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1.
Pediatr Surg Int ; 39(1): 236, 2023 Jul 20.
Artículo en Inglés | MEDLINE | ID: mdl-37468717

RESUMEN

INTRODUCTION: During "bowel management week," abdominal radiographs are used to monitor the amount and location of stool. A radiologist familiar with the treatment plan can provide an improved interpretation. The goal of this paper is to standardize the radiological reports during a bowel management week. METHODS: We saw 744 patients during bowel management week from May 2016 until March 2023. Diagnosis included: anorectal malformation (397), idiopathic constipation (180), Hirschsprung disease (89), and spina bifida (78). Laxatives were the treatment for 51% of patients, and 49% received enemas. Characteristic radiographs were selected for each treatment group for a proposed reading standardization. RESULTS: When the stool is visualized, it is crucial to report its location. Having a contrast enema helps with the correct interpretation of the colonic anatomy. It is also essential to always compare the amount of stool with the radiograph from the previous day to determine if there is an increase or decrease in stool. Examples of radiographs are shown to guide the use of the preferred proposed terminology. CONCLUSION: Providing information regarding which treatment modality the patient is receiving and stating that a patient is on a bowel management week treatment is crucial for the radiologist to provide adequate interpretation. The radiologist must be familiar with the treatment goals and purpose of the daily radiograph.


Asunto(s)
Incontinencia Fecal , Enfermedad de Hirschsprung , Humanos , Estreñimiento/terapia , Laxativos , Intestinos , Enema , Enfermedad de Hirschsprung/terapia , Enfermedad de Hirschsprung/tratamiento farmacológico , Incontinencia Fecal/terapia
2.
J Eur Acad Dermatol Venereol ; 33 Suppl 5: 3-12, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31536168

RESUMEN

BACKGROUND: The frequency of dermatological procedures is steadily increasing, accompanying a growing demand from patients. Chemical peels are a method of resurfacing in the treatment of various skin conditions. However, during the early healing process, patients may impose downtime on themselves. The erythema, pain and poor aesthetic appearance of the skin can lead to unwillingness to participate in social or professional activities. OBJECTIVES: The objective of this study was to evaluate the tolerance and efficacy of a repair cream based on Rhealba Oat plantlets extract and active healing compounds after a peeling procedure. METHODS: Men and women, aged 18-65 years, with Fitzpatrick phototype I-IV, who had previously received a medium-depth chemical peel on the face (TCA 30%) entered with their consent a clinical study evaluating the new test product based on Rhealba Oat and active healing compounds. At the beginning of the study, the selected patients received a TCA 30% medium-depth peel. Afterwards, they were treated during 29 days with the repair cream and evaluated for the benefits to downtime and pain. RESULTS: Significant reductions of pain (P < 0.0114) and erythema (P < 0.0001) were observed in the study. The downtime reduction with the tested cream was 92% - from 9 days after the previous peeling procedure to 0.74 days with application of the tested cream - a difference of 8.39 days. CONCLUSION: In consequence, the tested repair cream based on Rhealba Oat plantlets extract and active healing compounds brings clinical benefit to patients who undergo peeling procedures. By reducing pain and downtime, it allows patients to get back to their daily life activities a week earlier than with previous peels.


Asunto(s)
Avena/química , Quimioexfoliación , Eritema/tratamiento farmacológico , Extractos Vegetales/uso terapéutico , Cicatrización de Heridas/efectos de los fármacos , Adolescente , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pomadas
3.
J Hematol Oncol ; 10(1): 80, 2017 03 31.
Artículo en Inglés | MEDLINE | ID: mdl-28359287

RESUMEN

BACKGROUND: Pharmacological inhibition of B cell receptor (BCR) signaling has recently emerged as an effective approach in a wide range of B lymphoid neoplasms. However, despite promising clinical activity of the first Bruton's kinase (Btk) and spleen tyrosine kinase (Syk) inhibitors, a small fraction of patients tend to develop progressive disease after initial response to these agents. METHODS: We evaluated the antitumor activity of IQS019, a new BCR kinase inhibitor with increased affinity for Btk, Syk, and Lck/Yes novel tyrosine kinase (Lyn), in a set of 34 B lymphoid cell lines and primary cultures, including samples with acquired resistance to the first-in-class Btk inhibitor ibrutinib. Safety and efficacy of the compound were then evaluated in two xenograft mouse models of B cell lymphoma. RESULTS: IQS019 simultaneously engaged a rapid and dose-dependent de-phosphorylation of both constitutive and IgM-activated Syk, Lyn, and Btk, leading to impaired cell proliferation, reduced CXCL12-dependent cell migration, and induction of caspase-dependent apoptosis. Accordingly, B cell lymphoma-bearing mice receiving IQS019 presented a reduced tumor outgrowth characterized by a decreased mitotic index and a lower infiltration of malignant cells in the spleen, in tight correlation with downregulation of phospho-Syk, phospho-Lyn, and phospho-Btk. More interestingly, IQS019 showed improved efficacy in vitro and in vivo when compared to the first-in-class Btk inhibitor ibrutinib, and was active in cells with acquired resistance to this latest. CONCLUSIONS: These results define IQS019 as a potential drug candidate for a variety of B lymphoid neoplasms, including cases with acquired resistance to current BCR-targeting therapies.


