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1.
Benef Microbes ; 14(6): 565-590, 2023 Dec 12.
Artículo en Inglés | MEDLINE | ID: mdl-38350483

RESUMEN

The gut microbiome is known to play an important role in the day-to-day physiology and health of the human host. It is, therefore, not surprising that there is interest surrounding the gut microbiome and its potential to benefit athletic health and performance. This has, in part, been driven by the consideration that gut bacterial by-products (i.e. metabolic waste) could be harnessed by the host and utilised for a beneficial outcome. The concept of harnessing bacterial metabolites as beneficial health modulators has developed the theory of leveraging short-chain fatty acids (SCFAs) as novel supplements for enhancing athletic performance. This review discusses the current literature investigating SCFA administration in cellular, animal, and human models, with the aim of linking the demonstrated physiological/biochemical mechanisms to potential exercise/athletic benefit. In addition, practical implications and factors relating to SCFA-supplementation in athletic populations are considered. The literature demonstrates a tangible rationale that SCFAs can have a positive impact on human physiology to afford benefits to the athletic population. These advantages include the capacity to improve respiratory immunity to combat elevated levels/severity of upper respiratory tract infections often reported in athletes; the blunting of pro-inflammatory and pro-fibrotic pathways to aid in exercise recovery; and the role of SCFAs as usable energy sources and metabolism modulators to fuel exercise and improve performance and/or endurance capacity. However, there is currently minimal research completed in human participants and thus further investigations into the direct benefit of SCFAs in exercise performance and/or recovery-based studies are required.


Asunto(s)
Probióticos , Deportes , Animales , Humanos , Probióticos/farmacología , Ácidos Grasos Volátiles , Ejercicio Físico , Suplementos Dietéticos
2.
J Cosmet Laser Ther ; 22(2): 60-64, 2020 Feb 17.
Artículo en Inglés | MEDLINE | ID: mdl-32041440

RESUMEN

Treating diffuse facial redness with an intense pulsed light (IPL) source usually requires multiple sessions and may not achieve complete clearance. The 595 nm pulsed dye laser (PDL) enjoys a good reputation for reducing facial redness with non-purpuric settings. The objective of this study was to compare facial redness reduction using these two devices. After establishing the lowest light dose able to achieve transient purpura for the same pulse width of 1,5 ms with each technology, right and left sides of the face were randomly assigned for each type of treatment. There were two treatment sessions 4 weeks apart and the final evaluation was performed 8 weeks after thesecond treatment. Four blinded experienced dermatologists analyzed pre and post-treatment photographs, which demonstrated an average of 60% improvement on the segment treated with the IPL as opposed to 45% on the other segment. Pain level was described as mild and the procedure was well tolerated for both types of treatment. In this study we showed that short-pulsed intense pulsed light and PDL are similar in decreasing facial redness when non-purpuric low fluence settings are used. The IPL was faster and did not have consumables.


Asunto(s)
Cara/efectos de la radiación , Tratamiento de Luz Pulsada Intensa/métodos , Láseres de Colorantes/uso terapéutico , Terapia por Luz de Baja Intensidad/métodos , Rosácea/radioterapia , Técnicas Cosméticas/efectos adversos , Técnicas Cosméticas/instrumentación , Femenino , Humanos , Tratamiento de Luz Pulsada Intensa/efectos adversos , Láseres de Colorantes/efectos adversos , Terapia por Luz de Baja Intensidad/efectos adversos , Masculino , Persona de Mediana Edad , Dolor/etiología
3.
Clin Exp Dermatol ; 42(2): 185-188, 2017 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-27910127

RESUMEN

Treatment of severe hand eczema (HE) that is resistant to topical potent corticosteroid treatment is challenging. In 2013, we surveyed 194 UK dermatologists to obtain information about their usual treatment pathways to inform the choice of the comparator in a trial of alitretinoin in severe HE (ALPHA trial); the results indicated that the treatment approaches favoured by UK dermatologists differ. Psoralen combined with ultraviolet A (PUVA) and alitretinoin were identified as the most frequent first-line treatment options for hyperkeratotic HE, whereas oral corticosteroids were identified as the most frequent first-line treatment for vesicular HE, followed by PUVA and alitretinoin. In terms of potential adverse effects of long-term or repeated use, oral steroids and ciclosporin A were reported to cause most concern. There is uncertainty about which treatment gives the best short and long-term outcomes, because of a lack of definitive randomised controlled trials evaluating the effectiveness of different treatment pathways in severe HE.


