Powders

粉末
  • 文章类型: Journal Article
    药物的肺部递送已成为治疗肺部和全身性疾病的有希望的方法。与其他给药途径相比,吸入提供了许多优点,包括高靶向,副作用少,和巨大的药物吸收表面积。然而,药物在肺中的沉积可能受到肺防御机制的限制,如粘膜纤毛和巨噬细胞清除。在输送装置中,干粉吸入器由于其稳定性而成为最佳选择,易用性,没有推进剂.在过去的几十年里,一些自下而上的技术已经出现了传统的研磨生产可吸入粉末。在这些技术中,最常用的是喷雾干燥,超临界流体技术,喷雾冷冻干燥,薄膜冻结。可吸入干粉可以由附着在粗载体上的微粉化药物构成(例如,乳糖)或嵌入微米或纳米颗粒中的药物。基于颗粒的制剂通常由聚合物微米和纳米颗粒组成,脂质体,固体脂质纳米粒,树枝状聚合物,纳米晶体,细胞外囊泡,和无机纳米粒子。此外,工程配方,包括大的多孔颗粒,可溶胀微粒,纳米微粒,和泡腾纳米粒子已经被开发出来。颗粒工程在调整基于载体和无载体的可吸入粉末的物理化学性质方面也具有关键作用。这种方法可以增加粉末的流动性,沉积,并通过自定义粒子表面特征进行定位。
    Pulmonary delivery of drugs has emerged as a promising approach for the treatment of both lung and systemic diseases. Compared to other drug delivery routes, inhalation offers numerous advantages including high targeting, fewer side effects, and a huge surface area for drug absorption. However, the deposition of drugs in the lungs can be limited by lung defence mechanisms such as mucociliary and macrophages\' clearance. Among the delivery devices, dry powder inhalers represent the optimal choice due to their stability, ease of use, and absence of propellants. In the last decades, several bottom-up techniques have emerged over traditional milling to produce inhalable powders. Among these techniques, the most employed ones are spray drying, supercritical fluid technology, spray freeze-drying, and thin film freezing. Inhalable dry powders can be constituted by micronized drugs attached to a coarse carrier (e.g., lactose) or drugs embedded into a micro- or nanoparticle. Particulate-based formulations are commonly composed of polymeric micro- and nanoparticles, liposomes, solid lipid nanoparticles, dendrimers, nanocrystals, extracellular vesicles, and inorganic nanoparticles. Moreover, engineered formulations including large porous particles, swellable microparticles, nano-in-microparticles, and effervescent nanoparticles have been developed. Particle engineering has also a crucial role in tuning the physical-chemical properties of both carrier-based and carrier-free inhalable powders. This approach can increase powder flowability, deposition, and targeting by customising particle surface features.
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  • 文章类型: Journal Article
    脱水对来自浆料/液体基质的食品粉末的不断增长的市场的贡献是不可避免的。为了克服传统干燥技术带来的挑战,出现了几种创新方法。然而,由于有关目标产品最适合的干燥技术的信息不足,因此工业实施受到限制。因此,这篇综述旨在比较各种常规和新兴的脱水技术(如主动冷冻,超临界,搅拌薄膜,和涡流室干燥)基于它们的基本原理,潜在的应用,和限制。此外,本文综述了干燥技术对孔隙率的影响,这极大地影响了溶解度,补液,和粉末的稳定性。不同干燥技术之间的比较可以在选择合适的干燥技术时做出明智的决策。发现主动冷冻干燥可有效生产自由流动的粉末,不同于传统的冷冻干燥。涡流室干燥可以被认为是喷雾干燥的可行替代方案,需要一个紧凑的腔比大塔需要喷雾干燥。冻干,喷雾冷冻干燥,泡沫垫干燥的粉末比喷雾干燥的粉末具有更高的孔隙率,而超临界干燥产生纳米多孔互连粉末。值得注意的是,几个因素,如玻璃化转变温度,干燥技术,颗粒聚集,团聚,和烧结影响粉末孔隙率。然而,一些粘合剂,如麦芽糊精,蔗糖,还有乳糖,可用于控制团聚,以提高粉末的孔隙率。需要进一步研究新兴技术对粉末性能的影响及其商业可行性,以发现它们在液体干燥中的潜力。此外,利用清洁标签干燥成分,如膳食纤维,来自农业废物,提供了有希望的机会。
    The contribution of dehydration to the growing market of food powders from slurry/liquid matrices is inevitable. To overcome the challenges posed by conventional drying technologies, several innovative approaches have emerged. However, industrial implementation is limited due to insufficient information on the best-suited drying technologies for targeted products. Therefore, this review aimed to compare various conventional and emerging dehydration technologies (such as active freeze, supercritical, agitated thin-film, and vortex chamber drying) based on their fundamental principles, potential applications, and limitations. Additionally, this article reviewed the effects of drying technologies on porosity, which greatly influence the solubility, rehydration, and stability of powder. The comparison between different drying technologies enables informed decision-making in selecting the