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A Microneedle-Microplate Platform to Detect Biomarkers in the Skin 检测皮肤生物标志物的微针-微孔板平台
Pub Date : 2022-07-11 DOI: 10.5920/bjpharm.1164
R. Dixon, W. Lau, K. W. Ng
This research aimed to integrate an established signalquantification technique with immunocapture microneedle arrays (MNAs) to improvebiomarker-based disease diagnostics in the skin. In this miniaturized sandwichenzyme-linked immunosorbent assay (ELISA) platform, the capture antibody wasimmobilised onto the surface of microneedles which, when inserted superficiallyinto porcine skin, captured endogenous porcine immunoglobulin G (IgG) intradermally.Signal development was achieved by incubating the microneedles ino-phenylenediamine (OPD) solution in a 384-well microplate and measuring theabsorbance in a microplate spectrophotometer at 450 nm. This technique allowsfor rapid biomarker detection with high-throughput processing. Immunocapture microneedledevices such as these can be easily adapted for targeting different biomarkersor multiplexed leaving plenty of scope for future work and assay optimisation. 
本研究旨在将已建立的信号量化技术与免疫捕获微针阵列(MNAs)相结合,以改善基于生物标志物的皮肤疾病诊断。在这个小型的三明治酶联免疫吸附试验(ELISA)平台中,捕获的抗体被固定在微针的表面上,当微针插入猪皮肤表面时,在皮内捕获内源性猪免疫球蛋白G (IgG)。信号发展是通过在384孔微孔板中培养微针到苯二胺(OPD)溶液中,并在微孔板分光光度计450 nm处测量吸光度来实现的。该技术允许高通量处理的快速生物标志物检测。像这样的免疫捕获微针设备可以很容易地适应不同的生物标志物,为未来的工作和分析优化留下了充足的空间。
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引用次数: 0
Multipurpose vaginal rings for HIV prevention and non-hormonal contraception 用于HIV预防和非激素避孕的多用途阴道环
Pub Date : 2022-07-11 DOI: 10.5920/bjpharm.1137
Xin Shen, P. Boyd, Y. D. Bashi, C. McCoy, K. Malcolm
Vaginal rings releasing antiretrovirals - either alone or in combination with contraceptive progestins - are being developed for contraception and prevention of human immunodeficiency virus (HIV) transmission via vagina. However, hormonal contraceptives are associated with numerous side effects and contraindications, and many women are interested in using hormone-free contraceptives. The aim of this project is to develop multipurpose vaginal rings to release copper and/or zinc ions and dapivirine over a month for contraception and HIV prevention. Ring manufacture, swell testing, and in vitro drug release testing have been conducted. The experimental results obtained currently are encouraging and support the continued development of these ring formulations as a novel and interesting multipurpose prevention technology strategy.
正在开发释放抗逆转录病毒药物的阴道环——单独或与避孕孕激素联合使用——用于避孕和预防经阴道传播的人类免疫缺陷病毒(艾滋病毒)。然而,激素避孕药有许多副作用和禁忌症,许多妇女对使用无激素避孕药感兴趣。该项目的目的是开发多用途阴道环,在一个月内释放铜和/或锌离子和达匹维林,用于避孕和预防艾滋病毒。进行了环制造、膨胀试验和体外释药试验。目前获得的实验结果令人鼓舞,并支持这些环制剂作为一种新颖而有趣的多用途预防技术策略的继续发展。
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引用次数: 0
Fused Deposition Modelling 3D Printed Immediate Release Tablets – Understanding the Impact of Printer Parameters 熔融沉积建模3D打印立即释放片剂-了解打印机参数的影响
Pub Date : 2022-07-11 DOI: 10.5920/bjpharm.1159
Zian Zhang, V. Mohylyuk, Shu Li, David S. Jones, G. P. Andrews
The aim of this study was to prepare tablets that offer an immediate release (IR) of the loaded active ingredient using fused deposition modelling (FDM) 3D printing. Hydrochlorothiazide (HCTZ) was used as a model drug, with polyvinyl alcohol (PVA) as the primary polymeric carrier and sorbitol as a plasticizer. The impact of printer parameters, including infill density, roof and floor (R&F) thickness and nozzle size, on the drug release properties of printed tablets was investigated. The results support the use of FDM-3DP as an approach to manufacture IR tablets and highlighted the importance of the printing design on drug release properties.
