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1.
Obes Surg ; 29(5): 1551-1556, 2019 05.
Artículo en Inglés | MEDLINE | ID: mdl-30652245

RESUMEN

BACKGROUND: Adherence to post-bariatric surgery nutritional supplements can be poor and is associated with higher micronutrient deficiency rates. There is currently no available study specifically seeking patients' perspectives on the reasons behind poor adherence and how to address it. METHODS: Bariatric surgery patients living in the UK were invited to take part in an anonymous survey on SurveyMonkey®. RESULTS: A total of 529 patients (92.61% females, mean age 47.7 years) took part. Most of these patients had undergone either a Roux-en-Y gastric bypass (63.0%) or sleeve gastrectomy (24.0%). Most of the patients were in full-time (49.0%, n = 260/529) or part-time (15.7%, n = 83/529) employment. Approximately 54.0% (n = 287/529) of the respondents reported having trouble taking all their supplements. Males were significantly more likely to report complete compliance. The most important reported reason for poor compliance was difficulty in remembering (45.6%), followed by too many tablets (16.4%), side effects (14.3%), cost (11.5%), non-prescribing by GP (10.8%), bad taste (10.1%), and not feeling the need to take (9.4%). Patients suggested reducing the number of tablets (41.8%), patient education (25.7%), GP education (24.0%), reducing the cost (18.5%), and more information from a healthcare provider (12.5%) or a pharmacist (5.2%) to improve the compliance. CONCLUSIONS: This study is the first attempt to understand patient perspectives on poor adherence to post-bariatric surgery nutritional recommendation. Patients offered a number of explanations and also provided with suggestions on how to improve it.


Asunto(s)
Cirugía Bariátrica/efectos adversos , Enfermedades Carenciales/tratamiento farmacológico , Suplementos Dietéticos , Cumplimiento de la Medicación , Micronutrientes/administración & dosificación , Obesidad Mórbida/cirugía , Adulto , Anciano , Cirugía Bariátrica/psicología , Enfermedades Carenciales/etiología , Enfermedades Carenciales/psicología , Femenino , Humanos , Masculino , Cumplimiento de la Medicación/psicología , Persona de Mediana Edad , Obesidad Mórbida/psicología , Adulto Joven
2.
Vitam Horm ; 103: 295-326, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28061974

RESUMEN

Elements (bioelements) are necessary factors required for the physiological function of organisms. They are critically involved in fundamental processes of life. Extra- and intracellular message and metabolic pathway factors as well as structural components include one or many elements in their functional structure. Recent years have seen an intensification in terms of knowledge gained about the roles of elements in anxiety disorders. In this chapter we present a review of the most important current data concerning the involvement of zinc, magnesium, copper, lithium, iron, and manganese, and their deficiency, in the pathophysiology and treatment of anxiety.


Asunto(s)
Trastornos de Ansiedad/etiología , Ansiedad/etiología , Enfermedades Carenciales/fisiopatología , Modelos Animales de Enfermedad , Oligoelementos/deficiencia , Animales , Ansiedad/prevención & control , Trastornos de Ansiedad/prevención & control , Enfermedades Carenciales/dietoterapia , Enfermedades Carenciales/psicología , Suplementos Dietéticos , Humanos , Magnesio/uso terapéutico , Deficiencia de Magnesio/dietoterapia , Deficiencia de Magnesio/fisiopatología , Deficiencia de Magnesio/psicología , Oligoelementos/uso terapéutico , Zinc/deficiencia , Zinc/uso terapéutico
3.
Crit Rev Food Sci Nutr ; 57(1): 212-223, 2017 Jan 02.
Artículo en Inglés | MEDLINE | ID: mdl-25830700