Asunto(s)
Linfoma de Células B/tratamiento farmacológico , Inhibidores de Proteínas Quinasas/farmacología , Proteínas Proto-Oncogénicas c-bcr/antagonistas & inhibidores , Piridonas/farmacología , Pirimidinas/farmacología , Animales , Línea Celular Tumoral , Evaluación Preclínica de Medicamentos/métodos , Resistencia a Antineoplásicos/efectos de los fármacos , Xenoinjertos , Humanos , Ratones , Inhibidores de Proteínas Quinasas/uso terapéutico , Proteínas Tirosina Quinasas/antagonistas & inhibidores , Piridonas/uso terapéutico , Pirimidinas/uso terapéutico
4.
J Pastoral Care Counsel ; 70(1): 53-62, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26956751

RESUMEN

The provision of spiritual care, and the training of spiritual care providers, must be embedded within the larger systems (economic, social, generational, and environmental) and communities within which clients reside. This study analyzes the results of a systems approach to CPE training that focused on the rural context of Swan River, Manitoba. It addresses the need for new approaches to contextualizing CPE training and for understanding the uniqueness of rural contexts in particular.


Asunto(s)
Servicio de Capellanía en Hospital/organización & administración , Cuidado Pastoral/educación , Servicios de Salud Rural/organización & administración , Espiritualidad , Actitud del Personal de Salud , Humanos , Manitoba , Población Rural
5.
J Physiol Biochem ; 65(1): 25-32, 2009 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-19588728

RESUMEN

The potential of conjugated linoleic acid (CLA) as an anti-obesity molecule for humans is still a matter for debate. Thus, a great deal of scientific work is focussed on the research of new effective molecules without deleterious effects on health. The aim of the present work was to analyse the effects of jacaranda seed oil, rich in a conjugated linolenic acid (CLNA), jacaric acid (cis-8,trans-10,cis-12), on body fat, serum parameters and liver composition in rats, and to compare these effects with those of trans-10,cis-12 CLA. Twenty-six male Wistar rats were divided into three groups fed with high-fat diets, supplemented or not (control group) with 0.5% trans-10,cis-12 CLA (CLA group) or 0.5% jacaric acid (CLNA group) for 7 weeks. No statistical differences in food intake or in final body weight were found. Whereas CLA reduced adipose tissue size, CLNA did not. Both CLA and CLNA significantly reduced non-HDL-cholesterol. In spite of a lack of significant changes in glucose and insulin levels, HOMA-IR index was significantly increased, as well as did non-esterified fatty acid levels in CLNA-fed rats. No changes in liver composition were observed. In conclusion, under our experimental conditions, jacaric acid, unlike CLA, does not show a body-fat lowering effect. Even though it leads to a healthy lipoprotein profile, it impairs insulin function. Consequently, it cannot be proposed as an anti-obesity molecule.


Asunto(s)
Tejido Adiposo/efectos de los fármacos , Tejido Adiposo/metabolismo , Ácidos Linoleicos Conjugados/farmacología , Hígado/efectos de los fármacos , Hígado/metabolismo , Animales , Peso Corporal/efectos de los fármacos , Ingestión de Alimentos , Masculino , Tamaño de los Órganos/efectos de los fármacos , Aceites de Plantas/química , Ratas , Ratas Wistar , Semillas/química
6.
Rev. esp. quimioter ; 22(1): 4-9, mar. 2009. tab
Artículo en Inglés | IBECS | ID: ibc-77641

