1 activation by oxLDL promotes actin cytoskeleton restructuration and MMP-2 and MMP-9 activity inducing prostate cancer cell invasion and migration. Additionally, LOX-1 increased the tumorigenic potential of prostate cancer cells and its expression was necessary for tumor growth in nude mice. In conclusion, our results suggest that oxLDL/LOX-1 could be ones of mechanisms that explain why obese patients with prostate cancer have an accelerated tumor progression and a greater probability of developing metastasis.


Asunto(s)
Carcinogénesis/efectos de los fármacos , Transición Epitelial-Mesenquimal/efectos de los fármacos , Lipoproteínas LDL/farmacología , Neoplasias de la Próstata/metabolismo , Receptores Depuradores de Clase E/metabolismo , Animales , Carcinogénesis/genética , Carcinogénesis/patología , Línea Celular Tumoral , Activación Enzimática/efectos de los fármacos , Transición Epitelial-Mesenquimal/genética , Regulación Neoplásica de la Expresión Génica/efectos de los fármacos , Humanos , Masculino , Ratones Desnudos , Neoplasias de la Próstata/genética , Neoplasias de la Próstata/terapia , Interferencia de ARN , Tratamiento con ARN de Interferencia/métodos , Receptores Depuradores de Clase E/genética , Carga Tumoral/efectos de los fármacos , Carga Tumoral/genética , Ensayos Antitumor por Modelo de Xenoinjerto/métodos
4.
Acta ortop. mex ; 30(6): 311-315, nov.-dic. 2016. graf
Artículo en Español | LILACS | ID: biblio-949770

RESUMEN

Resumen: Antecedentes: El tórax inestable se trata con ventilación mecánica o inhaloterapia y analgesia. Poco se ha publicado sobre el uso de material bioabsorbible y su evolución en la fijación de tórax inestable. Métodos: Estudio descriptivo de pacientes con tórax inestable sometidos a fijación con placas y tornillos bioabsorbibles en un período comprendido de Febrero de 2009 a Diciembre de 2011. Resultados: Presentamos 18 casos con edades entre 33 y 74 años (media de 53), tres con tórax inestable bilateral; la fijación costal se realizó entre 1 y 21 días del accidente (media de 1.5). Se inició deambulación al día siguiente en 14 casos; la estancia postoperatoria fue de cuatro días (rango de 3 a 14). La frecuencia cardíaca de los pacientes previa a la cirugía era de 90 por minuto (rango 82 a 100) y bajó a 84 después de la fijación (rango 82 a 92); la frecuencia respiratoria preoperatoria era 26 por minuto (rango 22 a 28) y bajó a 22 por minuto (rango 20 a 26) en el postoperatorio. Conclusiones: El uso de material bioabsorbible para osteosíntesis costal no tiene efectos secundarios atribuibles al material en el corto plazo.


Abstract: Background: Flail chest is managed with mechanical ventilation or inhaloteraphy and analgesia. Little has been published on the use of bioabsorbable material and its evolution in flail chest fixation. Methods: This is a descriptive study of patients with unstable chest undergoing fixation with bioabsorbable plates and screws in a period from February 2009 to December 2011. Results: We report 18 cases, aged 33-74 years (mean 53), three with bilateral involvement; rib fixation was performed between 1-21 days of the accident (mean 1.5). They started walking the next day in 14 cases; postoperative stay was four days (range 3-14). The heart rate of patients prior to surgery was 90 per minute (range 82-100) and lowered to 84 after fixation (range 82-92), preoperative respiratory rate was 26 per minute (range 22-28) and below 22 per minute (range 20 to 26) in postoperative period. Conclusions: The use of bioabsorbable material for osteosynthesis of costal fractures did not show side effects in our period of study.


Asunto(s)
Humanos , Adulto , Anciano , Placas Óseas , Tornillos Óseos , Implantes Absorbibles , Tórax Paradójico/cirugía , Fracturas de las Costillas , Fijación Interna de Fracturas , Persona de Mediana Edad
5.
Acta Ortop Mex ; 30(6): 311-315, 2016.
Artículo en Español | MEDLINE | ID: mdl-28549363

RESUMEN

BACKGROUND: Flail chest is managed with mechanical ventilation or inhaloteraphy and analgesia. Little has been published on the use of bioabsorbable material and its evolution in flail chest fixation. METHODS: This is a descriptive study of patients with unstable chest undergoing fixation with bioabsorbable plates and screws in a period from February 2009 to December 2011. RESULTS: We report 18 cases, aged 33-74 years (mean 53), three with bilateral involvement; rib fixation was performed between 1-21 days of the accident (mean 1.5). They started walking the next day in 14 cases; postoperative stay was four days (range 3-14). The heart rate of patients prior to surgery was 90 per minute (range 82-100) and lowered to 84 after fixation (range 82-92), preoperative respiratory rate was 26 per minute (range 22-28) and below 22 per minute (range 20 to 26) in postoperative period. CONCLUSIONS: The use of bioabsorbable material for osteosynthesis of costal fractures did not show side effects in our period of study.