RESUMEN

Depression is a common, recurrent, and debilitating illness that has become more prevalent over the past 100 years. This report reviews the etiology and pathophysiology of depression, and explores the role of omega 3 polyunsaturated fatty acids (n-3 PUFA) as a possible treatment. In seeking to understand depression, genetic factors and environmental influences have been extensively investigated. Research has led to several hypotheses for the pathophysiological basis of depression but a definitive pathogenic mechanism, or group thereof, has hitherto remained equivocal. To date, treatment has been based on the monoamine hypothesis and hence, selective serotonin reuptake inhibitors have been the most widely used class of medication. In the last decade, there has been considerable interest in n-3 PUFAs and their role in depression. These fatty acids are critical for development and function of the central nervous system. Increasing evidence from epidemiological, laboratory, and randomized placebo-controlled trials suggests deficiency of dietary n-3 PUFAs may contribute to development of mood disorders, and supplementation with n-3 PUFAs may provide a new treatment option. Conclusions based on systematic reviews and meta-analyses of published trials to date vary. Research into the effects of n-3 PUFAs on depressed mood is limited. Furthermore, results from such have led to conflicting conclusions regarding the efficacy of n-3 PUFAs in affecting reduction in symptoms of depression. PUFAs are generally well tolerated by adults and children although mild gastrointestinal effects are reported. There is mounting evidence to suggest that n-3 PUFAs play a role in depression and deserve greater research efforts.


Asunto(s)
Enfermedades Carenciales/dietoterapia , Depresión/prevención & control , Trastorno Depresivo Mayor/prevención & control , Suplementos Dietéticos , Medicina Basada en la Evidencia , Ácidos Grasos Esenciales/deficiencia , Ácidos Grasos Omega-3/uso terapéutico , Animales , Antidepresivos/uso terapéutico , Enfermedades Carenciales/metabolismo , Enfermedades Carenciales/fisiopatología , Enfermedades Carenciales/psicología , Depresión/tratamiento farmacológico , Depresión/etiología , Depresión/genética , Trastorno Depresivo Mayor/tratamiento farmacológico , Trastorno Depresivo Mayor/etiología , Trastorno Depresivo Mayor/genética , Dieta Occidental/efectos adversos , Dieta Occidental/psicología , Suplementos Dietéticos/efectos adversos , Ácidos Grasos Esenciales/efectos adversos , Ácidos Grasos Esenciales/uso terapéutico , Ácidos Grasos Omega-3/efectos adversos , Femenino , Aceites de Pescado/efectos adversos , Aceites de Pescado/uso terapéutico , Predisposición Genética a la Enfermedad , Humanos , Masculino , Factores Sexuales
4.
Nutr Neurosci ; 19(4): 145-55, 2016 May.
Artículo en Inglés | MEDLINE | ID: mdl-24915543

RESUMEN

OBJECTIVE: To use proton magnetic resonance spectroscopy ((1)H MRS) to investigate the effects of fish oil (FO) supplementation on cortical metabolite concentrations in adolescents with major depressive disorder (MDD). METHODS: Metabolite concentrations were determined by (1)H MRS in the anterior cingulate cortex and bilateral dorsolateral prefrontal cortex (DLPFC) of adolescents with MDD before and following 10-week open-label supplementation with low (2.4 g/day, n = 7) or high (16.2 g/day, n = 7) dose FO. Depressive symptom severity scores and erythrocyte fatty acid levels were also determined. RESULTS: Baseline erythrocyte eicosapentaenoic acid (EPA) composition was positively correlated, and arachidonic acid (AA) and the AA/EPA ratio were inversely correlated, with choline (Cho) concentrations in the right DLPFC. Docosahexaenoic acid (DHA) composition was inversely correlated with myo-inositol (mI) concentrations in the left DLPFC. Erythrocyte EPA and DHA composition increased, and AA decreased, significantly following low-dose and high-dose FO supplementation. In the intent-to-treat sample, depressive symptom severity scores decreased significantly in the high-dose group (-40%, P < 0.0001) and there was a trend in the low-dose group (-20%, P = 0.06). There were no significant baseline-endpoint changes in metabolite levels in each voxel. In the low-dose group there were changes with large effect sizes, including a decrease in mI in the left DLPFC (-12%, P = 0.18, d = 0.8) and increases in glutamate + glutamine (Glx) (+12%, P = 0.19, d = 0.8) and Cho (+15%, P = 0.08, d = 1.2) in the right DLPFC. In the high-dose group, there was a trend for increases in Cho in the right DLPFC (+10%, P = 0.09, d = 1.2). DISCUSSION: These preliminary data suggest that increasing the LCn-3 fatty acid status of adolescent MDD patients is associated with subtle changes in Glx, mI, and Cho concentrations in the DLPFC that warrant further evaluation in a larger controlled trial.