RESUMEN

Introduction. To identify factors influencing decisions ininitial management of community-acquired pneumonia(CAP) admitted to hospital through Emergency departments.Methods. Records of CAP adult patients admitted to 24Spanish hospitals in January-Mars 2003 were reviewed. Patientssent for ambulatory treatment were excluded.Results. 341 patients (67.0 ± 24.6 years; 65.3 % males)were included; 39 % were taking antibiotics at attendance.PSI was (% patients): I-II (19.7 %), III (14.7 %), and IV-V(65.6 %). Comorbidities were: COPD (37.2 %), heart disease(24.6 %), hypertension (17 %), diabetes mellitus (10.8 %),and malignancies (10 %). Pneumococcal/Legionella urinaryantigens were performed in 34.0 %/42.2 % patients. Fewer(p ≤ 0.006) rapid tests were performed in class IV-V(p = 0.001), with higher (p ≤ 0.01) pneumococcal positiveresults in class V. Initial treatment was fluoroquinolone(37.5 %), beta-lactam + macrolide (26.4 %), beta-lactam(22.9 %), macrolide (4.7 %), and others (8.5 %). Patients referredto Internal Medicine had higher heart disease(p = 0.06) and hypertension (p = 0.001) as comorbidity thanthose at Short-Stay Units or Pneumology. COPD patientswere equally distributed between Internal Medicine andPneumology, with differences vs. Short-Stay Units.Conclusions. Rapid diagnostic tests were underused,maybe due to broad empirical treatments covering drug-resistantpneumococci and L. pneumophila (regardless PSI andcomorbidity). Presence of comorbidities or positive resultsin rapid diagnostic tests seems to influence the medicalward to which the patient is referred to, but not initialtreatment (AU)


Introducción. Identificación de los factores que influyenen el manejo inicial de los pacientes con neumoníaadquirida en la comunidad (NAC) ingresados en el hospitala través de los Servicios de Urgencias.Material y métodos. Se revisaron los registros de pacientesadultos con NAC admitidos en 24 hospitales españolesen el período comprendido entre los meses deenero-marzo de 2003. Los pacientes remitidos para tratamientoambulatorio fueron excluidos.Resultados. Se incluyeron 341 pacientes (67,0 ± 24,6años; 65,3 % varones). El 39 % estaba tomando antibióticosen el momento de atención en Urgencias. El grado deFine de los pacientes fue (% pacientes): I-II (19,7 %),III (14,7 %), y IV-V (65,6 %). Las comorbilidades fueron:EPOC (37,2 %), enfermedad coronaria (24,6 %), hipertensión(17 %), diabetes mellitus (10,8 %) y neoplasia (10 %). Lostests de antígenos urinarios de neumococo y Legionellafueron realizados en 34,0 % y 42,2 % pacientes respectivamente.En las clases IV-V (p ≤ 0,006) se realizaron menostests rápidos, con mayor número de resultados positivospara neumococos (p ≤ 0,01) en la clase V. El tratamientoinicial fue fluoroquinolonas (37,5 %), betalactámico +macrólido(26,4 %), betalactámico (22,9 %), macrólido (4,7 %),y otros (8,5 %). Los pacientes ingresados en Medicina Internatenían una mayor incidencia de enfermedad cardiaca(p = 0,06) e hipertensión (p = 0,001) como comorbilidadque aquellos ingresados en Neumología o en Unidades deCorta Estancia. Los pacientes con EPOC fueron igualmentedistribuidos entre Medicina Interna y Neumología, con diferenciasrespecto a las Unidades de Corta Estancia.Conclusiones. Los tests diagnósticos rápidos fueron infrautilizados,debido posiblemente a la amplia cobertura delos tratamientos empíricos cubriendo neumococo resistente yL. pneumophila (independientemente del Fine y la comorbilidad) (AU)


Asunto(s)
Humanos , Masculino , Femenino , Anciano , Neumonía/complicaciones , Neumonía/diagnóstico , Neumonía/epidemiología , Neumonía/prevención & control , Neumonía/terapia , Antibacterianos/administración & dosificación , Antibacterianos/efectos adversos , Antibacterianos/síntesis química , Pruebas de Sensibilidad Microbiana/métodos , Pruebas de Sensibilidad Microbiana/tendencias , Pruebas de Sensibilidad Microbiana
7.
Toxicol Appl Pharmacol ; 239(2): 169-77, 2009 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-19121333

RESUMEN

Arsenic (As) is a toxic metalloid widely present in the environment. Human exposure to As has been associated with the development of skin and internal organ cancers and cardiovascular disorders, among other diseases. A few studies report decreases in intelligence quotient (IQ), and sensory and motor alterations after chronic As exposure in humans. On the other hand, studies of rodents exposed to high doses of As have found alterations in locomotor activity, brain neurochemistry, behavioral tasks, and oxidative stress. In the present study both male and female C57Bl/6J mice were exposed to environmentally relevant doses of As such as 0.05, 0.5, 5.0, or 50 mg As/L of drinking water for 4 months, and locomotor activity was assessed every month. Male mice presented hyperactivity in the group exposed to 0.5 mg As/L and hypoactivity in the group exposed to 50 mg As/L after 4 months of As exposure, whereas female mice exposed to 0.05, 0.5, and 5.0 mg As/L exhibited hyperactivity in every monthly test during As exposure. Furthermore, striatal and hypothalamic dopamine content was decreased only in female mice. Also decreases in tyrosine hydroxylase (TH) and cytosolic thioredoxin (Trx-1) mRNA expression in striatum and nucleus accumbens were observed in male and female mice, respectively. These results indicate that chronic As exposure leads to gender-dependent alterations in dopaminergic markers and spontaneous locomotor activity, and down-regulation of the antioxidant capacity of the brain.