ANTECEDENTES: El tórax inestable se trata con ventilación mecánica o inhaloterapia y analgesia. Poco se ha publicado sobre el uso de material bioabsorbible y su evolución en la fijación de tórax inestable. MÉTODOS: Estudio descriptivo de pacientes con tórax inestable sometidos a fijación con placas y tornillos bioabsorbibles en un período comprendido de Febrero de 2009 a Diciembre de 2011. RESULTADOS: Presentamos 18 casos con edades entre 33 y 74 años (media de 53), tres con tórax inestable bilateral; la fijación costal se realizó entre 1 y 21 días del accidente (media de 1.5). Se inició deambulación al día siguiente en 14 casos; la estancia postoperatoria fue de cuatro días (rango de 3 a 14). La frecuencia cardíaca de los pacientes previa a la cirugía era de 90 por minuto (rango 82 a 100) y bajó a 84 después de la fijación (rango 82 a 92); la frecuencia respiratoria preoperatoria era 26 por minuto (rango 22 a 28) y bajó a 22 por minuto (rango 20 a 26) en el postoperatorio. CONCLUSIONES: El uso de material bioabsorbible para osteosíntesis costal no tiene efectos secundarios atribuibles al material en el corto plazo.


Asunto(s)
Implantes Absorbibles , Placas Óseas , Tornillos Óseos , Tórax Paradójico , Adulto , Anciano , Tórax Paradójico/cirugía , Fijación Interna de Fracturas , Humanos , Persona de Mediana Edad , Fracturas de las Costillas
7.
Environ Monit Assess ; 185(12): 10101-14, 2013 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-23856810

RESUMEN

Laguna Larga, a coastal lagoon in central Cuba, has been heavily altered by tourism infrastructure construction and sewage disposal. We hypothesize that this has decreased the circulation and caused eutrophication of the lagoon. To assess this, 12 bimonthly samplings were carried out in 2007-2008. Temperature, salinity, oxygen, nutrients and nitrogen, and phosphorous fractions (inorganic, organic, and total) were determined. Water and salt budgets, as well as biogeochemical fluxes of nitrogen and phosphorus were calculated using the LOICZ budget model for the three sections of the lagoon identified by morphological constrains and salinity patterns. Laguna Larga is a choked lagoon with restricted water circulation, low exchange, and high residence times that vary significantly along its sections. Residence time was estimated to be 0.1-0.7 years for the inner section and 1-9 days for the outer one. High levels of total nitrogen (annual means 126-137 µM, peaks up to 475 µM) and phosphorus (2.5-4.4 µM, peaks up to 14.5 µM) are evidence of eutrophication of Laguna Larga. During 2007, an average precipitation year, Laguna Larga exported water (703 m(3) d(-1)) and was a source of nitrogen (9.026 mmol m(-2) d(-1)) and phosphorus (0.112 mmol m(-2) d(-1)) to the adjacent sea. δ(15)N determinations in the seagrass Thalassia testudinum (-1.83 to +3.02 ‰) differed significantly between sites in the lagoon and offshore reference sites located W of the inlet, but were similar to those located E of the inlet. δ(15)N determinations in the seaweed Penicillus dumetosus (+1.02 to +4.2) did not show significant differences.


Asunto(s)
Monitoreo del Ambiente , Nitrógeno/análisis , Fósforo/análisis , Agua de Mar/química , Contaminantes Químicos del Agua/análisis , Cuba , Eutrofización , Agua Subterránea/química , Movimientos del Agua
8.
Acta Ortop Mex ; 27(2): 87-91, 2013.
Artículo en Español | MEDLINE | ID: mdl-24701758

