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Can vitamin D status influence the effect of stress on planning and problem-solving? A randomized control trial 维生素D水平会影响压力对计划和解决问题的影响吗?随机对照试验
Pub Date : 2023-03-13 DOI: 10.29219/fnr.v67.8970
A. Hansen, G. Ambroziak, D. Thornton, J. Mundt, Rachel E. Kahn, L. Dahl, Leif Waage, Daniel Kattenbraker, B. Grung
Background: Nutritional interventions may serve as a stress resilience strategy with important implications for human health. Objective: The aim of this study was to investigate the effect of vitamin D supplementation throughout wintertime on problem-solving and planning abilities during stressful circumstances. Design: A total of 77 male inpatients with a mean age of 48 years (range 31–81) and stress-related mental health disorders were randomly assigned into a Vitamin D supplement group (daily intake of 40 μg) or a placebo supplement group (Control) (daily intake of 120 mg olive oil). The intervention period was from January 2018 to May 2018. The means and standard deviations for vitamin D status (25-hydroxyvitamin D3, nmol/L), pre- and post-test, respectively, were 58(21) and 46(15) for the Control group, and 63(18) and 76(21) for the Vitamin D group. Problem-solving and planning abilities were measured by the Tower of London (ToL) task pre- (midwinter) and post- (spring) supplement intervention. The ToL task was performed during exposure to distracting noise. Results: The results revealed that vitamin D supplementation throughout the winter had a significant effect on number of correct responses on easier (1 and 2 move) ToL problems during stress; the Vitamin D group improved significantly from pre- to post-test, whereas the Control group did not. In addition, the Vitamin D group had significantly more correct responses than the Control group on post-test. The improved performance was not related to a speed-accuracy trade off effect; both groups showed significantly decreased planning times from pre- to post-test. The intervention did not differentially affect task performance on the more difficult (3 to 5 move) ToL problems. For the more demanding problems, IQ seemed to explain most of the variance regarding accuracy. Age explained most of the variance associated with task planning time. Conclusion: Vitamin D supplementation seemed to improve resilience to stress, but it was limited to performance of easier tasks  
背景:营养干预可以作为一种应激恢复策略,对人类健康具有重要意义。目的:本研究的目的是研究在冬季补充维生素D对压力环境下解决问题和计划能力的影响。设计:77例平均年龄为48岁(31-81岁)、有压力相关精神健康障碍的男性住院患者随机分为维生素D补充组(每日摄入40 μg)和安慰剂补充组(对照组)(每日摄入120 mg橄榄油)。干预期为2018年1月至2018年5月。维生素D状态(25-羟基维生素D3, nmol/L),测试前后,对照组的平均值和标准差分别为58(21)和46(15),维生素D组的平均值和标准差分别为63(18)和76(21)。解决问题和计划能力通过伦敦塔(ToL)任务前(冬至)和后(春季)补充干预来测量。ToL任务是在噪声干扰下进行的。结果:整个冬季补充维生素D对压力下较容易(1步和2步)的ToL问题的正确反应次数有显著影响;维生素D组从测试前到测试后显著改善,而对照组则没有。此外,维生素D组在测试后的正确反应明显高于对照组。改进的性能与速度-精度权衡效应无关;两组测试前后的计划时间均显著缩短。在难度较大(3到5步)的ToL问题上,干预对任务表现没有显著影响。对于要求更高的问题,智商似乎可以解释准确度方面的大部分差异。年龄解释了与任务计划时间相关的大部分差异。结论:补充维生素D似乎可以提高抗压力能力,但仅限于完成更容易的任务