Asunto(s)
Arsenitos/toxicidad , Encéfalo/efectos de los fármacos , Dopamina/metabolismo , Contaminantes Ambientales/toxicidad , Actividad Motora/efectos de los fármacos , Compuestos de Sodio/toxicidad , Tiorredoxinas/biosíntesis , Animales , Encéfalo/enzimología , Encéfalo/metabolismo , Cuerpo Estriado/efectos de los fármacos , Cuerpo Estriado/metabolismo , Citosol/enzimología , Citosol/metabolismo , Relación Dosis-Respuesta a Droga , Regulación hacia Abajo , Femenino , Hipotálamo/efectos de los fármacos , Hipotálamo/metabolismo , Masculino , Ratones , Ratones Endogámicos C57BL , Factores Sexuales , Factores de Tiempo , Tirosina 3-Monooxigenasa/metabolismo
8.
Colloids Surf B Biointerfaces ; 65(1): 92-7, 2008 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-18440206

RESUMEN

The formation of complexes between soluble potato starch and three commercial alkyl polyglycosides has been studied by means of surface tension measurements at 37 degrees C. All surfactants assayed form complexes with starch, the quantity of bound surfactant being proportional to the amount of starch present in the solution. For all alkyl polyglycoside-starch systems tested, there is a direct proportional relationship between the bound and total surfactant concentrations, so that the formation of the surfactant-starch complex continues until the minimum surface tension is reached without detectable starch saturation prior to the occurrence of surfactant micelles. Binding isotherms and Scatchard plots support the idea that alkyl polyglycosides are bound to amylose by positive cooperative binding and to amylopectin by non-cooperative Langmuir-type binding.


Asunto(s)
Glicósidos/química , Polímeros/química , Solanum tuberosum/química , Almidón/química , Tensoactivos/química , Micelas , Tensión Superficial
10.
Phytomedicine ; 14(10): 690-5, 2007 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-17292594

RESUMEN

A mixture of fatty acids obtained from sugar cane (Saccharum officinarum L.) wax oil (FAM), in which the main constituents are palmitic, oleic, linoleic, and linolenic acids, was evaluated in two models of inflammation: zymosan-induced arthritis and in the tail test for psoriasis, both on mice. In the first model, FAM significantly reduced zymozan-induced increase of beta glucuronidase (DE(50) 90+/-7 mg/kg). Histopathological studies showed inhibition in cellular infiltration and reduction of synovial hyperplasia and synovitis, whereas in the second test, histopathological and ultrastructural studies showed that topical application of FAM induced orthokeratosis with the presence of keratohyalin granules in the previously parakeratotic adult mouse tail, and without effects on epidermal thickness. The ED(50) of FAM in this model was 155+/-10 mg. The results of our studies showed that topical application of FAM exerts an important anti-inflammatory activity in both tests without evidence of irritant effects. The anti-inflamatory effects exerted by FAM may be due to its inhibitory effects on arachidonic acid metabolism. To our knowledge, this is the first report on the anti-inflammatory effect of sugar cane by-products in experimental models of arthritis and psoriasis.


Asunto(s)
Antiinflamatorios no Esteroideos/farmacología , Ácidos Grasos/farmacología , Aceites de Plantas/farmacología , Saccharum , Animales , Antiinflamatorios no Esteroideos/administración & dosificación , Antiinflamatorios no Esteroideos/química , Antiinflamatorios no Esteroideos/uso terapéutico , Artritis/patología , Artritis/prevención & control , Modelos Animales de Enfermedad , Ácidos Grasos/administración & dosificación , Ácidos Grasos/química , Ácidos Grasos/uso terapéutico , Femenino , Ratones , Ratones Endogámicos , Aceites de Plantas/administración & dosificación , Aceites de Plantas/química , Aceites de Plantas/uso terapéutico , Psoriasis/patología , Psoriasis/prevención & control
11.
J Physiol Biochem ; 63(4): 297-304, 2007 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-18457005

RESUMEN

Numerous studies have demonstrated that conjugated linoleic acid (CLA) modulates body composition, reducing body fat accumulation in various mammalian species. However, very few studies have been carried out to assess the effect of CLA on previously stored body fat. The aim of the present work was to analyse the effectiveness of trans-10,cis-12 CLA in improving alterations produced by high-fat feeding in body fat and serum parameters when it was included in an energy-restricted diet. For this purpose male Syrian Golden hamsters were fed on high-fat diet for 7 weeks in order to increase their body fat content, and a further 25% energy-restricted diet supplemented or not with 0.5% trans-10,cis-12 CLA for 3 weeks. Adipose tissues, liver and gastrocnemious muscles were dissected and weighed. Adipocyte diameter and number were assessed in epididymal adipose tissue. Total cholesterol, triacylglycerols, non-esterified fatty acids and glucose were measured in serum. Three weeks of energy restriction resulted in a reduction in body weight and white adipose tissue size in all anatomical locations, without changes in liver and gastrocnemious muscle weights. Epididymal adipocyte size was reduced, but total adipocyte number remained unchanged. Serum cholesterol, triacylglycerols and glucose were significantly reduced. No differences were observed between the restricted groups (control and CLA supplemented). In conclusion, under our experimental conditions, the addition of trans-10,cis-12 CLA to the diet does not increase the benefits produced by energy restriction.