Asunto(s)
Fenómenos Fisiológicos Nutricionales de los Adolescentes , Enfermedades Carenciales/dietoterapia , Trastorno Depresivo Mayor/prevención & control , Suplementos Dietéticos , Ácidos Grasos Esenciales/uso terapéutico , Aceites de Pescado/uso terapéutico , Adolescente , Adulto , Niño , Fenómenos Fisiológicos Nutricionales Infantiles , Enfermedades Carenciales/metabolismo , Enfermedades Carenciales/fisiopatología , Enfermedades Carenciales/psicología , Trastorno Depresivo Mayor/diagnóstico por imagen , Trastorno Depresivo Mayor/etiología , Trastorno Depresivo Mayor/metabolismo , Manual Diagnóstico y Estadístico de los Trastornos Mentales , Ácidos Grasos Esenciales/deficiencia , Ácidos Grasos Esenciales/metabolismo , Femenino , Aceites de Pescado/administración & dosificación , Giro del Cíngulo/diagnóstico por imagen , Giro del Cíngulo/metabolismo , Humanos , Análisis de Intención de Tratar , Perdida de Seguimiento , Imagen por Resonancia Magnética , Masculino , Neuroimagen , Corteza Prefrontal/diagnóstico por imagen , Corteza Prefrontal/metabolismo , Escalas de Valoración Psiquiátrica , Adulto Joven
5.
Public Health Nutr ; 17(9): 1960-70, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24476840

RESUMEN

OBJECTIVE: To assess sociodemographic correlates of micronutrient intakes from food and dietary supplements in an urban, ethnically diverse sample of pregnant women in the USA. DESIGN: Cross-sectional analyses of data collected using a validated semi-quantitative FFQ. Associations between racial, ethnic and sociodemographic factors and micronutrient intakes were examined using logistic regression controlling for pre-pregnancy BMI, maternal age and smoking status. SETTING: Prenatal clinics, Boston, MA, USA. SUBJECTS: Analyses included pregnant women (n 274) in the PRogramming of Intergenerational Stress Mechanisms (PRISM) study, an urban longitudinal cohort designed to examine how stress influences respiratory health in children when controlling for other environmental exposures (chemical stressors, nutrition). RESULTS: High frequencies of vitamin E (52 %), Mg (38 %), Fe (57 %) and vitamin D (77 %) inadequacies as well as suboptimal intakes of choline (95 %) and K (99 %) were observed. Factors associated with multiple antioxidant inadequacies included being Hispanic or African American, lower education and self-reported economic-related food insecurity. Hispanics had a higher prevalence of multiple methyl-nutrient inadequacies compared with African Americans; both had suboptimal betaine intakes and higher odds for vitamin B6 and Fe inadequacies compared with Caucasians. Nearly all women (98 %) reported Na intakes above the tolerable upper limit; excessive intakes of Mg (35 %), folate (37 %) and niacin (38 %) were also observed. Women reporting excessive intakes of these nutrients were more likely Caucasian or Hispanic, more highly educated, US-born and did not report food insecurity. CONCLUSIONS: Racial/ethnic and other sociodemographic factors should be considered when tailoring periconceptional dietary interventions for urban ethnic women in the USA.