本研究的目的是使用熔融沉积建模(FDM) 3D打印制备可立即释放负载活性成分(IR)的片剂。以氢氯噻嗪(HCTZ)为模型药物,聚乙烯醇(PVA)为主要聚合物载体,山梨醇为增塑剂。考察了打印机参数(填充密度、顶底厚度和喷嘴尺寸)对打印片剂释放性能的影响。研究结果支持了FDM-3DP作为红外片剂的制备方法,并强调了印刷设计对药物释放特性的重要性。
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引用次数: 0
Effect of Precirol ATO5 concentration and twin-screw melt granulation temperature on the physical properties of ascorbic acid granules precrol ATO5浓度和双螺杆熔体造粒温度对抗坏血酸颗粒物性的影响
Pub Date : 2022-07-11 DOI: 10.5920/bjpharm.1160
V. Mohylyuk, David S. Jones, Shu Li, Yalin Ding, G. P. Andrews
The pharmaceuticalindustry has a growing interest in continuous manufacturing, particularly forhigh-volume dosage forms such as solid oral tablets. This is driven by the obviousbenefits such as small footprint, batch size flexibility, the relative simplicityof scale-up and process control. Tablets are the most popular solid dosageform, while batch granulation is one of the most often used technologies intablet manufacturing. Using ascorbic acid as a model, we show the possibility ofproducing granules and tablets with a sustained-release profile using threetechnological operations: mixing, continuous melt-granulation, and tabletting.
制药行业对连续生产越来越感兴趣,特别是对大容量剂型,如固体口服片剂。这是由诸如占地面积小、批量大小灵活性、规模扩大和过程控制的相对简单性等明显优势所驱动的。片剂是最流行的固体剂型,而批量造粒是片剂生产中最常用的技术之一。以抗坏血酸为模型,我们展示了使用三种技术操作生产具有缓释特性的颗粒和片剂的可能性:混合、连续熔融造粒和片剂。
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引用次数: 0
Reporting guidelines for medicinal plant extracts used in pharmacological and toxicological research: ConPhyMP 药理学和毒理学研究中使用的药用植物提取物报告指南:ConPhyMP
Pub Date : 2022-07-11 DOI: 10.5920/bjpharm.1123
M. Heinrich, B. Jalil, Mona Abdel-Tawab, J. Echeverría, Ž. Kulić, L. McGaw, J. Pezzuto, O. Potterat, Jia-bo Wang
Summary: Every year, the number of studies that evaluate the pharmacological effects, (clinical) efficacy or the toxicity of medicinal plant extracts is constantly increasing, but the reporting quality remains unsatisfactory. One of the main reasons is that there is a lack of detailed reporting standards for guidance. In response to this long-standing challenge, a core group of nine experts with proficiency in phytochemical analysis, including editors-in-chief of leading specialist journals, and based in different research settings globally, developed the Consensus based reporting guidelines for Phytochemical Characterisation of Medicinal Plant extracts (ConPhyMP) through a multi-staged development process. This incorporated a) a global survey among medicinal plant researchers, b) a core group, who reviewed and developed the guidelines through a Delphi process, and c) an advisory group of 20 experts, including editors of leading journals and scientific societies in medicinal plants research, who provided feedback and sanctioned the final guidelines. The ConPhyMP guidelines comprise two tables with accompanying explanatory figures. The first table provides recommendations for reporting the starting material and its initial processing, and the second table presents recommendations for conducting and reporting the analytical methods for defining the chemical profile based on the type of extracts used in the research. The group hopes that the ConPhyMP will support authors as well as peer reviewers and editors assessing these studies for publication and assist the production of evidence-based guidance of studies utilising medicinal plant extracts.