Asunto(s)
Dermatólogos , Eccema/tratamiento farmacológico , Dermatosis de la Mano/tratamiento farmacológico , Queratolíticos/uso terapéutico , Terapia PUVA/estadística & datos numéricos , Pautas de la Práctica en Medicina , Tretinoina/uso terapéutico , Administración Oral , Corticoesteroides/uso terapéutico , Alitretinoína , Enfermedad Crónica , Encuestas de Atención de la Salud , Humanos , Reino Unido
4.
Sci Rep ; 6: 24542, 2016 Apr 18.
Artículo en Inglés | MEDLINE | ID: mdl-27086504

RESUMEN

Recent research suggests that frequently switching between various forms of media (i.e. 'media multitasking') is associated with diminished attentional abilities, a disconcerting result given the prevalence of media multitasking in today's society. In the present study, we sought to investigate the extent to which the deficits associated with frequent media multitasking can be temporarily ameliorated via a short-term mindfulness intervention previously shown to produce beneficial effects on the attentional abilities of normally functioning individuals. Consistent with previous work, we found: (1) that heavy media multitaskers showed generally poorer attentional abilities than light media multitaskers and (2) that all participants showed benefits from the short-term mindfulness intervention. Furthermore, we found that the benefits of the short-term mindfulness intervention were not equivalently large across participants. Instead, these benefits were disproportionately large in the heavy media multitaskers. While the positive outcomes were short-lived, this opens the possibility of performing long-term interventions with the goal of realizing lasting gains in this population.


Asunto(s)
Atención , Internet , Atención Plena/métodos , Adolescente , Cognición , Femenino , Humanos , Masculino , Adulto Joven
5.
Cyberpsychol Behav Soc Netw ; 18(8): 480-5, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-26252934

RESUMEN

Research indicates that a small subset of those who routinely play video games show signs of pathological habits, with side effects ranging from mild (e.g., being late) to quite severe (e.g., losing a job). However, it is still not clear whether individual types, or genres, of games are most strongly associated with Internet gaming disorder (IGD). A sample of 4,744 University of Wisconsin-Madison undergraduates (Mage=18.9 years; SD=1.9 years; 60.5% female) completed questionnaires on general video game playing habits and on symptoms of IGD. Consistent with previous reports: 5.9-10.8% (depending on classification criteria) of individuals who played video games show signs of pathological play. Furthermore, real-time strategy and role-playing video games were more strongly associated with pathological play, compared with action and other games (e.g., phone games). The current investigation adds support to the idea that not all video games are equal. Instead, certain genres of video games, specifically real-time strategy and role-playing/fantasy games, are disproportionately associated with IGD symptoms.


Asunto(s)
Conducta Adictiva/etiología , Internet , Trastornos Mentales/etiología , Juegos de Video/efectos adversos , Adolescente , Femenino , Humanos , Masculino , Probabilidad , Recreación , Desempeño de Papel , Estudiantes , Encuestas y Cuestionarios , Universidades , Juegos de Video/psicología , Juegos de Video/estadística & datos numéricos , Adulto Joven
6.
J Perinatol ; 32(9): 677-84, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22652561

RESUMEN

OBJECTIVE: Aggressive phototherapy (AgPT) is widely used and assumed to be safe and effective for even the most immature infants. We assessed whether the benefits and hazards for the smallest and sickest infants differed from those for other extremely low-birth-weight (ELBW; ≤ 1000 g) infants in our Neonatal Research Network trial, the only large trial of AgPT. STUDY DESIGN: ELBW infants (n=1974) were randomized to AgPT or conservative phototherapy at age 12 to 36 h. The effect of AgPT on outcomes (death, impairment, profound impairment, death or impairment (primary outcome), and death or profound impairment) at 18 to 22 months of corrected age was related to BW stratum (501 to 750 g; 751 to 1000 g) and baseline severity of illness using multilevel regression equations. The probability of benefit and of harm was directly assessed with Bayesian analyses. RESULT: Baseline illness severity was well characterized using mechanical ventilation and FiO(2) at 24 h age. Among mechanically ventilated infants ≤ 750 g BW (n=684), a reduction in impairment and in profound impairment was offset by higher mortality (P for interaction <0.05) with no significant effect on composite outcomes. Conservative Bayesian analyses of this subgroup identified a 99% (posterior) probability that AgPT increased mortality, a 97% probability that AgPT reduced impairment, and a 99% probability that AgPT reduced profound impairment. CONCLUSION: Findings from the only large trial of AgPT suggest that AgPT may increase mortality while reducing impairment and profound impairment among the smallest and sickest infants. New approaches to reduce their serum bilirubin need development and rigorous testing.


Asunto(s)
Hiperbilirrubinemia Neonatal/terapia , Recien Nacido con Peso al Nacer Extremadamente Bajo , Enfermedades del Prematuro/terapia , Fototerapia/efectos adversos , Fototerapia/mortalidad , Humanos , Recién Nacido , Recien Nacido Prematuro , Fototerapia/métodos , Respiración Artificial , Índice de Severidad de la Enfermedad
7.
Health Technol Assess ; 15(44): i-xii, 1-254, 2011 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-22182828