appropriate one. It was found that active freeze drying is effective in producing free-flowing powders, unlike conventional freeze drying. Vortex chamber drying could be considered a viable alternative to spray drying, requiring a compact chamber than the large tower needed for spray drying. Freeze-dried, spray freeze-dried, and foam mat-dried powders exhibit higher porosity than spray-dried ones, whereas supercritical drying produces nano-porous interconnected powders. Notably, several factors like glass transition temperature, drying technologies, particle aggregation, agglomeration, and sintering impact powder porosity. However, some binders, such as maltodextrin, sucrose, and lactose, could be applied in controlled agglomeration to enhance powder porosity. Further investigation on the effect of emerging technologies on powder properties and their commercial feasibility is required to discover their potential in liquid drying. Moreover, utilizing clean-label drying ingredients like dietary fibers, derived from agricultural waste, presents promising opportunities.
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  • 文章类型: Journal Article
    当今世界的进步由于小说的逆境而受到挫折,病毒和致命的疫情COVID19,这引起了科学家的关注,研究人员和健康相关官员关于生物体的固有和适应性免疫系统及其与健康饮食和药物食品平衡的关系。选择正确的食物可以帮助建立和提高适应性免疫力和南瓜,因为功能和营养成分的出色特征必须是受感染和未感染的人的日常饮食的一部分。维生素,矿物,酚酸,精油,肽,南瓜中存在的类胡萝卜素和多糖可以适应体内普遍存在的缺陷,以对抗病原体。南瓜配备了营养品和功能成分,因此,由于其抗高脂血症,必须鼓励这种非凡水果的消费和加工作为药物食品,抗病毒,抗炎,抗高血糖,免疫调节,抗高血压药,抗菌和抗氧化潜力,南瓜的这些药理特性与COVID19的爆发直接或间接相关。南瓜的利用具有粉末形式的域,摘录,隔离物,和南瓜加入食品。广泛的健康,营养和功能食品已经从南瓜开发,其中包括果汁,汤,粥,薯片,饼干,面包,蛋糕,酒吧和面条。近年来,一些创新和新颖的技术已被应用于加工和保存南瓜,以提高其保质期和营养物质的生物可利用性。当前新冠肺炎后时期健康饮食的需求对健康人群非常关键,还有像南瓜这样的药用食品,这种功能性食品中存在的生物活性化合物可以在全球健康社区的发展中发挥至关重要的作用。
    Progression of today\'s world has been given setback due to the adversity of a novel, viral and deadly outbreak COVID 19, which raised the concerns of the scientists, researchers and health related officials about the inherent and adaptive immune system of the living body and its relation with healthy diet balanced with pharma foods. Choice of right food can help to build and boost adaptive immunity and pumpkin due to excellent profile of functional and nutraceutical constituents must be the part of both infected and non-infected person\'s daily diet. Vitamins, minerals, phenolic acids, essential oils, peptides, carotenoids and polysaccharides present in pumpkin could accommodate the prevailing deficiencies in the body to fought against the pathogens. Pumpkins are well equipped with nutraceuticals and functional ingredients therefore, consumption and processing of this remarkable fruit must be encouraged as pharma food due to its antihyperlipidemic, antiviral, anti-inflammatory, antihyperglycemic, immunomodulatory, antihypertensive, antimicrobial and antioxidant potential, and these pharmacological properties of pumpkin are directly or indirectly related to the COVID 19 outbreak. Utilization of pumpkin has a domain in the form of powders, extracts, isolates, and pumpkin incorporated food products. A wide range of healthy, nutritious and functional food products has been developed from pumpkin, which includes juice, soup, porridge, chips, biscuits, bread, cake, bar and noodles. In recent times some innovative and novel technologies have been applied to process and preserve pumpkin for its enhanced shelf life and bioaccessibility of nutrients. Need of healthy eating in current post COVID 19 period is very crucial for healthy population, and medicinal foods like pumpkin, and bioactive compounds present in this functional food could play a vital role in developing a healthy community around the globe.