RESUMEN

UNLABELLED: Lumbar herniated disks result in lumbar pain with neurologic involvement. Medical treatment and rehabilitation provide improvement for this type of lumbar pain at the early stages. When conservative treatment fails, the surgical option offers the possibility of improving patients' health status. Moojen considers that the application of interspinous spacers provides good results. The purpose of this research is to assess the clinical and imaging results in patients with contained lumbar herniated disk treated with the DYNAMIC INTERSPACER interspinous spacer, a Mexican product. MATERIAL AND METHODS: The efficacy of the interspinous device was assessed by means of a near-investigational and longitudinal study conducted at "General Ignacio Zaragoza" ISSSTE Regional Hospital in patients with a diagnosis of lumbar pain. RESULTS: The mean age of the sample is 46.1 years, with an age range of 26-55 years. The treated levels were 6 L5-S1 and 5 L4-L5; two levels were treated in two patients. The mean preoperative VAS score was 8.1. The mean VAS score at postoperative year three was 1.6. CONCLUSION: Multiple types and brands of foreign interspinous devices are applied in Mexico which results in patients' clinical improvement. We proved that the use of the Mexican interspinous device can clinically improve patients with lumbar pain due to herniated disk. A decrease in the compression of the sac or the nerve roots by the hernia was observed in the comparative preoperative and postoperative MRI images.


Asunto(s)
Desplazamiento del Disco Intervertebral/cirugía , Vértebras Lumbares/cirugía , Prótesis e Implantes , Implantación de Prótesis/métodos , Adulto , Femenino , Humanos , Desplazamiento del Disco Intervertebral/complicaciones , Dolor de la Región Lumbar/etiología , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Dimensión del Dolor , Dolor Postoperatorio , Medicación Preanestésica , Estudios Prospectivos , Diseño de Prótesis , Resultado del Tratamiento
9.
Int Immunopharmacol ; 12(2): 441-6, 2012 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-22245427

RESUMEN

Lenalidomide (len) is an analog of thalidomide (thal), and both are used in the treatment of a diverse group of medical conditions. A common finding in this group is the detection of immunoglobulin in skin lesions, or high levels of immunoglobulin or myeloma protein in serum and urine. While their mechanism(s) of action is not known, the drugs are noted for their ability to modulate monocyte, lymphocyte, and natural killer cell functions; suppression of immunoglobulin synthesis could offer an explanation for their effectiveness in treating multiple myeloma (MM). Our objective was to determine if, on an equimolar basis, thal, len or dexamethasone (dex) could affect pokeweed (PWM)-induced synthesis of IgG, IgM and IL-2. When peripheral blood mononuclear cells were stimulated with PWM, len surpassed thal in suppressing IgM and IgG, and enhancing IL-2. Dex enhanced IgG, and suppressed IL-2. When the stimulated cells were treated with len (an effective promoter of IL-2 and suppressor of IgM and IgG) plus dex (an effective suppressor of IL-2 and enhancer of IgG), the net result was suppression of IgM and IgG. The synthesis of IgM and IgG by putative PWM-stimulated B cell blasts is significantly blocked by len. This suggest that the B-lymphocyte is a targeted cell for len, and that suppression of the synthesis of IgG and IgM could provide an explanation for the mechanism by which len effectively treats MM.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/farmacología , Dexametasona/farmacología , Inmunoglobulina G/inmunología , Inmunoglobulina M/inmunología , Mieloma Múltiple/tratamiento farmacológico , Talidomida/análogos & derivados , Linfocitos B/efectos de los fármacos , Linfocitos B/inmunología , Células Cultivadas , Dexametasona/administración & dosificación , Humanos , Inmunoglobulina G/biosíntesis , Inmunoglobulina M/biosíntesis , Interleucina-2/inmunología , Interleucina-6/inmunología , Lenalidomida , Leucocitos Mononucleares/efectos de los fármacos , Leucocitos Mononucleares/inmunología , Mieloma Múltiple/inmunología , Mitógenos de Phytolacca americana/inmunología , Mitógenos de Phytolacca americana/farmacología , Talidomida/administración & dosificación , Talidomida/farmacología
10.
Nutr Hosp ; 26(3): 495-500, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21892566

RESUMEN

OBJECTIVE: To determine the differences in the dynamics of dietary energy density (ED), food volume (FV) and energy intake (EI) between two groups of healthy children, in normal conditions, from Spain and Mexico. METHODS: Crossectional study which analyses the habitual diet of two healthy children groups, 1-4 years old, from Reus (Spain, n = 203) and Guadalajara (Mexico, n = 147). Dietary intake was assessed using the 24-hour recall. Anthropometric data were also obtained. We estimated Z-score of weight, height and BMI, and EI (kcal/day), ED (kcal/g), FV (g/day), El/kg body weight (kcal/kg/day) and FV/kg body weight (g/kg/day). RESULTS: The Spanish children consumed significantly more cereals (p < 0.05), vegetables, meat, fish and eggs than the Mexican children (p < 0.001), while the latter consumed significantly more sweets (p < 0.001). The mean El/kg body weight was 107.7 ± 36.2 kcal/kg/day in the children from Reus, and 102.4 ± 38.8 kcal/kg/day in the children from Guadalajara, without significant differences. While the ED was significantly higher (p < 0.001) in the Spanish sample (1.41 ± 0.35 kcal/g) that in the Mexican one (1.19 ± 0.37 kcal/g), we observed the contrary on FV per kilogram of weight: it was significantly (p < 0.001) greater in Mexicans (91.0 ± 36.1 g/kg/day) than in Spanish (79.5 ± 27.5 g/kg/day). CONCLUSION: In two populations with different contexts, the balance between energy intake and energy requirements is achieved in different ways, allowing energy intake per unit of weight and growth to be adequate. Future studies are needed to clarify the factors of a possible alteration of this equilibrium through time, in such a way, that it would probably contribute to the development of overweight and obesity in several environments.