摘要:每年对药用植物提取物的药理作用、(临床)疗效或毒性进行评价的研究不断增多,但报道质量仍不理想。其中一个主要原因是缺乏详细的报告标准作为指导。为了应对这一长期存在的挑战,一个由9名精通植物化学分析的专家组成的核心小组,包括来自全球不同研究机构的主要专业期刊的主编,通过多阶段的开发过程,制定了基于共识的药用植物提取物植物化学表征报告指南(ConPhyMP)。这包括:a)对药用植物研究人员进行全球调查;b)一个核心小组,通过德尔菲过程审查和制定指南;c)一个由20名专家组成的咨询小组,包括药用植物研究领域主要期刊和科学学会的编辑,他们提供反馈并批准最终指南。ConPhyMP指南包括两个附有解释性数字的表格。第一个表提供了报告起始材料及其初始处理的建议,第二个表提供了根据研究中使用的提取物类型确定化学概况的分析方法的指导和报告的建议。该小组希望ConPhyMP将支持作者以及同行审稿人和编辑评估这些研究以供发表,并协助制作利用药用植物提取物的基于证据的研究指南。
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引用次数: 1
Synthesis and modification of silver-seeded PVC for use as anti-adherent materials to prevent ventilator-associated pneumonia 用于抗粘附材料的银籽聚氯乙烯的合成和改性,以防止呼吸机相关性肺炎
Pub Date : 2022-07-11 DOI: 10.5920/bjpharm.1126
Jia Li, M. Wylie, C. McCoy
In this research, silver-seeded PVC was synthesised and modified to combat ventilator-associated pneumonia by preventing bacterial adherence. The silver-seeded PVC was synthesised by in situ deposition of silver particles, and the silver-seeded PVC was further modified by reacting with 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluoro-1-decanethiol to create a superhydrophobic surface with static water contact angle more than 150°. The silver-coated PVC and superhydrophobic silver-coated PVC both exhibited excellent anti-adherent activity against MRSA and Pseudomonas aeruginosa.
在这项研究中,银籽PVC被合成和修饰,以防止细菌粘附来对抗呼吸机相关的肺炎。通过原位沉积银粒子合成银籽聚氯乙烯,并与3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-十六氟-1-十硫醇反应,制备出静水接触角大于150°的超疏水表面。镀银PVC和超疏水镀银PVC对MRSA和铜绿假单胞菌均表现出良好的抗粘附活性。
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引用次数: 0
Vaginal formulations containing prebiotics and probiotics for treatment of bacterial vaginosis 含有治疗细菌性阴道病的益生元和益生菌的阴道制剂
Pub Date : 2022-07-11 DOI: 10.5920/bjpharm.1158
Caixuan Wang, R. Malcolm, V. Kett, D. Gilpin
Bacterial vaginosis (BV) is a common dysbiosis of the human vagina in which commensal vaginal lactobacilli are displaced by mixed pathogenic bacterial populations. Current treatments by antibiotics result in short- term cure but often lead to recurrence. Lactobacilli are being actively developed as a probiotic treatment option for BV, given their ability to inhibit growth of pathogenic microorganisms and to maintain the health and stability of the vaginal tract microbiota. Therefore, incorporation of freeze-dried lactobacillus and metronidazole (MET) into matrix-type silicone elastomer vaginal rings (VR) is a long-effective novel treatment of BV which can also prevent recurrence. Here, MED-4870 matrix-type VRs containing four different lyoprotectants of three concentrations were manufactured by reaction injection molding, and Shore M Hardness test, compression test and twist test were applied to determine the impact of incorporation of lyoprotectants on mechanical characteristics of VRs. Results indicated that incorporation of lyoprotectants can increase the resistance force and decrease the rotational angles of the VRs. As the category and concentration of incorporated lyoprotectant also have impact on the releasing profile of MET and protecting ability of lactobacillus during freeze-drying process, more research such as in-vitro release tests and microbiology tests will be needed.
细菌性阴道病(BV)是一种常见的人类阴道生态失调,其中共生阴道乳酸菌被混合致病菌群取代。目前的抗生素治疗能短期治愈,但经常导致复发。鉴于乳酸菌能够抑制致病微生物的生长并维持阴道微生物群的健康和稳定,目前正积极开发乳酸菌作为细菌性阴道炎的益生菌治疗选择。因此,将冷冻干燥的乳酸菌和甲硝唑(MET)掺入基质型有机硅弹性体阴道环(VR)是一种长期有效的治疗细菌性阴道炎的新方法,也可以预防复发。本文采用反应注射成型的方法制备了含有三种浓度的四种不同lyo保护剂的MED-4870基质型VRs,并通过邵氏硬度试验、压缩试验和捻度试验来确定lyo保护剂掺入对VRs力学特性的影响。结果表明,lyo保护剂的掺入可以增加vr的阻力,减小vr的旋转角度。由于掺入的冻干保护剂的种类和浓度也会影响乳酸菌在冷冻干燥过程中MET的释放特征和保护能力,因此需要进行更多的体外释放试验和微生物学试验等研究。
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引用次数: 0
Preparation of liposomes via 3D printed microfluidics arrays 通过3D打印微流体阵列制备脂质体
Pub Date : 2022-07-11 DOI: 10.5920/bjpharm.1163
kanza Rahali, Atabak Ghanizadeh Tabriz, D. Douroumis
Microfluidics is a technology that allows handling small volumes and mixing them in narrow channels. In this study, we used three different 3D printed microfluidics arrays to prepare liposomes by mixing an aqueous phase with an organic phase made of S75 and Cholesterol at ratios of 8:2 and 6:4 respectively. Liposomes were collected at Total Flow Rates of 3, 5 and 10 ml/min.All arrays produced liposomes varying from 40 to 70 nm, the particle size decreases with increasing TFR from 3 to 10 ml/min for all arrays and both FRRs. Zeta values varies from -40.5 to -86.6 mV indicating excellent stability for all nano dispersions. After 4 weeks storage at 4°C, a slight increase in the particle size was observed for both FRRs. Our study demonstrates the successful use of 3D printed microfluidic arrays for the design and development of liposomes.