Asunto(s)
Adiposidad/efectos de los fármacos , Ácidos Linoleicos Conjugados/administración & dosificación , Tejido Adiposo/efectos de los fármacos , Tejido Adiposo/metabolismo , Animales , Peso Corporal , Colesterol/sangre , Cricetinae , Ingestión de Energía , Ácidos Grasos no Esterificados/sangre , Masculino
12.
Lipids ; 41(11): 993-1001, 2006 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-17263299

RESUMEN

The aim of the present study was to investigate the effect of cis-9,trans-11 and trans-10,cis-12 CLA on FA composition of TAG in epididymal adipose tissue and liver, and of hepatic phospholipids PL. Twenty-four Syrian Golden hamsters were randomly divided into three groups of eight animals each and fed semipurified atherogenic diets supplemented with either 0.5 g/100 g diet of linoleic acid or cis-9,trans-11 or trans-12,cis-9 CLA for 6 wk. Total lipids were extracted, and TAG and PL were separated by TLC. FA profile in lipid species from liver and adipose tissue, as well as in feces, was determined by GC. Trans-10,cis-12 CLA feeding significantly reduced linoleic and linolenic acids in TAG from both tissues, leading to reduced total PUFA content. Moreover, in the epididymal adipose tissue docosenoic and arachidonic acids were significantly increased. In liver PL, although no changes in individual FA were observed, total saturated FA (SFA) were decreased. No changes in TAG and PL FA profiles were induced by the cis-9,trans-11 CLA. TAG and PL incorporated cis-9,trans-11 more readily than trans-10,cis-12 CLA. This difference was not due to differential intestinal absorption, as shown by the analysis of feces. We concluded that only trans-10,cis-12 CLA induces changes in FA composition. Whereas increased PUFA content was observed in either liver or adipose tissue TAG, decreased SFA were found in liver PL. Incorporation of cis-9,trans-11 CLA in TAG is greater than that of trans-10,cis-12 CLA, but this is not due to differences in intestinal absorption.


Asunto(s)
Tejido Adiposo/metabolismo , Ácidos Linoleicos Conjugados/fisiología , Hígado/metabolismo , Tejido Adiposo/química , Animales , Cricetinae , Heces/química , Isomerismo , Ácidos Linoleicos Conjugados/biosíntesis , Ácidos Linoleicos Conjugados/química , Hígado/química , Masculino , Mesocricetus
13.
J Physiol Biochem ; 62(2): 81-7, 2006 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-17217162

RESUMEN

The aim of the present work was to determine whether t-10, c-12 conjugated linoleic acid (CLA) feeding was able to reduce body fat accumulation and improve the serum lipid profile in adult hamsters fed an atherogenic diet, in order to compare these effects with those observed in young growing hamsters. Young and adult hamsters were fed semi-purified atherogenic diets supplemented with 0.5 % linoleic acid or 0.5% t-10, c-12 CLA for 6 weeks. Body weight and food intake were measured every two days. Adipose tissue from different anatomical locations, liver and gastrocnemious muscle were dissected and weighed. Cholesterol, triacylglycerols, non-esterified fatty acids and proteins were determined spectrophotometrically and water content by gravimetry. In young hamsters, no significant differences were found in food intake, final body weight and gastrocnemious muscle weight. White adipose tissue weights were reduced, liver weight was increased and cholesterol and triacyl-glycerols in both serum and liver were reduced. In adult hamsters, CLA feeding decreased food intake and adipose tissue weights. No changes were observed in other parameters. The present study demonstrates that age has an influence in hamster responsiveness to t-10, c-12 CLA because, although when this isomer is added to an atherogenic diet it reduces body fat accumulation in both young and adults hamsters, the lessening of the effects on serum lipids brought about by atherogenic feeding is only observed in young animals. Moreover, it is clear that liver is a target for CLA in young but not in adult hamsters.