Asunto(s)
Ingestión de Alimentos/fisiología , Ingestión de Energía/fisiología , Antropometría , Peso Corporal/fisiología , Preescolar , Dieta , Conducta Alimentaria , Femenino , Humanos , Lactante , Masculino , México , España
11.
Nutr. hosp ; 26(3): 495-500, mayo-jun. 2011. ilus, tab
Artículo en Inglés | IBECS | ID: ibc-98530

RESUMEN

Objective: To determine the differences in the dynamics of dietary energy density (ED), food volume (FV) and energy intake (EI) between two groups of healthy children, in normal conditions, from Spain and Mexico. Methods: Crossectional study which analyses the habitual diet of two healthy children groups, 1-4 years old, from Reus (Spain, n = 203) and Guadalajara (Mexico, n = 147).Dietary intake was assessed using the 24-hour recall. Anthropometric data were also obtained. We estimated Z-score of weight, height and BMI, and EI (kcal/day), ED(kcal/g), FV (g/day), EI/kg body weight (kcal/kg/day) and FV/kg body weight (g/kg/day). Results: The Spanish children consumed significantly more cereals (p < 0.05), vegetables, meat, fish and eggs than the Mexican children (p < 0.001), while the latter consumed significantly more sweets (p < 0.001). The mean EI/kg bodyweight was 107.7 ± 36.2 kcal/kg/day in the children from Reus, and 102.4 ± 38.8 kcal/kg/day in the children from Guadalajara, without significant differences. While the ED was significantly higher (p < 0.001) in the Spanish sample(1.41 ± 0.35 kcal/g) that in the Mexican one (1.19 ± 0.37kcal/g), we observed the contrary on FV per kilogram of weight: it was significantly (p < 0.001) greater in Mexicans(91.0 ± 36.1 g/kg/day) than in Spanish (79.5 ± 27.5 g/kg/day).Conclusion: In two populations with different contexts, the balance between energy intake and energy requirements is achieved in different ways, allowing energy in take per unit of weight and growth to be adequate. Future studies are needed to clarify the factors of a possible alteration of this equilibrium through time, in such away, that it would probably contribute to the development of overweight and obesity in several environments (AU)


Objetivo: Determinar las diferencias en la dinámica de la densidad energética (DE), volumen de alimentos (FV) e ingesta energética (IE), entre dos grupos de niños sanos, en condiciones de vida habitual, de España y México. Metodología: Estudio transversal que analiza la dieta habitual de niños sanos, entre 1-4 años, originarios de Reus (España, n = 203) y Guadalajara (México, n =147). La ingesta dietética fue evaluada con el recordatorio de 24 horas. Se valoraron algunos parámetros antropométricos. Se calculó puntuación-Z para el peso, talla e IMC, y la IE (kcal/día), DE (kcal/g), FV (g/día),IE/kg de peso corporal (kcal/kg/día) y FV/kg de peso corporal (g/kg/día).Resultados: Los niños españoles presentaron una mayor ingesta de cereales (p < 0,05), verduras, carne, pescado y huevo, que los mexicanos (p < 0,001), mientras que estos últimos tuvieron una mayor ingesta de azúcares (p <0,001). La media de IE/kg de peso fue de 107,7 ± 36,2kcal/kg/día en niños de Reus, y 102,4 ± 38,8 kcal/kg/día en niños de Guadalajara, sin diferencias significativas. Mientras la DE fue significativamente mayor (p < 0,001)en los españoles (1,41 ± 0,35 kcal/g) que en los mexicanos(1,19 ± 0,37 kcal/g), observamos lo contrario en FV/kg de peso: este fue significativamente mayor (p < 0,001) en los niños mexicanos (91,0 ± 36,1 g/kg/día) que en los españoles(79,5 ± 27,5 g/kg/día).Conclusión: En dos poblaciones con contextos diferentes, el equilibrio de la IE se logra por diferentes vías, permitiendo un aporte energético por unidad de peso y crecimiento adecuados. Se precisan futuros estudios que aclaren los factores mediante los cuales este equilibrio se altera a través del tiempo, y que quizá, contribuye al desarrollo de sobrepeso u obesidad, en diversos entornos (AU)