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引用次数: 0
Blue honeysuckle rich in cyanidin-3-O-glucoside inhibited adipogenic differentiation by modulation of the adipogenesis pathway in 3T3-L1 adipocytes 富含花青素-3- o -葡萄糖苷的蓝金银花通过调节3T3-L1脂肪细胞的脂肪形成途径抑制成脂分化
Pub Date : 2022-10-19 DOI: 10.29219/fnr.v66.8501
Hyun Jeong Lee, E. Choi, Y. Chun, Jongkyu Kim, Jung-Ok Lee, Jin-Seol Rhee, Youn-Bi Jang, Tae-Gyu Lim, S. Shim
Background: Blue honeysuckle (BH; Lonicera caerulea L.), which is a traditional medicinal plant, is known to be a rich source of anthocyanins and phenolic acids due to its strong antioxidant and anti-inflammatory activities. Its anti-obesity effects, which are a result of attenuating abnormal lipid and glucose metabolisms, have also been reported. Aim: The purpose of this study is to investigate the effect of BH on genes and proteins that are involved in the adipocyte differentiation using 3T3-L1 cells. Methods: The effects of the water extracts of the BH were examined on adipogenesis and lipolysis using a biochemical and molecular analysis of the 3T3-L1 cells. Results: Cyanidin-3-O-glucoside (C3G) from the BH extract was determined in order to contain 1.67 mg/g by the high-performance liquid chromatography analysis. The lipid accumulation in the adipocytes was reduced, which ranged from 58 to 26% in the BH (500 and 1,000 µg/mL) compared to the control group. The lipolysis that was measured by the glycerol content was not affected by the BH at 1,000 μg/mL. The BH downregulated the expression of the main transcription factors of the adipogenesis pathway, such as peroxisome proliferator-activated receptor γ, 1, 2, adipose differentiation-related protein, CCAAT/enhancer binding protein α, and acetyl CoA carboxylase, while increasing the expression of the Adenosine monophosphate (AMP)-activated protein kinase α. Conclusion: These findings suggest that the BH is a good source of C3G, and it could be effective in regard to inhibiting the adipogenesis as opposed to the lipolysis, which indicates the potential for natural anti-obesity ingredients.
背景:蓝色忍冬(BH;金银花(Lonicera caerulea L.)是一种传统的药用植物,具有很强的抗氧化和抗炎活性,是花青素和酚酸的丰富来源。它的抗肥胖作用,这是减弱异常脂质和葡萄糖代谢的结果,也有报道。目的:本研究旨在探讨BH对3T3-L1细胞脂肪细胞分化相关基因和蛋白的影响。方法:通过对3T3-L1细胞的生化和分子分析,研究白芍水提物对脂肪形成和脂肪分解的影响。结果:用高效液相色谱法测定了茯苓提取物中花青素-3- o -葡萄糖苷(C3G)的含量为1.67 mg/g。与对照组相比,脂肪细胞中的脂质积累减少了58%至26%(500和1000µg/mL)。在1000 μg/mL浓度下,以甘油含量测定的脂解不受BH的影响。BH下调了脂肪生成途径的主要转录因子,如过氧化物酶体增殖体激活受体γ、1,2、脂肪分化相关蛋白、CCAAT/增强子结合蛋白α和乙酰辅酶a羧化酶的表达,而增加了腺苷单磷酸(AMP)激活蛋白激酶α的表达。结论:这些研究结果表明黑芪是C3G的良好来源,它可能有效地抑制脂肪生成而不是脂肪分解,这表明它可能是天然的抗肥胖成分。
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引用次数: 1
Bifidobacterium animalis subsp. lactis A12 prevents obesityassociated dyslipidemia by modulating gut microbiota-derived short-chain fatty acid production and energy metabolism in high-fat diet-fed mice 动物双歧杆菌亚种。在高脂饮食喂养的小鼠中,乳酸A12通过调节肠道微生物衍生的短链脂肪酸产生和能量代谢来预防肥胖相关的血脂异常
