RESUMO
BACKGROUND: In Pakistan, the prevalence of stunting among children younger than 5 y has remained above WHO critical thresholds (≥30%) over the past 2 decades. OBJECTIVES: We hypothesized that an unconditional cash transfer (UCT) combined with lipid-based nutrient supplement (LNS) and/or social and behavior change communication (SBCC) will prevent stunting among children 6-23 mo of age. METHODS: This was a 4-arm, community-based cluster randomized controlled trial conducted in the district of Rahim Yar Khan, Pakistan. A total of 1729 children (UCT, n = 434; UCT + SBCC, n = 433; UCT + LNS, n = 430; and UCT + LNS + SBCC, n = 432) were enrolled at 6 mo of age and measured monthly for 18 mo until the age of 24 mo. RESULTS: At 24 mo of age, children who received UCT + LNS [rate ratio (RR): 0.85; 95% CI: 0.74, 0.97; P = 0.015) and UCT + LNS + SBCC (RR: 0.86; 95% CI: 0.77, 0.96; P = 0.007) had a significantly lower risk of being stunted compared with the UCT arm. No significant difference was noted among children who received UCT + SBCC (RR: 1.03; 95% CI: 0.91, 1.16; P = 0.675) in the risk of being stunted compared with the UCT arm. The pooled prevalence of stunting among children aged 6-23 mo was 41.7%, 44.8%, 38.5%, and 39.3% in UCT, UCT + SBCC, UCT + LNS, and UCT + LNS + SBCC, respectively. In pairwise comparisons, a significant impact on stunting among children in UCT + LNS (P = 0.029) and UCT + LNS + SBCC (P = <0.001) was noted compared with the UCT arm. CONCLUSIONS: UCT combined with LNS and UCT + LNS + SBCC were effective in reducing the prevalence of stunting among children aged 6-23 mo in marginalized populations. UCT + SBCC was not effective in reducing the child stunting prevalence. This trial was registered at clinicaltrials.gov as NCT03299218.
Assuntos
Terapia Comportamental/métodos , Suplementos Nutricionais/economia , Comportamento Alimentar/psicologia , Assistência Alimentar/economia , Transtornos do Crescimento/prevenção & controle , Adulto , Análise por Conglomerados , Feminino , Transtornos do Crescimento/epidemiologia , Humanos , Lactente , Lipídeos/administração & dosagem , Masculino , Paquistão/epidemiologia , PrevalênciaRESUMO
Brown adipose tissue (BAT) activation is associated with increased energy expenditure by inducing non-shivering thermogenesis. The ingestion of a milk fat globule membrane (MFGM) supplement and a high calorie diet are reported gateways into BAT activation. However, little is known about the effect of the MFGM and high calorie diets on BAT volume. To gain insight into this, mice were maintained on a high-fat (HF) or low-fat (LF) diet in conjunction with either full-cream (FC) or skim bovine dairy milk (BDM). After being maintained on their respective diets for 13 weeks, their body composition, including BAT volume, was measured using X-ray microtomography. A high calorie diet resulted in an increase in the BAT volume and mice consuming an HF diet in conjunction with FC BDM had a significantly greater BAT volume than all the other groups. Conversely, mice consuming an HF diet in addition to skim milk had a lower BAT volume compared to the HF control. The data presented suggest that the consumption of a high calorie diet in conjunction with FC BDM increases the BAT volume in wild-type mice. This study may provide valuable insight into future studies investigating BAT volume and BAT activity in relation to environmental factors, including diet.
Assuntos
Tecido Adiposo Marrom/efeitos dos fármacos , Composição Corporal/efeitos dos fármacos , Ingestão de Alimentos/efeitos dos fármacos , Glicolipídeos/administração & dosagem , Glicoproteínas/administração & dosagem , Leite/química , Animais , Bovinos , Dieta com Restrição de Gorduras/métodos , Dieta Hiperlipídica/métodos , Gotículas Lipídicas , Lipídeos/administração & dosagem , Camundongos , Termogênese/efeitos dos fármacosRESUMO
The aim of the present study was to examine differences and correlations in nutrient intakes and serum parameters related to nutrient intake (lipid profile, vitamins, and trace elements) in 200 lifelong Christian Orthodox Church (COC) fasters with periodic abstinence from certain foods (predominantly of animal origin) for approximately half of the year and 200 non-fasting controls, all of whom did not take dietary supplements. Nutrient intakes were assessed through three-day dietary recalls. Blood samples were drawn for the analysis of potential biomarkers of nutrient intake. Fasters had lower energy intake, due to lower fat and protein intake, compared to non-fasters (p < 0.05). Fasters also had lower intakes of vitamins A, B1, B2, B6, B12, D, folate, pantothenate, sodium, calcium, zinc, and phosphorus. Most participants (in both groups) did not meet the recommended dietary allowances of most vitamins and elements. Most serum biochemical parameters did not reflect the differences in nutrient intakes between groups, and none exhibited a correlation coefficient above 0.5 with nutrient intakes. Our findings suggest that COC fasting is associated with reduced intake of many nutrients, although this does not seem to have an impact on the blood biochemical profile.