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  • 文章类型: Journal Article
    儿童营养不良主要是由于缺乏蛋白质和脂肪的摄入,这损害了他们的生长和生存能力。关于鱼类食物对儿童营养状况的益处的准确数据有限。本系统综述旨在提供有关儿童鱼类食品营养价值的已发表文章的概述。
    在2000-2021年期间,通过搜索ScienceDirect,科克伦图书馆,PubMed,ProQuest,和Wiley在线图书馆数据库。根据纳入和排除标准对所选文英文全文进行筛选。纳入的文章均为实验研究(随机对照试验,准随机试验)或涉及营养不良儿童的混合方法研究。该研究在系统评价和荟萃分析指南的首选报告项目下报告。使用Cochrane工具评估偏倚风险。
    总共筛选了330,859篇文章,其中8篇文章被纳入系统评价。干预措施包括以鱼为基础的食物和饮料,如威化饼棒,Jemawut-金枪鱼饼干,配入巧克力饮料,干鱼粉,亚麻籽油补充鱼油胶囊,和用鱼粉强化的粥。主要或次要结果是锌水平的测定,身高增长,红细胞n-3多不饱和脂肪酸含量,安全性和可接受性,肠道完整性,和认知发展。结果表明,鱼粉对体重的影响最显著。
    食用干鱼粉对营养不良儿童的康复有积极影响。
    UNASSIGNED: Malnutrition in children is mainly caused by the lack of protein and fat intake which harms their ability to grow and survive. Accurate data on the benefits of fish-based foods on the nutritional status of children is limited. The present systematic review aimed to provide an overview of published articles on the nutritional value of fish-based foods for children.
    UNASSIGNED: A systematic review was performed during 2000-2021 by searching Science Direct, Cochrane Library, PubMed, ProQuest, and Wiley Online Library databases. The full text of selected articles in English was screened based on the inclusion and exclusion criteria. Included articles were all experimental studies (randomized control trial, quasi-randomized trial) or mixed methods studies involving malnourished children. The study was reported under the preferred reporting items for systematic reviews and meta-analyses guidelines. The risk of bias was assessed using the Cochrane tool.
    UNASSIGNED: A total of 330,859 articles were screened, out of which eight articles were included in the systematic review. Interventions included fish-based foods and beverages such as wafer bars, Jemawut-tuna cookies, Amizate in chocolate drink, dried fish powder, flaxseed oil supplemented with fish oil capsules, and porridge fortified with fish powder. Primary or secondary outcomes were the determination of zinc level, height growth, erythrocyte n-3 polyunsaturated fatty acid content, safety and acceptability, intestinal integrity, and cognitive development. The results showed that dried fish powder produced the most significant effect on body weight.
    UNASSIGNED: The consumption of dried fish powder had positive effects on the recovery of malnourished children.