Asunto(s)
Enfermedades Carenciales/etiología , Dieta/efectos adversos , Abastecimiento de Alimentos , Fenómenos Fisiologicos Nutricionales Maternos , Micronutrientes/deficiencia , Complicaciones del Embarazo/etiología , Estrés Psicológico , Adulto , Negro o Afroamericano , Boston/epidemiología , Estudios de Cohortes , Estudios Transversales , Enfermedades Carenciales/epidemiología , Enfermedades Carenciales/etnología , Enfermedades Carenciales/psicología , Dieta/economía , Dieta/etnología , Dieta/psicología , Femenino , Abastecimiento de Alimentos/economía , Hispánicos o Latinos , Humanos , Estudios Longitudinales , Fenómenos Fisiologicos Nutricionales Maternos/etnología , Micronutrientes/administración & dosificación , Micronutrientes/economía , Evaluación Nutricional , Embarazo , Complicaciones del Embarazo/epidemiología , Complicaciones del Embarazo/etnología , Complicaciones del Embarazo/psicología , Prevalencia , Riesgo , Factores Socioeconómicos , Estrés Psicológico/economía , Estrés Psicológico/etnología , Salud Urbana/economía , Salud Urbana/etnología
6.
Can J Diet Pract Res ; 75(4): 195-201, 2014 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-26067073

RESUMEN

A Nutrition Screening Form (NSF) was designed to identify lifestyle risk factors that negatively impact fertility and to provide a descriptive profile of 300 female infertility patients in a private urban infertility clinic. The NSF was mailed to all new patients prior to the initial physician's visit and self-reported data were assessed using specific criteria to determine if a nutrition referral was warranted. This observational study revealed that 43% of the women had a body mass index (BMI) <20 or ≥25 kg/m(2), known risks for infertility. Almost half reported a history of "dieting" and unrealistic weight goals potentially limiting energy and essential nutrients. A high number reported eating disorders, vegetarianism, low fat or low cholesterol diets, and dietary supplement use. Fourteen percent appeared not to supplement with folic acid, 13% rated exercise as "extremely" or "very active", and 28% reported a "high" perceived level of stress. This preliminary research demonstrated that a NSF can be a useful tool to identify nutrition-related lifestyle factors that may negatively impact fertility and identified weight, BMI, diet, exercise, and stress as modifiable risk factors deserving future research. NSF information can help increase awareness among health professionals and patients about the important link between nutrition, fertility, and successful reproductive outcomes.


Asunto(s)
Enfermedades Carenciales/etiología , Trastornos de Alimentación y de la Ingestión de Alimentos/diagnóstico , Infertilidad Femenina/etiología , Estilo de Vida , Estado Nutricional , Sobrepeso/etiología , Delgadez/etiología , Adulto , Índice de Masa Corporal , Enfermedades Carenciales/complicaciones , Enfermedades Carenciales/psicología , Dieta Reductora/efectos adversos , Dieta Reductora/psicología , Dieta Vegetariana/efectos adversos , Dieta Vegetariana/psicología , Ejercicio Físico/psicología , Trastornos de Alimentación y de la Ingestión de Alimentos/epidemiología , Trastornos de Alimentación y de la Ingestión de Alimentos/fisiopatología , Femenino , Humanos , Infertilidad Femenina/complicaciones , Infertilidad Femenina/psicología , Evaluación Nutricional , Ontario/epidemiología , Sobrepeso/complicaciones , Sobrepeso/psicología , Factores de Riesgo , Autoinforme , Delgadez/complicaciones , Delgadez/psicología
7.
Nutr Res Rev ; 25(1): 180-92, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-22853878