Assuntos
Ingestão de Energia , Jejum , Lipídeos/sangue , Religião , Oligoelementos/sangue , Vitaminas/sangue , Adulto , Biomarcadores/sangue , Estudos Transversais , Dieta , Suplementos Nutricionais , Ingestão de Alimentos , Feminino , Humanos , Lipídeos/administração & dosagem , Masculino , Pessoa de Meia-Idade , Nutrientes/administração & dosagem , Recomendações Nutricionais , Oligoelementos/administração & dosagem , Vitaminas/administração & dosagem , Adulto JovemRESUMO
BACKGROUND: Small-quantity lipid-based nutrient supplements (SQ-LNSs) have been shown to reduce the prevalence of child anemia and iron deficiency, but effects on other micronutrients are less well known. Identifying subgroups who benefit most from SQ-LNSs could support improved program design. OBJECTIVES: We aimed to identify study-level and individual-level modifiers of the effect of SQ-LNSs on child hemoglobin (Hb), anemia, and inflammation-adjusted micronutrient status outcomes. METHODS: We conducted a 2-stage meta-analysis of individual participant data from 13 randomized controlled trials of SQ-LNSs provided to children 6-24 mo of age (n = 15,946). We generated study-specific and subgroup estimates of SQ-LNSs compared with control, and pooled the estimates using fixed-effects models. We used random-effects meta-regression to examine potential study-level effect modifiers. RESULTS: SQ-LNS provision decreased the prevalence of anemia (Hb < 110 g/L) by 16% (relative reduction), iron deficiency (plasma ferritin < 12 µg/L) by 56%, and iron deficiency anemia (IDA; Hb < 110 g/L and plasma ferritin <12 µg/L) by 64%. We observed positive effects of SQ-LNSs on hematological and iron status outcomes within all subgroups of the study- and individual-level effect modifiers, but effects were larger in certain subgroups. For example, effects of SQ-LNSs on anemia and iron status were greater in trials that provided SQ-LNSs for >12 mo and provided 9 (as opposed to <9) mg Fe/d, and among later-born (than among first-born) children. There was no effect of SQ-LNSs on plasma zinc or retinol, but there was a 7% increase in plasma retinol-binding protein (RBP) and a 56% reduction in vitamin A deficiency (RBP < 0.70 µmol/L), with little evidence of effect modification by individual-level characteristics. CONCLUSIONS: SQ-LNSs can substantially reduce the prevalence of anemia, iron deficiency, and IDA among children across a range of individual, population, and study design characteristics. Policy-makers and program planners should consider SQ-LNSs within intervention packages to prevent anemia and iron deficiency.This trial was registered at www.crd.york.ac.uk/PROSPERO as CRD42020156663.
Assuntos
Anemia Ferropriva/epidemiologia , Anemia/epidemiologia , Suplementos Nutricionais , Fenômenos Fisiológicos da Nutrição do Lactente , Lipídeos/administração & dosagem , Estado Nutricional , África Subsaariana/epidemiologia , Bangladesh/epidemiologia , Pré-Escolar , Modificador do Efeito Epidemiológico , Feminino , Humanos , Lactente , Masculino , Micronutrientes/sangue , Micronutrientes/deficiência , Ensaios Clínicos Controlados Aleatórios como AssuntoRESUMO
BACKGROUND: Small-quantity (SQ) lipid-based nutrient supplements (LNSs) provide many nutrients needed for brain development. OBJECTIVES: We aimed to generate pooled estimates of the effect of SQ-LNSs on developmental outcomes (language, social-emotional, motor, and executive function), and to identify study-level and individual-level modifiers of these effects. METHODS: We conducted a 2-stage meta-analysis of individual participant data from 14 intervention against control group comparisons in 13 randomized trials of SQ-LNSs provided to children age 6-24 mo (total n = 30,024). RESULTS: In 11-13 intervention against control group comparisons (n = 23,588-24,561), SQ-LNSs increased mean language (mean difference: 0.07 SD; 95% CI: 0.04, 0.10 SD), social-emotional (0.08; 0.05, 0.11 SD), and motor scores (0.08; 95% CI: 0.05, 0.11 SD) and reduced the prevalence of children in the lowest decile of these scores by 16% (prevalence ratio: 0.84; 95% CI: 0.76, 0.92), 19% (0.81; 95% CI: 0.74, 0.89), and 16% (0.84; 95% CI: 0.76, 0.92), respectively. SQ-LNSs also increased the prevalence of children walking without support at 12 mo by 9% (1.09; 95% CI: 1.05, 1.14). Effects of SQ-LNSs on language, social-emotional, and motor outcomes were larger among study populations with a higher stunting burden (≥35%) (mean difference: 0.11-0.13 SD; 8-9 comparisons). At the individual level, greater effects of SQ-LNSs were found on language among children who were acutely malnourished (mean difference: 0.31) at baseline; on language (0.12), motor (0.11), and executive function (0.06) among children in households with lower socioeconomic status; and on motor development among later-born children (0.11), children of older mothers (0.10), and children of mothers with lower education (0.11). CONCLUSIONS: Child SQ-LNSs can be expected to result in modest developmental gains, which would be analogous to 1-1.5 IQ points on an IQ test, particularly in populations with a high child stunting burden. Certain groups of children who experience higher-risk environments have greater potential to benefit from SQ-LNSs in developmental outcomes.This trial was registered at www.crd.york.ac.uk/PROSPERO as CRD42020159971.