Pub Date : 2022-10-05 DOI: 10.29219/fnr.v66.8670
Tong Li, Jianjun Yang, Hongxing Zhang, Yuanhong Xie, Hui Liu, J. Ren, F. Ren, Junhua Jin
Background: Bifidobacterium lactis A12 (B. lactis A12) has been shown to have the potential to prevent obesity. However, the mechanisms by which it affects the control of energy metabolism have not been fully elucidated. Objective: The present work aimed to clarify the mechanisms by that B. lactis A12 has an effect on the management of energy metabolism. Design: Three- to five-week-old male C57BL/6J mice were randomly divided into five groups, 15 mice for each group. Low-fat diet (LFD) group and high-fat diet (HFD) group were fed with phosphate-buffered saline (PBS) on a daily basis. Cell-free supernatant (CFS), A12, and B. lactis BB12 (BB12) groups were fed with daily probiotics for 10 weeks (1 × 109 CFU of every strain). Results: The results showed that A12 effectively alleviated relieved weight gain and dyslipidemia, inhibited liver adipose accumulation, and improved leptin resistance in HFD-fed mice (p < 0.05). The anti-obesity effects of B. lactis A12 were closely related to the assembly of short-chain fatty acids (SCFAs), SCFA-downstream receptors, and glucagon-like peptide-1 (GLP-1) secretion. Additionally, high-throughput sequencing of the 16S rRNA showed that B. lactis A12 supplementation reversed HFD-induced gut microbiota dysbiosis, which was possible related to the augmented abundance of SCFA-producing bacterium and a minimized ratio of Bacteroidetes to Firmicutes in mice. Conclusions: B. lactis A12 prevents obesity in some pathways, including the downregulation of sterol regulatory element binding protein-1 mRNA levels in the liver, modulation of the structure of gut microbiota in a gut microbiota-dependent manner, and the upregulation of the SCFA-producing bacteria-related G protein-coupled receptor 43 pathway.
背景:乳酸双歧杆菌A12 (B. lactis A12)已被证明具有预防肥胖的潜力。然而,其影响能量代谢控制的机制尚未完全阐明。目的:阐明乳芽孢杆菌A12对能量代谢管理的作用机制。设计:将3 ~ 5周龄雄性C57BL/6J小鼠随机分为5组,每组15只。低脂饮食组(LFD)和高脂饮食组(HFD)每日饲喂磷酸盐缓冲盐水(PBS)。无细胞上清(CFS)组、A12组和乳杆菌BB12组(BB12)每日饲喂益生菌10周(每个菌株1 × 109 CFU)。结果:A12能有效减轻hfd喂养小鼠的体重增加和血脂异常,抑制肝脏脂肪堆积,改善瘦素抵抗(p < 0.05)。乳酸菌A12的抗肥胖作用与短链脂肪酸(scfa)的组装、scfa下游受体和胰高血糖素样肽-1 (GLP-1)的分泌密切相关。此外,16S rRNA的高通量测序显示,B. lactis A12补充剂逆转了hfd诱导的肠道微生物群失调,这可能与小鼠中产生scfa的细菌丰度增加以及拟杆菌门与厚壁菌门的比例最小化有关。结论:乳酸菌A12可通过下调肝脏中固醇调控元件结合蛋白-1 mRNA水平、以肠道微生物依赖的方式调节肠道菌群结构、上调产生scfa的细菌相关G蛋白偶联受体43通路等途径预防肥胖。
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引用次数: 3
Antioxidant and anti-aging effects of polysaccharide LDP-1 from wild Lactarius deliciosus on Caenorhabditis elegans 野生美味乳杆菌多糖LDP-1对秀丽隐杆线虫的抗氧化和抗衰老作用
Pub Date : 2022-09-19 DOI: 10.29219/fnr.v66.8110
Xiao-Hui Wang, Xiao-Du Cheng, Dong Wang, Z. Wu, Yan Chen, Qing-Xi Wu