Asunto(s)
Tejido Adiposo/efectos de los fármacos , Dieta Aterogénica , Ácidos Linoleicos Conjugados/farmacología , Lípidos/sangre , Triglicéridos/metabolismo , Tejido Adiposo/anatomía & histología , Envejecimiento , Animales , Peso Corporal/efectos de los fármacos , Colesterol/sangre , Colesterol/metabolismo , Cricetinae , Ingestión de Alimentos , Ingestión de Energía , Ácidos Grasos no Esterificados/sangre , Hígado/química , Masculino , Mesocricetus
14.
J Physiol Biochem ; 61(2): 363-9, 2005 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-16180334

RESUMEN

The ability of conjugated linoleic acid (CLA) to reduce adiposity may be due to changes in energy expenditure and/or direct effects on adipocyte lipid metabolism. The aim of the present work was to analyse if CLA supplementation modifies lipolytic activity in adipose tissue from hamsters fed on high-fat diet. Hamsters were divided into two groups and fed on diets supplemented with either 0.5% linoleic acid (control) or 0.5% trans-10,cis-12 CLA. After 6 weeks, animals were fasted overnight and adipose tissues were dissected and weighed. Adipocytes were isolated by collagenase digestion and incubated in Krebs-Ringer bicarbonate buffer with or without several agents acting at different levels of the lipolytic cascade. Adipocyte diameters were measured by microscopy. Adipose tissue DNA content was assessed by spectrophotometry. Animals fed on CLA diet showed significantly reduced adipose tissue mass. No differences between both groups was found for basal lipolysis, lipolytic effects of isoproterenol, forskolin, dibutyryl-cAMP and isobutylmethylxanthine, and pD2 for isoproterenol. A similar total DNA amount was found in adipose tissue of both groups, showing that CLA diet had no effect on total cell number per fat pad. Although DNA content per gram tissue, an indirect reverse index of cell size, was significantly increased in CLA fed hamsters, microscopy did not reveal differences in medium mature adipocyte diameter, nor in cell size distribution between both groups. These results suggest that adipose tissue size reduction induced by trans-10,cis-12 CLA intake is not due to changes in lipolysis. Reduced preadipocyte differentiation into mature adipocytes may account for this fat-lowering effect.


Asunto(s)
Tejido Adiposo/efectos de los fármacos , Composición Corporal/efectos de los fármacos , Dieta Aterogénica , Ácidos Linoleicos Conjugados/farmacología , Lipólisis/fisiología , Adipocitos/citología , Tejido Adiposo/química , Tejido Adiposo/metabolismo , Animales , Tamaño de la Célula , Cricetinae , ADN/análisis , Masculino , Mesocricetus , Factores de Tiempo
15.
Nutr Hosp ; 20(3): 223-7, 2005.
Artículo en Español | MEDLINE | ID: mdl-15989070

RESUMEN

The term conjugated linoleic acid (CLA) refers to a series of linoleic acid isomers present in meat and diary products from ruminants that have their double bonds in a conjugated position. The aim of the present work was to study the effects of a CLA isomer, trans-10,cis-12, on cholesterolemia and biliary lithiasis risk in an animal model of diet-induced hypercholesterolemia. For that, two groups of hamsters were fed with a hypercholesterolemic diet supplemented with 0.5% linoleic acid or with the trans-10,cis-12 CLA isomer, respectively. Daily food intake and weight were determined and, 6 weeks later, serum and bile samples were obtained, and livers and spleens were dissected and weighted. Cholesterolemia, hepatic and splenic cholesterol content, and biliary cholesterol phosnolipid and bileacid concentrations were determined; Biliary Lithogenic Index was calculated, and presence of gallstones was assessed. CLA did not modify energetic intake or final body weight, spleen size or spleen cholesterol content, but it did significantly reduce total serum cholesterol (-18%) at the expense of c-LDL (-66%), and it also significantly reduced hepatic content of free cholesterol (-26%), without changes in esterified cholesterol. Besides, CLA produced a 32% increase in biliary cholesterol concentration, a 28% increase in Lithogenic Index, and a higher incidence of biliary lithiasis. Therefore, the present study shows that the CLA trans-10,cis-12 isomer is hypercholesterolemic since it increases, at least in part, cholesterol secretion to the bile. As a consequence, this effect increases the risk for biliary lithiasis.


Asunto(s)
Cálculos Biliares/inducido químicamente , Hipercolesterolemia/tratamiento farmacológico , Ácidos Linoleicos Conjugados/uso terapéutico , Animales , Cricetinae , Ácidos Linoleicos Conjugados/efectos adversos , Masculino , Factores de Riesgo
16.
Planta Med ; 71(2): 126-9, 2005 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-15729619

RESUMEN

A mixture of fatty acids obtained from sugar cane wax oil, the main components of which are palmitic, oleic, linoleic and linolenic acids, was evaluated topically in two experimental models of hypersensitivity: the ear swelling response to ovalbumin in sensitized mice (ED50 edema: 0.63 +/- 0.06 mg/ear, ED50 myeloperoxidase: 0.56 +/- 0.04 mg/ear, ED50 degranulated cells: 0.70 +/- 0,08 mg/ear) and oxazolone-induced contact hypersensitivity in mice (ED50 edema: 1.63 +/- 0.26 mg/ear, ED50 myeloperoxidase: 1.50 +/- 0.28 mg/ear, ED50 degranulated cells: 1.69 +/- 0.08 mg/ear). Also, the effect of this mixture was studied on the chemotaxis induced by fmlp (ED50: 25 +/- 3 microg/mL). The mixture showed anti-inflammatory activity in both in vivo models of allergy and in the chemotaxis test. Therefore, these results provide evidence about the potential usefulness of the mixture of fatty acids from sugar cane wax oil in cutaneous inflammatory and allergic disorders.