Assuntos
Desenvolvimento Infantil/efeitos dos fármacos , Suplementos Nutricionais , Fenômenos Fisiológicos da Nutrição do Lactente , Lipídeos/administração & dosagem , África Subsaariana/epidemiologia , Bangladesh/epidemiologia , Pré-Escolar , Modificador do Efeito Epidemiológico , Feminino , Haiti/epidemiologia , Humanos , Lactente , Desenvolvimento da Linguagem , Masculino , Destreza Motora , Ensaios Clínicos Controlados Aleatórios como Assunto , Fatores SocioeconômicosRESUMO
BACKGROUND: Meta-analyses show that small-quantity lipid-based nutrient supplements (SQ-LNSs) reduce child stunting and wasting. Identification of subgroups who benefit most from SQ-LNSs may facilitate program design. OBJECTIVES: We aimed to identify study-level and individual-level modifiers of the effect of SQ-LNSs on child growth outcomes. METHODS: We conducted a 2-stage meta-analysis of individual participant data from 14 randomized controlled trials of SQ-LNSs provided to children 6-24 mo of age (n = 37,066). We generated study-specific and subgroup estimates of SQ-LNS compared with control and pooled the estimates using fixed-effects models. We used random-effects meta-regression to examine study-level effect modifiers. In sensitivity analyses, we examined whether results differed depending on study arm inclusion criteria and types of comparisons. RESULTS: SQ-LNS provision decreased stunting (length-for-age z score < -2) by 12% (relative reduction), wasting [weight-for-length (WLZ) z score < -2] by 14%, low midupper arm circumference (MUAC) (<125 mm or MUAC-for-age z score < -2) by 18%, acute malnutrition (WLZ < -2 or MUAC < 125 mm) by 14%, underweight (weight-for-age z score < -2) by 13%, and small head size (head circumference-for-age z score < -2) by 9%. Effects of SQ-LNSs generally did not differ by study-level characteristics including region, stunting burden, malaria prevalence, sanitation, water quality, duration of supplementation, frequency of contact, or average compliance with SQ-LNS. Effects of SQ-LNSs on stunting, wasting, low MUAC, and small head size were greater among girls than among boys; effects on stunting, underweight, and low MUAC were greater among later-born (than among firstborn) children; and effects on wasting and acute malnutrition were greater among children in households with improved (as opposed to unimproved) sanitation. CONCLUSIONS: The positive impact of SQ-LNSs on growth is apparent across a variety of study-level contexts. Policy-makers and program planners should consider including SQ-LNSs in packages of interventions to prevent both stunting and wasting.This trial was registered at www.crd.york.ac.uk/PROSPERO as CRD42019146592.
Assuntos
Desenvolvimento Infantil/efeitos dos fármacos , Transtornos da Nutrição Infantil/epidemiologia , Suplementos Nutricionais , Fenômenos Fisiológicos da Nutrição do Lactente , Lipídeos/administração & dosagem , Estado Nutricional , África Subsaariana/epidemiologia , Bangladesh/epidemiologia , Pré-Escolar , Modificador do Efeito Epidemiológico , Feminino , Haiti/epidemiologia , Humanos , Lactente , Masculino , Ensaios Clínicos Controlados Aleatórios como AssuntoRESUMO
Small-quantity lipid-based nutrient supplements (SQ-LNSs) were designed to provide multiple micronutrients within a food base that also provides energy, protein, and essential fatty acids, targeted towards preventing malnutrition in vulnerable populations. Previous meta-analyses demonstrated beneficial effects of SQ-LNSs on child growth, anemia, and mortality. To further examine the efficacy and effectiveness of SQ-LNSs, and explore study-level and individual-level effect modifiers, we conducted an individual participant data meta-analysis of 14 randomized controlled trials of SQ-LNSs provided to children 6-24 mo of age (n > 37,000). We examined growth, development, anemia, and micronutrient status outcomes. Children who received SQ-LNSs had a 12-14% lower prevalence of stunting, wasting, and underweight; were 16-19% less likely to score in the lowest decile for language, social-emotional, and motor development; had a 16% lower prevalence of anemia; and had a 64% lower prevalence of iron-deficiency anemia compared with control group children. For most outcomes, beneficial effects of SQ-LNSs were evident regardless of study-level characteristics, including region, stunting burden, malaria prevalence, sanitation, water quality, duration of supplementation, frequency of contact, or average reported compliance with SQ-LNSs. For development, the benefits of SQ-LNSs were greater in populations with higher stunting burden, in households with lower socioeconomic status, and among acutely malnourished children. For hemoglobin and iron status, benefits were greater in populations with higher anemia prevalence and among acutely malnourished children, respectively. Thus, targeting based on potential to benefit may be worthwhile for those outcomes. Overall, co-packaging SQ-LNSs with interventions that reduce constraints on response, such as the prevention and control of prenatal and child infections, improving health care access, and promotion of early child development, may lead to greater impact. Policymakers and program planners should consider including SQ-LNSs in strategies to reduce child mortality, stunting, wasting, anemia, iron deficiency, and delayed development. This study was registered at www.crd.york.ac.uk/PROSPERO as CRD42019146592, CRD42020159971, and CRD42020156663.