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  • 文章类型: Meta-Analysis
    背景:慢性荨麻疹是一组以瘙痒和/或血管水肿为特征的皮肤病,属于中医“成瘾性皮疹”类别,其病因与风邪密切相关。抗组胺药通常用于治疗。虽然有一定的效果,它们也容易引起疾病复发。消风散治疗本病在改善疾病状态、降低复发率等方面有显著效果。然而,缺乏基于证据的研究。本研究旨在系统评价加味消风散治疗慢性荨麻疹(CU)的临床疗效。
    方法:计算机搜索中国国家知识基础设施等中文数据库,中国科学期刊数据库,中国生物医学文献数据库,和万方日期和国外数据库,如PubMed和WebofScience。我们检索了自数据库建立至2023年11月发表的消风散治疗CU的临床随机对照试验。数据来自符合本研究纳入标准的临床试验,质量通过Cochrane系统评价手册5.1.0进行评价。最后,使用RevMan5.3统计软件进行荟萃分析.
    结果:共纳入11项随机对照试验,涉及1076例患者。治愈率比值比(OR)和95%置信区间(CI;括号中显示)为2.11[1.45,3.07];总有效率OR和CI为2.42[1.60,3.68];复发率OR和CI为0.22[0.15,0.34];不良反应率OR和CI为0.23[0.12,0.45];加权平均差(MD)和95%CI(括号中显示)风质量大小,症状和体征积分中的风质量数和风质量持续时间为-0.70[-0.73,0.67],-0.64[-0.96,0.31],,-0.72[-1.23,0.22],和-0.68[-1.13,0.23],,分别。
    结论:加味消风散治疗CU的临床疗效优于抗组胺药,不良反应和复发率较低,安全性较高。然而,纳入的临床研究质量相对较低,研究结果需要高质量的研究来证实。
    BACKGROUND: Chronic urticaria is a group of skin diseases characterized by pruritus and/or vascular oedema and belongs to the category of \"addictive rash\" in Traditional Chinese Medicine, and its aetiology is closely related to wind evil. Antihistamines are often used in treatment. Although they have certain effects, they also easily cause disease recurrence. Xiaofeng powder treats this disease has a significant effect in improving the disease state and reducing the recurrence rate. However, there is a lack of evidencebased research. This study to systematically evaluate the clinical efficacy of modified Xiaofeng powder in the treatment of chronic urticaria (CU).
    METHODS: Computer searches of Chinese databases such as China National Knowledge Infrastructure, China Scientific Journal Database, China Biomedical Literature Database, and WanFang Date and foreign databases such as PubMed and the Web of Science were performed. We retrieved published clinical randomized controlled trials of Xiaofeng powder in the treatment of CU from the establishment of the databases to November 2023. The data were extracted from clinical trials that met the inclusion criteria of this study, and the quality was evaluated through the Cochrane Handbook of Systematic Reviews 5.1.0. Finally, a meta-analysis was performed using RevMan 5.3 statistical software.
    RESULTS: A total of 11 randomized controlled trials involving 1076 patients were included. The cure rate odds ratio (OR) and 95% confidence interval (CI; shown in brackets) were 2.11 [1.45, 3.07]; the total effective rate OR and CI were 2.42 [1.60, 3.68]; the recurrence rate OR and CI were 0.22 [0.15, 0.34]; the adverse reaction rate OR and CI were 0.23 [0.12, 0.45]; and the mean weighted mean difference (MD) and 95% CI (shown in brackets) of itching degree, wind mass size, wind mass number and wind mass duration in symptom and sign integrals were -0.70 [-0.73, 0.67], -0.64 [-0.96, 0.31], , -0.72 [-1.23, 0.22], and -0.68 [-1.13, 0.23], , respectively.
    CONCLUSIONS: The clinical efficacy of modified Xiaofeng powder in the treatment of CU is better than that of antihistamine drugs, with lower adverse reaction and recurrence rates and higher safety. However, the quality of clinical research included is relatively low, and findings need to be confirmed by high-quality research.