RESUMEN

BACKGROUND: Exercise referral schemes (ERS) aim to identify inactive adults in the primary-care setting. The GP or health-care professional then refers the patient to a third-party service, with this service taking responsibility for prescribing and monitoring an exercise programme tailored to the needs of the individual. OBJECTIVE: To assess the clinical effectiveness and cost-effectiveness of ERS for people with a diagnosed medical condition known to benefit from physical activity (PA). The scope of this report was broadened to consider individuals without a diagnosed condition who are sedentary. DATA SOURCES: MEDLINE; EMBASE; PsycINFO; The Cochrane Library, ISI Web of Science; SPORTDiscus and ongoing trial registries were searched (from 1990 to October 2009) and included study references were checked. METHODS: Systematic reviews: the effectiveness of ERS, predictors of ERS uptake and adherence, and the cost-effectiveness of ERS; and the development of a decision-analytic economic model to assess cost-effectiveness of ERS. RESULTS: Seven randomised controlled trials (UK, n = 5; non-UK, n = 2) met the effectiveness inclusion criteria, five comparing ERS with usual care, two compared ERS with an alternative PA intervention, and one to an ERS plus a self-determination theory (SDT) intervention. In intention-to-treat analysis, compared with usual care, there was weak evidence of an increase in the number of ERS participants who achieved a self-reported 90-150 minutes of at least moderate-intensity PA per week at 6-12 months' follow-up [pooled relative risk (RR) 1.11, 95% confidence interval 0.99 to 1.25]. There was no consistent evidence of a difference between ERS and usual care in the duration of moderate/vigorous intensity and total PA or other outcomes, for example physical fitness, serum lipids, health-related quality of life (HRQoL). There was no between-group difference in outcomes between ERS and alternative PA interventions or ERS plus a SDT intervention. None of the included trials separately reported outcomes in individuals with medical diagnoses. Fourteen observational studies and five randomised controlled trials provided a numerical assessment of ERS uptake and adherence (UK, n = 16; non-UK, n = 3). Women and older people were more likely to take up ERS but women, when compared with men, were less likely to adhere. The four previous economic evaluations identified suggest ERS to be a cost-effective intervention. Indicative incremental cost per quality-adjusted life-year (QALY) estimates for ERS for various scenarios were based on a de novo model-based economic evaluation. Compared with usual care, the mean incremental cost for ERS was £169 and the mean incremental QALY was 0.008, with the base-case incremental cost-effectiveness ratio at £20,876 per QALY in sedentary people without a medical condition and a cost per QALY of £14,618 in sedentary obese individuals, £12,834 in sedentary hypertensive patients, and £8414 for sedentary individuals with depression. Estimates of cost-effectiveness were highly sensitive to plausible variations in the RR for change in PA and cost of ERS. LIMITATIONS: We found very limited evidence of the effectiveness of ERS. The estimates of the cost-effectiveness of ERS are based on a simple analytical framework. The economic evaluation reports small differences in costs and effects, and findings highlight the wide range of uncertainty associated with the estimates of effectiveness and the impact of effectiveness on HRQoL. No data were identified as part of the effectiveness review to allow for adjustment of the effect of ERS in different populations. CONCLUSIONS: There remains considerable uncertainty as to the effectiveness of ERS for increasing activity, fitness or health indicators or whether they are an efficient use of resources in sedentary people without a medical diagnosis. We failed to identify any trial-based evidence of the effectiveness of ERS in those with a medical diagnosis. Future work should include randomised controlled trials assessing the cinical effectiveness and cost-effectivenesss of ERS in disease groups that may benefit from PA. FUNDING: The National Institute for Health Research Health Technology Assessment programme.


Asunto(s)
Terapia por Ejercicio/economía , Cooperación del Paciente , Medicina Preventiva/métodos , Atención Primaria de Salud/métodos , Conducta Sedentaria , Adulto , Análisis Costo-Beneficio , Toma de Decisiones , Terapia por Ejercicio/normas , Femenino , Guías como Asunto , Humanos , Masculino , Actividad Motora/fisiología , Años de Vida Ajustados por Calidad de Vida , Ensayos Clínicos Controlados Aleatorios como Asunto , Derivación y Consulta/economía , Reino Unido
8.
BMJ ; 343: d6462, 2011 Nov 04.
Artículo en Inglés | MEDLINE | ID: mdl-22058134