Asunto(s)
Humanos , Masculino , Femenino , Lactante , Preescolar , Ingestión de Alimentos/fisiología , Ingestión de Energía/fisiología , Antropometría , Peso Corporal , Dieta , Conducta Alimentaria , México , España
12.
Public Health Nutr ; 14(10): 1702-13, 2011 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-21486521

RESUMEN

OBJECTIVE: To assess the available data on the prevalence of metabolic syndrome (MS) in Latin-American countries. DESIGN: Systematic review. Searches were carried out in PubMed, ISIWeb, SCielo and Redalyc, using 'metabolic syndrome x' and 'prevalence' as keywords for titles and/or abstracts. Articles selected were cross-sectional studies in Latin-American countries, whose main objective was to study MS and whose study population is described below. MS must be determined using Adult Treatment Panel III criteria. Twelve studies with these criteria were selected, one of which was multi-centric. SETTING: Latin America. SUBJECTS: Apparently healthy subjects aged 18-65 years (including young adult, mature adult and elderly populations) of both genders. RESULTS: The general prevalence (weighted mean) of MS in Latin-American countries was 24·9 (range: 18·8-43·3) %. MS was slightly more frequent in women (25·3 %) than in men (23·2 %), and the age group with the highest prevalence of MS consisted of those over 50 years of age. The most frequent components of MS were low HDL cholesterol levels (62·9 %) and abdominal obesity (45·8 %). Similar outcomes were obtained from the multi-centre study on Latin-American populations analysed. CONCLUSIONS: The present review brings us closer to an understanding of the prevalence of MS in Latin-American countries. However, it is not possible to know the full scope of the problem, partly because data from some countries are not available, and because the methodological differences among the studies published up to the present limit a joint analysis of their results.


Asunto(s)
Síndrome Metabólico/epidemiología , Adolescente , Adulto , Anciano , HDL-Colesterol/sangre , Femenino , Humanos , América Latina/epidemiología , Estilo de Vida , Masculino , Persona de Mediana Edad , Estudios Multicéntricos como Asunto , Obesidad Abdominal/epidemiología , Prevalencia , Factores de Riesgo , Adulto Joven
13.
Cancer Metastasis Rev ; 30(1): 83-95, 2011 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-21249423

RESUMEN

The immune system regulates angiogenesis in cancer with both pro- and antiangiogenic activities. The induction of angiogenesis is mediated by tumor-associated macrophages and myeloid-derived suppressor cells (MDSC) which produce proinflammatory cytokines, endothelial growth factors (VEGF, bFGF…), and protease (MMP9) implicated in neoangiogenesis. Some cytokines (IL-6, IL-17…) activated Stat3 which also led to the production of VEGF and bFGF. In contrast, other cytokines (IFN, IL-12, IL-21, and IL-27) display an antiangiogenic activity. Recently, it has been shown that some antiangiogenic molecules alleviates immunosuppression associated with cancer by decreasing immunosuppressive cells (MDSC, regulatory T cells), immunosuppressive cytokines (IL-10, TGFß), and inhibitory molecules on T cells (PD-1). Some of these broad effects may result from the ability of some antiangiogenic molecules, especially cytokines to inhibit the Stat3 transcription factor. The association often observed between angiogenesis and immunosuppression may be related to hypoxia which induces both neoangiogenesis via activation of HIF-1 and VEGF and favors the intratumor recruitment and differentiation of regulatory T cells and MDSC. Preliminary studies suggest that modulation of immune markers (intratumoral MDSC and IL-8, peripheral regulatory T cells…) may predict clinical response to antiangiogenic therapy. In preclinical models, a synergy has been observed between antiangiogenic molecules and immunotherapy which may be explained by an improvement of immune status in tumor-bearing mice after antiangiogenic therapy. In preclinical models, antiangiogenic molecules promoted intratumor trafficking of effector cells, enhance endogenous anti-tumor response, and synergyzed with immunotherapy protocols to cure established murine tumors. All these results warrant the development of clinical trials combining antiangiogenic drugs and immunotherapy.