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  • 文章类型: Meta-Analysis
    目的:比较几种局部抗生素方案预防清洁手术伤口手术部位感染(SSI)的效果。
    方法:作者检索CNKI(中国国家知识基础设施),VIP(VIP信息资源整合服务平台),万方数据知识服务平台(万方),SinoMed,科克伦图书馆,EMBASE,和PubMed。
    方法:2000年1月1日至2021年4月1日发表的共20项随机对照试验纳入本荟萃分析。
    方法:作者提取了第一作者的名字,出版日期,国家,手术类型,随访时间,参与者的平均年龄,每组的样本量,干预措施,结果指标,并从每篇文章中研究类型。
    结果:通过SUCRA(累积排序曲线下的表面)概率比较了八种局部管理在降低SSI效应发生率方面的总体有效性。网络荟萃分析的结果表明庆大霉素软膏(比值比[OR],0.16;95%CI,0.04-0.60),莫匹罗星软膏(或,0.44;95%CI,0.21-0.94),和庆大霉素浸泡移植物(OR,0.63;95%CI,0.44-0.91)与对照组相比显着降低了SSI的发生率。Further,万古霉素浸种者(86.7%)排名第一,其次是庆大霉素软膏(81.1%),庆大霉素灌溉(79.9%),莫匹罗星软膏(56.8%),三联抗生素软膏(47.8%),移植物的庆大霉素浸泡(42.3%),和万古霉素粉末(22.1%);氨苄西林粉末(17.8%)是效果最差的药物。
    结论:研究结果表明,伤口闭合前在伤口中局部使用抗生素与常规抗生素联合使用可有效降低清洁手术伤口的SSI发生率。万古霉素接种移植物效果最好。
    OBJECTIVE: To compare the efficacy of several local antibiotic regimens in preventing surgical site infection (SSI) in clean surgical wounds.
    METHODS: The authors searched CNKI (China National Knowledge Infrastructure), the VIP (VIP information resource integration service platform), Wanfang Data knowledge service platform (WANFANG), SinoMed, Cochrane Library, EMBASE, and PubMed.
    METHODS: A total of 20 randomized controlled trials published between January 1, 2000 and April 1, 2021 were included in this meta-analysis.
    METHODS: Authors extracted the name of the first author, publication date, country, type of surgery, follow-up time, mean age of participants, sample size of each group, interventions, outcome indicators, and study type from each article.
    RESULTS: The overall effectiveness of eight local managements in reducing the incidence of the SSI effect were compared through the SUCRA (surface under the cumulative ranking curve) probabilities. The results of a network meta-analysis demonstrated that gentamicin ointment (odds ratio [OR], 0.16; 95% CI, 0.04-0.60), mupirocin ointment (OR, 0.44; 95% CI, 0.21-0.94), and gentamicin soaking of the graft (OR, 0.63; 95% CI, 0.44-0.91) significantly reduced the incidence of SSI compared with control. Further, vancomycin soaking of the graft (86.7%) ranked first, followed by gentamicin ointment (81.1%), gentamicin irrigation (79.9%), mupirocin ointment (56.8%), triple antibiotic ointment (47.8%), gentamicin soaking of the graft (42.3%), and vancomycin powder (22.1%); ampicillin powder (17.8%) was the least effective drug.
    CONCLUSIONS: The findings indicate that local antibiotics combined with conventional antibiotics in the wound before wound closure are effective in reducing the incidence of SSI in clean surgical wounds. Vancomycin inoculation of the graft exhibited the best effect.