RESUMEN

OBJECTIVE: To assess the impact of exercise referral schemes on physical activity and health outcomes. Design Systematic review and meta-analysis. DATA SOURCES: Medline, Embase, PsycINFO, Cochrane Library, ISI Web of Science, SPORTDiscus, and ongoing trial registries up to October 2009. We also checked study references. Study selection Design: randomised controlled trials or non-randomised controlled (cluster or individual) studies published in peer review journals. POPULATION: sedentary individuals with or without medical diagnosis. Exercise referral schemes defined as: clear referrals by primary care professionals to third party service providers to increase physical activity or exercise, physical activity or exercise programmes tailored to individuals, and initial assessment and monitoring throughout programmes. Comparators: usual care, no intervention, or alternative exercise referral schemes. RESULTS: Eight randomised controlled trials met the inclusion criteria, comparing exercise referral schemes with usual care (six trials), alternative physical activity intervention (two), and an exercise referral scheme plus a self determination theory intervention (one). Compared with usual care, follow-up data for exercise referral schemes showed an increased number of participants who achieved 90-150 minutes of physical activity of at least moderate intensity per week (pooled relative risk 1.16, 95% confidence intervals 1.03 to 1.30) and a reduced level of depression (pooled standardised mean difference -0.82, -1.28 to -0.35). Evidence of a between group difference in physical activity of moderate or vigorous intensity or in other health outcomes was inconsistent at follow-up. We did not find any difference in outcomes between exercise referral schemes and the other two comparator groups. None of the included trials separately reported outcomes in individuals with specific medical diagnoses. Substantial heterogeneity in the quality and nature of the exercise referral schemes across studies might have contributed to the inconsistency in outcome findings. Conclusions Considerable uncertainty remains as to the effectiveness of exercise referral schemes for increasing physical activity, fitness, or health indicators, or whether they are an efficient use of resources for sedentary people with or without a medical diagnosis.


Asunto(s)
Ejercicio Físico , Atención Primaria de Salud , Derivación y Consulta , Análisis Costo-Beneficio , Ejercicio Físico/fisiología , Ejercicio Físico/psicología , Indicadores de Salud , Humanos , Actividad Motora , Aptitud Física , Atención Primaria de Salud/economía , Calidad de Vida , Derivación y Consulta/economía
9.
Fish Physiol Biochem ; 35(3): 377-84, 2009 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-18777198

RESUMEN

A number of aquaculture species, including channel catfish Ictalurus punctatus, are fed high proportions of soybean meal in their diet. We have investigated the potential for the most common phytoestrogen in soybean meal to alter phenotypic sex during sexual differentiation in channel catfish. Channel catfish were fed four dietary concentrations of the phytoestrogen genistein (0, 2, 4, and 8 mg g(-1)) to determine its effect on gonadal sex differentiation. The four treatment diets were fed to sexually undifferentiated channel catfish between 5 and 140 days post hatch (dph) and between 60 and 150 dph. Phenotypic sex was determined by histological examination of the gonads. Ethoxyresorufin-O-deethylase activity was not significantly different among the treatment and control groups. Phenotypic sex was significantly dependant on dietary phytoestrogen concentration (P = 0.01). Additionally, logistic regression showed a significant relation between genistein concentration in the diet and gonadal sex (P = 0.02). Intersex individuals were present at all treatment concentrations, with increasing proportions of intersex fish as the genistein concentration increased for individuals fed treated diets between 5 and 140 dph. Increased proportions of phenotypically male individuals resulted from chronic dietary exposure to the estrogen mimic genistein. There were no significant differences in the proportions of males and females between feed treatment durations. These findings establish that dietary concentrations of genistein can alter sex ratios in cultured channel catfish populations and demonstrates the need to further understand the actions of this and other prominent phytoestrogens in aquaculture species.


Asunto(s)
Citocromo P-450 CYP1A1/metabolismo , Genisteína/farmacología , Ictaluridae/metabolismo , Fitoestrógenos/farmacología , Diferenciación Sexual/efectos de los fármacos , Análisis de Varianza , Animales , Acuicultura , Servicios Dietéticos , Suplementos Dietéticos , Modelos Logísticos , Microsomas Hepáticos/enzimología
10.
J Anim Sci ; 86(1): 197-204, 2008 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-17878272

RESUMEN

The objective of the study was to determine if there were adverse effects on animal health and performance when a range of ruminant animal species were fed at least 10 times the maximum permitted European Union (EU) Se dietary inclusion rate (0.568 mg of Se/kg of DM) in the form of Se-enriched yeast (SY) derived from a specific strain of Saccharomyces cerevisiae, CNCM I-3060. In a series of studies, dairy cows, beef cattle, calves, and lambs were offered a control diet that contained no Se supplement or a treatment diet that contained the same basal feed ingredients plus a SY supplement that increased total dietary Se from 0.15 to 6.25, 0.20 to 6.74, 0.15 to 5.86, and 0.14 to 6.63 mg of Se/kg of DM, respectively. The inclusion of the SY supplement increased (P < 0.001) whole-blood Se concentrations, reaching maximum mean values of 716, 1,505, 1,377, and 724 ng of Se/mL for dairy cattle, beef cattle, calves, and lambs, respectively. Seleno-methionine accounted for 10% of total whole-blood Se in control animals, whereas the proportion in SY animals ranged between 40 and 75%. Glutathione peroxidase (EC 1.11.1.9) activity was greater (P < 0.05) in SY animals compared with controls. A range of other biochemical and hematological parameters were assessed, but few differences of biological significance were established between treatment groups. There were no differences between treatment groups within each species with regard to animal physical performance or overall animal health. It was concluded that there were no adverse effects on animal health, performance, and voluntary feed intake with the administration of at least 10 times the EU maximum, or approximately 20 times the US Food and Drug Administration permitted concentration of dietary Se in the form of SY derived from a specific strain of Saccharomyces cerevisiae CNCM I-3060.