Background: Edible fungi (mushrooms) have attracted much more concerns due to their abundant nutritions and functional bioactive substances like polysaccharides. Objective: In this study, the anti-oxidation and anti-aging activities of polysaccharide fraction (LDP-1) from the wild Lactarius deliciosus fruiting bodies were systematically evaluated using Caenorhabditis elegans (C. elegans) as a model. Methods: Lifetime determination of C. elegans (survival status) was observed via microscope. Effects of LDP-1 on C. elegans induced by heat and oxidative stress were, respectively, performed in an artificial climate chamber and Juglone solution. Determination of lipofuscin levels in C. elegans was observed by laser confocal scanning microscopy. Determination of reactive oxygen species in C. elegans in vivo was conducted via fluorescence spectrophotometer reader. Results: The results revealed that LDP-1 could significantly extend the lifespan of C. elegans, and the lifetime of C. elegans treated with 1,000 μg/mL LDP-1 could be prolonged by 32.8% compared with the control. The survival rates of the experimental C. elegans under heat shock and oxidative stress conditions were clearly improved after treated with 1,000 μg/mL LDP-1 (40 and 19.8%, respectively), while under the same circumstances all the C. elegans in the blank group died. Fluorescence microscopy analysis confirmed that LDP-1 could effectively reduce the accumulation of lipofuscin and reactive oxygen free radicals in C. elegans, where the respective maximum reduction reached 22.8 and 42.7% compared with the control. Conclusion: These results indicate that LDP-1 had favorable antioxidant and anti-aging effects, which could be explored as potential dietary additives to renovate oxidative damage and slow down aging process.
背景:食用菌(蘑菇)因其丰富的营养和多糖等功能性生物活性物质而备受关注。目的:以秀丽隐杆线虫(Caenorhabditis elegans, C. elegans)为模型,系统评价野生美味乳杆菌子实体多糖组分(LDP-1)的抗氧化和抗衰老活性。方法:显微镜下观察秀丽隐杆线虫的寿命测定(存活状态)。在人工气候室和Juglone溶液中分别研究了LDP-1对热应激和氧化应激诱导的秀丽隐杆线虫的影响。采用激光共聚焦扫描显微镜法测定线虫体内脂褐素的含量。采用荧光分光光度计对线虫体内活性氧进行了测定。结果:结果表明,LDP-1能显著延长秀丽隐杆线虫的寿命,1000 μg/mL LDP-1处理的秀丽隐杆线虫的寿命比对照组延长32.8%。1000 μg/mL LDP-1处理后,实验秀丽隐杆线虫在热休克和氧化应激条件下的存活率明显提高(分别为40%和19.8%),而在相同条件下空白组秀丽隐杆线虫全部死亡。荧光显微镜分析证实,LDP-1能有效减少线虫体内脂褐素和活性氧自由基的积累,与对照相比,最大减少量分别达到22.8%和42.7%。结论:LDP-1具有良好的抗氧化和抗衰老作用,可作为修复氧化损伤和延缓衰老的潜在膳食添加剂。
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引用次数: 1
Circadian dysregulation disrupts gut microbe-related bile acid metabolism 昼夜节律失调破坏肠道微生物相关的胆汁酸代谢
Pub Date : 2022-08-19 DOI: 10.29219/fnr.v66.7653
Rulong Chen, Mengcheng Ruan, Si Chen, Yu Tian, Hualin Wang, Na Li, Junlin Zhang, X. Yu, Zhiguo Liu