Asunto(s)
Inhibidores de la Angiogénesis/farmacología , Inmunidad/efectos de los fármacos , Neoplasias/irrigación sanguínea , Neoplasias/terapia , Neovascularización Patológica/terapia , Inhibidores de la Angiogénesis/uso terapéutico , Animales , Biomarcadores Farmacológicos , Terapia Combinada , Sinergismo Farmacológico , Humanos , Hipoxia/inmunología , Inmunoterapia , Neoplasias/inmunología , Neovascularización Patológica/tratamiento farmacológico , Neovascularización Patológica/inmunología
14.
Int Immunopharmacol ; 10(4): 487-92, 2010 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-20123041

RESUMEN

Thalidomide (Thal) provides effective treatment for erythema nodosum leprosum (ENL). In combination with Dexamethasome (Dex) it is an effective treatment for multiple myeloma (MM) and Waldenström's macroglobulinemia (WM). Thal's mechanism(s) of action in the treatment of these diverse medical conditions is not known, but it could be suppression of immunoglobulin (Ig) synthesis. Mononuclear cells were stimulated with pokeweed (PWM), and treated with Thal, Thal+Dex or Dex. The cultures were assayed for IgM and IgG. The maximum synthesis was expected to occur in cultures stimulated with PWM at 0.5, 5.0 or 10 microg/ml. The test agents at 15 microM each were expected to alter the response. Compared to cultures stimulated with PWM alone, there was significantly less Ig in the cultures containing Thal+PWM, and significantly more Ig in the cultures containing Thal+Dex+PWM or Dex+PWM (Wilcoxon). The median % of maximum was 57 for cultures treated with Thal+PWM; 184 for cultures treated with Thal+Dex+PWM, and 139 for cultures treated with Dex+PWM. Thal also acted as a co-stimulant with PWM and enhanced the synthesis of IL-2, IL-6 and DNA; whereas, Thal+Dex or Dex enhanced Ig synthesis, but suppressed IL-2, IL-6 and cell proliferation. Thal's ability to suppress Ig may explain its activity in ENL, MM and WM. The enhancement of Ig by Dex does not help to explain a role for Dex alone or in combination with Thal for the treatment of MM and WM.


Asunto(s)
Adyuvantes Inmunológicos , Antiinflamatorios/farmacología , Dexametasona/farmacología , Inmunoglobulina G/biosíntesis , Inmunoglobulina M/biosíntesis , Inmunosupresores/farmacología , Mitógenos de Phytolacca americana/farmacología , Talidomida/farmacología , Linfocitos B/efectos de los fármacos , Diferenciación Celular/efectos de los fármacos , Proliferación Celular/efectos de los fármacos , Células Cultivadas , Interacciones Farmacológicas , Humanos , Interleucina-2/biosíntesis , Interleucina-6/biosíntesis , Monocitos/efectos de los fármacos
15.
Nutr Metab Cardiovasc Dis ; 19(8): 563-70, 2009 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-19176282

RESUMEN

BACKGROUND AND AIMS: The role of diet in the aetiology of metabolic syndrome (MetS) is not well understood. The aim of the present study was to evaluate the relationship between adherence to the Mediterranean diet (MedDiet) and MetS. METHODS AND RESULTS: A cross-sectional study was conducted with 808 high cardiovascular risk participants of the Reus PREDIMED Centre. MetS was defined by the updated National Cholesterol and Education Program Adult Treatment Panel III criteria. An inverse association between quartiles of adherence to the MedDiet (14-point score) and the prevalence of MetS (P for trend<0.001) was observed. After adjusting for age, sex, total energy intake, smoking status and physical activity, participants with the highest score of adherence to the MedDiet (>/=9 points) had the lowest odds ratio of having MetS (OR [95% CI] of 0.44 [0.27-0.70]) compared to those in the lowest quartile. Participants with the highest MedDiet adherence had 47 and 54% lower odds of having low HDL-c and hypertriglyceridemia MetS criteria, respectively, than those in the lowest quartile. Some components of the MedDiet, such as olive oil, legumes and red wine were associated with lower prevalence of MetS. CONCLUSION: Higher adherence to a Mediterranean diet is associated with a significantly lower odds ratio of having MetS in a population with a high risk of cardiovascular disease.