Asunto(s)
Alimentación Animal/efectos adversos , Bovinos/crecimiento & desarrollo , Bovinos/metabolismo , Saccharomyces cerevisiae/metabolismo , Selenio/efectos adversos , Ovinos/crecimiento & desarrollo , Ovinos/metabolismo , Alimentación Animal/análisis , Fenómenos Fisiológicos Nutricionales de los Animales , Animales , Bovinos/sangre , Dieta/veterinaria , Relación Dosis-Respuesta a Droga , Lactancia/efectos de los fármacos , Saccharomyces cerevisiae/química , Selenio/sangre , Selenio/química , Ovinos/sangre , Aumento de Peso/efectos de los fármacos
11.
Scand J Med Sci Sports ; 17(3): 205-10, 2007 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-17501865

RESUMEN

AIMS: To investigate the type and severity of injury sustained during judo competitions, and to investigate any possible correlation between injury rate and gender, grade, weight category and rapid weight loss. METHOD: Three hundred and ninety-two judokas (284 males, 108 females) competed in three consecutive competitions. A judoka was "injured" if they requested medical treatment or could not continue. Following injury, a questionnaire was completed. Uninjured judokas were asked to complete a questionnaire at one competition to assess risk factors of injury. Follow-up was conducted 6 weeks after each competition. RESULTS: Fifty-three out of 392 judokas (13.5%) (40 males, 13 females) sustained an injury. No difference was found between injury rates among males (41.3/1000 anthlete-exposures (A-E's)) and females (40.9/1000 A-E's), or between judokas of different weight groups or grades. Rapid weight loss of 5% or more of a judoka's body weight placed the athlete at a higher risk of injury (P=0.022). Most injuries affected the upper extremities. Injuries most often resulted from grip fighting, being thrown, or attempting to throw. CONCLUSIONS: Judokas are advised not to lose weight before a competition as this increases the risk of injury. Neither grade, nor gender, or weight category are associated with an increase in injury rate.


Asunto(s)
Conducta Competitiva , Artes Marciales/lesiones , Femenino , Humanos , Masculino , Encuestas y Cuestionarios , Reino Unido
12.
J Clin Pharm Ther ; 31(4): 335-41, 2006 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-16882102

RESUMEN

BACKGROUND: About 6.5% of admissions to hospital are related to an adverse drug reaction (ADR). There are no recent large studies, which explore the burden of ADRs on hospital in-patients. The aim of this pilot study was to assess the feasibility of, and establish the methodology for, conducting a large prospective study to fully assess the impact of ADRs on in-patients and the National Health Service (NHS). METHODS: Patients admitted to five wards in a university hospital over a 2-week period were assessed for ADRs through a daily ward visit by a pharmacist. Suspected ADRs were analysed for causality, severity and avoidability using appropriate scales. RESULTS: Twenty-four of 125 patients (19.2%, 95% CI 12-26%) were categorized as having suffered one or more ADRs. A total of 27 ADRs were identified. Patients with ADRs spent longer in hospital than those without ADRs. Causality assessment showed that 17 (63%) ADRs were possibly drug-related, whereas 10 (37%) were classified as probably or definitely related to the drug. Almost two-thirds of reactions were potentially avoidable. Intervention was required in all ADRs and reactions indirectly contributed to the death of two patients. CONCLUSIONS: Almost one-fifth of patients suffered an ADR as an inpatient. Methodology tested using this pilot will enable the design of a larger study, involving over 3000 patients, which will allow the ADR burden and vulnerable patient groups, to be more accurately characterized. This study will aid the development of interventions to reduce the impact of ADRs in hospital in-patients.


Asunto(s)
Sistemas de Registro de Reacción Adversa a Medicamentos/estadística & datos numéricos , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos , Mortalidad Hospitalaria , Hospitalización , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Programas Nacionales de Salud/estadística & datos numéricos , Proyectos Piloto , Índice de Severidad de la Enfermedad , Reino Unido/epidemiología
13.
Kidney Int ; 69(2): 239-47, 2006 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-16408112