微流体是一种允许处理小体积并在狭窄通道中混合它们的技术。在这项研究中,我们使用三种不同的3D打印微流体阵列,通过将水相与S75和胆固醇组成的有机相分别以8:2和6:4的比例混合来制备脂质体。在总流速为3、5和10 ml/min时收集脂质体。所有阵列产生的脂质体范围从40到70 nm不等,颗粒大小随着TFR的增加而减小,从3到10 ml/min不等。Zeta值变化范围从-40.5到-86.6 mV,表明对所有纳米分散体具有优异的稳定性。在4°C下储存4周后,观察到两种frr的粒径略有增加。我们的研究证明了3D打印微流体阵列在脂质体设计和开发中的成功应用。
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引用次数: 0
Investigation into the biocompatibility and antibacterial performance of TiO2 silicone nanocomposites 二氧化钛有机硅纳米复合材料的生物相容性及抗菌性能研究
Pub Date : 2022-07-11 DOI: 10.5920/bjpharm.1125
J. Quinn, Eugénie Guimier, L. Carson, K. Malcolm
Incorporationof nanoparticles into silicone elastomers to form silicone nanocomposites is anarea of ongoing research, with a broad range of biomedical applications. Addition-curesilicone nanocomposite dispersions were prepared, containing TiO2 ofvarying nanoparticle sizes and concentrations. All TiO2 silicone nanocompositesremained biocompatible (cell viability >70% relative to control silicone) whenassessed via direct contact MTT assay. However, results from bacterialadherence studies demonstrated that 1000 nm and 200 nm TiO2 nanocompositesdisplayed a greater antibacterial effect in comparison to 100 nm and 20 nm TiO2nanocomposites. The data suggests TiO2 silicone nanocompositespossess antibacterial properties (that is dependent on particle size) andare cytocompatible, warranting further research into potential uses forbiomedical applications.
将纳米颗粒掺入有机硅弹性体形成有机硅纳米复合材料是一个正在进行的研究领域,具有广泛的生物医学应用。制备了不同粒径和浓度的TiO2纳米复合分散体。通过直接接触MTT测定,所有二氧化钛硅纳米复合材料保持生物相容性(相对于对照硅,细胞存活率>70%)。然而,细菌粘附研究结果表明,与100 nm和20 nm TiO2纳米复合材料相比,1000 nm和200 nm TiO2纳米复合材料表现出更强的抗菌效果。数据表明,二氧化钛硅纳米复合材料具有抗菌性能(取决于颗粒大小)和细胞相容性,值得进一步研究其在生物医学应用中的潜在用途。
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引用次数: 0
The Use of Compaction Simulation as a Tool to Aid Successful Tablet Formulation 使用压实模拟作为辅助成功片剂配方的工具
Pub Date : 2022-07-11 DOI: 10.5920/bjpharm.1146
Sarah Stewart, Inidigo Lily Dean, Mark Lawlor, S. Lawrence
Early assessment of compaction properties of both APIs and formulations is an important consideration in early tablet development and can help to de-risk scale up from R&D to production scale. In this work, three model APIs and a tablet formulation were assessed using a compaction simulator. Compaction simulation was shown to be able to differentiate between the compaction properties of APIs and formulations and when combined with additional information on API properties (flowability, solubility) and tablet requirements (size, strength) can guide formulation strategy. 
早期评估原料药和制剂的压实特性是早期片剂开发的重要考虑因素,可以帮助降低从研发到生产规模的风险。在这项工作中,使用压实模拟器评估了三种模型原料药和一种片剂配方。压实模拟被证明能够区分原料药和制剂的压实特性,并且当与原料药特性(流动性、溶解度)和片剂要求(大小、强度)的附加信息相结合时,可以指导制剂策略。
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引用次数: 0
期刊
British Journal of Pharmacy
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