Asunto(s)
Enfermedades Cardiovasculares/prevención & control , Dieta Mediterránea , Estilo de Vida , Síndrome Metabólico/prevención & control , Cooperación del Paciente , Conducta de Reducción del Riesgo , Anciano , Enfermedades Cardiovasculares/epidemiología , Enfermedades Cardiovasculares/etiología , Estudios Transversales , Femenino , Humanos , Modelos Logísticos , Masculino , Síndrome Metabólico/epidemiología , Síndrome Metabólico/etiología , Persona de Mediana Edad , Evaluación Nutricional , Oportunidad Relativa , Prevalencia , Medición de Riesgo , Factores de Riesgo , España/epidemiología
16.
Immunopharmacol Immunotoxicol ; 30(2): 307-16, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-18569086

RESUMEN

Angiogenesis is essential for tumor growth. In the treatment of tumors with thalidomide, a rationale for its use is that it inhibits angiogenesis. To form new blood vessels, endothelial cells must proliferate. The authors were interested in describing some of the circumstances by which thalidomide may influence proliferation of endothelial cells. Human umbilical vein derived endothelial cells (HUVECs) were exposed to 4.0 or 100 microg/ml of thalidomide in dimethylsulfoxide or to 4 microg/ml of thalidomide prepared an aqueous solutions. Proliferation was determined by measuring incorporation of (3)H-thymidine. Regardless of the solvent used to dissolve thalidomide, the HUVECs treated with thalidomide were not inhibited in their ability to incorporate (3)H-thymidine.


Asunto(s)
Inhibidores de la Angiogénesis/farmacología , Proliferación Celular/efectos de los fármacos , Células Endoteliales/metabolismo , Extractos Hepáticos/química , Hígado/enzimología , Neovascularización Patológica/metabolismo , Talidomida/farmacología , Inhibidores de la Angiogénesis/química , Células Cultivadas , Células Endoteliales/patología , Humanos , Concentración de Iones de Hidrógeno , Hidrólisis , Hígado/química , Neoplasias/tratamiento farmacológico , Neoplasias/metabolismo , Neovascularización Patológica/tratamiento farmacológico , Talidomida/química
17.
Prostate ; 68(5): 563-70, 2008 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-18247399

RESUMEN

BACKGROUND: There is a paucity of information regarding prostate cancer (PCa) risk factors among Hispanics, the fastest-growing ethnic group in the United States. METHODS: This population-based case-control study included 176 Texas men of Mexican descent with PCa and 174 age- and ethnicity-matched controls. Demographic, lifetime occupational history, family history of cancer, lifestyle (e.g., smoking, alcohol, diet, and recreational physical activity) and anthropometric information were collected by personal interviews. Chemical exposure and physical activity were determined using job-exposure matrices for each reported job. RESULTS: Logistic regression models adjusted for relevant covariates were used to evaluate their independent effects. Compared to controls, cases were three times more likely to work in jobs with high agrichemical exposure (OR = 3.44, 95% CI 1.84-6.44), and 54% less likely to work in jobs with moderate/high occupational physical activity (OR = 0.46, 95% CI 0.28-0.77). In analyses stratified by stage, cases with organ-confined PCa were three times more likely to have high agrichemical exposure (OR = 3.39, 9%CI 1.68-6.84), and 56% less likely to have moderate/high levels of occupational physical activity (OR = 0.44, 95% CI 0.26-0.76). Increased risk of being diagnosed with advanced PCa was associated with obesity at time of diagnosis (OR = 2.50, 95% CI 1.20-5.20) and high levels of agrichemical exposure (OR = 4.65, 95% CI 1.97-10.97), but not with occupational physical activity. CONCLUSIONS: This case-control study, the first conducted in a homogeneous Hispanic population, identified modifiable PCa risk factors, such as physical activity and agrichemical exposure, which may be useful in developing interventions for this understudied population.


Asunto(s)
Americanos Mexicanos , Neoplasias de la Próstata/etnología , Neoplasias de la Próstata/epidemiología , Anciano , Agroquímicos/efectos adversos , Estudios de Casos y Controles , Humanos , Estilo de Vida/etnología , Modelos Logísticos , Masculino , Persona de Mediana Edad , Actividad Motora , Análisis Multivariante , Obesidad/etnología , Exposición Profesional/efectos adversos , Neoplasias de la Próstata/inducido químicamente , Factores de Riesgo , Texas/epidemiología
18.
Eur J Clin Nutr ; 62(5): 651-9, 2008 May.
Artículo en Inglés | MEDLINE | ID: mdl-17440519