RESUMEN

Low concentrations of carbon monoxide (CO) can protect tissues against ischemia-reperfusion (I-R) injury. We have recently identified a novel class of compounds, CO-releasing molecules (CO-RMs), which exert important pharmacological activities by carrying and delivering CO to biological systems. Here, we examined the possible beneficial effects of CO liberated from CO-RMs on the damage inflicted by cold storage and I-R in isolated perfused kidneys. Hemodynamic and biochemical parameters as well as mitochondrial respiration were measured in isolated perfused rabbit kidneys that were previously flushed with CO-RMs and stored at 4 degrees C for 24 h. Two water-soluble CO-RMs were tested: (1) sodium boranocarbonate (CORM-A1), a boron-containing carbonate that releases CO at a slow rate, and (2) tricarbonylchloro(glycinato)ruthenium(II) (CORM-3), a transition metal carbonyl that liberates CO very rapidly in solution. Kidneys flushed with Celsior solution supplemented with CO-RMs (50 microM) and stored at 4 degrees C for 24 h displayed at reperfusion a significantly higher perfusion flow rate (PFR), glomerular filtration rate, and sodium and glucose reabsorption rates compared to control kidneys flushed with Celsior solution alone. Addition of 1H-[1,2,4]oxadiazolo[4,3-alpha]quinoxalin-1-one (ODQ), a guanylate cyclase inhibitor, prevented the increase in PFR mediated by CO-RMs. The respiratory control index from kidney mitochondria treated with CO-RMs was also markedly increased. Notably, renal protection was lost when kidneys were flushed with Celsior containing an inactive compound (iCO-RM), which had been deliberately depleted of CO. CO-RMs are effective therapeutic agents that deliver CO during kidney cold preservation and can be used to ameliorate vascular activity, energy metabolism and renal function at reperfusion.


Asunto(s)
Monóxido de Carbono/farmacología , Riñón/efectos de los fármacos , Preservación de Órganos , Daño por Reperfusión/prevención & control , Animales , Monóxido de Carbono/metabolismo , Frío , Riñón/irrigación sanguínea , Riñón/fisiología , Masculino , Mitocondrias/efectos de los fármacos , Mitocondrias/metabolismo , Oxadiazoles/farmacología , Consumo de Oxígeno/efectos de los fármacos , Quinoxalinas/farmacología , Conejos
14.
Dermatology ; 204(3): 214-21, 2002.
Artículo en Inglés | MEDLINE | ID: mdl-12037450

RESUMEN

BACKGROUND: In the vast majority of psoriatic patients, psoriatic lesions are localised on the body as well as on the scalp. Therefore, safety data on the combined use of calcipotriol in lotion and calcipotriol in ointment are needed. OBJECTIVE: This study investigated the effect of high-dose treatment with a combination of calcipotriol ointment and scalp solution on calcium metabolism, indices of bone turnover and PASI in patients with extensive psoriasis. METHODS: Following a 2-week wash-out period, 88 patients were randomised to 4 weeks of treatment with either calcipotriol ointment/scalp solution (80-100 g/week and 30-50 ml/week, respectively; n = 41) or with a dithranol/tar regimen (n = 47). Patients were seen at weeks 1, 2 and 4 during treatment and 1 week following cessation of treatment. RESULTS: No significant differences at the end of treatment were found between the 2 groups with respect to 24-hour urinary excretion of calcium (expressed as calcium/creatinine ratio), phosphate or pyridinoline, serum concentrations of calcium (albumin corrected), creatinine, phosphate, parathyroid hormone, 25-hydroxyvitamin D(3), 1,25-dihydroxyvitamin D(3), osteocalcin, alkaline phosphatase (total and bone-specific iso-enzymes) or 1-collagen telopeptide. At the end of treatment, the psoriasis area and severity index had decreased by 57.4% in the calcipotriol group and by 36.1% in the dithranol/tar group (p = 0.004). Investigators' and patients' assessments of overall efficacy also favoured treatment with calcipotriol (p < 0.001). CONCLUSION: The combined use of calcipotriol ointment/scalp solution did not affect the indices of calcium metabolism or bone turnover and was significantly more effective than dithranol/tar in reducing disease severity and extent in patients with extensive psoriasis.


Asunto(s)
Antralina/administración & dosificación , Calcitriol/análogos & derivados , Calcitriol/administración & dosificación , Psoriasis/tratamiento farmacológico , Administración Tópica , Adulto , Anciano , Análisis de Varianza , Relación Dosis-Respuesta a Droga , Quimioterapia Combinada , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Pomadas , Probabilidad , Psoriasis/diagnóstico , Índice de Severidad de la Enfermedad , Soluciones , Resultado del Tratamiento
15.
Mol Pharmacol ; 61(3): 554-61, 2002 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-11854435

RESUMEN

Heme oxygenase-1 (HO-1) is a redox-sensitive inducible protein that provides efficient cytoprotection against oxidative stress. Curcumin, a polyphenolic natural compound that possesses anti-tumor and anti-inflammatory properties, has been reported recently to induce potently HO-1 expression in vascular endothelial cells (Free Rad Biol Med 28:1303-1312, 2000). Here, we extend our previous findings by showing that caffeic acid phenethyl ester (CAPE), another plant-derived phenolic agent, markedly increases heme oxygenase activity and HO-1 protein in astrocytes. The effect seems to be related to the peculiar chemical structures of curcumin and CAPE, because analogous antioxidants containing only portions of these two molecules were totally ineffective. At a final concentration of 30 microM, both curcumin and CAPE maximally up-regulated heme oxygenase activity while promoting marked cytotoxicity at higher concentrations (50-100 microM). Similar results were obtained with Curcumin-95, a mixture of curcuminoids commonly used as a dietary supplement. Incubation of astrocytes with curcumin or CAPE at concentrations that promoted maximal heme oxygenase activity resulted in an early increase in reduced glutathione followed by a significant elevation in oxidized glutathione contents. A curcumin-mediated increase in heme oxygenase activity was not affected by the glutathione precursor and thiol donor N-acetyl-L-cysteine. These data suggest that regulation of HO-1 expression by polyphenolic compounds is evoked by a distinctive mechanism which is not necessarily linked to changes in glutathione but might depend on redox signals sustained by specific and targeted sulfydryl groups. This study identifies a novel class of natural substances that could be used for therapeutic purposes as potent inducers of HO-1 in the protection of tissues against inflammatory and neurodegenerative conditions.