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  • 文章类型: Systematic Review
    由于传统的水处理过程不能有效去除细胞外代谢物,因此,当存在于饮用水供应中时,蓝毒素会对健康构成威胁。通常采用先进的治疗技术。粉状活性炭(PAC)是一种有效的去除毒素的吸附剂。然而,因为大量是必要的,替代吸附剂已被研究。生物炭,特别是来自可再生能源,是一种潜在的吸附材料,可以代替PAC去除毒素。本文旨在通过对微囊藻毒素-LR(MC-LR)等毒素吸附的系统评价,研究PAC的性质在氰毒素吸附中起关键作用。圆柱精蛋白(CYL),和蛇毒素(STX)。因此,审查表明,一些常用的指数(即总表面积)与氰基毒素吸附无关,特别是如果单独评估。除了多屏障方法之外,必须考虑到水系统的复杂性来应用PAC,其中包括对吸附剂特性的更好理解,目标毒素,和水性介质。生物炭系统综述表明,尚未专门设计用于去除毒素的研究。由于生物炭尚未应用于水处理工艺,知识差距甚至比PAC更大。
    Cyanotoxins pose a health threat when present in the drinking water supply since conventional water treatment processes are not effective in removing extracellular metabolites hence, advanced treatment techniques are usually applied. Powdered activated carbon (PAC) is an effective adsorbent for removing toxins. However, since a high volume is necessary, alternative adsorbents have been investigated. Biochar, especially from renewable sources, is a potential adsorbent material that could replace PAC for removing toxins. This paper aimed to investigate which PAC properties play key roles in cyanotoxin adsorption by a systematic review addressing the adsorption of toxins such as microcystins-LR (MC-LR), cylindrospermopsin (CYL), and saxitoxins (STXs). As a result, the review showed that some commonly adopted indices (i.e. total surface area) are not relevant to cyanotoxin adsorption, especially if appraised alone. Along with a multi-barrier approach, PAC has to be applied taking into account the complexity of the water system, which includes a better understanding of the characteristics of the adsorbent, the target toxin, and the aqueous medium. The biochar systematic review showed that no studies have yet been designed specifically for the removal of toxins. Since biochar has not yet been applied to water treatment processes, the knowledge gap is even greater than for PAC.
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  • 文章类型: Comparative Study
    目的:本系统综述采用网络荟萃分析的目的是评估各种义齿粘合剂在全口义齿患者中的比较疗效。
    方法:对发表在Scopus上的试验进行了搜索,PubMed,和Cochrane中央控制试验登记册从开始到2023年7月(PROSPERO:CRD42023451045)。进行了网络荟萃分析,以评估不同义齿粘合剂类型的比较功效,并使用累积排名下的表面(SUCRA)系统进行排名。建议的分级,评估,发展,和评估(等级)方法用于评估证据的确定性水平。
    结果:17篇文献被纳入定量分析。乳脂义齿粘合剂显着增加了两个切牙区域(RR=7.63[95CI:3.34,11.91])(P<.05)以及前磨牙和磨牙区域(RR=33.66[95CI:15.15,52.16])的咬合力。通过减少义齿脱落次数评估,乳脂粘合剂显着改善义齿的固位性(RR=-5.35[95CI:-9.93,-0.77])(P=0.022),Kapur固位指数(上颌义齿)(RR=0.80[95CI:0.18,1.42])(P=0.012)和Kapur固位指数(下颌义齿)(RR=1.27[95CI:0.67,1.87])(P<.05)。粉末粘合剂显着增加前磨牙和磨牙的咬合力(RR=36.00[95CI:16.20,55.79])(P<.05)和Kapur保留指数(下颌义齿)(RR=1.54[95CI:0.58,2.49])(P=0.002)。对于其余结果,没有任何粘合剂具有统计学意义。
    结论:乳膏和粉末义齿粘合剂可有效增强全口义齿佩戴者在前磨牙/磨牙区域的下颌义齿固位(Kapur指数)和咬合力(证据的确定度中等)。
    结论:乳脂和粉末义齿粘合剂可有效改善全口义齿的固位和功能。
    OBJECTIVE: The purpose of this systematic review with network meta-analysis was to assess the comparative efficacy of various types of denture adhesives in complete denture patients.
    METHODS: A search was conducted for trials published in Scopus, PubMed, and Cochrane Central Register of Controlled Trials from inception until July 2023 (PROSPERO: CRD42023451045). A network meta-analysis was performed to assess the comparative efficacy of different denture adhesive types and ranked using the Surface Under the Cumulative Ranking (SUCRA) system. The Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) approach was used to assess the level of certainty of evidence.