Background: Disturbance of circadian rhythm leads to abnormalities in bile acid (BA) and lipid metabolism, and it is of great significance to explore the relationship between them. This study explored the effects of circadian dysregulation on the rhythms of intestinal BA metabolism. Method: Period circadian clock 1/period circadian clock 2 (Per1/Per2) double gene knockout (DKO) and wild-type (WT) male C57BL/6 mice were fed with a control or high-fat diet for 16 weeks. We measure plasma parameters of mice. Pathological changes including those in liver and intestine were detected by hematoxylin and eosin (H&E) and oil O staining. Western blot was used to detect the intestinal core rhythm protein clock circadian regulator (CLOCK), nuclear receptor subfamily 1, group D, member 1 (REV-ERBα), Farnesoid X receptor (FXR), Small heterodimer partner (SHP), and Fibroblast growth factor 15 (FGF15) expressions. We analyzed the bile acid and intestinal flora profile in the mice intestine tissues by BA-targeted metabolomics detection and high-throughput sequencing. Results: Rhythmic chaos affected lipid metabolism and lipid accumulation in mice liver and intestine, and diurnal fluctuations of plasma triglycerides (TGs) were absent in normal-feeding DKO mice. The normal circadian fluctuations of the CLOCK and REV-ERBα observed in wild mice disappeared (normal diet) or were reversed (high-fat diet) in DKO mice. In WT mice intestine, total BA and conjugated BA were affected by circadian rhythm under both normal and high-fat diets, while these circadian fluctuations disappeared in DKO mice. Unconjugated BA seemed to be affected exclusively by diet (significantly increased in the high-fat group) without obvious fluctuations associated with circadian rhythm. Correlation analysis showed that the ratio of conjugated/unconjugated BA was positively correlated with the presence of Bacteroidetes and displayed a circadian rhythm. The expression levels of BA receptor pathway protein FXR, SHP, and FGF15 were affected by the ratio of conjugated/unconjugated BA. Conclusion: Bacteroidetes-related diurnal changes to intestinal ratios of conjugated/unconjugated BA have the potential to regulate diurnal fluctuations in liver BA synthesis via FXR-FGF15. The inverted intestinal circadian rhythm observed in DKO mice fed with a high-fat diet may be an important reason for their abnormal circadian plasma TG rhythms and their susceptibility to lipid metabolism disorders.  
背景:昼夜节律紊乱导致胆汁酸(BA)和脂质代谢异常,探讨两者之间的关系具有重要意义。本研究探讨了昼夜节律失调对肠道BA代谢节律的影响。方法:以周期生物钟1/周期生物钟2 (Per1/Per2)双基因敲除(DKO)和野生型(WT)雄性C57BL/6小鼠分别饲喂对照组和高脂饲料16周。我们测量了小鼠的血浆参数。采用苏木精和伊红(H&E)染色及油O染色检测肝脏和肠道的病理变化。Western blot检测肠核心节律蛋白时钟昼夜节律调节因子(clock)、核受体亚家族1、D组、成员1 (rev - erba)、Farnesoid X受体(FXR)、小异源二聚体伴侣(SHP)和成纤维细胞生长因子15 (FGF15)的表达。我们通过ba靶向代谢组学检测和高通量测序分析了小鼠肠道组织中的胆汁酸和肠道菌群。结果:节律性混乱影响小鼠肝脏和肠道脂质代谢和脂质积累,正常喂养的DKO小鼠血浆甘油三酯(TGs)无昼夜波动。在野生小鼠中观察到的正常生物钟和rev - erba的昼夜波动在DKO小鼠中消失(正常饮食)或逆转(高脂肪饮食)。在正常和高脂饮食条件下,WT小鼠肠道总BA和共轭BA均受到昼夜节律的影响,而DKO小鼠则不受昼夜节律的影响。非共轭BA似乎只受饮食的影响(高脂肪组显著增加),没有与昼夜节律相关的明显波动。相关分析表明,共轭/未共轭BA的比值与拟杆菌门的存在呈正相关,且具有昼夜节律性。BA受体通路蛋白FXR、SHP和FGF15的表达水平受BA偶联/未偶联比例的影响。结论:拟杆菌相关的肠道共轭/非共轭BA比值的日变化可能通过FXR-FGF15调节肝脏BA合成的日波动。高脂饲料喂养的DKO小鼠肠道昼夜节律的倒置可能是其血浆TG昼夜节律异常和脂质代谢紊乱的重要原因。
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引用次数: 1