Assuntos
Desenvolvimento Infantil , Transtornos da Nutrição Infantil/prevenção & controle , Suplementos Nutricionais , Fenômenos Fisiológicos da Nutrição do Lactente , Lipídeos/administração & dosagem , Estado Nutricional , África Subsaariana/epidemiologia , Bangladesh/epidemiologia , Pré-Escolar , Feminino , Haiti/epidemiologia , Humanos , Lactente , Masculino , Ensaios Clínicos Controlados Aleatórios como Assunto , Projetos de PesquisaRESUMO
Polar lipids, which are found in human milk, serve essential functions within biological membranes, hence their importance in brain development and cognition. Therefore, we aimed to evaluate the longitudinal effects on brain macrostructural and microstructural development and recognition memory of early-life polar lipid supplementation using the translational pig model. Twenty-eight intact (i.e., not castrated) male pigs were provided either a control diet (n = 14) or the control diet supplemented with polar lipids (n = 14) from postnatal day 2 until postnatal week 4. After postnatal week 4, all animals were provided the same nutritionally-adequate diets until postnatal week 24. Pigs underwent magnetic resonance imaging at 8 longitudinal time-points to model brain macrostructural and microstructural developmental trajectories. The novel object recognition task was implemented at postnatal weeks 4 and 8 to evaluate recognition memory. Subtle differences were observed between groups in hippocampal absolute brain volumes and fractional anisotropy, and no differences in myelin water fraction developmental patterns were noted. Behavioral outcomes did not differ in recognition memory, and only minimal differences were observed in exploratory behaviors. Our findings suggest that early-life dietary supplementation of polar lipids has limited effect on brain developmental patterns, object recognition memory, and exploratory behaviors.
Assuntos
Encéfalo/crescimento & desenvolvimento , Gorduras na Dieta/administração & dosagem , Suplementos Nutricionais , Lipídeos/administração & dosagem , Reconhecimento Psicológico , Animais , Comportamento Animal , Encéfalo/diagnóstico por imagem , Comportamento Exploratório , Imageamento por Ressonância Magnética , Masculino , Suínos , Aumento de PesoRESUMO
BACKGROUND: Nutritional status may play a role in infant immune development. To identify potential boosters of immunogenicity in low-income countries where oral vaccine efficacy is low, we tested the effect of prenatal nutritional supplementation on immune response to 3 doses of a live oral rotavirus vaccine. METHODS AND FINDINGS: We nested a cluster randomized trial within a double-blind, placebo-controlled randomized efficacy trial to assess the effect of 3 prenatal nutritional supplements (lipid-based nutrient supplement [LNS], multiple micronutrient supplement [MMS], or iron-folic acid [IFA]) on infant immune response (n = 53 villages and 1,525 infants with valid serology results: 794 in the vaccine group and 731 in the placebo group). From September 2015 to February 2017, participating women received prenatal nutrient supplement during pregnancy. Eligible infants were then randomized to receive 3 doses of an oral rotavirus vaccine or placebo at 6-8 weeks of age (mean age: 6.3 weeks, 50% female). Infant sera (pre-Dose 1 and 28 days post-Dose 3) were analyzed for anti-rotavirus immunoglobulin A (IgA) using enzyme-linked immunosorbent assay (ELISA). The primary immunogenicity end point, seroconversion defined as ≥3-fold increase in IgA, was compared in vaccinated infants among the 3 supplement groups and between vaccine/placebo groups using mixed model analysis of variance procedures. Seroconversion did not differ by supplementation group (41.1% (94/229) with LNS vs. 39.1% (102/261) with multiple micronutrients (MMN) vs. 38.8% (118/304) with IFA, p = 0.91). Overall, 39.6% (n = 314/794) of infants who received vaccine seroconverted, compared to 29.0% (n = 212/731) of infants who received placebo (relative risk [RR]: 1.36; 95% confidence interval [CI]: 1.18, 1.57, p < 0.001). This study was conducted in a high rotavirus transmission setting. Study limitations include the absence of an immune correlate of protection for rotavirus vaccines, with the implications of using serum anti-rotavirus IgA for the assessment of immunogenicity and efficacy in low-income countries unclear. CONCLUSIONS: This study showed no effect of the type of prenatal nutrient supplementation on immune response in this setting. Immune response varied depending on previous exposure to rotavirus, suggesting that alternative delivery modalities and schedules may be considered to improve vaccine performance in high transmission settings. TRIAL REGISTRATION: ClinicalTrials.gov NCT02145000.
Assuntos
Suplementos Nutricionais , Ácido Fólico/administração & dosagem , Imunogenicidade da Vacina , Ferro/administração & dosagem , Lipídeos/administração & dosagem , Micronutrientes/administração & dosagem , Vacinas contra Rotavirus/imunologia , Rotavirus/imunologia , Análise por Conglomerados , Método Duplo-Cego , Feminino , Humanos , Lactente , Masculino , Níger , Gravidez , Fenômenos Fisiológicos da Nutrição Pré-Natal , Infecções por Rotavirus/prevenção & controle , Vacinas contra Rotavirus/administração & dosagem , Vacinas Atenuadas/administração & dosagemRESUMO
This study investigates the antioxidant activities of lipid, protein, and carbohydrate extracts from the marine mollusk Perna canaliculus. Lipids were extracted using acetone, which was followed by protein extraction using the broad-spectrum enzyme Alcalase and then carbohydrate extraction using cetylpyridinium chloride. Eighty white BALB/c mice were divided into eight groups according to the administered extracts. Groups 1 and 5 were the control and toxin control groups, respectively. Groups 2, 3, and 4 were administered lipid, protein, and carbohydrate extracts, respectively. The other groups were administered P. canaliculus extracts as well as gentamicin and acetaminophen, known as ethanolic extracts, derived from Nerium oleander to induce oxidation stress. All groups showed significant improvements in body weight (p < 0.05). The lipid extract group showed a significant decrease in low-density lipoprotein cholesterol (p < 0.05) and a significant increase in high-density lipoprotein cholesterol (p < 0.05). After the toxin injection, all groups treated with P. canaliculus extracts showed increased antioxidant effects on hepatocytes (p < 0.05). The lipid extracts induced antioxidant effects to protect the kidney by increasing lipid peroxidation (p < 0.05) and catalase activities (p < 0.05). Also, protein extracts showed antioxidant effects by increasing glutathione and catalase levels significantly (p < 0.005). In conclusion, P. canaliculus extracts, especially lipids and proteins, have potent antioxidant activities that protect vital organs from oxidation stress.