    RESULTS: Seventeen articles were included in the quantitative analysis. Cream denture adhesives significantly increased bite force in both incisal region (RR = 7.63[95%CI: 3.34, 11.91]) (P < .05) as well as premolar and molar regions (RR = 33.66[95%CI: 15.15, 52.16]). Cream adhesives significantly improved retention of dentures as assessed by the reduced number of denture dislodgments (RR = -5.35[95%CI: -9.93, -0.77]) (P = 0.022), Kapur\'s index of retention (maxillary denture) (RR = 0.80[95%CI: 0.18, 1.42]) (P = 0.012) and Kapur\'s index of retention (mandibular denture) (RR = 1.27[95%CI: 0.67, 1.87]) (P < .05). Powder adhesives significantly increased premolar and molar bite force (RR = 36.00[95%CI: 16.20, 55.79]) (P < .05) and Kapur\'s index of retention (mandibular denture) (RR = 1.54[95%CI: 0.58, 2.49]) (P = 0.002). None of the adhesives were statistically significant for remaining outcomes.
    CONCLUSIONS: Cream and powder denture adhesives are effective in enhancing the retention of mandibular dentures (Kapur\'s index) and bite force in the premolar/molar region in complete denture wearers (moderate level of certainty of evidence).
    CONCLUSIONS: Cream and powder denture adhesives are effective in improving the retention and function of complete dentures.
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  • 文章类型: Systematic Review
    背景:作为改善儿童营养的最具成本效益的投资之一,微量营养素粉(MNP)已在许多国家广泛使用,以支持可持续发展目标,然而,在大规模实施方面仍然存在挑战。然而,很少有研究使用实施科学理论和框架来探索促进或阻碍实施过程的因素。为了解决这个差距,我们采用了实施研究综合框架(CFIR),并对MNP干预措施的实施障碍和促进者的研究进行了系统审查.
    方法:五个出版物数据库,包括EMBASE,Medline,PubMed,WebofScience,还有Scopus,对MNP干预的影响因素进行了研究。基于CFIR框架,纳入研究中报告的MNP计划实施的促进者和障碍由五个领域提取和合成:干预特征,外部设置,内部设置,个体特征,和过程。
    结果:共有50篇文章符合合成条件。大多数研究是通过免费交付模式(78%)在中低收入国家(52%)进行的。内部设置结构是影响实施的最突出的因素,具体包括可用资源(例如,MNP供应不规则或不足),结构特征(例如,公共驱动的基于社区的方法),以及获取信息和知识(例如,缺乏对初级工人的培训)。私营部门参与的促进者,外部准则,并强调了定期计划监测。相反,单调的口味和偶尔的副作用阻碍了干预的实施。此外,我们发现内部设置与MNP计划实施中的其他促成因素有相互关系。
    结论:我们的结果表明,MNP计划的实施受到可用资源的显著影响,组织结构,以及提供商和用户的知识。动员当地的MNP供应商,让公众驱动的免费模式与基于市场的渠道相结合,加强对初级卫生工作者的培训可以促进MNP干预。
    BACKGROUND: As one of the most cost-effective investments for improving child nutrition, micronutrient powder (MNP) has been widely used in many countries to underpin the Sustainable Development Goals, yet challenges remain regarding its implementation on a large scale. However, few studies have explored the factors that facilitate or impede the implementation process using implementation science theories and frameworks. To address this gap, we adopted the Consolidated Framework of Implementation Research (CFIR) and conducted a systematic review of studies on the implementation barriers to and facilitators of MNP interventions.
    METHODS: Five publication databases, including EMBASE, Medline, PubMed, Web of Science, and Scopus, were searched for studies on the influencing factors of MNP interventions. Based on the CFIR framework, the facilitators and barriers for the MNP program implementation reported in the included studies were extracted and synthesized by five domains: intervention characteristics, outer setting, inner setting, individual characteristics, and process.