Sunflower (Helianthus annuus) seed extract suppresses the lipogenesis pathway and stimulates the lipolysis pathway in high-fat diet-induced obese mice 向日葵(Helianthus annuus)种子提取物抑制高脂肪饮食诱导的肥胖小鼠的脂肪生成途径并刺激脂肪分解途径
Pub Date : 2022-06-29 DOI: 10.29219/fnr.v66.8587
Jeong‐Moon Yun, Jae-Doo Jung, Seong-Hoo Park, Young-Ha Seo, Jae Kyoung Lee, M. Bae, Sangwon Eun, O. Kim, Jeongmin Lee
Background: Obesity, abnormal fat accumulation in the adipose tissue, has become a serious global public health problem as it increases an individual’s risk of developing various diseases. Objective: This study sought to determine whether the extract from sunflower seed (SUNCA) prevents the development of obesity in high-fat diet (HFD)-induced obese mice. Design: C57BL/6J mice were fed with AIN93G normal diet (Normal diet), 60% HFD, HFD containing Catechin 100 mg/kg body weight (b.w.) (Catechin), HFD containing SUNCA 25 mg/kg b.w. (SUNCA 25), HFD containing SUNCA 50 mg/kg b.w. (SUNCA 50), or HFD containing SUNCA 100 mg/kg b.w. (SUNCA 100) for 15 weeks. Results: Body weight gain, food efficiency rate, adipose tissue weight, adipose tissue mass, size of adipocytes, and serum levels of triglyceride, total cholesterol, very low-density lipoprotein/low-density lipoprotein (VLDL/LDL)-cholesterol, aspartate aminotransferase, and alanine aminotransferase were significantly decreased by SUNCA supplementation in HFD-fed mice. Furthermore, SUNCA supplementation decreased the expression of proteins related to the adipogenesis and lipogenesis pathways and increased the expression of proteins related to the lipolysis and thermogenesis pathways in the adipose tissues of HFD-induced obese mice. Conclusions: Altogether, SUNCA might prevent obesity by suppressing the adipogenesis/lipogenesis pathway and stimulating the lipolysis/thermogenesis pathway in HFD-induced obese mice.
背景:肥胖,即脂肪组织中脂肪的异常积累,已经成为一个严重的全球公共卫生问题,因为它增加了个体患各种疾病的风险。目的:本研究旨在确定葵花籽提取物(SUNCA)是否能预防高脂肪饮食(HFD)诱导的肥胖小鼠的肥胖发展。设计:C57BL/6J小鼠分别饲喂AIN93G正常日粮(正常日粮)、60% HFD、含儿茶素100 mg/kg体重(bw)的HFD(儿茶素)、含SUNCA 25 mg/kg体重(SUNCA 25)、含SUNCA 50 mg/kg体重(SUNCA 50)或含SUNCA 100 mg/kg体重(SUNCA 100)的HFD,为期15周。结果:添加SUNCA后,hfd喂养小鼠的体重增加、食物效率、脂肪组织重量、脂肪组织质量、脂肪细胞大小以及血清甘油三酯、总胆固醇、极低密度脂蛋白/低密度脂蛋白(VLDL/LDL)-胆固醇、天冬氨酸转氨酶和丙氨酸转氨酶水平均显著降低。此外,补充SUNCA降低了hfd诱导的肥胖小鼠脂肪组织中脂肪生成和脂肪生成途径相关蛋白的表达,增加了脂肪分解和产热途径相关蛋白的表达。结论:总之,SUNCA可能通过抑制hfd诱导的肥胖小鼠的脂肪生成/脂肪生成途径和刺激脂肪分解/产热途径来预防肥胖。
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引用次数: 2
Dietary Risk Factors of Physical Growth of Filipino School-aged Children 菲律宾学龄儿童身体发育的饮食危险因素
Pub Date : 2021-04-30 DOI: 10.21203/RS.3.RS-442943/V1
I. Agdeppa, Taro Nakamura, Mayu Sugita, Marvin B Toledo, Pamela Castillo Sampaga, J. A. T. Zamora