Asunto(s)
Astrocitos/efectos de los fármacos , Ácidos Cafeicos/farmacología , Curcumina/farmacología , Hemo Oxigenasa (Desciclizante)/biosíntesis , Alcohol Feniletílico/análogos & derivados , Alcohol Feniletílico/farmacología , Acetilcisteína/farmacología , Animales , Astrocitos/enzimología , Supervivencia Celular/efectos de los fármacos , Células Cultivadas , Interacciones Farmacológicas , Activación Enzimática/efectos de los fármacos , Inducción Enzimática/efectos de los fármacos , Glutatión/metabolismo , Hemo Oxigenasa (Desciclizante)/metabolismo , Hemo-Oxigenasa 1 , Ratas , Regulación hacia Arriba/efectos de los fármacos
16.
Proc Natl Acad Sci U S A ; 98(24): 13507-13, 2001 Nov 20.
Artículo en Inglés | MEDLINE | ID: mdl-11717422

RESUMEN

Mammalian nutritional status affects the homeostatic balance of multiple physiological processes and their associated gene expression. Although DNA array analysis can monitor large numbers of genes, there are no reports of expression profiling of a micronutrient deficiency in an intact animal system. In this report, we have tested the feasibility of using cDNA arrays to compare the global changes in expression of genes of known function that occur in the early stages of rodent zinc deficiency. The gene-modulating effects of this deficiency were demonstrated by real-time quantitative PCR measurements of altered mRNA levels for metallothionein 1, zinc transporter 2, and uroguanylin, all of which have been previously documented as zinc-regulated genes. As a result of the low level of inherent noise within this model system and application of a recently reported statistical tool for statistical analysis of microarrays [Tusher, V.G., Tibshirani, R. & Chu, G. (2001) Proc. Natl. Acad. Sci. USA 98, 5116-5121], we demonstrate the ability to reproducibly identify the modest changes in mRNA abundance produced by this single micronutrient deficiency. Among the genes identified by this array profile are intestinal genes that influence signaling pathways, growth, transcription, redox, and energy utilization. Additionally, the influence of dietary zinc supply on the expression of some of these genes was confirmed by real-time quantitative PCR. Overall, these data support the effectiveness of cDNA array expression profiling to investigate the pleiotropic effects of specific nutrients and may provide an approach to establishing markers for assessment of nutritional status.


Asunto(s)
Regulación de la Expresión Génica , Mucosa Intestinal/metabolismo , Zinc/deficiencia , Animales , Suplementos Dietéticos , Perfilación de la Expresión Génica , Masculino , Análisis de Secuencia por Matrices de Oligonucleótidos , Ratas , Ratas Sprague-Dawley
17.
Am Heart J ; 142(5): 760-9, 2001 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-11685160

RESUMEN

BACKGROUND: Patients undergoing percutaneous coronary intervention (PCI) for unstable coronary syndromes have substantial emotional and spiritual distress that may promote procedural complications. Noetic (nonpharmacologic) therapies may reduce anxiety, pain and distress, enhance the efficacy of pharmacologic agents, or affect short- and long-term procedural outcomes. METHODS: The Monitoring and Actualization of Noetic Training (MANTRA) pilot study examined the feasibility of applying 4 noetic therapies-stress relaxation, imagery, touch therapy, and prayer-to patients in the setting of acute coronary interventions. Eligible patients had acute coronary syndromes and invasive angiography or PCI. Patients were randomized across 5 treatment groups: the 4 noetic and standard therapies. Questionnaires completed before PCI reflected patients' religious beliefs and anxiety. Index hospitalization end points included post-PCI ischemia, death, myocardial infarction, heart failure, and urgent revascularization. Mortality was followed up for 6 months after hospitalization. RESULTS: Of eligible patients, 88% gave informed consent. Of 150 patients enrolled, 120 were assigned to noetic therapy; 118 (98%) completed their therapeutic assignments. All clinical end points were available for 100% of patients. Results were not statistically significant for any outcomes comparisons. There was a 25% to 30% absolute reduction in adverse periprocedural outcomes in patients treated with any noetic therapy compared with standard therapy. The lowest absolute complication rates were observed in patients assigned to off-site prayer. All mortality by 6-month follow-up was in the noetic therapies group. In patients with questionnaire scores indicating a high level of spiritual belief, a high level of personal spiritual activity, a low level of community-based religious involvement, or a high level of anxiety, noetic therapies appeared to show greater reduction in absolute in-hospital complication rates compared with standard therapy. CONCLUSIONS: Acceptance of noetic adjuncts to invasive therapy for acute coronary syndromes was excellent, and logistics were feasible. No outcomes differences were significant; however, index hospitalization data consistently suggested a therapeutic benefit with noetic therapy. Of all noetic therapies, off-site intercessory prayer had the lowest short- and long-term absolute complication rates. Definitive demonstration of treatment effects of this magnitude would be feasible in a patient population about 4 times that of this pilot study. Absolute mortality differences make safety considerations a mandatory feature of future clinical trials in this area.