RESUMEN

OBJECTIVE: To evaluate associations between components of the Mediterranean diet and circulating markers of inflammation in a large cohort of asymptomatic subjects at high risk for cardiovascular disease. SUBJECTS/METHODS: A total of 339 men and 433 women aged between 55 and 80 years at high cardiovascular risk because of presence of diabetes or at least three classical cardiovascular risk factors, food consumption was determined by a semi-quantitative food frequency questionnaire. Serum concentrations of high-sensitivity C-reactive protein (CRP) were measured by immunonephelometry and those of interleukin-6 (IL-6), intracellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) by enzyme-linked immunosorbent assay. RESULTS: After adjusting for age, gender, body mass index, diabetes, smoking, use of statins, non-steroidal antiinflammatory drugs and aspirin, a higher consumption of fruits and cereals was associated with lower concentrations of IL-6 (P for trend 0.005;both). Subjects with the highest consumption of nuts and virgin olive oil showed the lowest concentrations of VCAM-1, ICAM-1, IL-6 and CRP; albeit only for ICAM-1 was this difference statistically significant in the case of nuts (for trend 0.003) and for VCAM-1 in the case of virgin olive oil (P for trend 0.02). Participants with higher adherence to the Mediterranean-type diet did not show significantly lower concentrations of inflammatory markers (P<0.1 for VCAM-1 and ICAM-1). CONCLUSIONS: The consumption of some typical Mediterranean foods (fruits, cereals, virgin olive oil and nuts) was associated with lower serum concentrations of inflammatory markers especially those related to endothelial function, in subjects with high cardiovascular risk living in a Mediterranean country.


Asunto(s)
Enfermedades Cardiovasculares/sangre , Enfermedades Cardiovasculares/epidemiología , Dieta Mediterránea , Inflamación/sangre , Anciano , Anciano de 80 o más Años , Estudios de Cohortes , Estudios Transversales , Citocinas/biosíntesis , Citocinas/sangre , Femenino , Humanos , Molécula 1 de Adhesión Intercelular/sangre , Masculino , Persona de Mediana Edad , Nueces , Aceite de Oliva , Aceites de Plantas/administración & dosificación , Factores de Riesgo , Molécula 1 de Adhesión Celular Vascular/sangre
19.
Telemed J E Health ; 13(5): 519-33, 2007 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-17999614

RESUMEN

Telemedicine systems have been progressively paying more and more attention to wireless technologies for personal area network (PAN). Depending on the features of the system to be developed, different technologies need to be deployed. These technologies are supposed to coexist, even though many of them operate in the same 2.4-GHz band. In case of interference, there are safety mechanisms included in the standard. However, these mechanisms do not work exactly as expected in theory. This paper presents an experiment with a real Bluetoothbased ECG system and Zigbee temperature sensors in an environment where a WiFi network is operating. The main novelty of the paper is the real implementation and experiments of all three wireless technologies for both continuous and discrete medical signals. Conclusions and recommendations for reliable operation are given for all three involved technologies.


Asunto(s)
Campos Electromagnéticos/efectos adversos , Telemedicina/métodos , Telemetría/instrumentación , Redes de Comunicación de Computadores , Humanos , Monitoreo Ambulatorio , Proyectos Piloto , Programas Informáticos , España , Telemedicina/organización & administración
20.
Br J Sports Med ; 41(9): 592-6; discussion 596, 2007 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-17502334

RESUMEN

OBJECTIVE: To evaluate genotoxicity of anabolic androgenic steroids (AAS) in male bodybuilders by a micronucleus assay in buccal mucosa cells. METHODS: 11 male bodybuilders volunteered to participate in this study and two groups were formed: group 1 (n = 6), without AAS consumption and group 2 (n = 5), with AAS consumption. A sample of buccal epithelium was taken from each participant once a week for 6 weeks. Samples were fixed, stained and analysed by a light microscope, and 2000 cells were counted from each slide. Results are expressed as micronucleated cells (MNC) per 1000 cells and were analysed by the Mann-Whitney U test and Wilcoxon's test. RESULTS: A marked increased in MNC was seen in bodybuilders with AAS consumption compared with those without AAS consumption (mean (SD) 4.1 (2.4) MNC/1000 cells vs 0.4 (0.4) MNC/1000 cells, respectively; p<0.004). Intragroup comparisons showed no differences in the MNC frequencies during the sampling time in group 1, whereas the MNC frequency in group 2 varied significantly, reaching the highest MNC frequencies in the third and fourth week of sampling (5.9 (2.4) MNC/1000 cells; 5.8 (1.8) MNC/1000 cells, respectively); frequency in the first sampled week was 1.1 (0.1) MNC/1000 cells. Significant differences in all sampled weeks were found between the two groups. CONCLUSION: AAS consumption increased the frequency of MNC from buccal mucosa in bodybuilders.


Asunto(s)
Anabolizantes/toxicidad , Micronúcleos con Defecto Cromosómico/inducido químicamente , Mucosa Bucal/patología , Levantamiento de Peso , Adulto , Estudios de Casos y Controles , Humanos , Masculino , Pruebas de Micronúcleos
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