Assuntos
Antioxidantes/administração & dosagem , Carboidratos/administração & dosagem , Lipídeos/administração & dosagem , Perna (Organismo)/química , Proteínas/administração & dosagem , Animais , Antioxidantes/isolamento & purificação , Antioxidantes/farmacologia , Produtos Biológicos/isolamento & purificação , Carboidratos/isolamento & purificação , Carboidratos/farmacologia , Catalase/metabolismo , Etanol/administração & dosagem , Etanol/farmacologia , Glutationa/metabolismo , Peroxidação de Lipídeos/efeitos dos fármacos , Lipídeos/isolamento & purificação , Lipídeos/farmacologia , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Modelos Animais , Nerium/química , Estresse Oxidativo/efeitos dos fármacos , Proteínas/isolamento & purificação , Proteínas/farmacologiaRESUMO
Lipids are essential in maintaining brain function, and lipid profiles have been reported to be altered in aged and Alzheimer's disease (AD) brains as compared to healthy mature brains. Both age and AD share common metabolic hallmarks such as increased oxidative stress and perturbed metabolic function, and age remains the most strongly correlated risk factor for AD, a neurodegenerative disease. A major accompanying pathological symptom of these conditions is cognitive impairment, which is linked with changes in lipid metabolism. Thus, nutraceuticals that affect brain lipid metabolism or lipid levels as a whole have the potential to ameliorate cognitive decline. Lipid analyses and lipidomic studies reveal changes in specific lipid types with aging and AD, which can identify potential lipid-based nutraceuticals to restore the brain to a healthy lipid phenotype. The brain lipid profile can be influenced directly with dietary administration of lipids themselves, although because of synergistic effects of nutrients it may be more useful to consider a multi-component diet rather than single nutrient supplementation. Gut microbiota also serve as a source of beneficial lipids, and the value of treatments that manipulate the composition of gut microbiome should not be ignored. Lastly, instead of direct supplementation, compounds that affect pathways involved with lipid metabolism should also be considered as a way of manipulating lipid levels to improve cognition. In this review, we briefly discuss the role of lipids in the brain, the changing lipid profile in AD, current research on lipid-based nutraceuticals and their therapeutic potential to combat cognitive impairment.
Assuntos
Envelhecimento/metabolismo , Doença de Alzheimer/metabolismo , Cognição/fisiologia , Suplementos Nutricionais , Ácidos Graxos/metabolismo , Metabolismo dos Lipídeos/fisiologia , Idoso , Envelhecimento/efeitos dos fármacos , Envelhecimento/patologia , Doença de Alzheimer/patologia , Doença de Alzheimer/terapia , Animais , Encéfalo/efeitos dos fármacos , Encéfalo/metabolismo , Cognição/efeitos dos fármacos , Disfunção Cognitiva/metabolismo , Disfunção Cognitiva/patologia , Disfunção Cognitiva/terapia , Ácidos Graxos/administração & dosagem , Microbioma Gastrointestinal/efeitos dos fármacos , Microbioma Gastrointestinal/fisiologia , Humanos , Metabolismo dos Lipídeos/efeitos dos fármacos , Lipídeos/administração & dosagem , Estresse Oxidativo/efeitos dos fármacos , Estresse Oxidativo/fisiologiaRESUMO
Preterm infants are born before the critical period of lipid accretion and brain development that occurs during the third trimester of pregnancy. Dietary lipids serve as an important source of energy and are involved in complex processes that are essential for normal central nervous system development. In addition to traditional neurodevelopmental testing, novel quantitative magnetic resonance imaging (MRI) techniques are now available to evaluate the impact of nutritional interventions on early preterm brain development. Trials of long-chain polyunsaturated fatty acid supplementation have yielded inconsistent effects on neurodevelopmental outcomes and quantitative MRI findings. Recent studies using quantitative MRI suggest a positive impact of early lipid intake on brain volumes and white matter microstructural organization by term-equivalent age.
Assuntos
Recém-Nascido Prematuro , Lipídeos/administração & dosagem , Substância Branca , Ácidos Graxos Insaturados , Humanos , Recém-Nascido , Substância Branca/diagnóstico por imagemRESUMO
The objective of this systematic review and meta-analysis was to summarize the effects of early initiation and achievement of a high dose of parenteral lipids (≥1.5 g/kg/day reached within the first 24 h of birth) on growth and adverse outcomes in preterm infants. PubMed, EMBASE, and Cochrane databases were utilized to search for publications for this meta-analysis. Randomized controlled trials were eligible if data on growth or clinical outcome was available. The search returned nine studies. The mean proportion of postnatal weight loss (%) was lower (mean difference [MD]: -2.73; 95% confidence interval [CI]: -3.69, -1.78), and the mean head circumference near the term equivalent age (cm) was higher in the early high lipid treatment group (MD: 0.67; 95% CI: 0.25, 1.09). There was a favorable association of early high lipid administration with the incidence of extrauterine growth restriction (relative risk [RR]: 0.27; 95% CI: 0.15, 0.48). Generally, there were no differences in morbidities or adverse outcomes with early high lipid administration. Early initiation of parenteral lipids and high dose achieved within the first 24 h of life appear to be safe and endurable and offer benefits in terms of growth.