Asunto(s)
Antiinflamatorios no Esteroideos/farmacología , Hipersensibilidad Inmediata/prevención & control , Fitoterapia , Aceites de Plantas/farmacología , Saccharum , Animales , Antiinflamatorios no Esteroideos/administración & dosificación , Antiinflamatorios no Esteroideos/uso terapéutico , Relación Dosis-Respuesta a Droga , Edema/inducido químicamente , Edema/prevención & control , Femenino , Hipersensibilidad Inmediata/inducido químicamente , Ratones , Ratones Endogámicos BALB C , Ovalbúmina , Oxazolona , Aceites de Plantas/administración & dosificación , Aceites de Plantas/uso terapéutico
17.
Nutr Neurosci ; 6(2): 103-11, 2003 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-12722985

RESUMEN

The aim of the present work was to describe the effects of sibutramine on body weight and adiposity and to establish the potential involvement of neuropeptide Y (NPY) and orexins in the anorectic action of this drug. Male obese Zucker rats were daily administered with sibutramine (10 mg/kg, intraperitoneal) for two weeks. Carcass composition was assessed using the official methods of the Association of Official Analytical Chemists. Total body oxygen consumption was measured daily for 60 min before sibutramine or saline injection and for 30 min (from 60 to 90 min) after drug or saline injection. Hypothalamic arcuate and paraventricular nuclei, and the lateral hypothalamic area were immunostained for NPY, orexin A and orexin B. Commercial kits were used for serum determinations. Reductions in body weight and adipose tissue weights were observed after sibutramine treatment in obese Zucker rats. No changes in NPY immunostaining in the arcuate and paraventricular nuclei were found. Orexin A and orexin B immunostaining was not modified in the lateral hypothalamic area in treated rats. The reduction in body weight and adiposity induced by sibutramine was achieved by both a reduction in food intake and an increase in energy expenditure. NPY and orexins do not seem to be involved in the anorectic effect of sibutramine.


Asunto(s)
Depresores del Apetito/farmacología , Ciclobutanos/farmacología , Metabolismo Energético/efectos de los fármacos , Péptidos y Proteínas de Señalización Intracelular , Obesidad/fisiopatología , Aumento de Peso/efectos de los fármacos , Tejido Adiposo/anatomía & histología , Animales , Depresores del Apetito/uso terapéutico , Composición Corporal/efectos de los fármacos , Proteínas Portadoras/análisis , Ciclobutanos/uso terapéutico , Ingestión de Líquidos/efectos de los fármacos , Ingestión de Alimentos/efectos de los fármacos , Hipotálamo/química , Masculino , Neuropéptido Y/análisis , Neuropéptidos/análisis , Orexinas , Tamaño de los Órganos/efectos de los fármacos , Consumo de Oxígeno/efectos de los fármacos , Ratas , Ratas Zucker
18.
Planta Med ; 69(4): 367-9, 2003 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-12709906

RESUMEN

The anti-inflammatory and analgesic effects of FAM, a defined mixture of fatty acids isolated from sugar cane (Saccharum officinarum L.), was evaluated. Oral administration of this mixture showed anti-inflammatory activity in the cotton pellet granuloma assay and in the carrageenin-induced pleurisy test, both in rats, as well as in the peritoneal capillary permeability test in mice. In addition, FAM showed analgesic properties in the hot-plate model and in the acetic acid-induced writhings test, both in mice. In conclusion, these results provide evidence on the potential usefulness of the mixture of fatty acids from sugar cane wax oil in inflammatory disorders.