RESUMEN

Postpartum depression (PPD) is a relatively common and often severe mood disorder that develops in women after childbirth. The aetiology of PPD is unclear, although there is emerging evidence to suggest a psychoneuroimmune connection. Additionally, deficiencies in n-3 PUFA, B vitamins, vitamin D and trace minerals have been implicated. This paper reviews evidence for a link between micronutrient status and PPD, analysing the potential contribution of each micronutrient to psychoneuroimmunological mechanisms of PPD. Articles related to PPD and women's levels of n-3 PUFA, B vitamins, vitamin D and the trace minerals Zn and Se were reviewed. Findings suggest that while n-3 PUFA levels have been shown to vary inversely with PPD and link with psychoneuroimmunology, there is mixed evidence regarding the ability of n-3 PUFA to prevent or treat PPD. B vitamin status is not clearly linked to PPD, even though it seems to vary inversely with depression in non-perinatal populations and may have an impact on immunity. Vitamin D and the trace minerals Zn and Se are linked to PPD and psychoneuroimmunology by intriguing, but small, studies. Overall, evidence suggests that certain micronutrient deficiencies contribute to the development of PPD, possibly through psychoneuroimmunological mechanisms. Developing a better understanding of these mechanisms is important for guiding future research, clinical practice and health education regarding PPD.


Asunto(s)
Enfermedades Carenciales/complicaciones , Depresión Posparto/etiología , Dieta , Micronutrientes/deficiencia , Estado Nutricional , Psiconeuroinmunología , Enfermedades Carenciales/inmunología , Enfermedades Carenciales/psicología , Depresión Posparto/inmunología , Ácidos Grasos Omega-3/uso terapéutico , Femenino , Humanos , Selenio/deficiencia , Deficiencia de Vitamina B/complicaciones , Deficiencia de Vitamina D/complicaciones , Zinc/deficiencia
9.
Clin Cardiol ; 34(4): 211-7, 2011 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-21462215

RESUMEN

BACKGROUND: Studies have suggested that micronutrient deficiency has some role in the progression of chronic heart failure (CHF). HYPOTHESIS: Oral supplementation with coenzyme Q(10) (CoQ(10)) and creatine may reduce mitochondrial dysfunction that contributes to impaired physical performance in CHF. METHODS: We conducted a randomized, double-blind, placebo-controlled trial to determine the effect of a mixture of water-soluble CoQ(10) (CoQ(10) terclatrate; Q-ter) and creatine on exercise tolerance and health-related quality of life. Exercise tolerance was measured as total work capacity (kg·m) and peak oxygen consumption (VO(2), mL/min/kg), both from a cardiopulmonary exercise test. Health-related quality of life was measured by the Sickness Impact Profile (SIP) in CHF secondary to left ventricular systolic dysfunction (left ventricular ejection fraction ≤ 35%). After baseline assessment, 67 patients with stable CHF were randomized to receive Q-ter 320 mg + creatine 340 mg (n = 35) or placebo (n = 32) once daily for 8 weeks. RESULTS: At multivariate analysis, 8-week peak VO(2) was significantly higher in the active treatment group than in the placebo group (+1.8 ± 0.9 mL/min/kg, 95% CI: 0.1-3.6, P < 0.05). No untoward effects occurred in either group. CONCLUSIONS: This study suggests that oral Q-ter and creatine, added to conventional drug therapy, exert some beneficial effect on physical performance in stable systolic CHF. Results may support the design of larger studies aimed at assessing the long-term effects of this treatment on functional status and harder outcomes.


Asunto(s)
Creatina/administración & dosificación , Enfermedades Carenciales/tratamiento farmacológico , Suplementos Dietéticos , Insuficiencia Cardíaca/tratamiento farmacológico , Ubiquinona/análogos & derivados , Administración Oral , Anciano , Distribución de Chi-Cuadrado , Enfermedad Crónica , Creatina/efectos adversos , Creatina/deficiencia , Enfermedades Carenciales/fisiopatología , Enfermedades Carenciales/psicología , Método Doble Ciego , Combinación de Medicamentos , Prueba de Esfuerzo , Tolerancia al Ejercicio/efectos de los fármacos , Femenino , Insuficiencia Cardíaca/fisiopatología , Insuficiencia Cardíaca/psicología , Humanos , Masculino , Cumplimiento de la Medicación , Consumo de Oxígeno/efectos de los fármacos , Efecto Placebo , Calidad de Vida , Volumen Sistólico , Factores de Tiempo , Resultado del Tratamiento , Ubiquinona/administración & dosificación , Ubiquinona/efectos adversos , Ubiquinona/deficiencia , Función Ventricular Izquierda
10.
Psychol Bull ; 133(5): 747-60, 2007 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-17723028