Assuntos
Suplementos Nutricionais , Recém-Nascido Prematuro/crescimento & desenvolvimento , Lipídeos/administração & dosagem , Nutrição Parenteral/métodos , Feminino , Humanos , Lactente , Recém-Nascido , MasculinoRESUMO
Novel protein-based nanovehicles offer alternatives to fat for delivery of lipophilic bioactives (nutraceuticals and drugs), yet they raise important questions regarding the bioavailability and absorption mechanism of the bioactive without fat. To provide answers, we chose vitamin D3 (VD3) as a model lipophilic-nutraceutical, re-assembled casein-micelles (rCM) as model protein-based nanovehicles, and non-fat yoghurt as a model food. We prepared three yoghurt formulations: 3% fat with VD3 dissolved in milk-fat, non-fat and 3% fat, both latter enriched with VD3 within rCM. Following in vitro digestion, VD3 retention and bioaccessibility were high (â¼90% and â¼70%, respectively) in all formulations. VD3 uptake by Caco-2 cells was three-fold higher (p < 0.005) in the non-fat yoghurt enriched with VD3 in rCM compared with enriched fat-containing yoghurts. SR-BI, CD36 and NPC1L1 transporters were involved in VD3 absorption irrespective of the composition. Thus, our findings demonstrate that protein nanovehicles may improve VD3 bioavailability, without altering its absorption mechanism compared to that from fat.
Assuntos
Caseínas/química , Colecalciferol/farmacocinética , Lipídeos/administração & dosagem , Nanopartículas/química , Disponibilidade Biológica , Células CACO-2 , Colecalciferol/química , Suplementos Nutricionais , Composição de Medicamentos/métodos , Humanos , Absorção Intestinal , Micelas , IogurteRESUMO
BACKGROUND AND AIMS: A diminution in skeletal muscle mitochondrial function due to ectopic lipid accumulation and excess nutrient intake is thought to contribute to insulin resistance and the development of type 2 diabetes. However, the functional integrity of mitochondria in insulin-resistant skeletal muscle remains highly controversial. METHODS: 19 healthy adults (age:28.4⯱â¯1.7â¯years; BMI:22.7⯱â¯0.3â¯kg/m2) received an overnight intravenous infusion of lipid (20% Intralipid) or saline followed by a hyperinsulinemic-euglycemic clamp to assess insulin sensitivity using a randomized crossover design. Skeletal muscle biopsies were obtained after the overnight lipid infusion to evaluate activation of mitochondrial dynamics proteins, ex-vivo mitochondrial membrane potential, ex-vivo oxidative phosphorylation and electron transfer capacity, and mitochondrial ultrastructure. RESULTS: Overnight lipid infusion increased dynamin related protein 1 (DRP1) phosphorylation at serine 616 and PTEN-induced kinase 1 (PINK1) expression (Pâ¯=â¯0.003 and Pâ¯=â¯0.008, respectively) in skeletal muscle while reducing mitochondrial membrane potential (Pâ¯=â¯0.042). The lipid infusion also increased mitochondrial-associated lipid droplet formation (Pâ¯=â¯0.011), the number of dilated cristae, and the presence of autophagic vesicles without altering mitochondrial number or respiratory capacity. Additionally, lipid infusion suppressed peripheral glucose disposal (Pâ¯=â¯0.004) and hepatic insulin sensitivity (Pâ¯=â¯0.014). CONCLUSIONS: These findings indicate that activation of mitochondrial fission and quality control occur early in the onset of insulin resistance in human skeletal muscle. Targeting mitochondrial dynamics and quality control represents a promising new pharmacological approach for treating insulin resistance and type 2 diabetes. CLINICAL TRIAL REGISTRATION: NCT02697201, ClinicalTrials.gov.
Assuntos
Insulina/metabolismo , Lipídeos/farmacologia , Mitocôndrias Musculares/efeitos dos fármacos , Dinâmica Mitocondrial/efeitos dos fármacos , Adulto , Biópsia , Respiração Celular/efeitos dos fármacos , Emulsões/administração & dosagem , Emulsões/farmacologia , Ácidos Graxos/administração & dosagem , Ácidos Graxos/farmacologia , Feminino , Técnica Clamp de Glucose , Voluntários Saudáveis , Humanos , Infusões Intravenosas , Resistência à Insulina/fisiologia , Metabolismo dos Lipídeos/efeitos dos fármacos , Metabolismo dos Lipídeos/fisiologia , Lipídeos/administração & dosagem , Masculino , Redes e Vias Metabólicas/efeitos dos fármacos , Mitocôndrias Musculares/patologia , Mitocôndrias Musculares/fisiologia , Músculo Esquelético/efeitos dos fármacos , Músculo Esquelético/metabolismo , Músculo Esquelético/patologia , Fosfolipídeos/administração & dosagem , Fosfolipídeos/farmacologia , Óleo de Soja/administração & dosagem , Óleo de Soja/farmacologiaRESUMO
Milk contains about 4% fat globules with its surface covered by polar lipids. Despite the abundant consumption of dairy products, the biological effects of dietary milk polar lipids on metabolic health have only been sparsely examined. Maternal obesity results in neurodevelopmental disorders and cognitive impairment in offspring. Considering the importance of maternal nutrition, the effects of polar lipids-enriched milk fat globule membrane (MFGM-PL) supplementation to dams during pregnancy and lactation on neurodevelopment and its long-term programming effects on offspring cognition were examined. Female Sprague-Dawley rats consumed 8-week control diet (CON) or high-fat diet (HFD) to induce obesity before mating. Then, female rats were fed CON or HFD with or without the supplementation of 400 mg/kg body weight MFGM-PL during pregnancy and lactation. The offspring were fed 11-week HFD after weaning. MFGM-PL supplementation to obese dams suppressed body weight gain and hyperinsulinemia in both dams and offspring. Offspring born to obese dams displayed delayed neurological reflexes development, impaired neurogenesis before weaning, and cognitive impairment in adulthood, which were recovered by maternal MFGM-PL supplementation. Insulin resistance and aberrant brain-derived neurotrophic factor signaling were induced in the hippocampus of neonatal and adult offspring due to maternal and progeny HFD, but recovered by maternal MFGM-PL administration. This study demonstrates that maternal MFGM-PL supplementation can promote neurodevelopment and exert long-term effects against HFD-induced cognitive impairment in offspring via alleviating hippocampal insulin resistance. Hence, MFGM-PL is a promising ingredient for exerting beneficial programming effects on the brain health of offspring.