Background: The study evaluated the relationship of the usual nutrient intake and protein adequacy to the prevalence of child malnutrition. Methods: Data were derived from the 2013 Philippine National Nutrition Survey. A total of 6,565 children aged 6-12 years across all the 17 regions that participated in the survey were analyzed. Two (2) non-consecutive day 24-hour dietary recalls (24hR) were collected to estimate the individual food intake. PC-SIDE version 1.0 software (Software for Intake Distribution Estimation) was used to estimate the usual intake of energy and key nutrients accounting for between - and within-person differences in dietary intake. The 2007 WHO Protein Digestibility Corrected Amino Acid Score (PDCAAS) method was used to measure the protein quality or the utilizable protein intake. Results: School-aged children were found to have lower dietary intake of utilizable protein than total protein. Higher consumption of grains and meat decreased the prevalence of stunting. Furthermore, linear growth of children was found to be associated with the dietary intake of several nutrients including utilizable protein, calcium, vitamin B12, vitamin C and vitamin D. The prevalence of stunting and underweight significantly decreased with a higher consumption of utilizable protein. Milk consumption decreased the prevalence of underweight. The prevalence of underweight also decreases with a higher dietary consumption of calcium, riboflavin and vitamin C. Higher consumption of grains also decreased the prevalence of underweight and wasting. A decreased prevalence of wasting was also found with higher dietary consumption of riboflavin, thiamine and fiber. On the contrary, higher consumption of meat, milk and grains increased the prevalence of obesity. In particular, higher dietary consumption of utilizable protein and vitamin C increased the prevalence of obesity. Conclusions: Even though the dietary total protein intake of school-aged children is considered adequate, the existence of malnutrition among children may be specifically attributed to quality of protein consumed. Therefore, the study suggests that nutrition interventions and policies focusing on child malnutrition should improve not just the quantity, but the quality of protein sources consumed by children to aid in proper growth and development.
背景:该研究评估了通常的营养摄入和蛋白质充足性与儿童营养不良发生率的关系。方法:数据来源于2013年菲律宾国家营养调查。参与调查的17个地区共有6565名6-12岁的儿童接受了分析。收集了两(2)个非连续的24小时饮食回忆(24hR)来估计个体的食物摄入量。采用PC-SIDE 1.0版软件(software for Intake Distribution Estimation),根据膳食摄入量的人与人之间的差异,估算日常能量和关键营养素的摄入量。采用2007年WHO蛋白质消化率校正氨基酸评分(PDCAAS)法测定蛋白质质量或可利用蛋白质摄入量。结果:学龄儿童的可利用蛋白质摄入量低于总蛋白质摄入量。谷物和肉类的高消费量降低了发育迟缓的患病率。此外,发现儿童的线性生长与膳食中几种营养素的摄入有关,包括可利用蛋白质、钙、维生素B12、维生素C和维生素d。随着可利用蛋白质摄入量的增加,发育迟缓和体重不足的发生率显著降低。牛奶的摄入降低了体重不足的发生率。随着饮食中钙、核黄素和维生素c摄入量的增加,体重不足的发生率也会降低。谷物摄入量的增加也会降低体重不足和消瘦的发生率。饮食中摄入较多的核黄素、硫胺素和纤维,也会降低消瘦的发生率。相反,肉类、牛奶和谷物的高消费量增加了肥胖的患病率。特别是,较高的可利用蛋白质和维生素C的饮食消耗增加了肥胖的患病率。结论:尽管学龄儿童的膳食总蛋白质摄入量被认为是足够的,但儿童营养不良的存在可能特别归因于所摄入的蛋白质质量。因此,该研究表明,关注儿童营养不良的营养干预措施和政策不仅应该提高儿童摄入蛋白质来源的数量,还应该提高其质量,以帮助儿童正常生长和发育。
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引用次数: 1
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Food &amp; Nutrition Research
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