Asunto(s)
Enfermedad Coronaria/psicología , Enfermedad Coronaria/cirugía , Angioplastia Coronaria con Balón/psicología , Puente de Arteria Coronaria/psicología , Estudios de Factibilidad , Humanos , Curación Mental/psicología , Proyectos Piloto , Resultado del Tratamiento
18.
Am J Clin Nutr ; 73(2): 323-32, 2001 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-11157331

RESUMEN

BACKGROUND: Malnourished head and neck cancer patients are at increased risk of postoperative complications. OBJECTIVE: We studied the effect of perioperative, arginine-supplemented nutritional support on nutritional status, immune status, postoperative outcome, and survival in severely malnourished (weight loss >10% of body weight) head and neck cancer patients undergoing major surgery. DESIGN: Forty-nine patients were randomly assigned to receive 1) no preoperative and standard postoperative tube feeding, 2) standard preoperative and postoperative tube feeding, or 3) arginine-supplemented preoperative and postoperative tube feeding. RESULTS: Patients in both prefed groups received approximately 9 d of preoperative tube feeding, resulting in energy intakes of 110% and 113% of calculated needs (compared with 79% in the control group; P = 0.007). Compared with no preoperative feeding, preoperative enteral nutrition did not significantly improve nutritional status or any of the studied biochemical or immunologic indexes. Major postoperative complications occurred in 53%, 47%, and 59% of patients in study groups 1, 2, and 3 (NS). A trend was seen toward better survival in the arginine-supplemented group (P = 0.15). Secondary analysis showed that survivors had better human leukocyte antigen-DR expression on monocytes (P = 0.05) and higher endotoxin-induced cytokine production (P = 0.010 for tumor necrosis factor alpha and P = 0.042 for interleukin 6) at the start of the study than did patients who died. CONCLUSIONS: Nine days of preoperative tube feeding, with or without arginine, did not significantly improve nutritional status, reduce the surgery-induced immune suppression, or affect clinical outcome in severely malnourished head and neck cancer patients. Patients supplemented with arginine-enriched nutrition tended to live longer. Some markers of immune function may distinguish patients with good or bad prognoses.


Asunto(s)
Arginina/uso terapéutico , Carcinoma de Células Escamosas/terapia , Neoplasias de Cabeza y Cuello/terapia , Sistema Inmunológico/fisiología , Trastornos Nutricionales/terapia , Estado Nutricional/efectos de los fármacos , Anciano , Arginina/administración & dosificación , Carcinoma de Células Escamosas/complicaciones , Carcinoma de Células Escamosas/inmunología , Carcinoma de Células Escamosas/mortalidad , Suplementos Dietéticos , Nutrición Enteral , Femenino , Antígenos HLA-DR/inmunología , Neoplasias de Cabeza y Cuello/complicaciones , Neoplasias de Cabeza y Cuello/inmunología , Neoplasias de Cabeza y Cuello/mortalidad , Humanos , Sistema Inmunológico/efectos de los fármacos , Interleucina-6/sangre , Masculino , Persona de Mediana Edad , Morbilidad , Trastornos Nutricionales/complicaciones , Atención Perioperativa , Cuidados Posoperatorios , Pronóstico , Análisis de Supervivencia , Factores de Tiempo , Factor de Necrosis Tumoral alfa/análisis , Pérdida de Peso
19.
Complement Ther Nurs Midwifery ; 7(4): 180-7, 2001 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-11855800

RESUMEN

This paper is a reflective account of our experiences of giving Therapeutic Touch (TT), for the first time within a learning disability setting, to a client who has profound learning disabilities. Using a case study approach, we share our story of this pathfinder journey of discovery and show how the process of reflection was instrumental in enabling us to gain insight on the unfolding therapeutic and caring relationship which we developed with this client. Issues relating to informed consent were addressed, however these were complex and needed special consideration. As client consent could not be achieved through verbal means we needed to draw on our senses and use intuitive skills together with team involvement. IntroducingTT into a learning disability setting was breaking new ground, and as this case study has shown it does appear to have the potential to enhance therapeutic caring.


Asunto(s)
Discapacidades para el Aprendizaje/rehabilitación , Tacto Terapéutico/métodos , Adulto , Humanos , Relaciones Interprofesionales , Masculino , Relaciones Profesional-Paciente , Resultado del Tratamiento
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