RESUMEN

In this article, the authors explore the breadth and depth of published research linking dietary vitamins and minerals (micronutrients) to mood. Since the 1920s, there have been many studies on individual vitamins (especially B vitamins and Vitamins C, D, and E), minerals (calcium, chromium, iron, magnesium, zinc, and selenium), and vitamin-like compounds (choline). Recent investigations with multi-ingredient formulas are especially promising. However, without a reasonable conceptual framework for understanding mechanisms by which micronutrients might influence mood, the published literature is too readily dismissed. Consequently, 4 explanatory models are presented, suggesting that mood symptoms may be expressions of inborn errors of metabolism, manifestations of deficient methylation reactions, alterations of gene expression by nutrient deficiency, and/or long-latency deficiency diseases. These models provide possible explanations for why micronutrient supplementation could ameliorate some mental symptoms.


Asunto(s)
Afecto/fisiología , Micronutrientes/fisiología , Minerales/metabolismo , Vitaminas/fisiología , Encéfalo/fisiopatología , Enfermedades Carenciales/fisiopatología , Enfermedades Carenciales/psicología , Humanos , Errores Innatos del Metabolismo/fisiopatología , Errores Innatos del Metabolismo/psicología , Trastornos del Humor/fisiopatología , Trastornos del Humor/psicología
11.
Med Hypotheses ; 68(3): 515-24, 2007.
Artículo en Inglés | MEDLINE | ID: mdl-17045757

RESUMEN

Omega-3 fatty acids are a type of polyunsaturated fatty acid (PUFA). A growing body of evidence suggests that this form PUFA is a useful and well tolerated treatment for major depressive disorder, a common and serious mental illness. The efficacy of omega-3 PUFA is routinely explained as being due to a deficiency caused by inadequate dietary intake of this class of fatty acid. The hypothesis considered states that low omega-3 PUFA abundance in patients with major depressive and related disorders is due to an underlying genetically determined abnormality. The hypothesis can explain why although a specific and consistent deficit in omega-3, but not omega-6, PUFA occurs in major depressive and related disorders, the literature does not consistently support the notion that this is due to deficient dietary intake. Specifically it is hypothesized that having genetically determined low activity of fatty acid CoA ligase 4 and/or Type IV phospholipase A(2) combined with the low dietary availability of omega-3 PUFA results in reduced cellular uptake of omega-3 PUFA and constitutes a risk factor for depression. The hypothesis also has important consequences for the pharmacological treatment of depression in that it predicts that administering agents which enhance phospholipid synthesis, particularly those containing ethanolamine such as CDP-ethanolamine, should be effective antidepressants especially when co-administered with omega-3 PUFA.


Asunto(s)
Enfermedades Carenciales/psicología , Trastorno Depresivo/etiología , Trastorno Depresivo/genética , Dieta , Ácidos Grasos Omega-3/metabolismo , Fosfolípidos/metabolismo , Trastorno Depresivo/metabolismo , Ambiente , Femenino , Humanos , Masculino
12.
Pharmacol Biochem Behav ; 84(2): 378-84, 2006 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-16828857

RESUMEN

Diurnal effects on motor control are evident in the human disease of Restless Leg Syndrome (RLS), which is purported to be linked to brain iron deficiency as well as alterations in dopaminergic systems. Thus, we explored the relationship between daily rhythms, the onset of motor dysregulation and brain iron deficiency in an animal model of iron deficiency. Male and female weanling Sprague-Dawley rats consuming control (CN) or iron-deficient (ID) diets were examined weekly for acoustic startle response (ASR) and prepulse inhibition (PPI) for a 5-week period. Iron deficiency reduced the magnitude, but not timing, of the ASR at specific time points. ASR was elevated 60% at the onset of the dark cycle relative to the median of the light cycle in male CN and ID rats. The respective elevation was 400% and 150% in female CN and ID rats during the first 2 weeks of testing. The diurnal cycle of ASR response was attenuated by 3 weeks of testing in both dietary treatment groups. PPI was not affected by iron deficiency, sex, diurnal cycle or the interaction between these factors. These results thus demonstrate that iron deficiency moderately alters ASR signaling although the inhibitory pathways of ASR do not appear to be affected.