Assuntos
Sistema Nervoso Central/crescimento & desenvolvimento , Cognição/efeitos dos fármacos , Suplementos Nutricionais , Lipídeos/farmacologia , Leite/química , Obesidade , Animais , Fator Neurotrófico Derivado do Encéfalo/genética , Fator Neurotrófico Derivado do Encéfalo/metabolismo , Proteína de Ligação ao Elemento de Resposta ao AMP Cíclico/genética , Proteína de Ligação ao Elemento de Resposta ao AMP Cíclico/metabolismo , Dieta Hiperlipídica/efeitos adversos , Feminino , Regulação da Expressão Gênica no Desenvolvimento/efeitos dos fármacos , Lipídeos/administração & dosagem , Masculino , Gravidez , Fenômenos Fisiológicos da Nutrição Pré-Natal , Ratos , Ratos Sprague-Dawley , Receptor trkB/genética , Receptor trkB/metabolismoRESUMO
BACKGROUND: Vitamin A (VA) deficiency is prevalent in preschool-aged children in sub-Saharan Africa. OBJECTIVES: We assessed the effect of small-quantity lipid-based nutrient supplements (SQ-LNS) given to women during pregnancy and lactation and their children from 6 to 18 mo of age on women's plasma and milk retinol concentrations in Malawi, and children's plasma retinol concentration in Malawi and Ghana. METHODS: Pregnant women (≤20 wk of gestation) were randomized to receive daily: 1) iron and folic acid (IFA) during pregnancy only; 2) multiple micronutrients (MMN; 800 µg retinol equivalent (RE)/capsule), or 3) SQ-LNS (800 µg RE/20g) during pregnancy and the first 6 mo postpartum. Children of mothers in the SQ-LNS group received SQ-LNS (400 µg RE/20 g) from 6 to 18 mo of age; children of mothers in the IFA and MMN groups received no supplement. Plasma retinol was measured in mothers at ≤20 and 36 wk of gestation and 6 mo postpartum, and in children at 6 and 18 mo of age. Milk retinol was measured at 6 mo postpartum. VA status indicators were compared by group. RESULTS: Among Malawian mothers, geometric mean (95% CI) plasma retinol concentrations at 36 wk of gestation and 6 mo postpartum were 0.97 µmol/L (0.94, 1.01 µmol/L) and 1.35 µmol/L (1.31, 1.39 µmol/L), respectively; geometric mean (95% CI) milk retinol concentration at 6 mo postpartum was 1.04 µmol/L (0.97, 1.13 µmol/L); results did not differ by intervention group. Geometric mean (95% CI) plasma retinol concentrations for Malawian children at 6 and 18 mo of age were 0.78 µmol/L (0.75, 0.81 µmol/L) and 0.81 µmol/L (0.78, 0.85 µmol/L), respectively, and for Ghanaian children they were 0.85 µmol/L (0.82, 0.88 µmol/L) and 0.88 µmol/L (0.85, 0.91 µmol/L), respectively; results did not differ by intervention group in either setting. CONCLUSIONS: SQ-LNS had no effect on VA status of mothers or children, possibly because of low responsiveness of the VA status indicators.
Assuntos
Suplementos Nutricionais , Lipídeos/administração & dosagem , Leite Humano/metabolismo , Vitamina A/sangue , Vitamina A/metabolismo , Adolescente , Adulto , Feminino , Gana/epidemiologia , Humanos , Lactente , Fenômenos Fisiológicos da Nutrição do Lactente , Recém-Nascido , Lactação , Malaui/epidemiologia , Fenômenos Fisiológicos da Nutrição Materna , Mães , Estado Nutricional , Gravidez , Prevalência , Deficiência de Vitamina A/sangue , Deficiência de Vitamina A/dietoterapia , Deficiência de Vitamina A/epidemiologia , Adulto JovemRESUMO
Many researches have been undergone to hasten the natural wound healing process. In this study, several Hibiscus species (leaves) were extracted with petroleum ether, methanol, and their mucilage was separated. All the tested species extracts were assessed for their viability percentage using the water-soluble tetrazolium. H.syriacus was the plant of choice to be incorporated in a new drug delivery system and evaluated for its wound healing activity. H.syriacus petroleum ether extract (PEE) showed a high percentage of palmitic and oleic acids while its mucilage demonstrated high glucosamine and galacturonic acid. It was selected to be formulated and pharmaceutically evaluated into three different composite sponges using chitosan in various ratios. Fourier-transformed infrared spectroscopy investigated the chemical interaction between the utilized sponges' ingredients. Morphological characteristics were evaluated using scanning electron microscopy. H.syriacus composite sponge of mucilage: chitosan (1:5) was loaded with three different concentrations of PEE. Medicated formulations were assessed in rat model of excision wound model. The wound healing ability was clearly proved by the clinical acceleration, histopathological examination, and modulation of correlated inflammatory parameters as tumor necrosis factor in addition to vascular endothelial growth factor suggesting a promising valuable candidate that supports the management of excision wounds using single-dose preparation.