    RESULTS: A total of 50 articles were eligible for synthesis. The majority of the studies were conducted in lower-middle-income countries (52%) through the free delivery model (78%). The inner setting construct was the most prominently reported factor influencing implementation, specifically including available resources (e.g., irregular or insufficient MNP supply), structural characteristics (e.g., public-driven community-based approach), and access to information and knowledge (e.g., lack of training for primary-level workers). The facilitators of the engagement of private sectors, external guidelines, and regular program monitoring were also highlighted. On the contrary, monotonous tastes and occasional side effects impede intervention implementation. Additionally, we found that the inner setting had an interrelation with other contributing factors in the MNP program implementation.
    CONCLUSIONS: Our results suggest that MNP program implementation was prominently influenced by the available resources, organizational structure, and knowledge of both providers and users. Mobilizing local MNP suppliers, engaging public-driven free models in conjunction with market-based channels, and strengthening the training for primary-level health workers could facilitate MNP interventions.
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  • 文章类型: Journal Article
    速溶食品以粉末形式广泛存在于不同的食品领域,其潜在地可以与功能性或有益化合物一起配制以提供健康益处。许多重构的速溶粉末食品形成具有复杂结构的胶体悬浮液。然而,由于结构的复杂性和配方的高度灵活性,设计速溶粉末食品可能具有挑战性。本文根据成分的溶解度和重组产品的结构,提出了一种新的速溶粉末食品分类方法。讨论了含有不溶性成分的速溶粉末食品。它总结了粉末处理的挑战和当前进展,重组改进,以及对食品质地和结构的影响,以促进相关行业的产品设计。综述了主要成分和具有健康益处的成分在产品开发中的特点和掺入。不同的产品在常量营养素的比例上差异很大。大量营养素在水中具有有限的溶解度。在被水重组后,不溶性组分分散和溶胀形成具有复杂结构和质地的胶体分散体。可溶性成分,溶解在连续相中,可以促进分散过程或影响溶液环境。讨论了重组产品的结构和不稳定因素。已经开发了颗粒和分子结构策略来改善润湿性并防止结块的形成,因此,改善重建性能。已经开发了基于健康或功能性成分的各种类型的即食食品,并对预防非传染性疾病和整体健康表现出积极作用。通常选择较少加工的材料和副产品来提高膳食纤维和酚类化合物的含量。酚类化合物的富集,膳食纤维和/或益生菌倾向于同时存在于植物性产品中。必须调整成分的工艺和产品的配方,以设计所需的结构并改善重构性能。
    Instant foods are widely presented in powder forms across different food segments, which potentially can be formulated with functional or beneficial compounds to provide health benefits. Many reconstituted instant powder foods form colloidal suspensions with complex structures. However, designing instant powder food could be challenging due to the structural complexity and high flexibility in formulation. This review proposed a new classification method for instant powder foods according to the solubility of ingredients and the structure of the reconstituted products. Instant powder foods containing insoluble ingredients are discussed. It summarised challenges and current advances in powder treatments, reconstitution improvement, and influences on food texture and structure to facilitate product design in related industries. The characteristics and incorporation of the main ingredients and ingredients with health benefits in product development were reviewed. Different products vary significantly in the ratios of macronutrients. The macronutrients have limited solubility in water. After being reconstituted by water, the insoluble components are dispersed and swell to form colloidal dispersions with complex structures and textures. Soluble components, which dissolve in the continuous phase, may facilitate the dispersing process or influence the solution environment. The structure of reconstituted products and destabilising factors are discussed. Both particle and molecular structuring strategies have been developed to improve wettability and prevent the formation of lumps and, therefore, to improve reconstitution properties. Various types of instant food have been developed based on healthy or functional ingredients and exhibit positive effects on the prevention of non-communicable diseases and overall health. Less processed materials and by-products are often chosen to enhance the contents of dietary fibre and phenolic compounds. The enrichment of phenolic compounds, dietary fibres and/or probiotics tend to be simultaneous in plant-based products. The process of the ingredients and the formulation of products must be tailored to design the desired structure and to improve the reconstitution property.
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