Asunto(s)
Ritmo Circadiano/efectos de los fármacos , Deficiencias de Hierro , Reflejo de Sobresalto/efectos de los fármacos , Estimulación Acústica , Animales , Conducta Animal/efectos de los fármacos , Peso Corporal , Enfermedades Carenciales/psicología , Femenino , Inhibición Psicológica , Masculino , Ratas , Ratas Sprague-Dawley , Reflejo Acústico
13.
Clin Neurophysiol ; 115(10): 2259-66, 2004 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-15351367

RESUMEN

OBJECTIVE: A decrease in iron concentration is accompanied by alterations in catecholaminergic and GABAergic neurotransmission systems, important in learning, memory and attention. It was hypothesized that iron deficient children would present attention deficits. A visual-event related potentials (ERPs) study is presented using an oddball paradigm in order to determine the P300 in ID children. METHODS: After medical examination, blood was obtained from 201 children for a complete hematological study. Two groups were selected, iron deficient (ID) (serum iron <60 microg/dl) and control (C) (serum iron >60 microg/dl). In both groups ERPs were recorded while executing a continuous performance task (oddball paradigm). Afterwards iron levels were restored in ID children by iron supplementation (ID-IS group) and all tests reapplied. RESULTS: ID children almost lacked a P300 in central and parietal regions. After iron supplementation, P300 clearly became evident although its Pz amplitude remained smaller compared to C children. CONCLUSIONS: A clear and strong correlation was found between ID and attention alterations in children. Iron supplementation nearly brings the P300 to normal levels although it is not known if the P300 difference in Pz is due to other nutritional/environmental deficits or to developmental psychomotor impairments in ID children. SIGNIFICANCE: It has been long known that iron deficient children have cognitive impairments but there is an insufficient number of electrophysiological works allowing to identify the source of this problem. In this work an attention deficit is demonstrated in ID children through a severely reduced P300, which recovers substantially after iron supplementation.


Asunto(s)
Potenciales Relacionados con Evento P300/efectos de los fármacos , Deficiencias de Hierro , Hierro de la Dieta/uso terapéutico , Conducta , Recuento de Células Sanguíneas , Niño , Enfermedades Carenciales/sangre , Enfermedades Carenciales/psicología , Suplementos Dietéticos , Potenciales Evocados Visuales/efectos de los fármacos , Potenciales Evocados Visuales/fisiología , Femenino , Humanos , Masculino , Desempeño Psicomotor/efectos de los fármacos , Desempeño Psicomotor/fisiología
14.
Med Hypotheses ; 34(2): 131-40, 1991 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-2041487

RESUMEN

A long list of psychiatrically inclined illnesses or symptoms, especially some cases of mood disorder, dementia, paranoid psychoses, violent behavior and fatigue, have been documented to be caused by vitamin-B12 deficiency, among other causes. The author uses reputably published literature--and extrapolations from it--to show that these conditions are possibly more commonly caused by B12 deficiency than is currently generally accepted, mostly because of a lack of appreciation of the lowest serum-B12 level that is necessary to protect against the cerebral manifestations of this deficiency. After surveying the whole area of psychiatry and nutritional deficiencies in general, the author deals with the role of vitamin-B12 in mood disorders, paranoid psychoses and dementia in more detail. In doing so, he cites some useful conclusions from the literature, including the debunking of several myths about the diagnosis and treatment of brain-B12-deficiency, especially the efficacy of high dose oral treatment and the relative inefficacy of the Schilling's test.


Asunto(s)
Trastornos Mentales/etiología , Deficiencia de Vitamina B 12/psicología , Enfermedades Carenciales/psicología , Demencia/etiología , Humanos , Trastornos del Humor/etiología
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