Assuntos
Hibiscus , Lipídeos/administração & dosagem , Extratos Vegetais/administração & dosagem , Pele/efeitos dos fármacos , Tampões de Gaze Cirúrgicos , Cicatrização/efeitos dos fármacos , Ferimentos Penetrantes/tratamento farmacológico , Administração Cutânea , Animais , Linhagem Celular , Quitosana/administração & dosagem , Modelos Animais de Doenças , Hibiscus/química , Humanos , Mediadores da Inflamação/metabolismo , Lipídeos/isolamento & purificação , Masculino , Extratos Vegetais/isolamento & purificação , Ratos Wistar , Reepitelização/efeitos dos fármacos , Pele/lesões , Pele/metabolismo , Pele/patologia , Fator de Crescimento Transformador beta/metabolismo , Fator de Necrose Tumoral alfa/metabolismo , Fator A de Crescimento do Endotélio Vascular/metabolismo , Ferimentos Penetrantes/metabolismo , Ferimentos Penetrantes/patologiaRESUMO
SCOPE: The aim of this study is to test whether the choice of the lipid emulsion in total parenteral nutrition (TPN), that is, n-3 fatty acid-based Omegaven versus n-6 fatty acid-based Intralipid, determines inflammation in the liver, the incretin profile, and insulin resistance. METHODS AND RESULTS: Jugular vein catheters (JVC) are placed in C57BL/6 mice and used for TPN for 7 days. Mice are randomized into a saline group (saline infusion with oral chow), an Intralipid group (IL-TPN, no chow), an Omegaven group (OV-TPN, no chow), or a chow only group (without JVC). Both TPN elicite higher abundance of lipopolysaccharide binding protein in the liver, but only IL-TPN increases interleukin-6 and interferon-γ, while OV-TPN reduces interleukin-4, monocyte chemoattractant protein-1, and interleukin-1α. Insulin plasma concentrations are higher in both TPN, while glucagon and glucagon-like peptide-1 (GLP-1) were higher in IL-TPN. Gluconeogenesis is increased in IL-TPN and the nuclear profile of key metabolic transcription factors shows a liver-protective phenotype in OV-TPN. OV-TPN increases insulin sensitivity in the liver and skeletal muscle. CONCLUSION: OV-TPN as opposed to IL-TPN mitigates inflammation in the liver and reduces the negative metabolic effects of hyperinsulinemia and hyperglucagonemia by "re-sensitizing" the liver and skeletal muscle to insulin.
Assuntos
Gastrite/etiologia , Hepatite/etiologia , Insulina/metabolismo , Lipídeos/administração & dosagem , Nutrição Parenteral Total/métodos , Animais , Emulsões/administração & dosagem , Emulsões/química , Emulsões/farmacologia , Ácidos Graxos Ômega-6/farmacologia , Óleos de Peixe/farmacologia , Incretinas/metabolismo , Insulina/sangue , Resistência à Insulina , Interferon gama/metabolismo , Interleucina-6/metabolismo , Lipídeos/química , Síndromes de Malabsorção/etiologia , Masculino , Camundongos Endogâmicos C57BL , Músculo Esquelético/efeitos dos fármacos , Músculo Esquelético/metabolismo , Nutrição Parenteral Total/efeitos adversos , Fosfolipídeos/administração & dosagem , Fosfolipídeos/farmacologia , Óleo de Soja/administração & dosagem , Óleo de Soja/farmacologia , Triglicerídeos/farmacologiaRESUMO
The current work is focused on the development of docetaxel loaded pomegranate seed oil based lipid nanosystem. Docetaxel loaded pomegranate seed oil nanostructured lipid carriers (DTX-PSO-NLCs) were formulated by the melt emulsification method for parenteral delivery. The developed formulation was characterized in terms of their physicochemical parameters, solid-state characterization, in vitro drug release, in vitro cytotoxicity studies, and in vivo pharmacokinetics and biodistribution studies. Stability studies were carried out as per ICH guidelines Q1A. Melt emulsification method resulted in the formulation of stable DTX-PSO-NLCs with a particle size in the range of 150-180 nm and an entrapment efficiency of 63-65%. The in vitro release showed a slow and sustained release of the drug from the formulation compared to the marketed formulation (i.e., Daxotel®). The formulation was found to be stable for a period of 12 months at conditions of 4°C ± 2°C, 25°C ± 2°C/60% RH ± 5%RH, and 40°C ± 2°C/75% RH ± 5%RH. The developed nanosystem exhibited promising antitumor activity against various types of cancerous cell lines (i.e., MCF7, DU145, U87MG, and NCI-H460) relative to the marketed formulation. The pharmacokinetic evaluation revealed that DTX-PSO-NLCs had a better kinetic profile compared to the marketed formulation. Graphical abstract.