Asunto(s)
Analgésicos/farmacología , Antiinflamatorios no Esteroideos/farmacología , Ácidos Grasos/farmacología , Dolor/prevención & control , Fitoterapia , Extractos Vegetales/farmacología , Pleuresia/prevención & control , Saccharum , Ácido Acético , Administración Oral , Analgésicos/administración & dosificación , Analgésicos/uso terapéutico , Animales , Antiinflamatorios no Esteroideos/administración & dosificación , Antiinflamatorios no Esteroideos/uso terapéutico , Permeabilidad Capilar/efectos de los fármacos , Carragenina , Ácidos Grasos/administración & dosificación , Ácidos Grasos/uso terapéutico , Granuloma de Cuerpo Extraño/prevención & control , Calor , Masculino , Ratones , Ratones Endogámicos , Dolor/inducido químicamente , Dimensión del Dolor/efectos de los fármacos , Extractos Vegetales/administración & dosificación , Extractos Vegetales/uso terapéutico , Pleuresia/inducido químicamente , Ratas , Ratas Sprague-Dawley
19.
Inf. psiquiátr ; (173): 299-303, 2003.
Artículo en Es | IBECS | ID: ibc-28731

RESUMEN

La enfermedad de Creutzfeldt-Jakob pertenece al grupo de las encefalopatías espongiformes de los seres humanos. Es una enfermedad rara con una incidencia de 1 a 2 casos por millón de habitantes y año. Aparece en la edad adulta. El cuadro clínico se caracteriza por demencia rápidamente progresiva, ataxia y mioclonías. No tiene tratamiento y la muerte se produce en la mayoría de los casos en menos de un año. Presentamos un caso de probable encefalopatía espongiforme (enfermedad de Creutzfeldt-Jakob esporádica) de inicio atípico con síntomas psiquiátricos (más característico de la nueva variante). En cualquier caso, no fue posible realizar la necropsia ante la negativa de la familia (AU)


Asunto(s)
Anciano , Femenino , Humanos , Síndrome de Creutzfeldt-Jakob/diagnóstico , Síntomas Psíquicos , Síndrome de Creutzfeldt-Jakob/tratamiento farmacológico , Síndrome de Creutzfeldt-Jakob/psicología , Diagnóstico Clínico , Manifestaciones Neuroconductuales , Trastornos Neurológicos de la Marcha/etiología , Trastornos de la Memoria/etiología , Ansiedad/etiología , Depresión/etiología , Clonazepam/uso terapéutico , Mareo/etiología
20.
Rev. esp. nutr. comunitaria ; 7(3/4): 61-68, jul. 2001. tab
Artículo en Es | IBECS | ID: ibc-26969

RESUMEN

Habiendo analizado en estudiantes de nutrición (1998) el consumo de edulcorantes no nutritivos (ENN), productos que lo contengan y el uso de los mismos por la Industria, se continúa con la línea de investigación, analizando otras "poblaciones riesgo" (PR).Objetivos: Determinar en el término de un año (98/99) la variación en la Industria de productos dietéticos (PD) con ENN. Establecer su manejo y prevalencia de consumo en PR y porcentaje de adecuación en relación a la ingesta diaria admisible (IDA) para cada uno. Metodología: Se estudió como ENN la Sacarina (S), Ciclamato©, Acesulfame K (Ac), Aspartamo (A) y Sucralosa (Su). Población n=290 sexo femenino. Se consideró PR a la expuesta al mayor consumo de PD y ENN, ya sea por situación fisiopatológica presente, período biológico o influencias de medios de comunicación. Se establecieron 3 grupos: adolescentes n=80; adultas en edad fértil n=120 y perimenopáusicas n=90.Resultados: El uso por la Industria de PD y ENN aumentó en un año un 49,1 por ciento incorporándose la Su y aumentando la utilización de Ac:100,0 por ciento, A:28,6 por ciento, C: 25,7 por ciento y S:12,5 por ciento. El rubro de PD que más creció fue el de yogures (157,1 por ciento).Con respecto al manejo de PD y ENN, en las 3 poblaciones estudiadas, la mayoría "se cuida" o no realiza ninguna alimentación especial; utilizan como criterio para seleccionar a los PD el sabor de los mismos; leen el rotulado nutricional, principalmente el aporte calórico y los ENN son seleccionados también por el sabor. Los PD más consumidos son chicles, mermeladas, jugos, gelatinas, gaseosas, yogures, edulcorantes, frutas enlatadas, flanes y postres de leche y alfajores. No hubo variaciones en las marcas consumidas con el estudio anterior. Con respecto al porcentaje de adecuación para la IDA, la mayoría (90 por ciento) se encuentra por debajo del 25 por ciento de adecuación para S, C, A y Ac. Ninguno supera el 100 por ciento de adecuación. No se pudo determinar la adecuación para la Su, por no declarar el rotulado la cantidad contenida en los productos. Conclusiones: Pese a la mayor disponibilidad y aumento del uso por la industria de PD con ENN, se observa en el consumo que el porcentaje de adecuación para la IDA de cada uno de ellos, es menor al 25 por ciento (AU)


Asunto(s)
Adolescente , Adulto , Persona de Mediana Edad , Humanos , Suplementos Dietéticos , 24457 , Edulcorantes , Prevalencia , Grupos de Riesgo , Reproducibilidad de los Resultados , Edulcorantes/clasificación
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